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2013-04-15dir.c: git-status --ignored: don't scan the work tree twiceLibravatar Karsten Blees1-4/+6
'git-status --ignored' still scans the work tree twice to collect untracked and ignored files, respectively. fill_directory / read_directory already supports collecting untracked and ignored files in a single directory scan. However, the DIR_COLLECT_IGNORED flag to enable this has some git-add specific side-effects (e.g. it doesn't recurse into ignored directories, so listing ignored files with --untracked=all doesn't work). The DIR_SHOW_IGNORED flag doesn't list untracked files and returns ignored files in dir_struct.entries[] (instead of dir_struct.ignored[] as DIR_COLLECT_IGNORED). DIR_SHOW_IGNORED is used all throughout git. We don't want to break the existing API, so lets introduce a new flag DIR_SHOW_IGNORED_TOO that lists untracked as well as ignored files similar to DIR_COLLECT_FILES, but will recurse into sub-directories based on the other flags as DIR_SHOW_IGNORED does. In dir.c::read_directory_recursive, add ignored files to either dir_struct.entries[] or dir_struct.ignored[] based on the flags. Also move the DIR_COLLECT_IGNORED case here so that filling result lists is in a common place. In wt-status.c::wt_status_collect_untracked, use the new flag and read results from dir_struct.ignored[]. Remove the extra fill_directory call. builtin/check-ignore.c doesn't call fill_directory, setting the git-add specific DIR_COLLECT_IGNORED flag has no effect here. Remove for clarity. Update API documentation to reflect the changes. Performance: with this patch, 'git-status --ignored' is typically as fast as 'git-status'. Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-15dir.c: git-status --ignored: don't scan the work tree three timesLibravatar Karsten Blees1-74/+72
'git-status --ignored' recursively scans directories up to three times: 1. To collect untracked files. 2. To collect ignored files. 3. When collecting ignored files, to check that an untracked directory that potentially contains ignored files doesn't also contain untracked files (i.e. isn't already listed as untracked). Let's get rid of case 3 first. Currently, read_directory_recursive returns a boolean whether a directory contains the requested files or not (actually, it returns the number of files, but no caller actually needs that), and DIR_SHOW_IGNORED specifies what we're looking for. To be able to test for both untracked and ignored files in a single scan, we need to return a bit more info, and the result must be independent of the DIR_SHOW_IGNORED flag. Reuse the path_treatment enum as return value of read_directory_recursive. Split path_handled in two separate values path_excluded and path_untracked that don't change their meaning with the DIR_SHOW_IGNORED flag. We don't need an extra value path_untracked_and_excluded, as directories with both untracked and ignored files should be listed as untracked. Rename path_ignored to path_none for clarity (i.e. "don't treat that path" in contrast to "the path is ignored and should be treated according to DIR_SHOW_IGNORED"). Replace enum directory_treatment with path_treatment. That's just another enum with the same meaning, no need to translate back and forth. In treat_directory, get rid of the extra read_directory_recursive call and all the DIR_SHOW_IGNORED-specific code. In read_directory_recursive, decide whether to dir_add_name path_excluded or path_untracked paths based on the DIR_SHOW_IGNORED flag. The return value of read_directory_recursive is the maximum path_treatment of all files and sub-directories. In the check_only case, abort when we've reached the most significant value (path_untracked). Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-15dir.c: git-status: avoid is_excluded checks for tracked filesLibravatar Karsten Blees1-27/+11
Checking if a file is in the index is much faster (hashtable lookup) than checking if the file is excluded (linear search over exclude patterns). Skip is_excluded checks for files: move the cache_name_exists check from treat_file to treat_one_path and return early if the file is tracked. This can safely be done as all other code paths also return path_ignored for tracked files, and dir_add_ignored skips tracked files as well. There's just one line left in treat_file, so move this to treat_one_path as well. Here's some performance data for git-status from the linux and WebKit repos (best of 10 runs on a Debian Linux on SSD, core.preloadIndex=true): | status | status --ignored | linux | WebKit | linux | WebKit -------+-------+--------+-------+--------- before | 0.218 | 1.583 | 0.321 | 2.579 after | 0.156 | 0.988 | 0.202 | 1.279 gain | 1.397 | 1.602 | 1.589 | 2.016 Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-15dir.c: replace is_path_excluded with now equivalent is_excluded APILibravatar Karsten Blees1-73/+6
Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-15dir.c: unify is_excluded and is_path_excluded APIsLibravatar Karsten Blees1-64/+43
