kmx git

Commit	Date	Message
b1ff7004	2013-04-22T16:25:57	Improve diff config options handling This makes diff use the cvar cache for config options where possible, and also adds support for a number of other config options to diff including "diff.context", "diff.ignoreSubmodules", "diff.noprefix", "diff.mnemonicprefix", and "core.abbrev". To make this natural, this involved a rearrangement of the code that allocates the diff object vs. the code that initializes it based on the combination of options passed in by the user and read from the config. This commit includes tests for most of these new options as well.
ad26434b	2013-04-09T14:52:32	Tests and more fixes for submodule diffs This adds tests for diffs with submodules in them and (perhaps unsurprisingly) requires further fixes to be made. Specifically, this fixes: - when considering if a submodule is dirty in the workdir, it was being treated as dirty even if only the index was dirty. - git_diff_patch_to_str (and git_diff_patch_print) were "printing" the headers for files (and submodules) that were unmodified or had no meaningful content. - added comment to previous fix and removed unneeded parens.
94750e8a	2013-03-29T11:52:18	Fix submodule dirty states not showing if submodules comes before files, or there are only dirty submodules but no changed files GIT_DIFF_PATCH_DIFFABLE was not set, so the diff content was not shown When submodule is dirty, the hash may be the same, but the length is different because -dirty is appended We can therefore compare the length or hash
3658e81e	2013-03-25T14:20:07	Move crlf conversion into buf_text This adds crlf/lf conversion functions into buf_text with more efficient implementations that bypass the high level buffer functions. They attempt to minimize the number of reallocations done and they directly write the buffer data as needed if they know that there is enough memory allocated to memcpy data. Tests are added for these new functions. The crlf.c code is updated to use the new functions. Removed the include of buf_text.h from filter.h and just include it more narrowly in the places that need it.
65025cb8	2013-03-18T17:24:13	Three submodule status bug fixes 1. Fix sort order problem with submodules where "mod" was sorting after "mod-plus" because they were being sorted as "mod/" and "mod-plus/". This involved pushing the "contains a .git entry" test significantly lower in the stack. 2. Reinstate behavior that a directory which contains a .git entry will be treated as a submodule during iteration even if it is not yet added to the .gitmodules. 3. Now that any directory containing .git is reported as submodule, we have to be more careful checking for GIT_EEXISTS when we do a submodule lookup, because that is the error code that is returned by git_submodule_lookup when you try to look up a directory containing .git that has no record in gitmodules or the index.
10c06114	2013-03-17T04:46:46	Several warnings detected by static code analyzer fixed Implicit type conversion argument of function to size_t type Suspicious sequence of types castings: size_t -> int -> size_t Consider reviewing the expression of the 'A = B == C' kind. The expression is calculated as following: 'A = (B == C)' Unsigned type is never < 0
d85296ab	2013-03-14T13:50:54	Fix valgrind issues (and mmap fallback for diff) This fixes a number of issues identified by valgrind - mostly missed free calls. Inside valgrind, mmap() may fail which causes some of the diff tests to fail. This adds a fallback code path to diff_output.c:get_workdir_content() where is the mmap() fails the code will now try to read the file data directly into allocated memory (which is what it would do if the data needed to be filtered anyhow).
1aa5318a	2013-03-09T16:04:34	diff: allow asking for diffs with no context Previously, 0 meant default. This is problematic, as asking for 0 context lines is a valid thing to do. Change GIT_DIFF_OPTIONS_INIT to default to three and stop treating 0 as a magic value. In case no options are provided, make sure the options in the diff object default to 3.
323bb885	2013-03-04T00:21:56	Fix a few leaks `git_diff_get_patch()` would unconditionally load the patch object and then simply leak it if the user hadn't requested it. Short-circuit loading the object if the user doesn't want it. The rest of the plugs are simply calling the free functions of objects allocated during the tests.
960a04dd	2013-02-21T12:40:33	Initial integration of similarity metric to diff This is the initial integration of the similarity metric into the `git_diff_find_similar()` code path. The existing tests all pass, but the new functionality isn't currently well tested. The integration does go through the pluggable metric interface, so it should be possible to drop in an alternative to the internal metric that libgit2 implements. This comes along with a behavior change for an existing interface; namely, passing two NULLs to git_diff_blobs (or passing NULLs to git_diff_blob_to_buffer) will now call the file_cb parameter zero times instead of one time. I know it's strange that that change is paired with this other change, but it emerged from some initialization changes that I ended up making.
71a3d27e	2013-02-08T10:06:47	Replace diff delta binary with flags Previously the git_diff_delta recorded if the delta was binary. This replaces that (with no net change in structure size) with a full set of flags. The flag values that were already in use for individual git_diff_file objects are reused for the delta flags, too (along with renaming those flags to make it clear that they are used more generally). This (a) makes things somewhat more consistent (because I was using a -1 value in the "boolean" binary field to indicate unset, whereas now I can just use the flags that are easier to understand), and (b) will make it easier for me to add some additional flags to the delta object in the future, such as marking the results of a copy/rename detection or other deltas that might want a special indicator. While making this change, I officially moved some of the flags that were internal only into the private diff header. This also allowed me to remove a gross hack in rename/copy detect code where I was overwriting the status field with an internal value.
56543a60	2013-02-15T16:02:45	Clear up warnings from cppcheck The cppcheck static analyzer generates warnings for a bunch of places in the libgit2 code base. All the ones fixed in this commit are actually false positives, but I've reorganized the code to hopefully make it easier for static analysis tools to correctly understand the structure. I wouldn't do this if I felt like it was making the code harder to read or worse for humans, but in this case, these fixes don't seem too bad and will hopefully make it easier for better analysis tools to get at any real issues.
