diff options
Diffstat (limited to 'third_party/git/submodule-config.c')
| -rw-r--r-- | third_party/git/submodule-config.c | 800 |
1 files changed, 0 insertions, 800 deletions
diff --git a/third_party/git/submodule-config.c b/third_party/git/submodule-config.c deleted file mode 100644 index 4264ee216f..0000000000 --- a/third_party/git/submodule-config.c +++ /dev/null @@ -1,800 +0,0 @@ -#include "cache.h" -#include "dir.h" -#include "repository.h" -#include "config.h" -#include "submodule-config.h" -#include "submodule.h" -#include "strbuf.h" -#include "object-store.h" -#include "parse-options.h" - -/* - * submodule cache lookup structure - * There is one shared set of 'struct submodule' entries which can be - * looked up by their sha1 blob id of the .gitmodules file and either - * using path or name as key. - * for_path stores submodule entries with path as key - * for_name stores submodule entries with name as key - */ -struct submodule_cache { - struct hashmap for_path; - struct hashmap for_name; - unsigned initialized:1; - unsigned gitmodules_read:1; -}; - -/* - * thin wrapper struct needed to insert 'struct submodule' entries to - * the hashmap - */ -struct submodule_entry { - struct hashmap_entry ent; - struct submodule *config; -}; - -enum lookup_type { - lookup_name, - lookup_path -}; - -static int config_path_cmp(const void *unused_cmp_data, - const void *entry, - const void *entry_or_key, - const void *unused_keydata) -{ - const struct submodule_entry *a = entry; - const struct submodule_entry *b = entry_or_key; - - return strcmp(a->config->path, b->config->path) || - !oideq(&a->config->gitmodules_oid, &b->config->gitmodules_oid); -} - -static int config_name_cmp(const void *unused_cmp_data, - const void *entry, - const void *entry_or_key, - const void *unused_keydata) -{ - const struct submodule_entry *a = entry; - const struct submodule_entry *b = entry_or_key; - - return strcmp(a->config->name, b->config->name) || - !oideq(&a->config->gitmodules_oid, &b->config->gitmodules_oid); -} - -static struct submodule_cache *submodule_cache_alloc(void) -{ - return xcalloc(1, sizeof(struct submodule_cache)); -} - -static void submodule_cache_init(struct submodule_cache *cache) -{ - hashmap_init(&cache->for_path, config_path_cmp, NULL, 0); - hashmap_init(&cache->for_name, config_name_cmp, NULL, 0); - cache->initialized = 1; -} - -static void free_one_config(struct submodule_entry *entry) -{ - free((void *) entry->config->path); - free((void *) entry->config->name); - free((void *) entry->config->branch); - free((void *) entry->config->update_strategy.command); - free(entry->config); -} - -static void submodule_cache_clear(struct submodule_cache *cache) -{ - struct hashmap_iter iter; - struct submodule_entry *entry; - - if (!cache->initialized) - return; - - /* - * We iterate over the name hash here to be symmetric with the - * allocation of struct submodule entries. Each is allocated by - * their .gitmodules blob sha1 and submodule name. - */ - hashmap_iter_init(&cache->for_name, &iter); - while ((entry = hashmap_iter_next(&iter))) - free_one_config(entry); - - hashmap_free(&cache->for_path, 1); - hashmap_free(&cache->for_name, 1); - cache->initialized = 0; - cache->gitmodules_read = 0; -} - -void submodule_cache_free(struct submodule_cache *cache) -{ - submodule_cache_clear(cache); - free(cache); -} - -static unsigned int hash_oid_string(const struct object_id *oid, - const char *string) -{ - return memhash(oid->hash, the_hash_algo->rawsz) + strhash(string); -} - -static void cache_put_path(struct submodule_cache *cache, - struct submodule *submodule) -{ - unsigned int hash = hash_oid_string(&submodule->gitmodules_oid, - submodule->path); - struct submodule_entry *e = xmalloc(sizeof(*e)); - hashmap_entry_init(e, hash); - e->config = submodule; - hashmap_put(&cache->for_path, e); -} - -static void cache_remove_path(struct submodule_cache *cache, - struct submodule *submodule) -{ - unsigned int hash = hash_oid_string(&submodule->gitmodules_oid, - submodule->path); - struct submodule_entry e; - struct submodule_entry *removed; - hashmap_entry_init(&e, hash); - e.config = submodule; - removed = hashmap_remove(&cache->for_path, &e, NULL); - free(removed); -} - -static void cache_add(struct submodule_cache *cache, - struct submodule *submodule) -{ - unsigned int hash = hash_oid_string(&submodule->gitmodules_oid, - submodule->name); - struct submodule_entry *e = xmalloc(sizeof(*e)); - hashmap_entry_init(e, hash); - e->config = submodule; - hashmap_add(&cache->for_name, e); -} - -static const struct submodule *cache_lookup_path(struct submodule_cache *cache, - const struct object_id *gitmodules_oid, const char *path) -{ - struct submodule_entry *entry; - unsigned int hash = hash_oid_string(gitmodules_oid, path); - struct submodule_entry key; - struct submodule key_config; - - oidcpy(&key_config.gitmodules_oid, gitmodules_oid); - key_config.path = path; - - hashmap_entry_init(&key, hash); - key.config = &key_config; - - entry = hashmap_get(&cache->for_path, &key, NULL); - if (entry) - return entry->config; - return NULL; -} - -static struct submodule *cache_lookup_name(struct submodule_cache *cache, - const struct object_id *gitmodules_oid, const char *name) -{ - struct submodule_entry *entry; - unsigned int hash = hash_oid_string(gitmodules_oid, name); - struct submodule_entry key; - struct submodule key_config; - - oidcpy(&key_config.gitmodules_oid, gitmodules_oid); - key_config.name = name; - - hashmap_entry_init(&key, hash); - key.config = &key_config; - - entry = hashmap_get(&cache->for_name, &key, NULL); - if (entry) - return entry->config; - return NULL; -} - -int check_submodule_name(const char *name) -{ - /* Disallow empty names */ - if (!*name) - return -1; - - /* - * Look for '..' as a path component. Check both '/' and '\\' as - * separators rather than is_dir_sep(), because we want the name rules - * to be consistent across platforms. - */ - goto in_component; /* always start inside component */ - while (*name) { - char c = *name++; - if (c == '/' || c == '\\') { -in_component: - if (name[0] == '.' && name[1] == '.' && - (!name[2] || name[2] == '/' || name[2] == '\\')) - return -1; - } - } - - return 0; -} - -static int name_and_item_from_var(const char *var, struct strbuf *name, - struct strbuf *item) -{ - const char *subsection, *key; - int subsection_len, parse; - parse = parse_config_key(var, "submodule", &subsection, - &subsection_len, &key); - if (parse < 0 || !subsection) - return 0; - - strbuf_add(name, subsection, subsection_len); - if (check_submodule_name(name->buf) < 0) { - warning(_("ignoring suspicious submodule name: %s"), name->buf); - strbuf_release(name); - return 0; - } - - strbuf_addstr(item, key); - - return 1; -} - -static struct submodule *lookup_or_create_by_name(struct submodule_cache *cache, - const struct object_id *gitmodules_oid, const char *name) -{ - struct submodule *submodule; - struct strbuf name_buf = STRBUF_INIT; - - submodule = cache_lookup_name(cache, gitmodules_oid, name); - if (submodule) - return submodule; - - submodule = xmalloc(sizeof(*submodule)); - - strbuf_addstr(&name_buf, name); - submodule->name = strbuf_detach(&name_buf, NULL); - - submodule->path = NULL; - submodule->url = NULL; - submodule->update_strategy.type = SM_UPDATE_UNSPECIFIED; - submodule->update_strategy.command = NULL; - submodule->fetch_recurse = RECURSE_SUBMODULES_NONE; - submodule->ignore = NULL; - submodule->branch = NULL; - submodule->recommend_shallow = -1; - - oidcpy(&submodule->gitmodules_oid, gitmodules_oid); - - cache_add(cache, submodule); - - return submodule; -} - -static int parse_fetch_recurse(const char *opt, const char *arg, - int die_on_error) -{ - switch (git_parse_maybe_bool(arg)) { - case 1: - return RECURSE_SUBMODULES_ON; - case 0: - return RECURSE_SUBMODULES_OFF; - default: - if (!strcmp(arg, "on-demand")) - return RECURSE_SUBMODULES_ON_DEMAND; - /* - * Please update $__git_fetch_recurse_submodules in - * git-completion.bash when you add new options. - */ - if (die_on_error) - die("bad %s argument: %s", opt, arg); - else - return RECURSE_SUBMODULES_ERROR; - } -} - -int parse_submodule_fetchjobs(const char *var, const char *value) -{ - int fetchjobs = git_config_int(var, value); - if (fetchjobs < 0) - die(_("negative values not allowed for submodule.fetchjobs")); - return fetchjobs; -} - -int parse_fetch_recurse_submodules_arg(const char *opt, const char *arg) -{ - return parse_fetch_recurse(opt, arg, 1); -} - -int option_fetch_parse_recurse_submodules(const struct option *opt, - const char *arg, int unset) -{ - int *v; - - if (!opt->value) - return -1; - - v = opt->value; - - if (unset) { - *v = RECURSE_SUBMODULES_OFF; - } else { - if (arg) - *v = parse_fetch_recurse_submodules_arg(opt->long_name, arg); - else - *v = RECURSE_SUBMODULES_ON; - } - return 0; -} - -static int parse_update_recurse(const char *opt, const char *arg, - int die_on_error) -{ - switch (git_parse_maybe_bool(arg)) { - case 1: - return RECURSE_SUBMODULES_ON; - case 0: - return RECURSE_SUBMODULES_OFF; - default: - if (die_on_error) - die("bad %s argument: %s", opt, arg); - return RECURSE_SUBMODULES_ERROR; - } -} - -int parse_update_recurse_submodules_arg(const char *opt, const char *arg) -{ - return parse_update_recurse(opt, arg, 1); -} - -static int parse_push_recurse(const char *opt, const char *arg, - int die_on_error) -{ - switch (git_parse_maybe_bool(arg)) { - case 1: - /* There's no simple "on" value when pushing */ - if (die_on_error) - die("bad %s argument: %s", opt, arg); - else - return RECURSE_SUBMODULES_ERROR; - case 0: - return RECURSE_SUBMODULES_OFF; - default: - if (!strcmp(arg, "on-demand")) - return RECURSE_SUBMODULES_ON_DEMAND; - else if (!strcmp(arg, "check")) - return RECURSE_SUBMODULES_CHECK; - else if (!strcmp(arg, "only")) - return RECURSE_SUBMODULES_ONLY; - /* - * Please update $__git_push_recurse_submodules in - * git-completion.bash when you add new modes. - */ - else if (die_on_error) - die("bad %s argument: %s", opt, arg); - else - return RECURSE_SUBMODULES_ERROR; - } -} - -int parse_push_recurse_submodules_arg(const char *opt, const char *arg) -{ - return parse_push_recurse(opt, arg, 1); -} - -static void warn_multiple_config(const struct object_id *treeish_name, - const char *name, const char *option) -{ - const char *commit_string = "WORKTREE"; - if (treeish_name) - commit_string = oid_to_hex(treeish_name); - warning("%s:.gitmodules, multiple configurations found for " - "'submodule.%s.