The is_excluded and is_path_excluded APIs are very similar, except for a few noteworthy differences: is_excluded doesn't handle ignored directories, results for paths within ignored directories are incorrect. This is probably based on the premise that recursive directory scans should stop at ignored directories, which is no longer true (in certain cases, read_directory_recursive currently calls is_excluded *and* is_path_excluded to get correct ignored state). is_excluded caches parsed .gitignore files of the last directory in struct dir_struct. If the directory changes, it finds a common parent directory and is very careful to drop only as much state as necessary. On the other hand, is_excluded will also read and parse .gitignore files in already ignored directories, which are completely irrelevant. is_path_excluded correctly handles ignored directories by checking if any component in the path is excluded. As it uses is_excluded internally, this unfortunately forces is_excluded to drop and re-read all .gitignore files, as there is no common parent directory for the root dir. is_path_excluded tracks state in a separate struct path_exclude_check, which is essentially a wrapper of dir_struct with two more fields. However, as is_path_excluded also modifies dir_struct, it is not possible to e.g. use multiple path_exclude_check structures with the same dir_struct in parallel. The additional structure just unnecessarily complicates the API. Teach is_excluded / prep_exclude about ignored directories: whenever entering a new directory, first check if the entire directory is excluded. Remember the excluded state in dir_struct. Don't traverse into already ignored directories (i.e. don't read irrelevant .gitignore files). Directories could also be excluded by exclude patterns specified on the command line or .git/info/exclude, so we cannot simply skip prep_exclude entirely if there's no .gitignore file name (dir_struct.exclude_per_dir). Move this check to just before actually reading the file. is_path_excluded is now equivalent to is_excluded, so we can simply redirect to it (the public API is cleaned up in the next patch). The performance impact of the additional ignored check per directory is hardly noticeable when reading directories recursively (e.g. 'git status'). However, performance of git commands using the is_path_excluded API (e.g. 'git ls-files --cached --ignored --exclude-standard') is greatly improved as this no longer re-reads .gitignore files on each call. Here's some performance data from the linux and WebKit repos (best of 10 runs on a Debian Linux on SSD, core.preloadIndex=true): | ls-files -ci | status | status --ignored | linux | WebKit | linux | WebKit | linux | WebKit -------+-------+--------+-------+--------+-------+--------- before | 0.506 | 6.539 | 0.212 | 1.555 | 0.323 | 2.541 after | 0.080 | 1.191 | 0.218 | 1.583 | 0.321 | 2.579 gain | 6.325 | 5.490 | 0.972 | 0.982 | 1.006 | 0.985 Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-15dir.c: move prep_excludeLibravatar Karsten Blees1-72/+72
Move prep_exclude in preparation for the next patch. Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-15dir.c: factor out parts of last_exclude_matching for later reuseLibravatar Karsten Blees1-14/+22
Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-15dir.c: git-clean -d -X: don't delete tracked directoriesLibravatar Karsten Blees1-8/+3
The notion of "ignored tracked" directories introduced in 721ac4ed "dir.c: Make git-status --ignored more consistent" has a few unwanted side effects: - git-clean -d -X: deletes ignored tracked directories. git-clean should never delete tracked content. - git-ls-files --ignored --other --directory: lists ignored tracked directories instead of "other" directories. - git-status --ignored: lists ignored tracked directories while contained files may be listed as modified. Paths listed by git-status should be disjoint (except in long format where a path may be listed in both the staged and unstaged section). Additionally, the current behaviour violates documentation in gitignore(5) ("Specifies intentionally *untracked* files to ignore") and Documentation/ technical/api-directory-listing.txt ("DIR_SHOW_OTHER_DIRECTORIES: Include a directory that is *not tracked*."). In dir.c::treat_directory, remove the special handling of ignored tracked directories, so that the DIR_SHOW_OTHER_DIRECTORIES flag only affects "other" (i.e. untracked) directories. In dir.c::dir_add_name, check that added paths are untracked even if DIR_SHOW_IGNORED is set. Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-15dir.c: make 'git-status --ignored' work within leading directoriesLibravatar Karsten Blees1-0/+3
'git-status --ignored path/' doesn't list ignored files and directories within 'path' if some component of 'path' is classified as untracked. Disable the DIR_SHOW_OTHER_DIRECTORIES flag while traversing leading directories. This prevents treat_leading_path() with DIR_SHOW_IGNORED flag from aborting at the top level untracked directory. As a side effect, this also eliminates a recursive directory scan per leading directory level, as treat_directory() can no longer call read_directory_recursive() when called from treat_leading_path(). Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-15dir.c: git-status --ignored: don't list empty directories as ignoredLibravatar Karsten Blees1-2/+3
