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* Continue implementation of git-diffRussell Belfer2012-03-021-146/+324
| | | | | | | | * Implemented git_diff_index_to_tree * Reworked git_diff_options structure to handle more options * Made most of the options in git_diff_options actually work * Reorganized code a bit to remove some redundancy * Added option parsing to examples/diff.c to test most options
* Fix minor WIN32 incompatibilityRussell Belfer2012-03-021-1/+4
| | | | | | | | File mode flags are not all defined on WIN32, but since git is so rigid in how it uses file modes, there is no reason not to hard code a particular value. Also, this is only used in the git_diff_print_compact helper function, so it is really really not important.
* Clean up diff implementation for reviewRussell Belfer2012-03-021-62/+261
| | | | | | | This fixes several bugs, updates tests and docs, eliminates the FILE* assumption in favor of printing callbacks for the diff patch formatter helpers, and adds a "diff" example function that can perform a diff from the command line.
* Implement diff lists and formattersRussell Belfer2012-03-021-29/+455
| | | | | | | | This reworks the diff API to separate the steps of producing a diff descriptions from formatting the diff. This will allow us to share diff output code with the various diff creation scenarios and will allow us to implement rename detection as an optional pass that can be run on a diff list.
* Initial implementation of git_diff_blobRussell Belfer2012-03-021-0/+104
This gets the basic plumbing in place for git_diff_blob. There is a known issue where additional parameters like the number of lines of context to display on the diff are not working correctly (which leads one of the new unit tests to fail).