DeDRM_tools/DeDRM_plugin/flatxml2html.py

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#! /usr/bin/python
# vim:ts=4:sw=4:softtabstop=4:smarttab:expandtab
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# For use with Topaz Scripts Version 2.6
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import sys
import csv
import os
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import math
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import getopt
import functools
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from struct import pack
from struct import unpack
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class DocParser(object):
def __init__(self, flatxml, classlst, fileid, bookDir, gdict, fixedimage):
self.id = os.path.basename(fileid).replace('.dat','')
self.svgcount = 0
self.docList = flatxml.split(b'\n')
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self.docSize = len(self.docList)
self.classList = {}
self.bookDir = bookDir
self.gdict = gdict
tmpList = classlst.split('\n')
for pclass in tmpList:
if pclass != b'':
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# remove the leading period from the css name
cname = pclass[1:]
self.classList[cname] = True
self.fixedimage = fixedimage
self.ocrtext = []
self.link_id = []
self.link_title = []
self.link_page = []
self.link_href = []
self.link_type = []
self.dehyphen_rootid = []
self.paracont_stemid = []
self.parastems_stemid = []
def getGlyph(self, gid):
result = ''
id='id="gl%d"' % gid
return self.gdict.lookup(id)
def glyphs_to_image(self, glyphList):
def extract(path, key):
b = path.find(key) + len(key)
e = path.find(' ',b)
return int(path[b:e])
svgDir = os.path.join(self.bookDir,'svg')
imgDir = os.path.join(self.bookDir,'img')
imgname = self.id + '_%04d.svg' % self.svgcount
imgfile = os.path.join(imgDir,imgname)
# get glyph information
gxList = self.getData(b'info.glyph.x',0,-1)
gyList = self.getData(b'info.glyph.y',0,-1)
gidList = self.getData(b'info.glyph.glyphID',0,-1)
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gids = []
maxws = []
maxhs = []
xs = []
ys = []
gdefs = []
# get path defintions, positions, dimensions for each glyph
# that makes up the image, and find min x and min y to reposition origin
minx = -1
miny = -1
for j in glyphList:
gid = gidList[j]
gids.append(gid)
xs.append(gxList[j])
if minx == -1: minx = gxList[j]
else : minx = min(minx, gxList[j])
ys.append(gyList[j])
if miny == -1: miny = gyList[j]
else : miny = min(miny, gyList[j])
path = self.getGlyph(gid)
gdefs.append(path)
maxws.append(extract(path,'width='))
maxhs.append(extract(path,'height='))
# change the origin to minx, miny and calc max height and width
maxw = maxws[0] + xs[0] - minx
maxh = maxhs[0] + ys[0] - miny
for j in range(0, len(xs)):
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xs[j] = xs[j] - minx
ys[j] = ys[j] - miny
maxw = max( maxw, (maxws[j] + xs[j]) )
maxh = max( maxh, (maxhs[j] + ys[j]) )
# open the image file for output
ifile = open(imgfile,'w')
ifile.write('<?xml version="1.0" standalone="no"?>\n')
ifile.write('<!DOCTYPE svg PUBLIC "-//W3C/DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">\n')
ifile.write('<svg width="%dpx" height="%dpx" viewBox="0 0 %d %d" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1">\n' % (math.floor(maxw/10), math.floor(maxh/10), maxw, maxh))
ifile.write('<defs>\n')
for j in range(0,len(gdefs)):
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ifile.write(gdefs[j])
ifile.write('</defs>\n')
for j in range(0,len(gids)):
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ifile.write('<use xlink:href="#gl%d" x="%d" y="%d" />\n' % (gids[j], xs[j], ys[j]))
ifile.write('</svg>')
ifile.close()
return 0
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# return tag at line pos in document
def lineinDoc(self, pos) :
if (pos >= 0) and (pos < self.docSize) :
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item = self.docList[pos]
if item.find(b'=') >= 0:
(name, argres) = item.split(b'=',1)
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else :
name = item
argres = b''
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return name, argres
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# find tag in doc if within pos to end inclusive
def findinDoc(self, tagpath, pos, end) :
result = None
if end == -1 :
end = self.docSize
else:
end = min(self.docSize, end)
foundat = -1
for j in range(pos, end):
