Change doc

Release v3.0a1

.coveragerc

@@ -0,0 +1,2 @@
+[run]
+branch = True

.github/ISSUE_TEMPLATE.md

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+<!--
+Please feel free to delete any sections that aren't relevant.
+-->
+
+<!-- mark with x between the [ ] -->
+I have:
+- [ ] searched open and closed issues for duplicates
+
+### Bug description
+
+### Steps to reproduce
+- add your steps here
+- as a list
+- using hyphens
+
+### Device info
+<!-- Replace examples with your info -->
+ **Printer:** Manufacturer Model XVI
+
+<!-- since version 2.0.1 you can type 'python-escpos version' in your shell.
+Alternatively you could use '__version__' in module escpos. -->
+ **python-escpos version:** 0.0.0
+
+ **python version:** 0.0
+
+ **operating system:**

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,10 @@
+### Contributor checklist
+<!-- mark with x between the brackets -->
+- [ ] I have read the CONTRIBUTING.rst
+- [ ] I have tested my contribution on these devices:
+ * e.g. Epson TM-T88II
+- [ ] My contribution is ready to be merged as is
+
+----------
+
+### Description

.gitignore

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+# python temporary files
+*.pyc
+
+# editor autosaves, data and file browser files
+$~
+.idea/
+.directory
+.cache/
+
+# temporary data
+temp
+
+# packaging and testing
+.tox/
+*.egg-info/
+.eggs/
+*.egg
+build/
+dist/
+.coverage
+src/escpos/version.py
+.hypothesis
+
+# testing temporary directories
+test/test-cli-output/
+
+# vim swap files
+*.swp
+*.swn
+*.swo

.gitmodules

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+[submodule "capabilities-data"]
+	path = capabilities-data
+	url = https://github.com/receipt-print-hq/escpos-printer-db.git

.hgignore

@@ -1,10 +0,0 @@
-# python temporary files
-syntax: glob
-*.pyc
-
-# editor autosaves
-$~
-
-# temporary data
-syntax: regexp
-temp

.travis.yml

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+language: python
+sudo: false
+cache: pip
+addons:
+  apt:
+    packages:
+      - graphviz
+matrix:
+  include:
+    - python: 2.7
+      env: TOXENV=py27
+    - python: 3.3
+      env: TOXENV=py33
+    - python: 3.4
+      env: TOXENV=py34
+    - python: 3.5
+      env: TOXENV=py35
+    - python: 3.6
+      env: TOXENV=py36
+    - python: 3.6-dev
+      env: TOXENV=py36
+    - python: nightly
+      env: TOXENV=py37
+    - python: pypy
+      env: TOXENV=pypy
+    - python: pypy3
+      env: TOXENV=pypy3
+    - python: 2.7
+      env: TOXENV=docs
+    - python: 2.7
+      env: TOXENV=flake8
+    - python: 3.6
+      env: TOXENV=flake8
+  allow_failures:
+    - python: 3.6-dev
+    - python: nightly
+    - python: pypy3
+before_install:
+    - pip install tox codecov 'sphinx>=1.5.1'
+script:
+    - tox
+    - codecov
+notifications:
+  email:
+    on_success: never
+    on_failure: change
+deploy:
+# Github deployment
+  - provider: releases
+    api_key:
+      secure: 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
+    file: .tox/dist/python-escpos*.zip
+    file_glob: true
+    skip_cleanup: true
+    on:
+      tags: true
+      repo: python-escpos/python-escpos
+      branch: master
+      condition: $TRAVIS_PYTHON_VERSION = "3.5"

CHANGELOG

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-CHANGELOG
-
-* 2012-11-15 - Version 1.0
-- Issue #2: Added ethernet support
-- Issue #3: Added compatibility with libusb-1.0.1
-- Issue #4: Fixed typo in escpos.py
-
-* 2013-03-14 - Version 1.0.1
-- Issue #8: Fixed set font
-- Added QR support
-
-* 2013-12-30 - Version 1.0.2
-- Issue #5: Fixed vertical tab
-- Issue #9: Fixed identation inconsistence
-
-* 2014-02-23 - Version 1.0.3
-- Issue #18: Added quad-area characters (Sent by syncman1x@gmail.com)
-- Added exception for PIL import
-
-* 2014-05-20 - Version 1.0.4
-- Issue #20: Added Density support (Sent by thomas.erbacher@ragapack.de)
-- Added charcode tables
-- Fixed Horizontal Tab
-- Fixed code tabulators
-
-* 2015-04-21 - Version 1.0.5
-- Merge pull request #45 from Krispy2009/master
-  . Raising the right error when wrong charcode is used
-  . Sent by Kristi <Krispy2009@gmail.com>
-
-* 2015-07-06 - Version 1.0.6
-- Merge pull request #53 from ldos/master
-  . Extended params for serial printers
-  . Sent by ldos <cafeteria.ldosalzira@gmail.com>
-
-* 2015-08-22 - Version 1.0.7
-- Issue #57: Fixed transparent images
-
-* 2015-10-27 - Version 1.0.8
-- Merge pull request #59 from zouppen/master
-  . Support for images vertically longer than 256 pixels
-  . Sent by Joel Lehtonen <joel.lehtonen@koodilehto.fi>
-- Updated README
-
-* 2016-01-24 - Version 1.0.9
-- fix constant definition for PC1252
-- move documentation to Sphinx
-

CHANGELOG.rst

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+*********
+Changelog
+*********
+
+2017-03-29 - Version 3.0a1 - "Headcrash"
+----------------------------------------
+This release is the second alpha release of the new version 3.0. Please
+be aware that the API will still change until v3.0 is released.
+
+changes
+^^^^^^^
+- automatically upload releases to GitHub
+- add environment variable ESCPOS_CAPABILITIES_FILE
+- automatically handle cases where full cut or partial cut is not available
+- add print_and_feed
+
+contributors
+^^^^^^^^^^^^
+- Sam Cheng
+- Patrick Kanzler
+- Dmytro Katyukha
+
+2017-01-31 - Version 3.0a - "Grey Area"
+---------------------------------------
+This release is the first alpha release of the new version 3.0. Please
+be aware that the API will still change until v3.0 is released.
+
+changes
+^^^^^^^
+- change the project's license to MIT in accordance with the contributors (see python-escpos/python-escpos#171)
+- feature: add "capabilities" which are shared with escpos-php, capabilities are stored in
+  `escpos-printer-db <https://github.com/receipt-print-hq/escpos-printer-db>`_
+- feature: the driver tries now to guess the appropriate codepage and sets it automatically (called "magic encode")
+- as an alternative you can force the codepage with the old API
+- updated and improved documentation
+- changed constructor of main class due to introduction of capablities
+- changed interface of method `blocktext`, changed behavior of multiple methods, for details refer to the documentation
+  on `python-escpos.readthedocs.io <https://python-escpos.readthedocs.io>`_
+- add support for custom cash drawer sequence
+- enforce flake8 on the src-files, test py36 and py37 on travis
+
+contributors
+^^^^^^^^^^^^
+- Michael Billington
+- Michael Elsdörfer
+- Patrick Kanzler (with code by Frédéric Van der Essen)
+- Asuki Kono
+- Benito López
+- Curtis // mashedkeyboard
+- Thijs Triemstra
+- ysuolmai
+
+2016-08-26 - Version 2.2.0 - "Fate Amenable To Change"
+------------------------------------------------------
+
+changes
+^^^^^^^
+- fix improper API-use in qrcode()
+- change setup.py shebang to make it compatible with virtualenvs.
+- add constants for sheet mode and colors
+- support changing the linespacing
+
+contributors
+^^^^^^^^^^^^
+- Michael Elsdörfer
+- Patrick Kanzler
+
+2016-08-10 - Version 2.1.3 - "Ethics Gradient"
+----------------------------------------------
+
+changes
+^^^^^^^
+- configure readthedocs and travis
+- update doc with hint on image preprocessing
+- add fix for printing large images (by splitting them into multiple images)
+
+contributors
+^^^^^^^^^^^^
+- Patrick Kanzler
+
+2016-08-02 - Version 2.1.2 - "Death and Gravity"
+------------------------------------------------
+
+changes
+^^^^^^^
+- fix File-printer: flush after every call of _raw()
+- fix lists in documentation
+- fix CODE128: by adding the control character to the barcode-selection-sequence the barcode became unusable
+
+contributors
+^^^^^^^^^^^^
+- Patrick Kanzler
+
+2016-08-02 - Version 2.1.1 - "Contents May Differ"
+--------------------------------------------------
+
+changes
+^^^^^^^
+- rename variable interface in USB-class to timeout
+- add support for hypothesis and move pypy3 to the allowed failures (pypy3 is not supported by hypothesis)
+
+contributors
+^^^^^^^^^^^^
+- Patrick Kanzler
+- Renato Lorenzi
+
+2016-07-23 - Version 2.1.0 - "But Who's Counting?"
+--------------------------------------------------
+
+changes
+^^^^^^^
+- packaging: configured the coverage-analysis codecov.io
+- GitHub: improved issues-template
+- documentation: add troubleshooting tip to network-interface
+- the module, cli and documentation is now aware of the version of python-escpos
+- the cli does now support basic tabcompletion
+
+contributors
+^^^^^^^^^^^^
+- Patrick Kanzler
+
+2016-06-24 - Version 2.0.0 - "Attitude Adjuster"
+------------------------------------------------
+
+This version is based on the original version of python-escpos by Manuel F Martinez. However, many contributions have
+greatly improved the old codebase. Since this version does not completely match the interface of the version published
+on PyPi and has many improvements, it will be released as version 2.0.0.
+
+changes
+^^^^^^^
+- refactor complete code in order to be compatible with Python 2 and 3
+- modernize packaging
+- add testing and CI
+- merge various forks into codebase, fixing multiple issues with barcode-, QR-printing, cashdraw and structure
+- improve the documentation
+- extend support of barcode-codes to type B
+- add function to disable panel-buttons
+- the text-functions are now intended for unicode, the driver will automatically encode the string based on the selected
+  codepage
+- the image-functions are now much more flexible
+- added a CLI
+- restructured the constants
+
+contributors
+^^^^^^^^^^^^
+- Thomas van den Berg
+- Michael Billington
+- Nate Bookham
+- Davis Goglin
+- Christoph Heuel
+- Patrick Kanzler
+- Qian LinFeng
+
+2016-01-24 - Version 1.0.9
+--------------------------
+
+- fix constant definition for PC1252
+- move documentation to Sphinx
+
+2015-10-27 - Version 1.0.8
+--------------------------
+
+- Merge pull request #59 from zouppen/master
+    - Support for images vertically longer than 256 pixels
+    - Sent by Joel Lehtonen <joel.lehtonen@koodilehto.fi>
+- Updated README
+
+2015-08-22 - Version 1.0.7
+--------------------------
+
+- Issue #57: Fixed transparent images
+
+2015-07-06 - Version 1.0.6
+--------------------------
+
+- Merge pull request #53 from ldos/master
+    - Extended params for serial printers
+    - Sent by ldos <cafeteria.ldosalzira@gmail.com>
+
+2015-04-21 - Version 1.0.5
+--------------------------
+
+- Merge pull request #45 from Krispy2009/master
+    - Raising the right error when wrong charcode is used
+    - Sent by Kristi <Krispy2009@gmail.com>
+
+2014-05-20 - Version 1.0.4
+--------------------------
+
+- Issue #20: Added Density support (Sent by thomas.erbacher@ragapack.de)
+- Added charcode tables
+- Fixed Horizontal Tab
+- Fixed code tabulators
+
+2014-02-23 - Version 1.0.3
+--------------------------
+
+- Issue #18: Added quad-area characters (Sent by syncman1x@gmail.com)
+- Added exception for PIL import
+
+2013-12-30 - Version 1.0.2
+--------------------------
+
+- Issue #5: Fixed vertical tab
+- Issue #9: Fixed identation inconsistence
+
+2013-03-14 - Version 1.0.1
+--------------------------
+
+- Issue #8: Fixed set font
+- Added QR support
+
+2012-11-15 - Version 1.0
+------------------------
+
+- Issue #2: Added ethernet support
+- Issue #3: Added compatibility with libusb-1.0.1
+- Issue #4: Fixed typo in escpos.py

CONTRIBUTING.rst

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+************
+Contributing
+************
+
+This project is open to any kind of contribution. You can help with improving the documentation, adding fixes to the
+code, providing test cases in code or as a description or just spreading the word. Please feel free to create an
+issue or pull request.
+In order to reduce the amount of work for everyone please try to adhere to good practice.
+
+The pull requests and issues will be prefilled with templates. Please fill in your information where applicable.
+
+This project uses `semantic versioning <http://semver.org/>`_ and tries to adhere to the proposed rules as
+well as possible.
+
+Style-Guide
+-----------
+
+When writing code please try to stick to these rules.
+
+Python 2 and 3
+^^^^^^^^^^^^^^
+We have rewritten the code in order to maintain compatibility with both Python 2 and Python 3.
+In order to ensure that we do not miss any accidental degradation, please add these imports to the top
+of every file of code:
+
+.. code-block:: Python
+
+  from __future__ import absolute_import
+  from __future__ import division
+  from __future__ import print_function
+  from __future__ import unicode_literals
+
+Furthermore please be aware of the differences between Python 2 and 3. For
+example `this guide <https://docs.python.org/3/howto/pyporting.html>`_ is helpful.
+Special care has to be taken when dealing with strings and byte-strings. Please note
+that the :py:meth:`~escpos.escpos.Escpos._raw`-method only accepts byte-strings.
+Often you can achieve compatibility quite easily with a tool from the `six`-package.
+
+PEP8
+^^^^
+This is not yet consequently done in every piece of code, but please try to ensure
+that your code honors PEP8.
+The checks by Landscape and QuantifiedCode that run on every PR will provide you with hints.
+
+GIT
+^^^
+The master-branch contains code that has been released to PyPi. A release is marked with a tag
+corresponding to the version. Issues are closed when they have been resolved in the development-branch.
+
+When you have a change to make, begin by creating a new branch from the HEAD of `python-escpos/development`.
+Name your branch to indicate what you are trying to achieve. Good branch names might
+be `improve/text-handling`, `feature/enable-color-printing`.
+
+Please try to group your commits into logical units. If you need to tidy up your branch, you can make use of a
+git feature called an 'interactive rebase' before making a pull request. A small, self-contained change-set is
+easier to review, and improves the chance of your code being merged.
+Please also make sure that before creating your PR, your branch is rebased on a recent commit or you merged a recent
+commit into your branch. This way you can ensure that your PR is without merge conflicts.
+
+Docstrings
+^^^^^^^^^^
+This project tries to have a good documentation.
+Please add a docstring to every method and class. Have a look at existing methods and classes for the style.
+We use basically standard rst-docstrings for Sphinx.
+
+Test
+^^^^
+Try to write tests whenever possible. Our goal for the future is 100% coverage.
+We are currently using `nose` but might change in the future.
+You can copy the structure from other testcases. Please remember to adapt the docstrings.
+
+Further reading
+^^^^^^^^^^^^^^^
+For further best practices and hints on contributing please see the
+`contribution-guide <http://www.contribution-guide.org/>`_. Should there be any contradictions between this guide
+and the linked one, please stick to this text.
+Aside from that feel free to create an issue or write an email if anything is unclear.
+
+Thank you for your contribution!

COPYING

@@ -1,674 +0,0 @@
-                    GNU GENERAL PUBLIC LICENSE
-                       Version 3, 29 June 2007
-
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- Everyone is permitted to copy and distribute verbatim copies
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LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2012-2017 python-escpos and Manuel F Martinez
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

MANIFEST

@@ -1,8 +0,0 @@
-# file GENERATED by distutils, do NOT edit
-README
-setup.py
-escpos/__init__.py
-escpos/constants.py
-escpos/escpos.py
-escpos/exceptions.py
-escpos/printer.py

MANIFEST.in

@@ -0,0 +1,13 @@
+include *.rst
+include *.txt
+include COPYING
+include LICENSE
+include INSTALL
+include tox.ini
+include capabilities-data/dist/capabilities.json
+recursive-include doc *.bat
+recursive-include doc *.ico
+recursive-include doc *.py
+recursive-include doc *.rst
+recursive-include doc *.txt
+recursive-include doc Makefile

README

@@ -1,45 +0,0 @@
-ESCPOS
-======
-
-Python library to manipulate ESC/POS Printers.
-
-------------------------------------------------------------------
-1. Description
-
-Python ESC/POS is a library which lets the user have access to all
-those printers handled by ESC/POS commands, as defined by Epson,
-from a Python application.
-
-The standard usage is send raw text to the printer, but in also 
-helps the user to enhance the experience with those printers by
-facilitating the bar code printing in many different standards,
-as well as manipulating images so they can be printed as brand
-logo or any other usage images migh have. 
-
-Text can be aligned/justified and fonts can be changed by size,
-type and weight.
-
-Also, this module handles some hardware functionalities like, cut
-paper, carrier return, printer reset and others concerned to the
-carriage alignment.
-
-------------------------------------------------------------------
-2. Documentation
-
-Please visit project documentation at:
-https://python-escpos.readthedocs.org/en/latest
-
-------------------------------------------------------------------
-3. Donations
-
-There are some different prints I'd like to acquire, but unfortunately
-not all, even used, are cheaper and easy to get.
-
-If you want to help funding money to get more printers or just want to
-donate because you like the project, please be in touch and I'll be
-sending my PayPal info so you can donate.
-
-Thank you!
-
-Manuel F Martinez <manpaz@bashlinux.com>
-

README.rst

@@ -0,0 +1,76 @@
+#############################################################
+python-escpos - Python library to manipulate ESC/POS Printers
+#############################################################
+
+.. image:: https://travis-ci.org/python-escpos/python-escpos.svg?branch=master
+    :target: https://travis-ci.org/python-escpos/python-escpos
+    :alt: Continous Integration
+
+.. image:: https://www.quantifiedcode.com/api/v1/project/95748b89a3974700800b85e4ed3d32c4/badge.svg
+    :target: https://www.quantifiedcode.com/app/project/95748b89a3974700800b85e4ed3d32c4
+    :alt: Code issues
+
+.. image:: https://landscape.io/github/python-escpos/python-escpos/master/landscape.svg?style=flat
+    :target: https://landscape.io/github/python-escpos/python-escpos/master
+    :alt: Code Health
+
+.. image:: https://codecov.io/github/python-escpos/python-escpos/coverage.svg?branch=master
+    :target: https://codecov.io/github/python-escpos/python-escpos?branch=master
+    :alt: Code Coverage
+
+.. image:: https://readthedocs.org/projects/python-escpos/badge/?version=stable
+    :target: http://python-escpos.readthedocs.io/en/latest/?badge=stable
+    :alt: Documentation Status
+
+
+Description
+-----------
+
+Python ESC/POS is a library which lets the user have access to all those printers handled
+by ESC/POS commands, as defined by Epson, from a Python application.
+
+The library tries to implement the functions provided by the ESC/POS-commandset and supports sending text, images,
+barcodes and qr-codes to the printer.
+
+Text can be aligned/justified and fonts can be changed by size, type and weight.
+
+Also, this module handles some hardware functionalities like cutting paper, control characters, printer reset
+and similar functions.
+
+Since supported commands differ from printer to printer the software tries to automatically apply the right
+settings for the printer that you set. These settings are handled by
+`escpos-printer-db <https://github.com/receipt-print-hq/escpos-printer-db>`_ which is also used in
+`escpos-php <https://github.com/mike42/escpos-php>`_.
+
+Dependencies
+------------
+
+This library makes use of:
+
+    * pyusb for USB-printers
+    * Pillow for image printing
+    * qrcode for the generation of QR-codes
+    * pyserial for serial printers
+
+Documentation and Usage
+-----------------------
+
+The basic usage is:
+
+.. code:: python
+
+    from escpos.printer import Usb
+
+    """ Seiko Epson Corp. Receipt Printer (EPSON TM-T88III) """
+    p = Usb(0x04b8, 0x0202, 0, profile="TM-T88III")
+    p.text("Hello World\n")
+    p.image("logo.gif")
+    p.barcode('1324354657687', 'EAN13', 64, 2, '', '')
+    p.cut()
+
+The full project-documentation is available on `Read the Docs <https://python-escpos.readthedocs.io>`_.
+
+Contributing
+------------
+
+This project is open for any contribution! Please see CONTRIBUTING.rst for more information.

codecov.yml

@@ -0,0 +1,13 @@
+codecov:
+  bot: patkan
+
+coverage:
+  status:
+    project:
+      default:  # status context
+        target: auto
+        threshold: "1%"
+  range: "60...100"
+
+comment: off
+

debian/changelog

@@ -0,0 +1,94 @@
+python-escpos (1.0.8-3) unstable; urgency=medium
+
+  [ Christoph Heuel ]
+  * Fix text wrapping error after image
+
+  [ Patrick Kanzler ]
+  * moved .hgignore to .gitignore
+  * REFACTOR chained boolean expression in escpos
+  * REFACTOR use new-style class for Escpos
+  * REFACTOR style and PEP8, fixes #66
+  * REFACTOR do not shadow built-ins
+  * ADD requirements.txt and requirements to setup.py
+  * DOC, IMPROVE improve docstrings and add abstract method _raw to Escpos
+  * FIX constant definition for PC1252
+
+ -- Christoph Heuel <mail@christoph-heuel.net>  Sun, 13 Dec 2015 14:27:27 +0100
+
+python-escpos (1.0.8-2) unstable; urgency=low
+
+  * Imported source 
+  * First debianization
+
+ -- Christoph Heuel <mail@christoph-heuel.net>  Sat, 12 Dec 2015 19:13:33 +0100
+
+python-escpos (1.0.8-1) unstable; urgency=low
+
+  [ Manuel F Martinez ]
+  * Added donation message
+
+  [ Joel Lehtonen ]
+  * Support for images vertically longer than 256 pixels
+
+  [ Christoph Heuel ]
+  * Fix mixed tabs/space error
+
+  [ Hark ]
+  * Prevent crash when using libusb0 printers
+
+  [ Manuel F Martinez ]
+  * Updated README and documentation
+
+  [ Christoph Heuel ]
+  * Add flush function
+  * Debian packaging
+
+ -- Manuel F Martinez <manpaz@gmail.com>  Sat, 12 Dec 2015 20:59:53 +0100
+
+python-escpos (1.0.7-1) unstable; urgency=low
+
+  [ Kristi ]
+  * Raising the right error when wrong charcode is used
+
+  [ Christoph Heuel ]
+  * After running 2to3 tool
+  * Fix for string operation
+  * Integer is needed, not float
+  * Add text wrapping
+
+  [ Manuel F Martinez ]
+  * Updated URL for the documentation
+  * Updated documentation URL to local wiki
+  * Updated setup URLs
+
+  [ Christoph Heuel ]
+  * Introduce new direct_image
+
+  [ Manuel F Martinez ]
+  * Fixed License version mismatch
+
+  [ Christoph Heuel ]
+  * Use unhexlify
+  * Hexlify text
+
+  [ Manuel F Martinez ]
+  * Updated accordingly to the wiki
+
+  [ ldos ]
+  * Extended params for serial printers
+
+  [ Manuel F Martinez ]
+  * Fixed issues with transparent images
+  * Updated project version
+
+ -- Manuel F Martinez <manpaz@gmail.com>  Sat, 12 Dec 2015 20:59:53 +0100
+
+python-escpos (1.0.4-1) unstable; urgency=medium
+
+  [ Manuel F Martinez ]
+  * Added density support
+  * Added quad support
+  * fixed code tabulators
+  * Updated version
+
+ -- Manuel F Martinez <manpaz@gmail.com>  Sat, 12 Dec 2015 20:59:53 +0100

debian/compat

@@ -0,0 +1 @@
+9

debian/control

@@ -0,0 +1,55 @@
+Source: python-escpos
+Section: unknown
+Priority: optional
+Maintainer: Christoph Heuel <mail@christoph-heuel.net>
+Build-Depends: debhelper (>= 9), dh-python
+Standards-Version: 3.9.5
+Homepage: https://github.com/braveheuel/python-escpos
+#Vcs-Git: git@github.com:braveheuel/python-escpos.git
+#Vcs-Browser: https://github.com/braveheuel/python-escpos
+
+Package: python-escpos
+Architecture: all
+Depends: ${misc:Depends}
+Description: Python library to manipulate ESC/POS Printers (Python 2)
+ Python ESC/POS is a library which lets the user have access to all
+ those printers handled by ESC/POS commands, as defined by Epson,
+ from a Python application.
+ .
+ The standard usage is send raw text to the printer, but in also 
+ helps the user to enhance the experience with those printers by
+ facilitating the bar code printing in many different standards,
+ as well as manipulating images so they can be printed as brand
+ logo or any other usage images migh have. 
+ .
+ Text can be aligned/justified and fonts can be changed by size,
+ type and weight.
+ .
+ Also, this module handles some hardware functionalities like, cut
+ paper, carrier return, printer reset and others concerned to the
+ carriage alignment.
+ .
+ This package covers Python 2 code.
+
+Package: python3-escpos
+Architecture: all
+Depends: ${misc:Depends}
+Description: Python library to manipulate ESC/POS Printers (Python 3)
+ Python ESC/POS is a library which lets the user have access to all
+ those printers handled by ESC/POS commands, as defined by Epson,
+ from a Python application.
+ .
+ The standard usage is send raw text to the printer, but in also 
+ helps the user to enhance the experience with those printers by
+ facilitating the bar code printing in many different standards,
+ as well as manipulating images so they can be printed as brand
+ logo or any other usage images migh have. 
+ .
+ Text can be aligned/justified and fonts can be changed by size,
+ type and weight.
+ .
+ Also, this module handles some hardware functionalities like, cut
+ paper, carrier return, printer reset and others concerned to the
+ carriage alignment.
+ .
+ This package covers Python 3 code.

debian/copyright

@@ -0,0 +1,26 @@
+Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: python-escpos
+Source: https://github.com/manpaz/python-escpos
+
+Files: *
+Copyright: 2015 Manuel F Martinez <manpaz@bashlinux.com>
+License: GPL v3
+
+Files: debian/*
+Copyright: 2015 Christoph Heuel <mail@christoph-heuel.net>
+License: GPL-2+
+ This package is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+ .
+ This package is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+ .
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>
+ .
+ On Debian systems, the complete text of the GNU General
+ Public License version 2 can be found in "/usr/share/common-licenses/GPL-2".

