How to unpack .pak files and then repack them on Linux?

[Crammo Crammowski]

I want to add something to incognito newtab, so I need to unpack resources.pak. But how to do it?

[Robert Flack]

I don't believe there are tools in the chrome tree for doing so but the file format is fairly simple:

4 byte version number
4 byte number of resources
1 byte encoding

For each resource:
2 byte resource id
4 byte resource offset in file

There is an extra resource entry at the end with ID 0 giving the end of the last resource (which is essentially the length of the file).

After these resource entries the raw file data is written for each file. You can see the file ui/base/resource/data_pack_literal.cc in the chromium source tree for a couple commented example resource files.

On Jun 9, 2012 3:32 AM, "Crammo Crammowski" <cra...@gmail.com> wrote:

I want to add something to incognito newtab, so I need to unpack resources.pak. But how to do it?

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[Evan Martin]

This python module can unpack and repack files:
http://code.google.com/searchframe#OAMlx_jo-ck/src/tools/grit/grit/format/data_pack.py&exact_package=chromium&ct=rc&cd=3&q=data_pack

On Sat, Jun 9, 2012 at 12:32 AM, Crammo Crammowski <cra...@gmail.com> wrote:
> I want to add something to incognito newtab, so I need to unpack
> resources.pak. But how to do it?
>

[Paweł Hajdan, Jr.]

Why not start with a source tree checkout, make a patch there, and use the regular build process to build .paks?

On Sat, Jun 9, 2012 at 9:32 AM, Crammo Crammowski <cra...@gmail.com> wrote:

I want to add something to incognito newtab, so I need to unpack resources.pak. But how to do it?

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[李少杰]

modify the ReadDataPack function in data_pack.py, you can write resource data to files while reading them.

my version here:http://blog.csdn.net/jokers_i/article/details/8802352

在 2012年6月9日星期六UTC+8下午3时32分31秒，Crammo Crammowski写道：