diff options
Diffstat (limited to 'refs.c')
| -rw-r--r-- | refs.c | 225 |
1 files changed, 171 insertions, 54 deletions
@@ -20,6 +20,7 @@ #include "repository.h" #include "sigchain.h" #include "date.h" +#include "commit.h" /* * List of all available backends @@ -56,6 +57,88 @@ static unsigned char refname_disposition[256] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 4, 4 }; +struct ref_namespace_info ref_namespace[] = { + [NAMESPACE_HEAD] = { + .ref = "HEAD", + .decoration = DECORATION_REF_HEAD, + .exact = 1, + }, + [NAMESPACE_BRANCHES] = { + .ref = "refs/heads/", + .decoration = DECORATION_REF_LOCAL, + }, + [NAMESPACE_TAGS] = { + .ref = "refs/tags/", + .decoration = DECORATION_REF_TAG, + }, + [NAMESPACE_REMOTE_REFS] = { + /* + * The default refspec for new remotes copies refs from + * refs/heads/ on the remote into refs/remotes/<remote>/. + * As such, "refs/remotes/" has special handling. + */ + .ref = "refs/remotes/", + .decoration = DECORATION_REF_REMOTE, + }, + [NAMESPACE_STASH] = { + /* + * The single ref "refs/stash" stores the latest stash. + * Older stashes can be found in the reflog. + */ + .ref = "refs/stash", + .exact = 1, + .decoration = DECORATION_REF_STASH, + }, + [NAMESPACE_REPLACE] = { + /* + * This namespace allows Git to act as if one object ID + * points to the content of another. Unlike the other + * ref namespaces, this one can be changed by the + * GIT_REPLACE_REF_BASE environment variable. This + * .namespace value will be overwritten in setup_git_env(). + */ + .ref = "refs/replace/", + .decoration = DECORATION_GRAFTED, + }, + [NAMESPACE_NOTES] = { + /* + * The refs/notes/commit ref points to the tip of a + * parallel commit history that adds metadata to commits + * in the normal history. This ref can be overwritten + * by the core.notesRef config variable or the + * GIT_NOTES_REFS environment variable. + */ + .ref = "refs/notes/commit", + .exact = 1, + }, + [NAMESPACE_PREFETCH] = { + /* + * Prefetch refs are written by the background 'fetch' + * maintenance task. It allows faster foreground fetches + * by advertising these previously-downloaded tips without + * updating refs/remotes/ without user intervention. + */ + .ref = "refs/prefetch/", + }, + [NAMESPACE_REWRITTEN] = { + /* + * Rewritten refs are used by the 'label' command in the + * sequencer. These are particularly useful during an + * interactive rebase that uses the 'merge' command. + */ + .ref = "refs/rewritten/", + }, +}; + +void update_ref_namespace(enum ref_namespace namespace, char *ref) +{ + struct ref_namespace_info *info = &ref_namespace[namespace]; + if (info->ref_updated) + free(info->ref); + info->ref = ref; + info->ref_updated = 1; +} + /* * Try to read one refname component from the front of refname. * Return the length of the component found, or -1 if the component is @@ -358,7 +441,8 @@ struct warn_if_dangling_data { const char *msg_fmt; }; -static int warn_if_dangling_symref(const char *refname, const struct object_id *oid, +static int warn_if_dangling_symref(const char *refname, + const struct object_id *oid UNUSED, int flags, void *cb_data) { struct warn_if_dangling_data *d = cb_data; @@ -455,11 +539,16 @@ void normalize_glob_ref(struct string_list_item *item, const char *prefix, if (*pattern == '/') BUG("pattern must not start with '/'"); - if (prefix) { + if (prefix) strbuf_addstr(&normalized_pattern, prefix); - } - else if (!starts_with(pattern, "refs/")) + else if (!starts_with(pattern, "refs/") && + strcmp(pattern, "HEAD")) strbuf_addstr(&normalized_pattern, "refs/"); + /* + * NEEDSWORK: Special case other symrefs such as REBASE_HEAD, + * MERGE_HEAD, etc. + */ + strbuf_addstr(&normalized_pattern, pattern); strbuf_strip_suffix(&normalized_pattern, "/"); @@ -722,7 +811,7 @@ int dwim_log(const char *str, int len, struct object_id *oid, char **log) return repo_dwim_log(the_repository, str, len, oid, log); } -static int is_per_worktree_ref(const char *refname) +int is_per_worktree_ref(const char *refname) { return starts_with(refname, "refs/worktree/") || starts_with(refname, "refs/bisect/") || @@ -738,37 +827,63 @@ static int is_pseudoref_syntax(const char *refname) return 0; } + /* + * HEAD is not a pseudoref, but it certainly uses the + * pseudoref syntax. + */ return 1; } -static int is_main_pseudoref_syntax(const char *refname) -{ - return skip_prefix(refname, "main-worktree/", &refname) && - *refname && - is_pseudoref_syntax(refname); +static int is_current_worktree_ref(const char *ref) { + return is_pseudoref_syntax(ref) || is_per_worktree_ref(ref); } -static int is_other_pseudoref_syntax(const char *refname) +enum ref_worktree_type parse_worktree_ref(const char *maybe_worktree_ref, + const char **worktree_name, int *worktree_name_length, + const char **bare_refname) { - if (!skip_prefix(refname, "worktrees/", &refname)) - return 0; - refname = strchr(refname, '/'); - if (!refname || !refname[1]) - return 0; - return is_pseudoref_syntax(refname + 1); -} + const char *name_dummy; + int name_length_dummy; + const char *ref_dummy; -enum ref_type ref_type(const char *refname) -{ - if (is_per_worktree_ref(refname)) - return REF_TYPE_PER_WORKTREE; - if (is_pseudoref_syntax(refname)) - return REF_TYPE_PSEUDOREF; - if (is_main_pseudoref_syntax(refname)) - return REF_TYPE_MAIN_PSEUDOREF; - if (is_other_pseudoref_syntax(refname)) - return REF_TYPE_OTHER_PSEUDOREF; - return REF_TYPE_NORMAL; + if (!worktree_name) + worktree_name = &name_dummy; + if (!worktree_name_length) + worktree_name_length = &name_length_dummy; + if (!bare_refname) + bare_refname = &ref_dummy; + + if (skip_prefix(maybe_worktree_ref, "worktrees/", bare_refname)) { + const char *slash = strchr(*bare_refname, '/'); + + *worktree_name = *bare_refname; + if (!slash) { + *worktree_name_length = strlen(*worktree_name); + + /* This is an error condition, and the caller tell because the bare_refname is "" */ + *bare_refname = *worktree_name + *worktree_name_length; + return REF_WORKTREE_OTHER; + } + + *worktree_name_length = slash - *bare_refname; + *bare_refname = slash + 1; + + if (is_current_worktree_ref(*bare_refname)) + return REF_WORKTREE_OTHER; + } + + *worktree_name = NULL; + *worktree_name_length = 0; + + if (skip_prefix(maybe_worktree_ref, "main-worktree/", bare_refname) + && is_current_worktree_ref(*bare_refname)) + return REF_WORKTREE_MAIN; + + *bare_refname = maybe_worktree_ref; + if (is_current_worktree_ref(maybe_worktree_ref)) + return REF_WORKTREE_CURRENT; + + return REF_WORKTREE_SHARED; } long get_files_ref_lock_timeout_ms(void) @@ -893,8 +1008,9 @@ static void set_read_ref_cutoffs(struct read_ref_at_cb *cb, } static int read_ref_at_ent(struct object_id *ooid, struct object_id *noid, - const char *email, timestamp_t timestamp, int tz, - const char *message, void *cb_data) + const char *email UNUSED, + timestamp_t timestamp, int tz, + const char *message, void *cb_data) { struct read_ref_at_cb *cb = cb_data; int reached_count; @@ -934,9 +1050,11 @@ static int read_ref_at_ent(struct object_id *ooid, struct object_id *noid, return cb->found_it; } -static int read_ref_at_ent_newest(struct object_id *ooid, struct object_id *noid, - const char *email, timestamp_t timestamp, - int tz, const char *message, void *cb_data) +static int