src/diff.c


Log

Author Commit Date CI Message
Jacques Germishuys 0beb7fe4 2014-12-24T11:44:17 Added missing error handling path
Carlos Martín Nieto f7fcb18f 2014-11-23T14:12:54 Plug leaks Valgrind is now clean except for libssl and libgcrypt.
Carlos Martín Nieto 62a617dc 2014-11-06T16:16:46 iterator: submodules are determined by an index or tree We cannot know from looking at .gitmodules whether a directory is a submodule or not. We need the index or tree we are comparing against to tell us. Otherwise we have to assume the entry in .gitmodules is stale or otherwise invalid. Thus we pass the index of the repository into the workdir iterator, even if we do not want to compare against it. This follows what git does, which even for `git diff <tree>`, it will consider staged submodules as such.
Pierre-Olivier Latour d88766c4 2014-10-26T10:40:46 Changed context_lines and interhunk_lines to uint32_t to match struct s_xdemitconf
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 5e654200 2014-06-04T11:53:44 Implement GIT_DIFF_INCLUDE_UNREADABLE_AS_UNTRACKED
Alan Rogers c4366096 2014-05-23T00:28:12 Don't need to duplicate this code.
Alan Rogers e8cc3032 2014-05-22T19:43:58 Return GIT_DELTA_UNREADABLE for a file with a mode change
Alan Rogers 9067d5af 2014-05-21T23:13:24 Remove errant whitespace.
Alan Rogers 86c9d3da 2014-05-21T22:54:34 Return GIT_FILEMODE_UNREADABLE for files that fail to stat.
Alan Rogers 61bef72d 2014-05-20T23:57:40 Start adding GIT_DELTA_UNREADABLE and GIT_STATUS_WT_UNREADABLE.
Alan Rogers f47bc8ff 2014-05-20T18:16:04 Skip unreadable files for now.
Russell Belfer 2b52a0bf 2014-05-13T16:32:27 Increase use of config snapshots And decrease extra reload checks of config data.
Vicent Marti 03fcef18 2014-05-13T12:40:13 Merge pull request #2328 from libgit2/rb/how-broken-can-ignores-be Improve checks for ignore containment
Russell Belfer 5269008c 2014-05-06T16:01:49 Add filter options and ALLOW_UNSAFE Diff and status do not want core.safecrlf to actually raise an error regardless of the setting, so this extends the filter API with an additional options flags parameter and adds a flag so that filters can be applied with GIT_FILTER_OPT_ALLOW_UNSAFE, indicating that unsafe filter application should be downgraded from a failure to a warning.
Russell Belfer f554611a 2014-05-06T12:41:26 Improve checks for ignore containment The diff code was using an "ignored_prefix" directory to track if a parent directory was ignored that contained untracked files alongside tracked files. Unfortunately, when negative ignore rules were used for directories inside ignored parents, the wrong rules were applied to untracked files inside the negatively ignored child directories. This commit moves the logic for ignore containment into the workdir iterator (which is a better place for it), so the ignored-ness of a directory is contained in the frame stack during traversal. This allows a child directory to override with a negative ignore and yet still restore the ignored state of the parent when we traverse out of the child. Along with this, there are some problems with "directory only" ignore rules on container directories. Given "a/*" and "!a/b/c/" (where the second rule is a directory rule but the first rule is just a generic prefix rule), then the directory only constraint was having "a/b/c/d/file" match the first rule and not the second. This was fixed by having ignore directory-only rules test a rule against the prefix of a file with LEADINGDIR enabled. Lastly, spot checks for ignores using `git_ignore_path_is_ignored` were tested from the top directory down to the bottom to deal with the containment problem, but this is wrong. We have to test bottom to top so that negative subdirectory rules will be checked before parent ignore rules. This does change the behavior of some existing tests, but it seems only to bring us more in line with core Git, so I think those changes are acceptable.
Russell Belfer bc91347b 2014-04-30T11:16:31 Fix remaining init_options inconsistencies There were a couple of "init_opts()" functions a few more cases of structure initialization that I somehow missed.
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 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 b23b112d 2014-04-29T11:29:49 Add payloads, bitmaps to trace API This is a proposed adjustment to the trace APIs. This makes the trace levels into a bitmask so that they can be selectively enabled and adds a callback-level payload, plus a message-level payload. This makes it easier for me to a GIT_TRACE_PERF callbacks that are simply bypassed if the PERF level is not set.