debian/docs

@@ -0,0 +1 @@
+README.rst

debian/gbp.conf

@@ -0,0 +1,6 @@
+[DEFAULT]
+upstream-branch=master
+upstream-tree = tag 
+debian-branch = debian/jessie
+upstream-tag = v%(version)s
+debian-tag = v%(version)s

debian/rules

@@ -0,0 +1,28 @@
+#!/usr/bin/make -f
+# See debhelper(7) (uncomment to enable)
+# output every command that modifies files on the build system.
+#DH_VERBOSE = 1
+
+# see EXAMPLES in dpkg-buildflags(1) and read /usr/share/dpkg/*
+DPKG_EXPORT_BUILDFLAGS = 1
+include /usr/share/dpkg/default.mk
+
+# see FEATURE AREAS in dpkg-buildflags(1)
+#export DEB_BUILD_MAINT_OPTIONS = hardening=+all
+
+# see ENVIRONMENT in dpkg-buildflags(1)
+# package maintainers to append CFLAGS
+#export DEB_CFLAGS_MAINT_APPEND  = -Wall -pedantic
+# package maintainers to append LDFLAGS
+#export DEB_LDFLAGS_MAINT_APPEND = -Wl,--as-needed
+
+
+# main packaging script based on dh7 syntax
+%:
+	dh $@ --with python2,python3 --buildsystem=pybuild
+
+# debmake generated override targets
+# This is example for Cmake (See http://bugs.debian.org/641051 )
+#override_dh_auto_configure:
+#	dh_auto_configure -- \
+#	-DCMAKE_LIBRARY_PATH=$(DEB_HOST_MULTIARCH)

debian/source/format

@@ -0,0 +1 @@
+3.0 (quilt)

doc/.gitignore

@@ -1 +1 @@
-_build 
+_build/

doc/api.rst

@@ -1,46 +0,0 @@
-escpos package
-==============
-
-Submodules
-----------
-
-escpos.constants module
------------------------
-
-.. automodule:: escpos.constants
-    :members:
-    :undoc-members:
-    :show-inheritance:
-
-escpos.escpos module
---------------------
-
-.. automodule:: escpos.escpos
-    :members:
-    :undoc-members:
-    :show-inheritance:
-
-escpos.exceptions module
-------------------------
-
-.. automodule:: escpos.exceptions
-    :members:
-    :undoc-members:
-    :show-inheritance:
-
-escpos.printer module
----------------------
-
-.. automodule:: escpos.printer
-    :members:
-    :undoc-members:
-    :show-inheritance:
-
-
-Module contents
----------------
-
-.. automodule:: escpos
-    :members:
-    :undoc-members:
-    :show-inheritance:

doc/api/capabilities.rst

@@ -0,0 +1,10 @@
+Capabilities
+------------
+Module :py:mod:`escpos.capabilities`
+
+.. automodule:: escpos.capabilities
+    :members:
+    :inherited-members:
+    :undoc-members:
+    :show-inheritance:
+    :member-order: bysource

doc/api/cli.rst

@@ -0,0 +1,10 @@
+CLI
+---
+Module :py:mod:`escpos.cli`
+
+.. automodule:: escpos.cli
+    :members:
+    :inherited-members:
+    :undoc-members:
+    :show-inheritance:
+    :member-order: bysource

doc/api/codepages.rst

@@ -0,0 +1,10 @@
+Codepages
+---------
+Module :py:mod:`escpos.codepages`
+
+.. automodule:: escpos.codepages
+    :members:
+    :inherited-members:
+    :undoc-members:
+    :show-inheritance:
+    :member-order: bysource

doc/api/config.rst

@@ -0,0 +1,10 @@
+Config
+------
+Module :py:mod:`escpos.config`
+
+.. automodule:: escpos.config
+    :members:
+    :inherited-members:
+    :undoc-members:
+    :show-inheritance:
+    :member-order: bysource

doc/api/constants.rst

@@ -0,0 +1,10 @@
+Constants
+---------
+Module :py:mod:`escpos.constants`
+
+.. automodule:: escpos.constants
+    :members:
+    :inherited-members:
+    :undoc-members:
+    :show-inheritance:
+    :member-order: bysource

doc/api/escpos.rst

@@ -0,0 +1,10 @@
+Esc/Pos
+-------
+Module :py:mod:`escpos.escpos`
+
+.. automodule:: escpos.escpos
+    :members:
+    :inherited-members:
+    :undoc-members:
+    :show-inheritance:
+    :member-order: bysource

doc/api/exceptions.rst

@@ -0,0 +1,9 @@
+Exceptions
+----------
+Module :py:mod:`escpos.exceptions`
+
+.. automodule:: escpos.exceptions
+    :members:
+    :inherited-members:
+    :show-inheritance:
+    :member-order: bysource

doc/api/image.rst

@@ -0,0 +1,10 @@
+Image helper
+------------
+Module :py:mod:`escpos.image`
+
+.. automodule:: escpos.image
+    :members:
+    :inherited-members:
+    :undoc-members:
+    :show-inheritance:
+    :member-order: bysource

doc/api/katakana.rst

@@ -0,0 +1,10 @@
+Katakana
+--------
+Module :py:mod:`escpos.katakana`
+
+.. automodule:: escpos.katakana
+    :members:
+    :inherited-members:
+    :undoc-members:
+    :show-inheritance:
+    :member-order: bysource

doc/api/magicencode.rst

@@ -0,0 +1,10 @@
+Magic Encode
+------------
+Module :py:mod:`escpos.magicencode`
+
+.. automodule:: escpos.magicencode
+    :members:
+    :inherited-members:
+    :undoc-members:
+    :show-inheritance:
+    :member-order: bysource

doc/api/printer.rst

@@ -0,0 +1,9 @@
+Printer implementations
+-----------------------
+Module :py:mod:`escpos.printer`
+
+.. automodule:: escpos.printer
+    :members:
+    :undoc-members:
+    :show-inheritance:
+    :member-order: bysource

doc/conf.py

@@ -14,11 +14,17 @@
 
 import sys
 import os
+on_rtd = os.getenv('READTHEDOCS') == 'True'
+if on_rtd:
+    import escpos
+else:
+    from setuptools_scm import get_version
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
-sys.path.insert(0, os.path.abspath('..'))
+sys.path.insert(0, os.path.abspath('../src'))
+root = os.path.relpath(os.path.join(os.path.dirname(__file__), '..'))
 
 # -- General configuration ------------------------------------------------
 
@@ -34,8 +40,19 @@ extensions = [
     'sphinx.ext.todo',
     'sphinx.ext.coverage',
     'sphinx.ext.viewcode',
+    'sphinx.ext.todo',
+    'sphinx.ext.graphviz',
+    'sphinx.ext.inheritance_diagram',
 ]
 
+# supress warnings for external images
+suppress_warnings = [
+    'image.nonlocal_uri',
+]
+
+# enable todos
+todo_include_todos = True
+
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
 
@@ -50,16 +67,20 @@ master_doc = 'index'
 
 # General information about the project.
 project = u'python-escpos'
-copyright = u'2015, Manuel F Martinez and others'
+copyright = u'2016, Manuel F Martinez and others'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
+if on_rtd:
+    # The full version, including alpha/beta/rc tags.
+    release = escpos.__version__
+else:
+    # locally setuptools_scm should work
+    release = get_version(root=root)
 # The short X.Y version.
-version = '1.0.8'
-# The full version, including alpha/beta/rc tags.
-release = '1.0.8'
+version = '.'.join(release.split('.')[:2])  # The short X.Y version.
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
@@ -104,7 +125,16 @@ pygments_style = 'sphinx'
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'default'
+if on_rtd:
+    html_theme = 'default'
+else:
+    try:
+        import sphinx_rtd_theme
+        html_theme = 'sphinx_rtd_theme'
+        html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
+    except ImportError:
+        print("no sphinx_rtd_theme found, switching to nature")
+        html_theme = 'default'
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the
@@ -128,7 +158,7 @@ html_theme = 'default'
 # The name of an image file (within the static path) to use as favicon of the
 # docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
 # pixels large.
-#html_favicon = None
+html_favicon = 'pyescpos.ico'
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,

doc/dev/changelog.rst

@@ -0,0 +1 @@
+.. include:: ../../CHANGELOG.rst

doc/dev/contributing.rst

@@ -0,0 +1 @@
+.. include:: ../../CONTRIBUTING.rst

doc/index.rst

@@ -3,49 +3,45 @@
    You can adapt this file completely to your liking, but it should at least
    contain the root `toctree` directive.
 
-Welcome to python-escpos's documentation!
-=========================================
+.. include:: ../README.rst
 
-Python ESC/POS is a library which lets the user have access to all those printers handled by ESC/POS commands, as defined by Epson, from a Python application.
-
-The standard usage is send raw text to the printer, but in also helps the user to enhance the experience with those printers by facilitating the bar code printing in many different standards,as well as manipulating images so they can be printed as brand logo or any other usage images migh have.
-
-Text can be justified and fonts can be changed by size, type and weight.
-
-Also, this module handles some hardware functionalists like, cut paper, cash drawer kicking, printer reset, carriage return and others concerned to the carriage alignment.
-
-------------
-
-There are some different printers I'd like to acquire, unfortunately
-not all, even used, are cheaper and easy to get.
-
-If you want to help funding money to get more printers or just want to
-donate because you like the project, please be in touch and I'll be
-sending my PayPal info so you can donate.
-
-Thank you!
-
-User Documentation:
--------------------
+Content
+-------
 
 .. toctree::
    :maxdepth: 1
+   :caption: User Documentation
 
-   user/dependencies
    user/installation
    user/methods
    user/printers
    user/raspi
    user/todo
    user/usage
-
-API:
-----
+   user/barcode
 
 .. toctree::
    :maxdepth: 1
-   
-   api
+   :caption: Developer Documentation
+
+   dev/contributing
+   dev/changelog
+
+.. toctree::
+   :maxdepth: 1
+   :caption: API Documentation
+
+   api/escpos
+   api/printer
+   api/constants
+   api/exceptions
+   api/capabilities
+   api/config
+   api/image
+   api/cli
+   api/magicencode
+   api/codepages
+   api/katakana
 
 Indices and tables
 ==================

doc/requirements.txt

@@ -1,4 +1,7 @@
 pyusb
 Pillow>=2.0
 qrcode>=4.0
-pyserial
+pyserial
+sphinx-rtd-theme
+setuptools-scm
+docutils>=0.12

doc/user/barcode.rst

@@ -0,0 +1,34 @@
+Printing Barcodes
+-----------------
+:Last Reviewed: 2016-07-31
+
+Most ESC/POS-printers implement barcode-printing.
+The barcode-commandset is implemented in the barcode-method.
+For a list of compatible barcodes you should check the manual of your printer.
+As a rule of thumb: even older Epson-models support most 1D-barcodes.
+To be sure just try some implementations and have a look at the notices below.
+
+barcode-method
+~~~~~~~~~~~~~~
+The barcode-method is rather low-level and orients itself on the implementation of ESC/POS.
+In the future this class could be supplemented by a high-level class that helps the user generating the payload.
+
+.. py:currentmodule:: escpos.escpos
+
+.. automethod:: Escpos.barcode
+    :noindex:
+
+CODE128
+~~~~~~~
+Code128 barcodes need a certain format.
+For now the user has to make sure that the payload is correct.
+For alphanumeric CODE128 you have to preface your payload with `{B`.
+
+.. code-block:: Python
+
+   from escpos.printer import Dummy, Serial
+   p = Serial()
+   # print CODE128 012ABCDabcd
+   p.barcode("{B012ABCDabcd", "CODE128", function_type="B")
+
+A very good description on CODE128 is also on `Wikipedia <https://en.wikipedia.org/wiki/Code_128>`_.

doc/user/dependencies.rst

@@ -1,57 +0,0 @@
-************
-Dependencies
-************
-
-Fedora
-------
-
-Fortunately everything is on Fedora repositories.
-
-::
-
-    # yum install python-imaging pyserial pyusb python-qrcode
-
-Ubuntu
-------
-
-Ultimately, this instructions also apply to Raspbian, in case you are
-interested to install python-escpos on your Raspberry with Raspbian.
-
-Install the packages available on distro repositories.
-
-::
-
-    # apt-get install python-imaging pyserial
-
-The packages which are not available at Ubuntu repositories need to be
-installed manually.
-
-pyusb
-^^^^^
-This is the python binding to libusb-1.0 
-
-* Get the latest tarball from `sourceforge <http://sourceforge.net/projects/pyusb/files/PyUSB%201.0/>`__
-* Build and install it
-
-::
-
-    # tar zxvf pyusb-1.*.tar.gz
-    # cd pyusb-1.*
-    # python setup.py build
-    # sudo python setup.py install
-
-python-qrcode
-^^^^^^^^^^^^^
-
-This is the python module to generate QR Codes
-
-* Checkout the latest code from `github <https://github.com/lincolnloop/python-qrcode>`__
-* Build and install it
-
-::
-
-    # git clone https://github.com/lincolnloop/python-qrcode
-    # cd python-qrcode
-    # python setup.py build
-    # sudo python setup.py install
-

doc/user/installation.rst

@@ -2,16 +2,26 @@
 Installation
 ************
 
-System preparation
-------------------
+:Last Reviewed: 2016-07-23
 
-1. Install the required
-   `dependencies <https://github.com/manpaz/python-escpos/wiki/Dependencies>`__
+Installation with PIP
+---------------------
+Installation should be rather straight-forward. python-escpos is on PyPi, so you can simply enter:
 
-2. Get the *Product ID* and *Vendor ID* from the lsusb command
+    ::
+
+        pip install python-escpos
+
+This should install all necessary dependencies. Apart from that python-escpos should also be
+available as a Debian package. If you want to always benefit from the newest stable releases you should probably
+install from PyPi.
+
+Setup udev for USB-Printers
+---------------------------
+1. Get the *Product ID* and *Vendor ID* from the lsusb command
    ``# lsusb  Bus 002 Device 001: ID 1a2b:1a2b Device name``
 
-3. Create a udev rule to let users belonging to *dialout* group use the
+2. Create a udev rule to let users belonging to *dialout* group use the
    printer. You can create the file
    ``/etc/udev/rules.d/99-escpos.rules`` and add the following:
    ``SUBSYSTEM=="usb", ATTRS{idVendor}=="1a2b", ATTRS{idProduct}=="1a2b", MODE="0664", GROUP="dialout"``
@@ -20,21 +30,19 @@ System preparation
    "dialout" group, or use another group you already belongs instead
    "dialout" and set it in the ``GROUP`` parameter in the above rule.
 
-4. Restart udev ``# sudo service udev restart`` In some new systems it
+3. Restart udev ``# sudo service udev restart`` In some new systems it
    is done with ``# sudo udevadm control --reload``
 
-Install
--------
+Enabling tab-completion in CLI
+------------------------------
+python-escpos has a CLI with tab-completion. This is realised with ``argcomplete``.
+In order for this to work you have to enable tab-completion, which is described in
+the `manual of argcomplete <https://argcomplete.readthedocs.io>`__.
 
-* Clone python-escpos from github
-* Change directory to python-escpos and install the package
+If you only want to enable it for python-escpos, or global activation does not work, try this:
 
-   ::
+    ::
 
-       # cd python-escpos
-       # python setup.py build
-       # sudo python setup.py install
-
-* Enjoy !!!
+        eval "$(register-python-argcomplete python-escpos)"
 
 

doc/user/methods.rst

@@ -1,118 +1,17 @@
 *******
 Methods
 *******
-
-.. note:: **TODO** Merge this page into the API-description.
+:Last Reviewed: 2017-01-25
 
 Escpos class
 ------------
 
-Escpos inherits its methods to the printers. the following methods are
-defined:
+The core part of this libraries API is the Escpos class.
+You use it by instantiating a  :doc:`printer <printers>` which is a child of Escpos.
+The following methods are available:
 
-image("image\_name.ext")
-^^^^^^^^^^^^^^^^^^^^^^^^
+.. autoclass:: escpos.escpos.Escpos
+    :members:
+    :member-order: bysource
+    :noindex:
 
-Prints an image. Its adjust the size in order to print it.
-
-* ``image_name.ext`` is the complete file name and location of any image type (jpg, gif, png, bmp)
-
-Raises ``ImageSizeError`` exception.
-
-qr("text")
-^^^^^^^^^^
-
-Prints a QR code. The size has been adjusted to Version 4, so it can be
-enough small to be printed but also enough big to be read by a smart
-phone.
-
-* ``text`` Any text that needs to be QR encoded. It could be a slogan,
-  salutation, url, etc.
-
-barcode("code", "barcode\_type", width, height, "position", "font")
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Prints a barcode.
-
-* ``code`` is an alphanumeric code to be printed as bar code
-* ``barcode_type`` must be one of the following type of codes:
-   
-  * UPC-A
-  * UPC-E
-  * EAN13
-  * EAN8
-  * CODE39
-  * ITF
-  * NW7
-   
-* ``width`` is a numeric value in the range between (1,255) *Default:* 64
-* ``height`` is a numeric value in the range between (2,6) *Default:* 3
-* ``position`` is where to place the code around the bars, could be one of the following values:
-  
-  * ABOVE
-  * BELOW
-  * BOTH
-  * OFF > *Default:* BELOW
-   
-* ``font`` is one of the 2 type of fonts, values could be:
-  
-  * A
-  * B > *Default:* A Raises ``BarcodeTypeError``, ``BarcodeSizeError``, ``BarcodeCodeError`` exceptions.
-    
-text("text")
-^^^^^^^^^^^^
-
-Prints raw text. Raises ``TextError`` exception.
-
-set("align", "font", "type", width, height)
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Set text properties.
-* ``align`` set horizontal position for text, the possible values are:
-   
-  * CENTER
-  * LEFT
-  * RIGHT > > *Default:* left
-   
-* ``font`` type could be ``A`` or ``B``. *Default:* A
-* ``type`` type could be ``B`` (Bold), ``U`` (Underline) or ``normal``. *Default:* normal
-* ``width`` is a numeric value, 1 is for regular size, and 2 is twice the standard size. *Default*: 1
-* ``height`` is a numeric value, 1 is for regular size and 2 is twice the standard size. *Default*: 1
-
-cut("mode")
-^^^^^^^^^^^
-
-Cut paper.
-* ``mode`` set a full or partial cut. *Default:* full
-
-**Partial cut is not implemented in all printers.**
-
-cashdraw(pin)
-^^^^^^^^^^^^^
-
-Sends a pulse to the cash drawer in the specified pin.
-
-* ``pin`` is a numeric value which defines the pin to be used to send the pulse, it could be 2 or 5. Raises ``CashDrawerError()``
-
-hw("operation")
-^^^^^^^^^^^^^^^
-
-Hardware operations.
-
-* ``operation`` is any of the following options:
-    
-  * INIT
-  * SELECT
-  * RESET
-
-control("align")
-^^^^^^^^^^^^^^^^
-
-Carrier feed and tabs.
-* ``align`` is a string which takes any of the following values:
-  
-  * LF *for Line Feed*
-  * FF *for Form Feed*
-  * CR *for Carriage Return*
-  * HT *for Horizontal Tab*
-  * VT *for Vertical Tab*

doc/user/printers.rst

@@ -1,42 +1,77 @@
 ********
 Printers
 ********
+:Last Reviewed: 2017-01-25
 
-.. note:: **TODO** Merge this page into the API-description.
+As of now there are 5 different type of printer implementations.
 
-There 3 different type of printers:
+USB
+---
+The USB-class uses pyusb and libusb to communicate with USB-based
+printers. Note that this driver is not suited for USB-to-Serial-adapters
+and similiar devices, but only for those implementing native USB.
 
-USB(idVendor, idProduct, interface, in\_ep, out\_ep)
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+.. autoclass:: escpos.printer.Usb
+    :members:
+    :special-members:
+    :member-order: bysource
+    :noindex:
 
-Based on pyusb and libusb-1.0
+Serial
+------
+This driver uses pyserial in order to communicate with serial devices.
+If you are using an USB-based adapter to connect to the serial port,
+then you should also use this driver.
+The configuration is often based on DIP-switches that you can set on your
+printer. For the hardware-configuration please refer to your printer's manual.
 
-* ``idVendor`` is the Vendor ID
-* ``idProduct`` is the Product ID
-* ``interface`` is the USB device interface (default = 0)
-*  ``in_ep`` is the input end point (default = 0x82)
-* ``out_ep`` is the output end point (default = 0x01)
+.. autoclass:: escpos.printer.Serial
+     :members:
+     :special-members:
+     :member-order: bysource
+     :noindex:
 
-Serial("devfile", baudrate, bytesize, timeout)
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Network
+-------
 
-Based on pyserial, default values are based on the defaults set by
-DIP\_SWITCH\_1 on the documentation(hardware side).
+This driver is based on the socket class.
 
-* ``devfile`` is an alphanumeric device file name under /dev filesystem (default = /ev/ttyS0)
-* ``baudrate`` is the Baud rate for serial transmission (default = 9600)
-* ``bytesize`` sets the serial buffer size (default = 8)
-* ``timeout`` defines Read/Write timeout (default = 1)
+.. autoclass:: escpos.printer.Network
+      :members:
+      :special-members:
+      :member-order: bysource
+      :noindex:
 
-Network("host", port)
-^^^^^^^^^^^^^^^^^^^^^
+Troubleshooting
+^^^^^^^^^^^^^^^
+Problems with a network-attached printer can have numerous causes. Make sure that your device has a proper IP address.
+Often you can check the IP address by triggering the self-test of the device. As a next step try to send text
+manually to the device. You could use for example:
 
-Based on socket
-* ``host`` is an alphanumeric host name, could be either DNS host name or IP address.
-* ``port`` to write to (default = 9100)
+    ::
 
-File("file\_name")
-^^^^^^^^^^^^^^^^^^
+            echo "OK\n" | nc IPADDRESS 9100
+            # the port number is often 9100
+
+As a last resort try to reset the interface of the printer. This should be described in its manual.
+
+File
+----
+This printer "prints" just into a file-handle. Especially on \*nix-systems this comes very handy.
+
+.. autoclass:: escpos.printer.File
+      :members:
+      :special-members:
+      :member-order: bysource
+      :noindex:
+
+Dummy
+-----
+The Dummy-printer is mainly for testing- and debugging-purposes. It stores
+all of the "output" as raw ESC/POS in a string and returns that.
+
+.. autoclass:: escpos.printer.Dummy
+      :members:
+      :member-order: bysource
+      :noindex:
 
-Printcap printers
-* ``file_name`` is the full path to the device file name

doc/user/raspi.rst

@@ -2,67 +2,41 @@
 Raspberry Pi
 ************
 
-This instructions were tested on Raspbian.
+:Last Reviewed: 2017-01-05
 
-Unless you have done any distro with libusb-1.0 on the Raspberry Pi, the
-following instructions should works fine on your raspberry distro.
+This instructions were tested on Raspbian Jessie.
+
+.. warning:: You should **never** directly connect an printer with RS232-interface (serial port) directly to
+    a Raspberry PI or similar interface (e.g. those simple USB-sticks without encasing). Those interfaces are
+    based on 5V- or 3,3V-logic (the latter in the case of Raspberry PI). Classical RS232 uses 12V-logic and would
+    **thus destroy your interface**. Connect both systems with an appropriate *level shifter*.
 
 Dependencies
 ------------
-
 First, install the packages available on Raspbian.
 
 ::
 
-    # apt-get install python-imaging python-serial python-setuptools
-
-PyUSB
-^^^^^
-
-PyUSB 1.0 is not available on Ubuntu, so you have to download and
-install it manually
-
-1. Download the latest tarball from
-   `Sourceforge <http://sourceforge.net/projects/pyusb/files/>`__
-2. Decompress the zip file
-3. Install the library
-
-   ::
-
-       # wget ...
-       # unzip pyusb*.zip
-       # cd pyusb*
-       # python setup.py build
-       # sudo python setup.py install
-
-python-qrcode
-^^^^^^^^^^^^^
-
-1. Checkout the code from github
-2. Install the library
-
-   ::
-
-       # git clone https://github.com/lincolnloop/python-qrcode
-       # cd python-qrcode
-       # python setup.py build
-       # sudo python setup.py install
+       sudo apt-get install python3 python3-setuptools python3-pip libjpeg8-dev
 
 Installation
 ------------
-
-If you have installed pyusb for libusb-1.0 then you need to:
-
-1. Download the latest file
-2. Decompress the file
-3. Install the library
+You can install by using pip3.
 
 ::
 
-    # git clone https://github.com/manpaz/python-escpos.git
-    # cd python-escpos
-    # python setup.py build
-    # sudo python setup.py install
+    sudo pip3 install --upgrade pip
+    sudo pip3 install python-escpos
 
-Now you can attach your printer and and test it with the example code in
-the project's `home <https://github.com/manpaz/python-escpos>`__
+Run
+---
+You need sudo and python3 to run your program.
+
+::
+
+    sudo python3 your-program.py
+
+Now you can attach your printer and and test it with the example code in the project's set of examples.
+You can find that in the `project-repository <https://github.com/python-escpos/python-escpos>`__.
+
+For more details on this check the :doc:`installation-manual <installation>`.

doc/user/todo.rst

@@ -21,6 +21,7 @@ Testing
 ~~~~~~~
 
 * Test on many printers as possible (USB, Serial, Network)
+* automate testing
 
 Design
 ~~~~~~
@@ -32,4 +33,11 @@ Design
   *  Windows compatibility (hidapi instead libusb?)
   *  PDF417 support
 
+* use something similar to the `capabilities` in escpos-php
+
+Todos in the codebase
+~~~~~~~~~~~~~~~~~~~~~
+
+.. todolist::
+
 

doc/user/usage.rst

@@ -8,12 +8,11 @@ Define your printer
 USB printer
 ^^^^^^^^^^^
 
-Before start creating your Python ESC/POS printer instance, you must see
-at your system for the printer parameters. This is done with the 'lsusb'
-command.
+Before creating your Python ESC/POS printer instance, consult the system to obtain
+the printer parameters. This is done with the 'lsusb' command.
 
-First run the command to look for the "Vendor ID" and "Product ID", then
-write down the values, these values are displayed just before the name
+Run the command and look for the "Vendor ID" and "Product ID" and write
+down the values. These values are displayed just before the name
 of the device with the following format:
 
 ::
@@ -37,7 +36,7 @@ so you can get the "Interface" number and "End Point"
     # lsusb -vvv -d xxxx:xxxx | grep bEndpointAddress | grep OUT
           bEndpointAddress     0x01  EP 1 OUT
 
-The first command will yields the "Interface" number that must be handy
+The first command will yield the "Interface" number that must be handy
 to have and the second yields the "Output Endpoint" address.
 
 **USB Printer initialization**
@@ -47,9 +46,9 @@ to have and the second yields the "Output Endpoint" address.
     Epson = printer.Usb(0x04b8,0x0202)
 
 By default the "Interface" number is "0" and the "Output Endpoint"
-address is "0x01", if you have other values then you can define with
+address is "0x01". If you have other values then you can define them on
 your instance. So, assuming that we have another printer where in\_ep is
-on 0x81 and out\_ep=0x02, then the printer definition should looks like:
+on 0x81 and out\_ep=0x02, then the printer definition should look like:
 
 **Generic USB Printer initialization**
 
@@ -72,10 +71,10 @@ IP by DHCP or you set it manually.
 Serial printer
 ^^^^^^^^^^^^^^
 
-Must of the default values set by the DIP switches for the serial
+Most of the default values set by the DIP switches for the serial
 printers, have been set as default on the serial printer class, so the
-only thing you need to know is which serial port the printer is hooked
-up.
+only thing you need to know is which serial port the printer is connected
+to.
 