ed55fd8b	2013-02-11T13:29:07	Reorganize FORCE_TEXT diff flag checks
c2907575	2013-01-15T09:24:17	Add FORCE_TEXT check into git_diff_blobs code path `git_diff_blobs` and `git_diff_blob_to_buffer` skip the step where we check file attributes because they don't have a filename associated with the data. Unfortunately, this meant they were also skipping the check for the GIT_DIFF_FORCE_TEXT option and so you could not force a diff of an apparent binary file. This adds the force text check into their code path.
3ad05221	2013-02-05T16:52:56	Fix MSVC compilation warnings Fix #1308
f1e2735c	2013-01-30T11:10:39	Add helper for diff line stats This adds a `git_diff_patch_line_stats()` API that gets the total number of adds, deletes, and context lines in a patch. This will make it a little easier to emulate `git diff --stat` and the like. Right now, this relies on generating the `git_diff_patch` object, which is a pretty heavyweight way to get stat information. At some future point, it would probably be nice to be able to get this information without allocating the entire `git_diff_patch`, but that's a much larger project.
134d8c91	2013-01-08T15:53:13	Update iterator API with flags for ignore_case This changes the iterator API so that flags can be passed in to the constructor functions to control the ignore_case behavior. At this point, the flags are not supported on tree iterators (i.e. there is no functional change over the old API), but the API changes are all made to accomodate this. By the way, I went with a flags parameter because in the future I have a couple of other ideas for iterator flags that will make it easier to fix some diff/status/checkout bugs.
facc0650	2013-01-08T13:27:25	Simplify git_diff__paired_foreach icase handling
5b524d69	2013-01-12T19:37:14	Fix Travis compilation warnings
160e4fb7	2013-01-11T11:35:09	Merge pull request #1230 from arrbee/match-core-git-diff-binary-detection Match binary file check of core git in diff
0d65acad	2013-01-11T11:24:26	Match binary file check of core git in diff Core git just looks for NUL bytes in files when deciding about is-binary inside diff (although it uses a better algorithm in checkout, when deciding if CRLF conversion should be done). Libgit2 was using the better algorithm in both places, but that is causing some confusion. For now, this makes diff just look for NUL bytes to decide if a file is binary by content in diff.
805c476c	2013-01-11T11:20:44	Fix diff patch line number calculation This was just wrong. Added a test that verifying patch line numbers even for hunks further into a file and then fixed the algorithm. I needed to add a little extra state into the patch so that I could track old and new file numbers independently, but it should be okay.
de590550	2013-01-08T17:11:11	Resolve crash with diff against empty file It is not legal inside our `p_mmap` function to mmap a zero length file. This adds a test that exercises that case inside diff and fixes the code path where we would try to do that. The fix turns out not to be a lot of code since our default file content is already initialized to "" which works in this case. Fixes #1210
359fc2d2	2013-01-08T17:07:25	update copyrights
f2b7f7a6	2013-01-07T15:44:22	Share git_diff_blobs/git_diff_blob_to_buffer code This moves the implementation of these two APIs into common code that will be shared between the two. Also, this adds tests for the `git_diff_blob_to_buffer` API. Lastly, this adds some extra `const` to a few places that can use it.
f6234cd9	2012-12-21T20:57:43	Introduce git_diff_blob_to_buffer
c7231c45	2012-11-30T16:31:42	Deploy GITERR_CHECK_VERSION
2f8d30be	2012-11-29T15:05:04	Deploy GIT_DIFF_OPTIONS_INIT
7bf87ab6	2012-11-28T09:58:48	Consolidate text buffer functions There are many scattered functions that look into the contents of buffers to do various text manipulations (such as escaping or unescaping data, calculating text stats, guessing if content is binary, etc). This groups all those functions together into a new file and converts the code to use that. This has two enhancements to existing functionality. The old text stats function is significantly rewritten and the BOM detection code was extended (although largely we can't deal with anything other than a UTF8 BOM).
a8122b5d	2012-11-21T15:39:03	Fix warnings on Win64 build
9cd42358	2012-11-20T16:57:16	API updates for submodule.h
793c4385	2012-11-20T16:36:06	Update diff callback param order This makes the diff functions that take callbacks both take the payload parameter after the callback function pointers and pass the payload as the last argument to the callback function instead of the first. This should make them consistent with other callbacks across the API.
cfbe4be3	2012-11-17T19:54:47	More external API cleanup Conflicts: src/branch.c tests-clar/refs/branches/create.c
0f3def71	2012-11-09T11:19:46	Fix various cross-platform build issues This fixes a number of warnings and problems with cross-platform builds. Among other things, it's not safe to name a member of a structure "strcmp" because that may be #defined.
55cbd05b	2012-11-08T16:56:34	Some diff refactorings to help code reuse There are some diff functions that are useful in a rewritten checkout and this lays some groundwork for that. This contains three main things: 1. Share the function diff uses to calculate the OID for a file in the working directory (now named `git_diff__oid_for_file` 2. Add a `git_diff__paired_foreach` function to iterator over two diff lists concurrently. Convert status to use it. 3. Move all the string/prefix/index entry comparisons into function pointers inside the `git_diff_list` object so they can be switched between case sensitive and insensitive versions. This makes them easier to reuse in various functions without replicating logic. As part of this, move a couple of index functions out of diff.c and into index.c.
cb7180a6	2012-10-25T11:48:39	Add git_diff_patch_print This adds a `git_diff_patch_print()` API which is more like the existing API to "print" a patch from an entire `git_diff_list` but operates on a single `git_diff_patch` object. Also, it rewrites the `git_diff_patch_to_str()` API to use that function (making it very small).
3943dc78	2012-10-25T11:12:56	Check errors while generating diff patch string
93cf7bb8	2012-10-24T20:56:32	Add git_diff_patch_to_str API This adds an API to generate a complete single-file patch text from a git_diff_patch object.
0d64bef9	2012-10-05T15:56:57	Add complex checkout test and then fix checkout This started as a complex new test for checkout going through the "typechanges" test repository, but that revealed numerous issues with checkout, including: * complete failure with submodules * failure to create blobs with exec bits * problems when replacing a tree with a blob because the tree "example/" sorts after the blob "example" so the delete was being processed after the single file blob was created This fixes most of those problems and includes a number of other minor changes that made it easier to do that, including improving the TYPECHANGE support in diff/status, etc.