Russell Belfer cd424ad5 2014-04-28T16:39:53 Add GIT_STATUS_OPT_UPDATE_INDEX and use trace API This adds an option to refresh the stat cache while generating status. It also rips out the GIT_PERF stuff I had an makes use of the trace API to keep statistics about what happens during diff.
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.
Russell Belfer 0fc8e1f6 2014-04-28T14:34:55 Lay groundwork for updating stat cache in diff This reorganized the diff OID calculation to make it easier to correctly update the stat cache during a diff once the flags to do so are enabled. This includes marking the path of a git_index_entry as const so we can make a "fake" git_index_entry with a "const char *" path and not get warnings. I was a little surprised at how unobtrusive this change was, but I think it's probably a good thing.
Russell Belfer 8ef4e11a 2014-04-28T14:16:26 Skip diff oid calc when size definitely changed When we think the stat cache in the index seems valid and the size or mode of a file has definitely changed, then don't bother trying to recalculate the OID of the workdir bits to confirm that it is modified - just accept that it is modified. This can result in files that show as modified with no actual diff, but the behavior actually appears to match Git on the command line. This also includes a minor optimization to not perform a submodule lookup on the ".git" directory itself.
Russell Belfer 240f4af3 2014-04-28T14:04:29 Add build option for diff internal statistics
Vicent Marti 2ad51b81 2014-04-25T02:04:12 Merge pull request #2241 from libgit2/rb/stash-skip-submodules Improve stash and checkout for ignored + untracked items
Russell Belfer 219c89d1 2014-04-23T16:28:45 Treat ignored, empty, and untracked dirs different In the iterator, distinguish between ignores and empty directories so that diff and status can ignore empty directories, but checkout and stash can treat them as untracked items.
Russell Belfer 37da3685 2014-04-22T21:51:54 Make checkout match diff for untracked/ignored dir When diff finds an untracked directory, it emulates Git behavior by looking inside the directory to see if there are any untracked items inside it. If there are only ignored items inside the dir, then diff considers it ignored, even if there is no direct ignore rule for it. Checkout was not copying this behavior - when it found an untracked directory, it just treated it as untracked. Unfortunately, when combined with GIT_CHECKOUT_REMOVE_UNTRACKED, this made is seem that checkout (and stash, which uses checkout) was removing ignored items when you had only asked it to remove untracked ones. This commit moves the logic for advancing past an untracked dir while scanning for non-ignored items into an iterator helper fn, and uses that for both diff and checkout.
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 3b4c401a 2014-02-10T13:20:08 Decouple index iterator sort from index This makes the index iterator honor the GIT_ITERATOR_IGNORE_CASE and GIT_ITERATOR_DONT_IGNORE_CASE flags without modifying the index data itself. To take advantage of this, I had to export a number of the internal index entry comparison functions. I also wrote some new tests to exercise the capability.
Jacques Germishuys a56b418d 2014-04-11T22:57:15 Sanitize git_diff_format_email_options' summary parameter It will form part of the subject line and should thus be one line.
Jacques Germishuys d8cc1fb6 2014-04-11T19:15:15 Introduce git_diff_format_email and git_diff_commit_as_email
Russell Belfer eb7e17cc 2014-04-08T14:47:20 Update submodules with parent-tracked content This updates how libgit2 treats submodule-like directories that actually have tracked content inside of them. This is a strange corner case, but it seems that many people have abortive submodule setups and then just went ahead and added the files into the parent repository. In this case, we should just treat the submodule as if it was a normal directory. Libgit2 will still try to skip over real submodules and contained repositories that do not have tracked files inside them, but this adds some new handling for cases where the apparently submodule data is in conflict with the actual list of tracked files.
Russell Belfer ea1ca3c9 2014-04-01T21:30:52 Fix skipping content of contained repos When doing a diff for use in status, we should never show the content of a git repository contained inside another one. The logic to do this was looking for a .git directory and so when a gitlink plain .git file was used, it was failing to exclude the directory content.
Russell Belfer a15c7802 2014-03-25T09:14:48 Make submodules externally refcounted `git_submodule` objects were already refcounted internally in case the submodule name was different from the path at which it was stored. This makes that refcounting externally used as well, so `git_submodule_lookup` and `git_submodule_add_setup` return an object that requires a `git_submodule_free` when done.
