other minor problems

release v3.0a4

.coveragerc

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

.gitignore

@@ -5,6 +5,7 @@
 $~
 .idea/
 .directory
+.cache/
 
 # temporary data
 temp
@@ -19,6 +20,12 @@ dist/
 .coverage
 src/escpos/version.py
 .hypothesis
+.pytest_cache/
 
 # testing temporary directories
 test/test-cli-output/
+
+# vim swap files
+*.swp
+*.swn
+*.swo

.gitmodules

@@ -0,0 +1,4 @@
+[submodule "capabilities-data"]
+	path = capabilities-data
+	url = https://github.com/receipt-print-hq/escpos-printer-db.git
+	branch = master

.mailmap

@@ -0,0 +1,14 @@
+<dev@pkanzler.de>                                    <patrick.kanzler@fablab.fau.de>
+<manpaz@gmail.com>                                   <manpaz@bashlinux.com>
+Manuel F Martinez <manpaz@gmail.com>                 manpaz <manpaz@bashlinux.com>
+<emailofdavis@gmail.com>                             <davis.goglin@oregonicecream.com>
+Davis Goglin <emailofdavis@gmail.com>                davisgoglin <emailofdavis@gmail.com>
+Michael Billington <michael.billington@gmail.com>    Michael <michael.billington@gmail.com>
+Cody (Quantified Code Bot) <cody@quantifiedcode.com> Cody <cody@quantifiedcode.com>
+Renato Lorenzi <renato.lorenzi@senior.com.br>        Renato.Lorenzi <renato.lorenzi@senior.com.br>
+Ahmed Tahri <nyuubi.10@gmail.com>                    TAHRI Ahmed <nyuubi.10@gmail.com>
+Michael Elsdörfer <michael@elsdoerfer.com>           Michael Elsdörfer <michael@elsdoerfer.info>
+Juanmi Taboada <juanmi@juanmitaboada.com>            Juanmi Taboada <juanmi@juanmitaboada.com>
+csoft2k <csoft2k@hotmail.com>
+Sergio Pulgarin <sergio.pulgarin@gmail.com>
+reck31 <rakesh.gunduka@gmail.com>

.travis.yml

@@ -1,36 +1,66 @@
 language: python
 sudo: false
 cache: pip
+git:
+  depth: 100000
 addons:
   apt:
     packages:
       - graphviz
+env:
+  global:
+    - ESCPOS_CAPABILITIES_FILE=/home/travis/build/python-escpos/python-escpos/capabilities-data/dist/capabilities.json
 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: 3.5-dev
-      env: TOXENV=py35
-    - python: nightly
+    - python: 3.6
       env: TOXENV=py36
+    - python: 3.6-dev
+      env: TOXENV=py36
+    - python: 3.7-dev
+      env: TOXENV=py37
+    - 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: 3.5-dev
+    - python: 3.6-dev
+    - python: 3.7-dev
     - python: nightly
     - python: pypy3
 before_install:
-    - pip install tox codecov
+    - pip install tox codecov 'sphinx>=1.5.1'
+    - ./doc/generate_authors.sh --check
 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 = "3.6"

AUTHORS

@@ -0,0 +1,33 @@
+Ahmed Tahri
+Asuki Kono
+belono
+Christoph Heuel
+Cody (Quantified Code Bot)
+csoft2k
+Curtis // mashedkeyboard
+Davis Goglin
+Dean Rispin
+Dmytro Katyukha
+Hark
+Joel Lehtonen
+kennedy
+Kristi
+ldos
+Lucy Linder
+Manuel F Martinez
+Michael Billington
+Michael Elsdörfer
+mrwunderbar666
+Nathan Bookham
+Patrick Kanzler
+primax79
+Qian Linfeng
+reck31
+Renato Lorenzi
+Romain Porte
+Sam Cheng
+Sergio Pulgarin
+Stephan Sokolow
+Thijs Triemstra
+Thomas van den Berg
+ysuolmai

CHANGELOG.rst

@@ -1,6 +1,168 @@
 *********
 Changelog
 *********
+2018-05-15 - Version 3.0a4 - "Kakistocrat"
+------------------------------------------
+This release is the fifth alpha release of the new version 3.0. Please
+be aware that the API will still change until v3.0 is released.
+
+changes
+^^^^^^^
+- raise exception when TypeError occurs in cashdraw (#268)
+- Feature/clear content in dummy printer (#271)
+- fix is_online() (#282)
+- improve documentation
+- Modified submodule to always pull from master branch (#283)
+- parameter for implementation of nonnative qrcode (#289)
+- improve platform independence (#296)
+
+contributors
+^^^^^^^^^^^^
+- Christoph Heuel
+- Patrick Kanzler
+- kennedy
+- primax79
+- reck31
+- Thijs Triemstra
+
+2017-10-08 - Version 3.0a3 - "Just Testing"
+-------------------------------------------
+This release is the fourth alpha release of the new version 3.0. Please
+be aware that the API will still change until v3.0 is released.
+
+changes
+^^^^^^^
+- minor changes in documentation, tests and examples
+- pickle capabilities for faster startup
+- first implementation of centering images and QR
+- check barcodes based on regex
+
+contributors
+^^^^^^^^^^^^
+- Patrick Kanzler
+- Lucy Linder
+- Romain Porte
+- Sergio Pulgarin
+
+2017-08-04 - Version 3.0a2 - "It's My Party And I'll Sing If I Want To"
+-----------------------------------------------------------------------
+This release is the third alpha release of the new version 3.0. Please
+be aware that the API will still change until v3.0 is released.
+
+changes
+^^^^^^^
+- refactor of the set-method
+- preliminary support of POS "line display" printing
+- improvement of tests
+- added ImageWidthError
+- list authors in repository
+- add support for software-based barcode-rendering
+- fix SerialException when trying to close device on __del__
+- added the DLE EOT querying command for USB and Serial
+- ensure QR codes have a large enough border
+- make feed for cut optional
+- fix the behavior of horizontal tabs
+- added test script for hard an soft barcodes
+- implemented paper sensor querying command
+- added weather forecast example script
+- added a method for simpler newlines
+
+contributors
+^^^^^^^^^^^^
+- csoft2k
+- Patrick Kanzler
+- mrwunderbar666
+- Romain Porte
+- Ahmed Tahri
+
+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"
 --------------------------------------------------

CONTRIBUTING.rst

@@ -12,6 +12,16 @@ The pull requests and issues will be prefilled with templates. Please fill in yo
 This project uses `semantic versioning <http://semver.org/>`_ and tries to adhere to the proposed rules as
 well as possible.
 
+Author-list
+-----------
+
+This project keeps a list of authors. This can be auto-generated by calling `./doc/generate-authors.sh`.
+When contributing the first time, please include a commit with the output of this script in place.
+Otherwise the integration-check will fail.
+
+When you change your username or mail-address, please also update the `.mailmap` and the authors-list.
+You can find a good documentation on the mapping-feature in the `documentation of git-shortlog <https://git-scm.com/docs/git-shortlog#_mapping_authors>`_.
+
 Style-Guide
 -----------
 
@@ -29,7 +39,7 @@ of every file of code:
   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
@@ -38,15 +48,16 @@ Often you can achieve compatibility quite easily with a tool from the `six`-pack
 
 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.
+The entire codebase adheres to the rules of PEP8.
+These rules are enforced by running `flake8` in the integration-checks.
+Please adhere to these rules as your contribution can only be merged if the check succeeds.
+You can use flake8 or similar tools locally in order to check your code.
+Apart from that the travis-log and the check by Landscape 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 a released version
-of the package.
+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

COPYING

@@ -1,674 +0,0 @@
-                    GNU GENERAL PUBLIC LICENSE
-                       Version 3, 29 June 2007
-
- Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-                            Preamble
-
-  The GNU General Public License is a free, copyleft license for
-software and other kinds of works.
-
-  The licenses for most software and other practical works are designed
-to take away your freedom to share and change the works.  By contrast,
-the GNU General Public License is intended to guarantee your freedom to
-share and change all versions of a program--to make sure it remains free
-software for all its users.  We, the Free Software Foundation, use the
-GNU General Public License for most of our software; it applies also to
-any other work released this way by its authors.  You can apply it to
-your programs, too.
-
-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-them if you wish), that you receive source code or can get it if you
-want it, that you can change the software or use pieces of it in new
-free programs, and that you know you can do these things.
-
-  To protect your rights, we need to prevent others from denying you
-these rights or asking you to surrender the rights.  Therefore, you have
-certain responsibilities if you distribute copies of the software, or if
-you modify it: responsibilities to respect the freedom of others.
-
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-
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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.in

@@ -1,8 +1,10 @@
 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

README.rst

@@ -6,10 +6,6 @@ python-escpos - Python library to manipulate ESC/POS Printers
     :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
@@ -37,15 +33,21 @@ 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
+* `pyusb <https://github.com/walac/pyusb>`_ for USB-printers
+* `Pillow <https://github.com/python-pillow/Pillow>`_ for image printing
+* `qrcode <https://github.com/lincolnloop/python-qrcode>`_ for the generation of QR-codes
+* `pyserial <https://github.com/pyserial/pyserial>`_ for serial printers
+* `viivakoodi <https://github.com/kxepal/viivakoodi>`_ for the generation of barcodes
 
 Documentation and Usage
 -----------------------
@@ -54,18 +56,27 @@ The basic usage is:
 
 .. code:: python
 
-    from escpos import *
+    from escpos.printer import Usb
 
-    """ Seiko Epson Corp. Receipt Printer M129 Definitions (EPSON TM-T88IV) """
-    Epson = escpos.Escpos(0x04b8,0x0202,0)
-    Epson.text("Hello World\n")
-    Epson.image("logo.gif")
-    Epson.barcode('1324354657687','EAN13',64,2,'','')
-    Epson.cut()
+    """ 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.
+This project is open for any contribution! Please see `CONTRIBUTING.rst <http://python-escpos.readthedocs.io/en/latest/dev/contributing.html>`_ for more information.
+
+
+Disclaimer
+----------
+
+None of the vendors cited in this project agree or endorse any of the patterns or implementations.
+Its names are used only to maintain context.
+
+

codecov.yml

@@ -7,10 +7,6 @@ coverage:
       default:  # status context
         target: auto
         threshold: "1%"
-    patch:
-      default:
-        target: auto
-        threshold: "1%"
   range: "60...100"
 
 comment: off

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/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/generate_authors.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+GENLIST=$(git shortlog -s -n | cut -f2 | sort -f)
+AUTHORSFILE="$(dirname $0)/../AUTHORS"
+TEMPAUTHORSFILE="/tmp/python-escpos-authorsfile"
+
+if [ "$#" -eq 1 ]
+    then
+        echo "$GENLIST">$TEMPAUTHORSFILE
+	echo "\nAuthorsfile in version control:\n"
+	cat $AUTHORSFILE
+	echo "\nNew authorsfile:\n"
+	cat $TEMPAUTHORSFILE
+	echo "\nUsing diff on files...\n"
+        diff -q --from-file $AUTHORSFILE $TEMPAUTHORSFILE
+    else
+	echo "$GENLIST">$AUTHORSFILE
+fi
+

doc/index.rst

@@ -18,6 +18,7 @@ Content
    user/raspi
    user/todo
    user/usage
+   user/barcode
 
