include/git2/diff.h


Log

Author Commit Date CI Message
Edward Thomson dbc4ac1c 2022-01-22T23:10:03 oid: `GIT_OID_*SZ` is now `GIT_OID_SHA1_*SIZE` In preparation for SHA256 support, `GIT_OID_RAWSZ` and `GIT_OID_HEXSZ` need to indicate that they're the size of _SHA1_ OIDs.
Edward Thomson 359240b6 2022-02-11T17:56:05 diff: indicate when the file size is "valid" When we know the file size (because we're producing it from a working directory iterator, or an index with an up-to-date cache) then set a flag indicating as such. This removes the ambiguity about a 0 file size, which could indicate that a file exists and is 0 bytes, or that we haven't read it yet.
Edward Thomson 258df9c1 2022-01-17T22:03:26 Merge pull request #6168 from punkymaniac/patch-documentation-2 Improve documentation
punkymaniac 68bc511a 2021-11-26T15:14:56 Add documentation about parameter and return value
Dimitris Apostolou 90df4302 2022-01-05T12:18:05 Fix typos
Peter Pettersson 38c34498 2021-10-03T00:12:52 Make enum in includes C90 compliant by removing trailing comma.
Edward Thomson 1738f732 2021-10-13T11:36:07 diff: document updated rename limit
Edward Thomson 1ba7c327 2021-09-21T20:23:44 diff: update `GIT_DIFF_IGNORE_BLANK_LINES` `GIT_DIFF_IGNORE_BLANK_LINES` needs to be within a (signed) int, per the `enum` definition of ISO C.
Edward Thomson ba3595af 2021-09-13T16:25:00 diff: deprecate diff_format_email `git_diff_format_email` is deprecated in favor of `git_email_create`.
punkymaniac 131f0805 2021-06-16T17:45:01 Fix documentation formatting for git_diff_file
yuuri ed94f549 2021-05-01T20:26:49 diff:add option to ignore blank line changes
Marco Sirabella 96585597 2021-04-12T23:52:03 Fix diff_entrycount -> diff_num_deltas doc typo This just fixes a typo in the documentation, actual rename change was done in 5f69a31f
Patrick Steinhardt fb439c97 2019-11-28T14:41:58 Merge pull request #5306 from herrerog/patchid diff: complete support for git patchid
Edward Thomson 4334b177 2019-06-23T15:43:38 blob: use `git_object_size_t` for object size Instead of using a signed type (`off_t`) use a new `git_object_size_t` for the sizes of objects.
Gregory Herrero b921964b 2019-11-07T13:08:51 diff_print: add support for GIT_DIFF_FORMAT_PATCH_ID. Git is generating patch-id using a stripped down version of a patch where hunk header and index information are not present. Signed-off-by: Gregory Herrero <gregory.herrero@oracle.com>
Sven Strickroth 452b7f8f 2019-09-25T20:29:21 Don't use enum for flags Using an `enum` causes trouble when used with C++ as bitwise operations are not possible w/o casting (e.g., `opts.flags &= ~GIT_BLOB_FILTER_CHECK_FOR_BINARY;` is invalid as there is no `&=` operator for `enum`). Signed-off-by: Sven Strickroth <email@cs-ware.de>
Edward Thomson 0b5ba0d7 2019-06-06T16:36:23 Rename opt init functions to `options_init` In libgit2 nomenclature, when we need to verb a direct object, we name a function `git_directobject_verb`. Thus, if we need to init an options structure named `git_foo_options`, then the name of the function that does that should be `git_foo_options_init`. The previous names of `git_foo_init_options` is close - it _sounds_ as if it's initializing the options of a `foo`, but in fact `git_foo_options` is its own noun that should be respected. Deprecate the old names; they'll now call directly to the new ones.
Edward Thomson 22d2062d 2019-01-09T18:25:10 Introduce GIT_CALLBACK macro to enforce cdecl Since we now always build the library with cdecl calling conventions, our callbacks should be decorated as such so that users will not be able to provide callbacks defined with other calling conventions. The `GIT_CALLBACK` macro will inject the `__cdecl` attribute as appropriate.
