本文整理汇总了Python中reportlab.lib.utils.getStringIO函数的典型用法代码示例。如果您正苦于以下问题:Python getStringIO函数的具体用法?Python getStringIO怎么用?Python getStringIO使用的例子?那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了getStringIO函数的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: get_templated_HTML
def get_templated_HTML( src_template=DUMB_FMT_HTML, title=None, heading=None, body=None):
from reportlab.lib.utils import getStringIO
p = DocStyle0HTML()
D = p.processfile( getStringIO(body), None )
if title is not None: D['title'] = title
if heading is not None: D['heading'] = '<center><h1>%s</h1></center>' % heading
return get_templated_pagedata( find_template(TEMPLATE_FN), src_template % D)
示例2: PIL_imagedata
def PIL_imagedata(self):
self.source = 'PIL'
zlib = import_zlib()
if not zlib: return
image = self.image
myimage = image.convert('RGB')
imgwidth, imgheight = myimage.size
# this describes what is in the image itself
# *NB* according to the spec you can only use the short form in inline images
#imagedata=['BI /Width %d /Height /BitsPerComponent 8 /ColorSpace /%s /Filter [/Filter [ /ASCII85Decode /FlateDecode] ID]' % (imgwidth, imgheight,'RGB')]
imagedata=['BI /W %d /H %d /BPC 8 /CS /RGB /F [/A85 /Fl] ID' % (imgwidth, imgheight)]
#use a flate filter and Ascii Base 85 to compress
raw = myimage.tostring()
assert(len(raw) == imgwidth * imgheight, "Wrong amount of data for image")
compressed = zlib.compress(raw) #this bit is very fast...
encoded = pdfutils._AsciiBase85Encode(compressed) #...sadly this isn't
#write in blocks of (??) 60 characters per line to a list
outstream = getStringIO(encoded)
dataline = outstream.read(60)
while dataline <> "":
imagedata.append(dataline)
self.binaryData.append(dataline)
dataline = outstream.read(60)
imagedata.append('EI')
return (imagedata, imgwidth, imgheight)
示例3: saveAsHandout
def saveAsHandout(self):
"""Write the PDF document, multiple slides per page."""
styleSheet = getSampleStyleSheet()
h1 = styleSheet["Heading1"]
bt = styleSheet["BodyText"]
if self.sourceFilename:
filename = os.path.splitext(self.sourceFilename)[0] + ".pdf"
outfile = getStringIO()
doc = SimpleDocTemplate(outfile, pagesize=rl_config.defaultPageSize, showBoundary=0)
doc.leftMargin = 1 * cm
doc.rightMargin = 1 * cm
doc.topMargin = 2 * cm
doc.bottomMargin = 2 * cm
multiPageWidth = rl_config.defaultPageSize[0] - doc.leftMargin - doc.rightMargin - 50
story = []
orgFullPageSize = (self.pageWidth, self.pageHeight)
t = makeSlideTable(self.slides, orgFullPageSize, multiPageWidth, self.cols)
story.append(t)
## #ensure outline visible by default
## if self.showOutline:
## doc.canv.showOutline()
doc.build(story)
return self.savetofile(outfile, filename)
示例4: jpg_imagedata
def jpg_imagedata(self):
#directly process JPEG files
#open file, needs some error handling!!
self.source = 'JPEG'
imageFile = open(self.image, 'rb')
info = pdfutils.readJPEGInfo(imageFile)
imgwidth, imgheight = info[0], info[1]
if info[2] == 1:
colorSpace = 'DeviceGray'
elif info[2] == 3:
colorSpace = 'DeviceRGB'
else: #maybe should generate an error, is this right for CMYK?
colorSpace = 'DeviceCMYK'
imageFile.seek(0) #reset file pointer
imagedata = []
#imagedata.append('BI /Width %d /Height /BitsPerComponent 8 /ColorSpace /%s /Filter [/Filter [ /ASCII85Decode /DCTDecode] ID' % (info[0], info[1], colorSpace))
imagedata.append('BI /W %d /H %d /BPC 8 /CS /%s /F [/A85 /DCT] ID' % (imgwidth, imgheight, colorSpace))
#write in blocks of (??) 60 characters per line to a list
compressed = imageFile.read()
encoded = pdfutils._AsciiBase85Encode(compressed)
outstream = getStringIO(encoded)
dataline = outstream.read(60)
while dataline <> "":
imagedata.append(dataline)
self.binaryData.append(dataline)
dataline = outstream.read(60)
imagedata.append('EI')
return (imagedata, imgwidth, imgheight)
示例5: handleError
def handleError(name,fmt):
msg = 'Problem drawing %s fmt=%s file'%(name,fmt)
if shout or verbose>2: print(msg)
errs.append('<br/><h2 style="color:red">%s</h2>' % msg)
buf = getStringIO()
traceback.print_exc(file=buf)
errs.append('<pre>%s</pre>' % escape(buf.getvalue()))
示例6: _AsciiHexEncode
def _AsciiHexEncode(input):
"""Encodes input using ASCII-Hex coding.
