diff options
Diffstat (limited to 'refs.c')
| -rw-r--r-- | refs.c | 123 |
1 files changed, 108 insertions, 15 deletions
@@ -3,6 +3,7 @@ #include "object.h" #include "tag.h" #include "dir.h" +#include "string-list.h" /* * Make sure "ref" is something reasonable to have under ".git/refs/"; @@ -333,14 +334,12 @@ struct string_slice { static int ref_entry_cmp_sslice(const void *key_, const void *ent_) { - struct string_slice *key = (struct string_slice *)key_; - struct ref_entry *ent = *(struct ref_entry **)ent_; - int entlen = strlen(ent->name); - int cmplen = key->len < entlen ? key->len : entlen; - int cmp = memcmp(key->str, ent->name, cmplen); + const struct string_slice *key = key_; + const struct ref_entry *ent = *(const struct ref_entry * const *)ent_; + int cmp = strncmp(key->str, ent->name, key->len); if (cmp) return cmp; - return key->len - entlen; + return '\0' - (unsigned char)ent->name[key->len]; } /* @@ -804,11 +803,38 @@ static const char *parse_ref_line(char *line, unsigned char *sha1) return line; } +/* + * Read f, which is a packed-refs file, into dir. + * + * A comment line of the form "# pack-refs with: " may contain zero or + * more traits. We interpret the traits as follows: + * + * No traits: + * + * Probably no references are peeled. But if the file contains a + * peeled value for a reference, we will use it. + * + * peeled: + * + * References under "refs/tags/", if they *can* be peeled, *are* + * peeled in this file. References outside of "refs/tags/" are + * probably not peeled even if they could have been, but if we find + * a peeled value for such a reference we will use it. + * + * fully-peeled: + * + * All references in the file that can be peeled are peeled. + * Inversely (and this is more important), any references in the + * file for which no peeled value is recorded is not peelable. This + * trait should typically be written alongside "peeled" for + * compatibility with older clients, but we do not require it + * (i.e., "peeled" is a no-op if "fully-peeled" is set). + */ static void read_packed_refs(FILE *f, struct ref_dir *dir) { struct ref_entry *last = NULL; char refline[PATH_MAX]; - int flag = REF_ISPACKED; + enum { PEELED_NONE, PEELED_TAGS, PEELED_FULLY } peeled = PEELED_NONE; while (fgets(refline, sizeof(refline), f)) { unsigned char sha1[20]; @@ -817,15 +843,20 @@ static void read_packed_refs(FILE *f, struct ref_dir *dir) if (!strncmp(refline, header, sizeof(header)-1)) { const char *traits = refline + sizeof(header) - 1; - if (strstr(traits, " peeled ")) - flag |= REF_KNOWS_PEELED; + if (strstr(traits, " fully-peeled ")) + peeled = PEELED_FULLY; + else if (strstr(traits, " peeled ")) + peeled = PEELED_TAGS; /* perhaps other traits later as well */ continue; } refname = parse_ref_line(refline, sha1); if (refname) { - last = create_ref_entry(refname, sha1, flag, 1); + last = create_ref_entry(refname, sha1, REF_ISPACKED, 1); + if (peeled == PEELED_FULLY || + (peeled == PEELED_TAGS && !prefixcmp(refname, "refs/tags/"))) + last->flag |= REF_KNOWS_PEELED; add_ref(dir, last); continue; } @@ -833,8 +864,15 @@ static void read_packed_refs(FILE *f, struct ref_dir *dir) refline[0] == '^' && strlen(refline) == 42 && refline[41] == '\n' && - !get_sha1_hex(refline + 1, sha1)) + !get_sha1_hex(refline + 1, sha1)) { hashcpy(last->u.value.peeled, sha1); + /* + * Regardless of what the file header said, + * we definitely know the value of *this* + * reference: + */ + last->flag |= REF_KNOWS_PEELED; + } } } @@ -1202,6 +1240,8 @@ int peel_ref(const char *refname, unsigned char *sha1) if (current_ref && (current_ref->name == refname || !strcmp(current_ref->name, refname))) { if (current_ref->flag & REF_KNOWS_PEELED) { + if (is_null_sha1(current_ref->u.value.peeled)) + return -1; hashcpy(sha1, current_ref->u.value.peeled); return 0; } @@ -1223,9 +1263,16 @@ int peel_ref(const char *refname, unsigned char *sha1) } fallback: - o = parse_object(base); - if (o && o->type == OBJ_TAG) { - o = deref_tag(o, refname, 0); + o = lookup_unknown_object(base); + if (o->type == OBJ_NONE) { + int type = sha1_object_info(base, NULL); + if (type < 0) + return -1; + o->type = type; + } + + if (o->type == OBJ_TAG) { + o = deref_tag_noverify(o); if (o) { hashcpy(sha1, o->sha1); return 0; @@ -1735,7 +1782,8 @@ static struct lock_file packlock; static int repack_without_ref(const char *refname) { struct repack_without_ref_sb data; - struct ref_dir *packed = get_packed_refs(get_ref_cache(NULL)); + struct ref_cache *refs = get_ref_cache(NULL); + struct ref_dir *packed = get_packed_refs(refs); if (find_ref(packed, refname) == NULL) return 0; data.refname = refname; @@ -1744,6 +1792,8 @@ static int repack_without_ref(const char *refname) unable_to_lock_error(git_path("packed-refs"), errno); return error("cannot delete '%s' from packed refs", refname); } + clear_packed_ref_cache(refs); + packed = get_packed_refs(refs); do_for_each_ref_in_dir(packed, 0, "", repack_without_ref_fn, 0, 0, &data); return commit_lock_file(&packlock); } @@ -2544,3 +2594,46 @@ char *shorten_unambiguous_ref(const char *refname, int strict) free(short_name); return xstrdup(refname); } + +static struct string_list *hide_refs; + +int parse_hide_refs_config(const char *var, const char *value, const char *section) +{ + if (!strcmp("transfer.hiderefs", var) || + /* NEEDSWORK: use parse_config_key() once both are merged */ + (!prefixcmp(var, section) && var[strlen(section)] == '.' && + !strcmp(var + strlen(section), ".hiderefs"))) { + char *ref; + int len; + + if (!value) + return config_error_nonbool(var); + ref = xstrdup(value); + len = strlen(ref); + while (len && ref[len - 1] == '/') + ref[--len] = '\0'; + if (!hide_refs) { + hide_refs = xcalloc(1, sizeof(*hide_refs)); + hide_refs->strdup_strings = 1; + } + string_list_append(hide_refs, ref); + } + return 0; +} + +int ref_is_hidden(const char *refname) +{ + struct string_list_item *item; + + if (!hide_refs) + return 0; + for_each_string_list_item(item, hide_refs) { + int len; + if (prefixcmp(refname, item->string)) + continue; + len = strlen(item->string); + if (!refname[len] || refname[len] == '/') + return 1; + } + return 0; +} |