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Kindle driver: When uploading MOBI files to the device, upload page information as well (used by the Kindle 3.1 firmware)

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Kovid Goyal 2011-02-10 09:27:27 -07:00
commit ece6bd536b
4 changed files with 475 additions and 310 deletions
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69
format_docs/pdb/apnx.txt Normal file
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APNX
----
apnx files are used by the Amazon Kindle (firmware revision 3.1+) to
map pages from a print book to the Kindle version. Integers within
the file are big-endian.
Layout
------
bytes content comments
4 00010001 Format identifier. Value of 65537 little-endian.
4 start of next The offset after ending location of the first header.
Starts a new sequence of header info
4 length Length of first header
N first header String containing content header
Starts next sequence
2 unknown Always 1
2 length Length of second header
2 page count Total number of bytes after second header that
represent pages. This total includes bytes that
are ignored by the pageMap.
2 unknown Always 32
N second header String containing the page mapping header
4*N padding The first number given in the page mapping header indicates the number of 0 bytes.
4*N page list
Content Header
--------------
The content header is a string enclosed in {} containing key, value pairs.
content comments
contentGuid Guid.
asin Amazon identifier for the Kindle version of the book.
cdeType MOBI cdeType. Should always be EBOK for ebooks.
fileRevisionId Revision of this file.
Example:
{"contentGuid":"d8c14b0","asin":"B000JML5VM","cdeType":"EBOK","fileRevisionId":"1296874359405"}
Page Mapping Header
-------------------
The page mapping header is a string enclosed in {} containing key, value pairs.
content comments
asin The ISBN 10 for the paper book the pages correspond to
pageMap Three value tuple. Looks like: "(N,N,N)"
1) Number of bytes after header that starts the page numbering sequence
2) unknown
3) unknown
Example:
{"asin":"1906694184","pageMap":"(4,a,1)"}
Page List
---------
The page list is a sequence of offsets in the uncompressed HTML. Each
value is the beginning of a new page. Each entry is a 4 byte big endian
int. The list is ordered lowest to highest.

68
src/calibre/devices/kindle/apnx.py Normal file
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# -*- coding: utf-8 -*-
__license__ = 'GPL v3'
__copyright__ = '2011, John Schember <john at nachtimwald.com>'
__docformat__ = 'restructuredtext en'
'''
Generates and writes an APNX page mapping file.
'''
import struct
import uuid
from calibre.ebooks.pdb.header import PdbHeaderReader
class APNXBuilder(object):
'''
Currently uses the Adobe 1024 byte count equal one page formula.
'''
def write_apnx(self, mobi_file_path, apnx_path):
with open(mobi_file_path, 'rb') as mf:
phead = PdbHeaderReader(mf)
r0 = phead.section_data(0)
text_length = struct.unpack('>I', r0[4:8])[0]
pages = self.get_pages(text_length)
apnx = self.generate_apnx(pages)
with open(apnx_path, 'wb') as apnxf:
apnxf.write(apnx)
def generate_apnx(self, pages):
apnx = ''
content_vals = {
'guid': str(uuid.uuid4()).replace('-', '')[:8],
'isbn': '',
}
content_header = '{"contentGuid":"%(guid)s","asin":"%(isbn)s","cdeType":"EBOK","fileRevisionId":"1"}' % content_vals
page_header = '{"asin":"%(isbn)s","pageMap":"(1,a,1)"}' % content_vals
