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escpos module fixed for python 3?

This commit is contained in:
Adusso 2014-05-31 17:36:00 +03:00
parent 916de838e0
commit b78f8c9807
5 changed files with 73 additions and 60 deletions
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92
escpos/constants.py
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@ -1,54 +1,56 @@
""" ESC/POS Commands (Constants) """ """ ESC/POS Commands (Constants) """
from escpos.utils import hex2bytes
# Feed control sequences # Feed control sequences
CTL_LF = b'\x0a' # Print and line feed CTL_LF = hex2bytes('0a') # Print and line feed
CTL_FF = b'\x0c' # Form feed CTL_FF = hex2bytes('0c') # Form feed
CTL_CR = b'\x0d' # Carriage return CTL_CR = hex2bytes('0d') # Carriage return
CTL_HT = b'\x09' # Horizontal tab CTL_HT = hex2bytes('09') # Horizontal tab
CTL_VT = b'\x0b' # Vertical tab CTL_VT = hex2bytes('0b') # Vertical tab
# Printer hardware # Printer hardware
HW_INIT = b'\x1b\x40' # Clear data in buffer and reset modes HW_INIT = hex2bytes('1b40') # Clear data in buffer and reset modes
HW_SELECT = b'\x1b\x3d\x01' # Printer select HW_SELECT = hex2bytes('1b3d01') # Printer select
HW_RESET = b'\x1b\x3f\x0a\x00' # Reset printer hardware HW_RESET = hex2bytes('1b3f0a00') # Reset printer hardware
# Cash Drawer # Cash Drawer
CD_KICK_2 = b'\x1b\x70\x00' # Sends a pulse to pin 2 [] CD_KICK_2 = hex2bytes('1b7000') # Sends a pulse to pin 2 []
CD_KICK_5 = b'\x1b\x70\x01' # Sends a pulse to pin 5 [] CD_KICK_5 = hex2bytes('1b7001') # Sends a pulse to pin 5 []
# Paper # Paper
PAPER_FULL_CUT = b'\x1d\x56\x00' # Full cut paper PAPER_FULL_CUT = hex2bytes('1d5600') # Full cut paper
PAPER_PART_CUT = b'\x1d\x56\x01' # Partial cut paper PAPER_PART_CUT = hex2bytes('1d5601') # Partial cut paper
# Text format # Text format
TXT_NORMAL = b'\x1b\x21\x00' # Normal text TXT_NORMAL = hex2bytes('1b2100') # Normal text
TXT_2HEIGHT = b'\x1b\x21\x10' # Double height text TXT_2HEIGHT = hex2bytes('1b2110') # Double height text
TXT_2WIDTH = b'\x1b\x21\x20' # Double width text TXT_2WIDTH = hex2bytes('1b2120') # Double width text
TXT_4SQUARE = b'\x1b\x21\x30' # Quad area text TXT_4SQUARE = hex2bytes('1b2130') # Quad area text
TXT_UNDERL_OFF = b'\x1b\x2d\x00' # Underline font OFF TXT_UNDERL_OFF = hex2bytes('1b2d00') # Underline font OFF
TXT_UNDERL_ON = b'\x1b\x2d\x01' # Underline font 1-dot ON TXT_UNDERL_ON = hex2bytes('1b2d01') # Underline font 1-dot ON
TXT_UNDERL2_ON = b'\x1b\x2d\x02' # Underline font 2-dot ON TXT_UNDERL2_ON = hex2bytes('1b2d02') # Underline font 2-dot ON
TXT_BOLD_OFF = b'\x1b\x45\x00' # Bold font OFF TXT_BOLD_OFF = hex2bytes('1b4500') # Bold font OFF
TXT_BOLD_ON = b'\x1b\x45\x01' # Bold font ON TXT_BOLD_ON = hex2bytes('1b4501') # Bold font ON
TXT_FONT_A = b'\x1b\x4d\x00' # Font type A TXT_FONT_A = hex2bytes('1b4d00') # Font type A
