-
Notifications
You must be signed in to change notification settings - Fork 3
/
mobiml2xhtml.py
executable file
·523 lines (461 loc) · 19.7 KB
/
mobiml2xhtml.py
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
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
# -*- coding: utf-8 -*-
# vim:ts=4:sw=4:softtabstop=4:smarttab:expandtab
# this program works in concert with the output from KindleUnpack
'''
Convert from Mobi ML to XHTML
'''
from __future__ import unicode_literals, division, absolute_import, print_function
import os
import re
from utilities import file_open
SPECIAL_HANDLING_TAGS = {
'?xml' : ('xmlheader', -1),
'!--' : ('comment', -3),
'!DOCTYPE' : ('doctype', -1),
}
SPECIAL_HANDLING_TYPES = ['xmlheader', 'doctype', 'comment']
SELF_CLOSING_TAGS = ['br' , 'hr', 'input', 'img', 'image', 'meta', 'spacer', 'link', 'frame', 'base', 'col', 'reference']
DOCTYPE_DECL = '<?xml version="1.0"?>\n<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">\n'
XML_NS = 'http://www.w3.org/1999/xhtml'
class MobiMLConverter(object):
PAGE_BREAK_PAT = re.compile(r'(<[/]{0,1}mbp:pagebreak\s*[/]{0,1}>)+', re.IGNORECASE)
IMAGE_ATTRS = ('lowrecindex', 'recindex', 'hirecindex')
def __init__(self, filename, out_enc):
self.base_css_rules = 'blockquote { margin: 0em 0em 0em 1.25em }\n'
self.base_css_rules += 'p { margin: 0em }\n'
self.base_css_rules += '.bold { font-weight: bold }\n'
self.base_css_rules += '.italic { font-style: italic }\n'
self.base_css_rules += '.mbp_pagebreak { page-break-after: always; margin: 0; display: block }\n'
self.tag_css_rules = {}
self.tag_css_rule_cnt = 0
self.path = []
self.filename = filename
if out_enc is not None:
try:
self.wipml = file_open(self.filename, 'r', encoding=out_enc).read()
except UnicodeDecodeError:
out_enc = None
if out_enc is None:
encodings = ['utf-8', 'windows-1252']
for enc in encodings:
try:
self.wipml = file_open(self.filename, 'r', encoding=enc).read()
print('Guessing markup character encoding')
break
except UnicodeDecodeError:
next
if out_enc is None:
raise
self.pos = 0
self.opfname = self.filename.rsplit('.',1)[0] + '.opf'
self.opos = 0
self.meta = ''
self.cssname = os.path.join(os.path.dirname(self.filename),'styles.css')
self.current_font_size = 3
self.font_history = []
def cleanup_html(self):
self.wipml = re.sub(r'<div height="0(pt|px|ex|em|%){0,1}"></div>', '', self.wipml)
self.wipml = self.wipml.replace('\r\n', '\n')
self.wipml = self.wipml.replace('> <', '>\n<')
self.wipml = self.wipml.replace('<mbp: ', '<mbp:')
self.wipml = self.wipml.replace('<br></br>','<br/>')
def replace_page_breaks(self):
self.wipml = self.PAGE_BREAK_PAT.sub(
'<div class="mbp_pagebreak" />',
self.wipml)
# parse leading text of ml and tag
def parseml(self):
p = self.pos
if p >= len(self.wipml):
return None
if self.wipml[p] != '<':
res = self.wipml.find('<',p)
if res == -1 :
res = len(self.wipml)
self.pos = res
return self.wipml[p:res], None
# handle comment as a special case to deal with multi-line comments
if self.wipml[p:p+4] == '<!--':
