diff options
Diffstat (limited to 'src/attr.c')
| -rw-r--r-- | src/attr.c | 700 |
1 files changed, 0 insertions, 700 deletions
diff --git a/src/attr.c b/src/attr.c deleted file mode 100644 index 95b49e3de..000000000 --- a/src/attr.c +++ /dev/null @@ -1,700 +0,0 @@ -/* - * Copyright (C) the libgit2 contributors. All rights reserved. - * - * This file is part of libgit2, distributed under the GNU GPL v2 with - * a Linking Exception. For full terms see the included COPYING file. - */ - -#include "attr.h" - -#include "repository.h" -#include "sysdir.h" -#include "config.h" -#include "attr_file.h" -#include "ignore.h" -#include "git2/oid.h" -#include <ctype.h> - -const char *git_attr__true = "[internal]__TRUE__"; -const char *git_attr__false = "[internal]__FALSE__"; -const char *git_attr__unset = "[internal]__UNSET__"; - -git_attr_value_t git_attr_value(const char *attr) -{ - if (attr == NULL || attr == git_attr__unset) - return GIT_ATTR_VALUE_UNSPECIFIED; - - if (attr == git_attr__true) - return GIT_ATTR_VALUE_TRUE; - - if (attr == git_attr__false) - return GIT_ATTR_VALUE_FALSE; - - return GIT_ATTR_VALUE_STRING; -} - -static int collect_attr_files( - git_repository *repo, - git_attr_session *attr_session, - git_attr_options *opts, - const char *path, - git_vector *files); - -static void release_attr_files(git_vector *files); - -int git_attr_get_ext( - const char **value, - git_repository *repo, - git_attr_options *opts, - const char *pathname, - const char *name) -{ - int error; - git_attr_path path; - git_vector files = GIT_VECTOR_INIT; - size_t i, j; - git_attr_file *file; - git_attr_name attr; - git_attr_rule *rule; - git_dir_flag dir_flag = GIT_DIR_FLAG_UNKNOWN; - - GIT_ASSERT_ARG(value); - GIT_ASSERT_ARG(repo); - GIT_ASSERT_ARG(name); - GIT_ERROR_CHECK_VERSION(opts, GIT_ATTR_OPTIONS_VERSION, "git_attr_options"); - - *value = NULL; - - if (git_repository_is_bare(repo)) - dir_flag = GIT_DIR_FLAG_FALSE; - - if (git_attr_path__init(&path, pathname, git_repository_workdir(repo), dir_flag) < 0) - return -1; - - if ((error = collect_attr_files(repo, NULL, opts, pathname, &files)) < 0) - goto cleanup; - - memset(&attr, 0, sizeof(attr)); - attr.name = name; - attr.name_hash = git_attr_file__name_hash(name); - - git_vector_foreach(&files, i, file) { - - git_attr_file__foreach_matching_rule(file, &path, j, rule) { - size_t pos; - - if (!git_vector_bsearch(&pos, &rule->assigns, &attr)) { - *value = ((git_attr_assignment *)git_vector_get( - &rule->assigns, pos))->value; - goto cleanup; - } - } - } - -cleanup: - release_attr_files(&files); - git_attr_path__free(&path); - - return error; -} - -int git_attr_get( - const char **value, - git_repository *repo, - uint32_t flags, - const char *pathname, - const char *name) -{ - git_attr_options opts = GIT_ATTR_OPTIONS_INIT; - - opts.flags = flags; - - return git_attr_get_ext(value, repo, &opts, pathname, name); -} - - -typedef struct { - git_attr_name name; - git_attr_assignment *found; -} attr_get_many_info; - -int git_attr_get_many_with_session( - const char **values, - git_repository *repo, - git_attr_session *attr_session, - git_attr_options *opts, - const char *pathname, - size_t num_attr, - const char **names) -{ - int error; - git_attr_path path; - git_vector files = GIT_VECTOR_INIT; - size_t i, j, k; - git_attr_file *file; - git_attr_rule *rule; - attr_get_many_info *info = NULL; - size_t num_found = 0; - git_dir_flag