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.
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.
Carlos Martín Nieto d541170c 2014-01-24T11:36:41 index: rename an entry's id to 'id' This was not converted when we converted the rest, so do it now.
Russell Belfer 9cfce273 2013-12-12T12:11:38 Cleanups, renames, and leak fixes This renames git_vector_free_all to the better git_vector_free_deep and also contains a couple of memory leak fixes based on valgrind checks. The fixes are specifically: failure to free global dir path variables when not compiled with threading on and failure to free filters from the filter registry that had not be initialized fully.
Russell Belfer 26c1cb91 2013-12-09T09:44:03 One more rename/cleanup for callback err functions
Russell Belfer c7b3e1b3 2013-12-06T15:42:20 Some callback error check style cleanups I find this easier to read...
Russell Belfer 25e0b157 2013-12-06T15:07:57 Remove converting user error to GIT_EUSER This changes the behavior of callbacks so that the callback error code is not converted into GIT_EUSER and instead we propagate the return value through to the caller. Instead of using the giterr_capture and giterr_restore functions, we now rely on all functions to pass back the return value from a callback. To avoid having a return value with no error message, the user can call the public giterr_set_str or some such function to set an error message. There is a new helper 'giterr_set_callback' that functions can invoke after making a callback which ensures that some error message was set in case the callback did not set one. In places where the sign of the callback return value is meaningful (e.g. positive to skip, negative to abort), only the negative values are returned back to the caller, obviously, since the other values allow for continuing the loop. The hardest parts of this were in the checkout code where positive return values were overloaded as meaningful values for checkout. I fixed this by adding an output parameter to many of the internal checkout functions and removing the overload. This added some code, but it is probably a better implementation. There is some funkiness in the network code where user provided callbacks could be returning a positive or a negative value and we want to rely on that to cancel the loop. There are still a couple places where an user error might get turned into GIT_EUSER there, I think, though none exercised by the tests.
Russell Belfer fcd324c6 2013-12-06T15:04:31 Add git_vector_free_all There are a lot of places that we call git__free on each item in a vector and then call git_vector_free on the vector itself. This just wraps that up into one convenient helper function.
Russell Belfer 96869a4e 2013-12-03T16:45:39 Improve GIT_EUSER handling This adds giterr_user_cancel to return GIT_EUSER and clear any error message that is sitting around. As a result of using that in places, we need to be more thorough with capturing errors that happen inside a callback when used internally. To help with that, this also adds giterr_capture and giterr_restore so that when we internally use a foreach-type function that clears errors and converts them to GIT_EUSER, it is easier to restore not just the return value, but the actual error message text.
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.
Russell Belfer 3e57069e 2013-11-01T13:49:43 Fix --assume-unchanged support This was never really working right because we were checking the wrong flag and not checking it in all the places that we need to be checking it. I finally got around to writing a test and adding actual support for it.
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 8e5a8ef8 2013-11-01T09:51:01 Convert git_index_read to have a "force" flag This is a little more intuitive than the turned-around option that I originally wrote.
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 3940310e 2013-10-30T13:56:42 Fix some of the glaring errors in GIT_DIFF_REVERSE These changes fix the basic problem with GIT_DIFF_REVERSE being broken for text diffs. The reversed diff entries were getting added to the git_diff correctly, but some of the metadata was kept incorrectly in a way that prevented the text diffs from being generated correctly. Once I fixed that, it became clear that it was not possible to merge reversed diffs correctly. This has a first pass at fixing that problem. We probably need more tests to make sure that is really fixed thoroughly.
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.
Vicent Martí 92d19d16 2013-09-21T09:34:03 Merge pull request #1840 from linquize/warning Fix warning
Linquize 66566516 2013-09-08T17:15:42 Fix warning
Russell Belfer 4b11f25a 2013-09-11T16:38:33 Add ident filter This adds the ident filter (that knows how to replace $Id$) and tweaks the filter APIs and code so that git_filter_source objects actually have the updated OID of the object being filtered when it is a known value.
Russell Belfer 85d54812 2013-08-28T16:44:04 Create public filter object and use it This creates include/sys/filter.h with a basic definition of a git_filter and then converts the internal code to use it. There are related internal objects (git_filter_list) that we will want to publish at some point, but this is a first step.