Etienne Samson a4a028be 2018-08-29T22:49:35 diff: documentation mashup
Patrick Steinhardt 2d9d2464 2018-06-12T10:34:10 diff: fix enum value being out of allowed range The C89 standard states in §6.7.2.2 "Enumeration specifiers": > The expression that defines the value of an enumeration constant shall > be an integer constant expression that has a value representable as an > int. On most platforms, this effectively limits the range to a 32 bit signed integer. The enum `git_diff_option_t` though recently gained an entry `GIT_DIFF_INDENT_HEURISTIC = (1u << 31)`, which breaks this limit. Fix the issue by using a gap in `git_diff_option_t`'s enum values. While this has the benefit of retaining our API, it may break applications which do not get recompiled after upgrading libgit2. But as we are bumping the soversion on each release anyway and thus force a recompile of dependents, this is not a problem.
Etienne Samson 04c48afc 2018-04-20T21:07:17 docs: standardize struct git_*_options comments
Etienne Samson ca5a15e5 2018-03-22T23:27:27 docs: standardize comment block for git_*_init_options functions
Jacques Germishuys 5f6383ca 2018-03-08T08:17:29 diff: ensure an unsigned number is shifted
Carlos Martín Nieto 7e3faf58 2017-10-29T15:05:28 diff: expose the "indent heuristic" in the diff options We default to off, but we might want to consider changing `GIT_DIFF_NORMAL` to include it.
Alpha 2a3cfc23 2017-08-11T17:15:51 Docs: Fix inline comments for git_diff_hunk
Patrick Steinhardt 89a34828 2017-06-16T13:34:43 diff: implement function to calculate patch ID The upstream git project provides the ability to calculate a so-called patch ID. Quoting from git-patch-id(1): A "patch ID" is nothing but a sum of SHA-1 of the file diffs associated with a patch, with whitespace and line numbers ignored." Patch IDs can be used to identify two patches which are probably the same thing, e.g. when a patch has been cherry-picked to another branch. This commit implements a new function `git_diff_patchid`, which gets a patch and derives an OID from the diff. Note the different terminology here: a patch in libgit2 are the differences in a single file and a diff can contain multiple patches for different files. The implementation matches the upstream implementation and should derive the same OID for the same diff. In fact, some code has been directly derived from the upstream implementation. The upstream implementation has two different modes to calculate patch IDs, which is the stable and unstable mode. The old way of calculating the patch IDs was unstable in a sense that a different ordering the diffs was leading to different results. This oversight was fixed in git 1.9, but as git tries hard to never break existing workflows, the old and unstable way is still default. The newer and stable way does not care for ordering of the diff hunks, and in fact it is the mode that should probably be used today. So right now, we only implement the stable way of generating the patch ID.
Edward Thomson adedac5a 2016-09-02T02:03:45 diff: treat binary patches with no data special When creating and printing diffs, deal with binary deltas that have binary data specially, versus diffs that have a binary file but lack the actual binary data.
Edward Thomson e2e7f31a 2016-08-05T20:00:22 diff: document `git_diff_from_buffer`
Edward Thomson 002c8e29 2016-08-03T17:09:41 git_diff_file: move `id_abbrev` Move `id_abbrev` to a more reasonable place where it packs more nicely (before anybody starts using it).
Edward Thomson 72827490 2016-04-25T12:40:19 Introduce `git_diff_to_buf` Like `git_patch_to_buf`, provide a simple helper method that can print an entire diff directory to a `git_buf`.
Edward Thomson 7166bb16 2016-04-25T00:35:48 introduce `git_diff_from_buffer` to parse diffs Parse diff files into a `git_diff` structure.
Edward Thomson d68cb736 2015-09-22T18:25:03 diff: include oid length in deltas Now that `git_diff_delta` data can be produced by reading patch file data, which may have an abbreviated oid, allow consumers to know that the id is abbreviated.
