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REFACTOR use bytes in constants-section 

adds six for cross-version int/byte-conversion
This commit is contained in:
Patrick Kanzler 2016-03-03 04:21:35 +01:00
parent 7005ba5899
commit 5d5412ba73
3 changed files with 123 additions and 118 deletions
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234
escpos/constants.py
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@ -13,53 +13,55 @@ moved to `capabilities` as in `escpos-php by @mike42 <https://github.com/mike42/
from __future__ import absolute_import from __future__ import absolute_import
from __future__ import division from __future__ import division
from __future__ import print_function from __future__ import print_function
#from __future__ import unicode_literals from __future__ import unicode_literals
import six
# Control characters # Control characters
# as labelled in http://www.novopos.ch/client/EPSON/TM-T20/TM-T20_eng_qr.pdf # as labelled in http://www.novopos.ch/client/EPSON/TM-T20/TM-T20_eng_qr.pdf
NUL = '\x00' NUL = b'\x00'
EOT = '\x04' EOT = b'\x04'
ENQ = '\x05' ENQ = b'\x05'
DLE = '\x10' DLE = b'\x10'
DC4 = '\x14' DC4 = b'\x14'
CAN = '\x18' CAN = b'\x18'
ESC = '\x1b' ESC = b'\x1b'
FS = '\x1c' FS = b'\x1c'
GS = '\x1d' GS = b'\x1d'
# Feed control sequences # Feed control sequences
CTL_LF = '\n' # Print and line feed CTL_LF = b'\n' # Print and line feed
CTL_FF = '\f' # Form feed CTL_FF = b'\f' # Form feed
CTL_CR = '\r' # Carriage return CTL_CR = b'\r' # Carriage return
CTL_HT = '\t' # Horizontal tab CTL_HT = b'\t' # Horizontal tab
CTL_SET_HT = ESC + '\x44' # Set horizontal tab positions CTL_SET_HT = ESC + b'\x44' # Set horizontal tab positions
CTL_VT = '\v' # Vertical tab CTL_VT = b'\v' # Vertical tab
# Printer hardware # Printer hardware
HW_INIT = ESC + '@' # Clear data in buffer and reset modes HW_INIT = ESC + b'@' # Clear data in buffer and reset modes
HW_SELECT = ESC + '=\x01' # Printer select HW_SELECT = ESC + b'=\x01' # Printer select
HW_RESET = ESC + '\x3f\x0a\x00' # Reset printer hardware HW_RESET = ESC + b'\x3f\x0a\x00' # Reset printer hardware
# (TODO: Where is this specified?) # (TODO: Where is this specified?)
#{ Cash Drawer (ESC p <pin> <on time: 2*ms> <off time: 2*ms>) #{ Cash Drawer (ESC p <pin> <on time: 2*ms> <off time: 2*ms>)
_CASH_DRAWER = lambda m, t1='', t2='': ESC + 'p' + m + chr(t1) + chr(t2) _CASH_DRAWER = lambda m, t1='', t2='': ESC + b'p' + m + six.int2byte(t1) + six.int2byte(t2)
CD_KICK_2 = _CASH_DRAWER('\x00', 50, 50) # Sends a pulse to pin 2 [] CD_KICK_2 = _CASH_DRAWER(b'\x00', 50, 50) # Sends a pulse to pin 2 []
CD_KICK_5 = _CASH_DRAWER('\x01', 50, 50) # Sends a pulse to pin 5 [] CD_KICK_5 = _CASH_DRAWER(b'\x01', 50, 50) # Sends a pulse to pin 5 []
# Paper Cutter # Paper Cutter
_CUT_PAPER = lambda m: GS + 'V' + m _CUT_PAPER = lambda m: GS + b'V' + m
PAPER_FULL_CUT = _CUT_PAPER('\x00') # Full cut paper PAPER_FULL_CUT = _CUT_PAPER(b'\x00') # Full cut paper
PAPER_PART_CUT = _CUT_PAPER('\x01') # Partial cut paper PAPER_PART_CUT = _CUT_PAPER(b'\x01') # Partial cut paper
# Text format # Text format
# TODO: Acquire the "ESC/POS Application Programming Guide for Paper Roll # TODO: Acquire the "ESC/POS Application Programming Guide for Paper Roll
# Printers" and tidy up this stuff too. # Printers" and tidy up this stuff too.
TXT_FLIP_ON = ESC + '\x7b\x01' TXT_FLIP_ON = ESC + b'\x7b\x01'
TXT_FLIP_OFF = ESC + '\x7b\x00' TXT_FLIP_OFF = ESC + b'\x7b\x00'
TXT_SMOOTH_ON = GS + '\x62\x01' TXT_SMOOTH_ON = GS + b'\x62\x01'
TXT_SMOOTH_OFF = GS + '\x62\x00' TXT_SMOOTH_OFF = GS + b'\x62\x00'
TXT_SIZE = GS + '!' TXT_SIZE = GS + b'!'
