APIs for automatic patch generation

Hello,

I would like to generate patches in the Git format for some other software automatically. Which application programming interfaces do you recommend for this purpose if I am going to integrate this into a small C++ class library?
http://www.kernel.org/pub/software/scm/git/docs/v1.7.0/technical/api-index.html
http://git.wiki.kernel.org/index.php/Interfaces,_frontends,_and_tools

Specific use cases:
- Which functions or commands should I call to retrieve the required informations for a line like "index 8d16832..358c98b 100644"?
- Can any functions help to construct proper range specifications for difference hunks?

Regards,
Markus

Hello,

The commands "git diff" and "git format-patch" contain functionality that I would like to reuse for my little application in a C++ class library.

Which functions exist in a C API that can provide the following data?
- a line like "index 8d16832..358c98b 100644"
- range specifications for difference hunks
- mail construction

Regards,
Markus

Heya,

Until libgit2 is done, just shell out and call 'git format-patch'.

[0] http://git.wiki.kernel.org/index.php/SoC2010Ideas#libgit2

Cheers,

Sverre Rabbelier

Thanks for the link.

I do not need the whole functionality of these commands for my library. I am looking if the mentioned data items can also be really retrieved by command line parameters.

Regards,
Markus

Heya,

My answer still holds.

Cheers,

Sverre Rabbelier

Which functions exist in the recently published C API (http://libgit2.github.com/) that can provide the following data?
* a line like "index 8d16832..358c98b 100644"
* range specifications for difference hunks
* mail construction

Regards,
Markus