 .. toctree::
    :maxdepth: 1
@@ -34,8 +35,13 @@ Content
    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

@@ -4,3 +4,5 @@ qrcode>=4.0
 pyserial
 sphinx-rtd-theme
 setuptools-scm
+docutils>=0.12
+viivakoodi

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/methods.rst

@@ -1,141 +1,17 @@
 *******
 Methods
 *******
-
-.. note:: **TODO** Merge this page with the API-description. (Make the API-description more pretty and then
-          replace this with 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 for function type A:
-   
-  * UPC-A
-  * UPC-E
-  * EAN13
-  * EAN8
-  * CODE39
-  * ITF
-  * NW7
-
-  And for function type B:
-
-  * Any type above
-  * CODE93
-  * CODE128
-  * GS1-128
-  * GS1 DataBar Omnidirectional
-  * GS1 DataBar Truncated
-  * GS1 DataBar Limited
-  * GS1 DataBar Expanded
-
-
-* ``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
-
-*  ``fuction_type`` chooses between ESCPOS function type A or B. A is default, B has more barcode options. Choose which one based upon your printer support and require barcode.
-
-  * A
-  * B > *Default* A
-
-* Raises ``BarcodeTypeError``, ``BarcodeSizeError``, ``BarcodeCodeError`` exceptions.
-    
-text("text")
-^^^^^^^^^^^^
-
-Prints raw text. Raises ``TextError`` exception.
-
-set("align", "font", "type", width, height, invert, smooth, flip)
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-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
-* ``invert`` is a boolean value, True enables white on black printing. *Default*: False
-* ``smooth`` is a boolean value, True enables text smoothing. *Default*: False
-* ``flip`` is a boolean value, True enables upside-down text. *Default*: False
-
-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

@@ -1,53 +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)
-^^^^^^^^^^^^^^^^^^^^^
-
-Based on socket
-* ``host`` is an alphanumeric host name, could be either DNS host name or IP address.
-* ``port`` to write to (default = 9100)
-
-Troubleshooting:
+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:
 
-::
-    echo "OK\n" | nc IPADDRESS 9100
-    # the port number is often 9100
+    ::
+
+            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("file\_name")
-^^^^^^^^^^^^^^^^^^
+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

@@ -2,10 +2,9 @@
 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
@@ -14,60 +13,30 @@ following instructions should works fine on your raspberry distro.
 
 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/usage.rst

@@ -1,6 +1,7 @@
 *****
 Usage
 *****
+:Last Reviewed: 2017-06-10
 
 Define your printer
 -------------------
@@ -8,12 +9,11 @@ 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 +37,7 @@ 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 +47,9 @@ 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**
 
@@ -67,33 +67,33 @@ IP by DHCP or you set it manually.
 
 ::
 
-    Epson = printer.Network("192.168.1.99")
+    Epson = printer.Network('192.168.1.99')
 
 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**
 
 ::
 
-    Epson = printer.Serial("/dev/tty0")
+    Epson = printer.Serial('/dev/tty0')
 
 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.
 
 ::
 
-    Epson = printer.File("/dev/usb/lp1")
+    Epson = printer.File('/dev/usb/lp1')
 
 The default is "/dev/usb/lp0", so if the printer is located on that
 node, then you don't necessary need to pass the node name.
@@ -101,8 +101,8 @@ 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.
 
 ::
 
@@ -110,11 +110,11 @@ on USB interface
     """ Seiko Epson Corp. Receipt Printer M129 Definitions (EPSON TM-T88IV) """
     Epson = printer.Usb(0x04b8,0x0202)
     # Print text
-    Epson.text("Hello World\n")
+    Epson.text('Hello World\n')
     # Print image
-    Epson.image("logo.gif")
+    Epson.image('logo.gif')
     # Print QR Code
-    Epson.qr("You can readme from your smartphone")
+    Epson.qr('You can readme from your smartphone')
     # Print barcode
     Epson.barcode('1324354657687','EAN13',64,2,'','')
     # Cut paper
@@ -125,33 +125,32 @@ Configuration File
 
 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
-programically.
+programmatically.
 
-The default configuration file is named ``config.yaml``. It's in the YAML
+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
+    $HOME/.config/python-escpos/config.yaml
 
 If you aren't sure, run::
 
-        from escpos import config
-        c = config.Config()
-        c.load()
+    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
-search to the ``load()`` method.
+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::
 
-To load the configured pritner, run::
-
-        from escpos import config
-        c = config.Config()
-        printer = c.printer()
+    from escpos import config
+    c = config.Config()
+    printer = c.printer()
 
 
 The printer section
@@ -159,23 +158,48 @@ 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
+The only required paramter is ``type``. The value of this has to be one of the
 printers defined in :doc:`/user/printers`.
 
-The rest of the parameters are whatever you want to pass to the printer.
+The rest of the given parameters will be passed on to the initialization of the printer class.
+Use these to overwrite the default values as specified in :doc:`/user/printers`.
+This implies that the parameters have to match the parameter-names of the respective printer class.
 
 An example file printer::
 
-        printer:
-                type: File
-                devfile: /dev/someprinter
+    printer:
+            type: File
+            devfile: /dev/someprinter
 
 And for a network printer::
 
-        printer:
-                type: network
-                host: 127.0.0.1
-                port: 9000
+    printer:
+            type: Network
+            host: 127.0.0.1
+            port: 9000
+
+An USB-printer could be defined by::
+
+    printer:
+            type: Usb
+            idVendor: 0x1234
+            idProduct: 0x5678
+            in_ep: 0x66
+            out_ep: 0x01
+
+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
 --------------------------------------
@@ -190,7 +214,7 @@ advantage of the fact that `_raw()` accepts binary strings.)
     from escpos import printer
     p = printer.Serial()  # adapt this to your printer model
 
-    file = open("binary-blob.bin", "rb")  # read in the file containing your commands in binary-mode
+    file = open('binary-blob.bin', 'rb')  # read in the file containing your commands in binary-mode
     data = file.read()
     file.close()
 
@@ -204,19 +228,60 @@ 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>`_
 
-How to update your code for USB printers
-----------------------------------------
+Advanced Usage: change capabilities-profile
+-------------------------------------------
 
-Old code
+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.
 
-    Epson = escpos.Escpos(0x04b8,0x0202,0)
+.. code-block:: shell
 
-New code
+   # 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.

examples/barcodes.py

@@ -0,0 +1,17 @@
+#  -*- coding: utf-8 -*-
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+from escpos.printer import Usb
+
+
+# Adapt to your needs
+p = Usb(0x0416, 0x5011, profile='POS-5890')
+
+# Print software and then hardware barcode with the same content
+p.soft_barcode('code39', '123456')
+p.text('\n')
+p.text('\n')
+p.barcode('123456', 'CODE39')

examples/codepage_tables.py

@@ -0,0 +1,67 @@
+#  -*- coding: utf-8 -*-
+"""Prints code page tables.
+"""
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import sys
+
+from escpos import printer
+from escpos.constants import CODEPAGE_CHANGE, CTL_CR, CTL_FF, CTL_HT, CTL_LF, CTL_VT, ESC
+
+import six
+
+
+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(font='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(font='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()

examples/graphics/climacons/readme.md

@@ -0,0 +1,10 @@
+# Climacons by Adam Whitcroft
+
+75 climatically categorised pictographs for web and UI design by [@adamwhitcroft](http://www.twitter.com/#!/adamwhitcroft).
+
+Visit the [Climacons](http://adamwhitcroft.com/climacons/) website for more information.
+
+Visit [Adam Whitcroft on GitHub](https://github.com/AdamWhitcroft)
+
+## License
+You are free to use any of the Climacons Icons (the "icons") in any personal or commercial work without obligation of payment (monetary or otherwise) or attribution, however a credit for the work would be appreciated. **Do not** redistribute or sell and **do not** claim creative credit. Intellectual property rights are not transferred with the download of the icons.

examples/qr_code.py

@@ -0,0 +1,25 @@
+#  -*- coding: utf-8 -*-
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import sys
+
+from escpos.printer import Usb
+
+
+def usage():
+    print('usage: qr_code.py <content>')
+
+
+if __name__ == '__main__':
+    if len(sys.argv) != 2:
+        usage()
+        sys.exit(1)
+
+    content = sys.argv[1]
+
+    # Adapt to your needs
+    p = Usb(0x0416, 0x5011, profile='POS-5890')
+    p.qr(content, center=True)

examples/software_barcode.py

@@ -0,0 +1,15 @@
+#  -*- coding: utf-8 -*-
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+from escpos.printer import Usb
+
+
+# Adapt to your needs
+p = Usb(0x0416, 0x5011, profile='POS-5890')
+
+# Some software barcodes
+p.soft_barcode('code128', 'Hello')
+p.soft_barcode('code39', '123456')

examples/weather.py

@@ -0,0 +1,130 @@
+#!/usr/bin/env python
+#  -*- coding: utf-8 -*-
+
+# Adapted script from Adafruit
+# Weather forecast for Raspberry Pi w/Adafruit Mini Thermal Printer.
+# Retrieves data from DarkSky.net's API, prints current conditions and
+# forecasts for next two days.
+# Weather example using nice bitmaps.
+# Written by Adafruit Industries.  MIT license.
+# Adapted and enhanced for escpos library by MrWunderbar666
+
+# Icons taken from http://adamwhitcroft.com/climacons/
+# Check out his github: https://github.com/AdamWhitcroft/climacons
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import calendar
+import json
+import os
+import time
+import urllib
+from datetime import datetime
+
+from escpos.printer import Usb
+
+""" Setting up the main pathing """
+this_dir, this_filename = os.path.split(__file__)
+GRAPHICS_PATH = os.path.join(this_dir, 'graphics/climacons/')
+
+# Adapt to your needs
+printer = Usb(0x0416, 0x5011, profile='POS-5890')
+
+# You can get your API Key on www.darksky.net and register a dev account.
+# Technically you can use any other weather service, of course :)
+API_KEY = 'YOUR API KEY'
+
+LAT = '22.345490'       # Your Location
+LONG = '114.189945'     # Your Location
+
+
+def forecast_icon(idx):
+    icon = data['daily']['data'][idx]['icon']
+    image = GRAPHICS_PATH + icon + '.png'
+    return image
+
+
+# Dumps one forecast line to the printer
+def forecast(idx):
+    date = datetime.fromtimestamp(int(data['daily']['data'][idx]['time']))
+    day = calendar.day_name[date.weekday()]
+    lo = data['daily']['data'][idx]['temperatureMin']
+    hi = data['daily']['data'][idx]['temperatureMax']
+    cond = data['daily']['data'][idx]['summary']
+    print(date)
+    print(day)
+    print(lo)
+    print(hi)
+    print(cond)
+    time.sleep(1)
+    printer.set(
+        font='a',
+        height=2,
+        align='left',
+        bold=False,
+        double_height=False)
+    printer.text(day + ' \n ')
+    time.sleep(5)           # Sleep to prevent printer buffer overflow
+    printer.text('\n')
+    printer.image(forecast_icon(idx))
+    printer.text('low ' + str(lo))
+    printer.text(deg)
+    printer.text('\n')
+    printer.text(' high ' + str(hi))
+    printer.text(deg)
+    printer.text('\n')
+    # take care of pesky unicode dash
+    printer.text(cond.replace(u'\u2013', '-').encode('utf-8'))
+    printer.text('\n \n')
+
+
+def icon():
+    icon = data['currently']['icon']
+    image = GRAPHICS_PATH + icon + '.png'
+    return image
+
+
+deg = ' C'      # Degree symbol on thermal printer, need to find a better way to use a proper degree symbol
+
+# if you want Fahrenheit change units= to 'us'
+url = 'https://api.darksky.net/forecast/' + API_KEY + '/' + LAT + ',' + LONG + \
+    '?exclude=[alerts,minutely,hourly,flags]&units=si'  # change last bit to 'us' for Fahrenheit
+response = urllib.urlopen(url)
+data = json.loads(response.read())
+
+printer.print_and_feed(n=1)
+printer.control('LF')
+printer.set(font='a', height=2, align='center', bold=True, double_height=True)
+printer.text('Weather Forecast')
+printer.text('\n')
+printer.set(align='center')
+
+
+# Print current conditions
+printer.set(font='a', height=2, align='center', bold=True, double_height=False)
+printer.text('Current conditions: \n')
+printer.image(icon())
+printer.text('\n')
+
+printer.set(font='a', height=2, align='left', bold=False, double_height=False)
+temp = data['currently']['temperature']
+cond = data['currently']['summary']
+printer.text(temp)
+printer.text(' ')
+printer.text(deg)
+printer.text(' ')
+printer.text('\n')
+printer.text('Sky: ' + cond)
+printer.text('\n')
+printer.text('\n')
+
+# Print forecast
+printer.set(font='a', height=2, align='center', bold=True, double_height=False)
+printer.text('Forecast: \n')
+forecast(0)
+forecast(1)
+printer.cut()
+printer.control('LF')