Edward Thomson d34f6826 2014-04-08T17:18:47 Patch parsing from patch files
Ephemera 804bcd6b 2016-02-05T01:59:07 Fix typo
Patrick Steinhardt 254e0a33 2015-11-24T13:43:43 diff: include commit message when formatting patch When formatting a patch as email we do not include the commit's message in the formatted patch output. Implement this and add a test that verifies behavior.
Jason Haslam 3138ad93 2015-07-16T10:17:16 Add diff progress callback.
Edward Thomson 53c2296b 2015-08-31T19:41:43 iterator: better document GIT_DIFF_DISABLE_PATHSPEC_MATCH
Edward Thomson 56ed415a 2015-08-30T19:10:00 diff: drop `FILELIST_MATCH` Now that non-pathspec matching diffs are implemented at the iterator level, drop `FILELIST_MATCH`ing.
Edward Thomson 3273ab3f 2015-08-28T20:06:18 diff: better document GIT_DIFF_PATHSPEC_DISABLE Document that `GIT_DIFF_PATHSPEC_DISABLE` is not necessarily about explicit path matching, but also includes matching of directory names. Enforce this in a test.
Edward Thomson ef206124 2015-07-28T19:55:37 Move filelist into the iterator handling itself.
Pierre-Olivier Latour ccef5adb 2015-06-30T09:30:20 Added git_diff_index_to_index()
Carlos Martín Nieto c2418f46 2015-06-25T12:48:44 Rename FALLBACK to UNSPECIFIED Fallback describes the mechanism, while unspecified explains what the user is thinking.
Carlos Martín Nieto c6f489c9 2015-05-04T17:29:12 submodule: add an ignore option to status This lets us specify in the status call which ignore rules we want to use (optionally falling back to whatever the submodule has in its configuration). This removes one of the reasons for having `_set_ignore()` set the value in-memory. We re-use the `IGNORE_RESET` value for this as it is no longer relevant but has a similar purpose to `IGNORE_FALLBACK`. Similarly, we remove `IGNORE_DEFAULT` which does not have use outside of initializers and move that to fall back to the configuration as well.
Edward Thomson 8147b1af 2015-05-25T20:03:59 diff: introduce binary diff callbacks Introduce a new binary diff callback to provide the actual binary delta contents to callers. Create this data from the diff contents (instead of directly from the ODB) to support binary diffs including the workdir, not just things coming out of the ODB.
Edward Thomson 10549a2d 2015-05-19T18:26:04 Introduce `GIT_DIFF_FLAG_EXISTS` Mark the `old_file` and `new_file` sides of a delta with a new bit, `GIT_DIFF_FLAG_EXISTS`, that introduces that a particular side of the delta exists in the diff. This is useful for indicating whether a working directory item exists or not, in the presence of a conflict. Diff users may have previously used DELETED to determine this information.
Edward Thomson 7c948014 2015-05-14T14:00:29 diff/status: introduce conflicts When diffing against an index, return a new `GIT_DELTA_CONFLICTED` delta type for items that are conflicted. For a single file path, only one delta will be produced (despite the fact that there are multiple entries in the index). Index iterators now have the (optional) ability to return conflicts in the index. Prior to this change, they would be omitted, and callers (like diff) would omit conflicted index entries entirely.
Edward Thomson 4beab1f8 2015-03-31T16:29:35 checkout: break case-changes into delete/add When checking out with a case-insensitive working directory, we want to change the case of items in the working directory to reflect changes that occured in the checkout target. Diff now has an option to break case-changing renames into delete/add.
Edward Thomson 3538f8f1 2015-02-03T13:41:35 diff docs: update `git_diff_delta` description
Pierre-Olivier Latour d88766c4 2014-10-26T10:40:46 Changed context_lines and interhunk_lines to uint32_t to match struct s_xdemitconf
Carlos Martín Nieto 12e18031 2014-10-17T22:22:59 Update some documentation
Ciro Santilli 06280457 2014-09-18T11:53:24 Join typedef and struct definitions in single file.
Alan Rogers 35b1471f 2014-07-22T11:15:33 Move the UNREADABLE enums to the correct group.