read_ref_at_ent_newest(struct object_id *ooid UNUSED, + struct object_id *noid, + const char *email UNUSED, + timestamp_t timestamp, int tz, + const char *message, void *cb_data) { struct read_ref_at_cb *cb = cb_data; @@ -947,8 +1065,9 @@ static int read_ref_at_ent_newest(struct object_id *ooid, struct object_id *noid } static int read_ref_at_ent_oldest(struct object_id *ooid, struct object_id *noid, - const char *email, timestamp_t timestamp, - int tz, const char *message, void *cb_data) + const char *email UNUSED, + timestamp_t timestamp, int tz, + const char *message, void *cb_data) { struct read_ref_at_cb *cb = cb_data; @@ -1109,8 +1228,10 @@ int ref_transaction_create(struct ref_transaction *transaction, unsigned int flags, const char *msg, struct strbuf *err) { - if (!new_oid || is_null_oid(new_oid)) - BUG("create called without valid new_oid"); + if (!new_oid || is_null_oid(new_oid)) { + strbuf_addf(err, "'%s' has a null OID", refname); + return 1; + } return ref_transaction_update(transaction, refname, new_oid, null_oid(), flags, msg, err); } @@ -1293,9 +1414,8 @@ char *shorten_unambiguous_ref(const char *refname, int strict) refname, strict); } -static struct string_list *hide_refs; - -int parse_hide_refs_config(const char *var, const char *value, const char *section) +int parse_hide_refs_config(const char *var, const char *value, const char *section, + struct string_list *hide_refs) { const char *key; if (!strcmp("transfer.hiderefs", var) || @@ -1310,21 +1430,16 @@ int parse_hide_refs_config(const char *var, const char *value, const char *secti len = strlen(ref); while (len && ref[len - 1] == '/') ref[--len] = '\0'; - if (!hide_refs) { - CALLOC_ARRAY(hide_refs, 1); - hide_refs->strdup_strings = 1; - } - string_list_append(hide_refs, ref); + string_list_append_nodup(hide_refs, ref); } return 0; } -int ref_is_hidden(const char *refname, const char *refname_full) +int ref_is_hidden(const char *refname, const char *refname_full, + const struct string_list *hide_refs) { int i; - if (!hide_refs) - return 0; for (i = hide_refs->nr - 1; i >= 0; i--) { const char *match = hide_refs->items[i].string; const char *subject; @@ -1522,6 +1637,7 @@ int refs_for_each_fullref_in(struct ref_store *refs, const char *prefix, int for_each_replace_ref(struct repository *r, each_repo_ref_fn fn, void *cb_data) { + const char *git_replace_ref_base = ref_namespace[NAMESPACE_REPLACE].ref; return do_for_each_repo_ref(r, git_replace_ref_base, fn, strlen(git_replace_ref_base), DO_FOR_EACH_INCLUDE_BROKEN, cb_data); @@ -1607,9 +1723,10 @@ static void find_longest_prefixes(struct string_list *out, strbuf_release(&prefix); } -int for_each_fullref_in_prefixes(const char *namespace, - const char **patterns, - each_ref_fn fn, void *cb_data) +int refs_for_each_fullref_in_prefixes(struct ref_store *ref_store, + const char *namespace, + const char **patterns, + each_ref_fn fn, void *cb_data) { struct string_list prefixes = STRING_LIST_INIT_DUP; struct string_list_item *prefix; @@ -1624,7 +1741,7 @@ int for_each_fullref_in_prefixes(const char *namespace, for_each_string_list_item(prefix, &prefixes) { strbuf_addstr(&buf, prefix->string); - ret = for_each_fullref_in(buf.buf, fn, cb_data); + ret = refs_for_each_fullref_in(ref_store, buf.buf, fn, cb_data); if (ret) break; strbuf_setlen(&buf, namespace_len); @@ -1808,7 +1925,7 @@ struct ref_store_hash_entry char name[FLEX_ARRAY]; }; -static int ref_store_hash_cmp(const void *unused_cmp_data, +static int ref_store_hash_cmp(const void *cmp_data UNUSED, const struct hashmap_entry *eptr, const struct hashmap_entry *entry_or_key, const void *keydata) |