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Find Mobipocket book titles via fields in MOBI header

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This commit is contained in:
Marshall T. Vandegrift 2009-01-27 19:24:03 -05:00
parent 59947b6a71
commit 0e6a55fb7e
1 changed files with 7 additions and 12 deletions
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15
src/calibre/ebooks/mobi/reader.py
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@ -28,7 +28,7 @@ from calibre import sanitize_file_name
class EXTHHeader(object):
def __init__(self, raw, codec):
def __init__(self, raw, codec, title):
self.doctype = raw[:4]
self.length, self.num_items = struct.unpack('>LL', raw[4:12])
raw = raw[12:]
@ -52,16 +52,8 @@ class EXTHHeader(object):
self.thumbnail_offset, = struct.unpack('>L', content)
#else:
# print 'unknown record', id, repr(content)
title = re.search(r'\0+([^\0]+)\0+', raw[pos:])
if title:
title = title.group(1).decode(codec, 'replace')
if len(title) > 2:
self.mi.title = title
else:
title = re.search(r'\0+([^\0]+)\0+', ''.join(reversed(raw[pos:])))
if title:
self.mi.title = ''.join(reversed(title.group(1).decode(codec, 'replace')))
def process_metadata(self, id, content, codec):
if id == 100:
@ -121,6 +113,9 @@ class BookHeader(object):
if self.compression_type == 'DH':
self.huff_offset, self.huff_number = struct.unpack('>LL', raw[0x70:0x78])
toff, tlen = struct.unpack('>II', raw[0x54:0x5c])
tend = toff + tlen
self.title = raw[toff:tend] if tend < len(raw) else _('Unknown')
langcode = struct.unpack('!L', raw[0x5C:0x60])[0]
langid = langcode & 0xFF
sublangid = (langcode >> 10) & 0xFF
@ -131,7 +126,7 @@ class BookHeader(object):
self.exth_flag, = struct.unpack('>L', raw[0x80:0x84])
self.exth = None
if self.exth_flag & 0x40:
self.exth = EXTHHeader(raw[16+self.length:], self.codec)
self.exth = EXTHHeader(raw[16+self.length:], self.codec, self.title)
self.exth.mi.uid = self.unique_id
self.exth.mi.language = self.language