Alan Rogers dc49e1b5 2014-06-04T15:36:28 Merge remote-tracking branch 'origin/development' into fix-git-status-list-new-unreadable-folder Conflicts: include/git2/diff.h
Alan Rogers 7b491a7d 2014-06-03T17:50:00 GIT_DIFF_INCLUDE_UNREADABLE_AS_UNTRACKED
Carlos Martín Nieto 11e2665e 2014-06-02T18:53:32 Formatting fixes for the docs These are some issues I found while playing around with the new parser for docurium.
Alan Rogers 61bef72d 2014-05-20T23:57:40 Start adding GIT_DELTA_UNREADABLE and GIT_STATUS_WT_UNREADABLE.
Russell Belfer 7a2e56a3 2014-04-29T14:30:15 Get rid of redundant git_diff_options_init fn Since git_diff_init_options was introduced, remove this old fn.
Russell Belfer 702efc89 2014-04-30T10:57:42 Make init_options fns use unsigned ints and macro Use an unsigned int for the version and add a helper macro so the code is simplified (and so the error message is a common string).
Russell Belfer 9c8ed499 2014-04-29T15:05:58 Remove trace / add git_diff_perfdata struct + api
Russell Belfer 94fb4aad 2014-04-28T14:48:41 Add diff option to update index stat cache When diff is scanning the working directory, if it finds a file where it is not sure if the index entry matches the working dir, it will recalculate the OID (which is pretty expensive). This adds a new flag to diff so that if the OID calculation finds that the file actually has not changed (i.e. just the modified time was altered or such), then it will refresh the stat cache in the index so that future calls to diff will not have to check the oid again.
Vicent Marti 212b6205 2014-04-23T09:27:15 Merge pull request #2291 from ethomson/patch_binary patch: emit deflated binary patches (optionally)
Edward Thomson e349ed50 2014-04-22T14:58:33 patch: emit binary patches (optionally)
Russell Belfer 8d09efa2 2014-04-22T12:33:27 Use git_diff_get_stats in example/diff + refactor This takes the `--stat` and related example options in the example diff.c program and converts them to use the `git_diff_get_stats` API which nicely formats stats for you. I went to add bar-graph scaling to the stats formatter and noticed that the `git_diff_stats` structure was holding on to all of the `git_patch` objects. Unfortunately, each of these objects keeps the full text of the diff in memory, so this is very expensive. I ended up modifying `git_diff_stats` to keep just the data that it needs to keep and allowed it to release the patches. Then, I added width scaling to the output on top of that. In making the diff example program match 'git diff' output, I ended up removing an newline from the sumamry output which I then had to compensate for in the email formatting to match the expectations. Lastly, I went through and refactored the tests to use a couple of helper functions and reduce the overall amount of code there.
Russell Belfer 12e422a0 2014-04-21T16:08:05 Some doc and examples/diff.c changes I was playing with "git diff-index" and wanted to be able to emulate that behavior a little more closely with the diff example. Also, I wanted to play with running `git_diff_tree_to_workdir` directly even though core Git doesn't exactly have the equivalent, so I added a command line option for that and tweaked some other things in the example code. This changes a minor output thing in that the "raw" print helper function will no longer add ellipses (...) if the OID is not actually abbreviated.
Jacques Germishuys d8cc1fb6 2014-04-11T19:15:15 Introduce git_diff_format_email and git_diff_commit_as_email
Jacques Germishuys 360314c9 2014-04-11T19:03:29 Introduce git_diff_get_stats, git_diff_stats_files_changed, git_diff_stats_insertions, git_diff_stats_deletions and git_diff_stats_to_buf
Matthew Bowen b9f81997 2014-03-05T21:49:23 Added function-based initializers for every options struct. The basic structure of each function is courtesy of arrbee.
Russell Belfer 6789b7a7 2014-02-27T14:13:22 Add buffer to buffer diff and patch APIs This adds `git_diff_buffers` and `git_patch_from_buffers`. This also includes a bunch of internal refactoring to increase the shared code between these functions and the blob-to-blob and blob-to-buffer APIs, as well as some higher level assert helpers in the tests to also remove redundancy.
Carlos Martín Nieto 86bfc3e1 2014-01-24T20:30:10 diff: change id abbrev option's name to id_abbrev Same as the other commits in the series, we use 'id' when talking about thing rather than the datatype.
Carlos Martín Nieto 9950bb4e 2014-01-24T20:23:17 diff: rename the file's 'oid' to 'id' In the same vein as the previous commits in this series.
Russell Belfer 373cf6a9 2013-12-09T10:17:47 Update docs for new callback return value behavior
Russell Belfer 9f77b3f6 2013-11-25T14:21:34 Add config read fns with controlled error behavior This adds `git_config__lookup_entry` which will look up a key in a config and return either the entry or NULL if the key was not present. Optionally, it can either suppress all errors or can return them (although not finding the key is not an error for this function). Unlike other accessors, this does not normalize the config key string, so it must only be used when the key is known to be in normalized form (i.e. all lower-case before the first dot and after the last dot, with no invalid characters). This also adds three high-level helper functions to look up config values with no errors and a fallback value. The three functions are for string, bool, and int values, and will resort to the fallback value for any error that arises. They are: * `git_config__get_string_force` * `git_config__get_bool_force` * `git_config__get_int_force` None of them normalize the config `key` either, so they can only be used for internal cases where the key is known to be in normal format.
Ben Straub a7c83aec 2013-12-06T13:39:08 Clarify docs
Ben Straub 710f3838 2013-12-06T09:32:09 Clarify default value and behavior
Ben Straub a6ebc2bd 2013-12-04T15:17:39 Introduce GIT_DIFF_FIND_BY_CONFIG
Russell Belfer f62c174d 2013-12-02T13:49:58 GIT_DIFF_FIND_REMOVE_UNMODIFIED sounds better
Russell Belfer 97ad85b8 2013-12-02T13:30:05 Add GIT_DIFF_FIND_DELETE_UNMODIFIED flag When doing copy detection, it is often necessary to include UNMODIFIED records in the git_diff so they are available as source records for GIT_DIFF_FIND_COPIES_FROM_UNMODIFIED. Yet in the final diff, often you will not want to have these UNMODIFIED records. This adds a flag which marks these UNMODIFIED records for deletion from the diff list so they will be removed after the rename detect phase is over.
Nick Hengeveld d8e7ffc2 2013-11-18T14:03:25 Add content offset to git_diff_line For additions and deletions, external consumers like subversion can make use of the content offset to generate diffs in their proprietary formats.
Russell Belfer a5c16f3c 2013-11-01T10:18:03 Add git_diff_options_init helper Sometimes the static initializer for git_diff_options cannot be used and since setting them to all zeroes doesn't actually work quite right, this adds a new helper for that situation. This also adds an explicit new value to the submodule settings options to be used when those enums need static initialization.
Russell Belfer 4bf630b6 2013-10-31T14:36:52 Make diff and status perform soft index reload This changes `git_index_read` to have two modes - a hard index reload that always resets the index to match the on-disk data (which was the old behavior) and a soft index reload that uses the timestamp / file size information and only replaces the index data if the file on disk has been modified. This then updates the git_status code to do a soft reload unless the new GIT_STATUS_OPT_NO_REFRESH flag is passed in. This also changes the behavior of the git_diff functions that use the index so that when an index is not explicitly passed in (i.e. when the functions call git_repository_index for you), they will also do a soft reload for you. This intentionally breaks the file signature of git_index_read because there has been some confusion about the behavior previously and it seems like all existing uses of the API should probably be examined to select the desired behavior.
Russell Belfer 7ce60099 2013-10-22T11:12:44 Fix typo
Russell Belfer 5de4ec81 2013-10-21T15:36:38 Implement patience and minimal diff flags It seems that to implement these options, we just have to pass the appropriate flags through to the libxdiff code taken from core git. So let's do it (and add a test).