te = self.wipml.find('-->',p+1)
if te != -1:
te = te+2
else :
te = self.wipml.find('>',p+1)
ntb = self.wipml.find('<',p+1)
if ntb != -1 and ntb < te:
self.pos = ntb
return self.wipml[p:ntb], None
self.pos = te + 1
return None, self.wipml[p:te+1]
# parses string version of tag to identify its name,
# its type 'begin', 'end' or 'single',
# plus build a hashtable of its attributes
# code is written to handle the possiblity of very poor formating
def parsetag(self, s):
p = 1
# get the tag name
tname = None
ttype = None
tattr = {}
while s[p:p+1] == ' ' :
p += 1
if s[p:p+1] == '/':
ttype = 'end'
p += 1
while s[p:p+1] == ' ' :
p += 1
b = p
while s[p:p+1] not in ('>', '/', ' ', '"', "'", "\r", "\n") :
p += 1
tname=s[b:p].lower()
if tname == '!doctype':
tname = '!DOCTYPE'
# special cases
if tname in SPECIAL_HANDLING_TAGS.keys():
ttype, backstep = SPECIAL_HANDLING_TAGS[tname]
tattr['special'] = s[p:backstep]
if ttype is None:
# parse any attributes
while s.find('=',p) != -1 :
while s[p:p+1] == ' ' :
p += 1
b = p
while s[p:p+1] != '=' :
p += 1
aname = s[b:p].lower()
aname = aname.rstrip(' ')
p += 1
while s[p:p+1] == ' ' :
p += 1
if s[p:p+1] in ('"', "'") :
p = p + 1
b = p
while s[p:p+1] not in ('"', "'") :
p += 1
val = s[b:p]
p += 1
else :
b = p
while s[p:p+1] not in ('>', '/', ' ') :
p += 1
val = s[b:p]
tattr[aname] = val
# label beginning and single tags
if ttype is None:
ttype = 'begin'
if s.find(' /',p) >= 0:
ttype = 'single_ext'
elif s.find('/',p) >= 0:
ttype = 'single'
return ttype, tname, tattr
# main routine to convert from mobi markup language to html
def processml(self):
# are these really needed
html_done = False
head_done = False
body_done = False
skip = False
htmlstr = ''
self.replace_page_breaks()
self.cleanup_html()
# now parse the cleaned up ml into standard xhtml
while True:
r = self.parseml()
if not r:
break
text, tag = r
if text:
if not skip:
htmlstr += text
if tag:
ttype, tname, tattr = self.parsetag(tag)
# If we run into a DTD or xml declarations inside the body ... bail.
if tname in SPECIAL_HANDLING_TAGS.keys() and tname != 'comment' and body_done:
htmlstr += '\n</body></html>'
break
# make sure self-closing tags actually self-close
if ttype == 'begin' and tname in SELF_CLOSING_TAGS:
ttype = 'single'
# make sure any end tags of self-closing tags are discarded
if ttype == 'end' and tname in SELF_CLOSING_TAGS:
continue
# remove embedded guide and references from old mobis
if tname in ('guide', 'ncx', 'reference') and ttype in ('begin', 'single', 'single_ext'):
tname = 'removeme:{0}'.format(tname)
tattr = None
if tname in ('guide', 'ncx', 'reference', 'font', 'span') and ttype == 'end':
if self.path[-1] == 'removeme:{0}'.format(tname):
tname = 'removeme:{0}'.format(tname)
tattr = None
# Get rid of font tags that only have a color attribute.
if tname == 'font' and ttype in ('begin', 'single', 'single_ext'):
if 'color' in tattr.keys() and len(tattr.keys()) == 1:
tname = 'removeme:{0}'.format(tname)
