| #include "git2/ignore.h" |
| #include "common.h" |
| #include "ignore.h" |
| #include "attr.h" |
| #include "path.h" |
| #include "config.h" |
| |
| #define GIT_IGNORE_INTERNAL "[internal]exclude" |
| |
| #define GIT_IGNORE_DEFAULT_RULES ".\n..\n.git\n" |
| |
| static int parse_ignore_file( |
| git_repository *repo, void *parsedata, const char *buffer, git_attr_file *ignores) |
| { |
| int error = 0; |
| git_attr_fnmatch *match = NULL; |
| const char *scan = NULL; |
| char *context = NULL; |
| int ignore_case = false; |
| |
| /* Prefer to have the caller pass in a git_ignores as the parsedata |
| * object. If they did not, then look up the value of ignore_case */ |
| if (parsedata != NULL) |
| ignore_case = ((git_ignores *)parsedata)->ignore_case; |
| else if (git_repository__cvar(&ignore_case, repo, GIT_CVAR_IGNORECASE) < 0) |
| return error; |
| |
| if (ignores->key && git__suffixcmp(ignores->key, "/" GIT_IGNORE_FILE) == 0) { |
| context = ignores->key + 2; |
| context[strlen(context) - strlen(GIT_IGNORE_FILE)] = '\0'; |
| } |
| |
| scan = buffer; |
| |
| while (!error && *scan) { |
| if (!match) { |
| match = git__calloc(1, sizeof(*match)); |
| GITERR_CHECK_ALLOC(match); |
| } |
| |
| match->flags = GIT_ATTR_FNMATCH_ALLOWSPACE | GIT_ATTR_FNMATCH_ALLOWNEG; |
| |
| if (!(error = git_attr_fnmatch__parse( |
| match, ignores->pool, context, &scan))) |
| { |
| match->flags |= GIT_ATTR_FNMATCH_IGNORE; |
| |
| if (ignore_case) |
| match->flags |= GIT_ATTR_FNMATCH_ICASE; |
| |
| scan = git__next_line(scan); |
| error = git_vector_insert(&ignores->rules, match); |
| } |
| |
| if (error != 0) { |
| git__free(match->pattern); |
| match->pattern = NULL; |
| |
| if (error == GIT_ENOTFOUND) |
| error = 0; |
| } else { |
| match = NULL; /* vector now "owns" the match */ |
| } |
| } |
| |
| git__free(match); |
| /* restore file path used for context */ |
| if (context) |
| context[strlen(context)] = '.'; /* first char of GIT_IGNORE_FILE */ |
| |
| return error; |
| } |
| |
| #define push_ignore_file(R,IGN,S,B,F) \ |
| git_attr_cache__push_file((R),(B),(F),GIT_ATTR_FILE_FROM_FILE,parse_ignore_file,(IGN),(S)) |
| |
| static int push_one_ignore(void *ref, git_buf *path) |
| { |
| git_ignores *ign = (git_ignores *)ref; |
| return push_ignore_file(ign->repo, ign, &ign->ign_path, path->ptr, GIT_IGNORE_FILE); |
| } |
| |
| static int get_internal_ignores(git_attr_file **ign, git_repository *repo) |
| { |
| int error; |
| |
| if (!(error = git_attr_cache__init(repo))) |
| error = git_attr_cache__internal_file(repo, GIT_IGNORE_INTERNAL, ign); |
| |
| if (!error && !(*ign)->rules.length) |
| error = parse_ignore_file(repo, NULL, GIT_IGNORE_DEFAULT_RULES, *ign); |
| |
| return error; |
| } |
| |
| int git_ignore__for_path( |
| git_repository *repo, |
| const char *path, |
| git_ignores *ignores) |
| { |
| int error = 0; |
| const char *workdir = git_repository_workdir(repo); |
| |
| assert(ignores); |
| |
| ignores->repo = repo; |
| git_buf_init(&ignores->dir, 0); |
| ignores->ign_internal = NULL; |
| |
| /* Read the ignore_case flag */ |
| if ((error = git_repository__cvar( |
| &ignores->ignore_case, repo, GIT_CVAR_IGNORECASE)) < 0) |
| goto cleanup; |
| |
| if ((error = git_vector_init(&ignores->ign_path, 8, NULL)) < 0 || |
| (error = git_vector_init(&ignores->ign_global, 2, NULL)) < 0 || |
| (error = git_attr_cache__init(repo)) < 0) |
| goto cleanup; |
| |
| /* given a unrooted path in a non-bare repo, resolve it */ |
| if (workdir && git_path_root(path) < 0) |
| error = git_path_find_dir(&ignores->dir, path, workdir); |
| else |
| error = git_buf_sets(&ignores->dir, path); |
| if (error < 0) |
| goto cleanup; |
| |
| /* set up internals */ |
| error = get_internal_ignores(&ignores->ign_internal, repo); |
| if (error < 0) |
| goto cleanup; |