apnx += struct.pack('>I', 65537)
apnx += struct.pack('>I', 12 + len(content_header))
apnx += struct.pack('>I', len(content_header))
apnx += content_header
apnx += struct.pack('>H', 1)
apnx += struct.pack('>H', len(page_header))
apnx += struct.pack('>H', len(pages))
apnx += struct.pack('>H', 32)
apnx += page_header
# write page values to apnx
for page in pages:
apnx += struct.pack('>L', page)
return apnx
def get_pages(self, text_length):
pages = []
count = 0
while count < text_length:
pages.append(count)
count += 1024
return pages

315
src/calibre/devices/kindle/bookmark.py Normal file
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# -*- coding: utf-8 -*-
__license__ = 'GPL v3'
__docformat__ = 'restructuredtext en'
import os
from cStringIO import StringIO
from struct import unpack
class Bookmark(): # {{{
'''
A simple class fetching bookmark data
Kindle-specific
'''
def __init__(self, path, id, book_format, bookmark_extension):
self.book_format = book_format
self.bookmark_extension = bookmark_extension
self.book_length = 0
self.id = id
self.last_read = 0
self.last_read_location = 0
self.path = path
self.timestamp = 0
self.user_notes = None
self.get_bookmark_data()
self.get_book_length()
try:
self.percent_read = min(float(100*self.last_read / self.book_length),100)
except:
self.percent_read = 0
def record(self, n):
from calibre.ebooks.metadata.mobi import StreamSlicer
if n >= self.nrecs:
raise ValueError('non-existent record %r' % n)
offoff = 78 + (8 * n)
start, = unpack('>I', self.data[offoff + 0:offoff + 4])
stop = None
if n < (self.nrecs - 1):
stop, = unpack('>I', self.data[offoff + 8:offoff + 12])
return StreamSlicer(self.stream, start, stop)
def get_bookmark_data(self):
''' Return the timestamp and last_read_location '''
from calibre.ebooks.metadata.mobi import StreamSlicer
user_notes = {}
if self.bookmark_extension == 'mbp':
MAGIC_MOBI_CONSTANT = 150
with open(self.path,'rb') as f:
stream = StringIO(f.read())
data = StreamSlicer(stream)
self.timestamp, = unpack('>I', data[0x24:0x28])
bpar_offset, = unpack('>I', data[0x4e:0x52])
lrlo = bpar_offset + 0x0c
self.last_read = int(unpack('>I', data[lrlo:lrlo+4])[0])
self.last_read_location = self.last_read/MAGIC_MOBI_CONSTANT + 1
entries, = unpack('>I', data[0x4a:0x4e])
# Store the annotations/locations
bpl = bpar_offset + 4
bpar_len, = unpack('>I', data[bpl:bpl+4])
bpar_len += 8
#print "bpar_len: 0x%x" % bpar_len
eo = bpar_offset + bpar_len
# Walk bookmark entries
#print " --- %s --- " % self.path
current_entry = 1
sig = data[eo:eo+4]
previous_block = None
while sig == 'DATA':
text = None
entry_type = None
rec_len, = unpack('>I', data[eo+4:eo+8])
if rec_len == 0:
current_block = "empty_data"
elif data[eo+8:eo+12] == "EBAR":
current_block = "data_header"
#entry_type = "data_header"
location, = unpack('>I', data[eo+0x34:eo+0x38])
#print "data_header location: %d" % location
else:
current_block = "text_block"
if previous_block == 'empty_data':
entry_type = 'Note'
elif previous_block == 'data_header':
entry_type = 'Highlight'
text = data[eo+8:eo+8+rec_len].decode('utf-16-be')
if entry_type:
displayed_location = location/MAGIC_MOBI_CONSTANT + 1
user_notes[location] = dict(id=self.id,
displayed_location=displayed_location,
type=entry_type,
text=text)
eo += rec_len + 8
current_entry += 1
previous_block = current_block
sig = data[eo:eo+4]
while sig == 'BKMK':
# Fix start location for Highlights using BKMK data
end_loc, = unpack('>I', data[eo+0x10:eo+0x14])