tattr = None
# Get rid of empty spans in the markup.
if tname == 'span' and ttype in ('begin', 'single', 'single_ext') and not len(tattr):
tname = 'removeme:{0}'.format(tname)
# need to handle fonts outside of the normal methods
# so fonts tags won't be added to the self.path since we keep track
# of font tags separately with self.font_history
if tname == 'font' and ttype == 'begin':
# check for nested font start tags
if len(self.font_history) > 0 :
# inject a font end tag
taginfo = ('end', 'font', None)
htmlstr += self.processtag(taginfo)
self.font_history.append((ttype, tname, tattr))
# handle the current font start tag
taginfo = (ttype, tname, tattr)
htmlstr += self.processtag(taginfo)
continue
# check for nested font tags and unnest them
if tname == 'font' and ttype == 'end':
self.font_history.pop()
# handle this font end tag
taginfo = ('end', 'font', None)
htmlstr += self.processtag(taginfo)
# check if we were nested
if len(self.font_history) > 0:
# inject a copy of the most recent font start tag from history
taginfo = self.font_history[-1]
htmlstr += self.processtag(taginfo)
continue
# keep track of nesting path
if ttype == 'begin':
self.path.append(tname)
elif ttype == 'end':
if tname != self.path[-1]:
print('improper nesting: ', self.path, tname, ttype)
if tname not in self.path:
# handle case of end tag with no beginning by injecting empty begin tag
taginfo = ('begin', tname, None)
htmlstr += self.processtag(taginfo)
print(" - fixed by injecting empty start tag ", tname)
self.path.append(tname)
elif len(self.path) > 1 and tname == self.path[-2]:
# handle case of dangling missing end
taginfo = ('end', self.path[-1], None)
htmlstr += self.processtag(taginfo)
print(" - fixed by injecting end tag ", self.path[-1])
self.path.pop()
self.path.pop()
if tname == 'removeme:{0}'.format(tname):
if ttype in ('begin', 'single', 'single_ext'):
skip = True
else:
skip = False
else:
taginfo = (ttype, tname, tattr)
htmlstr += self.processtag(taginfo)
# handle potential issue of multiple html, head, and body sections
if tname == 'html' and ttype == 'begin' and not html_done:
htmlstr += '\n'
html_done = True
if tname == 'head' and ttype == 'begin' and not head_done:
htmlstr += '\n'
htmlstr += '<title></title>\n'
# also add in metadata and style link tags
htmlstr += self.meta
htmlstr += '<link href="styles.css" rel="stylesheet" type="text/css" />\n'
head_done = True
if tname == 'body' and ttype == 'begin' and not body_done:
htmlstr += '\n'
body_done = True
# handle issue of possibly missing html, head, and body tags
# I have not seen this but the original did something like this so ...
if not body_done:
htmlstr = '<body>\n' + htmlstr + '</body>\n'
if not head_done:
headstr = '<head>\n'
htmlstr += '<title></title>\n'
headstr += self.meta
headstr += '<link href="styles.css" rel="stylesheet" type="text/css" />\n'
headstr += '</head>\n'
htmlstr = headstr + htmlstr
if not html_done:
htmlstr = '<html>\n' + htmlstr + '</html>\n'
# finally add DOCTYPE info
htmlstr = DOCTYPE_DECL + htmlstr
css = self.base_css_rules
for cls, rule in self.tag_css_rules.items():
css += '.%s { %s }\n' % (cls, rule)
return (htmlstr, css, self.cssname)
def ensure_unit(self, raw, unit='px'):
if re.search(r'\d+$', raw) is not None:
raw += unit
return raw
# flatten possibly modified tag back to string
def taginfo_tostring(self, taginfo):
(ttype, tname, tattr) = taginfo
if ttype is None or tname is None:
return ''
if ttype == 'end':
return '</%s>' % tname
if ttype in SPECIAL_HANDLING_TYPES and tattr is not None and 'special' in tattr.keys():
info = tattr['special']
if ttype == 'comment':
return '<%s %s-->' % tname, info
else:
return '<%s %s>' % tname, info
res = []
res.append('<%s' % tname)
if tattr is not None:
for key in tattr.keys():
res.append(' %s="%s"' % (key, tattr[key]))
if ttype == 'single':
res.append('/>')
elif ttype == 'single_ext':
res.append(' />')
else :
res.append('>')
return "".join(res)
# routines to convert from mobi ml tags atributes to xhtml attributes and styles
def processtag(self, taginfo):