Edward Thomson e38f0d69 2013-08-05T14:06:41 Add rename from rewrites to status In git_diff_paired_foreach, temporarily resort the index->workdir diff list by index path so that we can track a rename in the workdir from head->index->workdir.
Russell Belfer 125655fe 2013-07-02T16:49:57 Untracked directories with .git should be ignored This restores a behavior that was accidentally lost during some diff refactoring where an untracked directory that contains a .git item should be treated as IGNORED, not as UNTRACKED. The submodule code already detects this, but the diff code was not handling the scenario right. This also updates a number of existing tests that were actually exercising the behavior but did not have the right expectations in place. It actually makes the new `test_diff_submodules__diff_ignore_options` test feel much better because the "not-a-submodule" entries are now ignored instead of showing up as untracked items. Fixes #1697
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 2e3e273e 2013-06-29T13:20:45 Update diff to new internal submodule status API Submodules now expose an internal status API that allows diff to get back the OID values from the submodule very easily and also to avoiding caching issues and to override the ignore setting for the submodule.
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.
Russell Belfer d2ce27dd 2013-06-24T23:16:06 Add public API for pathspec matching This adds a new public API for compiling pathspecs and matching them against the working directory, the index, or a tree from the repository. This also reworks the pathspec internals to allow the sharing of code between the existing internal usage of pathspec matching and the new external API. While this is working and the new API is ready for discussion, I think there is still an incorrect behavior in which patterns are always matched against the full path of an entry without taking the subdirectories into account (so "s*" will match "subdir/file" even though it wouldn't with core Git). Further enhancements are coming, but this was a good place to take a functional snapshot.
Russell Belfer 2a16914c 2013-07-03T12:20:34 Remove GIT_STATUS_SHOW_INDEX_THEN_WORKDIR option This option serves no benefit now that the git_status_list API is available. It was of questionable value before and now it would just be a bad idea to use it rather than the indexed API.
yorah 9b6075b2 2013-07-03T17:07:20 Fix segfault in git_status_foreach_ext() Add tests for the `GIT_STATUS_SHOW_XXX` flags.
Russell Belfer 22b6b82f 2013-06-20T12:16:06 Add status flags to force output sort order Files in status will, be default, be sorted according to the case insensitivity of the filesystem that we're running on. However, in some cases, this is not desirable. Even on case insensitive file systems, 'git status' at the command line will generally use a case sensitive sort (like 'ls'). Some GUIs prefer to display a list of file case insensitively even on case-sensitive platforms. This adds two new flags: GIT_STATUS_OPT_SORT_CASE_SENSITIVELY and GIT_STATUS_OPT_SORT_CASE_INSENSITIVELY that will override the default sort order of the status output and give the user control. This includes tests for exercising these new options and makes the examples/status.c program emulate core Git and always use a case sensitive sort.
Russell Belfer 852ded96 2013-06-20T11:37:58 Fix bug in diff untracked dir scan When scanning untracked directories looking for non-ignored files there was a bug where an empty directory would generate a false error.
Russell Belfer f30fff45 2013-06-19T15:27:25 Add index pathspec-based operations This adds three new public APIs for manipulating the index: 1. `git_index_add_all` is similar to `git add -A` and will add files in the working directory that match a pathspec to the index while honoring ignores, etc. 2. `git_index_remove_all` removes files from the index that match a pathspec. 3. `git_index_update_all` updates entries in the index based on the current contents of the working directory, either added the new information or removing the entry from the index.
Russell Belfer eefef642 2013-06-13T16:09:53 Always do tree to index diffs case sensitively Trees are always case sensitive. The index is always case preserving and will be case sensitive when it is turned into a tree. Therefore the tree and the index can and should always be compared to one another case sensitively. This will restore the index to case insensitive order after the diff has been generated. Consider this a short-term fix. The long term fix is to have the index always stored both case sensitively and case insensitively (at least on platforms that sometimes require case insensitivity).
Russell Belfer 351888cf 2013-06-13T15:37:06 Improve case handling in git_diff__paired_foreach This commit reinstates some changes to git_diff__paired_foreach that were discarded during the rebase (because the diff_output.c file had gone away), and also adjusts the case insensitively logic slightly to hopefully deal with either mismatched icase diffs and other case insensitivity scenarios.
Russell Belfer a3e8dbb4 2013-06-13T15:32:09 Be more careful about the path with diffs This makes diff more careful about picking the canonical path when generating a delta so that it won't accidentally pick up a case-mismatched path on a case-insensitive file system. This should make sure we use the "most accurate" case correct version of the path (i.e. from the tree if possible, or the index if need be).
Vicent Marti 6de9b2ee 2013-06-12T21:10:33 util: It's called `memzero`
Vicent Marti eb58e2d0 2013-06-12T21:05:48 Merge remote-tracking branch 'arrbee/minor-paranoia' into development
Russell Belfer 114f5a6c 2013-06-10T10:10:39 Reorganize diff and add basic diff driver This is a significant reorganization of the diff code to break it into a set of more clearly distinct files and to document the new organization. Hopefully this will make the diff code easier to understand and to extend. This adds a new `git_diff_driver` object that looks of diff driver information from the attributes and the config so that things like function content in diff headers can be provided. The full driver spec is not implemented in the commit - this is focused on the reorganization of the code and putting the driver hooks in place. This also removes a few #includes from src/repository.h that were overbroad, but as a result required extra #includes in a variety of places since including src/repository.h no longer results in pulling in the whole world.
Russell Belfer 3e9e6cda 2013-06-07T09:54:33 Add safe memset and use it This adds a `git__memset` routine that will not be optimized away and updates the places where I memset() right before a free() call to use it.
Russell Belfer f658dc43 2013-05-31T14:09:58 Zero memory for major objects before freeing By zeroing out the memory when we free larger objects (i.e. those that serve as collections of other data, such as repos, odb, refdb), I'm hoping that it will be easier for libgit2 bindings to find errors in their object management code.
Russell Belfer cee695ae 2013-05-31T12:18:43 Make iterators use GIT_ITEROVER & smart advance 1. internal iterators now return GIT_ITEROVER when you go past the last item in the iteration. 2. git_iterator_advance will "advance" to the first item in the iteration if it is called immediately after creating the iterator, which allows a simpler idiom for basic iteration. 3. if git_iterator_advance encounters an error reading data (e.g. a missing tree or an unreadable file), it returns the error but also attempts to advance past the invalid data to prevent an infinite loop. Updated all tests and internal usage of iterators to account for these new behaviors.
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 0293450e 2013-05-17T16:57:49 Fix delta compare to use correct pathname The delta cmp function needs to choose the correct path for ordering when a delta is ADDED, RENAMED, or COPIED.
Russell Belfer 79ef3be4 2013-05-15T14:50:05 Fix diff crash when last item is untracked dir When the last item in a diff was an untracked directory that only contained ignored items, the loop to scan the contents would run off the end of the iterator and dereference a NULL pointer. This includes a test that reproduces the problem and a fix.
Russell Belfer eb05b114 2013-05-07T22:45:01 Fix dumb type in time comparison
Russell Belfer e35e2684 2013-05-07T04:32:17 Add GIT_DIFF_LINE_CONTEXT_EOFNL This adds a new line origin constant for the special line that is used when both files end without a newline. In the course of writing the tests for this, I was having problems with modifying a file but not having diff notice because it was the same size and modified less than one second from the start of the test, so I decided to start working on nanosecond timestamp support. This commit doesn't contain the nanosecond support, but it contains the reorganization of maybe_modified and the hooks so that if the nanosecond data were being read by stat() (or rather being copied by git_index_entry__init_from_stat), then the nsec would be taken into account. This new stuff could probably use some more tests, although there is some amount of it here.
Edward Thomson d8041638 2013-05-02T17:22:13 fix some leaks
Russell Belfer 5fa7e469 2013-04-30T04:13:39 Fix some formatting inconsistency
Russell Belfer e26b14c0 2013-04-26T15:35:47 Update diff handling of untracked directories When diff encounters an untracked directory, there was a shortcut that it took which is not compatible with core git. This makes the default behavior no longer take that shortcut and instead look inside the untracked directory to see if there are any untracked files within it. If there are not, then the directory is treated as an ignore directory instead of an untracked directory. This has implications for the git_status APIs.
Russell Belfer fdb3034e 2013-04-25T14:57:13 Reorganize diff code into functions In preparation for more changes to the internal diff logic, it seemed wise to split the very large git_diff__from_iterators into separate functions that handle the four main cases (unmatched old item, unmatched new item, unmatched new directory, and matched old and new items). Hopefully this will keep the logic easier to follow even as more cases have to be added to this code.
