问题
Is there a function equivalent to git diff FILE in libgit2? In other words, how to efficiently retrieve the diff of a single file without having libgit2 to look at other files in the working directory?
回答1:
git diff FILE will display the changes you've made relative to the index.
This can be achieved through the use of the libgit2 git_diff_index_to_workdir() function.
This function accepts a git_diff_options structure as a parameter into which you can provide a pathspec, or a list of pathspecs, you're specifically interested in.
More information about this:
- Documentation of this function.
- Unit test leveraging this use case.
来源：https://stackoverflow.com/questions/16563021/how-to-get-the-diff-of-a-single-file-with-libgit2