%s'. Skipping second one!", - commit_string, name, option); -} - -static void warn_command_line_option(const char *var, const char *value) -{ - warning(_("ignoring '%s' which may be interpreted as" - " a command-line option: %s"), var, value); -} - -struct parse_config_parameter { - struct submodule_cache *cache; - const struct object_id *treeish_name; - const struct object_id *gitmodules_oid; - int overwrite; -}; - -static int parse_config(const char *var, const char *value, void *data) -{ - struct parse_config_parameter *me = data; - struct submodule *submodule; - struct strbuf name = STRBUF_INIT, item = STRBUF_INIT; - int ret = 0; - - /* this also ensures that we only parse submodule entries */ - if (!name_and_item_from_var(var, &name, &item)) - return 0; - - submodule = lookup_or_create_by_name(me->cache, - me->gitmodules_oid, - name.buf); - - if (!strcmp(item.buf, "path")) { - if (!value) - ret = config_error_nonbool(var); - else if (looks_like_command_line_option(value)) - warn_command_line_option(var, value); - else if (!me->overwrite && submodule->path) - warn_multiple_config(me->treeish_name, submodule->name, - "path"); - else { - if (submodule->path) - cache_remove_path(me->cache, submodule); - free((void *) submodule->path); - submodule->path = xstrdup(value); - cache_put_path(me->cache, submodule); - } - } else if (!strcmp(item.buf, "fetchrecursesubmodules")) { - /* when parsing worktree configurations we can die early */ - int die_on_error = is_null_oid(me->gitmodules_oid); - if (!me->overwrite && - submodule->fetch_recurse != RECURSE_SUBMODULES_NONE) - warn_multiple_config(me->treeish_name, submodule->name, - "fetchrecursesubmodules"); - else - submodule->fetch_recurse = parse_fetch_recurse( - var, value, - die_on_error); - } else if (!strcmp(item.buf, "ignore")) { - if (!value) - ret = config_error_nonbool(var); - else if (!me->overwrite && submodule->ignore) - warn_multiple_config(me->treeish_name, submodule->name, - "ignore"); - else if (strcmp(value, "untracked") && - strcmp(value, "dirty") && - strcmp(value, "all") && - strcmp(value, "none")) - warning("Invalid parameter '%s' for config option " - "'submodule.%s.ignore'", value, name.buf); - else { - free((void *) submodule->ignore); - submodule->ignore = xstrdup(value); - } - } else if (!strcmp(item.buf, "url")) { - if (!value) { - ret = config_error_nonbool(var); - } else if (looks_like_command_line_option(value)) { - warn_command_line_option(var, value); - } else if (!me->overwrite && submodule->url) { - warn_multiple_config(me->treeish_name, submodule->name, - "url"); - } else { - free((void *) submodule->url); - submodule->url = xstrdup(value); - } - } else if (!strcmp(item.buf, "update")) { - if (!value) - ret = config_error_nonbool(var); - else if (!me->overwrite && - submodule->update_strategy.type != SM_UPDATE_UNSPECIFIED) - warn_multiple_config(me->treeish_name, submodule->name, - "update"); - else if (parse_submodule_update_strategy(value, - &submodule->update_strategy) < 0) - die(_("invalid value for %s"), var); - } else if (!strcmp(item.buf, "shallow")) { - if (!me->overwrite && submodule->recommend_shallow != -1) - warn_multiple_config(me->treeish_name, submodule->name, - "shallow"); - else - submodule->recommend_shallow = - git_config_bool(var, value); - } else if (!strcmp(item.buf, "branch")) { - if (!me->overwrite && submodule->branch) - warn_multiple_config(me->treeish_name, submodule->name, - "branch"); - else { - free((void *)submodule->branch); - submodule->branch = xstrdup(value); - } - } - - strbuf_release(&name); - strbuf_release(&item); - - return ret; -} - -static int gitmodule_oid_from_commit(const struct object_id *treeish_name, - struct object_id *gitmodules_oid, - struct strbuf *rev) -{ - int ret = 0; - - if (is_null_oid(treeish_name)) { - oidclr(gitmodules_oid); - return 1; - } - - strbuf_addf(rev, "%s:.gitmodules", oid_to_hex(treeish_name)); - if (get_oid(rev->buf, gitmodules_oid) >= 0) - ret = 1; - - return ret; -} - -/* This does a lookup of a submodule configuration by name or by path - * (key) with on-demand reading of the appropriate .gitmodules from - * revisions. - */ -static const struct submodule *config_from(struct submodule_cache *cache, - const struct object_id *treeish_name, const char *key, - enum lookup_type lookup_type) -{ - struct strbuf rev = STRBUF_INIT; - unsigned long config_size; - char *config = NULL; - struct object_id oid; - enum object_type type; - const struct submodule *submodule = NULL; - struct parse_config_parameter parameter; - - /* - * If any parameter except the cache is a NULL pointer just - * return the first submodule. Can be used to check whether - * there are any submodules parsed. - */ - if (!treeish_name || !key) { - struct hashmap_iter iter; - struct submodule_entry *entry; - - entry = hashmap_iter_first(&cache->for_name, &iter); - if (!entry) - return NULL; - return entry->config; - } - - if (!gitmodule_oid_from_commit(treeish_name, &oid, &rev)) - goto out; - - switch (lookup_type) { - case lookup_name: - submodule = cache_lookup_name(cache, &oid, key); - break; - case lookup_path: - submodule = cache_lookup_path(cache, &oid, key); - break; - } - if (submodule) - goto out; - - config = read_object_file(&oid, &type, &config_size); - if (!config || type != OBJ_BLOB) - goto out; - - /* fill the submodule config into the cache */ - parameter.cache = cache; - parameter.treeish_name = treeish_name; - parameter.gitmodules_oid = &oid; - parameter.overwrite = 0; - git_config_from_mem(parse_config, CONFIG_ORIGIN_SUBMODULE_BLOB, rev.buf, - config, config_size, ¶meter, NULL); - strbuf_release(&rev); - free(config); - - switch (lookup_type) { - case lookup_name: - return cache_lookup_name(cache, &oid, key); - case lookup_path: - return cache_lookup_path(cache, &oid, key); - default: - return NULL; - } - -out: - strbuf_release(&rev); - free(config); - return submodule; -} - -static void submodule_cache_check_init(struct repository *repo) -{ - if (repo->submodule_cache && repo->submodule_cache->initialized) - return; - - if (!repo->submodule_cache) - repo->submodule_cache = submodule_cache_alloc(); - - submodule_cache_init(repo->submodule_cache); -} - -/* - * Note: This function is private for a reason, the '.gitmodules' file should - * not be used as as a mechanism to retrieve arbitrary configuration stored in - * the repository. - * - * Runs the provided config function on the '.gitmodules' file found in the - * working directory. - */ -static void config_from_gitmodules(config_fn_t fn, struct repository *repo, void *data) -{ - if (repo->worktree) { - struct git_config_source config_source = { 0 }; - const struct config_options opts = { 0 }; - struct object_id oid; - char *file; - char *oidstr = NULL; - - file = repo_worktree_path(repo, GITMODULES_FILE); - if (file_exists(file)) { - config_source.file = file; - } else if (repo_get_oid(repo, GITMODULES_INDEX, &oid) >= 0 || - repo_get_oid(repo, GITMODULES_HEAD, &oid) >= 0) { - config_source.blob = oidstr = xstrdup(oid_to_hex(&oid)); - if (repo != the_repository) - add_to_alternates_memory(repo->objects->odb->path); - } else { - goto out; - } - - config_with_options(fn, data, &config_source, &opts); - -out: - free(oidstr); - free(file); - } -} - -static int gitmodules_cb(const char *var, const char *value, void *data) -{ - struct repository *repo = data; - struct parse_config_parameter parameter; - - parameter.cache = repo->submodule_cache; - parameter.treeish_name = NULL; - parameter.gitmodules_oid = &null_oid; - parameter.overwrite = 1; - - return parse_config(var, value, ¶meter); -} - -void repo_read_gitmodules(struct repository *repo) -{ - submodule_cache_check_init(repo); - - if (repo_read_index(repo) < 0) - return; - - if (!is_gitmodules_unmerged(repo->index)) - config_from_gitmodules(gitmodules_cb, repo, repo); - - repo->submodule_cache->gitmodules_read = 1; -} - -void gitmodules_config_oid(const struct object_id *commit_oid) -{ - struct strbuf rev = STRBUF_INIT; - struct object_id oid; - - submodule_cache_check_init(the_repository); - - if (gitmodule_oid_from_commit(commit_oid, &oid, &rev)) { - git_config_from_blob_oid(gitmodules_cb, rev.buf, - &oid, the_repository); - } - strbuf_release(&rev); - - the_repository->submodule_cache->gitmodules_read = 1; -} - -static void gitmodules_read_check(struct repository *repo) -{ - submodule_cache_check_init(repo); - - /* read the repo's .gitmodules file if it hasn't been already */ - if (!repo->submodule_cache->gitmodules_read) - repo_read_gitmodules(repo); -} - -const struct submodule *submodule_from_name(struct repository *r, - const struct object_id *treeish_name, - const char *name) -{ - gitmodules_read_check(r); - return config_from(r->submodule_cache, treeish_name, name, lookup_name); -} - -const struct submodule *submodule_from_path(struct repository *r, - const struct object_id *treeish_name, - const char *path) -{ - gitmodules_read_check(r); - return config_from(r->submodule_cache, treeish_name, path, lookup_path); -} - -void submodule_free(struct repository *r) -{ - if (r->submodule_cache) - submodule_cache_clear(r->submodule_cache); -} - -static int config_print_callback(const char *var, const char *value, void *cb_data) -{ - char *wanted_key = cb_data; - - if (!strcmp(wanted_key, var)) - printf("%s\n", value); - - return 0; -} - -int print_config_from_gitmodules(struct repository *repo, const char *key) -{ - int ret; - char *store_key; - - ret = git_config_parse_key(key, &store_key, NULL); - if (ret < 0) - return CONFIG_INVALID_KEY; - - config_from_gitmodules(config_print_callback, repo, store_key); - - free(store_key); - return 0; -} - -int config_set_in_gitmodules_file_gently(const char *key, const char *value) -{ - int ret; - - ret = git_config_set_in_file_gently(GITMODULES_FILE, key, value); - if (ret < 0) - /* Maybe the user already did that, don't error out here */ - warning(_("Could not update .gitmodules entry %s"), key); - - return ret; -} - -struct fetch_config { - int *max_children; - int *recurse_submodules; -}; - -static int gitmodules_fetch_config(const char *var, const char *value, void *cb) -{ - struct fetch_config *config = cb; - if (!strcmp(var, "submodule.fetchjobs")) { - *(config->max_children) = parse_submodule_fetchjobs(var, value); - return 0; - } else if (!strcmp(var, "fetch.recursesubmodules")) { - *(config->recurse_submodules) = parse_fetch_recurse_submodules_arg(var, value); - return 0; - } - - return 0; -} - -void fetch_config_from_gitmodules(int *max_children, int *recurse_submodules) -{ - struct fetch_config config = { - .max_children = max_children, - .recurse_submodules = recurse_submodules - }; - config_from_gitmodules(gitmodules_fetch_config, the_repository, &config); -} - -static int gitmodules_update_clone_config(const char *var, const char *value, - void *cb) -{ - int *max_jobs = cb; - if (!strcmp(var, "submodule.fetchjobs")) - *max_jobs = parse_submodule_fetchjobs(var, value); - return 0; -} - -void update_clone_config_from_gitmodules(int *max_jobs) -{ - config_from_gitmodules(gitmodules_update_clone_config, the_repository, &max_jobs); -} |