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MOBI debug: Fix handling of multiple CNCX records

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This commit is contained in:
Kovid Goyal 2011-07-22 18:27:09 -06:00
parent 542bb7b81b
commit eab57e4f82
1 changed files with 9 additions and 6 deletions
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15
src/calibre/ebooks/mobi/debug.py
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@ -214,10 +214,11 @@ class MOBIHeader(object): # {{{
self.number_of_text_records, self.text_record_size = \
struct.unpack(b'>HH', self.raw[8:12])
self.encryption_type_raw, = struct.unpack(b'>H', self.raw[12:14])
self.encryption_type = {0: 'No encryption',
self.encryption_type = {
0: 'No encryption',
1: 'Old mobipocket encryption',
2:'Mobipocket encryption'}.get(self.encryption_type_raw,
repr(self.encryption_type_raw))
2: 'Mobipocket encryption'
}.get(self.encryption_type_raw, repr(self.encryption_type_raw))
self.unknown = self.raw[14:16]
self.identifier = self.raw[16:20]
@ -768,15 +769,17 @@ class CNCX(object) : # {{{
def __init__(self, records, codec):
self.records = OrderedDict()
pos = 0
record_offset = 0
for record in records:
raw = record.raw
pos = 0
while pos < len(raw):
length, consumed = decint(raw[pos:])
if length > 0:
self.records[pos] = raw[pos+consumed:pos+consumed+length].decode(
codec)
self.records[pos+record_offset] = raw[
pos+consumed:pos+consumed+length].decode(codec)
pos += consumed+length
record_offset += 0x10000
def __getitem__(self, offset):
return self.records.get(offset)