Russell Belfer 3b5f7954 2013-10-21T13:42:42 Create git_diff_line and extend git_diff_hunk Instead of having functions with so very many parameters to pass hunk and line data, this takes the existing git_diff_hunk struct and extends it with more hunk data, plus adds a git_diff_line. Those structs are used to pass back hunk and line data instead of the old APIs that took tons of parameters. Some work that was previously only being done for git_diff_patch creation (scanning the diff content for exact line counts) is now done for all callbacks, but the performance difference should not be noticable.
Russell Belfer 74a627f0 2013-10-21T09:07:19 Tweak to git_diff_delta structure for nfiles While the base git_diff_delta structure always contains two files, when we introduce conflict data, it will be helpful to have an indicator when an additional file is involved.
Russell Belfer 10672e3e 2013-10-15T15:10:07 Diff API cleanup This lays groundwork for separating formatting options from diff creation options. This groups the formatting flags separately from the diff list creation flags and reorders the options. This also tweaks some APIs to further separate code that uses patches from code that just looks at git_diffs.
Russell Belfer 3ff1d123 2013-10-11T14:51:54 Rename diff objects and split patch.h This makes no functional change to diff but renames a couple of the objects and splits the new git_patch (formerly git_diff_patch) into a new header file.
Edward Thomson 17c7fbf6 2013-08-21T14:07:53 Split rewrites, status doesn't return rewrites Ensure that we apply splits to rewrites, even if we're not interested in examining it closely for rename/copy detection. In keeping with core git, status should not display rewrites, it should simply show files as "modified".
Russell Belfer eb1c1707 2013-07-23T15:45:58 Restore GIT_DIFF_LINE_BINARY usage This restores the usage of GIT_DIFF_LINE_BINARY for the diff output line that reads "Binary files x and y differ" so that it can be optionally colorized independently of the file header.
Russell Belfer 197b8966 2013-07-23T14:34:31 Add hunk/file headers to git_diff_patch_size This allows git_diff_patch_size to account for hunk headers and file headers in the returned size. This required some refactoring of the code that is used to print file headers so that it could be invoked by the git_diff_patch_size API. Also this increases the test coverage and fixes an off-by-one bug in the size calculation when newline changes happen at the end of the file.
Russell Belfer b4a4cf24 2013-07-22T16:07:56 Add git_diff_patch_size() API This adds a new API to get the size in bytes of the diffs in a git_diff_patch object.
Russell Belfer f9775a37 2013-06-29T23:22:31 Add ignore_submodules to diff options This adds correct support for an equivalent to --ignore-submodules in diff, where an actual ignore value can be passed to diff to override the per submodule settings in the configuration. This required tweaking the constants for ignore values so that zero would not be used and could represent an unset option to the diff. This was an opportunity to move the submodule values into include/git2/types.h and to rename the poorly named DEFAULT values for ignore and update constants to RESET instead. Now the GIT_DIFF_IGNORE_SUBMODULES flag is exactly the same as setting the ignore_submodules option to GIT_SUBMODULE_IGNORE_ALL (which is actually a minor change from the old behavior in that submodules will now be treated as UNMODIFIED deltas instead of being left out totally - if you set GIT_DIFF_INCLUDE_UNMODIFIED). This includes tests for the various new settings.
Russell Belfer 2b672d5b 2013-07-08T22:46:36 Add git_pathspec_match_diff API This adds an additional pathspec API that will match a pathspec against a diff object. This is convenient if you want to handle renames (so you need the whole diff and can't use the pathspec constraint built into the diff API) but still want to tell if the diff had any files that matched the pathspec. When the pathspec is matched against a diff, instead of keeping a list of filenames that matched, instead the API keeps the list of git_diff_deltas that matched and they can be retrieved via a new API git_pathspec_match_list_diff_entry. There are a couple of other minor API extensions here that were mostly for the sake of convenience and to reduce dependencies on knowing the internal data structure between files inside the library.