if end_loc in user_notes and \
(user_notes[end_loc]['type'] == 'Highlight' or \
user_notes[end_loc]['type'] == 'Note'):
# Switch location to start (0x08:0x0c)
start, = unpack('>I', data[eo+8:eo+12])
user_notes[start] = user_notes[end_loc]
'''
print " %s: swapping 0x%x (%d) to 0x%x (%d)" % (user_notes[end_loc]['type'],
end_loc,
end_loc/MAGIC_MOBI_CONSTANT + 1,
start,
start//MAGIC_MOBI_CONSTANT + 1)
'''
user_notes[start]['displayed_location'] = start/MAGIC_MOBI_CONSTANT + 1
user_notes.pop(end_loc)
else:
# If a bookmark coincides with a user annotation, the locs could
# be the same - cheat by nudging -1
# Skip bookmark for last_read_location
if end_loc != self.last_read:
# print " adding Bookmark at 0x%x (%d)" % (end_loc, end_loc/MAGIC_MOBI_CONSTANT + 1)
displayed_location = end_loc/MAGIC_MOBI_CONSTANT + 1
user_notes[end_loc - 1] = dict(id=self.id,
displayed_location=displayed_location,
type='Bookmark',
text=None)
rec_len, = unpack('>I', data[eo+4:eo+8])
eo += rec_len + 8
sig = data[eo:eo+4]
elif self.bookmark_extension == 'tan':
from calibre.ebooks.metadata.topaz import get_metadata as get_topaz_metadata
def get_topaz_highlight(displayed_location):
# Parse My Clippings.txt for a matching highlight
# Search looks for book title match, highlight match, and location match
# Author is not matched
# This will find the first instance of a clipping only
book_fs = self.path.replace('.%s' % self.bookmark_extension,'.%s' % self.book_format)
with open(book_fs,'rb') as f2:
stream = StringIO(f2.read())
mi = get_topaz_metadata(stream)
my_clippings = self.path
split = my_clippings.find('documents') + len('documents/')
my_clippings = my_clippings[:split] + "My Clippings.txt"
try:
with open(my_clippings, 'r') as f2:
marker_found = 0
text = ''
search_str1 = '%s' % (mi.title)
search_str2 = '- Highlight Loc. %d' % (displayed_location)
for line in f2:
if marker_found == 0:
if line.startswith(search_str1):
marker_found = 1
elif marker_found == 1:
if line.startswith(search_str2):
marker_found = 2
elif marker_found == 2:
if line.startswith('=========='):
break
text += line.strip()
else:
raise Exception('error')
except:
text = '(Unable to extract highlight text from My Clippings.txt)'
return text
MAGIC_TOPAZ_CONSTANT = 33.33
self.timestamp = os.path.getmtime(self.path)
with open(self.path,'rb') as f:
stream = StringIO(f.read())
data = StreamSlicer(stream)
self.last_read = int(unpack('>I', data[5:9])[0])
self.last_read_location = self.last_read/MAGIC_TOPAZ_CONSTANT + 1
entries, = unpack('>I', data[9:13])
current_entry = 0
e_base = 0x0d
while current_entry < entries:
location, = unpack('>I', data[e_base+2:e_base+6])
text = None
text_len, = unpack('>I', data[e_base+0xA:e_base+0xE])
e_type, = unpack('>B', data[e_base+1])
if e_type == 0:
e_type = 'Bookmark'
elif e_type == 1:
e_type = 'Highlight'
text = get_topaz_highlight(location/MAGIC_TOPAZ_CONSTANT + 1)
elif e_type == 2:
e_type = 'Note'
text = data[e_base+0x10:e_base+0x10+text_len]
else:
e_type = 'Unknown annotation type'
displayed_location = location/MAGIC_TOPAZ_CONSTANT + 1
user_notes[location] = dict(id=self.id,
displayed_location=displayed_location,
type=e_type,
text=text)
if text_len == 0xFFFFFFFF:
e_base = e_base + 14
else:
e_base = e_base + 14 + 2 + text_len
current_entry += 1
for location in user_notes:
if location == self.last_read:
user_notes.pop(location)
break
elif self.bookmark_extension == 'pdr':
self.timestamp = os.path.getmtime(self.path)
