/usr/lib/python2.7/dist-packages/qrtools.py is in python-qrtools 1.4~bzr16-1ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 | #!/usr/bin/env python
# Authors:
# David Green <david4dev@gmail.com>
# Ramiro Algozino <algozino@gmail.com>
#
# qrtools.py: Library for encoding/decoding QR Codes (2D barcodes).
# Copyright (C) 2011 David Green <david4dev@gmail.com>
#
# `qrtools.py` is free software: you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option) any
# later version.
#
# `qrtools.py` is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along
# with `qrtools.py`. If not, see <http://www.gnu.org/licenses/>.
import subprocess
import os
import time
import shutil
import hashlib
import zbar
import re
from codecs import BOM_UTF8
try:
from PIL import Image
except ImportError:
import Image
class QR(object):
def encode_url(data):
data_lower = data.lower()
if data_lower.startswith(u"http://"):
return ('http://' + re.compile(
r'^http://', re.IGNORECASE
).sub('', data))
elif data_lower.startswith(u"https://"):
return ('https://' + re.compile(
r'^https://', re.IGNORECASE
).sub('', data))
#use these for custom data formats eg. url, phone number, VCARD
#data should be an unicode object or a list of unicode objects
data_encode = {
'text' : lambda data: data,
'url' : encode_url,
'email' :lambda data: 'mailto:' + re.compile(
r'^mailto:', re.IGNORECASE
).sub('', data),
'emailmessage' : lambda data : 'MATMSG:TO:' + data[0] + ';SUB:' + data[1] + ';BODY:' + data[2] + ';;',
'telephone' : lambda data: 'tel:' + re.compile(
r'^tel:', re.IGNORECASE
).sub('', data),
'sms' : lambda data : 'SMSTO:' + data[0] + ':' + data[1],
'mms' : lambda data : 'MMSTO:' + data[0] + ':' + data[1],
'geo' : lambda data : 'geo:' + data[0] + ',' + data[1],
'bookmark': lambda data : "MEBKM:TITLE:" + data[0] + ";URL:" + data[1] + ";;",
# phonebook or meCard should be a list of tuples like this:
# [('N','Name'),('TEL', '231698890'), ...]
'phonebook': lambda data: "MECARD:" + ";".join([":".join(i) for i in data]) + ";",
'wifi': lambda data: "WIFI:S:" + data[0] + ";T:" + data[1] + ";P:" + data[2] +";;",
}
data_decode = {
'text': lambda data: data,
'url': lambda data: data,
'email': lambda data: data.replace(u"mailto:",u"").replace(u"MAILTO:",u""),
'emailmessage': lambda data: re.findall(u"MATMSG:TO:(.*);SUB:(.*);BODY:(.*);;", data, re.IGNORECASE)[0],
'telephone': lambda data: data.replace(u"tel:",u"").replace(u"TEL:",u""),
'sms': lambda data: re.findall(u"SMSTO:(.*):(.*)", data, re.IGNORECASE)[0],
'mms': lambda data: re.findall(u"MMSTO:(.*):(.*)", data, re.IGNORECASE)[0],
'geo': lambda data: re.findall(u"GEO:(.*),(.*)", data, re.IGNORECASE)[0],
'bookmark': lambda data: re.findall(u"MEBKM:TITLE:(.*);URL:(.*);;", data, re.IGNORECASE)[0],
'phonebook': lambda data: dict(re.findall("(.*?):(.*?);", data.replace("MECARD:",""), re.IGNORECASE)),
'wifi' : lambda data: re.findall(u"WIFI:S:(.*);T:(.*);P:(.*);;", data, re.IGNORECASE)[0],
}
def data_recognise(self, data = None):
"""Returns an unicode string indicating the data type of the data paramater"""
data = data or self.data
data_lower = data.lower()
if data_lower.startswith(u"http://") or data_lower.startswith(u"https://"): return u'url'
elif data_lower.startswith(u"mailto:"): return u'email'
elif data_lower.startswith(u"matmsg:to:"): return u'emailmessage'
elif data_lower.startswith(u"tel:"): return u'telephone'
elif data_lower.startswith(u"smsto:"): return u'sms'
elif data_lower.startswith(u"mmsto:"): return u'mms'
elif data_lower.startswith(u"geo:"): return u'geo'
elif data_lower.startswith(u"mebkm:title:"): return u'bookmark'
elif data_lower.startswith(u"mecard:"): return u'phonebook'
elif data_lower.startswith(u"wifi:"): return u'wifi'
else: return u'text'
def __init__(
self, data=u'NULL', pixel_size=3, level='L', margin_size=4,
data_type=u'text', filename=None
):
self.pixel_size = pixel_size
self.level = level
self.margin_size = margin_size
self.data_type = data_type
#you should pass data as a unicode object or a list/tuple of unicode objects.
self.data = data
#get a temp directory
self.directory = os.path.join('/tmp', 'qr-%f' % time.time())
self.filename = filename
os.makedirs(self.directory)
def data_to_string(self):
"""Returns a UTF8 string with the QR Code's data"""
# FIX-ME: if we don't add the BOM_UTF8 char, QtQR doesn't decode
# correctly; but if we add it, mobile apps don't.-
# /Apparently/ Confirmed that is a zbar bug.
# See: https://bugs.launchpad.net/qr-tools/+bug/796387
if self.data_type == 'text':
return BOM_UTF8 + self.__class__.data_encode[self.data_type](self.data).encode('utf-8')
else:
return self.__class__.data_encode[self.data_type](self.data).encode('utf-8')
def get_tmp_file(self):
return os.path.join(
self.directory,
#filename is hash of data
hashlib.sha256(self.data_to_string()).hexdigest() + '.png'
)
def encode(self, filename=None):
self.filename = filename or self.get_tmp_file()
if not self.filename.endswith('.png'):
self.filename += '.png'
return subprocess.Popen([
'qrencode',
'-o', self.filename,
'-s', unicode(self.pixel_size),
'-m', unicode(self.margin_size),
'-l', self.level,
self.data_to_string()
]).wait()
def decode(self, filename=None):
self.filename = filename or self.filename
if self.filename:
scanner = zbar.ImageScanner()
# configure the reader
scanner.parse_config('enable')
# obtain image data
pil = Image.open(self.filename).convert('L')
width, height = pil.size
raw = pil.tostring()
# wrap image data
image = zbar.Image(width, height, 'Y800', raw)
# scan the image for barcodes
result = scanner.scan(image)
# extract results
if result == 0:
return False
else:
for symbol in image:
pass
# clean up
del(image)
#Assuming data is encoded in utf8
self.data = symbol.data.decode(u'utf-8')
self.data_type = self.data_recognise()
return True
else:
return False
def decode_webcam(self, callback=lambda s:None, device='/dev/video0'):
# create a Processor
proc = zbar.Processor()
# configure the Processor
proc.parse_config('enable')
# initialize the Processor
proc.init(device)
# setup a callback
def my_handler(proc, image, closure):
# extract results
for symbol in image:
if not symbol.count:
self.data = symbol.data
self.data_type = self.data_recognise()
callback(symbol.data)
proc.set_data_handler(my_handler)
# enable the preview window
proc.visible = True
# initiate scanning
proc.active = True
try:
proc.user_wait()
except zbar.WindowClosed:
pass
def destroy(self):
shutil.rmtree(self.directory)
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