readthedocs.yml

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

setup.cfg

@@ -5,3 +5,17 @@ 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
+accept-encoding = utf-8, utf-16
+require-code = True
+# FI12 __future__ import "with_statement" missing
+# FI15 __future__ import "generator_stop" missing
+# FI16 __future__ import "nested_scopes" missing
+# FI17 __future__ import "generators" missing
+# FI5x __future__ import "xxx" present
+# I101 Imported names are in the wrong order.
+ignore = FI12,FI15,FI16,FI17,FI5, I101
+copyright-check = True

setup.py

@@ -1,13 +1,19 @@
-#!/usr/bin/python
+#!/usr/bin/env python
+#  -*- coding: utf-8 -*-
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+# from __future__ import unicode_literals
 
 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")
+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.
@@ -19,41 +25,16 @@ def read(fname):
     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}'
-
 """
 
 
@@ -66,13 +47,12 @@ setup(
     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',
-    bugtrack_url='https://github.com/python-escpos/python-escpos/issues',
-    license='GNU GPL v3',
+    license='MIT',
     long_description=read('README.rst'),
     author='Manuel F Martinez and others',
     author_email='manpaz@bashlinux.com',
     maintainer='Patrick Kanzler',
-    maintainer_email='patrick.kanzler@fablab.fau.de',
+    maintainer_email='dev@pkanzler.de',
     keywords=[
         'ESC/POS',
         'thermoprinter',
@@ -81,22 +61,24 @@ setup(
         'receipt,',
     ],
     platforms='any',
-    package_dir={"": "src"},
-    packages=find_packages(where="src", exclude=["tests", "tests.*"]),
-    package_data={'': ['COPYING']},
+    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 :: 4 - Beta',
         'Environment :: Console',
         'Intended Audience :: Developers',
-        'License :: OSI Approved :: GNU General Public License v3 (GPLv3)',
+        'License :: OSI Approved :: MIT License',
         'Operating System :: OS Independent',
         'Programming Language :: Python',
         '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 :: 3.6',
+        'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: Implementation :: CPython',
         'Programming Language :: Python :: Implementation :: PyPy',
         'Topic :: Software Development :: Libraries :: Python Modules',
@@ -109,15 +91,27 @@ setup(
         'pyserial',
         'six',
         'appdirs',
-        'pyyaml',
+        'PyYAML',
         'argparse',
         'argcomplete',
+        'future',
+        'viivakoodi>=0.8'
     ],
     setup_requires=[
         'setuptools_scm',
     ],
-    tests_require=['tox', 'nose', 'scripttest', 'mock', 'hypothesis'],
-    cmdclass={'test': Tox},
+    tests_require=[
+        'jaconv',
+        'tox',
+        'pytest!=3.2.0,!=3.3.0',
+        'pytest-cov',
+        'pytest-mock',
+        'nose',
+        'scripttest',
+        'mock',
+        'hypothesis!=3.56.9',
+        'flake8'
+    ],
     entry_points={
         'console_scripts': [
             'python-escpos = escpos.cli:main'

src/escpos/__init__.py

@@ -7,7 +7,7 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-__all__ = ["constants", "escpos", "exceptions", "printer"]
+__all__ = ['constants', 'escpos', 'exceptions', 'printer']
 
 try:
     from .version import version as __version__  # noqa

src/escpos/capabilities.json

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

src/escpos/capabilities.py

@@ -0,0 +1,159 @@
+#!/usr/bin/env python
+#  -*- coding: utf-8 -*-
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import logging
+import pickle
+import platform
+import re
+import time
+from os import environ, path
+from tempfile import gettempdir
+
+import six
+
+import yaml
+
+logging.basicConfig()
+logger = logging.getLogger(__name__)
+
+pickle_dir = environ.get('ESCPOS_CAPABILITIES_PICKLE_DIR', gettempdir())
+pickle_path = path.join(pickle_dir, '{v}.capabilities.pickle'.format(v=platform.python_version()))
+capabilities_path = environ.get(
+    'ESCPOS_CAPABILITIES_FILE',
+    path.join(path.dirname(__file__), 'capabilities.json'))
+
+# Load external printer database
+t0 = time.time()
+logger.debug('Using capabilities from file: %s', capabilities_path)
+if path.exists(pickle_path):
+    if path.getmtime(capabilities_path) > path.getmtime(pickle_path):
+        logger.debug('Found a more recent capabilities file')
+        full_load = True
+    else:
+        full_load = False
+        logger.debug('Loading capabilities from pickle in %s', pickle_path)
+        with open(pickle_path, 'rb') as cf:
+            CAPABILITIES = pickle.load(cf)
+else:
+    logger.debug('Capabilities pickle file not found: %s', pickle_path)
+    full_load = True
+
+if full_load:
+    logger.debug('Loading and pickling capabilities')
+    with open(capabilities_path) as cp, open(pickle_path, 'wb') as pp:
+        CAPABILITIES = yaml.load(cp)
+        pickle.dump(CAPABILITIES, pp, protocol=2)
+
+logger.debug('Finished loading capabilities took %.2fs', time.time() - t0)
+
+
+PROFILES = CAPABILITIES['profiles']
+
+
+class NotSupported(Exception):
+    """Raised if a requested feature is not supported 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

@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+#  -*- coding: utf-8 -*-
 # PYTHON_ARGCOMPLETE_OK
 """ CLI
 
@@ -15,13 +16,15 @@ from __future__ import print_function
 from __future__ import unicode_literals
 
 import argparse
+import sys
+
 try:
     import argcomplete
 except ImportError:
     # this CLI works nevertheless without argcomplete
     pass  # noqa
-import sys
 import six
+
 from . import config
 from . import version
 
@@ -33,9 +36,11 @@ def str_to_bool(string):
     """
     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.
@@ -98,6 +103,12 @@ ESCPOS_COMMANDS = [
                 '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,
             }
         ],
     },
@@ -244,13 +255,13 @@ ESCPOS_COMMANDS = [
                 '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,
-            },      
-                      
+            },
+
         ],
     },
     {
@@ -542,7 +553,7 @@ def main():
         # print command with args
         getattr(printer, target_command)(**command_arguments)
         if target_command in REQUIRES_NEWLINE:
-            printer.text("\n")
+            printer.text('\n')
     else:
         command_arguments['printer'] = printer
         globals()[target_command](**command_arguments)
@@ -568,5 +579,6 @@ def demo(printer, **kwargs):
             command(**params)
         printer.cut()
 
+
 if __name__ == '__main__':
     main()

src/escpos/codepages.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python
+#  -*- coding: utf-8 -*-
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+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

@@ -1,3 +1,4 @@
+#  -*- coding: utf-8 -*-
 """ ESC/POS configuration manager.
 
 This module contains the implentations of abstract base class :py:class:`Config`.
@@ -10,11 +11,13 @@ from __future__ import print_function
 from __future__ import unicode_literals
 
 import os
+
 import appdirs
+
 import yaml
 
-from . import printer
 from . import exceptions
+from . import printer
 
 
 class Config(object):

src/escpos/constants.py

@@ -7,8 +7,8 @@ moved to `capabilities` as in `escpos-php by @mike42 <https://github.com/mike42/
 
 :author: `Manuel F Martinez <manpaz@bashlinux.com>`_ and others
 :organization: Bashlinux and `python-escpos <https://github.com/python-escpos>`_
-:copyright: Copyright (c) 2012 Bashlinux
-:license: GNU GPL v3
+:copyright: Copyright (c) 2012-2017 Bashlinux and python-escpos
+:license: MIT
 """
 
 from __future__ import absolute_import
@@ -47,6 +47,7 @@ HW_RESET  = ESC + b'\x3f\x0a\x00'   # Reset printer hardware
 
 # 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 []
 
@@ -55,73 +56,121 @@ _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
 
+# Line display printing
+LINE_DISPLAY_OPEN = ESC + b'\x3d\x02'
+LINE_DISPLAY_CLEAR = ESC + b'\x40'
+LINE_DISPLAY_CLOSE = ESC + b'\x3d\x01'
+
+# 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_FONT_A     = ESC + b'\x4d\x00'  # Font type A
-TXT_FONT_B     = ESC + b'\x4d\x01'  # Font type B
-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
 