This is a verbose encoding used for binary data within
a PDF file. One byte binary becomes two bytes of ASCII.
Helper function used by images."""
output = getStringIO()
for char in input:
output.write('%02x' % ord(char))
output.write('>')
return output.getvalue()
示例7: _svn
def _svn(self,args,fail=1):
''' do a svn command and return the results '''
svn = find_exe('svn')
if type(args) is type([]): args = ' '.join(args)
self.goWorkingDir()
fout=getStringIO()
do_exec(svn + ' ' + args,fout=fout,sys_exit=0,verbose=self.verbose>1,fail=fail)
self.resetDir()
T = fout.getvalue()
T.replace('\r\n','\n')
T.replace('\r','\n')
return '\n'.join([x for x in T.split('\n') if not x or x[0]!='?'])
示例8: saveAsPresentation
def saveAsPresentation(self):
"""Write the PDF document, one slide per page."""
if self.verbose:
print "saving presentation..."
pageSize = (self.pageWidth, self.pageHeight)
if self.sourceFilename:
filename = os.path.splitext(self.sourceFilename)[0] + ".pdf"
if self.outDir:
filename = os.path.join(self.outDir, os.path.basename(filename))
if self.verbose:
print filename
# canv = canvas.Canvas(filename, pagesize = pageSize)
outfile = getStringIO()
if self.notes:
# translate the page from landscape to portrait
pageSize = pageSize[1], pageSize[0]
canv = canvas.Canvas(outfile, pagesize=pageSize)
canv.setPageCompression(self.compression)
canv.setPageDuration(self.pageDuration)
if self.title:
canv.setTitle(self.title)
if self.author:
canv.setAuthor(self.author)
if self.subject:
canv.setSubject(self.subject)
slideNo = 0
for slide in self.slides:
# need diagnostic output if something wrong with XML
slideNo = slideNo + 1
if self.verbose:
print "doing slide %d, id = %s" % (slideNo, slide.id)
if self.notes:
# frame and shift the slide
# canv.scale(0.67, 0.67)
scale_amt = (min(pageSize) / float(max(pageSize))) * 0.95
# canv.translate(self.pageWidth / 6.0, self.pageHeight / 3.0)
# canv.translate(self.pageWidth / 2.0, .025*self.pageHeight)
canv.translate(0.025 * self.pageHeight, (self.pageWidth / 2.0) + 5)
# canv.rotate(90)
canv.scale(scale_amt, scale_amt)
canv.rect(0, 0, self.pageWidth, self.pageHeight)
slide.drawOn(canv)
canv.showPage()
# ensure outline visible by default
if self.showOutline:
canv.showOutline()
canv.save()
return self.savetofile(outfile, filename)
示例9: _AsciiHexDecode
def _AsciiHexDecode(input):
"""Decodes input using ASCII-Hex coding.
Not used except to provide a test of the inverse function."""
#strip out all whitespace
stripped = join(split(input),'')
assert stripped[-1] == '>', 'Invalid terminator for Ascii Hex Stream'
stripped = stripped[:-1] #chop off terminator
assert len(stripped) % 2 == 0, 'Ascii Hex stream has odd number of bytes'
i = 0
output = getStringIO()
while i < len(stripped):
twobytes = stripped[i:i+2]
output.write(chr(eval('0x'+twobytes)))
i = i + 2
return output.getvalue()
示例10: cacheImageFile
def cacheImageFile(filename, returnInMemory=0, IMG=None):
"Processes image as if for encoding, saves to a file with .a85 extension."
from reportlab.lib.utils import PIL_Image, open_for_read
import zlib
cachedname = os.path.splitext(filename)[0] + '.a85'
if filename==cachedname:
if cachedImageExists(filename):
if returnInMemory: return split(open_for_read(cachedname).read(),LINEEND)[:-1]
else:
raise IOError, 'No such cached image %s' % filename
else:
img1 = PIL_Image.open(open_for_read(filename))
img = img1.convert('RGB')
if IMG is not None: IMG.append(img)
imgwidth, imgheight = img.size
code = []
code.append('BI') # begin image
# this describes what is in the image itself
code.append('/W %s /H %s /BPC 8 /CS /RGB /F [/A85 /Fl]' % (imgwidth, imgheight))
code.append('ID')
#use a flate filter and Ascii Base 85
raw = img.tostring()
assert(len(raw) == imgwidth * imgheight, "Wrong amount of data for image")
compressed = zlib.compress(raw) #this bit is very fast...