TXT_FONT_B = b'\x1b\x4d\x01' # Font type B TXT_FONT_B = hex2bytes('1b4d01') # Font type B
TXT_ALIGN_LT = b'\x1b\x61\x00' # Left justification TXT_ALIGN_LT = hex2bytes('1b6100') # Left justification
TXT_ALIGN_CT = b'\x1b\x61\x01' # Centering TXT_ALIGN_CT = hex2bytes('1b6101') # Centering
TXT_ALIGN_RT = b'\x1b\x61\x02' # Right justification TXT_ALIGN_RT = hex2bytes('1b6102') # Right justification
# Barcode format # Barcode format
BARCODE_TXT_OFF = b'\x1d\x48\x00' # HRI barcode chars OFF BARCODE_TXT_OFF = hex2bytes('1d4800') # HRI barcode chars OFF
BARCODE_TXT_ABV = b'\x1d\x48\x01' # HRI barcode chars above BARCODE_TXT_ABV = hex2bytes('1d4801') # HRI barcode chars above
BARCODE_TXT_BLW = b'\x1d\x48\x02' # HRI barcode chars below BARCODE_TXT_BLW = hex2bytes('1d4802') # HRI barcode chars below
BARCODE_TXT_BTH = b'\x1d\x48\x03' # HRI barcode chars both above and below BARCODE_TXT_BTH = hex2bytes('1d4803') # HRI barcode chars both above and below
BARCODE_FONT_A = b'\x1d\x66\x00' # Font type A for HRI barcode chars BARCODE_FONT_A = hex2bytes('1d6600') # Font type A for HRI barcode chars
BARCODE_FONT_B = b'\x1d\x66\x01' # Font type B for HRI barcode chars BARCODE_FONT_B = hex2bytes('1d6601') # Font type B for HRI barcode chars
BARCODE_HEIGHT = b'\x1d\x68\x64' # Barcode Height [1-255] BARCODE_HEIGHT = hex2bytes('1d6864') # Barcode Height [1-255]
BARCODE_WIDTH = b'\x1d\x77\x03' # Barcode Width [2-6] BARCODE_WIDTH = hex2bytes('1d7703') # Barcode Width [2-6]
BARCODE_UPC_A = b'\x1d\x6b\x00' # Barcode type UPC-A BARCODE_UPC_A = hex2bytes('1d6b00') # Barcode type UPC-A
BARCODE_UPC_E = b'\x1d\x6b\x01' # Barcode type UPC-E BARCODE_UPC_E = hex2bytes('1d6b01') # Barcode type UPC-E
BARCODE_EAN13 = b'\x1d\x6b\x02' # Barcode type EAN13 BARCODE_EAN13 = hex2bytes('1d6b02') # Barcode type EAN13
BARCODE_EAN8 = b'\x1d\x6b\x03' # Barcode type EAN8 BARCODE_EAN8 = hex2bytes('1d6b03') # Barcode type EAN8
BARCODE_CODE39 = b'\x1d\x6b\x04' # Barcode type CODE39 BARCODE_CODE39 = hex2bytes('1d6b04') # Barcode type CODE39
BARCODE_ITF = b'\x1d\x6b\x05' # Barcode type ITF BARCODE_ITF = hex2bytes('1d6b05') # Barcode type ITF
BARCODE_NW7 = b'\x1d\x6b\x06' # Barcode type NW7 BARCODE_NW7 = hex2bytes('1d6b06') # Barcode type NW7
# Image format # Image format
S_RASTER_N = b'\x1d\x76\x30\x00' # Set raster image normal size S_RASTER_N = hex2bytes('1d763000') # Set raster image normal size
S_RASTER_2W = b'\x1d\x76\x30\x01' # Set raster image double width S_RASTER_2W = hex2bytes('1d763001') # Set raster image double width
S_RASTER_2H = b'\x1d\x76\x30\x02' # Set raster image double height S_RASTER_2H = hex2bytes('1d763002') # Set raster image double height
S_RASTER_Q = b'\x1d\x76\x30\x03' # Set raster image quadruple S_RASTER_Q = hex2bytes('1d763003') # Set raster image quadruple