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item = self.docList[j]
if item.find(b'=') >= 0:
(name, argres) = item.split(b'=',1)
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else :
name = item
argres = ''
if (isinstance(tagpath,str)):
tagpath = tagpath.encode('utf-8')
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if name.endswith(tagpath) :
result = argres
foundat = j
break
return foundat, result
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# return list of start positions for the tagpath
def posinDoc(self, tagpath):
startpos = []
pos = 0
res = ""
while res != None :
(foundpos, res) = self.findinDoc(tagpath, pos, -1)
if res != None :
startpos.append(foundpos)
pos = foundpos + 1
return startpos
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# returns a vector of integers for the tagpath
def getData(self, tagpath, pos, end):
argres=[]
(foundat, argt) = self.findinDoc(tagpath, pos, end)
if (argt != None) and (len(argt) > 0) :
argList = argt.split(b'|')
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argres = [ int(strval) for strval in argList]
return argres
# get the class
def getClass(self, pclass):
nclass = pclass
# class names are an issue given topaz may start them with numerals (not allowed),
# use a mix of cases (which cause some browsers problems), and actually
# attach numbers after "_reclustered*" to the end to deal classeses that inherit
# from a base class (but then not actually provide all of these _reclustereed
# classes in the stylesheet!
# so we clean this up by lowercasing, prepend 'cl-', and getting any baseclass
# that exists in the stylesheet first, and then adding this specific class
# after
# also some class names have spaces in them so need to convert to dashes
if nclass != None :
nclass = nclass.replace(b' ',b'-')
classres = b''
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nclass = nclass.lower()
nclass = b'cl-' + nclass
baseclass = b''
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# graphic is the base class for captions
if nclass.find(b'cl-cap-') >=0 :
classres = b'graphic' + b' '
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else :
# strip to find baseclass
p = nclass.find(b'_')
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if p > 0 :
baseclass = nclass[0:p]
if baseclass in self.classList:
classres += baseclass + b' '
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classres += nclass
nclass = classres
return nclass
# develop a sorted description of the starting positions of
# groups and regions on the page, as well as the page type
def PageDescription(self):
def compare(x, y):
(xtype, xval) = x
(ytype, yval) = y
if xval > yval:
return 1
if xval == yval:
return 0
return -1
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result = []
(pos, pagetype) = self.findinDoc(b'page.type',0,-1)
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groupList = self.posinDoc(b'page.group')
groupregionList = self.posinDoc(b'page.group.region')
pageregionList = self.posinDoc(b'page.region')
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# integrate into one list
for j in groupList:
result.append(('grpbeg',j))
for j in groupregionList:
result.append(('gregion',j))
for j in pageregionList:
result.append(('pregion',j))
result.sort(key=functools.cmp_to_key(compare))
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# insert group end and page end indicators
inGroup = False
j = 0
while True:
if j == len(result): break
rtype = result[j][0]
rval = result[j][1]
if not inGroup and (rtype == 'grpbeg') :
inGroup = True
j = j + 1
elif inGroup and (rtype in ('grpbeg', 'pregion')):
result.insert(j,('grpend',rval))
inGroup = False
else:
j = j + 1
if inGroup:
result.append(('grpend',-1))
result.append(('pageend', -1))
return pagetype, result
# build a description of the paragraph
def getParaDescription(self, start, end, regtype):
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result = []
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# paragraph
(pos, pclass) = self.findinDoc(b'paragraph.class',start,end)
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pclass = self.getClass(pclass)
# if paragraph uses extratokens (extra glyphs) then make it fixed
(pos, extraglyphs) = self.findinDoc(b'paragraph.extratokens',start,end)
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# build up a description of the paragraph in result and return it
# first check for the basic - all words paragraph
(pos, sfirst) = self.findinDoc(b'paragraph.firstWord',start,end)