'git-status --ignored' lists empty untracked directories as ignored, even though they don't have any ignored files. When checking if a directory is already listed as untracked (i.e. shouldn't be listed as ignored as well), don't assume that the directory has only ignored files if it doesn't have untracked files, as the directory may be empty. Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-15dir.c: git-ls-files --directories: don't hide empty directoriesLibravatar Karsten Blees1-4/+2
'git-ls-files --ignored --directories' hides empty directories even though --no-empty-directory was not specified. Treat the DIR_HIDE_EMPTY_DIRECTORIES flag independently from DIR_SHOW_IGNORED to make all git-ls-files options work as expected. Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-15dir.c: git-status --ignored: don't list empty ignored directoriesLibravatar Karsten Blees1-7/+4
'git-status --ignored' lists ignored tracked directories without any ignored files if a tracked file happens to match an exclude pattern. Always exclude tracked files. Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-15dir.c: git-status --ignored: don't list files in ignored directoriesLibravatar Karsten Blees1-3/+1
'git-status --ignored' lists both the ignored directory and the ignored files if the files are in a tracked sub directory. When recursing into sub directories in read_directory_recursive, pass on the check_only parameter so that we don't accidentally add the files. Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-15dir.c: git-status --ignored: don't drop ignored directoriesLibravatar Karsten Blees1-0/+9
'git-status --ignored' drops ignored directories if they contain untracked files in an untracked sub directory. Fix it by getting exact (recursive) excluded status in treat_directory. Signed-off-by: Karsten Blees <blees@dcon.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-07Merge branch 'jk/rm-removed-paths'Libravatar Junio C Hamano1-1/+1
A handful of test cases and a corner case bugfix for "git rm". * jk/rm-removed-paths: t3600: document failure of rm across symbolic links t3600: test behavior of reverse-d/f conflict rm: do not complain about d/f conflicts during deletion
2013-04-04rm: do not complain about d/f conflicts during deletionLibravatar Jeff King1-1/+1
If we used to have an index entry "d/f", but "d" has been replaced by a non-directory entry, the user may still want to run "git rm" to delete the stale index entry. They could use "git rm --cached" to just touch the index, but "git rm" should also work: we explicitly try to handle the case that the file has already been removed from the working tree. However, because unlinking "d/f" in this case will not yield ENOENT, but rather ENOTDIR, we do not notice that the file is already gone. Instead, we report it as an error. The simple solution is to treat ENOTDIR in this case exactly like ENOENT; all we want to know is whether the file is already gone, and if a leading path is no longer a directory, then by definition the sub-path is gone. Reported-by: jpinheiro <7jpinheiro@gmail.com> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-03Merge branch 'jc/directory-attrs-regression-fix'Libravatar Junio C Hamano1-7/+51
Fix 1.8.1.x regression that stopped matching "dir" (without trailing slash) to a directory "dir". * jc/directory-attrs-regression-fix: t: check that a pattern without trailing slash matches a directory dir.c::match_pathname(): pay attention to the length of string parameters dir.c::match_pathname(): adjust patternlen when shifting pattern dir.c::match_basename(): pay attention to the length of string parameters attr.c::path_matches(): special case paths that end with a slash attr.c::path_matches(): the basename is part of the pathname
2013-03-28dir.c::match_pathname(): pay attention to the length of string parametersLibravatar Jeff King1-1/+12
This function takes two counted strings: a <pattern, patternlen> pair and a <pathname, pathlen> pair. But we end up feeding the result to fnmatch, which expects NUL-terminated strings. We can fix this by calling the fnmatch_icase_mem function, which handles re-allocating into a NUL-terminated string if necessary. While we're at it, we can avoid even calling fnmatch in some cases. In addition to patternlen, we get "prefix", the size of the pattern that contains no wildcard characters. We do a straight match of the prefix part first, and then use fnmatch to cover the rest. But if there are no wildcards in the pattern at all, we do not even need to call fnmatch; we would simply be comparing two empty strings. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-03-28dir.c::match_pathname(): adjust patternlen when shifting patternLibravatar Jeff King1-0/+1
