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Set the KF8 thumbnail URI (EXTH 129) in a similar manner as KindleGen 2.5

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This commit is contained in:
NiLuJe 2012-09-14 18:02:50 +02:00
parent 8eb97bbe83
commit 7690d8a97d
1 changed files with 6 additions and 2 deletions
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8
src/calibre/ebooks/mobi/writer8/exth.py
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@ -11,7 +11,7 @@ import re
from struct import pack
from io import BytesIO
from calibre.ebooks.mobi.utils import utf8_text
from calibre.ebooks.mobi.utils import (utf8_text, to_base)
from calibre.utils.localization import lang_as_iso639_1
EXTH_CODES = {
@ -30,6 +30,7 @@ EXTH_CODES = {
'startreading': 116,
'kf8_header_index': 121,
'num_of_resources': 125,
'kf8_thumbnail_uri': 129,
'kf8_unknown_count': 131,
'coveroffset': 201,
'thumboffset': 202,
@ -159,7 +160,10 @@ def build_exth(metadata, prefer_author_sort=False, is_periodical=False,
if thumbnail_offset is not None:
exth.write(pack(b'>III', EXTH_CODES['thumboffset'], 12,
thumbnail_offset))
nrecs += 1
thumbnail_uri_str = bytes('kindle:embed:%s' %(to_base(thumbnail_offset, base=32, min_num_digits=4)))
exth.write(pack(b'>II', EXTH_CODES['kf8_thumbnail_uri'], len(thumbnail_uri_str) + 8))
exth.write(thumbnail_uri_str)
nrecs += 2
if start_offset is not None:
try: