src/diff.c


Log

Author Commit Date CI Message
Russell Belfer f335ecd6 2012-08-30T14:24:16 Diff iterators This refactors the diff output code so that an iterator object can be used to traverse and generate the diffs, instead of just the `foreach()` style with callbacks. The code has been rearranged so that the two styles can still share most functions. This also replaces `GIT_REVWALKOVER` with `GIT_ITEROVER` and uses that as a common error code for marking the end of iteration when using a iterator style of object.
Russell Belfer aa13bf05 2012-08-02T13:00:58 Major submodule rewrite This replaces the old submodule API with a new extended API that supports most of the things that can be done with `git submodule`.
Russell Belfer 5fdc41e7 2012-08-22T13:57:57 Minor bug fixes in diff code In looking at PR #878, I found a few small bugs in the diff code, mostly related to work that can be avoided when processing tree- to-tree diffs that was always being carried out. This commit has some small fixes in it.
Vicent Marti c07d9c95 2012-08-09T15:33:04 oid: Explicitly include `oid.h` for the inlined CMP
yorah a1773f9d 2012-07-23T18:16:09 Add flag to turn off pathspec testing for diff and status
yorah ffbc689c 2012-07-18T16:26:55 Fix getting status of files containing brackets
Russell Belfer 71d27358 2012-07-19T10:23:45 Fix bug with merging diffs with null options A diff that is created with a NULL options parameter could result in a NULL prefix string, but diff merge was unconditionally strdup'ing it. I added a test to replicate the issue and then a new method that does the right thing with NULL values.
Carlos Martín Nieto 1d94a7d0 2012-06-20T02:15:42 diff: make sure we free all allocated resources When the creation of one iterator fails, we need to free the prefix and possibly one of the iterators. Make sure we do so.
Russell Belfer da825c92 2012-06-19T14:27:02 Make index add/append support core.filemode flag This fixes git_index_add and git_index_append to behave more like core git, preserving old filemode data in the index when adding and/or appending with core.filemode = false. This also has placeholder support for core.symlinks and core.ignorecase, but those flags are not implemented (well, symlinks has partial support for preserving mode information in the same way that git does, but it isn't tested).
Russell Belfer 145e696b 2012-06-08T11:56:24 Minor fixes, cleanups, and clarifications There are three actual changes in this commit: 1. When the trailing newline of a file is removed in a diff, the change will now be reported with `GIT_DIFF_LINE_DEL_EOFNL` passed to the callback. Previously, the `ADD_EOFNL` constant was given which was just an error in my understanding of when the various circumstances arose. `GIT_DIFF_LINE_ADD_EOFNL` is deprecated and should never be generated. A new newline is simply an `ADD`. 2. Rewrote the `diff_delta__merge_like_cgit` function that contains the core logic of the `git_diff_merge` implementation. The new version doesn't actually have significantly different behavior, but the logic should be much more obvious, I think. 3. Fixed a bug in `git_diff_merge` where it freed a string pool while some of the string data was still in use. This led to `git_diff_print_patch` accessing memory that had been freed. The rest of this commit contains improved documentation in `diff.h` to make the behavior and the equivalencies with core git clearer, and a bunch of new tests to cover the various cases, oh and a minor simplification of `examples/diff.c`.
Russell Belfer 0abd7244 2012-06-04T16:17:41 Fix filemode comparison in diffs File modes were both not being ignored properly on platforms where they should be ignored, nor be diffed consistently on platforms where they are supported. This change adds a number of diff and status filemode change tests. This also makes sure that filemode-only changes are included in the diff output when they occur and that filemode changes are ignored successfully when core.filemode is false. There is no code that automatically toggles core.filemode based on the capabilities of the current platform, so the user still needs to be careful in their .git/config file.
Russell Belfer 2a99df69 2012-05-24T17:14:56 Fix bugs for status with spaces and reloaded attrs This fixes two bugs: * Issue #728 where git_status_file was not working for files that contain spaces. This was caused by reusing the "fnmatch" parsing code from ignore and attribute files to interpret the "pathspec" that constrained the files to apply the status to. In that code, unescaped whitespace was considered terminal to the pattern, so a file with internal whitespace was excluded from the matched files. The fix was to add a mode to that code that allows spaces and tabs inside patterns. This mode only comes into play when parsing in-memory strings. * The other issue was undetected, but it was in the recently added code to reload gitattributes / gitignores when they were changed on disk. That code was not clearing out the old values from the cached file content before reparsing which meant that newly added patterns would be read in, but deleted patterns would not be removed. The fix was to clear the vector of patterns in a cached file before reparsing the file.
Vicent Martí 904b67e6 2012-05-18T01:48:50 errors: Rename error codes
Vicent Martí e172cf08 2012-05-18T01:21:06 errors: Rename the generic return codes
Vicent Martí 29e948de 2012-05-10T10:38:10 global: Change parameter ordering in API Consistency is good.
Russell Belfer bd4ca902 2012-05-16T17:02:06 Fix status for files under ignored dirs There was a bug where tracked files inside directories that were inside ignored directories where not being found by status. To make that a little clearer, if you have a .gitignore with: ignore/ And then have the following files: ignore/dir/tracked <-- actually a tracked file ignore/dir/untracked <-- should be ignored Then we would show the tracked file as being removed (because when we got the to contained item "dir/" inside the ignored directory, we decided it was safe to skip -- bzzt, wrong!). This update is much more careful about checking that we are not skipping over any prefix of a tracked item, regardless of whether it is ignored or not. As documented in diff.c, this commit does create behavior that still differs from core git with regards to the handling of untracked files contained inside ignored directories. With libgit2, those files will just not show up in status or diff. With core git, those files don't show up in status or diff either *unless* they are explicitly ignored by a .gitignore pattern in which case they show up as ignored files. Needless to say, this is a local behavior difference only, so it should not be important and (to me) the libgit2 behavior seems more consistent.
Russell Belfer 41a82592 2012-05-15T14:17:39 Ranged iterators and rewritten git_status_file The goal of this work is to rewrite git_status_file to use the same underlying code as git_status_foreach. This is done in 3 phases: 1. Extend iterators to allow ranged iteration with start and end prefixes for the range of file names to be covered. 2. Improve diff so that when there is a pathspec and there is a common non-wildcard prefix of the pathspec, it will use ranged iterators to minimize excess iteration. 3. Rewrite git_status_file to call git_status_foreach_ext with a pathspec that covers just the one file being checked. Since ranged iterators underlie the status & diff implementation, this is actually fairly efficient. The workdir iterator does end up loading the contents of all the directories down to the single file, which should ideally be avoided, but it is pretty good.
Russell Belfer 7e000ab2 2012-05-08T15:03:59 Add support for diffing index with no HEAD When a repo is first created, there is no HEAD yet and attempting to diff files in the index was showing nothing because a tree iterator could not be constructed. This adds an "empty" iterator and falls back on that when the head cannot be looked up.
Russell Belfer b709e951 2012-05-04T11:06:12 Fix memory leaks and use after free
Vicent Martí 3fbcac89 2012-05-02T19:56:38 Remove old and unused error codes
Vicent Martí 40879fac 2012-05-02T15:59:02 Merge branch 'new-error-handling' into development Conflicts: .travis.yml include/git2/diff.h src/config_file.c src/diff.c src/diff_output.c src/mwindow.c src/path.c tests-clar/clar_helpers.c tests-clar/object/tree/frompath.c tests/t00-core.c tests/t03-objwrite.c tests/t08-tag.c tests/t10-refs.c tests/t12-repo.c tests/t18-status.c tests/test_helpers.c tests/test_main.c
Russell Belfer 16b83019 2012-03-04T23:28:36 Fix usage of "new" for fieldname in public header This should restore the ability to include libgit2 headers in C++ projects. Cherry picked 2de60205dfea2c4a422b2108a5e8605f97c2e895 from development into new-error-handling.
Russell Belfer 821f6bc7 2012-04-26T13:04:54 Fix Win32 warnings
nulltoken eb3d71a5 2012-04-25T22:23:35 diff: fix generation of the header of a removal patch
Russell Belfer 19fa2bc1 2012-04-17T15:12:50 Convert attrs and diffs to use string pools This converts the git attr related code (including ignores) and the git diff related code (and implicitly the status code) to use `git_pools` for storing strings. This reduces the number of small blocks allocated dramatically.
Russell Belfer 14a513e0 2012-04-13T15:00:29 Add support for pathspec to diff and status This adds preliminary support for pathspecs to diff and status. The implementation is not very optimized (it still looks at every single file and evaluated the the pathspec match against them), but it works.
Russell Belfer 7784bcbb 2012-04-11T11:52:59 Refactor git_repository_open with new options Add a new command `git_repository_open_ext` with extended options that control how searching for a repository will be done. The existing `git_repository_open` and `git_repository_discover` are reimplemented on top of it. We may want to change the default behavior of `git_repository_open` but this commit does not do that. Improve support for "gitdir" files where the work dir is separate from the repo and support for the "separate-git-dir" config. Also, add support for opening repos created with `git-new-workdir` script (although I have only confirmed that they can be opened, not that all functions work correctly). There are also a few minor changes that came up: - Fix `git_path_prettify` to allow in-place prettifying. - Fix `git_path_root` to support backslashes on Win32. This fix should help many repo open/discover scenarios - it is the one function called when opening before prettifying the path. - Tweak `git_config_get_string` to set the "out" pointer to NULL if the config value is not found. Allows some other cleanup. - Fix a couple places that should have been calling `git_repository_config__weakptr` and were not. - Fix `cl_git_sandbox_init` clar helper to support bare repos.