5d1308f2	2012-10-08T15:19:00	Add test for diffs with submodules and bug fixes The adds a test for the submodule diff capabilities and then fixes a few bugs with how the output is generated. It improves the accuracy of OIDs in the diff delta object and makes the submodule output more closely mirror the OIDs that will be used by core git.
dfbff793	2012-10-08T15:14:12	Fix a few diff bugs with directory content There are a few cases where diff should leave directories in the diff list if we want to match core git, such as when the directory contains a .git dir. That feature was lost when I introduced some of the new submodule handling. This restores that and then fixes a couple of related to diff output that are triggered by having diffs with directories in them. Also, this adds a new flag that can be passed to diff if you want diff output to actually include the file content of any untracked files.
1686641f	2012-10-05T13:03:22	Extract submodule logic out of diff_output.c:get_workdir_content
7e57d250	2012-09-18T23:43:23	Diff: teach get_workdir_content to show a submodule as text 1. teach diff.c:maybe_modified to query git_submodule_status for the modification state of a submodule. According to the git_submodule_status docs, it will filter for to-ignore states already. 2. teach diff_output.c:get_workdir_content to check the submodule status again and create a line like: Subproject commit <SHA-1>\n or Subproject comimt <SHA-1>-dirty\n like git.git does.
9ce44f1a	2012-09-18T22:35:09	Diff: teach get_blob_content to show a submodule as text diff_output.c:get_blob_content used to try to read the submodule commit as a blob in the superproject's odb. Of course it cannot find it and errors out with GIT_ENOTFOUND, implcitly terminating the whole diff output. This patch teaches it to create a text that describes the submodule instead. The text looks like: Subproject commit <SHA1>\n which is what git.git does, too.
1a5cd26b	2012-10-05T13:02:35	Fix minor whitespace issue
cc5bf359	2012-09-28T09:08:09	Clean up Win64 warnings
bae957b9	2012-09-25T16:31:46	Add const to all shared pointers in diff API There are a lot of places where the diff API gives the user access to internal data structures and many of these were being exposed through non-const pointers. This replaces them all with const pointers for any object that the user can access but is still owned internally to the git_diff_list or git_diff_patch objects. This will probably break some bindings... Sorry!
64286308	2012-09-25T10:48:50	Fix bugs in new diff patch code This fixes all the bugs in the new diff patch code. The only really interesting one is that when we merge two diffs, we now have to actually exclude diff delta records that are not supposed to be tracked, as opposed to before where they could be included because they would be skipped silently by `git_diff_foreach()`. Other than that, there are just minor errors.
5f69a31f	2012-09-24T20:52:34	Initial implementation of new diff patch API Replacing the `git_iterator` object, this creates a simple API for accessing the "patch" for any file pair in a diff list and then gives indexed access to the hunks in the patch and the lines in the hunk. This is the initial implementation of this revised API - it is still broken, but at least builds cleanly.
9ac8b113	2012-09-20T14:06:49	Fix MSVC amd64 compilation warnings
12b6af17	2012-09-13T14:15:07	Forgot to reset hunk & line between files The last change tweaked the way we use the hunk_curr pointer during iteration, but failed to reset the value back to NULL when switching files.
49d34c1c	2012-09-13T13:17:38	Fix problems in diff iterator record chaining There is a bug in building the linked list of line records in the diff iterator and also an off by one element error in the hunk counts. This fixes both of these, adds some test data with more complex sets of hunk and line diffs to exercise this code better.
1f35e89d	2012-09-11T12:03:33	Fix diff binary file detection In the process of adding tests for the max file size threshold (which treats files over a certain size as binary) there seem to be a number of problems in the new code with detecting binaries. This should fix those up, as well as add a test for the file size threshold stuff. Also, this un-deprecates `GIT_DIFF_LINE_ADD_EOFNL`, since I finally found a legitimate situation where it would be returned.
c6ac28fd	2012-09-10T12:24:05	Reorg internal odb read header and object lookup Often `git_odb_read_header` will "fail" and have to read the entire object into memory instead of just the header. When this happens, the object is loaded and then disposed of immediately, which makes it difficult to efficiently use the header information to decide if the object should be loaded (since attempting to do so will often result in loading the object twice). This commit takes the existing code and reorganizes it to have two new functions: - `git_odb__read_header_or_object` which acts just like the old read header function except that it returns the object, too, if it was forced to load the whole thing. It then becomes the callers responsibility to free the `git_odb_object`. - `git_object__from_odb_object` which was extracted from the old `git_object_lookup` and creates a subclass of `git_object` from an existing `git_odb_object` (separating the ODB lookup from the `git_object` creation). This allows you to use the first header reading function efficiently without instantiating the `git_odb_object` twice. There is no net change to the behavior of any of the existing functions, but this allows internal code to tap into the ODB lookup and object creation to be more efficient.
e597b189	2012-09-10T11:49:12	Move diff max_size to public API This commit adds a max_size value in the public `git_diff_options` structure so that the user can automatically flag blobs over a certain size as binary regardless of other properties. Also, and perhaps more importantly, this moves binary detection to be as early as possible in the diff traversal inner loop and makes sure that we stop loading objects as soon as we decide that they are binary.
b36effa2	2012-09-10T09:59:14	Replace git_diff_iterator_num_files with progress The `git_diff_iterator_num_files` API was problematic, since we don't actually know the exact number of files to be iterated over until we load those files into memory. This replaces it with a new `git_diff_iterator_progress` API that goes from 0 to 1, and moves and renamed the old API for the internal places that can tolerate a max value instead of an exact value.