-# Char code table
-CHARCODE_PC437  = ESC + b'\x74\x00'  # USA: Standard Europe
-CHARCODE_JIS    = ESC + b'\x74\x01'  # Japanese Katakana
-CHARCODE_PC850  = ESC + b'\x74\x02'  # Multilingual
-CHARCODE_PC860  = ESC + b'\x74\x03'  # Portuguese
-CHARCODE_PC863  = ESC + b'\x74\x04'  # Canadian-French
-CHARCODE_PC865  = ESC + b'\x74\x05'  # Nordic
-CHARCODE_WEU    = ESC + b'\x74\x06'  # Simplified Kanji, Hirakana
-CHARCODE_GREEK  = ESC + b'\x74\x07'  # Simplified Kanji
-CHARCODE_HEBREW = ESC + b'\x74\x08'  # Simplified Kanji
-CHARCODE_PC1252 = ESC + b'\x74\x11'  # Western European Windows Code Set
-CHARCODE_PC866  = ESC + b'\x74\x12'  # Cirillic #2
-CHARCODE_PC852  = ESC + b'\x74\x13'  # Latin 2
-CHARCODE_PC858  = ESC + b'\x74\x14'  # Euro
-CHARCODE_THAI42 = ESC + b'\x74\x15'  # Thai character code 42
-CHARCODE_THAI11 = ESC + b'\x74\x16'  # Thai character code 11
-CHARCODE_THAI13 = ESC + b'\x74\x17'  # Thai character code 13
-CHARCODE_THAI14 = ESC + b'\x74\x18'  # Thai character code 14
-CHARCODE_THAI16 = ESC + b'\x74\x19'  # Thai character code 16
-CHARCODE_THAI17 = ESC + b'\x74\x1a'  # Thai character code 17
-CHARCODE_THAI18 = ESC + b'\x74\x1b'  # Thai character code 18
+TXT_NORMAL     = ESC + b'!\x00'     # Normal text
+
+
+TXT_STYLE = {
+    'bold': {
+        False: ESC + b'\x45\x00',               # Bold font OFF
+        True: ESC + b'\x45\x01'                 # Bold font ON
+    },
+    'underline': {
+        0: ESC + b'\x2d\x00',                   # Underline font OFF
+        1: ESC + b'\x2d\x01',                   # Underline font 1-dot ON
+        2: ESC + b'\x2d\x02'                    # Underline font 2-dot ON
+    },
+    'size': {
+        'normal': TXT_NORMAL + ESC + b'!\x00',  # Normal text
+        '2h': TXT_NORMAL + ESC + b'!\x10',      # Double height text
+        '2w': TXT_NORMAL + ESC + b'!\x20',      # Double width text
+        '2x': TXT_NORMAL + ESC + b'!\x30'       # Quad area text
+    },
+    'font': {
+        'a': ESC + b'\x4d\x00',                 # Font type A
+        'b': ESC + b'\x4d\x00'                  # Font type B
+    },
+    'align': {
+        'left': ESC + b'\x61\x00',              # Left justification
+        'center': ESC + b'\x61\x01',            # Centering
+        'right': ESC + b'\x61\x02'              # Right justification
+    },
+    'invert': {
+        True: GS  + b'\x42\x01',                # Inverse Printing ON
+        False: GS  + b'\x42\x00'                # Inverse Printing OFF
+    },
+    'color': {
+        'black': ESC + b'\x72\x00',             # Default Color
+        'red': ESC + b'\x72\x01'                # Alternative Color, Usually Red
+    },
+    'flip': {
+        True: ESC + b'\x7b\x01',                # Flip ON
+        False: ESC + b'\x7b\x00'                # Flip OFF
+    },
+    'density': {
+        0: GS + b'\x7c\x00',                    # Printing Density -50%
+        1: GS + b'\x7c\x01',                    # Printing Density -37.5%
+        2: GS + b'\x7c\x02',                    # Printing Density -25%
+        3: GS + b'\x7c\x03',                    # Printing Density -12.5%
+        4: GS + b'\x7c\x04',                    # Printing Density  0%
+        5: GS + b'\x7c\x08',                    # Printing Density +50%
+        6: GS + b'\x7c\x07',                    # Printing Density +37.5%
+        7: GS + b'\x7c\x06',                    # Printing Density +25%
+        8: GS + b'\x7c\x05'                     # Printing Density +12.5%
+    },
+    'smooth': {
+        True: GS + b'\x62\x01',                 # Smooth ON
+        False: GS + b'\x62\x00'                 # Smooth OFF
+    },
+    'height': {                                 # Custom text height
+        1: 0x00,
+        2: 0x01,
+        3: 0x02,
+        4: 0x03,
+        5: 0x04,
+        6: 0x05,
+        7: 0x06,
+        8: 0x07
+    },
+    'width': {                                  # Custom text width
+        1: 0x00,
+        2: 0x10,
+        3: 0x20,
+        4: 0x30,
+        5: 0x40,
+        6: 0x50,
+        7: 0x60,
+        8: 0x70
+    }
+}
+
+# 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
+
+# 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
@@ -168,10 +217,7 @@ BARCODE_TYPE_B = {
     'NW7':                         _SET_BARCODE_TYPE(71),
     'CODABAR':                     _SET_BARCODE_TYPE(71),  # Same as NW7
     'CODE93':                      _SET_BARCODE_TYPE(72),
-    # These are all the same barcode, but using different charcter sets
-    'CODE128A':                    _SET_BARCODE_TYPE(73) + b'{A',  # CODE128 character set A
-    'CODE128B':                    _SET_BARCODE_TYPE(73) + b'{B',  # CODE128 character set B
-    'CODE128C':                    _SET_BARCODE_TYPE(73) + b'{C',  # CODE128 character set C
+    '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),
@@ -179,6 +225,24 @@ BARCODE_TYPE_B = {
     'GS1 DATABAR EXPANDED':        _SET_BARCODE_TYPE(78),
 }
 
+BARCODE_FORMATS = {
+    'UPC-A':                       ([(11, 12)], "^[0-9]{11,12}$"),
+    'UPC-E':                       ([(7, 8), (11, 12)], "^([0-9]{7,8}|[0-9]{11,12})$"),
+    'EAN13':                       ([(12, 13)], "^[0-9]{12,13}$"),
+    'EAN8':                        ([(7, 8)], "^[0-9]{7,8}$"),
+    'CODE39':                      ([(1, 255)], "^([0-9A-Z \$\%\+\-\.\/]+|\*[0-9A-Z \$\%\+\-\.\/]+\*)$"),
+    'ITF':                         ([(2, 255)], "^([0-9]{2})+$"),
+    'NW7':                         ([(1, 255)], "^[A-Da-d][0-9\$\+\-\.\/\:]+[A-Da-d]$"),
+    'CODABAR':                     ([(1, 255)], "^[A-Da-d][0-9\$\+\-\.\/\:]+[A-Da-d]$"),  # Same as NW7
+    'CODE93':                      ([(1, 255)], "^[\\x00-\\x7F]+$"),
+    'CODE128':                     ([(2, 255)], "^\{[A-C][\\x00-\\x7F]+$"),
+    'GS1-128':                     ([(2, 255)], "^\{[A-C][\\x00-\\x7F]+$"), # same as CODE128
+    'GS1 DATABAR OMNIDIRECTIONAL': ([(13,13)], "^[0-9]{13}$"),
+    'GS1 DATABAR TRUNCATED':       ([(13,13)], "^[0-9]{13}$"), # same as GS1 omnidirectional
+    'GS1 DATABAR LIMITED':         ([(13,13)], "^[01][0-9]{12}$"),
+    'GS1 DATABAR EXPANDED':        ([(2,255)], "^\([0-9][A-Za-z0-9 \!\"\%\&\'\(\)\*\+\,\-\.\/\:\;\<\=\>\?\_\{]+$"),
+}
+
 BARCODE_TYPES = {
     'A': BARCODE_TYPE_A,
     'B': BARCODE_TYPE_B,
@@ -189,7 +253,7 @@ 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
@@ -204,13 +268,11 @@ 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%
+# Status Command
+RT_STATUS = DLE + EOT
+RT_STATUS_ONLINE = RT_STATUS +  b'\x01'
+RT_STATUS_PAPER = RT_STATUS +  b'\x04'
+RT_MASK_ONLINE = 8
+RT_MASK_PAPER = 18
+RT_MASK_LOWPAPER = 30
+RT_MASK_NOPAPER = 114

src/escpos/exceptions.py

@@ -8,6 +8,7 @@ Result/Exit codes:
     - `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`
+    - `41` = Image width is too large :py:exc:`~escpos.exceptions.ImageWidthError`
     - `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`
@@ -20,8 +21,8 @@ Result/Exit codes:
 
 :author: `Manuel F Martinez <manpaz@bashlinux.com>`_ and others
 :organization: Bashlinux and `python-escpos <https://github.com/python-escpos>`_
-:copyright: Copyright (c) 2012 Bashlinux
-:license: GNU GPL v3
+:copyright: Copyright (c) 2012-2017 Bashlinux and python-escpos
+:license: MIT
 """
 
 from __future__ import absolute_import
@@ -50,13 +51,13 @@ class BarcodeTypeError(Error):
     one of those specified in :py:meth:`escpos.escpos.Escpos.barcode`.
     The returned error code is `10`.
     """
-    def __init__(self, msg=""):
+    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)
+        return 'No Barcode type is defined ({msg})'.format(msg=self.msg)
 
 
 class BarcodeSizeError(Error):
@@ -66,28 +67,29 @@ class BarcodeSizeError(Error):
     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=""):
+    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)
+        return 'Barcode size is out of range ({msg})'.format(msg=self.msg)
 
 
 class BarcodeCodeError(Error):
-    """ No Barcode code was supplied.
+    """ No Barcode code was supplied, or it is incorrect.
 
-    No data for the barcode has been supplied in :py:meth:`escpos.escpos.Escpos.barcode`.
+    No data for the barcode has been supplied in :py:meth:`escpos.escpos.Escpos.barcode` or the the `check` parameter
+    was True and the check failed.
     The returncode for this exception is `30`.
     """
-    def __init__(self, msg=""):
+    def __init__(self, msg=''):
         Error.__init__(self, msg)
         self.msg = msg
         self.resultcode = 30
 
     def __str__(self):
-        return "No Barcode code was supplied"
+        return 'No Barcode code was supplied ({msg})'.format(msg=self.msg)
 
 
 class ImageSizeError(Error):
@@ -95,13 +97,27 @@ class ImageSizeError(Error):
 
     The returncode for this exception is `40`.
     """
-    def __init__(self, msg=""):
+    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"
+        return "Image height is longer than 255px and can't be printed ({msg})".format(msg=self.msg)
+
+
+class ImageWidthError(Error):
+    """ Image width is too large.
+
+    The return code for this exception is `41`.
+    """
+    def __init__(self, msg=''):
+        Error.__init__(self, msg)
+        self.msg = msg
+        self.resultcode = 41
+
+    def __str__(self):
+        return 'Image width is too large ({msg})'.format(msg=self.msg)
 
 
 class TextError(Error):
@@ -110,13 +126,13 @@ class TextError(Error):
     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=""):
+    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"
+        return 'Text string must be supplied to the text() method ({msg})'.format(msg=self.msg)
 
 
 class CashDrawerError(Error):
@@ -125,28 +141,29 @@ class CashDrawerError(Error):
     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=""):
+    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"
+        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.
+    """ Valid tab positions must be set by using from 1 to 32 tabs, and between 1 and 255 tab size values.
+    Both values multiplied must not exceed 255, since it is the maximum tab value.
 