11
escpos/escpos.py
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@ -12,10 +12,11 @@ import qrcode
import operator import operator
from PIL import Image from PIL import Image
from constants import * from escpos.utils import *
from exceptions import * from escpos.constants import *
from escpos.exceptions import *
class Escpos: class Escpos(object):
""" ESC/POS Printer object """ """ ESC/POS Printer object """
device = None device = None
@ -40,7 +41,7 @@ class Escpos:
self._raw(S_RASTER_N) self._raw(S_RASTER_N)
buffer = "%02X%02X%02X%02X" % (((size[0]//size[1])//8), 0, size[1], 0) buffer = "%02X%02X%02X%02X" % (((size[0]//size[1])//8), 0, size[1], 0)
self._raw(buffer.decode('hex')) self._raw(hex2bytes(buffer))
buffer = "" buffer = ""
while i < len(line): while i < len(line):
@ -49,7 +50,7 @@ class Escpos:
i += 8 i += 8
cont += 1 cont += 1
if cont % 4 == 0: if cont % 4 == 0:
self._raw(buffer.decode("hex")) self._raw(hex2bytes(buffer))
buffer = "" buffer = ""
cont = 0 cont = 0

18
escpos/printer.py
View File

@ -11,9 +11,9 @@ import usb.util
import serial import serial
import socket import socket
from escpos import * from escpos.escpos import *
from constants import * from escpos.constants import *
from exceptions import * from escpos.exceptions import *
class Usb(Escpos): class Usb(Escpos):
""" Define USB printer """ """ Define USB printer """
@ -44,13 +44,13 @@ class Usb(Escpos):
try: try:
self.device.detach_kernel_driver(0) self.device.detach_kernel_driver(0)
except usb.core.USBError as e: except usb.core.USBError as e:
print "Could not detatch kernel driver: %s" % str(e) print("Could not detatch kernel driver: %s" % str(e))
try: try:
self.device.set_configuration() self.device.set_configuration()
self.device.reset() self.device.reset()
except usb.core.USBError as e: except usb.core.USBError as e:
print "Could not set configuration: %s" % str(e) print("Could not set configuration: %s" % str(e))
def _raw(self, msg): def _raw(self, msg):
@ -88,9 +88,9 @@ class Serial(Escpos):
self.device = serial.Serial(port=self.devfile, baudrate=self.baudrate, bytesize=self.bytesize, parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE, timeout=self.timeout, dsrdtr=True) self.device = serial.Serial(port=self.devfile, baudrate=self.baudrate, bytesize=self.bytesize, parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE, timeout=self.timeout, dsrdtr=True)
if self.device is not None: if self.device is not None:
print "Serial printer enabled" print("Serial printer enabled")
else: else:
print "Unable to open serial printer on: %s" % self.devfile print("Unable to open serial printer on: %s" % self.devfile)
def _raw(self, msg): def _raw(self, msg):
@ -124,7 +124,7 @@ class Network(Escpos):
self.device.connect((self.host, self.port)) self.device.connect((self.host, self.port))
if self.device is None: if self.device is None:
print "Could not open socket for %s" % self.host print("Could not open socket for %s" % self.host)
def _raw(self, msg): def _raw(self, msg):
@ -153,7 +153,7 @@ class File(Escpos):
self.device = open(self.devfile, "wb") self.device = open(self.devfile, "wb")
if self.device is None: if self.device is None:
print "Could not open the specified file %s" % self.devfile print("Could not open the specified file %s" % self.devfile)
def _raw(self, msg): def _raw(self, msg):

9
escpos/utils.py Normal file
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@ -0,0 +1,9 @@
try:
bytes.fromhex
def hex2bytes(hex_string):
return bytes.fromhex(hex_string)
except:
def hex2bytes(hex_string):
return hex_string.decode('hex')

1
setup.py
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@ -1,5 +1,6 @@
#!/usr/bin/python #!/usr/bin/python
from setuptools import setup
from distutils.core import setup from distutils.core import setup
setup( setup(