If we receive a pattern that starts with "/", we shift it forward to avoid looking at the "/" part. Since the prefix and patternlen parameters are counts of what is in the pattern, we must decrement them as we increment the pointer. We remembered to handle prefix, but not patternlen. This didn't cause any bugs, though, because the patternlen parameter is not actually used. Since it will be used in future patches, let's correct this oversight. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-03-28dir.c::match_basename(): pay attention to the length of string parametersLibravatar Junio C Hamano1-4/+36
The function takes two counted strings (<basename, basenamelen> and <pattern, patternlen>) as parameters, together with prefix (the length of the prefix in pattern that is to be matched literally without globbing against the basename) and EXC_* flags that tells it how to match the pattern against the basename. However, it did not pay attention to the length of these counted strings. Update them to do the following: * When the entire pattern is to be matched literally, the pattern matches the basename only when the lengths of them are the same, and they match up to that length. * When the pattern is "*" followed by a string to be matched literally, make sure that the basenamelen is equal or longer than the "literal" part of the pattern, and the tail of the basename string matches that literal part. * Otherwise, use the new fnmatch_icase_mem helper to make sure we only lookmake sure we use only look at the counted part of the strings. Because these counted strings are full strings most of the time, we check for termination to avoid unnecessary allocation. Signed-off-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-25Merge branch 'nd/retire-fnmatch'Libravatar Junio C Hamano1-1/+2
Replace our use of fnmatch(3) with a more feature-rich wildmatch. A handful patches at the bottom have been moved to nd/wildmatch to graduate as part of that branch, before this series solidifies. We may want to mark USE_WILDMATCH as an experimental curiosity a bit more clearly (i.e. should not be enabled in production environment, because it will make the behaviour between builds unpredictable). * nd/retire-fnmatch: Makefile: add USE_WILDMATCH to use wildmatch as fnmatch wildmatch: advance faster in <asterisk> + <literal> patterns wildmatch: make a special case for "*/" with FNM_PATHNAME test-wildmatch: add "perf" command to compare wildmatch and fnmatch wildmatch: support "no FNM_PATHNAME" mode wildmatch: make dowild() take arbitrary flags wildmatch: rename constants and update prototype
2013-01-23Merge branch 'as/check-ignore'Libravatar Junio C Hamano1-34/+118
Add a new command "git check-ignore" for debugging .gitignore files. The variable names may want to get cleaned up but that can be done in-tree. * as/check-ignore: clean.c, ls-files.c: respect encapsulation of exclude_list_groups t0008: avoid brace expansion add git-check-ignore sub-command setup.c: document get_pathspec() add.c: extract new die_if_path_beyond_symlink() for reuse add.c: extract check_path_for_gitlink() from treat_gitlinks() for reuse pathspec.c: rename newly public functions for clarity add.c: move pathspec matchers into new pathspec.c for reuse add.c: remove unused argument from validate_pathspec() dir.c: improve docs for match_pathspec() and match_pathspec_depth() dir.c: provide clear_directory() for reclaiming dir_struct memory dir.c: keep track of where patterns came from dir.c: use a single struct exclude_list per source of excludes Conflicts: builtin/ls-files.c dir.c
2013-01-14Merge branch 'ap/status-ignored-in-ignored-directory'Libravatar Junio C Hamano1-21/+76
Output from "git status --ignored" showed an unexpected interaction with "--untracked". * ap/status-ignored-in-ignored-directory: status: always report ignored tracked directories git-status: Test --ignored behavior dir.c: Make git-status --ignored more consistent
2013-01-10Merge branch 'as/dir-c-cleanup'Libravatar Junio C Hamano1-35/+114
Refactor and generally clean up the directory traversal API implementation. * as/dir-c-cleanup: dir.c: rename free_excludes() to clear_exclude_list() dir.c: refactor is_path_excluded() dir.c: refactor is_excluded() dir.c: refactor is_excluded_from_list() dir.c: rename excluded() to is_excluded() dir.c: rename excluded_from_list() to is_excluded_from_list() dir.c: rename path_excluded() to is_path_excluded() dir.c: rename cryptic 'which' variable to more consistent name Improve documentation and comments regarding directory traversal API api-directory-listing.txt: update to match code
2013-01-10Merge branch 'nd/wildmatch'Libravatar Junio C Hamano1-1/+3
Allows pathname patterns in .gitignore and .gitattributes files with double-asterisks "foo/**/bar" to match any number of directory hierarchies. * nd/wildmatch: wildmatch: replace variable 'special' with better named ones compat/fnmatch: respect NO_FNMATCH* even on glibc wildmatch: fix "**" special case t3070: Disable some failing fnmatch tests test-wildmatch: avoid Windows path mangling Support "**" wildcard in .gitignore and .gitattributes wildmatch: make /**/ match zero or more directories wildmatch: adjust "**" behavior wildmatch: fix case-insensitive matching wildmatch: remove static variable force_lower_case wildmatch: make wildmatch's return value compatible with fnmatch t3070: disable unreliable fnmatch tests Integrate wildmatch to git wildmatch: follow Git's coding convention wildmatch: remove unnecessary functions Import wildmatch from rsync ctype: support iscntrl, ispunct, isxdigit and isprint ctype: make sane_ctype[] const array Conflicts: Makefile