TXT_WIDTH = {1: 0x00, TXT_WIDTH = {1: 0x00,
2: 0x10, 2: 0x10,
3: 0x20, 3: 0x20,
@ -76,99 +78,99 @@ TXT_HEIGHT = {1: 0x00,
6: 0x05, 6: 0x05,
7: 0x06, 7: 0x06,
8: 0x07} 8: 0x07}
TXT_NORMAL = ESC + '!\x00' # Normal text TXT_NORMAL = ESC + b'!\x00' # Normal text
TXT_2HEIGHT = ESC + '!\x10' # Double height text TXT_2HEIGHT = ESC + b'!\x10' # Double height text
TXT_2WIDTH = ESC + '!\x20' # Double width text TXT_2WIDTH = ESC + b'!\x20' # Double width text
TXT_4SQUARE = ESC + '!\x30' # Quad area text TXT_4SQUARE = ESC + b'!\x30' # Quad area text
TXT_UNDERL_OFF = ESC + '\x2d\x00' # Underline font OFF TXT_UNDERL_OFF = ESC + b'\x2d\x00' # Underline font OFF
TXT_UNDERL_ON = ESC + '\x2d\x01' # Underline font 1-dot ON TXT_UNDERL_ON = ESC + b'\x2d\x01' # Underline font 1-dot ON
TXT_UNDERL2_ON = ESC + '\x2d\x02' # Underline font 2-dot ON TXT_UNDERL2_ON = ESC + b'\x2d\x02' # Underline font 2-dot ON
TXT_BOLD_OFF = ESC + '\x45\x00' # Bold font OFF TXT_BOLD_OFF = ESC + b'\x45\x00' # Bold font OFF
TXT_BOLD_ON = ESC + '\x45\x01' # Bold font ON TXT_BOLD_ON = ESC + b'\x45\x01' # Bold font ON
TXT_FONT_A = ESC + '\x4d\x00' # Font type A TXT_FONT_A = ESC + b'\x4d\x00' # Font type A
TXT_FONT_B = ESC + '\x4d\x01' # Font type B TXT_FONT_B = ESC + b'\x4d\x01' # Font type B
TXT_ALIGN_LT = ESC + '\x61\x00' # Left justification TXT_ALIGN_LT = ESC + b'\x61\x00' # Left justification
TXT_ALIGN_CT = ESC + '\x61\x01' # Centering TXT_ALIGN_CT = ESC + b'\x61\x01' # Centering
TXT_ALIGN_RT = ESC + '\x61\x02' # Right justification TXT_ALIGN_RT = ESC + b'\x61\x02' # Right justification
TXT_INVERT_ON = GS + '\x42\x01' # Inverse Printing ON TXT_INVERT_ON = GS + b'\x42\x01' # Inverse Printing ON
TXT_INVERT_OFF = GS + '\x42\x00' # Inverse Printing OFF TXT_INVERT_OFF = GS + b'\x42\x00' # Inverse Printing OFF
# Char code table # Char code table
CHARCODE_PC437 = ESC + '\x74\x00' # USA: Standard Europe CHARCODE_PC437 = ESC + b'\x74\x00' # USA: Standard Europe
CHARCODE_JIS = ESC + '\x74\x01' # Japanese Katakana CHARCODE_JIS = ESC + b'\x74\x01' # Japanese Katakana
CHARCODE_PC850 = ESC + '\x74\x02' # Multilingual CHARCODE_PC850 = ESC + b'\x74\x02' # Multilingual
CHARCODE_PC860 = ESC + '\x74\x03' # Portuguese CHARCODE_PC860 = ESC + b'\x74\x03' # Portuguese
CHARCODE_PC863 = ESC + '\x74\x04' # Canadian-French CHARCODE_PC863 = ESC + b'\x74\x04' # Canadian-French
CHARCODE_PC865 = ESC + '\x74\x05' # Nordic CHARCODE_PC865 = ESC + b'\x74\x05' # Nordic
CHARCODE_WEU = ESC + '\x74\x06' # Simplified Kanji, Hirakana CHARCODE_WEU = ESC + b'\x74\x06' # Simplified Kanji, Hirakana
CHARCODE_GREEK = ESC + '\x74\x07' # Simplified Kanji CHARCODE_GREEK = ESC + b'\x74\x07' # Simplified Kanji
CHARCODE_HEBREW = ESC + '\x74\x08' # Simplified Kanji CHARCODE_HEBREW = ESC + b'\x74\x08' # Simplified Kanji
CHARCODE_PC1252 = ESC + '\x74\x11' # Western European Windows Code Set CHARCODE_PC1252 = ESC + b'\x74\x11' # Western European Windows Code Set
CHARCODE_PC866 = ESC + '\x74\x12' # Cirillic #2 CHARCODE_PC866 = ESC + b'\x74\x12' # Cirillic #2