 **Serial printer initialization**
 
@@ -86,9 +85,9 @@ up.
 Other printers
 ^^^^^^^^^^^^^^
 
-Some printers under /dev can't be used or initialized with any of the
+Some printers under `/dev` can't be used or initialized with any of the
 methods described above. Usually, those are printers used by printcap,
-however, if you know the device name, you could try the initialize
+however, if you know the device name, you could try to initialize by
 passing the device node name.
 
 ::
@@ -101,8 +100,8 @@ node, then you don't necessary need to pass the node name.
 Define your instance
 --------------------
 
-The following example demonstrate how to initialize the Epson TM-TI88IV
-on USB interface
+The following example demonstrates how to initialize the Epson TM-TI88IV
+on a USB interface.
 
 ::
 
@@ -120,19 +119,157 @@ on USB interface
     # Cut paper
     Epson.cut()
 
-How to update your code for USB printers
-----------------------------------------
+Configuration File
+------------------
 
-Old code
+You can create a configuration file for python-escpos. This will
+allow you to use the CLI, and skip some setup when using the library
+programmatically.
+
+The default configuration file is named ``config.yaml`` and uses the YAML
+format. For windows it is probably at::
+
+    %appdata%/python-escpos/config.yaml
+
+And for linux::
+
+        $HOME/.config/python-escpos/config.yaml
+
+If you aren't sure, run::
+
+        from escpos import config
+        c = config.Config()
+        c.load()
+
+If it can't find the configuration file in the default location, it will tell
+you where it's looking. You can always pass a path, or a list of paths, to
+the ``load()`` method.
+
+To load the configured printer, run::
+
+        from escpos import config
+        c = config.Config()
+        printer = c.printer()
+
+
+The printer section
+^^^^^^^^^^^^^^^^^^^
+
+The ``printer`` configuration section defines a default printer to create.
+
+The only required paramter is ``type``. The value of this should be one of the
+printers defined in :doc:`/user/printers`.
+
+The rest of the parameters are whatever you want to pass to the printer.
+
+An example file printer::
+
+        printer:
+                type: File
+                devfile: /dev/someprinter
+
+And for a network printer::
+
+        printer:
+                type: network
+                host: 127.0.0.1
+                port: 9000
+
+Printing text right
+-------------------
+Python-escpos is designed to accept unicode. So make sure that you use ``u'strings'`` or import ``unicode_literals``
+from ``__future__`` if you are on Python 2. On Python 3 you should be fine.
+
+For normal usage you can simply pass your text to the printers ``text()``-function. It will automatically guess
+the right codepage and then send the encoded data to the printer. If this feature does not work, please try to
+isolate the error and then create an issue on the Github project page.
+
+If you want or need to you can manually set the codepage. For this please use the ``charcode()``-function. You can set
+any key-value that is in ``CHARCODE``. If something is wrong, an ``CharCodeError`` will be raised.
+After you have manually set the codepage the printer won't change it anymore. You can revert to normal behaviour
+by setting charcode to ``AUTO``.
+
+Advanced Usage: Print from binary blob
+--------------------------------------
+
+Imagine you have a file with ESC/POS-commands in binary form. This could be useful for testing capabilities of your
+printer with a known working combination of commands.
+You can print this data with the following code, using the standard methods of python-escpos. (This is an
+advantage of the fact that `_raw()` accepts binary strings.)
 
 ::
 
-    Epson = escpos.Escpos(0x04b8,0x0202,0)
+    from escpos import printer
+    p = printer.Serial()  # adapt this to your printer model
 
-New code
+    file = open("binary-blob.bin", "rb")  # read in the file containing your commands in binary-mode
+    data = file.read()
+    file.close()
 
-::
+    p._raw(data)
+
+That's all, the printer should then print your data. You can also use this technique to let others reproduce an issue
+that you have found. (Just "print" your commands to a File-printer on your local filesystem.)
+However, please keep in mind, that often it is easier and better to just supply the code that you are using.
+
+Here you can download an example, that will print a set of common barcodes:
+
+    * :download:`barcode.bin </download/barcode.bin>` by `@mike42 <https://github.com/mike42>`_
+
+Advanced Usage: change capabilities-profile
+-------------------------------------------
+
+Packaged together with the escpos-code is a capabilities-file. This file in
+JSON-format describes the capabilities of different printers. It is developed and hosted in
+`escpos-printer-db <https://github.com/receipt-print-hq/escpos-printer-db>`_.
+
+Certain applications like the usage of `cx_freeze <https://cx-freeze.readthedocs.io>`_ might change the
+packaging structure. This leads to the capabilities-profile not being found.
+In this case you can use the environment-variable `ESCPOS_CAPABILITIES_FILE`.
+The following code is an example.
+
+.. code-block:: shell
+
+   # use packaged capabilities-profile
+   python-escpos cut
+
+   # use capabilities-profile that you have put in /usr/python-escpos
+   export ESCPOS_CAPABILITIES_FILE=/usr/python-escpos/capabilities.json
+   python-escpos cut
+
+   # use packaged file again
+   unset ESCPOS_CAPABILITIES_FILE
+   python-escpos cut
+
+
+Hint: preprocess printing
+-------------------------
+
+Printing images directly to the printer is rather slow.
+One factor that slows down the process is the transmission over e.g. serial port.
+
+Apart from configuring your printer to use the maximum baudrate (in the case of serial-printers), there is not much
+that you can do.
+However you could use the :py:class:`escpos.printer.Dummy`-printer to preprocess your image.
+This is probably best explained by an example:
+
+.. code-block:: Python
+
+   from escpos.printer import Serial, Dummy
+
+   p = Serial()
+   d = Dummy()
+
+   # create ESC/POS for the print job, this should go really fast
+   d.text("This is my image:\n")
+   d.image("funny_cat.png")
+   d.cut()
+
+   # send code to printer
+   p._raw(d.output)
+
+This way you could also store the code in a file and print it later.
+You could then for example print the code from another process than your main-program and thus reduce the waiting time.
+(Of course this will not make the printer print faster.)
 
-    Epson = printer.Usb(0x04b8,0x0202)
 
-Nothe that "0" which is the interface number is no longer needed.

escpos/__init__.py

@@ -1 +0,0 @@
-__all__ = ["constants","escpos","exceptions","printer"]

escpos/constants.py

@@ -1,86 +0,0 @@
-""" ESC/POS Commands (Constants) """
-
-# Feed control sequences
-CTL_LF     = '\x0a'              # Print and line feed
-CTL_FF     = '\x0c'              # Form feed
-CTL_CR     = '\x0d'              # Carriage return
-CTL_HT     = '\x09'              # Horizontal tab
-CTL_SET_HT = '\x1b\x44'          # Set horizontal tab positions
-CTL_VT     = '\x1b\x64\x04'      # Vertical tab
-# Printer hardware
-HW_INIT    = '\x1b\x40'          # Clear data in buffer and reset modes
-HW_SELECT  = '\x1b\x3d\x01'      # Printer select
-HW_RESET   = '\x1b\x3f\x0a\x00'  # Reset printer hardware
-# Cash Drawer
-CD_KICK_2  = '\x1b\x70\x00'      # Sends a pulse to pin 2 [] 
-CD_KICK_5  = '\x1b\x70\x01'      # Sends a pulse to pin 5 [] 
-# Paper
-PAPER_FULL_CUT  = '\x1d\x56\x00' # Full cut paper
-PAPER_PART_CUT  = '\x1d\x56\x01' # Partial cut paper
-# Text format   
-TXT_NORMAL      = '\x1b\x21\x00' # Normal text
-TXT_2HEIGHT     = '\x1b\x21\x10' # Double height text
-TXT_2WIDTH      = '\x1b\x21\x20' # Double width text
-TXT_4SQUARE     = '\x1b\x21\x30' # Quad area text
-TXT_UNDERL_OFF  = '\x1b\x2d\x00' # Underline font OFF
-TXT_UNDERL_ON   = '\x1b\x2d\x01' # Underline font 1-dot ON
-TXT_UNDERL2_ON  = '\x1b\x2d\x02' # Underline font 2-dot ON
-TXT_BOLD_OFF    = '\x1b\x45\x00' # Bold font OFF
-TXT_BOLD_ON     = '\x1b\x45\x01' # Bold font ON
-TXT_FONT_A      = '\x1b\x4d\x00' # Font type A
-TXT_FONT_B      = '\x1b\x4d\x01' # Font type B
-TXT_ALIGN_LT    = '\x1b\x61\x00' # Left justification
-TXT_ALIGN_CT    = '\x1b\x61\x01' # Centering
-TXT_ALIGN_RT    = '\x1b\x61\x02' # Right justification
-# Char code table
-CHARCODE_PC437  = '\x1b\x74\x00' # USA: Standard Europe
-CHARCODE_JIS    = '\x1b\x74\x01' # Japanese Katakana
-CHARCODE_PC850  = '\x1b\x74\x02' # Multilingual
-CHARCODE_PC860  = '\x1b\x74\x03' # Portuguese
-CHARCODE_PC863  = '\x1b\x74\x04' # Canadian-French
-CHARCODE_PC865  = '\x1b\x74\x05' # Nordic
-CHARCODE_WEU    = '\x1b\x74\x06' # Simplified Kanji, Hirakana
-CHARCODE_GREEK  = '\x1b\x74\x07' # Simplified Kanji
-CHARCODE_HEBREW = '\x1b\x74\x08' # Simplified Kanji
-CHARCODE_PC1252 = '\x1b\x74\x10' # Western European Windows Code Set
-CHARCODE_PC866  = '\x1b\x74\x12' # Cirillic #2
-CHARCODE_PC852  = '\x1b\x74\x13' # Latin 2
-CHARCODE_PC858  = '\x1b\x74\x14' # Euro
-CHARCODE_THAI42 = '\x1b\x74\x15' # Thai character code 42
-CHARCODE_THAI11 = '\x1b\x74\x16' # Thai character code 11
-CHARCODE_THAI13 = '\x1b\x74\x17' # Thai character code 13
-CHARCODE_THAI14 = '\x1b\x74\x18' # Thai character code 14
-CHARCODE_THAI16 = '\x1b\x74\x19' # Thai character code 16
-CHARCODE_THAI17 = '\x1b\x74\x1a' # Thai character code 17
-CHARCODE_THAI18 = '\x1b\x74\x1b' # Thai character code 18
-# Barcode format
-BARCODE_TXT_OFF = '\x1d\x48\x00' # HRI barcode chars OFF
-BARCODE_TXT_ABV = '\x1d\x48\x01' # HRI barcode chars above
-BARCODE_TXT_BLW = '\x1d\x48\x02' # HRI barcode chars below
-BARCODE_TXT_BTH = '\x1d\x48\x03' # HRI barcode chars both above and below
-BARCODE_FONT_A  = '\x1d\x66\x00' # Font type A for HRI barcode chars
-BARCODE_FONT_B  = '\x1d\x66\x01' # Font type B for HRI barcode chars
-BARCODE_HEIGHT  = '\x1d\x68\x64' # Barcode Height [1-255]
-BARCODE_WIDTH   = '\x1d\x77\x03' # Barcode Width  [2-6]
-BARCODE_UPC_A   = '\x1d\x6b\x00' # Barcode type UPC-A
-BARCODE_UPC_E   = '\x1d\x6b\x01' # Barcode type UPC-E
-BARCODE_EAN13   = '\x1d\x6b\x02' # Barcode type EAN13
-BARCODE_EAN8    = '\x1d\x6b\x03' # Barcode type EAN8
-BARCODE_CODE39  = '\x1d\x6b\x04' # Barcode type CODE39
-BARCODE_ITF     = '\x1d\x6b\x05' # Barcode type ITF
-BARCODE_NW7     = '\x1d\x6b\x06' # Barcode type NW7
-# Image format  
-S_RASTER_N      = '\x1d\x76\x30\x00' # Set raster image normal size
-S_RASTER_2W     = '\x1d\x76\x30\x01' # Set raster image double width
-S_RASTER_2H     = '\x1d\x76\x30\x02' # Set raster image double height
-S_RASTER_Q      = '\x1d\x76\x30\x03' # Set raster image quadruple
-# Printing Density
-PD_N50          = '\x1d\x7c\x00' # Printing Density -50%
-PD_N37          = '\x1d\x7c\x01' # Printing Density -37.5%
-PD_N25          = '\x1d\x7c\x02' # Printing Density -25%
-PD_N12          = '\x1d\x7c\x03' # Printing Density -12.5%
-PD_0            = '\x1d\x7c\x04' # Printing Density  0%
-PD_P50          = '\x1d\x7c\x08' # Printing Density +50%
-PD_P37          = '\x1d\x7c\x07' # Printing Density +37.5%
-PD_P25          = '\x1d\x7c\x06' # Printing Density +25%
-PD_P12          = '\x1d\x7c\x05' # Printing Density +12.5%

escpos/escpos.py

@@ -1,360 +0,0 @@
-#!/usr/bin/python
-"""
-@author: Manuel F Martinez <manpaz@bashlinux.com>
-@organization: Bashlinux
-@copyright: Copyright (c) 2012 Bashlinux
-@license: GNU GPL v3
-"""
-
-try:
-    import Image
-except ImportError:
-    from PIL import Image
-
-import qrcode
-import time
-
-from constants import *
-from exceptions import *
-
-class Escpos:
-    """ ESC/POS Printer object """
-    device    = None
-
-
-    def _check_image_size(self, size):
-        """ Check and fix the size of the image to 32 bits """
-        if size % 32 == 0:
-            return (0, 0)
-        else:
-            image_border = 32 - (size % 32)
-            if (image_border % 2) == 0:
-                return (image_border / 2, image_border / 2)
-            else:
-                return (image_border / 2, (image_border / 2) + 1)
-
-
-    def _print_image(self, line, size):
-        """ Print formatted image """
-        i = 0
-        cont = 0
-        buffer = ""
-       
-        self._raw(S_RASTER_N)
-        buffer = "%02X%02X%02X%02X" % (((size[0]/size[1])/8), 0, size[1]&0xff, size[1]>>8)
-        self._raw(buffer.decode('hex'))
-        buffer = ""
-
-        while i < len(line):
-            hex_string = int(line[i:i+8],2)
-            buffer += "%02X" % hex_string
-            i += 8
-            cont += 1
-            if cont % 4 == 0:
-                self._raw(buffer.decode("hex"))
-                buffer = ""
-                cont = 0
-
-
-    def _convert_image(self, im):
-        """ Parse image and prepare it to a printable format """
-        pixels   = []
-        pix_line = ""
-        im_left  = ""
-        im_right = ""
-        switch   = 0
-        img_size = [ 0, 0 ]
-
-
-        if im.size[0] > 512:
-            print  ("WARNING: Image is wider than 512 and could be truncated at print time ")
-        if im.size[1] > 0xffff:
-            raise ImageSizeError()
-
-        im_border = self._check_image_size(im.size[0])
-        for i in range(im_border[0]):
-            im_left += "0"
-        for i in range(im_border[1]):
-            im_right += "0"
-
-        for y in range(im.size[1]):
-            img_size[1] += 1
-            pix_line += im_left
-            img_size[0] += im_border[0]
-            for x in range(im.size[0]):
-                img_size[0] += 1
-                RGB = im.getpixel((x, y))
-                im_color = (RGB[0] + RGB[1] + RGB[2])
-                im_pattern = "1X0"
-                pattern_len = len(im_pattern)
-                switch = (switch - 1 ) * (-1)
-                for x in range(pattern_len):
-                    if im_color <= (255 * 3 / pattern_len * (x+1)):
-                        if im_pattern[x] == "X":
-                            pix_line += "%d" % switch
-                        else:
-                            pix_line += im_pattern[x]
-                        break
-                    elif im_color > (255 * 3 / pattern_len * pattern_len) and im_color <= (255 * 3):
-                        pix_line += im_pattern[-1]
-                        break 
-            pix_line += im_right
-            img_size[0] += im_border[1]
-
-        self._print_image(pix_line, img_size)
-
-
-    def image(self,path_img):
-        """ Open image file """
-        im_open = Image.open(path_img)
-
-	# Remove the alpha channel on transparent images
-	if im_open.mode == 'RGBA':
-		im_open.load()
-		im = Image.new("RGB", im_open.size, (255, 255, 255))
-		im.paste(im_open, mask=im_open.split()[3])
-	else:
-	        im = im_open.convert("RGB")
-
-        # Convert the RGB image in printable image
-        self._convert_image(im)
-
-
-    def qr(self,text):
-        """ Print QR Code for the provided string """
-        qr_code = qrcode.QRCode(version=4, box_size=4, border=1)
-        qr_code.add_data(text)
-        qr_code.make(fit=True)
-        qr_img = qr_code.make_image()
-        im = qr_img._img.convert("RGB")
-
-        # Convert the RGB image in printable image
-        self._convert_image(im)
-
-
-    def charcode(self,code):
-        """ Set Character Code Table """
-        if code.upper() == "USA":
-            self._raw(CHARCODE_PC437)
-        elif code.upper() == "JIS":
-            self._raw(CHARCODE_JIS)
-        elif code.upper() == "MULTILINGUAL":
-            self._raw(CHARCODE_PC850)
-        elif code.upper() == "PORTUGUESE":
-            self._raw(CHARCODE_PC860)
-        elif code.upper() == "CA_FRENCH":
-            self._raw(CHARCODE_PC863)
-        elif code.upper() == "NORDIC":
-            self._raw(CHARCODE_PC865)
-        elif code.upper() == "WEST_EUROPE":
-            self._raw(CHARCODE_WEU)
-        elif code.upper() == "GREEK":
-            self._raw(CHARCODE_GREEK)
-        elif code.upper() == "HEBREW":
-            self._raw(CHARCODE_HEBREW)
-        elif code.upper() == "LATVIAN":
-            self._raw(CHARCODE_PC755)
-        elif code.upper() == "WPC1252":
-            self._raw(CHARCODE_PC1252)
-        elif code.upper() == "CIRILLIC2":
-            self._raw(CHARCODE_PC866)
-        elif code.upper() == "LATIN2":
-            self._raw(CHARCODE_PC852)
-        elif code.upper() == "EURO":
-            self._raw(CHARCODE_PC858)
-        elif code.upper() == "THAI42":
-            self._raw(CHARCODE_THAI42)
-        elif code.upper() == "THAI11":
-            self._raw(CHARCODE_THAI11)
-        elif code.upper() == "THAI13":
-            self._raw(CHARCODE_THAI13)
-        elif code.upper() == "THAI14":
-            self._raw(CHARCODE_THAI14)
-        elif code.upper() == "THAI16":
-            self._raw(CHARCODE_THAI16)
-        elif code.upper() == "THAI17":
-            self._raw(CHARCODE_THAI17)
-        elif code.upper() == "THAI18":
-            self._raw(CHARCODE_THAI18)
-        else:
-            raise CharCodeError()
-
-    def barcode(self, code, bc, width, height, pos, font):
-        """ Print Barcode """
-        # Align Bar Code()
-        self._raw(TXT_ALIGN_CT)
-        # Height
-        if height >=2 or height <=6:
-            self._raw(BARCODE_HEIGHT)
-        else:
-            raise BarcodeSizeError()
-        # Width
-        if width >= 1 or width <=255:
-            self._raw(BARCODE_WIDTH)
-        else:
-            raise BarcodeSizeError()
-        # Font
-        if font.upper() == "B":
-            self._raw(BARCODE_FONT_B)
-        else: # DEFAULT FONT: A
-            self._raw(BARCODE_FONT_A)
-        # Position
-        if pos.upper() == "OFF":
-            self._raw(BARCODE_TXT_OFF)
-        elif pos.upper() == "BOTH":
-            self._raw(BARCODE_TXT_BTH)
-        elif pos.upper() == "ABOVE":
-            self._raw(BARCODE_TXT_ABV)
-        else:  # DEFAULT POSITION: BELOW 
-            self._raw(BARCODE_TXT_BLW)
-        # Type 
-        if bc.upper() == "UPC-A":
-            self._raw(BARCODE_UPC_A)
-        elif bc.upper() == "UPC-E":
-            self._raw(BARCODE_UPC_E)
-        elif bc.upper() == "EAN13":
-            self._raw(BARCODE_EAN13)
-        elif bc.upper() == "EAN8":
-            self._raw(BARCODE_EAN8)
-        elif bc.upper() == "CODE39":
-            self._raw(BARCODE_CODE39)
-        elif bc.upper() == "ITF":
-            self._raw(BARCODE_ITF)
-        elif bc.upper() == "NW7":
-            self._raw(BARCODE_NW7)
-        else:
-            raise BarcodeTypeError()
-        # Print Code
-        if code:
-            self._raw(code)
-        else:
-            raise exception.BarcodeCodeError()
-
-        
-    def text(self, txt):
-        """ Print alpha-numeric text """
-        if txt:
-            self._raw(txt)
-        else:
-            raise TextError()
-
-
-    def set(self, align='left', font='a', type='normal', width=1, height=1, density=9):
-        """ Set text properties """
-        # Width
-        if height == 2 and width == 2:
-            self._raw(TXT_NORMAL)
-            self._raw(TXT_4SQUARE)
-        elif height == 2 and width != 2:
-            self._raw(TXT_NORMAL)
-            self._raw(TXT_2HEIGHT)
-        elif width == 2 and height != 2:
-            self._raw(TXT_NORMAL)
-            self._raw(TXT_2WIDTH)
-        else: # DEFAULT SIZE: NORMAL
-            self._raw(TXT_NORMAL)
-        # Type
-        if type.upper() == "B":
-            self._raw(TXT_BOLD_ON)
-            self._raw(TXT_UNDERL_OFF)
-        elif type.upper() == "U":
-            self._raw(TXT_BOLD_OFF)
-            self._raw(TXT_UNDERL_ON)
-        elif type.upper() == "U2":
-            self._raw(TXT_BOLD_OFF)
-            self._raw(TXT_UNDERL2_ON)
-        elif type.upper() == "BU":
-            self._raw(TXT_BOLD_ON)
-            self._raw(TXT_UNDERL_ON)
-        elif type.upper() == "BU2":
-            self._raw(TXT_BOLD_ON)
-            self._raw(TXT_UNDERL2_ON)
-        elif type.upper == "NORMAL":
-            self._raw(TXT_BOLD_OFF)
-            self._raw(TXT_UNDERL_OFF)
-        # Font
-        if font.upper() == "B":
-            self._raw(TXT_FONT_B)
-        else:  # DEFAULT FONT: A
-            self._raw(TXT_FONT_A)
-        # Align
-        if align.upper() == "CENTER":
-            self._raw(TXT_ALIGN_CT)
-        elif align.upper() == "RIGHT":
-            self._raw(TXT_ALIGN_RT)
-        elif align.upper() == "LEFT":
-            self._raw(TXT_ALIGN_LT)
-        # Density
-        if density == 0:
-            self._raw(PD_N50)
-        elif density == 1:
-            self._raw(PD_N37)
-        elif density == 2:
-            self._raw(PD_N25)
-        elif density == 3:
-            self._raw(PD_N12)
-        elif density == 4:
-            self._raw(PD_0)
-        elif density == 5:
-            self._raw(PD_P12)
-        elif density == 6:
-            self._raw(PD_P25)
-        elif density == 7:
-            self._raw(PD_P37)
-        elif density == 8:
-            self._raw(PD_P50)
-        else:# DEFAULT: DOES NOTHING
-            pass
-
-
-    def cut(self, mode=''):
-        """ Cut paper """
-        # Fix the size between last line and cut
-        # TODO: handle this with a line feed
-        self._raw("\n\n\n\n\n\n")
-        if mode.upper() == "PART":
-            self._raw(PAPER_PART_CUT)
-        else: # DEFAULT MODE: FULL CUT
-            self._raw(PAPER_FULL_CUT)
-
-
-    def cashdraw(self, pin):
-        """ Send pulse to kick the cash drawer """
-        if pin == 2:
-            self._raw(CD_KICK_2)
-        elif pin == 5:
-            self._raw(CD_KICK_5)
-        else:
-            raise CashDrawerError()
-
-
-    def hw(self, hw):
-        """ Hardware operations """
-        if hw.upper() == "INIT":
-            self._raw(HW_INIT)
-        elif hw.upper() == "SELECT":
-            self._raw(HW_SELECT)
-        elif hw.upper() == "RESET":
-            self._raw(HW_RESET)
-        else: # DEFAULT: DOES NOTHING
-            pass
-
-
-    def control(self, ctl, pos=4):
-        """ Feed control sequences """
-        # Set tab positions
-        if pos < 1 or pos > 16:
-            raise TabError()
-        else:
-            self._raw("".join([CTL_SET_HT,hex(pos)]))
-        # Set position
-        if ctl.upper() == "LF":
-            self._raw(CTL_LF)
-        elif ctl.upper() == "FF":
-            self._raw(CTL_FF)
-        elif ctl.upper() == "CR":
-            self._raw(CTL_CR)
-        elif ctl.upper() == "HT":
-            self._raw(CTL_HT)
-        elif ctl.upper() == "VT":
-            self._raw(CTL_VT)

escpos/exceptions.py

@@ -1,102 +0,0 @@
-""" ESC/POS Exceptions classes """
-
-import os
-
-class Error(Exception):
-    """ Base class for ESC/POS errors """
-    def __init__(self, msg, status=None):
-        Exception.__init__(self)
-        self.msg = msg
-        self.resultcode = 1
-        if status is not None:
-            self.resultcode = status
-
-    def __str__(self):
-        return self.msg
-
-# Result/Exit codes
-# 0  = success
-# 10 = No Barcode type defined
-# 20 = Barcode size values are out of range
-# 30 = Barcode text not supplied
-# 40 = Image height is too large
-# 50 = No string supplied to be printed
-# 60 = Invalid pin to send Cash Drawer pulse
-# 70 = Invalid number of tab positions
-# 80 = Invalid char code
-
-
-class BarcodeTypeError(Error):
-    def __init__(self, msg=""):
-        Error.__init__(self, msg)
-        self.msg = msg
-        self.resultcode = 10
-
-    def __str__(self):
-        return "No Barcode type is defined"
-
-class BarcodeSizeError(Error):
-    def __init__(self, msg=""):
-        Error.__init__(self, msg)
-        self.msg = msg
-        self.resultcode = 20
-
-    def __str__(self):
-        return "Barcode size is out of range"
-
-class BarcodeCodeError(Error):
-    def __init__(self, msg=""):
-        Error.__init__(self, msg)
-        self.msg = msg
-        self.resultcode = 30
-
-    def __str__(self):
-        return "Code was not supplied"
-
-class ImageSizeError(Error):
-    def __init__(self, msg=""):
-        Error.__init__(self, msg)
-        self.msg = msg
-        self.resultcode = 40
-
-    def __str__(self):
-        return "Image height is longer than 255px and can't be printed"
-
-class TextError(Error):
-    def __init__(self, msg=""):
-        Error.__init__(self, msg)
-        self.msg = msg
-        self.resultcode = 50
-
-    def __str__(self):
-        return "Text string must be supplied to the text() method"
-
-
-class CashDrawerError(Error):
-    def __init__(self, msg=""):
-        Error.__init__(self, msg)
-        self.msg = msg
-        self.resultcode = 60
-
-    def __str__(self):
-        return "Valid pin must be set to send pulse"
-
-
-class TabError(Error):
-    def __init__(self, msg=""):
-        Error.__init__(self, msg)
-        self.msg = msg
-        self.resultcode = 70
-
-    def __str__(self):
-        return "Valid tab positions must be in the range 0 to 16"
-
-
-class CharCodeError(Error):
-    def __init__(self, msg=""):
-        Error.__init__(self, msg)
-        self.msg = msg
-        self.resultcode = 70
-
-    def __str__(self):
-        return "Valid char code must be set"