2013-01-07status: always report ignored tracked directoriesLibravatar Antoine Pelisse1-6/+3
When enumerating paths that are ignored, paths the index knows about are not included in the result. The "index knows about" check is done by consulting the name hash, not the actual contents of the index: - When core.ignorecase is false, directory names are not in the name hash, and ignored ones are shown as ignored (directories can never be tracked anyway). - When core.ignorecase is true, however, the name hash keeps track of the names of directories, in order to detect additions of the paths under different cases. This causes ignored directories to be mistakenly excluded when enumerating ignored paths. Stop excluding directories that are in the name hash when looking for ignored files in dir_add_name(); the names that are actually in the index are excluded much earlier in the callchain in treat_file(), so this fix will not make them mistakenly identified as ignored. Signed-off-by: Antoine Pelisse <apelisse@gmail.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-06dir.c: improve docs for match_pathspec() and match_pathspec_depth()Libravatar Adam Spiers1-12/+26
Fix a grammatical issue in the description of these functions, and make it more obvious how and why seen[] can be reused across multiple invocations. Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-06dir.c: provide clear_directory() for reclaiming dir_struct memoryLibravatar Adam Spiers1-0/+30
By the end of a directory traversal, a dir_struct instance will typically contains pointers to various data structures on the heap. clear_directory() provides a convenient way to reclaim that memory. Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-06dir.c: keep track of where patterns came fromLibravatar Adam Spiers1-6/+20
For exclude patterns read in from files, the filename is stored in the exclude list, and the originating line number is stored in the individual exclude (counting starting at 1). For exclude patterns provided on the command line, a string describing the source of the patterns is stored in the exclude list, and the sequence number assigned to each exclude pattern is negative, with counting starting at -1. So for example the 2nd pattern provided via --exclude would be numbered -2. This allows any future consumers of that data to easily distinguish between exclude patterns from files vs. from the CLI. Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-06dir.c: use a single struct exclude_list per source of excludesLibravatar Adam Spiers1-19/+45
Previously each exclude_list could potentially contain patterns from multiple sources. For example dir->exclude_list[EXC_FILE] would typically contain patterns from .git/info/exclude and core.excludesfile, and dir->exclude_list[EXC_DIRS] could contain patterns from multiple per-directory .gitignore files during directory traversal (i.e. when dir->exclude_stack was more than one item deep). We split these composite exclude_lists up into three groups of exclude_lists (EXC_CMDL / EXC_DIRS / EXC_FILE as before), so that each exclude_list now contains patterns from a single source. This will allow us to cleanly track the origin of each pattern simply by adding a src field to struct exclude_list, rather than to struct exclude, which would make memory management of the source string tricky in the EXC_DIRS case where its contents are dynamically generated. Similarly, by moving the filebuf member from struct exclude_stack to struct exclude_list, it allows us to track and subsequently free memory buffers allocated during the parsing of all exclude files, rather than only tracking buffers allocated for files in the EXC_DIRS group. Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-05Merge branch 'jk/pathspec-literal'Libravatar Junio C Hamano1-11/+27
Allow scripts to feed literal paths to commands that take pathspecs, by disabling wildcard globbing. * jk/pathspec-literal: add global --literal-pathspecs option Conflicts: dir.c
2013-01-01dir.c: Make git-status --ignored more consistentLibravatar Antoine Pelisse1-20/+78
The current behavior of git-status is inconsistent and misleading. Especially when used with --untracked-files=all option: - files ignored in untracked directories will be missing from status output. - untracked files in committed yet ignored directories are also missing. - with --untracked-files=normal, untracked directories that contains only ignored files are dropped too. Make the behavior more consistent across all possible use cases: - "--ignored --untracked-files=normal" doesn't show each specific files but top directory. It instead shows untracked directories that only contains ignored files, and ignored tracked directories with untracked files. - "--ignored --untracked-files=all" shows all ignored files, either because it's in an ignored directory (tracked or untracked), or because the file is explicitly ignored. Signed-off-by: Antoine Pelisse <apelisse@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-01wildmatch: support "no FNM_PATHNAME" modeLibravatar Nguyễn Thái Ngọc Duy1-1/+1