with open(self.path,'rb') as f:
stream = StringIO(f.read())
data = StreamSlicer(stream)
self.last_read = int(unpack('>I', data[5:9])[0])
entries, = unpack('>I', data[9:13])
current_entry = 0
e_base = 0x0d
self.pdf_page_offset = 0
while current_entry < entries:
'''
location, = unpack('>I', data[e_base+2:e_base+6])
text = None
text_len, = unpack('>I', data[e_base+0xA:e_base+0xE])
e_type, = unpack('>B', data[e_base+1])
if e_type == 0:
e_type = 'Bookmark'
elif e_type == 1:
e_type = 'Highlight'
text = get_topaz_highlight(location/MAGIC_TOPAZ_CONSTANT + 1)
elif e_type == 2:
e_type = 'Note'
text = data[e_base+0x10:e_base+0x10+text_len]
else:
e_type = 'Unknown annotation type'
if self.book_format in ['tpz','azw1']:
displayed_location = location/MAGIC_TOPAZ_CONSTANT + 1
elif self.book_format == 'pdf':
# *** This needs implementation
displayed_location = location
user_notes[location] = dict(id=self.id,
displayed_location=displayed_location,
type=e_type,
text=text)
if text_len == 0xFFFFFFFF:
e_base = e_base + 14
else:
e_base = e_base + 14 + 2 + text_len
current_entry += 1
'''
# Use label as page number
pdf_location, = unpack('>I', data[e_base+1:e_base+5])
label_len, = unpack('>H', data[e_base+5:e_base+7])
location = int(data[e_base+7:e_base+7+label_len])
displayed_location = location
e_type = 'Bookmark'
text = None
user_notes[location] = dict(id=self.id,
displayed_location=displayed_location,
type=e_type,
text=text)
self.pdf_page_offset = pdf_location - location
e_base += (7 + label_len)
current_entry += 1
self.last_read_location = self.last_read - self.pdf_page_offset
else:
print "unsupported bookmark_extension: %s" % self.bookmark_extension
self.user_notes = user_notes
def get_book_length(self):
from calibre.ebooks.metadata.mobi import StreamSlicer
book_fs = self.path.replace('.%s' % self.bookmark_extension,'.%s' % self.book_format)
self.book_length = 0
if self.bookmark_extension == 'mbp':
# Read the book len from the header
try:
with open(book_fs,'rb') as f:
self.stream = StringIO(f.read())
self.data = StreamSlicer(self.stream)
self.nrecs, = unpack('>H', self.data[76:78])
record0 = self.record(0)
self.book_length = int(unpack('>I', record0[0x04:0x08])[0])
except:
pass
elif self.bookmark_extension == 'tan':
# Read bookLength from metadata
from calibre.ebooks.metadata.topaz import MetadataUpdater
try:
with open(book_fs,'rb') as f:
mu = MetadataUpdater(f)
self.book_length = mu.book_length
except:
pass
elif self.bookmark_extension == 'pdr':
from calibre import plugins
try:
self.book_length = plugins['pdfreflow'][0].get_numpages(open(book_fs).read())
except:
pass
else:
print "unsupported bookmark_extension: %s" % self.bookmark_extension
# }}}

333
src/calibre/devices/kindle/driver.py
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@ -7,10 +7,11 @@ __docformat__ = 'restructuredtext en'
''' '''
Device driver for Amazon's Kindle Device driver for Amazon's Kindle
''' '''
import datetime, os, re, sys, json, hashlib
from cStringIO import StringIO
from struct import unpack
import datetime, os, re, sys, json, hashlib
from calibre.devices.kindle.apnx import APNXBuilder
from calibre.devices.kindle.bookmark import Bookmark
from calibre.devices.usbms.driver import USBMS from calibre.devices.usbms.driver import USBMS
''' '''
@ -170,6 +171,8 @@ class KINDLE2(KINDLE):
description = _('Communicate with the Kindle 2/3 eBook reader.') description = _('Communicate with the Kindle 2/3 eBook reader.')