     This exception is raised by :py:meth:`escpos.escpos.Escpos.control`.
     The returncode for this exception is `70`.
     """
-    def __init__(self, msg=""):
+    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"
+        return 'Valid tab positions must be in the range 0 to 16 ({msg})'.format(msg=self.msg)
 
 
 class CharCodeError(Error):
@@ -155,13 +172,13 @@ class CharCodeError(Error):
     The supplied charcode-name in :py:meth:`escpos.escpos.Escpos.charcode` is unknown.
     Ths returncode for this exception is `80`.
     """
-    def __init__(self, msg=""):
+    def __init__(self, msg=''):
         Error.__init__(self, msg)
         self.msg = msg
         self.resultcode = 80
 
     def __str__(self):
-        return "Valid char code must be set"
+        return 'Valid char code must be set ({msg})'.format(msg=self.msg)
 
 
 class USBNotFoundError(Error):
@@ -170,13 +187,13 @@ class USBNotFoundError(Error):
     The USB device seems to be not plugged in.
     Ths returncode for this exception is `90`.
     """
-    def __init__(self, msg=""):
+    def __init__(self, msg=''):
         Error.__init__(self, msg)
         self.msg = msg
         self.resultcode = 90
 
     def __str__(self):
-        return "USB device not found"
+        return 'USB device not found ({msg})'.format(msg=self.msg)
 
 
 class SetVariableError(Error):
@@ -185,13 +202,13 @@ class SetVariableError(Error):
     Check set variables against minimum and maximum values
     Ths returncode for this exception is `100`.
     """
-    def __init__(self, msg=""):
+    def __init__(self, msg=''):
         Error.__init__(self, msg)
         self.msg = msg
         self.resultcode = 100
 
     def __str__(self):
-        return "Set variable out of range"
+        return 'Set variable out of range ({msg})'.format(msg=self.msg)
 
 
 # Configuration errors
@@ -202,13 +219,13 @@ class ConfigNotFoundError(Error):
     The default or passed configuration file could not be read
     Ths returncode for this exception is `200`.
     """
-    def __init__(self, msg=""):
+    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)
+        return 'Configuration not found ({msg})'.format(msg=self.msg)
 
 
 class ConfigSyntaxError(Error):
@@ -217,13 +234,13 @@ class ConfigSyntaxError(Error):
     The syntax is incorrect
     Ths returncode for this exception is `210`.
     """
-    def __init__(self, msg=""):
+    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)
+        return 'Configuration syntax is invalid ({msg})'.format(msg=self.msg)
 
 
 class ConfigSectionMissingError(Error):
@@ -232,10 +249,10 @@ class ConfigSectionMissingError(Error):
     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=""):
+    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)
+        return 'Configuration section is missing ({msg})'.format(msg=self.msg)

src/escpos/image.py

@@ -1,3 +1,4 @@
+#  -*- coding: utf-8 -*-
 """ Image format handling class
 
 This module contains the image format handler :py:class:`EscposImage`.
@@ -5,9 +6,16 @@ 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: GNU GPL v3
+: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
 
 
@@ -22,7 +30,7 @@ class EscposImage(object):
     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):
@@ -30,18 +38,21 @@ class EscposImage(object):
         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 = 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") 
+        im = im.convert('L')
         # Invert: Only works on 'L' images
         im = ImageOps.invert(im)
         # Pure black and white
-        self._im = im.convert("1")
-    
+        self._im = im.convert('1')
+
     @property
     def width(self):
         """
@@ -88,3 +99,37 @@ class EscposImage(object):
         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
+
+    def center(self, max_width):
+        """In-place image centering
+
+        :param: Maximum width in order to deduce x offset for centering
+        :return: None
+        """
+        old_width, height = self._im.size
+        new_size = (max_width, height)
+
+        new_im = Image.new('1', new_size)
+        paste_x = int((max_width - old_width) / 2)
+
+        new_im.paste(self._im, (paste_x, 0))
+
+        self._im = new_im

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 +1,298 @@
+#!/usr/bin/env 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
+
+import six
+
+from .codepages import CodePages
+from .constants import CODEPAGE_CHANGE
+from .exceptions import Error
+
+
+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

@@ -4,8 +4,8 @@
 
 :author: `Manuel F Martinez <manpaz@bashlinux.com>`_ and others
 :organization: Bashlinux and `python-escpos <https://github.com/python-escpos>`_
-:copyright: Copyright (c) 2012 Bashlinux
-:license: GNU GPL v3
+:copyright: Copyright (c) 2012-2017 Bashlinux and python-escpos
+:license: MIT
 """
 
 from __future__ import absolute_import
@@ -13,10 +13,12 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
+import socket
+
+import serial
+
 import usb.core
 import usb.util
-import serial
-import socket
 
 from .escpos import Escpos
 from .exceptions import USBNotFoundError
@@ -34,7 +36,7 @@ class Usb(Escpos):
 
     """
 
-    def __init__(self, idVendor, idProduct, timeout=0, in_ep=0x82, out_ep=0x01, *args, **kwargs):
+    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
@@ -54,7 +56,7 @@ class Usb(Escpos):
         """ 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.")
+            raise USBNotFoundError('Device not found or cable not plugged in.')
 
         check_driver = None
 
@@ -68,13 +70,13 @@ class Usb(Escpos):
                 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)))
+                    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)))
+            print('Could not set configuration: {0}'.format(str(e)))
 
     def _raw(self, msg):
         """ Print any command sent in raw format
@@ -84,6 +86,10 @@ class Usb(Escpos):
         """
         self.device.write(self.out_ep, msg, self.timeout)
 
+    def _read(self):
+        """ Reads a data buffer and returns it to the caller. """
+        return self.device.read(self.in_ep, 16)
+
     def close(self):
         """ Release USB interface """
         if self.device:
@@ -103,7 +109,7 @@ class Serial(Escpos):
 
     """
 
-    def __init__(self, devfile="/dev/ttyS0", baudrate=9600, bytesize=8, timeout=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):
         """
@@ -131,15 +137,17 @@ class Serial(Escpos):
 
     def open(self):
         """ Setup serial port and set is as escpos device """
+        if self.device is not None and self.device.is_open:
+            self.close()
         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")
+            print('Serial printer enabled')
         else:
-            print("Unable to open serial printer on: {0}".format(str(self.devfile)))
+            print('Unable to open serial printer on: {0}'.format(str(self.devfile)))
 
     def _raw(self, msg):
         """ Print any command sent in raw format
@@ -149,9 +157,13 @@ class Serial(Escpos):
         """
         self.device.write(msg)
 
+    def _read(self):
+        """ Reads a data buffer and returns it to the caller. """
+        return self.device.read(16)
+
     def close(self):
         """ Close Serial interface """
-        if self.device is not None:
+        if self.device is not None and self.device.is_open:
             self.device.flush()
             self.device.close()
 
@@ -182,9 +194,9 @@ class Network(Escpos):
     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
+        :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
@@ -199,7 +211,7 @@ class Network(Escpos):
         self.device.connect((self.host, self.port))
 
         if self.device is None:
-            print("Could not open socket for {0}".format(self.host))
+            print('Could not open socket for {0}'.format(self.host))
 
     def _raw(self, msg):
         """ Print any command sent in raw format
@@ -211,8 +223,9 @@ class Network(Escpos):
 
     def close(self):
         """ Close TCP connection """
-        self.device.shutdown(socket.SHUT_RDWR)
-        self.device.close()
+        if self.device is not None:
+            self.device.shutdown(socket.SHUT_RDWR)
+            self.device.close()
 
 
 class File(Escpos):
@@ -229,21 +242,23 @@ class File(Escpos):
 
     """
 
-    def __init__(self, devfile="/dev/usb/lp0", *args, **kwargs):
+    def __init__(self, devfile='/dev/usb/lp0', auto_flush=True, *args, **kwargs):
         """
 
-        :param devfile : Device file under dev filesystem
+        :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")
+        self.device = open(self.devfile, 'wb')
 
         if self.device is None:
-            print("Could not open the specified file {0}".format(self.devfile))
+            print('Could not open the specified file {0}'.format(self.devfile))
 
     def flush(self):
         """ Flush printing content """
@@ -256,11 +271,14 @@ class File(Escpos):
         :type msg: bytes
         """
         self.device.write(msg)
+        if self.auto_flush:
+            self.flush()
 
     def close(self):
         """ Close system file """
-        self.device.flush()
-        self.device.close()
+        if self.device is not None:
+            self.device.flush()
+            self.device.close()
 
 
 class Dummy(Escpos):
@@ -296,5 +314,13 @@ class Dummy(Escpos):
         """ Get the data that was sent to this printer """
         return b''.join(self._output_list)
 
+    def clear(self):
+        """ Clear the buffer of the printer
+
+        This method can be called if you send the contents to a physical printer
+        and want to use the Dummy printer for new output.
+        """
+        del self._output_list[:]
+
     def close(self):
         pass

test/Dies ist ein Test.LF.txt

@@ -1 +0,0 @@
-Dies ist ein Test.

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

@@ -4,7 +4,7 @@
 :author: `Patrick Kanzler <patrick.kanzler@fablab.fau.de>`_
 :organization: `python-escpos <https://github.com/python-escpos>`_
 :copyright: Copyright (c) 2016 Patrick Kanzler
-:license: GNU GPL v3
+:license: MIT
 """
 
 from __future__ import absolute_import

test/test_cli.py

@@ -10,7 +10,7 @@ from __future__ import unicode_literals
 import os
 import sys
 from scripttest import TestFileEnvironment
-from nose.tools import assert_equals
+from nose.tools import assert_equals, nottest
 import escpos
 
 TEST_DIR = os.path.abspath('test/test-cli-output')
@@ -30,31 +30,26 @@ printer:
 )
 
 
-class TestCLI():
+class TestCLI:
     """ Contains setups, teardowns, and tests for CLI
     """
 
-    def __init__(self):
-        """ Initalize the tests.
-        Just define some vars here since most of them get set during
-        setup_class and teardown_class
-        """
-        self.env = None
-        self.default_args = None
-
-    @staticmethod
-    def setup_class():
+    @classmethod
+    def setup_class(cls):
         """ Create a config file to read from """
         with open(CONFIGFILE, 'w') as config:
             config.write(CONFIG_YAML)
 
-    @staticmethod
-    def teardown_class():
+    @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(),
@@ -89,6 +84,7 @@ class TestCLI():
         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'

test/test_function_barcode.py

@@ -0,0 +1,52 @@
+#!/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, BarcodeCodeError
+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''
+
+
+@pytest.mark.parametrize("bctype,data", [
+    ('EAN13', 'AA'),
+    ('CODE128', '{D2354AA'),
+])
+def test_code_check(bctype, data):
+    """should raise an error if the barcode code is invalid.
+    """
+    instance = printer.Dummy()
+    with pytest.raises(BarcodeCodeError):
+        instance.barcode(data, bctype)
+
+    assert instance.output == b''

test/test_function_cashdraw.py

@@ -0,0 +1,19 @@
+#!/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.exceptions import CashDrawerError
+import pytest
+
+
+def test_raise_CashDrawerError():
+    """should raise an error if the sequence is invalid.
+    """
+    instance = printer.Dummy()
+    with pytest.raises(CashDrawerError):
+        # call with sequence that is too long
+        instance.cashdraw([1,1,1,1,1,1])
+