3a3deea8	2012-09-06T15:45:50	Clean up blob diff path Previously when diffing blobs, the diff code just ran with a NULL repository object. Of course, that's not necessary and the test for a NULL repo was confusing. This makes the blob diff run with the repo that contains the blobs and clarifies the test that it is possible to be diffing data where the path is unknown.
60b9d3fc	2012-09-05T15:00:40	Implement filters for status/diff blobs This adds support to diff and status for running filters (a la crlf) on blobs in the workdir before computing SHAs and before generating text diffs. This ended up being a bit more code change than I had thought since I had to reorganize some of the diff logic to minimize peak memory use when filtering blobs in a diff. This also adds a cap on the maximum size of data that will be loaded to diff. I set it at 512Mb which should match core git. Right now it is a #define in src/diff.h but it could be moved into the public API if desired.
01ae1909	2012-09-06T10:13:38	diff: Cleanup documentation and printf compat
510f1bac	2012-08-30T16:39:05	Fix comments and a minor bug This adds better header comments and also fixes a bug in one of simple APIs that tells the number of lines in the current hunk.
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.
b97c169e	2012-09-04T10:01:18	Fix MSVC compilation warnings
5f4a61ae	2012-08-09T19:43:25	Working implementation of git_submodule_status This is a big redesign of the git_submodule_status API and the implementation of the redesigned API. It also fixes a number of bugs that I found in other parts of the submodule API while writing the tests for the status part. This also fixes a couple of bugs in the iterators that had not been noticed before - one with iterating when there is a gitlink (i.e. separate-work-dir) and one where I was treating anything even vaguely submodule-like as a submodule, more aggressively than core git does.
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.
c07d9c95	2012-08-09T15:33:04	oid: Explicitly include `oid.h` for the inlined CMP
5dca2010	2012-08-03T17:08:01	Update iterators for consistency across library This updates all the `foreach()` type functions across the library that take callbacks from the user to have a consistent behavior. The rules are: * A callback terminates the loop by returning any non-zero value * Once the callback returns non-zero, it will not be called again (i.e. the loop stops all iteration regardless of state) * If the callback returns non-zero, the parent fn returns GIT_EUSER * Although the parent returns GIT_EUSER, no error will be set in the library and `giterr_last()` will return NULL if called. This commit makes those changes across the library and adds tests for most of the iteration APIs to make sure that they follow the above rules.
29f9186d	2012-07-02T11:18:01	diff: make inter-hunk-context default value git-compliant Default in git core is 0, not 3
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`.
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.
3f035860	2012-06-07T22:43:03	misc: Fix warnings from PVS Studio trial
2ab9dcbd	2012-05-27T16:47:56	Fix checking for the presence of a flag
29e948de	2012-05-10T10:38:10	global: Change parameter ordering in API Consistency is good.
b59c73d3	2012-05-17T13:06:20	Optimize away git_text_gather_stats in diff GProf shows `git_text_gather_stats` as the most expensive call in large diffs. The function calculates a lot of information that is not actually used and does not do so in a optimal order. This introduces a tuned `git_buf_is_binary` function that executes the same algorithm in a fraction of the time.
9a29f8d5	2012-05-04T07:55:09	diff: fix the diffing of two identical blobs
28ef7f9b	2012-05-03T17:25:01	diff: make git_diff_blobs() able to detect binary blobs
245c5eae	2012-05-03T16:34:02	diff: When diffing two blobs, ensure the delta callback parameter is filled with relevant information
4f806761	2012-05-03T17:19:06	diff: fix the diffing of a concrete blob against a null one
8d0f4675	2012-05-03T16:27:22	diff: remove unused parameter
f917481e	2012-05-03T16:37:25	Support reading attributes from index Depending on the operation, we need to consider gitattributes in both the work dir and the index. This adds a parameter to all of the gitattributes related functions that allows user control of attribute reading behavior (i.e. prefer workdir, prefer index, only use index). This fix also covers allowing us to check attributes (and hence do diff and status) on bare repositories. This was a somewhat larger change that I hoped because it had to change the cache key used for gitattributes files.
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
3fd99be9	2012-03-05T09:30:17	Convert from strnlen to git_text_is_binary Since strnlen is not supported on all platforms and since we now have the shiny new git_text_is_binary in the filtering code, let's convert diff binary detection to use the new stuff.
8b2bcfbe	2012-03-05T09:14:56	Copy values to avoid strict aliasing warning To make this code more resilient to future changes, we'll explicitly translate the libgit2 structure to the libxdiff structure.
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.
1d2dd864	2012-04-29T19:42:51	diff: provide more context to the consumer of the callbacks Update the callback to provide some information related to the file change being processed and the range of the hunk, when applicable.
eb3d71a5	2012-04-25T22:23:35	diff: fix generation of the header of a removal patch
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.
7826d577	2012-03-21T10:00:54	diff_output: remove unused parameter Signed-off-by: schu <schu-github@schulog.org>
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.
cb8a7961	2012-03-07T00:02:55	error-handling: Repository This also includes droping `git_buf_lasterror` because it makes no sense in the new system. Note that in most of the places were it has been dropped, the code needs cleanup. I.e. GIT_ENOMEM is going away, so instead it should return a generic `-1` and obviously not throw anything.
5621d809	2012-03-06T17:51:04	Rename git_oid_to_string to git_oid_tostr To conform the naming scheme of git_oid_fromstr we should change the name of git_oid_to_string to git_oid_tostr.
c4c4bc1f	2012-03-05T09:30:17	Convert from strnlen to git_text_is_binary Since strnlen is not supported on all platforms and since we now have the shiny new git_text_is_binary in the filtering code, let's convert diff binary detection to use the new stuff.
28b486b2	2012-03-05T09:14:56	Copy values to avoid strict aliasing warning To make this code more resilient to future changes, we'll explicitly translate the libgit2 structure to the libxdiff structure.
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.
529df4df	2012-03-02T15:57:06	Fixes for merge of filters branch
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.
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.
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.