dir_flag = GIT_DIR_FLAG_UNKNOWN; - - if (!num_attr) - return 0; - - GIT_ASSERT_ARG(values); - GIT_ASSERT_ARG(repo); - GIT_ASSERT_ARG(pathname); - GIT_ASSERT_ARG(names); - GIT_ERROR_CHECK_VERSION(opts, GIT_ATTR_OPTIONS_VERSION, "git_attr_options"); - - if (git_repository_is_bare(repo)) - dir_flag = GIT_DIR_FLAG_FALSE; - - if (git_attr_path__init(&path, pathname, git_repository_workdir(repo), dir_flag) < 0) - return -1; - - if ((error = collect_attr_files(repo, attr_session, opts, pathname, &files)) < 0) - goto cleanup; - - info = git__calloc(num_attr, sizeof(attr_get_many_info)); - GIT_ERROR_CHECK_ALLOC(info); - - git_vector_foreach(&files, i, file) { - - git_attr_file__foreach_matching_rule(file, &path, j, rule) { - - for (k = 0; k < num_attr; k++) { - size_t pos; - - if (info[k].found != NULL) /* already found assignment */ - continue; - - if (!info[k].name.name) { - info[k].name.name = names[k]; - info[k].name.name_hash = git_attr_file__name_hash(names[k]); - } - - if (!git_vector_bsearch(&pos, &rule->assigns, &info[k].name)) { - info[k].found = (git_attr_assignment *) - git_vector_get(&rule->assigns, pos); - values[k] = info[k].found->value; - - if (++num_found == num_attr) - goto cleanup; - } - } - } - } - - for (k = 0; k < num_attr; k++) { - if (!info[k].found) - values[k] = NULL; - } - -cleanup: - release_attr_files(&files); - git_attr_path__free(&path); - git__free(info); - - return error; -} - -int git_attr_get_many( - const char **values, - git_repository *repo, - uint32_t flags, - const char *pathname, - size_t num_attr, - const char **names) -{ - git_attr_options opts = GIT_ATTR_OPTIONS_INIT; - - opts.flags = flags; - - return git_attr_get_many_with_session( - values, repo, NULL, &opts, pathname, num_attr, names); -} - -int git_attr_get_many_ext( - const char **values, - git_repository *repo, - git_attr_options *opts, - const char *pathname, - size_t num_attr, - const char **names) -{ - return git_attr_get_many_with_session( - values, repo, NULL, opts, pathname, num_attr, names); -} - -int git_attr_foreach( - git_repository *repo, - uint32_t flags, - const char *pathname, - int (*callback)(const char *name, const char *value, void *payload), - void *payload) -{ - git_attr_options opts = GIT_ATTR_OPTIONS_INIT; - - opts.flags = flags; - - return git_attr_foreach_ext(repo, &opts, pathname, callback, payload); -} - -int git_attr_foreach_ext( - git_repository *repo, - git_attr_options *opts, - const char *pathname, - int (*callback)(const char *name, const char *value, void *payload), - void *payload) -{ - int error; - git_attr_path path; - git_vector files = GIT_VECTOR_INIT; - size_t i, j, k; - git_attr_file *file; - git_attr_rule *rule; - git_attr_assignment *assign; - git_strmap *seen = NULL; - git_dir_flag dir_flag = GIT_DIR_FLAG_UNKNOWN; - - GIT_ASSERT_ARG(repo); - GIT_ASSERT_ARG(callback); - GIT_ERROR_CHECK_VERSION(opts, GIT_ATTR_OPTIONS_VERSION, "git_attr_options"); - - if (git_repository_is_bare(repo)) - dir_flag = GIT_DIR_FLAG_FALSE; - - if (git_attr_path__init(&path, pathname, git_repository_workdir(repo), dir_flag) < 0) - return -1; - - if ((error = collect_attr_files(repo, NULL, opts, pathname, &files)) < 0 || - (error = git_strmap_new(&seen)) < 0) - goto cleanup; - - git_vector_foreach(&files, i, file) { - - git_attr_file__foreach_matching_rule(file, &path, j, rule) { - - git_vector_foreach(&rule->assigns, k, assign) { - /* skip if higher