FORMATS = KINDLE.FORMATS + ['pdf'] FORMATS = KINDLE.FORMATS + ['pdf']
DELETE_EXTS = KINDLE.DELETE_EXTS + ['.apnx']
PRODUCT_ID = [0x0002, 0x0004] PRODUCT_ID = [0x0002, 0x0004]
BCD = [0x0100] BCD = [0x0100]
@ -205,6 +208,23 @@ class KINDLE2(KINDLE):
if h in path_map: if h in path_map:
book.device_collections = list(sorted(path_map[h])) book.device_collections = list(sorted(path_map[h]))
def upload_cover(self, path, filename, metadata, filepath):
'''
Hijacking this function to write the apnx file.
'''
if not filepath.lower().endswith('.mobi'):
return
apnx_path = '%s.apnx' % os.path.join(path, filename)
apnx_builder = APNXBuilder()
try:
apnx_builder.write_apnx(filepath, apnx_path)
except:
print 'Failed to generate APNX'
import traceback
traceback.print_exc()
class KINDLE_DX(KINDLE2): class KINDLE_DX(KINDLE2):
name = 'Kindle DX Device Interface' name = 'Kindle DX Device Interface'
@ -214,310 +234,3 @@ class KINDLE_DX(KINDLE2):
PRODUCT_ID = [0x0003] PRODUCT_ID = [0x0003]
BCD = [0x0100] BCD = [0x0100]
class Bookmark(): # {{{
'''
A simple class fetching bookmark data
Kindle-specific
'''
def __init__(self, path, id, book_format, bookmark_extension):
self.book_format = book_format
self.bookmark_extension = bookmark_extension
self.book_length = 0
self.id = id
self.last_read = 0
self.last_read_location = 0
self.path = path
self.timestamp = 0
self.user_notes = None
self.get_bookmark_data()
self.get_book_length()
try:
self.percent_read = min(float(100*self.last_read / self.book_length),100)
except:
self.percent_read = 0
def record(self, n):
from calibre.ebooks.metadata.mobi import StreamSlicer
if n >= self.nrecs:
raise ValueError('non-existent record %r' % n)
offoff = 78 + (8 * n)
start, = unpack('>I', self.data[offoff + 0:offoff + 4])
stop = None
if n < (self.nrecs - 1):
stop, = unpack('>I', self.data[offoff + 8:offoff + 12])
return StreamSlicer(self.stream, start, stop)
def get_bookmark_data(self):
''' Return the timestamp and last_read_location '''
from calibre.ebooks.metadata.mobi import StreamSlicer
user_notes = {}
if self.bookmark_extension == 'mbp':
MAGIC_MOBI_CONSTANT = 150
with open(self.path,'rb') as f:
stream = StringIO(f.read())
data = StreamSlicer(stream)
self.timestamp, = unpack('>I', data[0x24:0x28])
bpar_offset, = unpack('>I', data[0x4e:0x52])
lrlo = bpar_offset + 0x0c
self.last_read = int(unpack('>I', data[lrlo:lrlo+4])[0])
self.last_read_location = self.last_read/MAGIC_MOBI_CONSTANT + 1
entries, = unpack('>I', data[0x4a:0x4e])
# Store the annotations/locations
bpl = bpar_offset + 4
bpar_len, = unpack('>I', data[bpl:bpl+4])
bpar_len += 8
#print "bpar_len: 0x%x" % bpar_len
eo = bpar_offset + bpar_len
# Walk bookmark entries
#print " --- %s --- " % self.path
current_entry = 1
sig = data[eo:eo+4]
previous_block = None
while sig == 'DATA':
text = None
entry_type = None
rec_len, = unpack('>I', data[eo+4:eo+8])
if rec_len == 0:
current_block = "empty_data"
elif data[eo+8:eo+12] == "EBAR":
current_block = "data_header"
#entry_type = "data_header"
location, = unpack('>I', data[eo+0x34:eo+0x38])
#print "data_header location: %d" % location
else:
current_block = "text_block"
if previous_block == 'empty_data':
entry_type = 'Note'
elif previous_block == 'data_header':
entry_type = 'Highlight'
