def qrcode(req, width):
import qr
url = req.GET.get('url')
if url is None:
raise Http404
try:
data = url.encode('ascii')
except UnicodeError:
# only supports URLs properly urlencoded
raise Http404
if width == "480":
magnify = 8
else:
magnify = 4
buf = StringIO()
try:
qr.qrcode(data, buf, format=qr.GIF, magnify=magnify)
except ValueError:
# qr module wasn't be compiled with GD library
raise Http404
content = buf.getvalue()
CACHE_TIMEOUT = 86400
res = HttpResponse(content, content_type='image/gif')
res['Content-Length'] = str(len(content))
res['ETag'] = '"%s"' % md5(content).hexdigest()
res['Last-Modified'] = http_date()
res['Expires'] = http_date(time.time() + CACHE_TIMEOUT)
patch_cache_control(res, max_age=CACHE_TIMEOUT)
return res
def qrcode(req, width):
import qr
url = req.GET.get('url')
if url is None:
raise Http404
try:
data = url.encode('ascii')
except UnicodeError:
# only supports URLs properly urlencoded
raise Http404
if width == "480":
magnify = 8
else:
magnify = 4
buf = StringIO()
try:
qr.qrcode(data, buf, format=qr.GIF, magnify=magnify)
except ValueError:
# qr module wasn't be compiled with GD library
raise Http404
content = buf.getvalue()
CACHE_TIMEOUT = 86400
res = HttpResponse(content, content_type='image/gif')
res['Content-Length'] = str(len(content))
res['ETag'] = '"%s"' % md5(content).hexdigest()
res['Last-Modified'] = http_date()
res['Expires'] = http_date(time.time() + CACHE_TIMEOUT)
patch_cache_control(res, max_age=CACHE_TIMEOUT)
return res
def test3(self):
''' This test is to ensure that an alphanumeric message is recognised
'''
msg = 'hi'
self.block = qrcode (msg = msg)
assert (self.block.msgtype == 1)# test 3 fails, alphanumeric message in not recongised
def test2(self):
'''This test is to make sure that a block can regognise what type of data it is handling
'''
msg = 0
self.block = qrcode (msg = msg)
assert (self.block.msgtype == 0)#test 2 fails, numeric message is not recognised
def test1(self):
with open('sizetestData.txt', 'w') as ofile:
msg = ''
self.ver = 0
while self.ver<40:
msg = msg + random.choice(self.letters)
code = qrcode(msg = msg)
if self.ver < code.size:
ofile.write('msg of length {0} generates a version {1} code \n'.format(len(msg),code.size))
self.ver = code.size
def get_qr_layout(txt):
digitqr = qr.qrcode(txt, format=qr.FMT_DIGIT, scale=1, separator=1)
cnt = 0
pc = None
lst = digitqr.split(' ')
lines = []
global LINE_WIDTH
LINE_WIDTH = len(lst)
for row in lst:
line = []
for c in row:
if c != pc:
if pc:
line.append((int(pc), cnt))
cnt = 0
cnt += 1
pc = c
if cnt:
line.append((int(pc), cnt))
lines.append(line)
cnt = 0
return lines
#!/usr/bin/env python
# -*- coding:utf-8 -*-
import qr, cStringIO
from PIL import Image
buf = cStringIO.StringIO()
qr.qrcode('spam, egg', buf, format=qr.BMP, magnify=2)
buf.seek(0)
Image.open(buf).save('spam.png', 'PNG')
#!/usr/bin/env python
# -*- coding:utf-8 -*-
import qr
f = open('spam' + qr.extension(qr.SVG), 'wb')
f.write(qr.qrcode('spam, egg', format=qr.SVG, separator=0))
f.close()
#!/usr/bin/env python
# -*- coding:utf-8 -*-
import qr
qr.qrcode("spam, egg", open("spam" + qr.extension(qr.JSON), "w"), format=qr.JSON, separator=0)
#!/usr/bin/env python
# -*- coding:utf-8 -*-
from __future__ import print_function
import qr
print('Content-Type: ' + qr.mimetype(qr.FMT_ASCII))
print(qr.qrcode('spam, egg', format=qr.FMT_ASCII))
#!/usr/bin/env python
# -*- coding:utf-8 -*-
import qr
f = open('spam.png', 'w')
f.write(qr.qrcode('spam, egg', format = qr.FMT_PNG, magnify = 2))
f.close()
def test1(self):
''' This test checks that a qrcode object can be made
'''
self.block = qrcode( msg = 'hello', quality = 'M')
assert(str(self.block) =='hello') #Test 1 fails - qr object not created, and does not have correct string representation.
def test5(self):
''' simple integrity test for the list of block sizes'''
self.block = qrcode(msg = '0')
numberOfVersions = 40
assert (len(self.block.sizeList)==numberOfVersions)#test5 fails - data items not correct
def test4(self):
'''This test checks that the version number chosen for a very short messgae in 1'''
msg = 123
expver = 1
self.block = qrcode(msg = msg)
assert (self.block.size == expver)#Test 4 fails, short message version not 1
#!/usr/bin/env python
# -*- coding:utf-8 -*-
import qr
print('Content-Type: ' + qr.mimetype(qr.FMT_ASCII))
print(qr.qrcode('spam, egg', format = qr.FMT_ASCII))
#!/usr/bin/env python
# -*- coding:utf-8 -*-
import qr
f = open('spam.png', 'wb')
f.write(qr.qrcode('spam, egg. spam, egg', format = qr.FMT_PNG, scale = 8))
f.close()
#!/usr/bin/env python
# -*- coding:utf-8 -*-
import qr
f = open('spam' + qr.extension(qr.SVG) , 'wb')
f.write(qr.qrcode('spam, egg', format = qr.SVG, separator = 0))
f.close()
#!/usr/bin/env python
# -*- coding:utf-8 -*-
import qr, cStringIO
from PIL import Image
buf = cStringIO.StringIO(qr.qrcode('spam, egg', format=qr.BMP, scale=2))
Image.open(buf).save('spam.gif', 'GIF')
def test2(self):
code = qrcode('1')
assert (code.size ==1)
