114 lines
3.8 KiB
Python
114 lines
3.8 KiB
Python
# cybertools.docgen.mht
|
|
|
|
"""
|
|
Working with MHT Files.
|
|
"""
|
|
|
|
import base64
|
|
from io import BytesIO, StringIO
|
|
import email
|
|
from PIL import Image
|
|
import mimetypes
|
|
import os
|
|
|
|
from bs4 import BeautifulSoup, Tag
|
|
|
|
|
|
class MHTFile(object):
|
|
|
|
#encoding = 'UTF-8'
|
|
#encoding = 'ISO8859-15'
|
|
encoding = 'Windows-1252'
|
|
bodyMarker = 'lxdoc_body'
|
|
foldernameSuffix = 'Dateien'
|
|
indexes = dict(body=1, filelist=-2)
|
|
|
|
path = documentName = None
|
|
|
|
imageTemplate = ('\n'
|
|
'Content-Location: %(path)s/%(docname)s-%(suffix)s/%(imgname)s\n'
|
|
'Content-Transfer-Encoding: base64\n'
|
|
'Content-Type: %(ctype)s\n\n%(imgdata)s\n\n')
|
|
|
|
filelistItemTemplate = ' <o:File HRef=3D"%s"/>\n'
|
|
filelistPattern =' <o:File HRef=3D"filelist.xml"/>'
|
|
|
|
def __init__(self, data, body):
|
|
self.data = data
|
|
self.msg = email.message_from_string(data)
|
|
self.boundary = '--' + self.msg.get_boundary()
|
|
self.parts = data.split(self.boundary)
|
|
self.body = body
|
|
self.htmlDoc = HTMLDoc(body)
|
|
self.lastImageNum = 0
|
|
self.imageMappings = {}
|
|
for idx, part in enumerate(self.msg.walk()):
|
|
docPath = part['Content-Location']
|
|
contentType = part.get_content_type()
|
|
if idx == self.indexes['body']:
|
|
self.path, docname = os.path.split(docPath)
|
|
self.documentName, ext = os.path.splitext(docname)
|
|
if contentType.startswith('image/'):
|
|
self.lastImageNum += 1
|
|
#print '###', self.path, self.documentName, self.lastImageNum
|
|
|
|
def getImageRefs(self):
|
|
return self.htmlDoc.getImageRefs()
|
|
|
|
def addImage(self, imageData, path):
|
|
image = Image.open(BytesIO(imageData))
|
|
width, height = image.size
|
|
contentType, enc = mimetypes.guess_type(path)
|
|
bp, ext = os.path.splitext(path)
|
|
self.lastImageNum += 1
|
|
name = 'image%03i%s' % (self.lastImageNum, ext)
|
|
self.imageMappings[path] = (name, width, height)
|
|
flpos = self.indexes['filelist']
|
|
vars = dict(path=self.path, docname=self.documentName,
|
|
suffix=self.foldernameSuffix,
|
|
imgname=name, ctype=contentType,
|
|
imgdata=base64.b64encode(imageData))
|
|
content = self. imageTemplate % vars
|
|
self.parts.insert(flpos, str(content))
|
|
filelistRep = (self.filelistItemTemplate % name) + self.filelistPattern
|
|
filelist = self.parts[flpos]
|
|
self.parts[flpos] = str(filelist.replace(self.filelistPattern, filelistRep))
|
|
|
|
|
|
def insertBody(self):
|
|
path = '-'.join((self.documentName, self.foldernameSuffix))
|
|
self.htmlDoc.updateImageRefs(self.imageMappings, path)
|
|
content = self.htmlDoc.doc.renderContents(self.encoding).decode(self.encoding)
|
|
bodyIndex = self.indexes['body']
|
|
baseDocument = self.parts[bodyIndex]
|
|
self.parts[bodyIndex] = baseDocument.replace(self.bodyMarker,
|
|
self.quopri(content))
|
|
|
|
def asString(self):
|
|
return self.boundary.join(self.parts)
|
|
|
|
def quopri(self, s):
|
|
return s.replace('="', '=3D"')
|
|
|
|
|
|
class HTMLDoc(object):
|
|
|
|
def __init__(self, data):
|
|
self.data = data
|
|
self.doc = BeautifulSoup(data, features='lxml')
|
|
|
|
def getImageRefs(self):
|
|
return [img['src'] for img in self.doc('img')]
|
|
|
|
def updateImageRefs(self, mappings, path=''):
|
|
for img in self.doc('img'):
|
|
name, width, height = mappings[img['src']]
|
|
imgdata = Tag(self.doc, name='v:imagedata')
|
|
imgdata['src'] = '/'.join((path, name))
|
|
#imgdata.isSelfClosing = True
|
|
img.append(imgdata)
|
|
del img['src']
|
|
img['style'] = 'width:%spt;height:%spt' % (width, height)
|
|
#img.isSelfClosing = False
|
|
img.name='v:shape'
|
|
|