escpos/printer.py

@@ -1,191 +0,0 @@
-#!/usr/bin/python
-"""
-@author: Manuel F Martinez <manpaz@bashlinux.com>
-@organization: Bashlinux
-@copyright: Copyright (c) 2012 Bashlinux
-@license: GNU GPL v3
-"""
-
-import usb.core
-import usb.util
-import serial
-import socket
-
-from escpos import *
-from constants import *
-from exceptions import *
-
-class Usb(Escpos):
-    """ Define USB printer """
-
-    def __init__(self, idVendor, idProduct, interface=0, in_ep=0x82, out_ep=0x01):
-        """
-        @param idVendor  : Vendor ID
-        @param idProduct : Product ID
-        @param interface : USB device interface
-        @param in_ep     : Input end point
-        @param out_ep    : Output end point
-        """
-        self.idVendor  = idVendor
-        self.idProduct = idProduct
-        self.interface = interface
-        self.in_ep     = in_ep
-        self.out_ep    = out_ep
-        self.open()
-
-
-    def open(self):
-        """ Search device on USB tree and set is as escpos device """
-        self.device = usb.core.find(idVendor=self.idVendor, idProduct=self.idProduct)
-        if self.device is None:
-            print "Cable isn't plugged in"
-
-        check_driver = None
-
-        try:
-            check_driver = self.device.is_kernel_driver_active(0)
-        except NotImplementedError:
-            pass
-
-        if check_driver is None or check_driver:
-            try:
-                self.device.detach_kernel_driver(0)
-            except usb.core.USBError as e:
-                if check_driver is not None:
-                    print "Could not detatch kernel driver: %s" % str(e)
-
-        try:
-            self.device.set_configuration()
-            self.device.reset()
-        except usb.core.USBError as e:
-            print "Could not set configuration: %s" % str(e)
-
-
-    def _raw(self, msg):
-        """ Print any command sent in raw format """
-        self.device.write(self.out_ep, msg, self.interface)
-
-
-    def __del__(self):
-        """ Release USB interface """
-        if self.device:
-            usb.util.dispose_resources(self.device)
-        self.device = None
-
-
-
-class Serial(Escpos):
-    """ Define Serial printer """
-
-    def __init__(self, devfile="/dev/ttyS0", baudrate=9600, bytesize=8, timeout=1,
-                 parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE,
-                 xonxoff=False , dsrdtr=True):
-        """
-        @param devfile  : Device file under dev filesystem
-        @param baudrate : Baud rate for serial transmission
-        @param bytesize : Serial buffer size
-        @param timeout  : Read/Write timeout
-        
-        @param parity   : Parity checking
-        @param stopbits : Number of stop bits
-        @param xonxoff  : Software flow control
-        @param dsrdtr   : Hardware flow control (False to enable RTS/CTS)
-        """
-        self.devfile  = devfile
-        self.baudrate = baudrate
-        self.bytesize = bytesize
-        self.timeout  = timeout
-        
-        self.parity = parity
-        self.stopbits = stopbits
-        self.xonxoff = xonxoff
-        self.dsrdtr = dsrdtr
-        
-        self.open()
-
-
-    def open(self):
-        """ Setup serial port and set is as escpos device """
-        self.device = serial.Serial(port=self.devfile, baudrate=self.baudrate,
-                                    bytesize=self.bytesize, parity=self.parity,
-                                    stopbits=self.stopbits, timeout=self.timeout,
-                                    xonxoff=self.xonxoff, dsrdtr=self.dsrdtr)
-
-        if self.device is not None:
-            print "Serial printer enabled"
-        else:
-            print "Unable to open serial printer on: %s" % self.devfile
-
-
-    def _raw(self, msg):
-        """ Print any command sent in raw format """
-        self.device.write(msg)
-
-
-    def __del__(self):
-        """ Close Serial interface """
-        if self.device is not None:
-            self.device.close()
-
-
-
-class Network(Escpos):
-    """ Define Network printer """
-
-    def __init__(self,host,port=9100):
-        """
-        @param host : Printer's hostname or IP address
-        @param port : Port to write to
-        """
-        self.host = host
-        self.port = port
-        self.open()
-
-
-    def open(self):
-        """ Open TCP socket and set it as escpos device """
-        self.device = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-        self.device.connect((self.host, self.port))
-
-        if self.device is None:
-            print "Could not open socket for %s" % self.host
-
-
-    def _raw(self, msg):
-        """ Print any command sent in raw format """
-        self.device.send(msg)
-
-
-    def __del__(self):
-        """ Close TCP connection """
-        self.device.close()
-
-
-
-class File(Escpos):
-    """ Define Generic file printer """
-
-    def __init__(self, devfile="/dev/usb/lp0"):
-        """
-        @param devfile : Device file under dev filesystem
-        """
-        self.devfile = devfile
-        self.open()
-
-
-    def open(self):
-        """ Open system file """
-        self.device = open(self.devfile, "wb")
-
-        if self.device is None:
-            print "Could not open the specified file %s" % self.devfile
-
-
-    def _raw(self, msg):
-        """ Print any command sent in raw format """
-        self.device.write(msg);
-
-
-    def __del__(self):
-        """ Close system file """
-        self.device.close()

examples/codepage_tables.py

@@ -0,0 +1,63 @@
+"""Prints code page tables.
+"""
+
+from __future__ import print_function
+
+import six
+import sys
+
+from escpos import printer
+from escpos.constants import CODEPAGE_CHANGE, ESC, CTL_LF, CTL_FF, CTL_CR, CTL_HT, CTL_VT
+
+
+def main():
+    dummy = printer.Dummy()
+
+    dummy.hw('init')
+
+    for codepage in sys.argv[1:] or ['USA']:
+        dummy.set(height=2, width=2)
+        dummy._raw(codepage + "\n\n\n")
+        print_codepage(dummy, codepage)
+        dummy._raw("\n\n")
+
+    dummy.cut()
+
+    print(dummy.output)
+
+
+def print_codepage(printer, codepage):
+    if codepage.isdigit():
+        codepage = int(codepage)
+        printer._raw(CODEPAGE_CHANGE + six.int2byte(codepage))
+        printer._raw("after")
+    else:
+        printer.charcode(codepage)
+
+    sep = ""
+
+    # Table header
+    printer.set(text_type='B')
+    printer._raw("  {}\n".format(sep.join(map(lambda s: hex(s)[2:], range(0, 16)))))
+    printer.set()
+
+    # The table
+    for x in range(0, 16):
+        # First column
+        printer.set(text_type='B')
+        printer._raw("{} ".format(hex(x)[2:]))
+        printer.set()
+
+        for y in range(0, 16):
+            byte = six.int2byte(x * 16 + y)
+
+            if byte in (ESC, CTL_LF, CTL_FF, CTL_CR, CTL_HT, CTL_VT):
+                byte = ' '
+
+            printer._raw(byte)
+            printer._raw(sep)
+        printer._raw('\n')
+
+
+if __name__ == '__main__':
+    main()

readthedocs.yml

@@ -0,0 +1,7 @@
+formats:
+  - pdf
+  - epub
+requirements_file: doc/requirements.txt
+python:
+  version: 2
+  setup_py_install: true

requirements.txt

@@ -0,0 +1 @@
+-e .

setup.cfg

@@ -0,0 +1,12 @@
+[nosetests]
+verbosity=3
+with-doctest=1
+
+[bdist_wheel]
+# This flag says that the code is written to work on both Python 2 and Python 3.
+universal=1
+
+[flake8]
+exclude = .git,.tox,.github,.eggs,__pycache__,doc/conf.py,build,dist,capabilities-data,test,src/escpos/constants.py
+max-line-length = 120
+# future-imports = absolute_import, division, print_function, unicode_literals  # we are not there yet

setup.py

@@ -1,29 +1,141 @@
-#!/usr/bin/python
+#!/usr/bin/env python
+
+import os
+import sys
+from setuptools import find_packages, setup
+from setuptools.command.test import test as test_command
+
+
+base_dir = os.path.dirname(__file__)
+src_dir = os.path.join(base_dir, "src")
+
+# When executing the setup.py, we need to be able to import ourselves, this
+# means that we need to add the src/ directory to the sys.path.
+sys.path.insert(0, src_dir)
+
+
+def read(fname):
+    """read file from same path as setup.py"""
+    return open(os.path.join(os.path.dirname(__file__), fname)).read()
+
+
+class Tox(test_command):
+    """proxy class that enables tox to be run with setup.py test"""
+    user_options = [('tox-args=', 'a', "Arguments to pass to tox")]
+
+    def initialize_options(self):
+        """initialize the user-options"""
+        test_command.initialize_options(self)
+        self.tox_args = None
+
+    def finalize_options(self):
+        """finalize user-options"""
+        test_command.finalize_options(self)
+        self.test_args = []
+        self.test_suite = True
+
+    def run_tests(self):
+        """run tox and pass on user-options"""
+        # import here, cause outside the eggs aren't loaded
+        import tox
+        import shlex
+        args = self.tox_args
+        if args:
+            args = shlex.split(self.tox_args)
+        errno = tox.cmdline(args=args)
+        sys.exit(errno)
+
+
+setuptools_scm_template = """\
+# coding: utf-8
+# file generated by setuptools_scm
+# don't change, don't track in version control
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+version = '{version}'
+"""
 
-from distutils.core import setup
 
 setup(
-    name='escpos',
-    version='1.0.9',
-    url='https://github.com/manpaz/python-escpos',
-    download_url='https://github.com/manpaz/python-escpos.git',
+    name='python-escpos',
+    use_scm_version={
+        'write_to': 'src/escpos/version.py',
+        'write_to_template': setuptools_scm_template,
+    },
+    url='https://github.com/python-escpos/python-escpos',
+    download_url='https://github.com/python-escpos/python-escpos/archive/master.zip',
     description='Python library to manipulate ESC/POS Printers',
-    license='GNU GPL v3',
-    long_description=open('README').read(),
-    author='Manuel F Martinez',
+    bugtrack_url='https://github.com/python-escpos/python-escpos/issues',
+    license='MIT',
+    long_description=read('README.rst'),
+    author='Manuel F Martinez and others',
     author_email='manpaz@bashlinux.com',
-    platforms=['linux'],
-    packages=[
-        'escpos',
+    maintainer='Patrick Kanzler',
+    maintainer_email='dev@pkanzler.de',
+    keywords=[
+        'ESC/POS',
+        'thermoprinter',
+        'voucher printer',
+        'printing',
+        'receipt,',
     ],
-    package_data={'': ['COPYING']},
+    platforms='any',
+    package_dir={"": "src"},
+    packages=find_packages(where="src", exclude=["tests", "tests.*"]),
+    package_data={'': ['COPYING', 'src/escpos/capabilities.json']},
+    include_package_data=True,
     classifiers=[
-        'Development Status :: 1 - Alpha',
-        'License :: OSI Approved :: GNU GPL v3',
-        'Operating System :: GNU/Linux',
+        'Development Status :: 4 - Beta',
+        'Environment :: Console',
         'Intended Audience :: Developers',
+        'License :: OSI Approved :: MIT License',
+        'Operating System :: OS Independent',
         'Programming Language :: Python',
-        'Topic :: System :: Pheripherals',
+        'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.3',
+        'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: Implementation :: CPython',
+        'Programming Language :: Python :: Implementation :: PyPy',
         'Topic :: Software Development :: Libraries :: Python Modules',
+        'Topic :: Office/Business :: Financial :: Point-Of-Sale',
     ],
+    install_requires=[
+        'pyusb>=1.0.0',
+        'Pillow>=2.0',
+        'qrcode>=4.0',
+        'pyserial',
+        'six',
+        'appdirs',
+        'pyyaml',
+        'argparse',
+        'argcomplete',
+        'future'
+    ],
+    setup_requires=[
+        'setuptools_scm',
+    ],
+    tests_require=[
+        'jaconv',
+        'tox',
+        'pytest',
+        'pytest-cov',
+        'pytest-mock',
+        'nose',
+        'scripttest',
+        'mock',
+        'hypothesis',
+        'flake8'
+    ],
+    cmdclass={'test': Tox},
+    entry_points={
+        'console_scripts': [
+            'python-escpos = escpos.cli:main'
+        ]
+    },
 )

src/escpos/__init__.py

@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+"""
+python-escpos enables you to manipulate escpos-printers
+"""
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+__all__ = ["constants", "escpos", "exceptions", "printer"]
+
+try:
+    from .version import version as __version__  # noqa
+except ImportError:  # pragma: no cover
+    raise ImportError(
+        'Failed to find (autogenerated) version.py. '
+        'This might be because you are installing from GitHub\'s tarballs, '
+        'use the PyPI ones.'
+    )

src/escpos/capabilities.json

@@ -0,0 +1 @@
+../../capabilities-data/dist/capabilities.json

src/escpos/capabilities.py

@@ -0,0 +1,119 @@
+import re
+import six
+from os import environ, path
+import yaml
+
+# Load external printer database
+if 'ESCPOS_CAPABILITIES_FILE' in environ:
+    file_path = environ['ESCPOS_CAPABILITIES_FILE']
+else:
+    file_path = path.join(path.dirname(__file__), 'capabilities.json')
+
+with open(file_path) as f:
+    CAPABILITIES = yaml.load(f)
+
+PROFILES = CAPABILITIES['profiles']
+
+
+class NotSupported(Exception):
+    """Raised if a requested feature is not suppored by the
+    printer profile.
+    """
+    pass
+
+
+BARCODE_B = 'barcodeB'
+
+
+class BaseProfile(object):
+    """This respresents a printer profile.
+
+    A printer profile knows about the number of columns, supported
+    features, colors and more.
+    """
+
+    profile_data = {}
+
+    def __getattr__(self, name):
+        return self.profile_data[name]
+
+    def get_font(self, font):
+        """Return the escpos index for `font`. Makes sure that
+        the requested `font` is valid.
+        """
+        font = {'a': 0, 'b': 1}.get(font, font)
+        if not six.text_type(font) in self.fonts:
+            raise NotSupported(
+                '"{}" is not a valid font in the current profile'.format(font))
+        return font
+
+    def get_columns(self, font):
+        """ Return the number of columns for the given font.
+        """
+        font = self.get_font(font)
+        return self.fonts[six.text_type(font)]['columns']
+
+    def supports(self, feature):
+        """Return true/false for the given feature.
+        """
+        return self.features.get(feature)
+
+    def get_code_pages(self):
+        """Return the support code pages as a {name: index} dict.
+        """
+        return {v: k for k, v in self.codePages.items()}
+
+
+def get_profile(name=None, **kwargs):
+    """Get the profile by name; if no name is given, return the
+    default profile.
+    """
+    if isinstance(name, Profile):
+        return name
+
+    clazz = get_profile_class(name or 'default')
+    return clazz(**kwargs)
+
+
+CLASS_CACHE = {}
+
+
+def get_profile_class(name):
+    """For the given profile name, load the data from the external
+    database, then generate dynamically a class.
+    """
+    if name not in CLASS_CACHE:
+        profile_data = PROFILES[name]
+        profile_name = clean(name)
+        class_name = '{}{}Profile'.format(
+            profile_name[0].upper(), profile_name[1:])
+        new_class = type(class_name, (BaseProfile,), {'profile_data': profile_data})
+        CLASS_CACHE[name] = new_class
+
+    return CLASS_CACHE[name]
+
+
+def clean(s):
+    # Remove invalid characters
+    s = re.sub('[^0-9a-zA-Z_]', '', s)
+    # Remove leading characters until we find a letter or underscore
+    s = re.sub('^[^a-zA-Z_]+', '', s)
+    return str(s)
+
+
+class Profile(get_profile_class('default')):
+    """
+    For users, who want to provide their profile
+    """
+
+    def __init__(self, columns=None, features=None):
+        super(Profile, self).__init__()
+
+        self.columns = columns
+        self.features = features or {}
+
+    def get_columns(self, font):
+        if self.columns is not None:
+            return self.columns
+
+        return super(Profile, self).get_columns(font)

src/escpos/cli.py

@@ -0,0 +1,581 @@
+#!/usr/bin/env python
+# PYTHON_ARGCOMPLETE_OK
+""" CLI
+
+This module acts as a command line interface for python-escpos. It mirrors
+closely the available ESCPOS commands while adding a couple extra ones for convience.
+
+It requires you to have a configuration file. See documentation for details.
+
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import argparse
+try:
+    import argcomplete
+except ImportError:
+    # this CLI works nevertheless without argcomplete
+    pass  # noqa
+import sys
+import six
+from . import config
+from . import version
+
+
+# Must be defined before it's used in DEMO_FUNCTIONS
+def str_to_bool(string):
+    """ Used as a type in argparse so that we get back a proper
+    bool instead of always True
+    """
+    return string.lower() in ('y', 'yes', '1', 'true')
+
+
+# A list of functions that work better with a newline to be sent after them.
+REQUIRES_NEWLINE = ('qr', 'barcode', 'text', 'block_text')
+
+
+# Used in demo method
+# Key: The name of escpos function and the argument passed on the CLI. Some
+#   manual translation is done in the case of barcodes_a -> barcode.
+# Value: A list of dictionaries to pass to the escpos function as arguments.
+DEMO_FUNCTIONS = {
+    'text': [
+        {'txt': 'Hello, World!\n', }
+    ],
+    'qr': [
+        {'content': 'This tests a QR code'},
+        {'content': 'https://en.wikipedia.org/'}
+    ],
+    'barcodes_a': [
+        {'bc': 'UPC-A', 'code': '13243546576'},
+        {'bc': 'UPC-E', 'code': '132435'},
+        {'bc': 'EAN13', 'code': '1324354657687'},
+        {'bc': 'EAN8', 'code': '1324354'},
+        {'bc': 'CODE39', 'code': 'TEST'},
+        {'bc': 'ITF', 'code': '55867492279103'},
+        {'bc': 'NW7', 'code': 'A00000000A'},
+    ],
+    'barcodes_b': [
+        {'bc': 'UPC-A', 'code': '13243546576', 'function_type': 'B'},
+        {'bc': 'UPC-E', 'code': '132435', 'function_type': 'B'},
+        {'bc': 'EAN13', 'code': '1324354657687', 'function_type': 'B'},
+        {'bc': 'EAN8', 'code': '1324354', 'function_type': 'B'},
+        {'bc': 'CODE39', 'code': 'TEST', 'function_type': 'B'},
+        {'bc': 'ITF', 'code': '55867492279103', 'function_type': 'B'},
+        {'bc': 'NW7', 'code': 'A00000000A', 'function_type': 'B'},
+        {'bc': 'CODE93', 'code': 'A00000000A', 'function_type': 'B'},
+        {'bc': 'CODE93', 'code': '1324354657687', 'function_type': 'B'},
+        {'bc': 'CODE128A', 'code': 'TEST', 'function_type': 'B'},
+        {'bc': 'CODE128B', 'code': 'TEST', 'function_type': 'B'},
+        {'bc': 'CODE128C', 'code': 'TEST', 'function_type': 'B'},
+        {'bc': 'GS1-128', 'code': '00123456780000000001', 'function_type': 'B'},
+        {'bc': 'GS1 DataBar Omnidirectional', 'code': '0000000000000', 'function_type': 'B'},
+        {'bc': 'GS1 DataBar Truncated', 'code': '0000000000000', 'function_type': 'B'},
+        {'bc': 'GS1 DataBar Limited', 'code': '0000000000000', 'function_type': 'B'},
+        {'bc': 'GS1 DataBar Expanded', 'code': '00AAAAAAA', 'function_type': 'B'},
+    ],
+}
+
+# Used to build the CLI
+# A list of dictionaries. Each dict is a CLI argument.
+# Keys:
+# parser: A dict of args for command_parsers.add_parser
+# defaults: A dict of args for subparser.set_defaults
+# arguments: A list of dicts of args for subparser.add_argument
+ESCPOS_COMMANDS = [
+    {
+        'parser': {
+            'name': 'qr',
+            'help': 'Print a QR code',
+        },
+        'defaults': {
+            'func': 'qr',
+        },
+        'arguments': [
+            {
+                'option_strings': ('--content',),
+                'help': 'Text to print as a qr code',
+                'required': True,
+            },
+            {
+                'option_strings': ('--size',),
+                'help': 'QR code size (1-16) [default:3]',
+                'required': False,
+                'type': int,
+            }
+        ],
+    },
+    {
+        'parser': {
+            'name': 'barcode',
+            'help': 'Print a barcode',
+        },
+        'defaults': {
+            'func': 'barcode',
+        },
+        'arguments': [
+            {
+                'option_strings': ('--code',),
+                'help': 'Barcode data to print',
+                'required': True,
+            },
+            {
+                'option_strings': ('--bc',),
+                'help': 'Barcode format',
+                'required': True,
+            },
+            {
+                'option_strings': ('--height',),
+                'help': 'Barcode height in px',
+                'type': int,
+            },
+            {
+                'option_strings': ('--width',),
+                'help': 'Barcode width',
+                'type': int,
+            },
+            {
+                'option_strings': ('--pos',),
+                'help': 'Label position',
+                'choices': ['BELOW', 'ABOVE', 'BOTH', 'OFF'],
+            },
+            {
+                'option_strings': ('--font',),
+                'help': 'Label font',
+                'choices': ['A', 'B'],
+            },
+            {
+                'option_strings': ('--align_ct',),
+                'help': 'Align barcode center',
+                'type': str_to_bool,
+            },
+            {
+                'option_strings': ('--function_type',),
+                'help': 'ESCPOS function type',
+                'choices': ['A', 'B'],
+            },
+        ],
+    },
+    {
+        'parser': {
+            'name': 'text',
+            'help': 'Print plain text',
+        },
+        'defaults': {
+            'func': 'text',
+        },
+        'arguments': [
+            {
+                'option_strings': ('--txt',),
+                'help': 'Plain text to print',
+                'required': True,
+            }
+        ],
+    },
+    {
+        'parser': {
+            'name': 'block_text',
+            'help': 'Print wrapped text',
+        },
+        'defaults': {
+            'func': 'block_text',
+        },
+        'arguments': [
+            {
+                'option_strings': ('--txt',),
+                'help': 'block_text to print',
+                'required': True,
+            },
+            {
+                'option_strings': ('--columns',),
+                'help': 'Number of columns',
+                'type': int,
+            },
+        ],
+    },
+    {
+        'parser': {
+            'name': 'cut',
+            'help': 'Cut the paper',
+        },
+        'defaults': {
+            'func': 'cut',
+        },
+        'arguments': [
+            {
+                'option_strings': ('--mode',),
+                'help': 'Type of cut',
+                'choices': ['FULL', 'PART'],
+            },
+        ],
+    },
+    {
+        'parser': {
+            'name': 'cashdraw',
+            'help': 'Kick the cash drawer',
+        },
+        'defaults': {
+            'func': 'cashdraw',
+        },
+        'arguments': [
+            {
+                'option_strings': ('--pin',),
+                'help': 'Which PIN to kick',
+                'choices': [2, 5],
+            },
+        ],
+    },
+    {
+        'parser': {
+            'name': 'image',
+            'help': 'Print an image',
+        },
+        'defaults': {
+            'func': 'image',
+        },
+        'arguments': [
+            {
+                'option_strings': ('--img_source',),
+                'help': 'Path to image',
+                'required': True,
+            },
+            {
+                'option_strings': ('--impl',),
+                'help': 'Implementation to use',
+                'choices': ['bitImageRaster', 'bitImageColumn', 'graphics'],
+            },
+            {
+                'option_strings': ('--high_density_horizontal',),
+                'help': 'Image density (horizontal)',
+                'type': str_to_bool,
+            },
+            {
+                'option_strings': ('--high_density_vertical',),
+                'help': 'Image density (vertical)',
+                'type': str_to_bool,
+            },
+
+        ],
+    },
+    {
+        'parser': {
+            'name': 'fullimage',
+            'help': 'Print a fullimage',
+        },
+        'defaults': {
+            'func': 'fullimage',
+        },
+        'arguments': [
+            {
+                'option_strings': ('--img',),
+                'help': 'Path to img',
+                'required': True,
+            },
+            {
+                'option_strings': ('--max_height',),
+                'help': 'Max height of image in px',
+                'type': int,
+            },
+            {
+                'option_strings': ('--width',),
+                'help': 'Max width of image in px',
+                'type': int,
+            },
+            {
+                'option_strings': ('--histeq',),
+                'help': 'Equalize the histrogram',
+                'type': str_to_bool,
+            },
+            {
+                'option_strings': ('--bandsize',),
+                'help': 'Size of bands to divide into when printing',
+                'type': int,
+            },
+        ],
+    },
+    {
+        'parser': {
+            'name': 'charcode',
+            'help': 'Set character code table',
+        },
+        'defaults': {
+            'func': 'charcode',
+        },
+        'arguments': [
+            {
+                'option_strings': ('--code',),
+                'help': 'Character code',
+                'required': True,
+            },
+        ],
+    },
+    {
+        'parser': {
+            'name': 'set',
+            'help': 'Set text properties',
+        },
+        'defaults': {
+            'func': 'set',
+        },
+        'arguments': [
+            {
+                'option_strings': ('--align',),
+                'help': 'Horizontal alignment',
+                'choices': ['left', 'center', 'right'],
+            },
+            {
+                'option_strings': ('--font',),
+                'help': 'Font choice',
+                'choices': ['left', 'center', 'right'],
+            },
+            {
+                'option_strings': ('--text_type',),
+                'help': 'Text properties',
+                'choices': ['B', 'U', 'U2', 'BU', 'BU2', 'NORMAL'],
+            },
+            {
+                'option_strings': ('--width',),
+                'help': 'Width multiplier',
+                'type': int,
+            },
+            {
+                'option_strings': ('--height',),
+                'help': 'Height multiplier',
+                'type': int,
+            },
+            {
+                'option_strings': ('--density',),
+                'help': 'Print density',
+                'type': int,
+            },
+            {
+                'option_strings': ('--invert',),
+                'help': 'White on black printing',
+                'type': str_to_bool,
+            },
+            {
+                'option_strings': ('--smooth',),
+                'help': 'Text smoothing. Effective on >:  4x4 text',
+                'type': str_to_bool,
+            },
+            {
+                'option_strings': ('--flip',),
+                'help': 'Text smoothing. Effective on >:  4x4 text',
+                'type': str_to_bool,
+            },
+        ],
+    },
+    {
+        'parser': {
+            'name': 'hw',
+            'help': 'Hardware operations',
+        },
+        'defaults': {
+            'func': 'hw',
+        },
+        'arguments': [
+            {
+                'option_strings': ('--hw',),
+                'help': 'Operation',
+                'choices': ['INIT', 'SELECT', 'RESET'],
+                'required': True,
+            },
+        ],
+    },
+    {
+        'parser': {
+            'name': 'control',
+            'help': 'Control sequences',
+        },
+        'defaults': {
+            'func': 'control',
+        },
+        'arguments': [
+            {
+                'option_strings': ('--ctl',),
+                'help': 'Control sequence',
+                'choices': ['LF', 'FF', 'CR', 'HT', 'VT'],
+                'required': True,
+            },
+            {
+                'option_strings': ('--pos',),
+                'help': 'Horizontal tab position (1-4)',
+                'type': int,
+            },
+        ],
+    },
+    {
+        'parser': {
+            'name': 'panel_buttons',
+            'help': 'Controls panel buttons',
+        },
+        'defaults': {
+            'func': 'panel_buttons',
+        },
+        'arguments': [
+            {
+                'option_strings': ('--enable',),
+                'help': 'Feed button enabled',
+                'type': str_to_bool,
+                'required': True,
+            },
+        ],
+    },
+    {
+        'parser': {
+            'name': 'raw',
+            'help': 'Raw data',
+        },
+        'defaults': {
+            'func': '_raw',
+        },
+        'arguments': [
+            {
+                'option_strings': ('--msg',),
+                'help': 'Raw data to send',
+                'required': True,
+            },
+        ],
+    },
+]
+
+
+def main():
+    """
+
+    Handles loading of configuration and creating and processing of command
+    line arguments. Called when run from a CLI.
+
+    """
+
+    parser = argparse.ArgumentParser(
+        description='CLI for python-escpos',
+        epilog='Printer configuration is defined in the python-escpos config'
+        'file. See documentation for details.',
+    )
+
+    parser.register('type', 'bool', str_to_bool)
+
+    # Allow config file location to be passed
+    parser.add_argument(
+        '-c', '--config',
+        help='Alternate path to the configuration file',
+    )
+
+    # Everything interesting runs off of a subparser so we can use the format
+    # cli [subparser] -args
+    command_subparsers = parser.add_subparsers(
+        title='ESCPOS Command',
+        dest='parser',
+    )
+    # fix inconsistencies in the behaviour of some versions of argparse
+    command_subparsers.required = False   # force 'required' testing
+
+    # Build the ESCPOS command arguments
+    for command in ESCPOS_COMMANDS:
+        parser_command = command_subparsers.add_parser(**command['parser'])
+        parser_command.set_defaults(**command['defaults'])
+        for argument in command['arguments']:
+            option_strings = argument.pop('option_strings')
+            parser_command.add_argument(*option_strings, **argument)
+
+    # Build any custom arguments
+    parser_command_demo = command_subparsers.add_parser('demo',
+                                                        help='Demonstrates various functions')
+    parser_command_demo.set_defaults(func='demo')
+    demo_group = parser_command_demo.add_mutually_exclusive_group()
+    demo_group.add_argument(
+        '--barcodes-a',
+        help='Print demo barcodes for function type A',
+        action='store_true',
+    )
+    demo_group.add_argument(
+        '--barcodes-b',
+        help='Print demo barcodes for function type B',
+        action='store_true',
+    )
+    demo_group.add_argument(
+        '--qr',
+        help='Print some demo QR codes',
+        action='store_true',
+    )
+    demo_group.add_argument(
+        '--text',
+        help='Print some demo text',
+        action='store_true',
+    )
+
+    parser_command_version = command_subparsers.add_parser('version',
+                                                           help='Print the version of python-escpos')
+    parser_command_version.set_defaults(version=True)
+
+    # hook in argcomplete
+    if 'argcomplete' in globals():
+        argcomplete.autocomplete(parser)
+
+    # Get only arguments actually passed
+    args_dict = vars(parser.parse_args())
+    if not args_dict:
+        parser.print_help()
+        sys.exit()
+    command_arguments = dict([k, v] for k, v in six.iteritems(args_dict) if v is not None)
+
+    # If version should be printed, do this, then exit
+    print_version = command_arguments.pop('version', None)
+    if print_version:
+        print(version.version)
+        sys.exit()
+
+    # If there was a config path passed, grab it
+    config_path = command_arguments.pop('config', None)
+
+    # Load the configuration and defined printer
+    saved_config = config.Config()
+    saved_config.load(config_path)
+    printer = saved_config.printer()
+
+    if not printer:
+        raise Exception('No printers loaded from config')
+
+    target_command = command_arguments.pop('func')
+
+    # remove helper-argument 'parser' from dict
+    command_arguments.pop('parser', None)
+
+    if hasattr(printer, target_command):
+        # print command with args
+        getattr(printer, target_command)(**command_arguments)
+        if target_command in REQUIRES_NEWLINE:
+            printer.text("\n")
+    else:
+        command_arguments['printer'] = printer
+        globals()[target_command](**command_arguments)
+
+
+def demo(printer, **kwargs):
+    """
+    Prints specificed demos. Called when CLI is passed `demo`. This function
+    uses the DEMO_FUNCTIONS dictionary.
+
+    :param printer: A printer from escpos.printer
+    :param kwargs: A dict with a key for each function you want to test. It's
+        in this format since it usually comes from argparse.
+    """
+    for demo_choice in kwargs.keys():
+        command = getattr(
+            printer,
+            demo_choice
+            .replace('barcodes_a', 'barcode')
+            .replace('barcodes_b', 'barcode')
+        )
+        for params in DEMO_FUNCTIONS[demo_choice]:
+            command(**params)
+        printer.cut()
+
+
+if __name__ == '__main__':
+    main()