b1ff7004

2013-04-22T16:25:57

Improve diff config options handling This makes diff use the cvar cache for config options where possible, and also adds support for a number of other config options to diff including "diff.context", "diff.ignoreSubmodules", "diff.noprefix", "diff.mnemonicprefix", and "core.abbrev". To make this natural, this involved a rearrangement of the code that allocates the diff object vs. the code that initializes it based on the combination of options passed in by the user and read from the config. This commit includes tests for most of these new options as well.

ad26434b

2013-04-09T14:52:32

Tests and more fixes for submodule diffs This adds tests for diffs with submodules in them and (perhaps unsurprisingly) requires further fixes to be made. Specifically, this fixes: - when considering if a submodule is dirty in the workdir, it was being treated as dirty even if only the index was dirty. - git_diff_patch_to_str (and git_diff_patch_print) were "printing" the headers for files (and submodules) that were unmodified or had no meaningful content. - added comment to previous fix and removed unneeded parens.

94750e8a

2013-03-29T11:52:18

Fix submodule dirty states not showing if submodules comes before files, or there are only dirty submodules but no changed files GIT_DIFF_PATCH_DIFFABLE was not set, so the diff content was not shown When submodule is dirty, the hash may be the same, but the length is different because -dirty is appended We can therefore compare the length or hash

3658e81e

2013-03-25T14:20:07

Move crlf conversion into buf_text This adds crlf/lf conversion functions into buf_text with more efficient implementations that bypass the high level buffer functions. They attempt to minimize the number of reallocations done and they directly write the buffer data as needed if they know that there is enough memory allocated to memcpy data. Tests are added for these new functions. The crlf.c code is updated to use the new functions. Removed the include of buf_text.h from filter.h and just include it more narrowly in the places that need it.

65025cb8

2013-03-18T17:24:13

Three submodule status bug fixes 1. Fix sort order problem with submodules where "mod" was sorting after "mod-plus" because they were being sorted as "mod/" and "mod-plus/". This involved pushing the "contains a .git entry" test significantly lower in the stack. 2. Reinstate behavior that a directory which contains a .git entry will be treated as a submodule during iteration even if it is not yet added to the .gitmodules. 3. Now that any directory containing .git is reported as submodule, we have to be more careful checking for GIT_EEXISTS when we do a submodule lookup, because that is the error code that is returned by git_submodule_lookup when you try to look up a directory containing .git that has no record in gitmodules or the index.

10c06114

2013-03-17T04:46:46

Several warnings detected by static code analyzer fixed Implicit type conversion argument of function to size_t type Suspicious sequence of types castings: size_t -> int -> size_t Consider reviewing the expression of the 'A = B == C' kind. The expression is calculated as following: 'A = (B == C)' Unsigned type is never < 0

d85296ab

2013-03-14T13:50:54

Fix valgrind issues (and mmap fallback for diff) This fixes a number of issues identified by valgrind - mostly missed free calls. Inside valgrind, mmap() may fail which causes some of the diff tests to fail. This adds a fallback code path to diff_output.c:get_workdir_content() where is the mmap() fails the code will now try to read the file data directly into allocated memory (which is what it would do if the data needed to be filtered anyhow).

1aa5318a

2013-03-09T16:04:34

diff: allow asking for diffs with no context Previously, 0 meant default. This is problematic, as asking for 0 context lines is a valid thing to do. Change GIT_DIFF_OPTIONS_INIT to default to three and stop treating 0 as a magic value. In case no options are provided, make sure the options in the diff object default to 3.

323bb885

2013-03-04T00:21:56

Fix a few leaks `git_diff_get_patch()` would unconditionally load the patch object and then simply leak it if the user hadn't requested it. Short-circuit loading the object if the user doesn't want it. The rest of the plugs are simply calling the free functions of objects allocated during the tests.

960a04dd

2013-02-21T12:40:33

Initial integration of similarity metric to diff This is the initial integration of the similarity metric into the `git_diff_find_similar()` code path. The existing tests all pass, but the new functionality isn't currently well tested. The integration does go through the pluggable metric interface, so it should be possible to drop in an alternative to the internal metric that libgit2 implements. This comes along with a behavior change for an existing interface; namely, passing two NULLs to git_diff_blobs (or passing NULLs to git_diff_blob_to_buffer) will now call the file_cb parameter zero times instead of one time. I know it's strange that that change is paired with this other change, but it emerged from some initialization changes that I ended up making.

71a3d27e

2013-02-08T10:06:47

Replace diff delta binary with flags Previously the git_diff_delta recorded if the delta was binary. This replaces that (with no net change in structure size) with a full set of flags. The flag values that were already in use for individual git_diff_file objects are reused for the delta flags, too (along with renaming those flags to make it clear that they are used more generally). This (a) makes things somewhat more consistent (because I was using a -1 value in the "boolean" binary field to indicate unset, whereas now I can just use the flags that are easier to understand), and (b) will make it easier for me to add some additional flags to the delta object in the future, such as marking the results of a copy/rename detection or other deltas that might want a special indicator. While making this change, I officially moved some of the flags that were internal only into the private diff header. This also allowed me to remove a gross hack in rename/copy detect code where I was overwriting the status field with an internal value.

56543a60

2013-02-15T16:02:45

Clear up warnings from cppcheck The cppcheck static analyzer generates warnings for a bunch of places in the libgit2 code base. All the ones fixed in this commit are actually false positives, but I've reorganized the code to hopefully make it easier for static analysis tools to correctly understand the structure. I wouldn't do this if I felt like it was making the code harder to read or worse for humans, but in this case, these fixes don't seem too bad and will hopefully make it easier for better analysis tools to get at any real issues.

ed55fd8b

2013-02-11T13:29:07

Reorganize FORCE_TEXT diff flag checks

c2907575

2013-01-15T09:24:17

Add FORCE_TEXT check into git_diff_blobs code path `git_diff_blobs` and `git_diff_blob_to_buffer` skip the step where we check file attributes because they don't have a filename associated with the data. Unfortunately, this meant they were also skipping the check for the GIT_DIFF_FORCE_TEXT option and so you could not force a diff of an apparent binary file. This adds the force text check into their code path.

3ad05221

2013-02-05T16:52:56

Fix MSVC compilation warnings Fix #1308

f1e2735c

2013-01-30T11:10:39

Add helper for diff line stats This adds a `git_diff_patch_line_stats()` API that gets the total number of adds, deletes, and context lines in a patch. This will make it a little easier to emulate `git diff --stat` and the like. Right now, this relies on generating the `git_diff_patch` object, which is a pretty heavyweight way to get stat information. At some future point, it would probably be nice to be able to get this information without allocating the entire `git_diff_patch`, but that's a much larger project.

134d8c91

2013-01-08T15:53:13

Update iterator API with flags for ignore_case This changes the iterator API so that flags can be passed in to the constructor functions to control the ignore_case behavior. At this point, the flags are not supported on tree iterators (i.e. there is no functional change over the old API), but the API changes are all made to accomodate this. By the way, I went with a flags parameter because in the future I have a couple of other ideas for iterator flags that will make it easier to fix some diff/status/checkout bugs.

facc0650

2013-01-08T13:27:25

Simplify git_diff__paired_foreach icase handling

5b524d69

2013-01-12T19:37:14

Fix Travis compilation warnings

160e4fb7

2013-01-11T11:35:09

Merge pull request #1230 from arrbee/match-core-git-diff-binary-detection Match binary file check of core git in diff

0d65acad

2013-01-11T11:24:26

Match binary file check of core git in diff Core git just looks for NUL bytes in files when deciding about is-binary inside diff (although it uses a better algorithm in checkout, when deciding if CRLF conversion should be done). Libgit2 was using the better algorithm in both places, but that is causing some confusion. For now, this makes diff just look for NUL bytes to decide if a file is binary by content in diff.

805c476c

2013-01-11T11:20:44

Fix diff patch line number calculation This was just wrong. Added a test that verifying patch line numbers even for hunks further into a file and then fixed the algorithm. I needed to add a little extra state into the patch so that I could track old and new file numbers independently, but it should be okay.

de590550

2013-01-08T17:11:11

Resolve crash with diff against empty file It is not legal inside our `p_mmap` function to mmap a zero length file. This adds a test that exercises that case inside diff and fixes the code path where we would try to do that. The fix turns out not to be a lot of code since our default file content is already initialized to "" which works in this case. Fixes #1210

359fc2d2

2013-01-08T17:07:25

update copyrights

f2b7f7a6

2013-01-07T15:44:22

Share git_diff_blobs/git_diff_blob_to_buffer code This moves the implementation of these two APIs into common code that will be shared between the two. Also, this adds tests for the `git_diff_blob_to_buffer` API. Lastly, this adds some extra `const` to a few places that can use it.

f6234cd9

2012-12-21T20:57:43

Introduce git_diff_blob_to_buffer

c7231c45

2012-11-30T16:31:42

Deploy GITERR_CHECK_VERSION

2f8d30be

2012-11-29T15:05:04

Deploy GIT_DIFF_OPTIONS_INIT

7bf87ab6

2012-11-28T09:58:48

Consolidate text buffer functions There are many scattered functions that look into the contents of buffers to do various text manipulations (such as escaping or unescaping data, calculating text stats, guessing if content is binary, etc). This groups all those functions together into a new file and converts the code to use that. This has two enhancements to existing functionality. The old text stats function is significantly rewritten and the BOM detection code was extended (although largely we can't deal with anything other than a UTF8 BOM).

a8122b5d

2012-11-21T15:39:03

Fix warnings on Win64 build

9cd42358

2012-11-20T16:57:16

API updates for submodule.h

793c4385

2012-11-20T16:36:06

Update diff callback param order This makes the diff functions that take callbacks both take the payload parameter after the callback function pointers and pass the payload as the last argument to the callback function instead of the first. This should make them consistent with other callbacks across the API.

cfbe4be3

2012-11-17T19:54:47

More external API cleanup Conflicts: src/branch.c tests-clar/refs/branches/create.c

0f3def71

2012-11-09T11:19:46

Fix various cross-platform build issues This fixes a number of warnings and problems with cross-platform builds. Among other things, it's not safe to name a member of a structure "strcmp" because that may be #defined.

55cbd05b

2012-11-08T16:56:34

Some diff refactorings to help code reuse There are some diff functions that are useful in a rewritten checkout and this lays some groundwork for that. This contains three main things: 1. Share the function diff uses to calculate the OID for a file in the working directory (now named `git_diff__oid_for_file` 2. Add a `git_diff__paired_foreach` function to iterator over two diff lists concurrently. Convert status to use it. 3. Move all the string/prefix/index entry comparisons into function pointers inside the `git_diff_list` object so they can be switched between case sensitive and insensitive versions. This makes them easier to reuse in various functions without replicating logic. As part of this, move a couple of index functions out of diff.c and into index.c.

cb7180a6

2012-10-25T11:48:39

Add git_diff_patch_print This adds a `git_diff_patch_print()` API which is more like the existing API to "print" a patch from an entire `git_diff_list` but operates on a single `git_diff_patch` object. Also, it rewrites the `git_diff_patch_to_str()` API to use that function (making it very small).

3943dc78

2012-10-25T11:12:56

Check errors while generating diff patch string

93cf7bb8

2012-10-24T20:56:32

Add git_diff_patch_to_str API This adds an API to generate a complete single-file patch text from a git_diff_patch object.

0d64bef9

2012-10-05T15:56:57

Add complex checkout test and then fix checkout This started as a complex new test for checkout going through the "typechanges" test repository, but that revealed numerous issues with checkout, including: * complete failure with submodules * failure to create blobs with exec bits * problems when replacing a tree with a blob because the tree "example/" sorts after the blob "example" so the delete was being processed after the single file blob was created This fixes most of those problems and includes a number of other minor changes that made it easier to do that, including improving the TYPECHANGE support in diff/status, etc.

5d1308f2

2012-10-08T15:19:00

Add test for diffs with submodules and bug fixes The adds a test for the submodule diff capabilities and then fixes a few bugs with how the output is generated. It improves the accuracy of OIDs in the diff delta object and makes the submodule output more closely mirror the OIDs that will be used by core git.

dfbff793

2012-10-08T15:14:12

Fix a few diff bugs with directory content There are a few cases where diff should leave directories in the diff list if we want to match core git, such as when the directory contains a .git dir. That feature was lost when I introduced some of the new submodule handling. This restores that and then fixes a couple of related to diff output that are triggered by having diffs with directories in them. Also, this adds a new flag that can be passed to diff if you want diff output to actually include the file content of any untracked files.

1686641f

2012-10-05T13:03:22

Extract submodule logic out of diff_output.c:get_workdir_content

7e57d250

2012-09-18T23:43:23

Diff: teach get_workdir_content to show a submodule as text 1. teach diff.c:maybe_modified to query git_submodule_status for the modification state of a submodule. According to the git_submodule_status docs, it will filter for to-ignore states already. 2. teach diff_output.c:get_workdir_content to check the submodule status again and create a line like: Subproject commit <SHA-1>\n or Subproject comimt <SHA-1>-dirty\n like git.git does.

9ce44f1a

2012-09-18T22:35:09

Diff: teach get_blob_content to show a submodule as text diff_output.c:get_blob_content used to try to read the submodule commit as a blob in the superproject's odb. Of course it cannot find it and errors out with GIT_ENOTFOUND, implcitly terminating the whole diff output. This patch teaches it to create a text that describes the submodule instead. The text looks like: Subproject commit <SHA1>\n which is what git.git does, too.

1a5cd26b

2012-10-05T13:02:35

Fix minor whitespace issue

cc5bf359

2012-09-28T09:08:09

Clean up Win64 warnings

bae957b9

2012-09-25T16:31:46

Add const to all shared pointers in diff API There are a lot of places where the diff API gives the user access to internal data structures and many of these were being exposed through non-const pointers. This replaces them all with const pointers for any object that the user can access but is still owned internally to the git_diff_list or git_diff_patch objects. This will probably break some bindings... Sorry!

64286308

2012-09-25T10:48:50

Fix bugs in new diff patch code This fixes all the bugs in the new diff patch code. The only really interesting one is that when we merge two diffs, we now have to actually exclude diff delta records that are not supposed to be tracked, as opposed to before where they could be included because they would be skipped silently by `git_diff_foreach()`. Other than that, there are just minor errors.

5f69a31f

2012-09-24T20:52:34

Initial implementation of new diff patch API Replacing the `git_iterator` object, this creates a simple API for accessing the "patch" for any file pair in a diff list and then gives indexed access to the hunks in the patch and the lines in the hunk. This is the initial implementation of this revised API - it is still broken, but at least builds cleanly.

9ac8b113

2012-09-20T14:06:49

Fix MSVC amd64 compilation warnings

12b6af17

2012-09-13T14:15:07

Forgot to reset hunk & line between files The last change tweaked the way we use the hunk_curr pointer during iteration, but failed to reset the value back to NULL when switching files.

49d34c1c

2012-09-13T13:17:38

Fix problems in diff iterator record chaining There is a bug in building the linked list of line records in the diff iterator and also an off by one element error in the hunk counts. This fixes both of these, adds some test data with more complex sets of hunk and line diffs to exercise this code better.

1f35e89d

2012-09-11T12:03:33

Fix diff binary file detection In the process of adding tests for the max file size threshold (which treats files over a certain size as binary) there seem to be a number of problems in the new code with detecting binaries. This should fix those up, as well as add a test for the file size threshold stuff. Also, this un-deprecates `GIT_DIFF_LINE_ADD_EOFNL`, since I finally found a legitimate situation where it would be returned.

c6ac28fd

2012-09-10T12:24:05

Reorg internal odb read header and object lookup Often `git_odb_read_header` will "fail" and have to read the entire object into memory instead of just the header. When this happens, the object is loaded and then disposed of immediately, which makes it difficult to efficiently use the header information to decide if the object should be loaded (since attempting to do so will often result in loading the object twice). This commit takes the existing code and reorganizes it to have two new functions: - `git_odb__read_header_or_object` which acts just like the old read header function except that it returns the object, too, if it was forced to load the whole thing. It then becomes the callers responsibility to free the `git_odb_object`. - `git_object__from_odb_object` which was extracted from the old `git_object_lookup` and creates a subclass of `git_object` from an existing `git_odb_object` (separating the ODB lookup from the `git_object` creation). This allows you to use the first header reading function efficiently without instantiating the `git_odb_object` twice. There is no net change to the behavior of any of the existing functions, but this allows internal code to tap into the ODB lookup and object creation to be more efficient.

e597b189

2012-09-10T11:49:12

Move diff max_size to public API This commit adds a max_size value in the public `git_diff_options` structure so that the user can automatically flag blobs over a certain size as binary regardless of other properties. Also, and perhaps more importantly, this moves binary detection to be as early as possible in the diff traversal inner loop and makes sure that we stop loading objects as soon as we decide that they are binary.

b36effa2

2012-09-10T09:59:14

Replace git_diff_iterator_num_files with progress The `git_diff_iterator_num_files` API was problematic, since we don't actually know the exact number of files to be iterated over until we load those files into memory. This replaces it with a new `git_diff_iterator_progress` API that goes from 0 to 1, and moves and renamed the old API for the internal places that can tolerate a max value instead of an exact value.