# Converting mobi font sizes to numerics
size_map = {
'xx-small': '1',
'x-small': '2',
'small': '3',
'medium': '4',
'large': '5',
'x-large': '6',
'xx-large': '7',
'normal': '3',
}
size_to_em_map = {
'1': '.65em',
'2': '.75em',
'3': '1em',
'4': '1.125em',
'5': '1.25em',
'6': '1.5em',
'7': '2em',
}
# current tag to work on
(ttype, tname, tattr) = taginfo
if not tattr:
tattr = {}
styles = []
if tname is None or tname.startswith('removeme'):
return ''
if tname == 'html' and not len(tattr):
tattr['xmlns'] = XML_NS
# have not seen an example of this yet so keep it here to be safe
# until this is better understood
if tname in ('country-region', 'place', 'placetype', 'placename',
'state', 'city', 'street', 'address', 'content'):
tname = 'div' if tname == 'content' else 'span'
for key in tattr.keys():
tattr.pop(key)
# handle general case of style, height, width, bgcolor in any tag
if 'style' in tattr.keys():
style = tattr.pop('style').strip()
if style:
styles.append(style)
if 'align' in tattr.keys():
align = tattr.pop('align').strip()
if align:
if tname in ('table', 'td', 'tr'):
pass
else:
styles.append('text-align: %s' % align)
if 'height' in tattr.keys():
height = tattr.pop('height').strip()
if height and '<' not in height and '>' not in height and re.search(r'\d+', height):
if tname in ('table', 'td', 'tr'):
pass
elif tname == 'img':
tattr['height'] = height
else:
styles.append('margin-top: %s' % self.ensure_unit(height))
if 'width' in tattr.keys():
width = tattr.pop('width').strip()
if width and re.search(r'\d+', width):
if tname in ('table', 'td', 'tr'):
pass
elif tname == 'img':
tattr['width'] = width
else:
styles.append('text-indent: %s' % self.ensure_unit(width))
if width.startswith('-'):
styles.append('margin-left: %s' % self.ensure_unit(width[1:]))
if 'bgcolor' in tattr.keys():
# no proprietary html allowed
if tname == 'div':
del tattr['bgcolor']
elif tname == 'font':
# Change font tags to span tags
tname = 'span'
if ttype in ('begin', 'single', 'single_ext'):
# move the face attribute to css font-family
if 'face' in tattr.keys():
face = tattr.pop('face').strip()
styles.append('font-family: "%s"' % face)
# Monitor the constantly changing font sizes, change them to ems and move
# them to css. The following will work for 'flat' font tags, but nested font tags
# will cause things to go wonky. Need to revert to the parent font tag's size
# when a closing tag is encountered.
if 'size' in tattr.keys():
sz = tattr.pop('size').strip().lower()
try:
float(sz)
except ValueError:
if sz.lower() in size_map.keys():
sz = size_map[sz.lower()]
# Garbage collector
else:
sz = '3'
else:
if sz.startswith('-') or sz.startswith('+'):
sz = self.current_font_size + float(sz)
if sz > 7:
sz = 7
elif sz < 1:
sz = 1
sz = str(int(sz))
styles.append('font-size: %s' % size_to_em_map[sz])
self.current_font_size = int(sz)
elif tname == 'img':
for attr in ('width', 'height'):
if attr in tattr:
val = tattr[attr]
if val.lower().endswith('em'):
try:
nval = float(val[:-2])
nval *= 16 * (168.451/72) # Assume this was set using the Kindle profile
tattr[attr] = "%dpx"%int(nval)
except Exception:
del tattr[attr]
elif val.lower().endswith('%'):
del tattr[attr]
# convert the anchor tags
if 'filepos-id' in tattr:
tattr['id'] = tattr.pop('filepos-id')
if 'name' in tattr and tattr['name'] != tattr['id']:
tattr['name'] = tattr['id']
if 'filepos' in tattr:
filepos = tattr.pop('filepos')
try:
tattr['href'] = "#filepos%d" % int(filepos)
except ValueError:
pass
if styles:
ncls = None
rule = '; '.join(styles)
for sel, srule in self.tag_css_rules.items():
if srule == rule:
ncls = sel
break
if ncls is None:
self.tag_css_rule_cnt += 1
ncls = 'rule_%d' % self.tag_css_rule_cnt
self.tag_css_rules[ncls] = rule
cls = tattr.get('class', '')
cls = cls + (' ' if cls else '') + ncls
tattr['class'] = cls
# convert updated tag back to string representation
if len(tattr) == 0:
tattr = None
taginfo = (ttype, tname, tattr)
return self.taginfo_tostring(taginfo)