CHARCODE_PC852 = ESC + '\x74\x13' # Latin 2 CHARCODE_PC852 = ESC + b'\x74\x13' # Latin 2
CHARCODE_PC858 = ESC + '\x74\x14' # Euro CHARCODE_PC858 = ESC + b'\x74\x14' # Euro
CHARCODE_THAI42 = ESC + '\x74\x15' # Thai character code 42 CHARCODE_THAI42 = ESC + b'\x74\x15' # Thai character code 42
CHARCODE_THAI11 = ESC + '\x74\x16' # Thai character code 11 CHARCODE_THAI11 = ESC + b'\x74\x16' # Thai character code 11
CHARCODE_THAI13 = ESC + '\x74\x17' # Thai character code 13 CHARCODE_THAI13 = ESC + b'\x74\x17' # Thai character code 13
CHARCODE_THAI14 = ESC + '\x74\x18' # Thai character code 14 CHARCODE_THAI14 = ESC + b'\x74\x18' # Thai character code 14
CHARCODE_THAI16 = ESC + '\x74\x19' # Thai character code 16 CHARCODE_THAI16 = ESC + b'\x74\x19' # Thai character code 16
CHARCODE_THAI17 = ESC + '\x74\x1a' # Thai character code 17 CHARCODE_THAI17 = ESC + b'\x74\x1a' # Thai character code 17
CHARCODE_THAI18 = ESC + '\x74\x1b' # Thai character code 18 CHARCODE_THAI18 = ESC + b'\x74\x1b' # Thai character code 18
# Barcode format # Barcode format
_SET_BARCODE_TXT_POS = lambda n: GS + 'H' + n _SET_BARCODE_TXT_POS = lambda n: GS + b'H' + n
BARCODE_TXT_OFF = _SET_BARCODE_TXT_POS('\x00') # HRI barcode chars OFF BARCODE_TXT_OFF = _SET_BARCODE_TXT_POS(b'\x00') # HRI barcode chars OFF
BARCODE_TXT_ABV = _SET_BARCODE_TXT_POS('\x01') # HRI barcode chars above BARCODE_TXT_ABV = _SET_BARCODE_TXT_POS(b'\x01') # HRI barcode chars above
BARCODE_TXT_BLW = _SET_BARCODE_TXT_POS('\x02') # HRI barcode chars below BARCODE_TXT_BLW = _SET_BARCODE_TXT_POS(b'\x02') # HRI barcode chars below
BARCODE_TXT_BTH = _SET_BARCODE_TXT_POS('\x03') # HRI both above and below BARCODE_TXT_BTH = _SET_BARCODE_TXT_POS(b'\x03') # HRI both above and below
_SET_HRI_FONT = lambda n: GS + 'f' + n _SET_HRI_FONT = lambda n: GS + b'f' + n
BARCODE_FONT_A = _SET_HRI_FONT('\x00') # Font type A for HRI barcode chars BARCODE_FONT_A = _SET_HRI_FONT(b'\x00') # Font type A for HRI barcode chars
BARCODE_FONT_B = _SET_HRI_FONT('\x01') # Font type B for HRI barcode chars BARCODE_FONT_B = _SET_HRI_FONT(b'\x01') # Font type B for HRI barcode chars
BARCODE_HEIGHT = GS + 'h' # Barcode Height [1-255] BARCODE_HEIGHT = GS + b'h' # Barcode Height [1-255]
BARCODE_WIDTH = GS + 'w' # Barcode Width [2-6] BARCODE_WIDTH = GS + b'w' # Barcode Width [2-6]
#NOTE: This isn't actually an ESC/POS command. It's the common prefix to the #NOTE: This isn't actually an ESC/POS command. It's the common prefix to the
# two "print bar code" commands: # two "print bar code" commands:
# - Type A: "GS k <type as integer> <data> NUL" # - Type A: "GS k <type as integer> <data> NUL"
# - TYPE B: "GS k <type as letter> <data length> <data>" # - TYPE B: "GS k <type as letter> <data length> <data>"
# The latter command supports more barcode types # The latter command supports more barcode types
_SET_BARCODE_TYPE = lambda m: GS + 'k' + m _SET_BARCODE_TYPE = lambda m: GS + b'k' + six.int2byte(m)