Russell Belfer 95dfb031 2012-03-30T14:40:50 Improve config handling for diff,submodules,attrs This adds support for a bunch of core.* settings that affect diff and status, plus fixes up some incorrect implementations of those settings from before. Also, this cleans up the handling of config settings in the new submodules code and in the old attrs/ignore code.
Russell Belfer 1db12b00 2012-03-25T23:04:26 Eliminate hairy COITERATE macro I decided that the COITERATE macro was, in the end causing more confusion that it would save and decided just to write out the loops that I needed for parallel diff list iteration. It is not that much code and this just feels less obfuscated.
Russell Belfer 4b136a94 2012-03-23T09:26:09 Fix crash in new status and add recurse option This fixes the bug that @nulltoken found (thank you!) where if there were untracked directories alphabetically after the last tracked item, the diff implementation would deref a NULL pointer. The fix involved the code which decides if it is necessary to recurse into a directory in the working dir, so it was easy to add a new option `GIT_STATUS_OPT_RECURSE_UNTRACKED_DIRS` to control if the contents of untracked directories should be included in status.
Russell Belfer 66142ae0 2012-03-22T10:44:36 New status fixes This adds support for roughly-right tracking of submodules (although it does not recurse into submodules to detect internal modifications a la core git), and it adds support for including unmodified files in diff iteration if requested.
Russell Belfer a48ea31d 2012-03-21T12:33:09 Reimplment git_status_foreach using git diff This is an initial reimplementation of status using diff a la the way that core git does it.
Russell Belfer 0d0fa7c3 2012-03-16T15:56:01 Convert attr, ignore, mwindow, status to new errors Also cleaned up some previously converted code that still had little things to polish.
Russell Belfer ae9e29fd 2012-03-06T16:14:31 Migrating diff to new error handling Ended up migrating a bunch of upstream functions as well including vector, attr_file, and odb in order to get this to work right.
Russell Belfer 2de60205 2012-03-04T23:28:36 Fix usage of "new" for fieldname in public header This should restore the ability to include libgit2 headers in C++ projects.
Russell Belfer e1bcc191 2012-03-01T11:45:00 Revert GIT_STATUS constants to avoid issues This reverts the changes to the GIT_STATUS constants and adds a new enumeration to describe the type of change in a git_diff_delta. I don't love this solution, but it should prevent strange errors from occurring for now. Eventually, I would like to unify the various status constants, but it needs a larger plan and I just wanted to eliminate this breakage quickly.
Russell Belfer 854eccbb 2012-02-29T12:04:59 Clean up GIT_UNUSED macros on all platforms It turns out that commit 31e9cfc4cbcaf1b38cdd3dbe3282a8f57e5366a5 did not fix the GIT_USUSED behavior on all platforms. This commit walks through and really cleans things up more thoroughly, getting rid of the unnecessary stuff. To remove the use of some GIT_UNUSED, I ended up adding a couple of new iterators for hashtables that allow you to iterator just over keys or just over values. In making this change, I found a bug in the clar tests (where we were doing *count++ but meant to do (*count)++ to increment the value). I fixed that but then found the test failing because it was not really using an empty repo. So, I took some of the code that I wrote for iterator testing and moved it to clar_helpers.c, then made use of that to make it easier to open fixtures on a per test basis even within a single test file.
Russell Belfer 74fa4bfa 2012-02-28T16:14:47 Update diff to use iterators This is a major reorganization of the diff code. This changes the diff functions to use the iterators for traversing the content. This allowed a lot of code to be simplified. Also, this moved the functions relating to outputting a diff into a new file (diff_output.c). This includes a number of other changes - adding utility functions, extending iterators, etc. plus more tests for the diff code. This also takes the example diff.c program much further in terms of emulating git-diff command line options.
Russell Belfer e47329b6 2012-02-13T17:29:30 First pass of diff index to workdir implementation This is an initial version of git_diff_workdir_to_index. It also includes renaming some structures and some refactoring of the existing code so that it could be shared better with the new function. This is not complete since it needs a rebase to get some new odb functions from the upstream branch.
Russell Belfer caf71ec0 2012-02-07T15:30:18 Add tests and fix bugs for diff whitespace options Once I added tests for the whitespace handling options of diff, I realized that there were some bugs. This fixes those and adds the new tests into the test suite.
Russell Belfer a2e895be 2012-02-07T12:14:28 Continue implementation of git-diff * 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
Russell Belfer 5a2f097f 2012-02-03T17:05:05 Fix minor WIN32 incompatibility 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.
Russell Belfer 3a437590 2012-02-03T16:53:01 Clean up diff implementation for review 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.
Russell Belfer 65b09b1d 2012-02-02T18:03:43 Implement diff lists and formatters 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.
Russell Belfer cd33323b 2012-01-27T11:29:25 Initial implementation of git_diff_blob 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).