encoded = _AsciiBase85Encode(compressed) #...sadly this isn't
#write in blocks of 60 characters per line
outstream = getStringIO(encoded)
dataline = outstream.read(60)
while dataline <> "":
code.append(dataline)
dataline = outstream.read(60)
code.append('EI')
if returnInMemory: return code
#save it to a file
f = open(cachedname,'wb')
f.write(join(code, LINEEND)+LINEEND)
f.close()
if rl_config.verbose:
print 'cached image as %s' % cachedname
示例11: makeStream
def makeStream(self):
"Finishes the generation and returns the TTF file as a string"
stm = getStringIO()
write = stm.write
numTables = len(self.tables)
searchRange = 1
entrySelector = 0
while searchRange * 2 <= numTables:
searchRange = searchRange * 2
entrySelector = entrySelector + 1
searchRange = searchRange * 16
rangeShift = numTables * 16 - searchRange
# Header
write(pack(">lHHHH", 0x00010000, numTables, searchRange,
entrySelector, rangeShift))
# Table directory
tables = self.tables.items()
tables.sort() # XXX is this the correct order?
offset = 12 + numTables * 16
for tag, data in tables:
if tag == 'head':
head_start = offset
checksum = calcChecksum(data)
write(tag)
write(pack(">LLL", checksum, offset, len(data)))
paddedLength = (len(data)+3)&~3
offset = offset + paddedLength
# Table data
for tag, data in tables:
data += "\0\0\0"
write(data[:len(data)&~3])
checksum = calcChecksum(stm.getvalue())
checksum = add32(0xB1B0AFBAL, -checksum)
stm.seek(head_start + 8)
write(pack('>L', checksum))
return stm.getvalue()
示例12: encryptPdfInMemory
def encryptPdfInMemory(inputPDF,
userPassword, ownerPassword=None,
canPrint=1, canModify=1, canCopy=1, canAnnotate=1,
strength=40):
"""accepts a PDF file 'as a byte array in memory'; return encrypted one.
This is a high level convenience and does not touch the hard disk in any way.
If you are encrypting the same file over and over again, it's better to use
pageCatcher and cache the results."""
try:
from rlextra.pageCatcher.pageCatcher import storeFormsInMemory, restoreFormsInMemory
except ImportError:
raise ImportError('''reportlab.lib.pdfencrypt.encryptPdfInMemory failed because rlextra cannot be imported.
See http://developer.reportlab.com''')
(bboxInfo, pickledForms) = storeFormsInMemory(inputPDF, all=1, BBoxes=1)
names = bboxInfo.keys()
firstPageSize = bboxInfo['PageForms0'][2:]
#now make a new PDF document
buf = getStringIO()
canv = Canvas(buf, pagesize=firstPageSize)
# set a standard ID while debugging
if CLOBBERID:
canv._doc._ID = "[(xxxxxxxxxxxxxxxx)(xxxxxxxxxxxxxxxx)]"
encryptCanvas(canv,
userPassword, ownerPassword,
canPrint, canModify, canCopy, canAnnotate,
strength=strength)
formNames = restoreFormsInMemory(pickledForms, canv)
for formName in formNames:
#need to extract page size in future
canv.doForm(formName)
canv.showPage()
canv.save()
return buf.getvalue()
示例13: _showWidgetProperties
def _showWidgetProperties(self, widget):
"""Dump all properties of a widget."""
props = widget.getProperties()
keys = list(props.keys())
keys.sort()
lines = []
for key in keys:
value = props[key]
# Method 3
f = getStringIO()
pprint.pprint(value, f)
value = f.getvalue()[:-1]
valueLines = value.split('\n')
for i in range(1, len(valueLines)):
valueLines[i] = ' '*(len(key)+3) + valueLines[i]
value = '\n'.join(valueLines)
lines.append('%s = %s' % (key, value))
text = '\n'.join(lines)
self.outLines.append('<H3>Properties of Example Widget</H3>')
self.outLines.append('<PRE>%s</PRE>' % text)
self.outLines.append('')
示例14: _showWidgetProperties
def _showWidgetProperties(self, widget):
"""Dump all properties of a widget."""
props = widget.getProperties()
keys = props.keys()
keys.sort()
lines = []
for key in keys:
value = props[key]
# Method 3
f = getStringIO()
pprint.pprint(value, f)
value = f.getvalue()[:-1]
valueLines = string.split(value, "\n")
for i in range(1, len(valueLines)):
valueLines[i] = " " * (len(key) + 3) + valueLines[i]
value = string.join(valueLines, "\n")
lines.append("%s = %s" % (key, value))
text = join(lines, "\n")
self.outLines.append("<H3>Properties of Example Widget</H3>")
self.outLines.append("<PRE>%s</PRE>" % text)
self.outLines.append("")
示例15: _AsciiHexEncode
def _AsciiHexEncode(self, input): # also based on piddlePDF
"Helper function used by images"
output = getStringIO()
for char in input:
output.write('%02x' % ord(char))
return output.getvalue()