# Barcodes for printing function type A # Barcodes for printing function type A
BARCODE_TYPE_A = { BARCODE_TYPE_A = {
'UPC-A': _SET_BARCODE_TYPE(chr(0)), 'UPC-A': _SET_BARCODE_TYPE(0),
'UPC-E': _SET_BARCODE_TYPE(chr(1)), 'UPC-E': _SET_BARCODE_TYPE(1),
'EAN13': _SET_BARCODE_TYPE(chr(2)), 'EAN13': _SET_BARCODE_TYPE(2),
'EAN8': _SET_BARCODE_TYPE(chr(3)), 'EAN8': _SET_BARCODE_TYPE(3),
'CODE39': _SET_BARCODE_TYPE(chr(4)), 'CODE39': _SET_BARCODE_TYPE(4),
'ITF': _SET_BARCODE_TYPE(chr(5)), 'ITF': _SET_BARCODE_TYPE(5),
'NW7': _SET_BARCODE_TYPE(chr(6)), 'NW7': _SET_BARCODE_TYPE(6),
'CODABAR': _SET_BARCODE_TYPE(chr(6)), # Same as NW7 'CODABAR': _SET_BARCODE_TYPE(6), # Same as NW7
} }
# Barcodes for printing function type B # Barcodes for printing function type B
# The first 8 are the same barcodes as type A # The first 8 are the same barcodes as type A
BARCODE_TYPE_B = { BARCODE_TYPE_B = {
'UPC-A': _SET_BARCODE_TYPE(chr(65)), 'UPC-A': _SET_BARCODE_TYPE(65),
'UPC-E': _SET_BARCODE_TYPE(chr(66)), 'UPC-E': _SET_BARCODE_TYPE(66),
'EAN13': _SET_BARCODE_TYPE(chr(67)), 'EAN13': _SET_BARCODE_TYPE(67),
'EAN8': _SET_BARCODE_TYPE(chr(68)), 'EAN8': _SET_BARCODE_TYPE(68),
'CODE39': _SET_BARCODE_TYPE(chr(69)), 'CODE39': _SET_BARCODE_TYPE(69),
'ITF': _SET_BARCODE_TYPE(chr(70)), 'ITF': _SET_BARCODE_TYPE(70),
'NW7': _SET_BARCODE_TYPE(chr(71)), 'NW7': _SET_BARCODE_TYPE(71),
'CODABAR': _SET_BARCODE_TYPE(chr(71)), # Same as NW7 'CODABAR': _SET_BARCODE_TYPE(71), # Same as NW7
'CODE93': _SET_BARCODE_TYPE(chr(72)), 'CODE93': _SET_BARCODE_TYPE(72),
# These are all the same barcode, but using different charcter sets # These are all the same barcode, but using different charcter sets
'CODE128A': _SET_BARCODE_TYPE(chr(73) + '{A'), # CODE128 character set A 'CODE128A': _SET_BARCODE_TYPE(73) + b'{A', # CODE128 character set A
'CODE128B': _SET_BARCODE_TYPE(chr(73) + '{B'), # CODE128 character set B 'CODE128B': _SET_BARCODE_TYPE(73) + b'{B', # CODE128 character set B
'CODE128C': _SET_BARCODE_TYPE(chr(73) + '{C'), # CODE128 character set C 'CODE128C': _SET_BARCODE_TYPE(73) + b'{C', # CODE128 character set C
'GS1-128': _SET_BARCODE_TYPE(chr(74)), 'GS1-128': _SET_BARCODE_TYPE(74),
'GS1 DATABAR OMNIDIRECTIONAL': _SET_BARCODE_TYPE(chr(75)), 'GS1 DATABAR OMNIDIRECTIONAL': _SET_BARCODE_TYPE(75),
'GS1 DATABAR TRUNCATED': _SET_BARCODE_TYPE(chr(76)), 'GS1 DATABAR TRUNCATED': _SET_BARCODE_TYPE(76),
'GS1 DATABAR LIMITED': _SET_BARCODE_TYPE(chr(77)), 'GS1 DATABAR LIMITED': _SET_BARCODE_TYPE(77),
'GS1 DATABAR EXPANDED': _SET_BARCODE_TYPE(chr(78)), 'GS1 DATABAR EXPANDED': _SET_BARCODE_TYPE(78),
} }
BARCODE_TYPES = { BARCODE_TYPES = {
@ -180,19 +182,19 @@ BARCODE_TYPES = {
# Image format # Image format
# NOTE: _PRINT_RASTER_IMG is the obsolete ESC/POS "print raster bit image" # NOTE: _PRINT_RASTER_IMG is the obsolete ESC/POS "print raster bit image"
# command. The constants include a fragment of the data's header. # command. The constants include a fragment of the data's header.