src/escpos/codepages.py

@@ -0,0 +1,24 @@
+from .capabilities import CAPABILITIES
+
+
+class CodePageManager:
+    """Holds information about all the code pages (as defined
+    in escpos-printer-db).
+    """
+
+    def __init__(self, data):
+        self.data = data
+
+    def get_all(self):
+        return self.data.values()
+
+    @staticmethod
+    def get_encoding_name(encoding):
+        # TODO resolve the encoding alias
+        return encoding.upper()
+
+    def get_encoding(self, encoding):
+        return self.data[encoding]
+
+
+CodePages = CodePageManager(CAPABILITIES['encodings'])

src/escpos/config.py

@@ -0,0 +1,118 @@
+""" ESC/POS configuration manager.
+
+This module contains the implentations of abstract base class :py:class:`Config`.
+
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import os
+import appdirs
+import yaml
+
+from . import printer
+from . import exceptions
+
+
+class Config(object):
+    """  Configuration handler class.
+
+    This class loads configuration from a default or specificed directory. It
+    can create your defined printer and return it to you.
+    """
+    _app_name = 'python-escpos'
+    _config_file = 'config.yaml'
+
+    def __init__(self):
+        """ Initialize configuration.
+
+        Remember to add anything that needs to be reset between configurations
+        to self._reset_config
+        """
+        self._has_loaded = False
+        self._printer = None
+
+        self._printer_name = None
+        self._printer_config = None
+
+    def _reset_config(self):
+        """ Clear the loaded configuration.
+
+        If we are loading a changed config, we don't want to have leftover
+        data.
+        """
+        self._has_loaded = False
+        self._printer = None
+
+        self._printer_name = None
+        self._printer_config = None
+
+    def load(self, config_path=None):
+        """ Load and parse the configuration file using pyyaml
+
+        :param config_path: An optional file path, file handle, or byte string
+            for the configuration file.
+
+        """
+
+        self._reset_config()
+
+        if not config_path:
+            config_path = os.path.join(
+                appdirs.user_config_dir(self._app_name),
+                self._config_file
+            )
+
+        try:
+            # First check if it's file like. If it is, pyyaml can load it.
+            # I'm checking type instead of catching exceptions to keep the
+            # exception handling simple
+            if hasattr(config_path, 'read'):
+                config = yaml.safe_load(config_path)
+            else:
+                # If it isn't, it's a path. We have to open it first, otherwise
+                # pyyaml will try to read it as yaml
+                with open(config_path, 'rb') as config_file:
+                    config = yaml.safe_load(config_file)
+        except EnvironmentError:
+            raise exceptions.ConfigNotFoundError('Couldn\'t read config at {config_path}'.format(
+                config_path=str(config_path),
+            ))
+        except yaml.YAMLError:
+            raise exceptions.ConfigSyntaxError('Error parsing YAML')
+
+        if 'printer' in config:
+            self._printer_config = config['printer']
+            self._printer_name = self._printer_config.pop('type').title()
+
+            if not self._printer_name or not hasattr(printer, self._printer_name):
+                raise exceptions.ConfigSyntaxError(
+                    'Printer type "{printer_name}" is invalid'.format(
+                        printer_name=self._printer_name,
+                    )
+                )
+
+        self._has_loaded = True
+
+    def printer(self):
+        """ Returns a printer that was defined in the config, or throws an
+        exception.
+
+        This method loads the default config if one hasn't beeen already loaded.
+
+        """
+        if not self._has_loaded:
+            self.load()
+
+        if not self._printer_name:
+            raise exceptions.ConfigSectionMissingError('printer')
+
+        if not self._printer:
+            # We could catch init errors and make them a ConfigSyntaxError,
+            # but I'll just let them pass
+            self._printer = getattr(printer, self._printer_name)(**self._printer_config)
+
+        return self._printer

src/escpos/constants.py

@@ -0,0 +1,218 @@
+#  -*- coding: utf-8 -*-
+""" Set of ESC/POS Commands (Constants)
+
+This module contains constants that are described in the esc/pos-documentation.
+Since there is no definitive and unified specification for all esc/pos-like printers the constants could later be
+moved to `capabilities` as in `escpos-php by @mike42 <https://github.com/mike42/escpos-php>`_.
+
+:author: `Manuel F Martinez <manpaz@bashlinux.com>`_ and others
+:organization: Bashlinux and `python-escpos <https://github.com/python-escpos>`_
+:copyright: Copyright (c) 2012-2017 Bashlinux and python-escpos
+:license: MIT
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import six
+
+# Control characters
+# as labelled in http://www.novopos.ch/client/EPSON/TM-T20/TM-T20_eng_qr.pdf
+NUL = b'\x00'
+EOT = b'\x04'
+ENQ = b'\x05'
+DLE = b'\x10'
+DC4 = b'\x14'
+CAN = b'\x18'
+ESC = b'\x1b'
+FS  = b'\x1c'
+GS  = b'\x1d'
+
+# Feed control sequences
+CTL_LF = b'\n'              # Print and line feed
+CTL_FF = b'\f'              # Form feed
+CTL_CR = b'\r'              # Carriage return
+CTL_HT = b'\t'              # Horizontal tab
+CTL_SET_HT = ESC + b'\x44'  # Set horizontal tab positions
+CTL_VT = b'\v'              # Vertical tab
+
+# Printer hardware
+HW_INIT   = ESC + b'@'             # Clear data in buffer and reset modes
+HW_SELECT = ESC + b'=\x01'         # Printer select
+
+HW_RESET  = ESC + b'\x3f\x0a\x00'   # Reset printer hardware
+                                    # (TODO: Where is this specified?)
+
+# Cash Drawer (ESC p <pin> <on time: 2*ms> <off time: 2*ms>)
+_CASH_DRAWER = lambda m, t1='', t2='': ESC + b'p' + m + six.int2byte(t1) + six.int2byte(t2)
+CD_KICK_DEC_SEQUENCE = lambda esc, p, m, t1=50, t2=50: six.int2byte(esc) + six.int2byte(p) + six.int2byte(m) + six.int2byte(t1) + six.int2byte(t2)
+CD_KICK_2 = _CASH_DRAWER(b'\x00', 50, 50)  # Sends a pulse to pin 2 []
+CD_KICK_5 = _CASH_DRAWER(b'\x01', 50, 50)  # Sends a pulse to pin 5 []
+
+# Paper Cutter
+_CUT_PAPER = lambda m: GS + b'V' + m
+PAPER_FULL_CUT = _CUT_PAPER(b'\x00')  # Full cut paper
+PAPER_PART_CUT = _CUT_PAPER(b'\x01')  # Partial cut paper
+
+# Beep
+BEEP = b'\x07'
+
+# Panel buttons (e.g. the FEED button)
+_PANEL_BUTTON = lambda n: ESC + b'c5' + six.int2byte(n)
+PANEL_BUTTON_ON = _PANEL_BUTTON(0)  # enable all panel buttons
+PANEL_BUTTON_OFF = _PANEL_BUTTON(1)  # disable all panel buttons
+
+# Sheet modes
+SHEET_SLIP_MODE = ESC + b'\x63\x30\x04'  # slip paper
+SHEET_ROLL_MODE = ESC + b'\x63\x30\x01'  # paper roll
+
+# Text format
+# TODO: Acquire the "ESC/POS Application Programming Guide for Paper Roll
+#       Printers" and tidy up this stuff too.
+TXT_FLIP_ON    = ESC + b'\x7b\x01'
+TXT_FLIP_OFF   = ESC + b'\x7b\x00'
+TXT_SMOOTH_ON  = GS + b'\x62\x01'
+TXT_SMOOTH_OFF = GS + b'\x62\x00'
+TXT_SIZE       = GS + b'!'
+TXT_WIDTH      = {1: 0x00,
+                  2: 0x10,
+                  3: 0x20,
+                  4: 0x30,
+                  5: 0x40,
+                  6: 0x50,
+                  7: 0x60,
+                  8: 0x70}
+TXT_HEIGHT     = {1: 0x00,
+                  2: 0x01,
+                  3: 0x02,
+                  4: 0x03,
+                  5: 0x04,
+                  6: 0x05,
+                  7: 0x06,
+                  8: 0x07}
+TXT_NORMAL     = ESC + b'!\x00'     # Normal text
+TXT_2HEIGHT    = ESC + b'!\x10'     # Double height text
+TXT_2WIDTH     = ESC + b'!\x20'     # Double width text
+TXT_4SQUARE    = ESC + b'!\x30'     # Quad area text
+TXT_UNDERL_OFF = ESC + b'\x2d\x00'  # Underline font OFF
+TXT_UNDERL_ON  = ESC + b'\x2d\x01'  # Underline font 1-dot ON
+TXT_UNDERL2_ON = ESC + b'\x2d\x02'  # Underline font 2-dot ON
+TXT_BOLD_OFF   = ESC + b'\x45\x00'  # Bold font OFF
+TXT_BOLD_ON    = ESC + b'\x45\x01'  # Bold font ON
+TXT_ALIGN_LT   = ESC + b'\x61\x00'  # Left justification
+TXT_ALIGN_CT   = ESC + b'\x61\x01'  # Centering
+TXT_ALIGN_RT   = ESC + b'\x61\x02'  # Right justification
+TXT_INVERT_ON  = GS  + b'\x42\x01'  # Inverse Printing ON
+TXT_INVERT_OFF = GS  + b'\x42\x00'  # Inverse Printing OFF
+
+# Fonts
+SET_FONT = lambda n: ESC + b'\x4d' + n
+TXT_FONT_A     = SET_FONT(b'\x00')  # Font type A
+TXT_FONT_B     = SET_FONT(b'\x01')  # Font type B
+
+# Text colors
+TXT_COLOR_BLACK = ESC + b'\x72\x00'  # Default Color
+TXT_COLOR_RED = ESC + b'\x72\x01'    # Alternative Color (Usually Red)
+
+# Spacing
+LINESPACING_RESET = ESC + b'2'
+LINESPACING_FUNCS = {
+  60: ESC + b'A',  # line_spacing/60 of an inch, 0 <= line_spacing <= 85
+  360: ESC + b'+', # line_spacing/360 of an inch, 0 <= line_spacing <= 255
+  180: ESC + b'3', # line_spacing/180 of an inch, 0 <= line_spacing <= 255
+}
+
+# Prefix to change the codepage. You need to attach a byte to indicate
+# the codepage to use. We use escpos-printer-db as the data source.
+CODEPAGE_CHANGE = ESC + b'\x74'
+
+# Barcode format
+_SET_BARCODE_TXT_POS = lambda n: GS + b'H' + n
+BARCODE_TXT_OFF = _SET_BARCODE_TXT_POS(b'\x00')  # HRI barcode chars OFF
+BARCODE_TXT_ABV = _SET_BARCODE_TXT_POS(b'\x01')  # HRI barcode chars above
+BARCODE_TXT_BLW = _SET_BARCODE_TXT_POS(b'\x02')  # HRI barcode chars below
+BARCODE_TXT_BTH = _SET_BARCODE_TXT_POS(b'\x03')  # HRI both above and below
+
+_SET_HRI_FONT = lambda n: GS + b'f' + n
+BARCODE_FONT_A = _SET_HRI_FONT(b'\x00')  # Font type A for HRI barcode chars
+BARCODE_FONT_B = _SET_HRI_FONT(b'\x01')  # Font type B for HRI barcode chars
+
+BARCODE_HEIGHT = GS + b'h'  # Barcode Height [1-255]
+BARCODE_WIDTH  = GS + b'w'  # Barcode Width  [2-6]
+
+# NOTE: This isn't actually an ESC/POS command. It's the common prefix to the
+#      two "print bar code" commands:
+#      -  Type A: "GS k <type as integer> <data> NUL"
+#      -  TYPE B: "GS k <type as letter> <data length> <data>"
+#      The latter command supports more barcode types
+_SET_BARCODE_TYPE = lambda m: GS + b'k' + six.int2byte(m)
+
+# Barcodes for printing function type A
+BARCODE_TYPE_A = {
+    'UPC-A':   _SET_BARCODE_TYPE(0),
+    'UPC-E':   _SET_BARCODE_TYPE(1),
+    'EAN13':   _SET_BARCODE_TYPE(2),
+    'EAN8':    _SET_BARCODE_TYPE(3),
+    'CODE39':  _SET_BARCODE_TYPE(4),
+    'ITF':     _SET_BARCODE_TYPE(5),
+    'NW7':     _SET_BARCODE_TYPE(6),
+    'CODABAR': _SET_BARCODE_TYPE(6),  # Same as NW7
+}
+
+# Barcodes for printing function type B
+# The first 8 are the same barcodes as type A
+BARCODE_TYPE_B = {
+    'UPC-A':                       _SET_BARCODE_TYPE(65),
+    'UPC-E':                       _SET_BARCODE_TYPE(66),
+    'EAN13':                       _SET_BARCODE_TYPE(67),
+    'EAN8':                        _SET_BARCODE_TYPE(68),
+    'CODE39':                      _SET_BARCODE_TYPE(69),
+    'ITF':                         _SET_BARCODE_TYPE(70),
+    'NW7':                         _SET_BARCODE_TYPE(71),
+    'CODABAR':                     _SET_BARCODE_TYPE(71),  # Same as NW7
+    'CODE93':                      _SET_BARCODE_TYPE(72),
+    'CODE128':                     _SET_BARCODE_TYPE(73),
+    'GS1-128':                     _SET_BARCODE_TYPE(74),
+    'GS1 DATABAR OMNIDIRECTIONAL': _SET_BARCODE_TYPE(75),
+    'GS1 DATABAR TRUNCATED':       _SET_BARCODE_TYPE(76),
+    'GS1 DATABAR LIMITED':         _SET_BARCODE_TYPE(77),
+    'GS1 DATABAR EXPANDED':        _SET_BARCODE_TYPE(78),
+}
+
+BARCODE_TYPES = {
+    'A': BARCODE_TYPE_A,
+    'B': BARCODE_TYPE_B,
+}
+
+# QRCode error correction levels
+QR_ECLEVEL_L = 0
+QR_ECLEVEL_M = 1
+QR_ECLEVEL_Q = 2
+QR_ECLEVEL_H = 3
+
+# QRcode models
+QR_MODEL_1 = 1
+QR_MODEL_2 = 2
+QR_MICRO = 3
+
+# Image format
+# NOTE: _PRINT_RASTER_IMG is the obsolete ESC/POS "print raster bit image"
+#       command. The constants include a fragment of the data's header.
+_PRINT_RASTER_IMG = lambda data: GS + b'v0' + data
+S_RASTER_N  = _PRINT_RASTER_IMG(b'\x00')  # Set raster image normal size
+S_RASTER_2W = _PRINT_RASTER_IMG(b'\x01')  # Set raster image double width
+S_RASTER_2H = _PRINT_RASTER_IMG(b'\x02')  # Set raster image double height
+S_RASTER_Q  = _PRINT_RASTER_IMG(b'\x03')  # Set raster image quadruple
+
+# Printing Density
+PD_N50 = GS + b'\x7c\x00'  # Printing Density -50%
+PD_N37 = GS + b'\x7c\x01'  # Printing Density -37.5%
+PD_N25 = GS + b'\x7c\x02'  # Printing Density -25%
+PD_N12 = GS + b'\x7c\x03'  # Printing Density -12.5%
+PD_0   = GS + b'\x7c\x04'  # Printing Density  0%
+PD_P50 = GS + b'\x7c\x08'  # Printing Density +50%
+PD_P37 = GS + b'\x7c\x07'  # Printing Density +37.5%
+PD_P25 = GS + b'\x7c\x06'  # Printing Density +25%
+PD_P12 = GS + b'\x7c\x05'  # Printing Density +12.5%