priority assignment was already seen */ - if (git_strmap_exists(seen, assign->name)) - continue; - - if ((error = git_strmap_set(seen, assign->name, assign)) < 0) - goto cleanup; - - error = callback(assign->name, assign->value, payload); - if (error) { - git_error_set_after_callback(error); - goto cleanup; - } - } - } - } - -cleanup: - git_strmap_free(seen); - release_attr_files(&files); - git_attr_path__free(&path); - - return error; -} - -static int preload_attr_source( - git_repository *repo, - git_attr_session *attr_session, - git_attr_file_source *source) -{ - int error; - git_attr_file *preload = NULL; - - if (!source) - return 0; - - error = git_attr_cache__get(&preload, repo, attr_session, source, - git_attr_file__parse_buffer, true); - - if (!error) - git_attr_file__free(preload); - - return error; -} - -GIT_INLINE(int) preload_attr_file( - git_repository *repo, - git_attr_session *attr_session, - const char *base, - const char *filename) -{ - git_attr_file_source source = { GIT_ATTR_FILE_SOURCE_FILE }; - - if (!filename) - return 0; - - source.base = base; - source.filename = filename; - - return preload_attr_source(repo, attr_session, &source); -} - -static int system_attr_file( - git_buf *out, - git_attr_session *attr_session) -{ - int error; - - if (!attr_session) { - error = git_sysdir_find_system_file(out, GIT_ATTR_FILE_SYSTEM); - - if (error == GIT_ENOTFOUND) - git_error_clear(); - - return error; - } - - if (!attr_session->init_sysdir) { - error = git_sysdir_find_system_file(&attr_session->sysdir, GIT_ATTR_FILE_SYSTEM); - - if (error == GIT_ENOTFOUND) - git_error_clear(); - else if (error) - return error; - - attr_session->init_sysdir = 1; - } - - if (attr_session->sysdir.size == 0) - return GIT_ENOTFOUND; - - /* We can safely provide a git_buf with no allocation (asize == 0) to - * a consumer. This allows them to treat this as a regular `git_buf`, - * but their call to `git_buf_dispose` will not attempt to free it. - */ - git_buf_attach_notowned( - out, attr_session->sysdir.ptr, attr_session->sysdir.size); - return 0; -} - -static int attr_setup( - git_repository *repo, - git_attr_session *attr_session, - git_attr_options *opts) -{ - git_buf system = GIT_BUF_INIT, info = GIT_BUF_INIT; - git_attr_file_source index_source = { GIT_ATTR_FILE_SOURCE_INDEX, NULL, GIT_ATTR_FILE, NULL }; - git_attr_file_source head_source = { GIT_ATTR_FILE_SOURCE_HEAD, NULL, GIT_ATTR_FILE, NULL }; - git_attr_file_source commit_source = { GIT_ATTR_FILE_SOURCE_COMMIT, NULL, GIT_ATTR_FILE, NULL }; - git_index *idx = NULL; - const char *workdir; - int error = 0; - - if (attr_session && attr_session->init_setup) - return 0; - - if ((error = git_attr_cache__init(repo)) < 0) - return error; - - /* - * Preload attribute files that could contain macros so the - * definitions will be available for later file parsing. - */ - - if ((error = system_attr_file(&system, attr_session)) < 0 || - (error = preload_attr_file(repo, attr_session, NULL, system.ptr)) < 0) { - if (error != GIT_ENOTFOUND) - goto out; - - error = 0; - } - - if ((error = preload_attr_file(repo, attr_session, NULL, - git_repository_attr_cache(repo)->cfg_attr_file)) < 0) - goto out; - - if ((error = git_repository_item_path(&info, repo, GIT_REPOSITORY_ITEM_INFO)) < 0 || - (error = preload_attr_file(repo, attr_session, info.ptr, GIT_ATTR_FILE_INREPO)) < 0) { - if (error != GIT_ENOTFOUND) - goto out; - - error = 