Andreas Linde e1967164 2013-06-24T15:33:41 Fixed most documentation header bugs Fixed a few header @param and @return typos with the help of -Wdocumentation in Xcode. The following warnings have not been fixed: common.h:213 - Not sure how the documentation format is for '...' notes.h:102 - Correct @param name but empty text notes.h:111 - Correct @param name but empty text pack.h:140 - @return missing text pack.h:148 - @return missing text
Russell Belfer 74ded024 2013-06-17T17:03:34 Add "as_path" parameters to blob and buffer diffs This adds parameters to the four functions that allow for blob-to- blob and blob-to-buffer differencing (either via callbacks or by making a git_diff_patch object). These parameters let you say that filename we should pretend the blob has while doing the diff. If you pass NULL, there should be no change from the existing behavior, which is to skip using attributes for file type checks and just look at content. With the parameters, you can plug into the new diff driver functionality and get binary or non-binary behavior, plus function context regular expressions, etc. This commit also fixes things so that the git_diff_delta that is generated by these functions will actually be populated with the data that we know about the blobs (or buffers) so you can use it appropriately. It also fixes a bug in generating patches from the git_diff_patch objects created via these functions. Lastly, there is one other behavior change that may matter. If there is no difference between the two blobs, these functions no longer generate any diff callbacks / patches unless you have passed in GIT_DIFF_INCLUDE_UNMODIFIED. This is pretty natural, but could potentially change the behavior of existing usage.
Russell Belfer f9c824c5 2013-06-12T11:55:27 Add patch from blobs API This adds two new public APIs: git_diff_patch_from_blobs and git_diff_patch_from_blob_and_buffer, plus it refactors the code for git_diff_blobs and git_diff_blob_to_buffer so that they code is almost entirely shared between these APIs, and adds tests for the new APIs.
Russell Belfer 5dc98298 2013-06-11T11:22:22 Implement regex pattern diff driver This implements the loading of regular expression pattern lists for diff drivers that search for function context in that way. This also changes the way that diff drivers update options and interface with xdiff APIs to make them a little more flexible.
Russell Belfer d20b0449 2013-05-24T10:37:40 Clarify GIT_DIFF_INCLUDE_UNTRACKED_CONTENT option This improves the docs for GIT_DIFF_INCLUDE_UNTRACKED_CONTENT as well as the other flags related to UNTRACKED items in diff, plus it makes that flag now automatically turn on GIT_DIFF_INCLUDE_UNTRACKED which seems like a reasonable dwim type of change.
Russell Belfer 67db583d 2013-05-23T15:06:07 More diff rename tests; better split swap handling This adds a couple more tests of different rename scenarios. Also, this fixes a problem with the case where you have two "split" deltas and the left half of one matches the right half of the other. That case was already being handled, but in the wrong order in a way that could result in bad output. Also, if the swap also happened to put the other two halves into the correct place (i.e. two files exchanged places with each other), then the second delta was left with the SPLIT flag set when it really should be cleared.
Russell Belfer a21cbb12 2013-05-22T10:37:12 Significant rename detection rewrite This flips rename detection around so instead of creating a forward mapping from deltas to possible rename targets, instead it creates a reverse mapping, looking at possible targets and trying to find a source that they could have been renamed or copied from. This is important because each output can only have a single source, but a given source could map to multiple outputs (in the form of COPIED records). Additionally, this makes a couple of tweaks to the public rename detection APIs, mostly renaming a couple of options that control the behavior to make more sense and to be more like core Git. I walked through the tests looking at the exact results and updated the expectations based on what I saw. The new code is different from the old because it cannot give some nonsense results (like A was renamed to both B and C) which were part of the outputs previously.
Russell Belfer 9be5be47 2013-05-20T13:37:21 More git_diff_find_similar improvements - Add new GIT_DIFF_FIND_EXACT_MATCH_ONLY flag to do similarity matching without using the similarity metric (i.e. only compare the SHA). - Clean up the similarity measurement code to more rigorously distinguish between files that are not similar and files that are not comparable (previously, a 0 could either mean that the files could not be compared or that they were totally different) - When splitting a MODIFIED file into a DELETE/ADD pair, actually make a DELETED/UNTRACKED pair if the right side of the diff is from the working directory. This prevents an odd mix of ADDED and UNTRACKED files on workdir diffs.