src/escpos/escpos.py

@@ -0,0 +1,786 @@
+#!/usr/bin/python
+#  -*- coding: utf-8 -*-
+""" Main class
+
+This module contains the abstract base class :py:class:`Escpos`.
+
+:author: `Manuel F Martinez <manpaz@bashlinux.com>`_ and others
+:organization: Bashlinux and `python-escpos <https://github.com/python-escpos>`_
+:copyright: Copyright (c) 2012-2017 Bashlinux and python-escpos
+:license: MIT
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import qrcode
+import textwrap
+import six
+
+from .constants import ESC, GS, NUL, QR_ECLEVEL_L, QR_ECLEVEL_M, QR_ECLEVEL_H, QR_ECLEVEL_Q
+from .constants import QR_MODEL_1, QR_MODEL_2, QR_MICRO, BARCODE_TYPES, BARCODE_HEIGHT, BARCODE_WIDTH
+from .constants import TXT_ALIGN_CT, TXT_ALIGN_LT, TXT_ALIGN_RT, BARCODE_FONT_A, BARCODE_FONT_B
+from .constants import BARCODE_TXT_OFF, BARCODE_TXT_BTH, BARCODE_TXT_ABV, BARCODE_TXT_BLW
+from .constants import TXT_HEIGHT, TXT_WIDTH, TXT_SIZE, TXT_NORMAL, TXT_SMOOTH_OFF, TXT_SMOOTH_ON
+from .constants import TXT_FLIP_OFF, TXT_FLIP_ON, TXT_2WIDTH, TXT_2HEIGHT, TXT_4SQUARE
+from .constants import TXT_UNDERL_OFF, TXT_UNDERL_ON, TXT_BOLD_OFF, TXT_BOLD_ON, SET_FONT, TXT_UNDERL2_ON
+from .constants import TXT_INVERT_OFF, TXT_INVERT_ON, LINESPACING_FUNCS, LINESPACING_RESET
+from .constants import PD_0, PD_N12, PD_N25, PD_N37, PD_N50, PD_P50, PD_P37, PD_P25, PD_P12
+from .constants import CD_KICK_DEC_SEQUENCE, CD_KICK_5, CD_KICK_2, PAPER_FULL_CUT, PAPER_PART_CUT
+from .constants import HW_RESET, HW_SELECT, HW_INIT
+from .constants import CTL_VT, CTL_HT, CTL_CR, CTL_FF, CTL_LF, CTL_SET_HT, PANEL_BUTTON_OFF, PANEL_BUTTON_ON
+
+from .exceptions import BarcodeTypeError, BarcodeSizeError, TabPosError
+from .exceptions import CashDrawerError, SetVariableError, BarcodeCodeError
+
+from .magicencode import MagicEncode
+
+from abc import ABCMeta, abstractmethod  # abstract base class support
+from escpos.image import EscposImage
+from escpos.capabilities import get_profile, BARCODE_B
+
+
+@six.add_metaclass(ABCMeta)
+class Escpos(object):
+    """ ESC/POS Printer object
+
+    This class is the abstract base class for an esc/pos-printer. The printer implementations are children of this
+    class.
+    """
+    device = None
+
+    def __init__(self, profile=None, magic_encode_args=None, **kwargs):
+        """ Initialize ESCPOS Printer
+
+        :param profile: Printer profile"""
+        self.profile = get_profile(profile)
+        self.magic = MagicEncode(self, **(magic_encode_args or {}))
+
+    def __del__(self):
+        """ call self.close upon deletion """
+        self.close()
+
+    @abstractmethod
+    def _raw(self, msg):
+        """ Sends raw data to the printer
+
+        This function has to be individually implemented by the implementations.
+
+        :param msg: message string to be sent to the printer
+        :type msg: bytes
+        """
+        pass
+
+    def image(self, img_source, high_density_vertical=True, high_density_horizontal=True, impl="bitImageRaster",
+              fragment_height=960):
+        """ Print an image
+
+        You can select whether the printer should print in high density or not. The default value is high density.
+        When printing in low density, the image will be stretched.
+
+        Esc/Pos supplies several commands for printing. This function supports three of them. Please try to vary the
+        implementations if you have any problems. For example the printer `IT80-002` will have trouble aligning
+        images that are not printed in Column-mode.
+
+        The available printing implementations are:
+
+            * `bitImageRaster`: prints with the `GS v 0`-command
+            * `graphics`: prints with the `GS ( L`-command
+            * `bitImageColumn`: prints with the `ESC *`-command
+
+        :param img_source: PIL image or filename to load: `jpg`, `gif`, `png` or `bmp`
+        :param high_density_vertical: print in high density in vertical direction *default:* True
+        :param high_density_horizontal: print in high density in horizontal direction *default:* True
+        :param impl: choose image printing mode between `bitImageRaster`, `graphics` or `bitImageColumn`
+        :param fragment_height: Images larger than this will be split into multiple fragments *default:* 960
+
+        """
+        im = EscposImage(img_source)
+
+        if im.height > fragment_height:
+            fragments = im.split(fragment_height)
+            for fragment in fragments:
+                self.image(fragment,
+                           high_density_vertical=high_density_vertical,
+                           high_density_horizontal=high_density_horizontal,
+                           impl=impl,
+                           fragment_height=fragment_height)
+            return
+
+        if impl == "bitImageRaster":
+            # GS v 0, raster format bit image
+            density_byte = (0 if high_density_horizontal else 1) + (0 if high_density_vertical else 2)
+            header = GS + b"v0" + six.int2byte(density_byte) + self._int_low_high(im.width_bytes, 2) +\
+                self._int_low_high(im.height, 2)
+            self._raw(header + im.to_raster_format())
+
+        if impl == "graphics":
+            # GS ( L raster format graphics
+            img_header = self._int_low_high(im.width, 2) + self._int_low_high(im.height, 2)
+            tone = b'0'
+            colors = b'1'
+            ym = six.int2byte(1 if high_density_vertical else 2)
+            xm = six.int2byte(1 if high_density_horizontal else 2)
+            header = tone + xm + ym + colors + img_header
+            raster_data = im.to_raster_format()
+            self._image_send_graphics_data(b'0', b'p', header + raster_data)
+            self._image_send_graphics_data(b'0', b'2', b'')
+
+        if impl == "bitImageColumn":
+            # ESC *, column format bit image
+            density_byte = (1 if high_density_horizontal else 0) + (32 if high_density_vertical else 0)
+            header = ESC + b"*" + six.int2byte(density_byte) + self._int_low_high(im.width, 2)
+            outp = [ESC + b"3" + six.int2byte(16)]  # Adjust line-feed size
+            for blob in im.to_column_format(high_density_vertical):
+                outp.append(header + blob + b"\n")
+            outp.append(ESC + b"2")  # Reset line-feed size
+            self._raw(b''.join(outp))
+
+    def _image_send_graphics_data(self, m, fn, data):
+        """
+        Wrapper for GS ( L, to calculate and send correct data length.
+
+        :param m: Modifier//variant for function. Usually '0'
+        :param fn: Function number to use, as byte
+        :param data: Data to send
+        """
+        header = self._int_low_high(len(data) + 2, 2)
+        self._raw(GS + b'(L' + header + m + fn + data)
+
+    def qr(self, content, ec=QR_ECLEVEL_L, size=3, model=QR_MODEL_2, native=False):
+        """ Print QR Code for the provided string
+
+        :param content: The content of the code. Numeric data will be more efficiently compacted.
+        :param ec: Error-correction level to use. One of QR_ECLEVEL_L (default), QR_ECLEVEL_M, QR_ECLEVEL_Q or
+            QR_ECLEVEL_H.
+            Higher error correction results in a less compact code.
+        :param size: Pixel size to use. Must be 1-16 (default 3)
+        :param model: QR code model to use. Must be one of QR_MODEL_1, QR_MODEL_2 (default) or QR_MICRO (not supported
+            by all printers).
+        :param native: True to render the code on the printer, False to render the code as an image and send it to the
+            printer (Default)
+        """
+        # Basic validation
+        if ec not in [QR_ECLEVEL_L, QR_ECLEVEL_M, QR_ECLEVEL_H, QR_ECLEVEL_Q]:
+            raise ValueError("Invalid error correction level")
+        if not 1 <= size <= 16:
+            raise ValueError("Invalid block size (must be 1-16)")
+        if model not in [QR_MODEL_1, QR_MODEL_2, QR_MICRO]:
+            raise ValueError("Invalid QR model (must be one of QR_MODEL_1, QR_MODEL_2, QR_MICRO)")
+        if content == "":
+            # Handle edge case by printing nothing.
+            return
+        if not native:
+            # Map ESC/POS error correction levels to python 'qrcode' library constant and render to an image
+            if model != QR_MODEL_2:
+                raise ValueError("Invalid QR model for qrlib rendering (must be QR_MODEL_2)")
+            python_qr_ec = {
+                QR_ECLEVEL_H: qrcode.constants.ERROR_CORRECT_H,
+                QR_ECLEVEL_L: qrcode.constants.ERROR_CORRECT_L,
+                QR_ECLEVEL_M: qrcode.constants.ERROR_CORRECT_M,
+                QR_ECLEVEL_Q: qrcode.constants.ERROR_CORRECT_Q
+            }
+            qr_code = qrcode.QRCode(version=None, box_size=size, border=1, error_correction=python_qr_ec[ec])
+            qr_code.add_data(content)
+            qr_code.make(fit=True)
+            qr_img = qr_code.make_image()
+            im = qr_img._img.convert("RGB")
+            # Convert the RGB image in printable image
+            self.image(im)
+            return
+        # Native 2D code printing
+        cn = b'1'  # Code type for QR code
+        # Select model: 1, 2 or micro.
+        self._send_2d_code_data(six.int2byte(65), cn, six.int2byte(48 + model) + six.int2byte(0))
+        # Set dot size.
+        self._send_2d_code_data(six.int2byte(67), cn, six.int2byte(size))
+        # Set error correction level: L, M, Q, or H
+        self._send_2d_code_data(six.int2byte(69), cn, six.int2byte(48 + ec))
+        # Send content & print
+        self._send_2d_code_data(six.int2byte(80), cn, content.encode('utf-8'), b'0')
+        self._send_2d_code_data(six.int2byte(81), cn, b'', b'0')
+
+    def _send_2d_code_data(self, fn, cn, data, m=b''):
+        """ Wrapper for GS ( k, to calculate and send correct data length.
+
+        :param fn: Function to use.
+        :param cn: Output code type. Affects available data.
+        :param data: Data to send.
+        :param m: Modifier/variant for function. Often '0' where used.
+        """
+        if len(m) > 1 or len(cn) != 1 or len(fn) != 1:
+            raise ValueError("cn and fn must be one byte each.")
+        header = self._int_low_high(len(data) + len(m) + 2, 2)
+        self._raw(GS + b'(k' + header + cn + fn + m + data)
+
+    @staticmethod
+    def _int_low_high(inp_number, out_bytes):
+        """ Generate multiple bytes for a number: In lower and higher parts, or more parts as needed.
+
+        :param inp_number: Input number
+        :param out_bytes: The number of bytes to output (1 - 4).
+        """
+        max_input = (256 << (out_bytes * 8) - 1)
+        if not 1 <= out_bytes <= 4:
+            raise ValueError("Can only output 1-4 byes")
+        if not 0 <= inp_number <= max_input:
+            raise ValueError("Number too large. Can only output up to {0} in {1} byes".format(max_input, out_bytes))
+        outp = b''
+        for _ in range(0, out_bytes):
+            outp += six.int2byte(inp_number % 256)
+            inp_number //= 256
+        return outp
+
+    def charcode(self, code="AUTO"):
+        """ Set Character Code Table
+
+        Sets the control sequence from ``CHARCODE`` in :py:mod:`escpos.constants` as active. It will be sent with
+        the next text sequence. If you set the variable code to ``AUTO`` it will try to automatically guess the
+        right codepage. (This is the standard behaviour.)
+
+        :param code: Name of CharCode
+        :raises: :py:exc:`~escpos.exceptions.CharCodeError`
+        """
+        if code.upper() == "AUTO":
+            self.magic.force_encoding(False)
+        else:
+            self.magic.force_encoding(code)
+
+    def barcode(self, code, bc, height=64, width=3, pos="BELOW", font="A",
+                align_ct=True, function_type=None):
+        """ Print Barcode
+
+        This method allows to print barcodes. The rendering of the barcode is done by the printer and therefore has to
+        be supported by the unit. Currently you have to check manually whether your barcode text is correct. Uncorrect
+        barcodes may lead to unexpected printer behaviour. There are two forms of the barcode function. Type A is
+        default but has fewer barcodes, while type B has some more to choose from.
+
+        .. todo:: Add a method to check barcode codes. Alternatively or as an addition write explanations about each
+                  barcode-type. Research whether the check digits can be computed autmatically.
+
+        Use the parameters `height` and `width` for adjusting of the barcode size. Please take notice that the barcode
+        will not be printed if it is outside of the printable area. (Which should be impossible with this method, so
+        this information is probably more useful for debugging purposes.)
+
+        .. todo:: On TM-T88II width from 1 to 6 is accepted. Try to acquire command reference and correct the code.
+        .. todo:: Supplying pos does not have an effect for every barcode type. Check and document for which types this
+                  is true.
+
+        If you do not want to center the barcode you can call the method with `align_ct=False`, which will disable
+        automatic centering. Please note that when you use center alignment, then the alignment of text will be changed
+        automatically to centered. You have to manually restore the alignment if necessary.
+
+        .. todo:: If further barcode-types are needed they could be rendered transparently as an image. (This could also
+                  be of help if the printer does not support types that others do.)
+
+        :param code: alphanumeric data to be printed as bar code
+        :param bc: barcode format, possible values are for type A are:
+
+            * UPC-A
+            * UPC-E
+            * EAN13
+            * EAN8
+            * CODE39
+            * ITF
+            * NW7
+
+            Possible values for type B:
+
+            * All types from function type A
+            * CODE93
+            * CODE128
+            * GS1-128
+            * GS1 DataBar Omnidirectional
+            * GS1 DataBar Truncated
+            * GS1 DataBar Limited
+            * GS1 DataBar Expanded
+
+            If none is specified, the method raises :py:exc:`~escpos.exceptions.BarcodeTypeError`.
+        :param height: barcode height, has to be between 1 and 255
+            *default*: 64
+        :type height: int
+        :param width: barcode width, has to be between 2 and 6
+            *default*: 3
+        :type width: int
+        :param pos: where to place the text relative to the barcode, *default*: BELOW
+
+            * ABOVE
+            * BELOW
+            * BOTH
+            * OFF
+
+        :param font: select font (see ESC/POS-documentation, the device often has two fonts), *default*: A
+
+            * A
+            * B
+
+        :param align_ct: If this parameter is True the barcode will be centered. Otherwise no alignment command will be
+                         issued.
+        :type align_ct: bool
+
+        :param function_type: Choose between ESCPOS function type A or B,
+            depending on printer support and desired barcode. If not given,
+            the printer will attempt to automatically choose the correct
+            function based on the current profile.
+            *default*: A
+
+        :raises: :py:exc:`~escpos.exceptions.BarcodeSizeError`,
+                 :py:exc:`~escpos.exceptions.BarcodeTypeError`,
+                 :py:exc:`~escpos.exceptions.BarcodeCodeError`
+        """
+        if function_type is None:
+            # Choose the function type automatically.
+            if bc in BARCODE_TYPES['A']:
+                function_type = 'A'
+            else:
+                if bc in BARCODE_TYPES['B']:
+                    if not self.profile.supports(BARCODE_B):
+                        raise BarcodeTypeError((
+                            "Barcode type '{bc} not supported for "
+                            "the current printer profile").format(bc=bc))
+                    function_type = 'B'
+                else:
+                    raise BarcodeTypeError((
+                        "Barcode type '{bc} is not valid").format(bc=bc))
+
+        bc_types = BARCODE_TYPES[function_type.upper()]
+        if bc.upper() not in bc_types.keys():
+            raise BarcodeTypeError((
+                "Barcode type '{bc}' not valid for barcode function type "
+                "{function_type}").format(
+                    bc=bc,
+                    function_type=function_type,
+                ))
+
+        # Align Bar Code()
+        if align_ct:
+            self._raw(TXT_ALIGN_CT)
+        # Height
+        if 1 <= height <= 255:
+            self._raw(BARCODE_HEIGHT + six.int2byte(height))
+        else:
+            raise BarcodeSizeError("height = {height}".format(height=height))
+        # Width
+        if 2 <= width <= 6:
+            self._raw(BARCODE_WIDTH + six.int2byte(width))
+        else:
+            raise BarcodeSizeError("width = {width}".format(width=width))
+        # Font
+        if font.upper() == "B":
+            self._raw(BARCODE_FONT_B)
+        else:  # DEFAULT FONT: A
+            self._raw(BARCODE_FONT_A)
+        # Position
+        if pos.upper() == "OFF":
+            self._raw(BARCODE_TXT_OFF)
+        elif pos.upper() == "BOTH":
+            self._raw(BARCODE_TXT_BTH)
+        elif pos.upper() == "ABOVE":
+            self._raw(BARCODE_TXT_ABV)
+        else:  # DEFAULT POSITION: BELOW
+            self._raw(BARCODE_TXT_BLW)
+
+        self._raw(bc_types[bc.upper()])
+
+        if function_type.upper() == "B":
+            self._raw(six.int2byte(len(code)))
+
+        # Print Code
+        if code:
+            self._raw(code.encode())
+        else:
+            raise BarcodeCodeError()
+
+        if function_type.upper() == "A":
+            self._raw(NUL)
+
+    def text(self, txt):
+        """ Print alpha-numeric text
+
+        The text has to be encoded in the currently selected codepage.
+        The input text has to be encoded in unicode.
+
+        :param txt: text to be printed
+        :raises: :py:exc:`~escpos.exceptions.TextError`
+        """
+        txt = six.text_type(txt)
+        self.magic.write(txt)
+
+    def block_text(self, txt, font=None, columns=None):
+        """ Text is printed wrapped to specified columns
+
+        Text has to be encoded in unicode.
+
+        :param txt: text to be printed
+        :param font: font to be used, can be :code:`a` or :code`b`
+        :param columns: amount of columns
+        :return: None
+        """
+        col_count = self.profile.get_columns(font) if columns is None else columns
+        self.text(textwrap.fill(txt, col_count))
+
+    def set(self, align='left', font='a', text_type='normal', width=1,
+            height=1, density=9, invert=False, smooth=False, flip=False):
+        """ Set text properties by sending them to the printer
+
+        :param align: horizontal position for text, possible values are:
+
+            * CENTER
+            * LEFT
+            * RIGHT
+
+            *default*: LEFT
+
+        :param font: font given as an index, a name, or one of the
+            special values 'a' or 'b', refering to fonts 0 and 1.
+        :param text_type: text type, possible values are:
+
+            * B for bold
+            * U for underlined
+            * U2 for underlined, version 2
+            * BU for bold and underlined
+            * BU2 for bold and underlined, version 2
+            * NORMAL for normal text
+
+            *default*: NORMAL
+        :param width: text width multiplier, decimal range 1-8,  *default*: 1
+        :param height: text height multiplier, decimal range 1-8, *default*: 1
+        :param density: print density, value from 0-8, if something else is supplied the density remains unchanged
+        :param invert: True enables white on black printing, *default*: False
+        :param smooth: True enables text smoothing. Effective on 4x4 size text and larger, *default*: False
+        :param flip: True enables upside-down printing, *default*: False
+        :type invert: bool
+        """
+        # Width
+        if height == 2 and width == 2:
+            self._raw(TXT_NORMAL)
+            self._raw(TXT_4SQUARE)
+        elif height == 2 and width == 1:
+            self._raw(TXT_NORMAL)
+            self._raw(TXT_2HEIGHT)
+        elif width == 2 and height == 1:
+            self._raw(TXT_NORMAL)
+            self._raw(TXT_2WIDTH)
+        elif width == 1 and height == 1:
+            self._raw(TXT_NORMAL)
+        elif 1 <= width <= 8 and 1 <= height <= 8 and isinstance(width, int) and isinstance(height, int):
+            self._raw(TXT_SIZE + six.int2byte(TXT_WIDTH[width] + TXT_HEIGHT[height]))
+        else:
+            raise SetVariableError()
+        # Upside down
+        if flip:
+            self._raw(TXT_FLIP_ON)
+        else:
+            self._raw(TXT_FLIP_OFF)
+        # Smoothing
+        if smooth:
+            self._raw(TXT_SMOOTH_ON)
+        else:
+            self._raw(TXT_SMOOTH_OFF)
+        # Type
+        if text_type.upper() == "B":
+            self._raw(TXT_BOLD_ON)
+            self._raw(TXT_UNDERL_OFF)
+        elif text_type.upper() == "U":
+            self._raw(TXT_BOLD_OFF)
+            self._raw(TXT_UNDERL_ON)
+        elif text_type.upper() == "U2":
+            self._raw(TXT_BOLD_OFF)
+            self._raw(TXT_UNDERL2_ON)
+        elif text_type.upper() == "BU":
+            self._raw(TXT_BOLD_ON)
+            self._raw(TXT_UNDERL_ON)
+        elif text_type.upper() == "BU2":
+            self._raw(TXT_BOLD_ON)
+            self._raw(TXT_UNDERL2_ON)
+        elif text_type.upper() == "NORMAL":
+            self._raw(TXT_BOLD_OFF)
+            self._raw(TXT_UNDERL_OFF)
+        # Font
+        self._raw(SET_FONT(six.int2byte(self.profile.get_font(font))))
+
+        # Align
+        if align.upper() == "CENTER":
+            self._raw(TXT_ALIGN_CT)
+        elif align.upper() == "RIGHT":
+            self._raw(TXT_ALIGN_RT)
+        elif align.upper() == "LEFT":
+            self._raw(TXT_ALIGN_LT)
+        # Density
+        if density == 0:
+            self._raw(PD_N50)
+        elif density == 1:
+            self._raw(PD_N37)
+        elif density == 2:
+            self._raw(PD_N25)
+        elif density == 3:
+            self._raw(PD_N12)
+        elif density == 4:
+            self._raw(PD_0)
+        elif density == 5:
+            self._raw(PD_P12)
+        elif density == 6:
+            self._raw(PD_P25)
+        elif density == 7:
+            self._raw(PD_P37)
+        elif density == 8:
+            self._raw(PD_P50)
+        else:  # DEFAULT: DOES NOTHING
+            pass
+        # Invert Printing
+        if invert:
+            self._raw(TXT_INVERT_ON)
+        else:
+            self._raw(TXT_INVERT_OFF)
+
+    def line_spacing(self, spacing=None, divisor=180):
+        """ Set line character spacing.
+
+        If no spacing is given, we reset it to the default.
+
+        There are different commands for setting the line spacing, using
+        a different denominator:
+
+        '+'' line_spacing/360 of an inch, 0 <= line_spacing <= 255
+        '3' line_spacing/180 of an inch, 0 <= line_spacing <= 255
+        'A' line_spacing/60 of an inch, 0 <= line_spacing <= 85
+
+        Some printers may not support all of them. The most commonly
+        available command (using a divisor of 180) is chosen.
+        """
+        if spacing is None:
+            self._raw(LINESPACING_RESET)
+            return
+
+        if divisor not in LINESPACING_FUNCS:
+            raise ValueError("divisor must be either 360, 180 or 60")
+        if (divisor in [360, 180]
+                and (not(0 <= spacing <= 255))):
+            raise ValueError("spacing must be a int between 0 and 255 when divisor is 360 or 180")
+        if divisor == 60 and (not(0 <= spacing <= 85)):
+            raise ValueError("spacing must be a int between 0 and 85 when divisor is 60")
+
+        self._raw(LINESPACING_FUNCS[divisor] + six.int2byte(spacing))
+
+    def cut(self, mode='FULL'):
+        """ Cut paper.
+
+        Without any arguments the paper will be cut completely. With 'mode=PART' a partial cut will
+        be attempted. Note however, that not all models can do a partial cut. See the documentation of
+        your printer for details.
+
+        .. todo:: Check this function on TM-T88II.
+
+        :param mode: set to 'PART' for a partial cut. default: 'FULL'
+        :raises ValueError: if mode not in ('FULL', 'PART')
+        """
+        self.print_and_feed(6)
+
+        mode = mode.upper()
+        if mode not in ('FULL', 'PART'):
+            raise ValueError("Mode must be one of ('FULL', 'PART')")
+
+        if mode == "PART":
+            if self.profile.supports('paperPartCut'):
+                self._raw(PAPER_PART_CUT)
+            elif self.profile.supports('paperFullCut'):
+                self._raw(PAPER_FULL_CUT)
+        elif mode == "FULL":
+            if self.profile.supports('paperFullCut'):
+                self._raw(PAPER_FULL_CUT)
+            elif self.profile.supports('paperPartCut'):
+                self._raw(PAPER_PART_CUT)
+
+    def cashdraw(self, pin):
+        """ Send pulse to kick the cash drawer
+
+        Kick cash drawer on pin 2 or pin 5 according to default parameter.
+        For non default parameter send a decimal sequence i.e. [27,112,48] or [27,112,0,25,255]
+
+        :param pin: pin number, 2 or 5 or list of decimals
+        :raises: :py:exc:`~escpos.exceptions.CashDrawerError`
+        """
+        if pin == 2:
+            self._raw(CD_KICK_2)
+        elif pin == 5:
+            self._raw(CD_KICK_5)
+        else:
+            try:
+                self._raw(CD_KICK_DEC_SEQUENCE(*pin))
+            except:
+                raise CashDrawerError()
+
+    def hw(self, hw):
+        """ Hardware operations
+
+        :param hw: hardware action, may be:
+
+            * INIT
+            * SELECT
+            * RESET
+        """
+        if hw.upper() == "INIT":
+            self._raw(HW_INIT)
+        elif hw.upper() == "SELECT":
+            self._raw(HW_SELECT)
+        elif hw.upper() == "RESET":
+            self._raw(HW_RESET)
+        else:  # DEFAULT: DOES NOTHING
+            pass
+
+    def print_and_feed(self, n=1):
+        """ Print data in print buffer and feed *n* lines
+
+            if n not in range (0, 255) then ValueError will be raised
+
+            :param n: number of n to feed. 0 <= n <= 255. default: 1
+            :raises ValueError: if not 0 <= n <= 255
+        """
+        if 0 <= n <= 255:
+            # ESC d n
+            self._raw(ESC + b"d" + six.int2byte(n))
+        else:
+            raise ValueError("n must be betwen 0 and 255")
+
+    def control(self, ctl, pos=4):
+        """ Feed control sequences
+
+        :param ctl: string for the following control sequences:
+
+            * LF *for Line Feed*
+            * FF *for Form Feed*
+            * CR *for Carriage Return*
+            * HT *for Horizontal Tab*
+            * VT *for Vertical Tab*
+
+        :param pos: integer between 1 and 16, controls the horizontal tab position
+        :raises: :py:exc:`~escpos.exceptions.TabPosError`
+        """
+        # Set position
+        if ctl.upper() == "LF":
+            self._raw(CTL_LF)
+        elif ctl.upper() == "FF":
+            self._raw(CTL_FF)
+        elif ctl.upper() == "CR":
+            self._raw(CTL_CR)
+        elif ctl.upper() == "HT":
+            if not (1 <= pos <= 16):
+                raise TabPosError()
+            else:
+                # Set tab positions
+                self._raw(CTL_SET_HT + six.int2byte(pos))
+
+            self._raw(CTL_HT)
+        elif ctl.upper() == "VT":
+            self._raw(CTL_VT)
+
+    def panel_buttons(self, enable=True):
+        """ Controls the panel buttons on the printer (e.g. FEED)
+
+        When enable is set to False the panel buttons on the printer will be disabled. Calling the method with
+        enable=True or without argument will enable the panel buttons.
+
+        If panel buttons are enabled, the function of the panel button, such as feeding, will be executed upon pressing
+        the button. If the panel buttons are disabled, pressing them will not have any effect.
+
+        This command is effective until the printer is initialized, reset or power-cycled. The default is enabled panel
+        buttons.
+
+        Some panel buttons will always work, especially when printer is opened. See for more information the manual
+        of your printer and the escpos-command-reference.
+
+        :param enable: controls the panel buttons
+        :rtype: None
+        """
+        if enable:
+            self._raw(PANEL_BUTTON_ON)
+        else:
+            self._raw(PANEL_BUTTON_OFF)
+
+
+class EscposIO(object):
+    """ESC/POS Printer IO object
+
+    Allows the class to be used together with the `with`-statement. You have to define a printer instance
+    and assign it to the EsposIO-class.
+    This example explains the usage:
+
+    .. code-block:: Python
+
+        with EscposIO(printer.Serial('/dev/ttyUSB0')) as p:
+            p.set(font='a', height=2, align='center', text_type='bold')
+            p.printer.set(align='left')
+            p.printer.image('logo.gif')
+            p.writelines('Big line\\n', font='b')
+            p.writelines('Привет')
+            p.writelines('BIG TEXT', width=2)
+
+    After the `with`-statement the printer automatically cuts the paper if `autocut` is `True`.
+    """
+
+    def __init__(self, printer, autocut=True, autoclose=True, **kwargs):
+        """
+        :param printer: An EscPos-printer object
+        :type printer: escpos.Escpos
+        :param autocut: If True, paper is automatically cut after the `with`-statement *default*: True
+        :param kwargs: These arguments will be passed to :py:meth:`escpos.Escpos.set()`
+        """
+        self.printer = printer
+        self.params = kwargs
+        self.autocut = autocut
+        self.autoclose = autoclose
+
+    def set(self, **kwargs):
+        """ Set the printer-parameters
+
+        Controls which parameters will be passed to :py:meth:`Escpos.set() <escpos.escpos.Escpos.set()>`.
+        For more information on the parameters see the :py:meth:`set() <escpos.escpos.Escpos.set()>`-methods
+        documentation. These parameters can also be passed with this class' constructor or the
+        :py:meth:`~escpos.escpos.EscposIO.writelines()`-method.
+
+        :param kwargs: keyword-parameters that will be passed to :py:meth:`Escpos.set() <escpos.escpos.Escpos.set()>`
+        """
+        self.params.update(kwargs)
+
+    def writelines(self, text, **kwargs):
+        params = dict(self.params)
+        params.update(kwargs)
+
+        if isinstance(text, six.text_type):
+            lines = text.split('\n')
+        elif isinstance(text, list) or isinstance(text, tuple):
+            lines = text
+        else:
+            lines = ["{0}".format(text), ]
+
+        # TODO check unicode handling
+        # TODO flush? or on print? (this should prob rather be handled by the _raw-method)
+        for line in lines:
+            self.printer.set(**params)
+            if isinstance(text, six.text_type):
+                self.printer.text(u"{0}\n".format(line))
+            else:
+                self.printer.text("{0}\n".format(line))
+
+    def close(self):
+        """ called upon closing the `with`-statement
+        """
+        self.printer.close()
+
+    def __enter__(self, **kwargs):
+        return self
+
+    def __exit__(self, type, value, traceback):
+        """
+
+        If :py:attr:`autocut <escpos.escpos.EscposIO.autocut>` is `True` (set by this class' constructor),
+        then :py:meth:`printer.cut() <escpos.escpos.Escpos.cut()>` will be called here.
+        """
+        if not (type is not None and issubclass(type, Exception)):
+            if self.autocut:
+                self.printer.cut()
+
+        if self.autoclose:
+            self.close()