So far, wildmatch() has always honoured directory boundary and there was no way to turn it off. Make it behave more like fnmatch() by requiring all callers that want the FNM_PATHNAME behaviour to pass that in the equivalent flag WM_PATHNAME. Callers that do not specify WM_PATHNAME will get wildcards like ? and * in their patterns matched against '/', just like not passing FNM_PATHNAME to fnmatch(). Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-01wildmatch: rename constants and update prototypeLibravatar Nguyễn Thái Ngọc Duy1-1/+2
- All exported constants now have a prefix WM_ - Do not rely on FNM_* constants, use the WM_ counterparts - Remove TRUE and FALSE to follow Git's coding style - While at it, turn flags type from int to unsigned int - Add an (unused yet) argument to carry extra information so that we don't have to change the prototype again later when we need to pass other stuff to wildmatch Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-28dir.c: rename free_excludes() to clear_exclude_list()Libravatar Adam Spiers1-1/+5
It is clearer to use a 'clear_' prefix for functions which empty and deallocate the contents of a data structure without freeing the structure itself, and a 'free_' prefix for functions which also free the structure itself. http://article.gmane.org/gmane.comp.version-control.git/206128 Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-28dir.c: refactor is_path_excluded()Libravatar Adam Spiers1-9/+38
In a similar way to the previous commit, this extracts a new helper function last_exclude_matching_path() which return the last exclude_list element which matched, or NULL if no match was found. is_path_excluded() becomes a wrapper around this, and just returns 0 or 1 depending on whether any matching exclude_list element was found. This allows callers to find out _why_ a given path was excluded, rather than just whether it was or not, paving the way for a new git sub-command which allows users to test their exclude lists from the command line. Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-28dir.c: refactor is_excluded()Libravatar Adam Spiers1-9/+29
In a similar way to the previous commit, this extracts a new helper function last_exclude_matching() which returns the last exclude_list element which matched, or NULL if no match was found. is_excluded() becomes a wrapper around this, and just returns 0 or 1 depending on whether any matching exclude_list element was found. This allows callers to find out _why_ a given path was excluded, rather than just whether it was or not, paving the way for a new git sub-command which allows users to test their exclude lists from the command line. Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-28dir.c: refactor is_excluded_from_list()Libravatar Adam Spiers1-9/+28
The excluded function uses a new helper function called last_exclude_matching_from_list() to perform the inner loop over all of the exclude patterns. The helper just tells us whether the path is included, excluded, or undecided. However, it may be useful to know _which_ pattern was triggered. So let's pass out the entire exclude match, which contains the status information we were already passing out. Further patches can make use of this. This is a modified forward port of a patch from 2009 by Jeff King: http://article.gmane.org/gmane.comp.version-control.git/108815 Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-28dir.c: rename excluded() to is_excluded()Libravatar Adam Spiers1-5/+5
Continue adopting clearer names for exclude functions. This is_* naming pattern for functions returning booleans was discussed here: http://thread.gmane.org/gmane.comp.version-control.git/204661/focus=204924 Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-28dir.c: rename excluded_from_list() to is_excluded_from_list()Libravatar Adam Spiers1-5/+6
Continue adopting clearer names for exclude functions. This 'is_*' naming pattern for functions returning booleans was discussed here: http://thread.gmane.org/gmane.comp.version-control.git/204661/focus=204924 Also adjust their callers as necessary. Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-28dir.c: rename path_excluded() to is_path_excluded()Libravatar Adam Spiers1-2/+2
Start adopting clearer names for exclude functions. This 'is_*' naming pattern for functions returning booleans was agreed here: http://thread.gmane.org/gmane.comp.version-control.git/204661/focus=204924 Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-28dir.c: rename cryptic 'which' variable to more consistent nameLibravatar Adam Spiers1-5/+5