test/test_function_check_barcode.py

@@ -0,0 +1,104 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import escpos.printer as printer
+import pytest
+
+
+@pytest.mark.parametrize("bctype,data", [
+    ('UPC-A', '01234567890'),
+    ('UPC-A', '012345678905'),
+    ('UPC-E', '01234567'),
+    ('UPC-E', '0123456'),
+    ('UPC-E', '012345678905'),
+    ('EAN13', '0123456789012'),
+    ('EAN13', '012345678901'),
+    ('EAN8', '01234567'),
+    ('EAN8', '0123456'),
+    ('CODE39', 'ABC-1234'),
+    ('CODE39', 'ABC-1234-$$-+A'),
+    ('CODE39', '*WIKIPEDIA*'),
+    ('ITF', '010203040506070809'),
+    ('ITF', '11221133113344556677889900'),
+    ('CODABAR', 'A2030405060B'),
+    ('CODABAR', 'C11221133113344556677889900D'),
+    ('CODABAR', 'D0D'),
+    ('NW7', 'A2030405060B'),
+    ('NW7', 'C11221133113344556677889900D'),
+    ('NW7', 'D0D'),
+    ('CODE93', 'A2030405060B'),
+    ('CODE93', '+:$&23-7@$'),
+    ('CODE93', 'D0D'),
+    ('CODE128', '{A2030405060B'),
+    ('CODE128', '{C+:$&23-7@$'),
+    ('CODE128', '{B0D'),
+    ('GS1-128', '{A2030405060B'),
+    ('GS1-128', '{C+:$&23-7@$'),
+    ('GS1-128', '{B0D'),
+    ('GS1 DATABAR OMNIDIRECTIONAL', '0123456789123'),
+    ('GS1 DATABAR TRUNCATED', '0123456789123'),
+    ('GS1 DATABAR LIMITED', '0123456789123'),
+    ('GS1 DATABAR EXPANDED', '(9A{A20304+-%&06a0B'),
+    ('GS1 DATABAR EXPANDED', '(1 {C+:&23-7%'),
+    ('GS1 DATABAR EXPANDED', '(00000001234567678'),
+])
+def test_check_valid_barcode(bctype, data):
+    assert (printer.Escpos.check_barcode(bctype, data))
+
+
+@pytest.mark.parametrize("bctype,data", [
+    ('UPC-A', '01234567890123'),  # too long
+    ('UPC-A', '0123456789'),  # too short
+    ('UPC-A', '72527273-711'),  # invalid '-'
+    ('UPC-A', 'A12345678901'),  # invalid 'A'
+    ('UPC-E', '01234567890123'),  # too long
+    ('UPC-E', '012345'),  # too short
+    ('UPC-E', '72527-2'),  # invalid '-'
+    ('UPC-E', 'A123456'),  # invalid 'A'
+    ('EAN13', '0123456789'),  # too short
+    ('EAN13', 'A123456789012'),  # invalid 'A'
+    ('EAN13', '012345678901234'),  # too long
+    ('EAN8', '012345'),  # too short
+    ('EAN8', 'A123456789012'),  # invalid 'A'
+    ('EAN8', '012345678901234'),  # too long
+    ('CODE39', 'ALKJ_34'),  # invalid '_'
+    ('CODE39', 'A' * 256),  # too long
+    ('ITF', '010203040'),  # odd length
+    ('ITF', '0' * 256),  # too long
+    ('ITF', 'AB01'),  # invalid 'A'
+    ('CODABAR', '010203040'),  # no start/stop
+    ('CODABAR', '0' * 256),  # too long
+    ('CODABAR', 'AB-01F'),  # invalid 'B'
+    ('NW7', '010203040'),  # no start/stop
+    ('NW7', '0' * 256),  # too long
+    ('NW7', 'AB-01F'),  # invalid 'B'
+    ('CODE93', 'é010203040'),  # invalid 'é'
+    ('CODE93', '0' * 256),  # too long
+    ('CODE128', '010203040'),  # missing leading {
+    ('CODE128', '{D2354AA'),  # second char not between A-C
+    ('CODE128', '0' * 256),  # too long
+    ('GS1-128', '010203040'),  # missing leading {
+    ('GS1-128', '{D2354AA'),  # second char not between A-C
+    ('GS1-128', '0' * 256),  # too long
+    ('GS1 DATABAR OMNIDIRECTIONAL', '01234567891234'),  # too long
+    ('GS1 DATABAR OMNIDIRECTIONAL', '012345678912'),  # too short
+    ('GS1 DATABAR OMNIDIRECTIONAL', '012345678A1234'),  # invalid 'A'
+    ('GS1 DATABAR TRUNCATED', '01234567891234'),  # too long
+    ('GS1 DATABAR TRUNCATED', '012345678912'),  # too short
+    ('GS1 DATABAR TRUNCATED', '012345678A1234'),  # invalid 'A'
+    ('GS1 DATABAR LIMITED', '01234567891234'),  # too long
+    ('GS1 DATABAR LIMITED', '012345678912'),  # too short
+    ('GS1 DATABAR LIMITED', '012345678A1234'),  # invalid 'A'
+    ('GS1 DATABAR LIMITED', '02345678912341'),  # invalid start (should be 01)
+    ('GS1 DATABAR EXPANDED', '010203040'),  # missing leading (
+    ('GS1-128', '(' + ('0' * 256)),  # too long
+    ('GS1 DATABAR EXPANDED', '(a{D2354AA'),  # second char not between 0-9
+    ('GS1 DATABAR EXPANDED', 'IT will fail'),  # first char not '('
+])
+def test_check_invalid_barcode(bctype, data):
+    assert (not printer.Escpos.check_barcode(bctype, data))

test/test_function_cut.py

@@ -0,0 +1,17 @@
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import six
+
+import escpos.printer as printer
+from escpos.constants import GS
+
+
+def test_cut_without_feed():
+    """Test cut without feeding paper"""
+    instance = printer.Dummy()
+    instance.cut(feed=False)
+    expected = GS + b'V' + six.int2byte(66) + b'\x00'
+    assert(instance.output == expected)

test/test_function_dummy_clear.py

@@ -0,0 +1,8 @@
+from nose.tools import assert_raises
+from escpos.printer import Dummy
+
+def test_printer_dummy_clear():
+    printer = Dummy()
+    printer.text("Hello")
+    printer.clear()
+    assert(printer.output == b'')

test/test_function_image.py

@@ -4,7 +4,7 @@
 :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: GNU GPL v3
+:license: MIT
 """
 
 from __future__ import absolute_import
@@ -12,9 +12,13 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 
-import escpos.printer as printer
+import pytest
+
 from PIL import Image
 
+import escpos.printer as printer
+from escpos.exceptions import ImageWidthError
+
 
 # Raster format print
 def test_bit_image_black():
@@ -130,3 +134,46 @@ def test_graphics_transparent():
     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')
+
+
+@pytest.fixture
+def dummy_with_width():
+    instance = printer.Dummy()
+    instance.profile.profile_data = {
+        'media': {
+            'width': {
+                'pixels': 384
+            }
+        }
+    }
+    return instance
+
+
+def test_width_too_large(dummy_with_width):
+    """
+    Test printing an image that is too large in width.
+    """
+    instance = dummy_with_width
+
+    with pytest.raises(ImageWidthError):
+        instance.image(Image.new("RGB", (385, 200)))
+
+    instance.image(Image.new("RGB", (384, 200)))
+
+
+def test_center_image(dummy_with_width):
+    instance = dummy_with_width
+
+    with pytest.raises(ImageWidthError):
+        instance.image(Image.new("RGB", (385, 200)), center=True)
+
+    instance.image(Image.new("RGB", (384, 200)), center=True)

test/test_function_linedisplay.py

@@ -0,0 +1,35 @@
+#!/usr/bin/python
+"""tests for line display
+
+:author: `Patrick Kanzler <patrick.kanzler@fablab.fau.de>`_
+:organization: `python-escpos <https://github.com/python-escpos>`_
+:copyright: Copyright (c) 2017 `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 escpos.printer as printer
+
+
+def test_function_linedisplay_select_on():
+    """test the linedisplay_select function (activate)"""
+    instance = printer.Dummy()
+    instance.linedisplay_select(select_display=True)
+    assert(instance.output == b'\x1B\x3D\x02')
+
+def test_function_linedisplay_select_off():
+    """test the linedisplay_select function (deactivate)"""
+    instance = printer.Dummy()
+    instance.linedisplay_select(select_display=False)
+    assert(instance.output == b'\x1B\x3D\x01')
+
+def test_function_linedisplay_clear():
+    """test the linedisplay_clear function"""
+    instance = printer.Dummy()
+    instance.linedisplay_clear()
+    assert(instance.output == b'\x1B\x40')
+

test/test_function_panel_button.py

@@ -4,7 +4,7 @@
 :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: GNU GPL v3
+:license: MIT
 """
 
 from __future__ import absolute_import
@@ -12,43 +12,18 @@ 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 = printer.Dummy()
     instance.panel_buttons()
-    instance.flush()
-    with open(devfile, "rb") as f:
-        assert(f.read() == b'\x1B\x63\x35\x00')
+    assert(instance.output == 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 = printer.Dummy()
     instance.panel_buttons(False)
-    instance.flush()
-    with open(devfile, "rb") as f:
-        assert(f.read() == b'\x1B\x63\x35\x01')
+    assert(instance.output == b'\x1B\x63\x35\x01')

test/test_function_qr_native.py

@@ -4,7 +4,7 @@
 :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: GNU GPL v3
+:license: MIT
 """
 
 from __future__ import absolute_import
@@ -13,6 +13,8 @@ from __future__ import print_function
 from __future__ import unicode_literals
 
 from nose.tools import raises
+import pytest
+
 import escpos.printer as printer
 from escpos.constants import QR_ECLEVEL_H, QR_MODEL_1
 
@@ -25,7 +27,6 @@ def test_defaults():
         b'(k\x07\x001P01234\x1d(k\x03\x001Q0'
     assert(instance.output == expected)
 
-
 def test_empty():
     """Test QR printing blank code"""
     instance = printer.Dummy()
@@ -81,14 +82,17 @@ def test_invalid_model():
     instance.qr("1234", native=True, model="Hello")
 
 
+@pytest.mark.skip("this test has to be debugged")
 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' \
+    expected = b'\x1bt\x00\n' \
+        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'
+        b'i(\x7f<\xa8A \xd8]\'\xc4]y\xf8]E\x80Ar\x94\x7fR@\x00\x00\x00' \
+        b'\n\n'
     assert(instance.output == expected)
 
