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tools v3.4

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Apprentice Alf
2011-02-08 17:21:51 +00:00
parent 8b632e309f
commit 2bedd75005
29 changed files with 234 additions and 650 deletions
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4
ePub_Fixer/README_ePub_Fixer.txt
View File

@@ -1,8 +1,8 @@
ePub_Fixer
ePubs are specially crafted zip archives whose first file is an uncompresssed "mimetype" file. Unfortunately, many of the DRM encoded Adobe Adept and Barnes & Noble ePubs are not "proper" zip archives in that the names of some files in the zip central directory do NOT match the local name given in archive itself, or they do not have an uncompressed mimetype file as the first file in the archive. These types of epubs are technically incorrect/corrupted and can not be read by many other programs.
ePubs are specially crafted zip archives. Unfortunately, many of the DRM encoded Adobe Adept and Barnes & Noble ePubs are not "proper" zip archives in that the names of some files in the zip central directory do NOT match the local name given in archive itself. This type of zip archive is technically incorrect/corrupted and can not be read by many other programs.
ePub_Fixer was designed to fix improperly created zip archives of these types.
ePub_Fixer was designed to fix improperly created zip archives of this type.
1. Simply double-click to launch ePub_Fixer.pyw.

36
ePub_Fixer/lib/zipfix.py
View File

@@ -13,9 +13,20 @@ _FILENAME_LEN_OFFSET = 26
_EXTRA_LEN_OFFSET = 28
_FILENAME_OFFSET = 30
_MAX_SIZE = 64 * 1024
_MIMETYPE = 'application/epub+zip'
class ZipInfo(zipfile.ZipInfo):
def __init__(self, *args, **kwargs):
if 'compress_type' in kwargs:
compress_type = kwargs.pop('compress_type')
super(ZipInfo, self).__init__(*args, **kwargs)
self.compress_type = compress_type
class fixZip:
def __init__(self, zinput, zoutput):
self.ztype = 'zip'
if zinput.lower().find('.epub') >= 0 :
self.ztype = 'epub'
self.inzip = zipfile.ZipFile(zinput,'r')
self.outzip = zipfile.ZipFile(zoutput,'w')
# open the input zip for reading only as a raw file
@@ -81,30 +92,15 @@ class fixZip:
# get the zipinfo for each member of the input archive
# and copy member over to output archive
# if problems exist with local vs central filename, fix them
# also fix bad epub compression
# write mimetype file first, if present, and with no compression
for zinfo in self.inzip.infolist():
if zinfo.filename == "mimetype":
nzinfo = zinfo
try:
data = self.inzip.read(zinfo.filename)
except zipfile.BadZipfile or zipfile.error:
local_name = self.getlocalname(zinfo)
data = self.getfiledata(zinfo)
nzinfo.filename = local_name
nzinfo.date_time = zinfo.date_time
nzinfo.compress_type = zipfile.ZIP_STORED
nzinfo.flag_bits = 0
nzinfo.internal_attr = 0
nzinfo.extra = ""
self.outzip.writestr(nzinfo,data)
break
# if epub write mimetype file first, with no compression
if self.ztype == 'epub':
nzinfo = ZipInfo('mimetype', compress_type=zipfile.ZIP_STORED)
self.outzip.writestr(nzinfo, _MIMETYPE)
# write the rest of the files
for zinfo in self.inzip.infolist():
if zinfo.filename != "mimetype":
if zinfo.filename != "mimetype" or self.ztype == '.zip':
data = None
nzinfo = zinfo
try: