src/diff_output.c


Log

Author Commit Date CI Message
Russell Belfer 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.
Russell Belfer 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.
Russell Belfer 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.
Russell Belfer 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.
Russell Belfer 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.
Russell Belfer 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.
Vicent Marti 01ae1909 2012-09-06T10:13:38 diff: Cleanup documentation and printf compat
Russell Belfer 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.
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.
nulltoken b97c169e 2012-09-04T10:01:18 Fix MSVC compilation warnings
Russell Belfer 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.
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
Russell Belfer 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.
yorah 29f9186d 2012-07-02T11:18:01 diff: make inter-hunk-context default value git-compliant Default in git core is 0, not 3
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.
Vicent Martí 3f035860 2012-06-07T22:43:03 misc: Fix warnings from PVS Studio trial
Garrett Regier 2ab9dcbd 2012-05-27T16:47:56 Fix checking for the presence of a flag
Vicent Martí 29e948de 2012-05-10T10:38:10 global: Change parameter ordering in API Consistency is good.
Russell Belfer 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.
nulltoken 9a29f8d5 2012-05-04T07:55:09 diff: fix the diffing of two identical blobs
nulltoken 28ef7f9b 2012-05-03T17:25:01 diff: make git_diff_blobs() able to detect binary blobs
nulltoken 4f806761 2012-05-03T17:19:06 diff: fix the diffing of a concrete blob against a null one
nulltoken 245c5eae 2012-05-03T16:34:02 diff: When diffing two blobs, ensure the delta callback parameter is filled with relevant information
nulltoken 8d0f4675 2012-05-03T16:27:22 diff: remove unused parameter
Russell Belfer 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.
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 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.
Russell Belfer 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.
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.
nulltoken 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.
nulltoken eb3d71a5 2012-04-25T22:23:35 diff: fix generation of the header of a removal patch
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.
schu 7826d577 2012-03-21T10:00:54 diff_output: remove unused parameter Signed-off-by: schu <schu-github@schulog.org>
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.
Vicent Martí 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.
Authmillenon 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.
Russell Belfer 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.
Russell Belfer 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.
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 529df4df 2012-03-02T15:57:06 Fixes for merge of filters branch
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 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 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.