 
@@ -97,3 +101,13 @@ def test_image_invalid_model():
     """Test unsupported QR model as image"""
     instance = printer.Dummy()
     instance.qr("1234", native=False, model=QR_MODEL_1)
+
+
+@pytest.fixture
+def instance():
+    return printer.Dummy()
+
+
+def test_center_not_implementer(instance):
+    with pytest.raises(NotImplementedError):
+        instance.qr("test", center=True, native=True)

test/test_function_qr_non-native.py

@@ -0,0 +1,42 @@
+#!/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 pytest
+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)
+
+
+@pytest.fixture
+def instance():
+    return Dummy()
+
+
+def test_center(instance):
+    instance.qr("LoremIpsum", center=True)

test/test_function_set.py

@@ -0,0 +1,280 @@
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import six
+
+import escpos.printer as printer
+from escpos.constants import TXT_NORMAL, TXT_STYLE, SET_FONT
+from escpos.constants import TXT_SIZE
+
+
+# Default test, please copy and paste this block to test set method calls
+
+def test_default_values():
+    instance = printer.Dummy()
+    instance.set()
+
+    expected_sequence = (
+        TXT_NORMAL, TXT_STYLE['size']['normal'],  # Normal text size
+        TXT_STYLE['flip'][False],  # Flip OFF
+        TXT_STYLE['smooth'][False],  # Smooth OFF
+        TXT_STYLE['bold'][False],  # Bold OFF
+        TXT_STYLE['underline'][0],  # Underline OFF
+        SET_FONT(b'\x00'),  # Default font
+        TXT_STYLE['align']['left'],  # Align left
+        TXT_STYLE['invert'][False]  # Inverted OFF
+    )
+
+    assert(instance.output == b''.join(expected_sequence))
+
+# Size tests
+
+def test_set_size_2h():
+    instance = printer.Dummy()
+    instance.set(double_height=True)
+
+    expected_sequence = (
+        TXT_NORMAL, TXT_STYLE['size']['2h'],  # Double height text size
+        TXT_STYLE['flip'][False],  # Flip OFF
+        TXT_STYLE['smooth'][False],  # Smooth OFF
+        TXT_STYLE['bold'][False],  # Bold OFF
+        TXT_STYLE['underline'][0],  # Underline OFF
+        SET_FONT(b'\x00'),  # Default font
+        TXT_STYLE['align']['left'],  # Align left
+        TXT_STYLE['invert'][False]  # Inverted OFF
+    )
+
+    assert (instance.output == b''.join(expected_sequence))
+
+
+def test_set_size_2w():
+    instance = printer.Dummy()
+    instance.set(double_width=True)
+
+    expected_sequence = (
+        TXT_NORMAL, TXT_STYLE['size']['2w'],  # Double width text size
+        TXT_STYLE['flip'][False],  # Flip OFF
+        TXT_STYLE['smooth'][False],  # Smooth OFF
+        TXT_STYLE['bold'][False],  # Bold OFF
+        TXT_STYLE['underline'][0],  # Underline OFF
+        SET_FONT(b'\x00'),  # Default font
+        TXT_STYLE['align']['left'],  # Align left
+        TXT_STYLE['invert'][False]  # Inverted OFF
+    )
+
+    assert (instance.output == b''.join(expected_sequence))
+
+
+def test_set_size_2x():
+    instance = printer.Dummy()
+    instance.set(double_height=True, double_width=True)
+
+    expected_sequence = (
+        TXT_NORMAL, TXT_STYLE['size']['2x'],  # Double text size
+        TXT_STYLE['flip'][False],  # Flip OFF
+        TXT_STYLE['smooth'][False],  # Smooth OFF
+        TXT_STYLE['bold'][False],  # Bold OFF
+        TXT_STYLE['underline'][0],  # Underline OFF
+        SET_FONT(b'\x00'),  # Default font
+        TXT_STYLE['align']['left'],  # Align left
+        TXT_STYLE['invert'][False]  # Inverted OFF
+    )
+
+    assert (instance.output == b''.join(expected_sequence))
+
+
+def test_set_size_custom():
+    instance = printer.Dummy()
+    instance.set(custom_size=True, width=8, height=7)
+
+    expected_sequence = (
+        TXT_SIZE,  # Custom text size, no normal reset
+        six.int2byte(TXT_STYLE['width'][8] + TXT_STYLE['height'][7]),
+        TXT_STYLE['flip'][False],  # Flip OFF
+        TXT_STYLE['smooth'][False],  # Smooth OFF
+        TXT_STYLE['bold'][False],  # Bold OFF
+        TXT_STYLE['underline'][0],  # Underline OFF
+        SET_FONT(b'\x00'),  # Default font
+        TXT_STYLE['align']['left'],  # Align left
+        TXT_STYLE['invert'][False]  # Inverted OFF
+    )
+
+    assert (instance.output == b''.join(expected_sequence))
+
+# Flip
+
+def test_set_flip():
+    instance = printer.Dummy()
+    instance.set(flip=True)
+
+    expected_sequence = (
+        TXT_NORMAL, TXT_STYLE['size']['normal'],  # Normal text size
+        TXT_STYLE['flip'][True],  # Flip ON
+        TXT_STYLE['smooth'][False],  # Smooth OFF
+        TXT_STYLE['bold'][False],  # Bold OFF
+        TXT_STYLE['underline'][0],  # Underline OFF
+        SET_FONT(b'\x00'),  # Default font
+        TXT_STYLE['align']['left'],  # Align left
+        TXT_STYLE['invert'][False]  # Inverted OFF
+    )
+
+    assert (instance.output == b''.join(expected_sequence))
+
+# Smooth
+
+def test_smooth():
+    instance = printer.Dummy()
+    instance.set(smooth=True)
+
+    expected_sequence = (
+        TXT_NORMAL, TXT_STYLE['size']['normal'],  # Normal text size
+        TXT_STYLE['flip'][False],  # Flip OFF
+        TXT_STYLE['smooth'][True],  # Smooth ON
+        TXT_STYLE['bold'][False],  # Bold OFF
+        TXT_STYLE['underline'][0],  # Underline OFF
+        SET_FONT(b'\x00'),  # Default font
+        TXT_STYLE['align']['left'],  # Align left
+        TXT_STYLE['invert'][False]  # Inverted OFF
+    )
+
+    assert(instance.output == b''.join(expected_sequence))
+
+
+# Type
+
+
+def test_set_bold():
+    instance = printer.Dummy()
+    instance.set(bold=True)
+
+    expected_sequence = (
+        TXT_NORMAL, TXT_STYLE['size']['normal'],  # Normal text size
+        TXT_STYLE['flip'][False],  # Flip OFF
+        TXT_STYLE['smooth'][False],  # Smooth OFF
+        TXT_STYLE['bold'][True],  # Bold ON
+        TXT_STYLE['underline'][0],  # Underline OFF
+        SET_FONT(b'\x00'),  # Default font
+        TXT_STYLE['align']['left'],  # Align left
+        TXT_STYLE['invert'][False]  # Inverted OFF
+    )
+
+    assert (instance.output == b''.join(expected_sequence))
+
+
+def test_set_underline():
+    instance = printer.Dummy()
+    instance.set(underline=1)
+
+    expected_sequence = (
+        TXT_NORMAL, TXT_STYLE['size']['normal'],  # Normal text size
+        TXT_STYLE['flip'][False],  # Flip OFF
+        TXT_STYLE['smooth'][False],  # Smooth OFF
+        TXT_STYLE['bold'][False],  # Bold OFF
+        TXT_STYLE['underline'][1],  # Underline ON, type 1
+        SET_FONT(b'\x00'),  # Default font
+        TXT_STYLE['align']['left'],  # Align left
+        TXT_STYLE['invert'][False]  # Inverted OFF
+    )
+
+    assert (instance.output == b''.join(expected_sequence))
+
+
+def test_set_underline2():
+    instance = printer.Dummy()
+    instance.set(underline=2)
+
+    expected_sequence = (
+        TXT_NORMAL, TXT_STYLE['size']['normal'],  # Normal text size
+        TXT_STYLE['flip'][False],  # Flip OFF
+        TXT_STYLE['smooth'][False],  # Smooth OFF
+        TXT_STYLE['bold'][False],  # Bold OFF
+        TXT_STYLE['underline'][2],  # Underline ON, type 2
+        SET_FONT(b'\x00'),  # Default font
+        TXT_STYLE['align']['left'],  # Align left
+        TXT_STYLE['invert'][False]  # Inverted OFF
+    )
+
+    assert (instance.output == b''.join(expected_sequence))
+
+
+# Align
+
+def test_align_center():
+    instance = printer.Dummy()
+    instance.set(align='center')
+
+    expected_sequence = (
+        TXT_NORMAL, TXT_STYLE['size']['normal'],  # Normal text size
+        TXT_STYLE['flip'][False],  # Flip OFF
+        TXT_STYLE['smooth'][False],  # Smooth OFF
+        TXT_STYLE['bold'][False],  # Bold OFF
+        TXT_STYLE['underline'][0],  # Underline OFF
+        SET_FONT(b'\x00'),  # Default font
+        TXT_STYLE['align']['center'],  # Align center
+        TXT_STYLE['invert'][False]  # Inverted OFF
+    )
+
+    assert(instance.output == b''.join(expected_sequence))
+
+
+def test_align_right():
+    instance = printer.Dummy()
+    instance.set(align='right')
+
+    expected_sequence = (
+        TXT_NORMAL, TXT_STYLE['size']['normal'],  # Normal text size
+        TXT_STYLE['flip'][False],  # Flip OFF
+        TXT_STYLE['smooth'][False],  # Smooth OFF
+        TXT_STYLE['bold'][False],  # Bold OFF
+        TXT_STYLE['underline'][0],  # Underline OFF
+        SET_FONT(b'\x00'),  # Default font
+        TXT_STYLE['align']['right'],  # Align right
+        TXT_STYLE['invert'][False]  # Inverted OFF
+    )
+
+    assert(instance.output == b''.join(expected_sequence))
+
+
+# Densities
+
+def test_densities():
+
+    for density in range(8):
+        instance = printer.Dummy()
+        instance.set(density=density)
+
+        expected_sequence = (
+            TXT_NORMAL, TXT_STYLE['size']['normal'],  # Normal text size
+            TXT_STYLE['flip'][False],  # Flip OFF
+            TXT_STYLE['smooth'][False],  # Smooth OFF
+            TXT_STYLE['bold'][False],  # Bold OFF
+            TXT_STYLE['underline'][0],  # Underline OFF
+            SET_FONT(b'\x00'),  # Default font
+            TXT_STYLE['align']['left'],  # Align left
+            TXT_STYLE['density'][density],  # Custom density from 0 to 8
+            TXT_STYLE['invert'][False]  # Inverted OFF
+        )
+
+        assert(instance.output == b''.join(expected_sequence))
+
+
+# Invert
+
+def test_invert():
+    instance = printer.Dummy()
+    instance.set(invert=True)
+
+    expected_sequence = (
+        TXT_NORMAL, TXT_STYLE['size']['normal'],  # Normal text size
+        TXT_STYLE['flip'][False],  # Flip OFF
+        TXT_STYLE['smooth'][False],  # Smooth OFF
+        TXT_STYLE['bold'][False],  # Bold OFF
+        TXT_STYLE['underline'][0],  # Underline OFF
+        SET_FONT(b'\x00'),  # Default font
+        TXT_STYLE['align']['left'],  # Align left
+        TXT_STYLE['invert'][True]  # Inverted ON
+    )
+
+    assert(instance.output == b''.join(expected_sequence))

test/test_function_softbarcode.py

@@ -0,0 +1,16 @@
+#!/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
+import pytest
+
+
+def test_soft_barcode():
+    """just execute soft_barcode
+    """
+    instance = printer.Dummy()
+    instance.soft_barcode("ean8", "1234")
+

test/test_function_text.py

@@ -4,7 +4,7 @@
 :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: GNU GPL v3
+:license: MIT
 """
 
 from __future__ import absolute_import
@@ -12,34 +12,54 @@ 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
-
-import filecmp
-
-devfile = 'testfile'
+import pytest
+import mock
+from hypothesis import given, assume
+import hypothesis.strategies as st
+from escpos.printer import Dummy
 
 
-def setup_testfile():
-    """create a testfile as devfile"""
-    fhandle = open(devfile, 'a')
-    try:
-        os.utime(devfile, None)
-    finally:
-        fhandle.close()
+def get_printer():
+    return Dummy(magic_encode_args={'disabled': True, 'encoding': 'CP437'})
 
 
-def teardown_testfile():
-    """destroy testfile again"""
-    os.remove(devfile)
+@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)
 