| |
| /* load .gitignore up the path */ |
| if (workdir != NULL) { |
| error = git_path_walk_up( |
| &ignores->dir, workdir, push_one_ignore, ignores); |
| if (error < 0) |
| goto cleanup; |
| } |
| |
| /* load .git/info/exclude */ |
| error = push_ignore_file(repo, ignores, &ignores->ign_global, |
| git_repository_path(repo), GIT_IGNORE_FILE_INREPO); |
| if (error < 0) |
| goto cleanup; |
| |
| /* load core.excludesfile */ |
| if (git_repository_attr_cache(repo)->cfg_excl_file != NULL) |
| error = push_ignore_file(repo, ignores, &ignores->ign_global, NULL, |
| git_repository_attr_cache(repo)->cfg_excl_file); |
| |
| cleanup: |
| if (error < 0) |
| git_ignore__free(ignores); |
| |
| return error; |
| } |
| |
| int git_ignore__push_dir(git_ignores *ign, const char *dir) |
| { |
| if (git_buf_joinpath(&ign->dir, ign->dir.ptr, dir) < 0) |
| return -1; |
| |
| return push_ignore_file( |
| ign->repo, ign, &ign->ign_path, ign->dir.ptr, GIT_IGNORE_FILE); |
| } |
| |
| int git_ignore__pop_dir(git_ignores *ign) |
| { |
| if (ign->ign_path.length > 0) { |
| git_attr_file *file = git_vector_last(&ign->ign_path); |
| const char *start, *end, *scan; |
| size_t keylen; |
| |
| /* - ign->dir looks something like "a/b" (or "a/b/c/d") |
| * - file->key looks something like "0#a/b/.gitignore |
| * |
| * We are popping the last directory off ign->dir. We also want to |
| * remove the file from the vector if the directory part of the key |
| * matches the ign->dir path. We need to test if the "a/b" part of |
| * the file key matches the path we are about to pop. |
| */ |
| |
| for (start = end = scan = &file->key[2]; *scan; ++scan) |
| if (*scan == '/') |
| end = scan; /* point 'end' to last '/' in key */ |
| keylen = (end - start) + 1; |
| |
| if (ign->dir.size >= keylen && |
| !memcmp(ign->dir.ptr + ign->dir.size - keylen, start, keylen)) |
| git_vector_pop(&ign->ign_path); |
| |
| git_buf_rtruncate_at_char(&ign->dir, '/'); |
| } |
| return 0; |
| } |
| |
| void git_ignore__free(git_ignores *ignores) |
| { |
| /* don't need to free ignores->ign_internal since it is in cache */ |
| git_vector_free(&ignores->ign_path); |
| git_vector_free(&ignores->ign_global); |
| git_buf_free(&ignores->dir); |
| } |
| |
| static bool ignore_lookup_in_rules( |
| git_vector *rules, git_attr_path *path, int *ignored) |
| { |
| size_t j; |
| git_attr_fnmatch *match; |
| |
| git_vector_rforeach(rules, j, match) { |
| if (git_attr_fnmatch__match(match, path)) { |
| *ignored = ((match->flags & GIT_ATTR_FNMATCH_NEGATIVE) == 0); |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| int git_ignore__lookup( |
| git_ignores *ignores, const char *pathname, int *ignored) |
| { |
| unsigned int i; |
| git_attr_file *file; |
| git_attr_path path; |
| |
| if (git_attr_path__init( |
| &path, pathname, git_repository_workdir(ignores->repo)) < 0) |
| return -1; |
| |
| /* first process builtins - success means path was found */ |
| if (ignore_lookup_in_rules( |
| &ignores->ign_internal->rules, &path, ignored)) |
| goto cleanup; |
| |
| /* next process files in the path */ |
| git_vector_foreach(&ignores->ign_path, i, file) { |
| if (ignore_lookup_in_rules(&file->rules, &path, ignored)) |
| goto cleanup; |
| } |
| |
| /* last process global ignores */ |
| git_vector_foreach(&ignores->ign_global, i, file) { |
| if (ignore_lookup_in_rules(&file->rules, &path, ignored)) |
| goto cleanup; |
| } |
| |
| *ignored = 0; |
| |
| cleanup: |
| git_attr_path__free(&path); |
| return 0; |
| } |
| |
| int git_ignore_add_rule( |
| git_repository *repo, |
| const char *rules) |
| { |
| int error; |
| git_attr_file *ign_internal; |
| |
| if (!(error = get_internal_ignores(&ign_internal, repo))) |
| error = parse_ignore_file(repo, NULL, rules, ign_internal); |
| |
| return error; |
| } |
| |