(pos, slast) = self.findinDoc(b'paragraph.lastWord',start,end)
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if (sfirst != None) and (slast != None) :
first = int(sfirst)
last = int(slast)
makeImage = (regtype == b'vertical') or (regtype == b'table')
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makeImage = makeImage or (extraglyphs != None)
if self.fixedimage:
makeImage = makeImage or (regtype == b'fixed')
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if (pclass != None):
makeImage = makeImage or (pclass.find(b'.inverted') >= 0)
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if self.fixedimage :
makeImage = makeImage or (pclass.find(b'cl-f-') >= 0)
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# before creating an image make sure glyph info exists
gidList = self.getData(b'info.glyph.glyphID',0,-1)
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makeImage = makeImage & (len(gidList) > 0)
if not makeImage :
# standard all word paragraph
for wordnum in range(first, last):
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result.append(('ocr', wordnum))
return pclass, result
# convert paragraph to svg image
# translate first and last word into first and last glyphs
# and generate inline image and include it
glyphList = []
firstglyphList = self.getData(b'word.firstGlyph',0,-1)
gidList = self.getData(b'info.glyph.glyphID',0,-1)
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firstGlyph = firstglyphList[first]
if last < len(firstglyphList):
lastGlyph = firstglyphList[last]
else :
lastGlyph = len(gidList)
# handle case of white sapce paragraphs with no actual glyphs in them
# by reverting to text based paragraph
if firstGlyph >= lastGlyph:
# revert to standard text based paragraph
for wordnum in range(first, last):
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result.append(('ocr', wordnum))
return pclass, result
for glyphnum in range(firstGlyph, lastGlyph):
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glyphList.append(glyphnum)
# include any extratokens if they exist
(pos, sfg) = self.findinDoc(b'extratokens.firstGlyph',start,end)
(pos, slg) = self.findinDoc(b'extratokens.lastGlyph',start,end)
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if (sfg != None) and (slg != None):
for glyphnum in range(int(sfg), int(slg)):
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glyphList.append(glyphnum)
num = self.svgcount
self.glyphs_to_image(glyphList)
self.svgcount += 1
result.append(('svg', num))
return pclass, result
# this type of paragraph may be made up of multiple spans, inline
# word monograms (images), and words with semantic meaning,
# plus glyphs used to form starting letter of first word
# need to parse this type line by line
line = start + 1
word_class = ''
# if end is -1 then we must search to end of document
if end == -1 :
end = self.docSize
# seems some xml has last* coming before first* so we have to
# handle any order
sp_first = -1
sp_last = -1
gl_first = -1
gl_last = -1
ws_first = -1
ws_last = -1
word_class = ''
word_semantic_type = ''
while (line < end) :
(name, argres) = self.lineinDoc(line)
if name.endswith(b'span.firstWord') :
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sp_first = int(argres)
elif name.endswith(b'span.lastWord') :
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sp_last = int(argres)
elif name.endswith(b'word.firstGlyph') :
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gl_first = int(argres)
elif name.endswith(b'word.lastGlyph') :
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gl_last = int(argres)
elif name.endswith(b'word_semantic.firstWord'):
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ws_first = int(argres)
elif name.endswith(b'word_semantic.lastWord'):
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ws_last = int(argres)
elif name.endswith(b'word.class'):
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# we only handle spaceafter word class
try:
(cname, space) = argres.split(b'-',1)
if space == b'' : space = b'0'
if (cname == b'spaceafter') and (int(space) > 0) :
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word_class = 'sa'
except:
pass
elif name.endswith(b'word.img.src'):
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result.append(('img' + word_class, int(argres)))
word_class = ''
elif name.endswith(b'region.img.src'):
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result.append(('img' + word_class, int(argres)))