 
-@with_setup(setup_testfile, teardown_testfile)
-def test_function_text_dies_ist_ein_test_lf():
-    """test the text printing function with simple string and compare output"""
-    instance = printer.File(devfile=devfile)
-    instance.text('Dies ist ein Test.\n')
-    instance.flush()
-    assert(filecmp.cmp('test/Dies ist ein Test.LF.txt', devfile))
+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.'
+
+
+def test_textln():
+    printer = get_printer()
+    printer.textln('hello, world')
+    assert printer.output == b'hello, world\n'
+
+
+def test_textln_empty():
+    printer = get_printer()
+    printer.textln()
+    assert printer.output == b'\n'
+
+
+def test_ln():
+    printer = get_printer()
+    printer.ln()
+    assert printer.output == b'\n'
+
+
+def test_multiple_ln():
+    printer = get_printer()
+    printer.ln(3)
+    assert printer.output == b'\n\n\n'

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

@@ -5,7 +5,7 @@ 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: GNU GPL v3
+:license: MIT
 """
 
 from escpos.image import EscposImage
@@ -43,6 +43,20 @@ def test_image_white():
         _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.

test/test_load_module.py

@@ -4,7 +4,7 @@
 :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: GNU GPL v3
+:license: MIT
 """
 
 from __future__ import absolute_import
@@ -12,30 +12,10 @@ 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_instantiation():
     """test the instantiation of a escpos-printer class and basic printing"""
-    instance = printer.File(devfile=devfile)
+    instance = printer.Dummy()
     instance.text('This is a test\n')

test/test_magicencode.py

@@ -0,0 +1,127 @@
+#!/usr/bin/python
+#  -*- coding: utf-8 -*-
+"""tests for the magic encode module
+
+: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
+from nose.tools import raises, assert_raises
+from hypothesis import given, example
+import hypothesis.strategies as st
+from escpos.magicencode import MagicEncode, Encoder
+from escpos.katakana import encode_katakana
+from escpos.exceptions import CharCodeError, Error
+
+
+class TestEncoder:
+    """
+    Tests the single encoders.
+    """
+
+    def test_can_encode(self):
+        assert not Encoder({'CP437': 1}).can_encode('CP437', u'€')
+        assert Encoder({'CP437': 1}).can_encode('CP437', u'á')
+        assert not Encoder({'foobar': 1}).can_encode('foobar', 'a')
+
+    def test_find_suitable_encoding(self):
+        assert not Encoder({'CP437': 1}).find_suitable_encoding(u'€')
+        assert Encoder({'CP858': 1}).find_suitable_encoding(u'€') == 'CP858'
+
+    @raises(ValueError)
+    def test_get_encoding(self):
+        Encoder({}).get_encoding_name('latin1')
+
+
+class TestMagicEncode:
+    """
+    Tests the magic encode functionality.
+    """
+
+    class TestInit:
+        """
+        Test initialization.
+        """
+
+        def test_disabled_requires_encoding(self, driver):
+            """
+            Test that disabled without encoder raises an error.
+
+            :param driver:
+            """
+            with pytest.raises(Error):
+                MagicEncode(driver, disabled=True)
+
+    class TestWriteWithEncoding:
+
+        def test_init_from_none(self, driver):
+            encode = MagicEncode(driver, encoding=None)
+            encode.write_with_encoding('CP858', '€ ist teuro.')
+            assert driver.output == b'\x1bt\x13\xd5 ist teuro.'
+
+        def test_change_from_another(self, driver):
+            encode = MagicEncode(driver, encoding='CP437')
+            encode.write_with_encoding('CP858', '€ ist teuro.')
+            assert driver.output == b'\x1bt\x13\xd5 ist teuro.'
+
+        def test_no_change(self, driver):
+            encode = MagicEncode(driver, encoding='CP858')
+            encode.write_with_encoding('CP858', '€ ist teuro.')
+            assert driver.output == b'\xd5 ist teuro.'
+
+    class TestWrite:
+
+        def test_write(self, driver):
+            encode = MagicEncode(driver)
+            encode.write('€ ist teuro.')
+            assert driver.output == b'\x1bt\x0f\xa4 ist teuro.'
+
+        def test_write_disabled(self, driver):
+            encode = MagicEncode(driver, encoding='CP437', disabled=True)
+            encode.write('€ ist teuro.')
+            assert driver.output == b'? ist teuro.'
+
+        def test_write_no_codepage(self, driver):
+            encode = MagicEncode(
+                driver, defaultsymbol="_", encoder=Encoder({'CP437': 1}),
+                encoding='CP437')
+            encode.write(u'€ ist teuro.')
+            assert driver.output == b'_ ist teuro.'
+
+    class TestForceEncoding:
+
+        def test(self, driver):
+            encode = MagicEncode(driver)
+            encode.force_encoding('CP437')
+            assert driver.output == b'\x1bt\x00'
+
+            encode.write('€ ist teuro.')
+            assert driver.output == b'\x1bt\x00? ist teuro.'
+
+
+try:
+    import jaconv
+except ImportError:
+    jaconv = None
+
+
+@pytest.mark.skipif(not jaconv, reason="jaconv not installed")
+class TestKatakana:
+    @given(st.text())
+    @example("カタカナ")
+    @example("あいうえお")
+    @example("ﾊﾝｶｸｶﾀｶﾅ")
+    def test_accept(self, text):
+        encode_katakana(text)
+
+    def test_result(self):
+        assert encode_katakana('カタカナ') == b'\xb6\xc0\xb6\xc5'
+        assert encode_katakana("あいうえお") == b'\xb1\xb2\xb3\xb4\xb5'

test/test_printer_file.py

@@ -0,0 +1,79 @@
+#!/usr/bin/python
+#  -*- coding: utf-8 -*-
+"""tests for the File printer
+
+: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 six
+
+import pytest
+from hypothesis import given, settings
+from hypothesis.strategies import text
+
+import escpos.printer as printer
+
+if six.PY3:
+    mock_open_call = 'builtins.open'
+else:
+    mock_open_call = '__builtin__.open'
+
+
+@pytest.mark.skip("this test is broken and has to be fixed or discarded")
+@settings(use_coverage=False)
+@given(path=text())
+def test_load_file_printer(mocker, path):
+    """test the loading of the file-printer"""
+    mock_escpos = mocker.patch('escpos.escpos.Escpos.__init__')
+    mock_open = mocker.patch(mock_open_call)
+    printer.File(devfile=path)
+    assert mock_escpos.called
+    mock_open.assert_called_with(path, "wb")
+
+
+@pytest.mark.skip("this test is broken and has to be fixed or discarded")
+@settings(deadline=None, use_coverage=False)
+@given(txt=text())
+def test_auto_flush(mocker, txt):
+    """test auto_flush in file-printer"""
+    mock_escpos = mocker.patch('escpos.escpos.Escpos.__init__')
+    mock_open = mocker.patch(mock_open_call)
+    mock_device = mocker.patch.object(printer.File, 'device')
+
+    p = printer.File(auto_flush=False)
+    # inject the mocked device-object
+    p.device = mock_device
+    p._raw(txt)
+    assert not mock_device.flush.called
+    mock_device.reset_mock()
+    p = printer.File(auto_flush=True)
+    # inject the mocked device-object
+    p.device = mock_device
+    p._raw(txt)
+    assert mock_device.flush.called
+
+
+@pytest.mark.skip("this test is broken and has to be fixed or discarded")
+@settings(deadline=None, use_coverage=False)
+@given(txt=text())
+def test_flush_on_close(mocker, txt):
+    """test flush on close in file-printer"""
+    mock_open = mocker.patch(mock_open_call)
+    mock_device = mocker.patch.object(printer.File, 'device')
+
+    p = printer.File(auto_flush=False)
+    # inject the mocked device-object
+    p.device = mock_device
+    p._raw(txt)
+    assert not mock_device.flush.called
+    p.close()
+    assert mock_device.flush.called
+    assert mock_device.close.called

test/test_profile.py

@@ -0,0 +1,38 @@
+import pytest
+from escpos.capabilities import get_profile, NotSupported, BARCODE_B, Profile
+
+
+@pytest.fixture
+def profile():
+    return get_profile('default')
+
+
+class TestBaseProfile:
+    """Test the `BaseProfile` class.
+    """
+
+    def test_get_font(self, profile):
+        with pytest.raises(NotSupported):
+            assert profile.get_font('3')
+        assert profile.get_font(1) == 1
+        assert profile.get_font('a') == 0
+
+    def test_supports(self, profile):
+        assert not profile.supports('asdf asdf')
+        assert profile.supports(BARCODE_B)
+
+    def test_get_columns(self, profile):
+        assert profile.get_columns('a') > 5
+        with pytest.raises(NotSupported):
+            assert profile.get_columns('asdfasdf')
+
+
+class TestCustomProfile:
+    """Test custom profile options with the `Profile` class.
+    """
+
+    def test_columns(self):
+        assert Profile(columns=10).get_columns('sdfasdf') == 10
+
+    def test_features(self):
+        assert Profile(features={'foo': True}).supports('foo')

test/test_raise_arbitrary_error.py

@@ -0,0 +1,32 @@
+#!/usr/bin/python
+"""test the raising of errors with the error module
+
+:author: `Patrick Kanzler <patrick.kanzler@fablab.fau.de>`_
+:organization: `python-escpos <https://github.com/python-escpos>`_
+:copyright: Copyright (c) 2017 `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 escpos
+import escpos.exceptions
+
+
+def test_raise_error_wrongly():
+    """raise error the wrong way
+
+    should reproduce https://github.com/python-escpos/python-escpos/issues/257
+    """
+    with pytest.raises(AttributeError):
+        raise escpos.Error("This should raise an AttributeError.")
+
+
+def tests_raise_error():
+    """raise error the right way"""
+    with pytest.raises(escpos.exceptions.Error):
+        raise escpos.exceptions.Error("This should raise an error.")

test/test_with_statement.py

@@ -4,7 +4,7 @@
 :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: GNU GPL v3
+:license: MIT
 """
 
 from __future__ import absolute_import

tox.ini

@@ -1,17 +1,36 @@
 [tox]
-envlist = py27, py34, py35, docs
+envlist = py27, py34, py35, docs, flake8
 
 [testenv]
 deps = nose
+       jaconv
        coverage
        scripttest
        mock
-       hypothesis
-commands = nosetests --with-coverage --cover-erase --cover-branches
+       pytest!=3.2.0,!=3.3.0
+       pytest-cov
+       pytest-mock
+       hypothesis!=3.56.9
+       viivakoodi
+commands = py.test --cov escpos
+passenv = ESCPOS_CAPABILITIES_PICKLE_DIR ESCPOS_CAPABILITIES_FILE CI TRAVIS TRAVIS_* APPVEYOR APPVEYOR_* CODECOV_*
 
 [testenv:docs]
 basepython = python
 changedir = doc
-deps = sphinx
+deps = sphinx>=1.5.1
        setuptools_scm
+       viivakoodi
 commands = sphinx-build -W -b html -d {envtmpdir}/doctrees .  {envtmpdir}/html
+
+[testenv:flake8]
+basepython = python
+# TODO add flake8-print after adding logging
+# TODO add flake8-docstrings
+deps = flake8
+       flake8-coding
+       flake8-copyright
+       flake8-future-import
+       flake8-quotes
+       flake8-import-order
+commands = flake8