text = data[eo+8:eo+8+rec_len].decode('utf-16-be')
if entry_type:
displayed_location = location/MAGIC_MOBI_CONSTANT + 1
user_notes[location] = dict(id=self.id,
displayed_location=displayed_location,
type=entry_type,
text=text)
eo += rec_len + 8
current_entry += 1
previous_block = current_block
sig = data[eo:eo+4]
while sig == 'BKMK':
# Fix start location for Highlights using BKMK data
end_loc, = unpack('>I', data[eo+0x10:eo+0x14])
if end_loc in user_notes and \
(user_notes[end_loc]['type'] == 'Highlight' or \
user_notes[end_loc]['type'] == 'Note'):
# Switch location to start (0x08:0x0c)
start, = unpack('>I', data[eo+8:eo+12])
user_notes[start] = user_notes[end_loc]
'''
print " %s: swapping 0x%x (%d) to 0x%x (%d)" % (user_notes[end_loc]['type'],
end_loc,
end_loc/MAGIC_MOBI_CONSTANT + 1,
start,
start//MAGIC_MOBI_CONSTANT + 1)
'''
user_notes[start]['displayed_location'] = start/MAGIC_MOBI_CONSTANT + 1
user_notes.pop(end_loc)
else:
# If a bookmark coincides with a user annotation, the locs could
# be the same - cheat by nudging -1
# Skip bookmark for last_read_location
if end_loc != self.last_read:
# print " adding Bookmark at 0x%x (%d)" % (end_loc, end_loc/MAGIC_MOBI_CONSTANT + 1)
displayed_location = end_loc/MAGIC_MOBI_CONSTANT + 1
user_notes[end_loc - 1] = dict(id=self.id,
displayed_location=displayed_location,
type='Bookmark',
text=None)
rec_len, = unpack('>I', data[eo+4:eo+8])
eo += rec_len + 8
sig = data[eo:eo+4]
elif self.bookmark_extension == 'tan':
from calibre.ebooks.metadata.topaz import get_metadata as get_topaz_metadata
def get_topaz_highlight(displayed_location):
# Parse My Clippings.txt for a matching highlight
# Search looks for book title match, highlight match, and location match
# Author is not matched
# This will find the first instance of a clipping only
book_fs = self.path.replace('.%s' % self.bookmark_extension,'.%s' % self.book_format)
with open(book_fs,'rb') as f2:
stream = StringIO(f2.read())
mi = get_topaz_metadata(stream)
my_clippings = self.path
split = my_clippings.find('documents') + len('documents/')
my_clippings = my_clippings[:split] + "My Clippings.txt"
try:
with open(my_clippings, 'r') as f2:
marker_found = 0
text = ''
search_str1 = '%s' % (mi.title)
search_str2 = '- Highlight Loc. %d' % (displayed_location)
for line in f2:
if marker_found == 0:
if line.startswith(search_str1):
marker_found = 1
elif marker_found == 1:
if line.startswith(search_str2):
marker_found = 2
elif marker_found == 2:
if line.startswith('=========='):
break
text += line.strip()
else:
raise Exception('error')
except:
text = '(Unable to extract highlight text from My Clippings.txt)'
return text
MAGIC_TOPAZ_CONSTANT = 33.33
self.timestamp = os.path.getmtime(self.path)
with open(self.path,'rb') as f:
stream = StringIO(f.read())
data = StreamSlicer(stream)
self.last_read = int(unpack('>I', data[5:9])[0])
self.last_read_location = self.last_read/MAGIC_TOPAZ_CONSTANT + 1
entries, = unpack('>I', data[9:13])
current_entry = 0
e_base = 0x0d
while current_entry < entries:
location, = unpack('>I', data[e_base+2:e_base+6])
text = None
text_len, = unpack('>I', data[e_base+0xA:e_base+0xE])
e_type, = unpack('>B', data[e_base+1])
if e_type == 0:
e_type = 'Bookmark'
elif e_type == 1:
e_type = 'Highlight'
text = get_topaz_highlight(location/MAGIC_TOPAZ_CONSTANT + 1)