if (sp_first != -1) and (sp_last != -1):
for wordnum in range(sp_first, sp_last):
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result.append(('ocr', wordnum))
sp_first = -1
sp_last = -1
if (gl_first != -1) and (gl_last != -1):
glyphList = []
for glyphnum in range(gl_first, gl_last):
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glyphList.append(glyphnum)
num = self.svgcount
self.glyphs_to_image(glyphList)
self.svgcount += 1
result.append(('svg', num))
gl_first = -1
gl_last = -1
if (ws_first != -1) and (ws_last != -1):
for wordnum in range(ws_first, ws_last):
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result.append(('ocr', wordnum))
ws_first = -1
ws_last = -1
line += 1
return pclass, result
def buildParagraph(self, pclass, pdesc, type, regtype) :
parares = ''
sep =''
classres = ''
if pclass :
classres = ' class="' + pclass.decode('utf-8') + '"'
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br_lb = (regtype == 'fixed') or (regtype == 'chapterheading') or (regtype == 'vertical')
handle_links = len(self.link_id) > 0
if (type == 'full') or (type == 'begin') :
parares += '<p' + classres + '>'
if (type == 'end'):
parares += ' '
lstart = len(parares)
cnt = len(pdesc)
for j in range( 0, cnt) :
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(wtype, num) = pdesc[j]
if wtype == 'ocr' :
try:
word = self.ocrtext[num]
except:
word = ""
sep = ' '
if handle_links:
link = self.link_id[num]
if (link > 0):
linktype = self.link_type[link-1]
title = self.link_title[link-1]
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if isinstance(title, bytes):
title = title.decode('utf-8')
if (title == "") or (parares.rfind(title) < 0):
title=parares[lstart:]
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if linktype == 'external' :
linkhref = self.link_href[link-1]
linkhtml = '<a href="%s">' % linkhref
else :
if len(self.link_page) >= link :
ptarget = self.link_page[link-1] - 1
linkhtml = '<a href="#page%04d">' % ptarget
else :
# just link to the current page
linkhtml = '<a href="#' + self.id + '">'
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linkhtml += title
linkhtml += '</a>'
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pos = parares.rfind(title)
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if pos >= 0:
parares = parares[0:pos] + linkhtml + parares[pos+len(title):]
else :
parares += linkhtml
lstart = len(parares)
if word == b'_link_' : word = b''
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elif (link < 0) :
if word == b'_link_' : word = b''
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if word == b'_lb_':
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if ((num-1) in self.dehyphen_rootid ) or handle_links:
word = b''
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sep = ''
elif br_lb :
word = b'<br />\n'
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sep = ''
else :
word = b'\n'
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sep = ''
if num in self.dehyphen_rootid :
word = word[0:-1]
sep = ''
parares += word.decode('utf-8') + sep
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elif wtype == 'img' :
sep = ''
parares += '<img src="img/img%04d.jpg" alt="" />' % num
parares += sep
elif wtype == 'imgsa' :
sep = ' '
parares += '<img src="img/img%04d.jpg" alt="" />' % num
parares += sep
elif wtype == 'svg' :
sep = ''
parares += '<img src="img/'
parares += self.id
parares += '_%04d.svg" alt="" />' % num
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parares += sep
if len(sep) > 0 : parares = parares[0:-1]
if (type == 'full') or (type == 'end') :
parares += '</p>'
return parares
def buildTOCEntry(self, pdesc) :
parares = ''
sep =''
tocentry = ''
handle_links = len(self.link_id) > 0
lstart = 0
cnt = len(pdesc)
for j in range( 0, cnt) :
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(wtype, num) = pdesc[j]
if wtype == 'ocr' :
word = self.ocrtext[num].decode('utf-8')
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sep = ' '
if handle_links:
link = self.link_id[num]
if (link > 0):
linktype = self.link_type[link-1]
title = self.link_title[link-1]
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title = title.rstrip(b'. ').decode('utf-8')
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alt_title = parares[lstart:]
alt_title = alt_title.strip()
# now strip off the actual printed page number
alt_title = alt_title.rstrip('01234567890ivxldIVXLD-.')