src/escpos/exceptions.py

@@ -0,0 +1,241 @@
+#  -*- coding: utf-8 -*-
+""" ESC/POS Exceptions classes
+
+Result/Exit codes:
+
+    - `0`  = success
+    - `10` = No Barcode type defined :py:exc:`~escpos.exceptions.BarcodeTypeError`
+    - `20` = Barcode size values are out of range :py:exc:`~escpos.exceptions.BarcodeSizeError`
+    - `30` = Barcode text not supplied :py:exc:`~escpos.exceptions.BarcodeCodeError`
+    - `40` = Image height is too large :py:exc:`~escpos.exceptions.ImageSizeError`
+    - `50` = No string supplied to be printed :py:exc:`~escpos.exceptions.TextError`
+    - `60` = Invalid pin to send Cash Drawer pulse :py:exc:`~escpos.exceptions.CashDrawerError`
+    - `70` = Invalid number of tab positions :py:exc:`~escpos.exceptions.TabPosError`
+    - `80` = Invalid char code :py:exc:`~escpos.exceptions.CharCodeError`
+    - `90` = USB device not found :py:exc:`~escpos.exceptions.USBNotFoundError`
+    - `100` = Set variable out of range :py:exc:`~escpos.exceptions.SetVariableError`
+    - `200` = Configuration not found :py:exc:`~escpos.exceptions.ConfigNotFoundError`
+    - `210` = Configuration syntax error :py:exc:`~escpos.exceptions.ConfigSyntaxError`
+    - `220` = Configuration section not found :py:exc:`~escpos.exceptions.ConfigSectionMissingError`
+
+:author: `Manuel F Martinez <manpaz@bashlinux.com>`_ and others
+:organization: Bashlinux and `python-escpos <https://github.com/python-escpos>`_
+:copyright: Copyright (c) 2012-2017 Bashlinux and python-escpos
+:license: MIT
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+
+class Error(Exception):
+    """ Base class for ESC/POS errors """
+    def __init__(self, msg, status=None):
+        Exception.__init__(self)
+        self.msg = msg
+        self.resultcode = 1
+        if status is not None:
+            self.resultcode = status
+
+    def __str__(self):
+        return self.msg
+
+
+class BarcodeTypeError(Error):
+    """ No Barcode type defined.
+
+    This exception indicates that no known barcode-type has been entered. The barcode-type has to be
+    one of those specified in :py:meth:`escpos.escpos.Escpos.barcode`.
+    The returned error code is `10`.
+    """
+    def __init__(self, msg=""):
+        Error.__init__(self, msg)
+        self.msg = msg
+        self.resultcode = 10
+
+    def __str__(self):
+        return "No Barcode type is defined ({msg})".format(msg=self.msg)
+
+
+class BarcodeSizeError(Error):
+    """ Barcode size is out of range.
+
+    This exception indicates that the values for the barcode size are out of range.
+    The size of the barcode has to be in the range that is specified in :py:meth:`escpos.escpos.Escpos.barcode`.
+    The resulting returncode is `20`.
+    """
+    def __init__(self, msg=""):
+        Error.__init__(self, msg)
+        self.msg = msg
+        self.resultcode = 20
+
+    def __str__(self):
+        return "Barcode size is out of range ({msg})".format(msg=self.msg)
+
+
+class BarcodeCodeError(Error):
+    """ No Barcode code was supplied.
+
+    No data for the barcode has been supplied in :py:meth:`escpos.escpos.Escpos.barcode`.
+    The returncode for this exception is `30`.
+    """
+    def __init__(self, msg=""):
+        Error.__init__(self, msg)
+        self.msg = msg
+        self.resultcode = 30
+
+    def __str__(self):
+        return "No Barcode code was supplied ({msg})".format(msg=self.msg)
+
+
+class ImageSizeError(Error):
+    """ Image height is longer than 255px and can't be printed.
+
+    The returncode for this exception is `40`.
+    """
+    def __init__(self, msg=""):
+        Error.__init__(self, msg)
+        self.msg = msg
+        self.resultcode = 40
+
+    def __str__(self):
+        return "Image height is longer than 255px and can't be printed ({msg})".format(msg=self.msg)
+
+
+class TextError(Error):
+    """ Text string must be supplied to the `text()` method.
+
+    This exception is raised when an empty string is passed to :py:meth:`escpos.escpos.Escpos.text`.
+    The returncode for this exception is `50`.
+    """
+    def __init__(self, msg=""):
+        Error.__init__(self, msg)
+        self.msg = msg
+        self.resultcode = 50
+
+    def __str__(self):
+        return "Text string must be supplied to the text() method ({msg})".format(msg=self.msg)
+
+
+class CashDrawerError(Error):
+    """ Valid pin must be set in order to send pulse.
+
+    A valid pin number has to be passed onto the method :py:meth:`escpos.escpos.Escpos.cashdraw`.
+    The returncode for this exception is `60`.
+    """
+    def __init__(self, msg=""):
+        Error.__init__(self, msg)
+        self.msg = msg
+        self.resultcode = 60
+
+    def __str__(self):
+        return "Valid pin must be set to send pulse ({msg})".format(msg=self.msg)
+
+
+class TabPosError(Error):
+    """ Valid tab positions must be in the range 0 to 16.
+
+    This exception is raised by :py:meth:`escpos.escpos.Escpos.control`.
+    The returncode for this exception is `70`.
+    """
+    def __init__(self, msg=""):
+        Error.__init__(self, msg)
+        self.msg = msg
+        self.resultcode = 70
+
+    def __str__(self):
+        return "Valid tab positions must be in the range 0 to 16 ({msg})".format(msg=self.msg)
+
+
+class CharCodeError(Error):
+    """ Valid char code must be set.
+
+    The supplied charcode-name in :py:meth:`escpos.escpos.Escpos.charcode` is unknown.
+    Ths returncode for this exception is `80`.
+    """
+    def __init__(self, msg=""):
+        Error.__init__(self, msg)
+        self.msg = msg
+        self.resultcode = 80
+
+    def __str__(self):
+        return "Valid char code must be set ({msg})".format(msg=self.msg)
+
+
+class USBNotFoundError(Error):
+    """ Device wasn't found (probably not plugged in)
+
+    The USB device seems to be not plugged in.
+    Ths returncode for this exception is `90`.
+    """
+    def __init__(self, msg=""):
+        Error.__init__(self, msg)
+        self.msg = msg
+        self.resultcode = 90
+
+    def __str__(self):
+        return "USB device not found ({msg})".format(msg=self.msg)
+
+
+class SetVariableError(Error):
+    """ A set method variable was out of range
+
+    Check set variables against minimum and maximum values
+    Ths returncode for this exception is `100`.
+    """
+    def __init__(self, msg=""):
+        Error.__init__(self, msg)
+        self.msg = msg
+        self.resultcode = 100
+
+    def __str__(self):
+        return "Set variable out of range ({msg})".format(msg=self.msg)
+
+
+# Configuration errors
+
+class ConfigNotFoundError(Error):
+    """ The configuration file was not found
+
+    The default or passed configuration file could not be read
+    Ths returncode for this exception is `200`.
+    """
+    def __init__(self, msg=""):
+        Error.__init__(self, msg)
+        self.msg = msg
+        self.resultcode = 200
+
+    def __str__(self):
+        return "Configuration not found ({msg})".format(msg=self.msg)
+
+
+class ConfigSyntaxError(Error):
+    """ The configuration file is invalid
+
+    The syntax is incorrect
+    Ths returncode for this exception is `210`.
+    """
+    def __init__(self, msg=""):
+        Error.__init__(self, msg)
+        self.msg = msg
+        self.resultcode = 210
+
+    def __str__(self):
+        return "Configuration syntax is invalid ({msg})".format(msg=self.msg)
+
+
+class ConfigSectionMissingError(Error):
+    """ The configuration file is missing a section
+
+    The part of the config asked for doesn't exist in the loaded configuration
+    Ths returncode for this exception is `220`.
+    """
+    def __init__(self, msg=""):
+        Error.__init__(self, msg)
+        self.msg = msg
+        self.resultcode = 220
+
+    def __str__(self):
+        return "Configuration section is missing ({msg})".format(msg=self.msg)

src/escpos/image.py

@@ -0,0 +1,117 @@
+""" Image format handling class
+
+This module contains the image format handler :py:class:`EscposImage`.
+
+:author: `Michael Billington <michael.billington@gmail.com>`_
+:organization: `python-escpos <https://github.com/python-escpos>`_
+:copyright: Copyright (c) 2016 Michael Billington <michael.billington@gmail.com>
+:license: MIT
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import math
+from PIL import Image, ImageOps
+
+
+class EscposImage(object):
+    """
+    Load images in, and output ESC/POS formats.
+
+    The class is designed to efficiently delegate image processing to
+    PIL, rather than spend CPU cycles looping over pixels.
+    """
+
+    def __init__(self, img_source):
+        """
+        Load in an image
+
+        :param img_source: PIL.Image, or filename to load one from.
+        """
+        if isinstance(img_source, Image.Image):
+            img_original = img_source
+        else:
+            img_original = Image.open(img_source)
+
+        # store image for eventual further processing (splitting)
+        self.img_original = img_original
+
+        # Convert to white RGB background, paste over white background
+        # to strip alpha.
+        img_original = img_original.convert('RGBA')
+        im = Image.new("RGB", img_original.size, (255, 255, 255))
+        im.paste(img_original, mask=img_original.split()[3])
+        # Convert down to greyscale
+        im = im.convert("L")
+        # Invert: Only works on 'L' images
+        im = ImageOps.invert(im)
+        # Pure black and white
+        self._im = im.convert("1")
+
+    @property
+    def width(self):
+        """
+        Width of image in pixels
+        """
+        width_pixels, _ = self._im.size
+        return width_pixels
+
+    @property
+    def width_bytes(self):
+        """
+        Width of image if you use 8 pixels per byte and 0-pad at the end.
+        """
+        return (self.width + 7) >> 3
+
+    @property
+    def height(self):
+        """
+        Height of image in pixels
+        """
+        _, height_pixels = self._im.size
+        return height_pixels
+
+    def to_column_format(self, high_density_vertical=True):
+        """
+        Extract slices of an image as equal-sized blobs of column-format data.
+
+        :param high_density_vertical: Printed line height in dots
+        """
+        im = self._im.transpose(Image.ROTATE_270).transpose(Image.FLIP_LEFT_RIGHT)
+        line_height = 24 if high_density_vertical else 8
+        width_pixels, height_pixels = im.size
+        top = 0
+        left = 0
+        while left < width_pixels:
+            box = (left, top, left + line_height, top + height_pixels)
+            im_slice = im.transform((line_height, height_pixels), Image.EXTENT, box)
+            im_bytes = im_slice.tobytes()
+            yield(im_bytes)
+            left += line_height
+
+    def to_raster_format(self):
+        """
+        Convert image to raster-format binary
+        """
+        return self._im.tobytes()
+
+    def split(self, fragment_height):
+        """
+        Split an image into multiple fragments after fragment_height pixels
+
+        :param fragment_height: height of fragment
+        :return: list of PIL objects
+        """
+        passes = int(math.ceil(self.height/fragment_height))
+        fragments = []
+        for n in range(0, passes):
+            left = 0
+            right = self.width
+            upper = n * fragment_height
+            lower = min((n + 1) * fragment_height, self.height)
+            box = (left, upper, right, lower)
+            fragments.append(self.img_original.crop(box))
+        return fragments

src/escpos/katakana.py

@@ -0,0 +1,107 @@
+#  -*- coding: utf-8 -*-
+"""Helpers to encode Japanese characters.
+
+I doubt that this currently works correctly.
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+
+try:
+    import jaconv
+except ImportError:
+    jaconv = None
+
+
+def encode_katakana(text):
+    """I don't think this quite works yet."""
+    encoded = []
+    for char in text:
+        if jaconv:
+            # try to convert japanese text to half-katakanas
+            char = jaconv.z2h(jaconv.hira2kata(char))
+            # TODO: "the conversion may result in multiple characters"
+            # If that really can happen (I am not really shure), than the string would have to be split and every single
+            #  character has to passed through the following lines.
+
+        if char in TXT_ENC_KATAKANA_MAP:
+            encoded.append(TXT_ENC_KATAKANA_MAP[char])
+        else:
+            # TODO doesn't this discard all that is not in the map? Can we be sure that the input does contain only
+            # encodable characters? We could at least throw an exception if encoding is not possible.
+            pass
+    return b"".join(encoded)
+
+
+TXT_ENC_KATAKANA_MAP = {
+    # Maps UTF-8 Katakana symbols to KATAKANA Page Codes
+    # TODO: has this really to be hardcoded?
+
+    # Half-Width Katakanas
+    '｡': b'\xa1',
+    '｢': b'\xa2',
+    '｣': b'\xa3',
+    '､': b'\xa4',
+    '･': b'\xa5',
+    'ｦ': b'\xa6',
+    'ｧ': b'\xa7',
+    'ｨ': b'\xa8',
+    'ｩ': b'\xa9',
+    'ｪ': b'\xaa',
+    'ｫ': b'\xab',
+    'ｬ': b'\xac',
+    'ｭ': b'\xad',
+    'ｮ': b'\xae',
+    'ｯ': b'\xaf',
+    'ｰ': b'\xb0',
+    'ｱ': b'\xb1',
+    'ｲ': b'\xb2',
+    'ｳ': b'\xb3',
+    'ｴ': b'\xb4',
+    'ｵ': b'\xb5',
+    'ｶ': b'\xb6',
+    'ｷ': b'\xb7',
+    'ｸ': b'\xb8',
+    'ｹ': b'\xb9',
+    'ｺ': b'\xba',
+    'ｻ': b'\xbb',
+    'ｼ': b'\xbc',
+    'ｽ': b'\xbd',
+    'ｾ': b'\xbe',
+    'ｿ': b'\xbf',
+    'ﾀ': b'\xc0',
+    'ﾁ': b'\xc1',
+    'ﾂ': b'\xc2',
+    'ﾃ': b'\xc3',
+    'ﾄ': b'\xc4',
+    'ﾅ': b'\xc5',
+    'ﾆ': b'\xc6',
+    'ﾇ': b'\xc7',
+    'ﾈ': b'\xc8',
+    'ﾉ': b'\xc9',
+    'ﾊ': b'\xca',
+    'ﾋ': b'\xcb',
+    'ﾌ': b'\xcc',
+    'ﾍ': b'\xcd',
+    'ﾎ': b'\xce',
+    'ﾏ': b'\xcf',
+    'ﾐ': b'\xd0',
+    'ﾑ': b'\xd1',
+    'ﾒ': b'\xd2',
+    'ﾓ': b'\xd3',
+    'ﾔ': b'\xd4',
+    'ﾕ': b'\xd5',
+    'ﾖ': b'\xd6',
+    'ﾗ': b'\xd7',
+    'ﾘ': b'\xd8',
+    'ﾙ': b'\xd9',
+    'ﾚ': b'\xda',
+    'ﾛ': b'\xdb',
+    'ﾜ': b'\xdc',
+    'ﾝ': b'\xdd',
+    'ﾞ': b'\xde',
+    'ﾟ': b'\xdf',
+}

src/escpos/magicencode.py

@@ -0,0 +1,296 @@
+#!/usr/bin/python
+#  -*- coding: utf-8 -*-
+""" Magic Encode
+
+This module tries to convert an UTF-8 string to an encoded string for the printer.
+It uses trial and error in order to guess the right codepage.
+The code is based on the encoding-code in py-xml-escpos by @fvdsn.
+
+:author: `Patrick Kanzler <dev@pkanzler.de>`_
+:organization: `python-escpos <https://github.com/python-escpos>`_
+:copyright: Copyright (c) 2016 Patrick Kanzler and Frédéric van der Essen
+:license: MIT
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+from builtins import bytes
+from .constants import CODEPAGE_CHANGE
+from .exceptions import Error
+from .codepages import CodePages
+import six
+
+
+class Encoder(object):
+    """Takes a list of available code spaces. Picks the right one for a
+    given character.
+
+    Note: To determine the code page, it needs to do the conversion, and
+    thus already knows what the final byte in the target encoding would
+    be. Nevertheless, the API of this class doesn't return the byte.
+
+    The caller use to do the character conversion itself.
+
+        $ python -m timeit -s "{u'ö':'a'}.get(u'ö')"
+        100000000 loops, best of 3: 0.0133 usec per loop
+
+        $ python -m timeit -s "u'ö'.encode('latin1')"
+        100000000 loops, best of 3: 0.0141 usec per loop
+    """
+
+    def __init__(self, codepage_map):
+        self.codepages = codepage_map
+        self.available_encodings = set(codepage_map.keys())
+        self.available_characters = {}
+        self.used_encodings = set()
+
+    def get_sequence(self, encoding):
+        return int(self.codepages[encoding])
+
+    def get_encoding_name(self, encoding):
+        """Given an encoding provided by the user, will return a
+        canonical encoding name; and also validate that the encoding
+        is supported.
+
+        TODO: Support encoding aliases: pc437 instead of cp437.
+        """
+        encoding = CodePages.get_encoding_name(encoding)
+        if encoding not in self.codepages:
+            raise ValueError((
+                'Encoding "{}" cannot be used for the current profile. '
+                'Valid encodings are: {}'
+                ).format(encoding, ','.join(self.codepages.keys())))
+        return encoding
+
+    @staticmethod
+    def _get_codepage_char_list(encoding):
+        """Get codepage character list
+
+        Gets characters 128-255 for a given code page, as an array.
+
+        :param encoding: The name of the encoding. This must appear in the CodePage list
+        """
+        codepage = CodePages.get_encoding(encoding)
+        if 'data' in codepage:
+            encodable_chars = list("".join(codepage['data']))
+            assert(len(encodable_chars) == 128)
+            return encodable_chars
+        elif 'python_encode' in codepage:
+            encodable_chars = [u" "] * 128
+            for i in range(0, 128):
+                codepoint = i + 128
+                try:
+                    encodable_chars[i] = bytes([codepoint]).decode(codepage['python_encode'])
+                except UnicodeDecodeError:
+                    # Non-encodable character, just skip it
+                    pass
+            return encodable_chars
+        raise LookupError("Can't find a known encoding for {}".format(encoding))
+
+    def _get_codepage_char_map(self, encoding):
+        """ Get codepage character map
+
+        Process an encoding and return a map of UTF-characters to code points
+        in this encoding.
+
+        This is generated once only, and returned from a cache.
+
+        :param encoding: The name of the encoding.
+        """
+        # Skip things that were loaded previously
+        if encoding in self.available_characters:
+            return self.available_characters[encoding]
+        codepage_char_list = self._get_codepage_char_list(encoding)
+        codepage_char_map = dict((utf8, i + 128) for (i, utf8) in enumerate(codepage_char_list))
+        self.available_characters[encoding] = codepage_char_map
+        return codepage_char_map
+
+    def can_encode(self, encoding, char):
+        """Determine if a character is encodeable in the given code page.
+
+        :param encoding: The name of the encoding.
+        :param char: The character to attempt to encode.
+        """
+        available_map = {}
+        try:
+            available_map = self._get_codepage_char_map(encoding)
+        except LookupError:
+            return False
+
+        # Decide whether this character is encodeable in this code page
+        is_ascii = ord(char) < 128
+        is_encodable = char in available_map
+        return is_ascii or is_encodable
+
+    @staticmethod
+    def _encode_char(char, charmap, defaultchar):
+        """ Encode a single character with the given encoding map
+
+        :param char: char to encode
+        :param charmap: dictionary for mapping characters in this code page
+        """
+        if ord(char) < 128:
+            return ord(char)
+        if char in charmap:
+            return charmap[char]
+        return ord(defaultchar)
+
+    def encode(self, text, encoding, defaultchar='?'):
+        """ Encode text under the given encoding
+
+        :param text: Text to encode
+        :param encoding: Encoding name to use (must be defined in capabilities)
+        :param defaultchar: Fallback for non-encodable characters
+        """
+        codepage_char_map = self._get_codepage_char_map(encoding)
+        output_bytes = bytes([self._encode_char(char, codepage_char_map, defaultchar) for char in text])
+        return output_bytes
+
+    def __encoding_sort_func(self, item):
+        key, index = item
+        return (
+            key in self.used_encodings,
+            index
+        )
+
+    def find_suitable_encoding(self, char):
+        """The order of our search is a specific one:
+
+        1. code pages that we already tried before; there is a good
+           chance they might work again, reducing the search space,
+           and by re-using already used encodings we might also
+           reduce the number of codepage change instructiosn we have
+           to send. Still, any performance gains will presumably be
+           fairly minor.
+
+        2. code pages in lower ESCPOS slots first. Presumably, they
+           are more likely to be supported, so if a printer profile
+           is missing or incomplete, we might increase our change
+           that the code page we pick for this character is actually
+           supported.
+        """
+        sorted_encodings = sorted(
+            self.codepages.items(),
+            key=self.__encoding_sort_func)
+
+        for encoding, _ in sorted_encodings:
+            if self.can_encode(encoding, char):
+                # This encoding worked; at it to the set of used ones.
+                self.used_encodings.add(encoding)
+                return encoding
+
+
+def split_writable_text(encoder, text, encoding):
+    """Splits off as many characters from the begnning of text as
+    are writable with "encoding". Returns a 2-tuple (writable, rest).
+    """
+    if not encoding:
+        return None, text
+
+    for idx, char in enumerate(text):
+        if encoder.can_encode(encoding, char):
+            continue
+        return text[:idx], text[idx:]
+
+    return text, None
+
+
+class MagicEncode(object):
+    """A helper that helps us to automatically switch to the right
+    code page to encode any given Unicode character.
+
+    This will consider the printers supported codepages, according
+    to the printer profile, and if a character cannot be encoded
+    with the current profile, it will attempt to find a suitable one.
+
+    If the printer does not support a suitable code page, it can
+    insert an error character.
+    """
+    def __init__(self, driver, encoding=None, disabled=False,
+                 defaultsymbol='?', encoder=None):
+        """
+
+        :param driver:
+        :param encoding: If you know the current encoding of the printer
+        when initializing this class, set it here. If the current
+        encoding is unknown, the first character emitted will be a
+        codepage switch.
+        :param disabled:
+        :param defaultsymbol:
+        :param encoder:
+        """
+        if disabled and not encoding:
+            raise Error('If you disable magic encode, you need to define an encoding!')
+
+        self.driver = driver
+        self.encoder = encoder or Encoder(driver.profile.get_code_pages())
+
+        self.encoding = self.encoder.get_encoding_name(encoding) if encoding else None
+        self.defaultsymbol = defaultsymbol
+        self.disabled = disabled
+
+    def force_encoding(self, encoding):
+        """Sets a fixed encoding. The change is emitted right away.
+
+        From now one, this buffer will switch the code page anymore.
+        However, it will still keep track of the current code page.
+        """
+        if not encoding:
+            self.disabled = False
+        else:
+            self.write_with_encoding(encoding, None)
+            self.disabled = True
+
+    def write(self, text):
+        """Write the text, automatically switching encodings.
+        """
+
+        if self.disabled:
+            self.write_with_encoding(self.encoding, text)
+            return
+
+        # See how far we can go into the text with the current encoding
+        to_write, text = split_writable_text(self.encoder, text, self.encoding)
+        if to_write:
+            self.write_with_encoding(self.encoding, to_write)
+
+        while text:
+            # See if any of the code pages that the printer profile
+            # supports can encode this character.
+            encoding = self.encoder.find_suitable_encoding(text[0])
+            if not encoding:
+                self._handle_character_failed(text[0])
+                text = text[1:]
+                continue
+
+            # Write as much text as possible with the encoding found.
+            to_write, text = split_writable_text(self.encoder, text, encoding)
+            if to_write:
+                self.write_with_encoding(encoding, to_write)
+
+    def _handle_character_failed(self, char):
+        """Called when no codepage was found to render a character.
+        """
+        # Writing the default symbol via write() allows us to avoid
+        # unnecesary codepage switches.
+        self.write(self.defaultsymbol)
+
+    def write_with_encoding(self, encoding, text):
+        if text is not None and type(text) is not six.text_type:
+            raise Error("The supplied text has to be unicode, but is of type {type}.".format(
+                type=type(text)
+            ))
+
+        # We always know the current code page; if the new codepage
+        # is different, emit a change command.
+        if encoding != self.encoding:
+            self.encoding = encoding
+            self.driver._raw(
+                CODEPAGE_CHANGE +
+                six.int2byte(self.encoder.get_sequence(encoding)))
+
+        if text:
+            self.driver._raw(self.encoder.encode(text, encoding))

