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Old 02-19-2013, 10:32 PM   #121
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Originally Posted by JSWolf View Post
So it is Calibre's Tweak Book that is undoing the obfuscation in the KF8 and not the plugin. Thanks for the explanation.
You're quite welcome. But I did explain all this to you last time you brought it up (starting at post #32 of this thread).
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Old 02-19-2013, 11:36 PM   #122
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You're quite welcome. But I did explain all this to you last time you brought it up (starting at post #32 of this thread).
But this time, I noticed that I was able to Tweak Book and the fonts would be normal. So I thought the plugin was doing something to the fonts in the new version. Now I know it's Calibre doing it's magic to make the fonts readable.
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Old 02-20-2013, 06:00 AM   #123
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Fascinating. I thought that the calibre team was very keen on not doing anything with DRM. IMO, obfuscation counts as DRM, or more precisely, "a technological measure that effectively controls access to a work".
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Old 02-20-2013, 06:09 AM   #124
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I see we're moving a bit off topic so ... DiapDealer thanks for packaging this as a plugin.

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Originally Posted by pdurrant View Post
Fascinating. I thought that the calibre team was very keen on not doing anything with DRM. IMO, obfuscation counts as DRM, or more precisely, "a technological measure that effectively controls access to a work".
I'm not sure if this is applicable, but this is what Kovid said to Jon a couple of days ago about obfuscated fonts.

Quote:
Originally Posted by kovidgoyal View Post
Quote:
Originally Posted by JSWolf View Post
Speaking of fonts, why does Calibre obfuscate fonts in an AZW3 > ePub conversion?
If they are obfuscated in the azw3 then they will be obfuscated in the epub output. calibre simply preserves the obfuscation status of the font. It does the same thing for epub to epub conversions as well. Though IIRC it does not do it for epub to azw3 conversions, mainly because doing so is technically difficult and I cant be bothered figuring it out, given that fonts are obfuscated enough by the very design of azw3.

Last edited by DoctorOhh; 02-20-2013 at 06:14 AM.
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Old 02-20-2013, 06:23 AM   #125
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I'm not sure if this is applicable, but this is what Kovid said to Jon a couple of days ago about obfuscated fonts.
Ah. But see the flaw? Convert ePub to azw3 and then azw3 to ePub, and the obfuscation is gone. Naughty calibre!
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Old 02-20-2013, 07:24 AM   #126
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Originally Posted by pdurrant View Post
Ah. But see the flaw? Convert ePub to azw3 and then azw3 to ePub, and the obfuscation is gone. Naughty calibre!
You mean as opposed to viewing the epub with the viewer and then copying the unobfuscated fonts out of the temp files? Or running an epub to epub conversion with the debug pipeline option and copying the font files out of the debug directory. Obfuscation is a joke, and a pretty poor one at that. So while I will take reasonable steps to preserve obfuscation, there are limits to how many hoops I am willing to jump through.
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Old 02-20-2013, 08:23 AM   #127
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Originally Posted by kovidgoyal View Post
You mean as opposed to viewing the epub with the viewer and then copying the unobfuscated fonts out of the temp files? Or running an epub to epub conversion with the debug pipeline option and copying the font files out of the debug directory. Obfuscation is a joke, and a pretty poor one at that. So while I will take reasonable steps to preserve obfuscation, there are limits to how many hoops I am willing to jump through.
Entirely your decision. I would just note that doing conversions using the normal interface of calibre is a bit different to the scenarios you mentioned.
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Old 02-20-2013, 09:53 AM   #128
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Entirely your decision. I would just note that doing conversions using the normal interface of calibre is a bit different to the scenarios you mentioned.
The debug pipeline option is part of the normal conversion interface in calibre, see the "Debug" section of the conversion dialog.
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Old 03-07-2013, 12:13 PM   #129
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when i try to extract pdf from azw4 i get this error
calibre, version 0.9.20
ERROR: Unhandled exception: <b>Exception</b>:Problem locating unpacked pdf.

Traceback (most recent call last):
File "calibre_plugins.kindleunpack_plugin.extractio n", line 224, in print_replica
File "calibre_plugins.kindleunpack_plugin.utilities ", line 275, in getPDFFile
Exception: Problem locating unpacked pdf.
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Old 03-07-2013, 12:14 PM   #130
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when i tried again i got following error
calibre, version 0.9.20
ERROR: Unhandled exception: <b>MemoryError</b>:

Traceback (most recent call last):
File "calibre_plugins.kindleunpack_plugin.extractio n", line 224, in print_replica
File "calibre_plugins.kindleunpack_plugin.utilities ", line 265, in getPDFFile
File "calibre_plugins.kindleunpack_plugin.kindleunpack. kindleunpack", line 1489, in unpackBook
File "calibre_plugins.kindleunpack_plugin.kindleunpack. kindleunpack", line 1090, in process_all_mobi_headers
File "calibre_plugins.kindleunpack_plugin.kindleunpack. kindleunpack", line 975, in getRawML
MemoryError
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Old 03-07-2013, 12:18 PM   #131
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I suspect that you don't have much free memory, and a very big PDF. The scripts aren't optimised for memory use.
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Old 03-07-2013, 12:21 PM   #132
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what should i do
i tried on three different computers and i getting same errors
thanks
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Old 03-07-2013, 12:28 PM   #133
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what should i do
i tried on three different computers and i getting same errors
thanks
If you are using a 64-bit OS, try the the plugin with the 64-bit version of Calibre and see if that solves the problem.
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Old 03-07-2013, 12:53 PM   #134
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thanks for your help
it worked like charm
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Old 03-07-2013, 01:47 PM   #135
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thanks for your help
it worked like charm
With Windows, the 32-bit version is limited to 3GB of memory and the 64-bit version is not.
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