'el' is only *slightly* less cryptic, but is already used as the variable name for a struct exclude_list pointer in numerous other places, so this reduces the number of cryptic variable names in use by one :-) Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-28Improve documentation and comments regarding directory traversal APILibravatar Adam Spiers1-1/+7
traversal API has a few potentially confusing properties. These comments clarify a few key aspects and will hopefully make it easier to understand for other newcomers in the future. Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-19add global --literal-pathspecs optionLibravatar Jeff King1-6/+19
Git takes pathspec arguments in many places to limit the scope of an operation. These pathspecs are treated not as literal paths, but as glob patterns that can be fed to fnmatch. When a user is giving a specific pattern, this is a nice feature. However, when programatically providing pathspecs, it can be a nuisance. For example, to find the latest revision which modified "$foo", one can use "git rev-list -- $foo". But if "$foo" contains glob characters (e.g., "f*"), it will erroneously match more entries than desired. The caller needs to quote the characters in $foo, and even then, the results may not be exactly the same as with a literal pathspec. For instance, the depth checks in match_pathspec_depth do not kick in if we match via fnmatch. This patch introduces a global command-line option (i.e., one for "git" itself, not for specific commands) to turn this behavior off. It also has a matching environment variable, which can make it easier if you are a script or porcelain interface that is going to issue many such commands. This option cannot turn off globbing for particular pathspecs. That could eventually be done with a ":(noglob)" magic pathspec prefix. However, that level of granularity is more cumbersome to use for many cases, and doing ":(noglob)" right would mean converting the whole codebase to use "struct pathspec", as the usual "const char **pathspec" cannot represent extra per-item flags. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-11-26pathspec: apply "*.c" optimization from excludeLibravatar Nguyễn Thái Ngọc Duy1-2/+16
When a pattern contains only a single asterisk as wildcard, e.g. "foo*bar", after literally comparing the leading part "foo" with the string, we can compare the tail of the string and make sure it matches "bar", instead of running fnmatch() on "*bar" against the remainder of the string. -O2 build on linux-2.6, without the patch: $ time git rev-list --quiet HEAD -- '*.c' real 0m40.770s user 0m40.290s sys 0m0.256s With the patch $ time ~/w/git/git rev-list --quiet HEAD -- '*.c' real 0m34.288s user 0m33.997s sys 0m0.205s The above command is not supposed to be widely popular. It's chosen because it exercises pathspec matching a lot. The point is it cuts down matching time for popular patterns like *.c, which could be used as pathspec in other places. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-11-26pathspec: do exact comparison on the leading non-wildcard partLibravatar Nguyễn Thái Ngọc Duy1-1/+17
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-11-19pathspec: save the non-wildcard length partLibravatar Nguyễn Thái Ngọc Duy1-3/+3
We mark pathspec with wildcards with the field use_wildcard. We could do better by saving the length of the non-wildcard part, which can be used for optimizations such as f9f6e2c (exclude: do strcmp as much as possible before fnmatch - 2012-06-07). Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-11-09Merge branch 'nd/attr-match-optim-more'Libravatar Jeff King1-66/+126
Start laying the foundation to build the "wildmatch" after we can agree on its desired semantics. * nd/attr-match-optim-more: attr: more matching optimizations from .gitignore gitignore: make pattern parsing code a separate function exclude: split pathname matching code into a separate function exclude: fix a bug in prefix compare optimization exclude: split basename matching code into a separate function exclude: stricten a length check in EXC_FLAG_ENDSWITH case
2012-10-15Support "**" wildcard in .gitignore and .gitattributesLibravatar Nguyễn Thái Ngọc Duy1-1/+3
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-10-15attr: more matching optimizations from .gitignoreLibravatar Nguyễn Thái Ngọc Duy1-11/+11
.gitattributes and .gitignore share the same pattern syntax but has separate matching implementation. Over the years, ignore's implementation accumulates more optimizations while attr's stays the same. This patch reuses the core matching functions that are also used by excluded_from_list. excluded_from_list and path_matches can't be merged due to differences in exclude and attr, for example: * "!pattern" syntax is forbidden in .gitattributes. As an attribute can be unset (i.e. set to a special value "false") or made back to unspecified (i.e. not even set to "false"), "!pattern attr" is unclear which one it means. * we support attaching attributes to directories, but git-core internally does not currently make use of attributes on directories. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>