| int git_ignore_clear_internal_rules( |
| git_repository *repo) |
| { |
| int error; |
| git_attr_file *ign_internal; |
| |
| if (!(error = get_internal_ignores(&ign_internal, repo))) { |
| git_attr_file__clear_rules(ign_internal); |
| |
| return parse_ignore_file( |
| repo, NULL, GIT_IGNORE_DEFAULT_RULES, ign_internal); |
| } |
| |
| return error; |
| } |
| |
| int git_ignore_path_is_ignored( |
| int *ignored, |
| git_repository *repo, |
| const char *pathname) |
| { |
| int error; |
| const char *workdir; |
| git_attr_path path; |
| char *tail, *end; |
| bool full_is_dir; |
| git_ignores ignores; |
| unsigned int i; |
| git_attr_file *file; |
| |
| assert(ignored && pathname); |
| |
| workdir = repo ? git_repository_workdir(repo) : NULL; |
| |
| if ((error = git_attr_path__init(&path, pathname, workdir)) < 0) |
| return error; |
| |
| tail = path.path; |
| end = &path.full.ptr[path.full.size]; |
| full_is_dir = path.is_dir; |
| |
| while (1) { |
| /* advance to next component of path */ |
| path.basename = tail; |
| |
| while (tail < end && *tail != '/') tail++; |
| *tail = '\0'; |
| |
| path.full.size = (tail - path.full.ptr); |
| path.is_dir = (tail == end) ? full_is_dir : true; |
| |
| /* initialize ignores the first time through */ |
| if (path.basename == path.path && |
| (error = git_ignore__for_path(repo, path.path, &ignores)) < 0) |
| break; |
| |
| /* first process builtins - success means path was found */ |
| if (ignore_lookup_in_rules( |
| &ignores.ign_internal->rules, &path, ignored)) |
| goto cleanup; |
| |
| /* next process files in the path */ |
| git_vector_foreach(&ignores.ign_path, i, file) { |
| if (ignore_lookup_in_rules(&file->rules, &path, ignored)) |
| goto cleanup; |
| } |
| |
| /* last process global ignores */ |
| git_vector_foreach(&ignores.ign_global, i, file) { |
| if (ignore_lookup_in_rules(&file->rules, &path, ignored)) |
| goto cleanup; |
| } |
| |
| /* if we found no rules before reaching the end, we're done */ |
| if (tail == end) |
| break; |
| |
| /* now add this directory to list of ignores */ |
| if ((error = git_ignore__push_dir(&ignores, path.path)) < 0) |
| break; |
| |
| /* reinstate divider in path */ |
| *tail = '/'; |
| while (*tail == '/') tail++; |
| } |
| |
| *ignored = 0; |
| |
| cleanup: |
| git_attr_path__free(&path); |
| git_ignore__free(&ignores); |
| return error; |
| } |
| |
| |
| int git_ignore__check_pathspec_for_exact_ignores( |
| git_repository *repo, |
| git_vector *vspec, |
| bool no_fnmatch) |
| { |
| int error = 0; |
| size_t i; |
| git_attr_fnmatch *match; |
| int ignored; |
| git_buf path = GIT_BUF_INIT; |
| const char *wd, *filename; |
| git_index *idx; |
| |
| if ((error = git_repository__ensure_not_bare( |
| repo, "validate pathspec")) < 0 || |
| (error = git_repository_index(&idx, repo)) < 0) |
| return error; |
| |
| wd = git_repository_workdir(repo); |
| |
| git_vector_foreach(vspec, i, match) { |
| /* skip wildcard matches (if they are being used) */ |
| if ((match->flags & GIT_ATTR_FNMATCH_HASWILD) != 0 && |
| !no_fnmatch) |
| continue; |
| |
| filename = match->pattern; |
| |
| /* if file is already in the index, it's fine */ |
| if (git_index_get_bypath(idx, filename, 0) != NULL) |
| continue; |
| |
| if ((error = git_buf_joinpath(&path, wd, filename)) < 0) |
| break; |
| |
| /* is there a file on disk that matches this exactly? */ |
| if (!git_path_isfile(path.ptr)) |
| continue; |
| |
| /* is that file ignored? */ |
| if ((error = git_ignore_path_is_ignored(&ignored, repo, filename)) < 0) |
| break; |
| |
| if (ignored) { |
| giterr_set(GITERR_INVALID, "pathspec contains ignored file '%s'", |
| filename); |
| error = GIT_EINVALIDSPEC; |
| break; |
| } |
| } |
| |
| git_index_free(idx); |
| git_buf_free(&path); |
| |
| return error; |
| } |
| |