3a3deea8

2012-09-06T15:45:50

Clean up blob diff path Previously when diffing blobs, the diff code just ran with a NULL repository object. Of course, that's not necessary and the test for a NULL repo was confusing. This makes the blob diff run with the repo that contains the blobs and clarifies the test that it is possible to be diffing data where the path is unknown.

60b9d3fc

2012-09-05T15:00:40

Implement filters for status/diff blobs This adds support to diff and status for running filters (a la crlf) on blobs in the workdir before computing SHAs and before generating text diffs. This ended up being a bit more code change than I had thought since I had to reorganize some of the diff logic to minimize peak memory use when filtering blobs in a diff. This also adds a cap on the maximum size of data that will be loaded to diff. I set it at 512Mb which should match core git. Right now it is a #define in src/diff.h but it could be moved into the public API if desired.

01ae1909

2012-09-06T10:13:38

diff: Cleanup documentation and printf compat

510f1bac

2012-08-30T16:39:05

Fix comments and a minor bug This adds better header comments and also fixes a bug in one of simple APIs that tells the number of lines in the current hunk.

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.

b97c169e

2012-09-04T10:01:18

Fix MSVC compilation warnings

5f4a61ae

2012-08-09T19:43:25

Working implementation of git_submodule_status This is a big redesign of the git_submodule_status API and the implementation of the redesigned API. It also fixes a number of bugs that I found in other parts of the submodule API while writing the tests for the status part. This also fixes a couple of bugs in the iterators that had not been noticed before - one with iterating when there is a gitlink (i.e. separate-work-dir) and one where I was treating anything even vaguely submodule-like as a submodule, more aggressively than core git does.

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.

c07d9c95

2012-08-09T15:33:04

oid: Explicitly include `oid.h` for the inlined CMP

5dca2010

2012-08-03T17:08:01

Update iterators for consistency across library This updates all the `foreach()` type functions across the library that take callbacks from the user to have a consistent behavior. The rules are: * A callback terminates the loop by returning any non-zero value * Once the callback returns non-zero, it will not be called again (i.e. the loop stops all iteration regardless of state) * If the callback returns non-zero, the parent fn returns GIT_EUSER * Although the parent returns GIT_EUSER, no error will be set in the library and `giterr_last()` will return NULL if called. This commit makes those changes across the library and adds tests for most of the iteration APIs to make sure that they follow the above rules.

29f9186d

2012-07-02T11:18:01

diff: make inter-hunk-context default value git-compliant Default in git core is 0, not 3

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`.

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.

3f035860

2012-06-07T22:43:03

misc: Fix warnings from PVS Studio trial

2ab9dcbd

2012-05-27T16:47:56

Fix checking for the presence of a flag

29e948de

2012-05-10T10:38:10

global: Change parameter ordering in API Consistency is good.

b59c73d3

2012-05-17T13:06:20

Optimize away git_text_gather_stats in diff GProf shows `git_text_gather_stats` as the most expensive call in large diffs. The function calculates a lot of information that is not actually used and does not do so in a optimal order. This introduces a tuned `git_buf_is_binary` function that executes the same algorithm in a fraction of the time.

9a29f8d5

2012-05-04T07:55:09

diff: fix the diffing of two identical blobs

28ef7f9b

2012-05-03T17:25:01

diff: make git_diff_blobs() able to detect binary blobs

245c5eae

2012-05-03T16:34:02

diff: When diffing two blobs, ensure the delta callback parameter is filled with relevant information

4f806761

2012-05-03T17:19:06

diff: fix the diffing of a concrete blob against a null one

8d0f4675

2012-05-03T16:27:22

diff: remove unused parameter

f917481e

2012-05-03T16:37:25

Support reading attributes from index Depending on the operation, we need to consider gitattributes in both the work dir and the index. This adds a parameter to all of the gitattributes related functions that allows user control of attribute reading behavior (i.e. prefer workdir, prefer index, only use index). This fix also covers allowing us to check attributes (and hence do diff and status) on bare repositories. This was a somewhat larger change that I hoped because it had to change the cache key used for gitattributes files.

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

3fd99be9

2012-03-05T09:30:17

Convert from strnlen to git_text_is_binary Since strnlen is not supported on all platforms and since we now have the shiny new git_text_is_binary in the filtering code, let's convert diff binary detection to use the new stuff.

8b2bcfbe

2012-03-05T09:14:56

Copy values to avoid strict aliasing warning To make this code more resilient to future changes, we'll explicitly translate the libgit2 structure to the libxdiff structure.

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.

1d2dd864

2012-04-29T19:42:51

diff: provide more context to the consumer of the callbacks Update the callback to provide some information related to the file change being processed and the range of the hunk, when applicable.

eb3d71a5

2012-04-25T22:23:35

diff: fix generation of the header of a removal patch

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.

7826d577

2012-03-21T10:00:54

diff_output: remove unused parameter Signed-off-by: schu <schu-github@schulog.org>

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.

cb8a7961

2012-03-07T00:02:55

error-handling: Repository This also includes droping `git_buf_lasterror` because it makes no sense in the new system. Note that in most of the places were it has been dropped, the code needs cleanup. I.e. GIT_ENOMEM is going away, so instead it should return a generic `-1` and obviously not throw anything.

5621d809

2012-03-06T17:51:04

Rename git_oid_to_string to git_oid_tostr To conform the naming scheme of git_oid_fromstr we should change the name of git_oid_to_string to git_oid_tostr.

c4c4bc1f

2012-03-05T09:30:17

Convert from strnlen to git_text_is_binary Since strnlen is not supported on all platforms and since we now have the shiny new git_text_is_binary in the filtering code, let's convert diff binary detection to use the new stuff.

28b486b2

2012-03-05T09:14:56

Copy values to avoid strict aliasing warning To make this code more resilient to future changes, we'll explicitly translate the libgit2 structure to the libxdiff structure.

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.

529df4df

2012-03-02T15:57:06

Fixes for merge of filters branch

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.

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.

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.

thodg/libgit2/src/diff_output.c

src/diff_output.c

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