elif e_type == 2:
e_type = 'Note'
text = data[e_base+0x10:e_base+0x10+text_len]
else:
e_type = 'Unknown annotation type'
displayed_location = location/MAGIC_TOPAZ_CONSTANT + 1
user_notes[location] = dict(id=self.id,
displayed_location=displayed_location,
type=e_type,
text=text)
if text_len == 0xFFFFFFFF:
e_base = e_base + 14
else:
e_base = e_base + 14 + 2 + text_len
current_entry += 1
for location in user_notes:
if location == self.last_read:
user_notes.pop(location)
break
elif self.bookmark_extension == 'pdr':
self.timestamp = os.path.getmtime(self.path)
with open(self.path,'rb') as f:
stream = StringIO(f.read())
data = StreamSlicer(stream)
self.last_read = int(unpack('>I', data[5:9])[0])
entries, = unpack('>I', data[9:13])
current_entry = 0
e_base = 0x0d
self.pdf_page_offset = 0
while current_entry < entries:
'''
location, = unpack('>I', data[e_base+2:e_base+6])
text = None
text_len, = unpack('>I', data[e_base+0xA:e_base+0xE])
e_type, = unpack('>B', data[e_base+1])
if e_type == 0:
e_type = 'Bookmark'
elif e_type == 1:
e_type = 'Highlight'
text = get_topaz_highlight(location/MAGIC_TOPAZ_CONSTANT + 1)
elif e_type == 2:
e_type = 'Note'
text = data[e_base+0x10:e_base+0x10+text_len]
else:
e_type = 'Unknown annotation type'
if self.book_format in ['tpz','azw1']:
displayed_location = location/MAGIC_TOPAZ_CONSTANT + 1
elif self.book_format == 'pdf':
# *** This needs implementation
displayed_location = location
user_notes[location] = dict(id=self.id,
displayed_location=displayed_location,
type=e_type,
text=text)
if text_len == 0xFFFFFFFF:
e_base = e_base + 14
else:
e_base = e_base + 14 + 2 + text_len
current_entry += 1
'''
# Use label as page number
pdf_location, = unpack('>I', data[e_base+1:e_base+5])
label_len, = unpack('>H', data[e_base+5:e_base+7])
location = int(data[e_base+7:e_base+7+label_len])
displayed_location = location
e_type = 'Bookmark'
text = None
user_notes[location] = dict(id=self.id,
displayed_location=displayed_location,
type=e_type,
text=text)
self.pdf_page_offset = pdf_location - location
e_base += (7 + label_len)
current_entry += 1
self.last_read_location = self.last_read - self.pdf_page_offset
else:
print "unsupported bookmark_extension: %s" % self.bookmark_extension
self.user_notes = user_notes
def get_book_length(self):
from calibre.ebooks.metadata.mobi import StreamSlicer
book_fs = self.path.replace('.%s' % self.bookmark_extension,'.%s' % self.book_format)
self.book_length = 0
if self.bookmark_extension == 'mbp':
# Read the book len from the header
try:
with open(book_fs,'rb') as f:
self.stream = StringIO(f.read())
self.data = StreamSlicer(self.stream)
self.nrecs, = unpack('>H', self.data[76:78])
record0 = self.record(0)
self.book_length = int(unpack('>I', record0[0x04:0x08])[0])
except:
pass
elif self.bookmark_extension == 'tan':
# Read bookLength from metadata
from calibre.ebooks.metadata.topaz import MetadataUpdater
try:
with open(book_fs,'rb') as f:
mu = MetadataUpdater(f)
self.book_length = mu.book_length
except:
pass
elif self.bookmark_extension == 'pdr':
from calibre import plugins
try:
self.book_length = plugins['pdfreflow'][0].get_numpages(open(book_fs).read())
except:
pass
else:
print "unsupported bookmark_extension: %s" % self.bookmark_extension
# }}}