alt_title = alt_title.rstrip('. ')
# skip over any external links - can't have them in a books toc
if linktype == 'external' :
title = ''
alt_title = ''
linkpage = ''
else :
if len(self.link_page) >= link :
ptarget = self.link_page[link-1] - 1
linkpage = '%04d' % ptarget
else :
# just link to the current page
linkpage = self.id[4:]
if len(alt_title) >= len(title):
title = alt_title
if title != '' and linkpage != '':
tocentry += title + '|' + linkpage + '\n'
lstart = len(parares)
if word == '_link_' : word = ''
elif (link < 0) :
if word == '_link_' : word = ''
if word == '_lb_':
word = ''
sep = ''
if num in self.dehyphen_rootid :
word = word[0:-1]
sep = ''
parares += word + sep
else :
continue
return tocentry
# walk the document tree collecting the information needed
# to build an html page using the ocrText
def process(self):
tocinfo = ''
hlst = []
# get the ocr text
(pos, argres) = self.findinDoc(b'info.word.ocrText',0,-1)
if argres : self.ocrtext = argres.split(b'|')
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# get information to dehyphenate the text
self.dehyphen_rootid = self.getData(b'info.dehyphen.rootID',0,-1)
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# determine if first paragraph is continued from previous page
(pos, self.parastems_stemid) = self.findinDoc(b'info.paraStems.stemID',0,-1)
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first_para_continued = (self.parastems_stemid != None)
# determine if last paragraph is continued onto the next page
(pos, self.paracont_stemid) = self.findinDoc(b'info.paraCont.stemID',0,-1)
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last_para_continued = (self.paracont_stemid != None)
# collect link ids
self.link_id = self.getData(b'info.word.link_id',0,-1)
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# collect link destination page numbers
self.link_page = self.getData(b'info.links.page',0,-1)
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# collect link types (container versus external)
(pos, argres) = self.findinDoc(b'info.links.type',0,-1)
if argres : self.link_type = argres.split(b'|')
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# collect link destinations
(pos, argres) = self.findinDoc(b'info.links.href',0,-1)
if argres : self.link_href = argres.split(b'|')
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# collect link titles
(pos, argres) = self.findinDoc(b'info.links.title',0,-1)
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if argres :
self.link_title = argres.split(b'|')
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else:
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self.link_title.append('')
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# get a descriptions of the starting points of the regions
# and groups on the page
(pagetype, pageDesc) = self.PageDescription()
regcnt = len(pageDesc) - 1
anchorSet = False
breakSet = False
inGroup = False
# process each region on the page and convert what you can to html
for j in range(regcnt):
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(etype, start) = pageDesc[j]
(ntype, end) = pageDesc[j+1]
# set anchor for link target on this page
if not anchorSet and not first_para_continued:
hlst.append('<div style="visibility: hidden; height: 0; width: 0;" id="')
hlst.append(self.id + '" title="pagetype_' + pagetype.decode('utf-8') + '"></div>\n')
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anchorSet = True
# handle groups of graphics with text captions
if (etype == b'grpbeg'):
(pos, grptype) = self.findinDoc(b'group.type', start, end)
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if grptype != None:
if grptype == b'graphic':
gcstr = ' class="' + grptype.decode('utf-8') + '"'
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hlst.append('<div' + gcstr + '>')
inGroup = True
elif (etype == b'grpend'):
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if inGroup:
hlst.append('</div>\n')
inGroup = False
else:
(pos, regtype) = self.findinDoc(b'region.type',start,end)
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if regtype == b'graphic' :
(pos, simgsrc) = self.findinDoc(b'img.src',start,end)
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if simgsrc:
if inGroup:
hlst.append('<img src="img/img%04d.jpg" alt="" />' % int(simgsrc))
else:
hlst.append('<div class="graphic"><img src="img/img%04d.jpg" alt="" /></div>' % int(simgsrc))
elif regtype == b'chapterheading' :