Russell Belfer b7f167da 2013-04-29T13:52:12 Make git_oid_cmp public and add git_oid__cmp
Russell Belfer 687db88f 2013-04-22T16:45:36 Make sure diff output is cleared on error
Russell Belfer 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.
Russell Belfer 608d0466 2013-04-22T13:51:35 Make tree to tree diffs case sensitive When case insensitive tree iterators were added, we started reading the case sensitivity of the index to decide if the tree should be case sensitive. This is good for index-to-tree comparisons, but for tree-to-tree comparisons, we should really default to doing a case sensitive comparison unless the user really wants otherwise.
Linquize a5df71c1 2013-04-19T22:36:01 Support diff.context config
Russell Belfer 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.
Russell Belfer ccfa6805 2013-03-25T23:58:40 Fix some diff ignores and submodule dirty workdir This started out trying to look at the problems from issue #1425 and gradually grew to a broader set of fixes. There are two core things fixed here: 1. When you had an ignore like "/bin" which is rooted at the top of your tree, instead of immediately adding the "bin/" entry as an ignored item in the diff, we were returning all of the direct descendants of the directory as ignored items. This changes things to immediately ignore the directory. Note that this effects the behavior in test_status_ignore__subdirectories so that we no longer exactly match core gits ignore behavior, but the new behavior probably makes more sense (i.e. we now will include an ignored directory inside an untracked directory that we previously would have left off). 2. When a submodule only contained working directory changes, the diff code was always considering it unmodified which was just an outright bug. The HEAD SHA of the submodule matches the SHA in the parent repo index, and since the SHAs matches, the diff code was overwriting the actual status with UNMODIFIED. These fixes broke existing tests test_diff_workdir__submodules and test_status_ignore__subdirectories but looking it over, I actually think the new results are correct and the old results were wrong. @nulltoken had actually commented on the subdirectory ignore issue previously. I also included in the tests some debugging versions of the shared iteration callback routines that print status or diff information. These aren't used actively in the tests, but can be quickly swapped in to test code to give a better picture of what is being scanned in some of the complex test scenarios.
Russell Belfer 37ee70fa 2013-03-25T22:19:39 Implement GIT_STATUS_OPT_EXCLUDE_SUBMODULES This option has been sitting unimplemented for a while, so I finally went through and implemented it along with some tests. As part of this, I improved the implementation of GIT_DIFF_IGNORE_SUBMODULES so it be more diligent about avoiding extra work and about leaving off delta records for submodules to the greatest extent possible (though it may include them still if you are request TYPECHANGE records).
Russell Belfer 0c289dd7 2013-03-25T16:40:16 Recursing into ignored dirs for diff and status This implements working versions of GIT_DIFF_RECURSE_IGNORED_DIRS and GIT_STATUS_OPT_RECURSE_IGNORED_DIRS along with some tests for the newly available behaviors. This is not turned on by default for status, but can be accessed via the options to the extended version of the command.
Russell Belfer 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.
Vicent Martí 1ac10aae 2013-03-12T09:23:53 Merge pull request #1408 from arrbee/refactor-iterators Refactor iterators
Carlos Martín Nieto 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.
Russell Belfer 9bea03ce 2013-03-06T15:16:34 Add INCLUDE_TREES, DONT_AUTOEXPAND iterator flags This standardizes iterator behavior across all three iterators (index, tree, and working directory). Previously the working directory iterator behaved differently from the other two. Each iterator can now operate in one of three modes: 1. *No tree results, auto expand trees* means that only non- tree items will be returned and when a tree/directory is encountered, we will automatically descend into it. 2. *Tree results, auto expand trees* means that results will be given for every item found, including trees, but you only need to call normal git_iterator_advance to yield every item (i.e. trees returned with pre-order iteration). 3. *Tree results, no auto expand* means that calling the normal git_iterator_advance when looking at a tree will not descend into the tree, but will skip over it to the next entry in the parent. Previously, behavior 1 was the only option for index and tree iterators, and behavior 3 was the only option for workdir. The main public API implications of this are that the `git_iterator_advance_into()` call is now valid for all iterators, not just working directory iterators, and all the existing uses of working directory iterators explicitly use the GIT_ITERATOR_DONT_AUTOEXPAND (for now). Interestingly, the majority of the implementation was in the index iterator, since there are no tree entries there and now have to fake them. The tree and working directory iterators only required small modifications.