src/escpos/printer.py

@@ -0,0 +1,306 @@
+#!/usr/bin/python
+#  -*- coding: utf-8 -*-
+""" This module contains the implementations of abstract base class :py:class:`Escpos`.
+
+:author: `Manuel F Martinez <manpaz@bashlinux.com>`_ and others
+:organization: Bashlinux and `python-escpos <https://github.com/python-escpos>`_
+:copyright: Copyright (c) 2012-2017 Bashlinux and python-escpos
+:license: MIT
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import usb.core
+import usb.util
+import serial
+import socket
+
+from .escpos import Escpos
+from .exceptions import USBNotFoundError
+
+
+class Usb(Escpos):
+    """ USB printer
+
+    This class describes a printer that natively speaks USB.
+
+    inheritance:
+
+    .. inheritance-diagram:: escpos.printer.Usb
+        :parts: 1
+
+    """
+
+    def __init__(self, idVendor, idProduct, timeout=0, in_ep=0x82, out_ep=0x01, *args, **kwargs):  # noqa: N803
+        """
+        :param idVendor: Vendor ID
+        :param idProduct: Product ID
+        :param timeout: Is the time limit of the USB operation. Default without timeout.
+        :param in_ep: Input end point
+        :param out_ep: Output end point
+        """
+        Escpos.__init__(self, *args, **kwargs)
+        self.idVendor = idVendor
+        self.idProduct = idProduct
+        self.timeout = timeout
+        self.in_ep = in_ep
+        self.out_ep = out_ep
+        self.open()
+
+    def open(self):
+        """ Search device on USB tree and set it as escpos device """
+        self.device = usb.core.find(idVendor=self.idVendor, idProduct=self.idProduct)
+        if self.device is None:
+            raise USBNotFoundError("Device not found or cable not plugged in.")
+
+        check_driver = None
+
+        try:
+            check_driver = self.device.is_kernel_driver_active(0)
+        except NotImplementedError:
+            pass
+
+        if check_driver is None or check_driver:
+            try:
+                self.device.detach_kernel_driver(0)
+            except usb.core.USBError as e:
+                if check_driver is not None:
+                    print("Could not detatch kernel driver: {0}".format(str(e)))
+
+        try:
+            self.device.set_configuration()
+            self.device.reset()
+        except usb.core.USBError as e:
+            print("Could not set configuration: {0}".format(str(e)))
+
+    def _raw(self, msg):
+        """ Print any command sent in raw format
+
+        :param msg: arbitrary code to be printed
+        :type msg: bytes
+        """
+        self.device.write(self.out_ep, msg, self.timeout)
+
+    def close(self):
+        """ Release USB interface """
+        if self.device:
+            usb.util.dispose_resources(self.device)
+        self.device = None
+
+
+class Serial(Escpos):
+    """ Serial printer
+
+    This class describes a printer that is connected by serial interface.
+
+    inheritance:
+
+    .. inheritance-diagram:: escpos.printer.Serial
+        :parts: 1
+
+    """
+
+    def __init__(self, devfile="/dev/ttyS0", baudrate=9600, bytesize=8, timeout=1,
+                 parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE,
+                 xonxoff=False, dsrdtr=True, *args, **kwargs):
+        """
+
+        :param devfile:  Device file under dev filesystem
+        :param baudrate: Baud rate for serial transmission
+        :param bytesize: Serial buffer size
+        :param timeout:  Read/Write timeout
+        :param parity:   Parity checking
+        :param stopbits: Number of stop bits
+        :param xonxoff:  Software flow control
+        :param dsrdtr:   Hardware flow control (False to enable RTS/CTS)
+        """
+        Escpos.__init__(self, *args, **kwargs)
+        self.devfile = devfile
+        self.baudrate = baudrate
+        self.bytesize = bytesize
+        self.timeout = timeout
+        self.parity = parity
+        self.stopbits = stopbits
+        self.xonxoff = xonxoff
+        self.dsrdtr = dsrdtr
+
+        self.open()
+
+    def open(self):
+        """ Setup serial port and set is as escpos device """
+        self.device = serial.Serial(port=self.devfile, baudrate=self.baudrate,
+                                    bytesize=self.bytesize, parity=self.parity,
+                                    stopbits=self.stopbits, timeout=self.timeout,
+                                    xonxoff=self.xonxoff, dsrdtr=self.dsrdtr)
+
+        if self.device is not None:
+            print("Serial printer enabled")
+        else:
+            print("Unable to open serial printer on: {0}".format(str(self.devfile)))
+
+    def _raw(self, msg):
+        """ Print any command sent in raw format
+
+        :param msg: arbitrary code to be printed
+        :type msg: bytes
+        """
+        self.device.write(msg)
+
+    def close(self):
+        """ Close Serial interface """
+        if self.device is not None:
+            self.device.flush()
+            self.device.close()
+
+
+class Network(Escpos):
+    """ Network printer
+
+    This class is used to attach to a networked printer. You can also use this in order to attach to a printer that
+    is forwarded with ``socat``.
+
+    If you have a local printer on parallel port ``/dev/usb/lp0`` then you could start ``socat`` with:
+
+    .. code-block:: none
+
+        socat -u TCP4-LISTEN:4242,reuseaddr,fork OPEN:/dev/usb/lp0
+
+    Then you should be able to attach to port ``4242`` with this class.
+    Otherwise the normal usecase would be to have a printer with ethernet interface. This type of printer should
+    work the same with this class. For the address of the printer check its manuals.
+
+    inheritance:
+
+    .. inheritance-diagram:: escpos.printer.Network
+        :parts: 1
+
+    """
+
+    def __init__(self, host, port=9100, timeout=60, *args, **kwargs):
+        """
+
+        :param host:    Printer's hostname or IP address
+        :param port:    Port to write to
+        :param timeout: timeout in seconds for the socket-library
+        """
+        Escpos.__init__(self, *args, **kwargs)
+        self.host = host
+        self.port = port
+        self.timeout = timeout
+        self.open()
+
+    def open(self):
+        """ Open TCP socket with ``socket``-library and set it as escpos device """
+        self.device = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        self.device.settimeout(self.timeout)
+        self.device.connect((self.host, self.port))
+
+        if self.device is None:
+            print("Could not open socket for {0}".format(self.host))
+
+    def _raw(self, msg):
+        """ Print any command sent in raw format
+
+        :param msg: arbitrary code to be printed
+        :type msg: bytes
+        """
+        self.device.sendall(msg)
+
+    def close(self):
+        """ Close TCP connection """
+        if self.device is not None:
+            self.device.shutdown(socket.SHUT_RDWR)
+            self.device.close()
+
+
+class File(Escpos):
+    """ Generic file printer
+
+    This class is used for parallel port printer or other printers that are directly attached to the filesystem.
+    Note that you should stay away from using USB-to-Parallel-Adapter since they are unreliable
+    and produce arbitrary errors.
+
+    inheritance:
+
+    .. inheritance-diagram:: escpos.printer.File
+        :parts: 1
+
+    """
+
+    def __init__(self, devfile="/dev/usb/lp0", auto_flush=True, *args, **kwargs):
+        """
+
+        :param devfile : Device file under dev filesystem
+        :param auto_flush: automatically call flush after every call of _raw()
+        """
+        Escpos.__init__(self, *args, **kwargs)
+        self.devfile = devfile
+        self.auto_flush = auto_flush
+        self.open()
+
+    def open(self):
+        """ Open system file """
+        self.device = open(self.devfile, "wb")
+
+        if self.device is None:
+            print("Could not open the specified file {0}".format(self.devfile))
+
+    def flush(self):
+        """ Flush printing content """
+        self.device.flush()
+
+    def _raw(self, msg):
+        """ Print any command sent in raw format
+
+        :param msg: arbitrary code to be printed
+        :type msg: bytes
+        """
+        self.device.write(msg)
+        if self.auto_flush:
+            self.flush()
+
+    def close(self):
+        """ Close system file """
+        if self.device is not None:
+            self.device.flush()
+            self.device.close()
+
+
+class Dummy(Escpos):
+    """ Dummy printer
+
+    This class is used for saving commands to a variable, for use in situations where
+    there is no need to send commands to an actual printer. This includes
+    generating print jobs for later use, or testing output.
+
+    inheritance:
+
+    .. inheritance-diagram:: escpos.printer.Dummy
+        :parts: 1
+
+    """
+
+    def __init__(self, *args, **kwargs):
+        """
+        """
+        Escpos.__init__(self, *args, **kwargs)
+        self._output_list = []
+
+    def _raw(self, msg):
+        """ Print any command sent in raw format
+
+        :param msg: arbitrary code to be printed
+        :type msg: bytes
+        """
+        self._output_list.append(msg)
+
+    @property
+    def output(self):
+        """ Get the data that was sent to this printer """
+        return b''.join(self._output_list)
+
+    def close(self):
+        pass

test/conftest.py

@@ -0,0 +1,7 @@
+import pytest
+from escpos.printer import Dummy
+
+
+@pytest.fixture
+def driver():
+    return Dummy()

test/test_abstract_base_class.py

@@ -0,0 +1,30 @@
+#!/usr/bin/python
+"""verifies that the metaclass abc is properly used by Escpos
+
+:author: `Patrick Kanzler <patrick.kanzler@fablab.fau.de>`_
+:organization: `python-escpos <https://github.com/python-escpos>`_
+:copyright: Copyright (c) 2016 Patrick Kanzler
+:license: MIT
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+from nose.tools import raises
+
+import escpos.escpos as escpos
+from abc import ABCMeta
+
+
+@raises(TypeError)
+def test_abstract_base_class_raises():
+    """test whether the abstract base class raises an exception for Escpos"""
+    escpos.Escpos()  # This call should raise TypeError because of abstractmethod _raw()
+
+
+def test_abstract_base_class():
+    """ test whether Escpos has the metaclass ABCMeta """
+    assert issubclass(escpos.Escpos, object)
+    assert type(escpos.Escpos) is ABCMeta

test/test_cli.py

@@ -0,0 +1,118 @@
+"""Test for the CLI
+
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import os
+import sys
+from scripttest import TestFileEnvironment
+from nose.tools import assert_equals, nottest
+import escpos
+
+TEST_DIR = os.path.abspath('test/test-cli-output')
+
+DEVFILE_NAME = 'testfile'
+
+DEVFILE = os.path.join(TEST_DIR, DEVFILE_NAME)
+CONFIGFILE = 'testconfig.yaml'
+CONFIG_YAML = '''
+---
+
+printer:
+    type: file
+    devfile: {testfile}
+'''.format(
+    testfile=DEVFILE,
+)
+
+
+class TestCLI:
+    """ Contains setups, teardowns, and tests for CLI
+    """
+
+    @classmethod
+    def setup_class(cls):
+        """ Create a config file to read from """
+        with open(CONFIGFILE, 'w') as config:
+            config.write(CONFIG_YAML)
+
+    @classmethod
+    def teardown_class(cls):
+        """ Remove config file """
+        os.remove(CONFIGFILE)
+
+    def setup(self):
+        """ Create a file to print to and set up env"""
+        self.env = None
+        self.default_args = None
+
+        self.env = TestFileEnvironment(
+            base_path=TEST_DIR,
+            cwd=os.getcwd(),
+        )
+
+        self.default_args = (
+            'python-escpos',
+            '-c',
+            CONFIGFILE,
+        )
+
+        fhandle = open(DEVFILE, 'a')
+        try:
+            os.utime(DEVFILE, None)
+        finally:
+            fhandle.close()
+
+    def teardown(self):
+        """ Destroy printer file and env """
+        os.remove(DEVFILE)
+        self.env.clear()
+
+    def test_cli_help(self):
+        """ Test getting help from cli """
+        result = self.env.run('python-escpos', '-h')
+        assert not result.stderr
+        assert 'usage' in result.stdout
+
+    def test_cli_version(self):
+        """ Test the version string """
+        result = self.env.run('python-escpos', 'version')
+        assert not result.stderr
+        assert_equals(escpos.__version__, result.stdout.strip())
+
+    @nottest  # disable this test as it is not that easy anymore to predict the outcome of this call
+    def test_cli_text(self):
+        """ Make sure text returns what we sent it """
+        test_text = 'this is some text'
+        result = self.env.run(
+            *(self.default_args + (
+                'text',
+                '--txt',
+                test_text,
+            ))
+        )
+        assert not result.stderr
+        assert DEVFILE_NAME in result.files_updated.keys()
+        assert_equals(
+            result.files_updated[DEVFILE_NAME].bytes,
+            test_text + '\n'
+        )
+
+    def test_cli_text_inavlid_args(self):
+        """ Test a failure to send valid arguments """
+        result = self.env.run(
+            *(self.default_args + (
+                'text',
+                '--invalid-param',
+                'some data'
+            )),
+            expect_error=True,
+            expect_stderr=True
+        )
+        assert_equals(result.returncode, 2)
+        assert 'error:' in result.stderr
+        assert not result.files_updated

test/test_function_barcode.py

@@ -0,0 +1,38 @@
+#!/usr/bin/python
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import escpos.printer as printer
+from escpos.constants import BARCODE_TYPE_A, BARCODE_TYPE_B
+from escpos.capabilities import Profile, BARCODE_B
+from escpos.exceptions import BarcodeTypeError
+import pytest
+
+
+@pytest.mark.parametrize("bctype,data,expected", [
+    ('EAN13', '4006381333931',
+        b'\x1ba\x01\x1dh@\x1dw\x03\x1df\x00\x1dH\x02\x1dk\x024006381333931\x00')
+])
+def test_barcode(bctype, data, expected):
+    """should generate different barcode types correctly.
+    """
+    instance = printer.Dummy()
+    instance.barcode(data, bctype)
+    assert instance.output == expected
+
+
+@pytest.mark.parametrize("bctype,supports_b", [
+    ('invalid', True),
+    ('CODE128', False),
+])
+def test_lacks_support(bctype, supports_b):
+    """should raise an error if the barcode type is not supported.
+    """
+    profile = Profile(features={BARCODE_B: supports_b})
+    instance = printer.Dummy(profile=profile)
+    with pytest.raises(BarcodeTypeError):
+        instance.barcode('test', bctype)
+
+    assert instance.output == b''

test/test_function_image.py

@@ -0,0 +1,141 @@
+#!/usr/bin/env python
+""" Image function tests- Check that image print commands are sent correctly.
+
+:author: `Michael Billington <michael.billington@gmail.com>`_
+:organization: `python-escpos <https://github.com/python-escpos>`_
+:copyright: Copyright (c) 2016 `Michael Billington <michael.billington@gmail.com>`_
+:license: MIT
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import escpos.printer as printer
+from PIL import Image
+
+
+# Raster format print
+def test_bit_image_black():
+    """
+    Test printing solid black bit image (raster)
+    """
+    instance = printer.Dummy()
+    instance.image('test/resources/canvas_black.png', impl="bitImageRaster")
+    assert(instance.output == b'\x1dv0\x00\x01\x00\x01\x00\x80')
+    # Same thing w/ object created on the fly, rather than a filename
+    instance = printer.Dummy()
+    im = Image.new("RGB", (1, 1), (0, 0, 0))
+    instance.image(im, impl="bitImageRaster")
+    assert(instance.output == b'\x1dv0\x00\x01\x00\x01\x00\x80')
+
+
+def test_bit_image_white():
+    """
+    Test printing solid white bit image (raster)
+    """
+    instance = printer.Dummy()
+    instance.image('test/resources/canvas_white.png', impl="bitImageRaster")
+    assert(instance.output == b'\x1dv0\x00\x01\x00\x01\x00\x00')
+
+
+def test_bit_image_both():
+    """
+    Test printing black/white bit image (raster)
+    """
+    instance = printer.Dummy()
+    instance.image('test/resources/black_white.png', impl="bitImageRaster")
+    assert(instance.output == b'\x1dv0\x00\x01\x00\x02\x00\xc0\x00')
+
+
+def test_bit_image_transparent():
+    """
+    Test printing black/transparent bit image (raster)
+    """
+    instance = printer.Dummy()
+    instance.image('test/resources/black_transparent.png', impl="bitImageRaster")
+    assert(instance.output == b'\x1dv0\x00\x01\x00\x02\x00\xc0\x00')
+
+
+# Column format print
+def test_bit_image_colfmt_black():
+    """
+    Test printing solid black bit image (column format)
+    """
+    instance = printer.Dummy()
+    instance.image('test/resources/canvas_black.png', impl="bitImageColumn")
+    assert(instance.output == b'\x1b3\x10\x1b*!\x01\x00\x80\x00\x00\x0a\x1b2')
+
+
+def test_bit_image_colfmt_white():
+    """
+    Test printing solid white bit image (column format)
+    """
+    instance = printer.Dummy()
+    instance.image('test/resources/canvas_white.png', impl="bitImageColumn")
+    assert(instance.output == b'\x1b3\x10\x1b*!\x01\x00\x00\x00\x00\x0a\x1b2')
+
+
+def test_bit_image_colfmt_both():
+    """
+    Test printing black/white bit image (column format)
+    """
+    instance = printer.Dummy()
+    instance.image('test/resources/black_white.png', impl="bitImageColumn")
+    assert(instance.output == b'\x1b3\x10\x1b*!\x02\x00\x80\x00\x00\x80\x00\x00\x0a\x1b2')
+
+
+def test_bit_image_colfmt_transparent():
+    """
+    Test printing black/transparent bit image (column format)
+    """
+    instance = printer.Dummy()
+    instance.image('test/resources/black_transparent.png', impl="bitImageColumn")
+    assert(instance.output == b'\x1b3\x10\x1b*!\x02\x00\x80\x00\x00\x80\x00\x00\x0a\x1b2')
+
+
+# Graphics print
+def test_graphics_black():
+    """
+    Test printing solid black graphics
+    """
+    instance = printer.Dummy()
+    instance.image('test/resources/canvas_black.png', impl="graphics")
+    assert(instance.output == b'\x1d(L\x0b\x000p0\x01\x011\x01\x00\x01\x00\x80\x1d(L\x02\x0002')
+
+
+def test_graphics_white():
+    """
+    Test printing solid white graphics
+    """
+    instance = printer.Dummy()
+    instance.image('test/resources/canvas_white.png', impl="graphics")
+    assert(instance.output == b'\x1d(L\x0b\x000p0\x01\x011\x01\x00\x01\x00\x00\x1d(L\x02\x0002')
+
+
+def test_graphics_both():
+    """
+    Test printing black/white graphics
+    """
+    instance = printer.Dummy()
+    instance.image('test/resources/black_white.png', impl="graphics")
+    assert(instance.output == b'\x1d(L\x0c\x000p0\x01\x011\x02\x00\x02\x00\xc0\x00\x1d(L\x02\x0002')
+
+
+def test_graphics_transparent():
+    """
+    Test printing black/transparent graphics
+    """
+    instance = printer.Dummy()
+    instance.image('test/resources/black_transparent.png', impl="graphics")
+    assert(instance.output == b'\x1d(L\x0c\x000p0\x01\x011\x02\x00\x02\x00\xc0\x00\x1d(L\x02\x0002')
+
+
+def test_large_graphics():
+    """
+    Test whether 'large' graphics that induce a fragmentation are handled correctly.
+    """
+    instance = printer.Dummy()
+    instance.image('test/resources/black_white.png', impl="bitImageRaster", fragment_height=1)
+    assert(instance.output == b'\x1dv0\x00\x01\x00\x01\x00\xc0\x1dv0\x00\x01\x00\x01\x00\x00')

test/test_function_panel_button.py

@@ -0,0 +1,54 @@
+#!/usr/bin/python
+"""tests for panel button function
+
+:author: `Patrick Kanzler <patrick.kanzler@fablab.fau.de>`_
+:organization: `python-escpos <https://github.com/python-escpos>`_
+:copyright: Copyright (c) 2016 `python-escpos <https://github.com/python-escpos>`_
+:license: MIT
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+from nose.tools import with_setup
+
+import escpos.printer as printer
+import os
+
+devfile = 'testfile'
+
+
+def setup_testfile():
+    """create a testfile as devfile"""
+    fhandle = open(devfile, 'a')
+    try:
+        os.utime(devfile, None)
+    finally:
+        fhandle.close()
+
+
+def teardown_testfile():
+    """destroy testfile again"""
+    os.remove(devfile)
+
+
+@with_setup(setup_testfile, teardown_testfile)
+def test_function_panel_button_on():
+    """test the panel button function (enabling) by comparing output"""
+    instance = printer.File(devfile=devfile)
+    instance.panel_buttons()
+    instance.flush()
+    with open(devfile, "rb") as f:
+        assert(f.read() == b'\x1B\x63\x35\x00')
+
+
+@with_setup(setup_testfile, teardown_testfile)
+def test_function_panel_button_off():
+    """test the panel button function (disabling) by comparing output"""
+    instance = printer.File(devfile=devfile)
+    instance.panel_buttons(False)
+    instance.flush()
+    with open(devfile, "rb") as f:
+        assert(f.read() == b'\x1B\x63\x35\x01')

test/test_function_qr_native.py

@@ -0,0 +1,99 @@
+#!/usr/bin/python
+"""test native QR code printing
+
+:author: `Michael Billington <michael.billington@gmail.com>`_
+:organization: `python-escpos <https://github.com/python-escpos>`_
+:copyright: Copyright (c) 2016 `Michael Billington <michael.billington@gmail.com>`_
+:license: MIT
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+from nose.tools import raises
+import escpos.printer as printer
+from escpos.constants import QR_ECLEVEL_H, QR_MODEL_1
+
+
+def test_defaults():
+    """Test QR code with defaults"""
+    instance = printer.Dummy()
+    instance.qr("1234", native=True)
+    expected = b'\x1d(k\x04\x001A2\x00\x1d(k\x03\x001C\x03\x1d(k\x03\x001E0\x1d' \
+        b'(k\x07\x001P01234\x1d(k\x03\x001Q0'
+    assert(instance.output == expected)
+
+
+def test_empty():
+    """Test QR printing blank code"""
+    instance = printer.Dummy()
+    instance.qr("", native=True)
+    assert(instance.output == b'')
+
+
+def test_ec():
+    """Test QR error correction setting"""
+    instance = printer.Dummy()
+    instance.qr("1234", native=True, ec=QR_ECLEVEL_H)
+    expected = b'\x1d(k\x04\x001A2\x00\x1d(k\x03\x001C\x03\x1d(k\x03\x001E3\x1d' \
+        b'(k\x07\x001P01234\x1d(k\x03\x001Q0'
+    assert(instance.output == expected)
+
+
+def test_size():
+    """Test QR box size"""
+    instance = printer.Dummy()
+    instance.qr("1234", native=True, size=7)
+    expected = b'\x1d(k\x04\x001A2\x00\x1d(k\x03\x001C\x07\x1d(k\x03\x001E0\x1d' \
+        b'(k\x07\x001P01234\x1d(k\x03\x001Q0'
+    assert(instance.output == expected)
+
+
+def test_model():
+    """Test QR model"""
+    instance = printer.Dummy()
+    instance.qr("1234", native=True, model=QR_MODEL_1)
+    expected = b'\x1d(k\x04\x001A1\x00\x1d(k\x03\x001C\x03\x1d(k\x03\x001E0\x1d' \
+        b'(k\x07\x001P01234\x1d(k\x03\x001Q0'
+    assert(instance.output == expected)
+
+
+@raises(ValueError)
+def test_invalid_ec():
+    """Test invalid QR error correction"""
+    instance = printer.Dummy()
+    instance.qr("1234", native=True, ec=-1)
+
+
+@raises(ValueError)
+def test_invalid_size():
+    """Test invalid QR size"""
+    instance = printer.Dummy()
+    instance.qr("1234", native=True, size=0)
+
+
+@raises(ValueError)
+def test_invalid_model():
+    """Test invalid QR model"""
+    instance = printer.Dummy()
+    instance.qr("1234", native=True, model="Hello")
+
+
+def test_image():
+    """Test QR as image"""
+    instance = printer.Dummy()
+    instance.qr("1", native=False, size=1)
+    print(instance.output)
+    expected = b'\x1dv0\x00\x03\x00\x17\x00\x00\x00\x00\x7f]\xfcA\x19\x04]it]et' \
+        b']ItA=\x04\x7fU\xfc\x00\x0c\x00y~t4\x7f =\xa84j\xd9\xf0\x05\xd4\x90\x00' \
+        b'i(\x7f<\xa8A \xd8]\'\xc4]y\xf8]E\x80Ar\x94\x7fR@\x00\x00\x00'
+    assert(instance.output == expected)
+
+
+@raises(ValueError)
+def test_image_invalid_model():
+    """Test unsupported QR model as image"""
+    instance = printer.Dummy()
+    instance.qr("1234", native=False, model=QR_MODEL_1)

test/test_function_qr_non-native.py

@@ -0,0 +1,32 @@
+#!/usr/bin/python
+#  -*- coding: utf-8 -*-
+"""tests for the non-native part of qr()
+
+:author: `Patrick Kanzler <patrick.kanzler@fablab.fau.de>`_
+:organization: `python-escpos <https://github.com/python-escpos>`_
+:copyright: Copyright (c) 2016 `python-escpos <https://github.com/python-escpos>`_
+:license: MIT
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import mock
+
+from escpos.printer import Dummy
+from PIL import Image
+
+
+@mock.patch('escpos.printer.Dummy.image', spec=Dummy)
+def test_type_of_object_passed_to_image_function(img_function):
+    """
+    Test the type of object that is passed to the image function during non-native qr-printing.
+
+    The type should be PIL.Image
+    """
+    d = Dummy()
+    d.qr("LoremIpsum")
+    args, kwargs = img_function.call_args
+    assert isinstance(args[0], Image.Image)

test/test_function_text.py

@@ -0,0 +1,41 @@
+#!/usr/bin/python
+"""tests for the text printing function
+
+:author: `Patrick Kanzler <patrick.kanzler@fablab.fau.de>`_
+:organization: `python-escpos <https://github.com/python-escpos>`_
+:copyright: Copyright (c) 2016 `python-escpos <https://github.com/python-escpos>`_
+:license: MIT
+"""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import pytest
+import mock
+from hypothesis import given, assume
+import hypothesis.strategies as st
+from escpos.printer import Dummy
+
+
+def get_printer():
+    return Dummy(magic_encode_args={'disabled': True, 'encoding': 'CP437'})
+
+
+@given(text=st.text())
+def test_text(text):
+    """Test that text() calls the MagicEncode object.
+    """
+    instance = get_printer()
+    instance.magic.write = mock.Mock()
+    instance.text(text)
+    instance.magic.write.assert_called_with(text)
+
+
+def test_block_text():
+    printer = get_printer()
+    printer.block_text(
+        "All the presidents men were eating falafel for breakfast.", font='a')
+    assert printer.output == \
+        b'All the presidents men were eating falafel\nfor breakfast.'

test/test_functions.py

@@ -0,0 +1,26 @@
+from nose.tools import assert_raises
+from escpos.printer import Dummy
+
+
+def test_line_spacing_code_gen():
+    printer = Dummy()
+    printer.line_spacing(10)
+    assert printer.output == b'\x1b3\n'
+
+
+def test_line_spacing_rest():
+    printer = Dummy()
+    printer.line_spacing()
+    assert printer.output == b'\x1b2'
+
+
+def test_line_spacing_error_handling():
+    printer = Dummy()
+    with assert_raises(ValueError):
+        printer.line_spacing(99, divisor=44)
+    with assert_raises(ValueError):
+        printer.line_spacing(divisor=80, spacing=86)
+    with assert_raises(ValueError):
+        printer.line_spacing(divisor=360, spacing=256)
+    with assert_raises(ValueError):
+        printer.line_spacing(divisor=180, spacing=256)

test/test_image.py

@@ -0,0 +1,71 @@
+#!/usr/bin/env python
+""" Image tests- Check that images from different source formats are correctly
+converted to ESC/POS column & raster formats.
+
+:author: `Michael Billington <michael.billington@gmail.com>`_
+:organization: `python-escpos <https://github.com/python-escpos>`_
+:copyright: Copyright (c) 2016 `Michael Billington <michael.billington@gmail.com>`_
+:license: MIT
+"""
+
+from escpos.image import EscposImage
+
+
+def test_image_black():
+    """
+    Test rendering solid black image
+    """
+    for img_format in ['png', 'jpg', 'gif']:
+        _load_and_check_img('canvas_black.' + img_format, 1, 1, b'\x80', [b'\x80'])
+
+
+def test_image_black_transparent():
+    """
+    Test rendering black/transparent image
+    """
+    for img_format in ['png', 'gif']:
+        _load_and_check_img('black_transparent.' + img_format, 2, 2, b'\xc0\x00', [b'\x80\x80'])
+
+
+def test_image_black_white():
+    """
+    Test rendering black/white image
+    """
+    for img_format in ['png', 'jpg', 'gif']:
+        _load_and_check_img('black_white.' + img_format, 2, 2, b'\xc0\x00', [b'\x80\x80'])
+
+
+def test_image_white():
+    """
+    Test rendering solid white image
+    """
+    for img_format in ['png', 'jpg', 'gif']:
+        _load_and_check_img('canvas_white.' + img_format, 1, 1, b'\x00', [b'\x00'])
+
+
+def test_split():
+    """
+    test whether the split-function works as expected
+    """
+    im = EscposImage('test/resources/black_white.png')
+    (upper_part, lower_part) = im.split(1)
+    upper_part = EscposImage(upper_part)
+    lower_part = EscposImage(lower_part)
+    assert(upper_part.width == lower_part.width == 2)
+    assert(upper_part.height == lower_part.height == 1)
+    assert(upper_part.to_raster_format() == b'\xc0')
+    assert(lower_part.to_raster_format() == b'\x00')
+
+
+def _load_and_check_img(filename, width_expected, height_expected, raster_format_expected, column_format_expected):
+    """
+    Load an image, and test whether raster & column formatted output, sizes, etc match expectations.
+    """
+    im = EscposImage('test/resources/' + filename)
+    assert(im.width == width_expected)
+    assert(im.height == height_expected)
+    assert(im.to_raster_format() == raster_format_expected)
+    i = 0 
+    for row in im.to_column_format(False):
+        assert(row == column_format_expected[i])
+        i += 1