_PRINT_RASTER_IMG = lambda data: GS + 'v0' + data _PRINT_RASTER_IMG = lambda data: GS + b'v0' + data
S_RASTER_N = _PRINT_RASTER_IMG('\x00') # Set raster image normal size S_RASTER_N = _PRINT_RASTER_IMG(b'\x00') # Set raster image normal size
S_RASTER_2W = _PRINT_RASTER_IMG('\x01') # Set raster image double width S_RASTER_2W = _PRINT_RASTER_IMG(b'\x01') # Set raster image double width
S_RASTER_2H = _PRINT_RASTER_IMG('\x02') # Set raster image double height S_RASTER_2H = _PRINT_RASTER_IMG(b'\x02') # Set raster image double height
S_RASTER_Q = _PRINT_RASTER_IMG('\x03') # Set raster image quadruple S_RASTER_Q = _PRINT_RASTER_IMG(b'\x03') # Set raster image quadruple
# Printing Density # Printing Density
PD_N50 = GS + '\x7c\x00' # Printing Density -50% PD_N50 = GS + b'\x7c\x00' # Printing Density -50%
PD_N37 = GS + '\x7c\x01' # Printing Density -37.5% PD_N37 = GS + b'\x7c\x01' # Printing Density -37.5%
PD_N25 = GS + '\x7c\x02' # Printing Density -25% PD_N25 = GS + b'\x7c\x02' # Printing Density -25%
PD_N12 = GS + '\x7c\x03' # Printing Density -12.5% PD_N12 = GS + b'\x7c\x03' # Printing Density -12.5%
PD_0 = GS + '\x7c\x04' # Printing Density 0% PD_0 = GS + b'\x7c\x04' # Printing Density 0%
PD_P50 = GS + '\x7c\x08' # Printing Density +50% PD_P50 = GS + b'\x7c\x08' # Printing Density +50%
PD_P37 = GS + '\x7c\x07' # Printing Density +37.5% PD_P37 = GS + b'\x7c\x07' # Printing Density +37.5%
PD_P25 = GS + '\x7c\x06' # Printing Density +25% PD_P25 = GS + b'\x7c\x06' # Printing Density +25%
PD_P12 = GS + '\x7c\x05' # Printing Density +12.5% PD_P12 = GS + b'\x7c\x05' # Printing Density +12.5%

6
escpos/escpos.py
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@ -12,7 +12,9 @@ This module contains the abstract base class :py:class:`Escpos`.
from __future__ import absolute_import from __future__ import absolute_import
from __future__ import division from __future__ import division
from __future__ import print_function from __future__ import print_function
#from __future__ import unicode_literals from __future__ import unicode_literals
import six
try: try:
import Image import Image
@ -517,7 +519,7 @@ class Escpos(object):
elif width == 1 and height == 1: elif width == 1 and height == 1:
self._raw(TXT_NORMAL) self._raw(TXT_NORMAL)
elif 1 <= width <= 8 and 1 <= height <= 8 and isinstance(width, int) and isinstance(height, int): elif 1 <= width <= 8 and 1 <= height <= 8 and isinstance(width, int) and isinstance(height, int):
self._raw(TXT_SIZE + chr(TXT_WIDTH[width] + TXT_HEIGHT[height])) self._raw(TXT_SIZE + six.int2byte(TXT_WIDTH[width] + TXT_HEIGHT[height]))
else: else:
raise SetVariableError() raise SetVariableError()
# Upside down # Upside down

1
setup.py
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@ -70,6 +70,7 @@ setup(
'Pillow>=2.0', 'Pillow>=2.0',
'qrcode>=4.0', 'qrcode>=4.0',
'pyserial', 'pyserial',
'six',
], ],
tests_require=['tox', 'nose'], tests_require=['tox', 'nose'],
cmdclass={'test': Tox}, cmdclass={'test': Tox},