0; - } - - if ((workdir = git_repository_workdir(repo)) != NULL && - (error = preload_attr_file(repo, attr_session, workdir, GIT_ATTR_FILE)) < 0) - goto out; - - if ((error = git_repository_index__weakptr(&idx, repo)) < 0 || - (error = preload_attr_source(repo, attr_session, &index_source)) < 0) - goto out; - - if ((opts && (opts->flags & GIT_ATTR_CHECK_INCLUDE_HEAD) != 0) && - (error = preload_attr_source(repo, attr_session, &head_source)) < 0) - goto out; - - if ((opts && (opts->flags & GIT_ATTR_CHECK_INCLUDE_COMMIT) != 0)) { -#ifndef GIT_DEPRECATE_HARD - if (opts->commit_id) - commit_source.commit_id = opts->commit_id; - else -#endif - commit_source.commit_id = &opts->attr_commit_id; - - if ((error = preload_attr_source(repo, attr_session, &commit_source)) < 0) - goto out; - } - - if (attr_session) - attr_session->init_setup = 1; - -out: - git_buf_dispose(&system); - git_buf_dispose(&info); - - return error; -} - -int git_attr_add_macro( - git_repository *repo, - const char *name, - const char *values) -{ - int error; - git_attr_rule *macro = NULL; - git_pool *pool; - - GIT_ASSERT_ARG(repo); - GIT_ASSERT_ARG(name); - - if ((error = git_attr_cache__init(repo)) < 0) - return error; - - macro = git__calloc(1, sizeof(git_attr_rule)); - GIT_ERROR_CHECK_ALLOC(macro); - - pool = &git_repository_attr_cache(repo)->pool; - - macro->match.pattern = git_pool_strdup(pool, name); - GIT_ERROR_CHECK_ALLOC(macro->match.pattern); - - macro->match.length = strlen(macro->match.pattern); - macro->match.flags = GIT_ATTR_FNMATCH_MACRO; - - error = git_attr_assignment__parse(repo, pool, ¯o->assigns, &values); - - if (!error) - error = git_attr_cache__insert_macro(repo, macro); - - if (error < 0) - git_attr_rule__free(macro); - - return error; -} - -typedef struct { - git_repository *repo; - git_attr_session *attr_session; - git_attr_options *opts; - const char *workdir; - git_index *index; - git_vector *files; -} attr_walk_up_info; - -static int attr_decide_sources( - uint32_t flags, - bool has_wd, - bool has_index, - git_attr_file_source_t *srcs) -{ - int count = 0; - - switch (flags & 0x03) { - case GIT_ATTR_CHECK_FILE_THEN_INDEX: - if (has_wd) - srcs[count++] = GIT_ATTR_FILE_SOURCE_FILE; - if (has_index) - srcs[count++] = GIT_ATTR_FILE_SOURCE_INDEX; - break; - case GIT_ATTR_CHECK_INDEX_THEN_FILE: - if (has_index) - srcs[count++] = GIT_ATTR_FILE_SOURCE_INDEX; - if (has_wd) - srcs[count++] = GIT_ATTR_FILE_SOURCE_FILE; - break; - case GIT_ATTR_CHECK_INDEX_ONLY: - if (has_index) - srcs[count++] = GIT_ATTR_FILE_SOURCE_INDEX; - break; - } - - if ((flags & GIT_ATTR_CHECK_INCLUDE_HEAD) != 0) - srcs[count++] = GIT_ATTR_FILE_SOURCE_HEAD; - - if ((flags & GIT_ATTR_CHECK_INCLUDE_COMMIT) != 0) - srcs[count++] = GIT_ATTR_FILE_SOURCE_COMMIT; - - return count; -} - -static int push_attr_source( - git_repository *repo, - git_attr_session *attr_session, - git_vector *list, - git_attr_file_source *source, - bool allow_macros) -{ - int error = 0; - git_attr_file *file = NULL; - - error = git_attr_cache__get(&file, repo, attr_session, - source, - git_attr_file__parse_buffer, - allow_macros); - - if (error < 0) - return error; - - if (file != NULL) { - if ((error = git_vector_insert(list, file)) < 0) - git_attr_file__free(file); - } - - return error; -} - -GIT_INLINE(int) push_attr_file( - git_repository *repo, - git_attr_session *attr_session, - git_vector *list, - const char *base, - const char *filename) -{ - git_attr_file_source source = { GIT_ATTR_FILE_SOURCE_FILE, base, filename }; - return push_attr_source(repo, attr_session, list, &source, true); -} - -static int push_one_attr(void *ref, const char *path) -{ - attr_walk_up_info *info = (attr_walk_up_info *)ref; - git_attr_file_source_t src[GIT_ATTR_FILE_NUM_SOURCES]; - int error = 0, n_src, i; - bool allow_macros; - - n_src = attr_decide_sources(info->opts ? info->opts->flags : 0, - info->workdir != NULL, - info->index != NULL, - src); - - allow_macros = info->workdir ? !strcmp(info->workdir, path) : false; - - for (i = 0; !error && i < n_src; ++i) { - git_attr_file_source source = { src[i], path, GIT_ATTR_FILE }; - - if (src[i] == GIT_ATTR_FILE_SOURCE_COMMIT && info->opts) { -#ifndef GIT_DEPRECATE_HARD - if (info->opts->commit_id) - source.commit_id = info->opts->commit_id; - else -#endif - source.commit_id = &info->opts->attr_commit_id; - } - - error = push_attr_source(info->repo, info->attr_session, info->files, - &source, allow_macros); - } - - return error; -} - -static void release_attr_files(git_vector *files) -{ - size_t i; - git_attr_file *file; - - git_vector_foreach(files, i, file) { - git_attr_file__free(file); - files->contents[i] = NULL; - } - git_vector_free(files); -} - -static int collect_attr_files( - git_repository *repo, - git_attr_session *attr_session, - git_attr_options *opts, - const char *path, - git_vector *files) -{ - int error = 0; - git_buf dir = GIT_BUF_INIT, attrfile = GIT_BUF_INIT; - const char *workdir = git_repository_workdir(repo); - attr_walk_up_info info = { NULL }; - - GIT_ASSERT(!git_path_is_absolute(path)); - - if ((error = attr_setup(repo, attr_session, opts)) < 0) - return error; - - /* Resolve path in a non-bare repo */ - if (workdir != NULL) { - if (!(error = git_repository_workdir_path(&dir, repo, path))) - error = git_path_find_dir(&dir); - } - else { - error = git_path_dirname_r(&dir, path); - } - - if (error < 0) - goto cleanup; - - /* in precendence order highest to lowest: - * - $GIT_DIR/info/attributes - * - path components with .gitattributes - * - config core.attributesfile - * - $GIT_PREFIX/etc/gitattributes - */ - - if ((error = git_repository_item_path(&attrfile, repo, GIT_REPOSITORY_ITEM_INFO)) < 0 || - (error = push_attr_file(repo, attr_session, files, attrfile.ptr, GIT_ATTR_FILE_INREPO)) < 0) { - if (error != GIT_ENOTFOUND) - goto cleanup; - } - - info.repo = repo; - info.attr_session = attr_session; - info.opts = opts; - info.workdir = workdir; - if (git_repository_index__weakptr(&info.index, repo) < 0) - git_error_clear(); /* no error even if there is no index */ - info.files = files; - - if (!strcmp(dir.ptr, ".")) - error = push_one_attr(&info, ""); - else - error = git_path_walk_up(&dir, workdir, push_one_attr, &info); - - if (error < 0) - goto cleanup; - - if (git_repository_attr_cache(repo)->cfg_attr_file != NULL) { - error = push_attr_file(repo, attr_session, files, NULL, git_repository_attr_cache(repo)->cfg_attr_file); - if (error < 0) - goto cleanup; - } - - if (!opts || (opts->flags & GIT_ATTR_CHECK_NO_SYSTEM) == 0) { - error = system_attr_file(&dir, attr_session); - - if (!error) - error = push_attr_file(repo, attr_session, files, NULL, dir.ptr); - else if (error == GIT_ENOTFOUND) - error = 0; - } - - cleanup: - if (error < 0) - release_attr_files(files); - git_buf_dispose(&attrfile); - git_buf_dispose(&dir); - - return error; -} |