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MOBI debug: Fix reading of first and last text record numbers from MOBI 6 headers

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This commit is contained in:
Kovid Goyal 2012-05-11 11:17:03 +05:30
parent 75b30cf99a
commit bb4ae8102e
1 changed files with 14 additions and 5 deletions
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19
src/calibre/ebooks/mobi/debug/headers.py
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@ -306,10 +306,15 @@ class MOBIHeader(object): # {{{
self.extra_data_flags = 0
if self.has_extra_data_flags:
self.unknown4 = self.raw[184:192]
self.fdst_idx, self.fdst_count = struct.unpack_from(b'>LL',
self.raw, 192)
if self.fdst_count <= 1:
self.fdst_idx = NULL_INDEX
if self.file_version < 8:
self.first_text_record, self.last_text_record = \
struct.unpack_from(b'>HH', self.raw, 192)
self.fdst_count = struct.unpack_from(b'>L', self.raw, 196)
else:
self.fdst_idx, self.fdst_count = struct.unpack_from(b'>LL',
self.raw, 192)
if self.fdst_count <= 1:
self.fdst_idx = NULL_INDEX
(self.fcis_number, self.fcis_count, self.flis_number,
self.flis_count) = struct.unpack(b'>IIII',
self.raw[200:216])
@ -409,7 +414,11 @@ class MOBIHeader(object): # {{{
a('DRM Flags: %r'%self.drm_flags)
if self.has_extra_data_flags:
a('Unknown4: %r'%self.unknown4)
r('FDST Index', 'fdst_idx')
if hasattr(self, 'first_text_record'):
a('First text record: %d'%self.first_text_record)
a('Last text record: %d'%self.last_text_record)
else:
r('FDST Index', 'fdst_idx')
a('FDST Count: %d'% self.fdst_count)
r('FCIS number', 'fcis_number')
a('FCIS count: %d'% self.fcis_count)