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(pclass, pdesc) = self.getParaDescription(start,end, regtype)
if not breakSet:
hlst.append('<div style="page-break-after: always;">&nbsp;</div>\n')
breakSet = True
tag = 'h1'
if pclass and (len(pclass) >= 7):
if pclass[3:7] == b'ch1-' : tag = 'h1'
if pclass[3:7] == b'ch2-' : tag = 'h2'
if pclass[3:7] == b'ch3-' : tag = 'h3'
hlst.append('<' + tag + ' class="' + pclass.decode('utf-8') + '">')
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else:
hlst.append('<' + tag + '>')
hlst.append(self.buildParagraph(pclass, pdesc, 'middle', regtype))
hlst.append('</' + tag + '>')
elif (regtype == b'text') or (regtype == b'fixed') or (regtype == b'insert') or (regtype == b'listitem'):
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ptype = 'full'
# check to see if this is a continution from the previous page
if first_para_continued :
ptype = 'end'
first_para_continued = False
(pclass, pdesc) = self.getParaDescription(start,end, regtype)
if pclass and (len(pclass) >= 6) and (ptype == 'full'):
tag = 'p'
if pclass[3:6] == b'h1-' : tag = 'h4'
if pclass[3:6] == b'h2-' : tag = 'h5'
if pclass[3:6] == b'h3-' : tag = 'h6'
hlst.append('<' + tag + ' class="' + pclass.decode('utf-8') + '">')
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hlst.append(self.buildParagraph(pclass, pdesc, 'middle', regtype))
hlst.append('</' + tag + '>')
else :
hlst.append(self.buildParagraph(pclass, pdesc, ptype, regtype))
elif (regtype == b'tocentry') :
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ptype = 'full'
if first_para_continued :
ptype = 'end'
first_para_continued = False
(pclass, pdesc) = self.getParaDescription(start,end, regtype)
tocinfo += self.buildTOCEntry(pdesc)
hlst.append(self.buildParagraph(pclass, pdesc, ptype, regtype))
elif (regtype == b'vertical') or (regtype == b'table') :
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ptype = 'full'
if inGroup:
ptype = 'middle'
if first_para_continued :
ptype = 'end'
first_para_continued = False
(pclass, pdesc) = self.getParaDescription(start, end, regtype)
hlst.append(self.buildParagraph(pclass, pdesc, ptype, regtype))
elif (regtype == b'synth_fcvr.center'):
(pos, simgsrc) = self.findinDoc(b'img.src',start,end)
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if simgsrc:
hlst.append('<div class="graphic"><img src="img/img%04d.jpg" alt="" /></div>' % int(simgsrc))
else :
print(' Making region type', regtype, end=' ')
(pos, temp) = self.findinDoc(b'paragraph',start,end)
(pos2, temp) = self.findinDoc(b'span',start,end)
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if pos != -1 or pos2 != -1:
print(' a "text" region')
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orig_regtype = regtype
regtype = b'fixed'
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ptype = 'full'
# check to see if this is a continution from the previous page
if first_para_continued :
ptype = 'end'
first_para_continued = False
(pclass, pdesc) = self.getParaDescription(start,end, regtype)
if not pclass:
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if orig_regtype.endswith(b'.right') : pclass = b'cl-right'
elif orig_regtype.endswith(b'.center') : pclass = b'cl-center'
elif orig_regtype.endswith(b'.left') : pclass = b'cl-left'
elif orig_regtype.endswith(b'.justify') : pclass = b'cl-justify'
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if pclass and (ptype == 'full') and (len(pclass) >= 6):
tag = 'p'
if pclass[3:6] == b'h1-' : tag = 'h4'
if pclass[3:6] == b'h2-' : tag = 'h5'
if pclass[3:6] == b'h3-' : tag = 'h6'
hlst.append('<' + tag + ' class="' + pclass.decode('utf-8') + '">')
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hlst.append(self.buildParagraph(pclass, pdesc, 'middle', regtype))
hlst.append('</' + tag + '>')
else :
hlst.append(self.buildParagraph(pclass, pdesc, ptype, regtype))
else :
print(' a "graphic" region')
(pos, simgsrc) = self.findinDoc(b'img.src',start,end)
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if simgsrc:
hlst.append('<div class="graphic"><img src="img/img%04d.jpg" alt="" /></div>' % int(simgsrc))
htmlpage = "".join(hlst)
if last_para_continued :
if htmlpage[-4:] == '</p>':
htmlpage = htmlpage[0:-4]
last_para_continued = False
return htmlpage, tocinfo
def convert2HTML(flatxml, classlst, fileid, bookDir, gdict, fixedimage):
# create a document parser
dp = DocParser(flatxml, classlst, fileid, bookDir, gdict, fixedimage)
htmlpage, tocinfo = dp.process()
return htmlpage, tocinfo