7 static const char show_ref_usage[] = "git show-ref [-q|--quiet] [--verify] [-h|--head] [-d|--dereference] [-s|--hash[=<length>]] [--abbrev[=<length>]] [--tags] [--heads] [--] [pattern*] | --filter-invalid < ref-list";
9 static int deref_tags = 0, show_head = 0, tags_only = 0, heads_only = 0,
10 found_match = 0, verify = 0, quiet = 0, hash_only = 0, abbrev = 0;
11 static const char **pattern;
13 static int show_ref(const char *refname, const unsigned char *sha1, int flag, void *cbdata)
17 unsigned char peeled[20];
19 if (tags_only || heads_only) {
22 match = heads_only && !strncmp(refname, "refs/heads/", 11);
23 match |= tags_only && !strncmp(refname, "refs/tags/", 10);
28 int reflen = strlen(refname);
29 const char **p = pattern, *m;
30 while ((m = *p++) != NULL) {
34 if (memcmp(m, refname + reflen - len, len))
38 /* "--verify" requires an exact match */
41 if (refname[reflen - len - 1] == '/')
50 /* This changes the semantics slightly that even under quiet we
51 * detect and return error if the repository is corrupt and
52 * ref points at a nonexistent object.
54 if (!has_sha1_file(sha1))
55 die("git-show-ref: bad ref %s (%s)", refname,
61 hex = find_unique_abbrev(sha1, abbrev);
65 printf("%s %s\n", hex, refname);
70 if ((flag & REF_ISPACKED) && !peel_ref(refname, peeled)) {
71 if (!is_null_sha1(peeled)) {
72 hex = find_unique_abbrev(peeled, abbrev);
73 printf("%s %s^{}\n", hex, refname);
77 obj = parse_object(sha1);
79 die("git-show-ref: bad ref %s (%s)", refname,
81 if (obj->type == OBJ_TAG) {
82 obj = deref_tag(obj, refname, 0);
83 hex = find_unique_abbrev(obj->sha1, abbrev);
84 printf("%s %s^{}\n", hex, refname);
90 static int add_existing(const char *refname, const unsigned char *sha1, int flag, void *cbdata)
92 struct path_list *list = (struct path_list *)cbdata;
93 path_list_insert(refname, list);
98 * read "^(?:<anything>\s)?<refname>(?:\^\{\})?$" from the standard input,
100 * (1) strip "^{}" at the end of line if any;
101 * (2) ignore if match is provided and does not head-match refname;
102 * (3) warn if refname is not a well-formed refname and skip;
103 * (4) ignore if refname is a ref that exists in the local repository;
104 * (5) otherwise output the line.
106 static int exclude_existing(const char *match)
108 static struct path_list existing_refs = { NULL, 0, 0, 0 };
110 int matchlen = match ? strlen(match) : 0;
112 for_each_ref(add_existing, &existing_refs);
113 while (fgets(buf, sizeof(buf), stdin)) {
114 int len = strlen(buf);
116 if (len > 0 && buf[len - 1] == '\n')
118 if (!strcmp(buf + len - 3, "^{}")) {
122 for (ref = buf + len; buf < ref; ref--)
123 if (isspace(ref[-1]))
126 int reflen = buf + len - ref;
127 if (reflen < matchlen)
129 if (strncmp(ref, match, matchlen))
132 if (check_ref_format(ref)) {
133 fprintf(stderr, "warning: ref '%s' ignored\n", ref);
136 if (!path_list_has_path(&existing_refs, ref)) {
143 int cmd_show_ref(int argc, const char **argv, const char *prefix)
147 for (i = 1; i < argc; i++) {
148 const char *arg = argv[i];
153 if (!strcmp(arg, "--")) {
154 pattern = argv + i + 1;
159 if (!strcmp(arg, "-q") || !strcmp(arg, "--quiet")) {
163 if (!strcmp(arg, "-h") || !strcmp(arg, "--head")) {
167 if (!strcmp(arg, "-d") || !strcmp(arg, "--dereference")) {
171 if (!strcmp(arg, "-s") || !strcmp(arg, "--hash")) {
175 if (!strncmp(arg, "--hash=", 7) ||
176 (!strncmp(arg, "--abbrev", 8) &&
177 (arg[8] == '=' || arg[8] == '\0'))) {
178 if (arg[3] != 'h' && !arg[8])
180 abbrev = DEFAULT_ABBREV;
182 /* --hash= or --abbrev= */
190 abbrev = strtoul(arg, &end, 10);
191 if (*end || abbrev > 40)
192 usage(show_ref_usage);
193 if (abbrev < MINIMUM_ABBREV)
194 abbrev = MINIMUM_ABBREV;
198 if (!strcmp(arg, "--verify")) {
202 if (!strcmp(arg, "--tags")) {
206 if (!strcmp(arg, "--heads")) {
210 if (!strcmp(arg, "--exclude-existing"))
211 return exclude_existing(NULL);
212 if (!strncmp(arg, "--exclude-existing=", 19))
213 return exclude_existing(arg + 19);
214 usage(show_ref_usage);
218 unsigned char sha1[20];
221 if (resolve_ref(*pattern, sha1, 1, NULL)) {
224 sha1_to_hex(sha1), *pattern);
227 die("'%s' - not a valid ref", *pattern);
236 head_ref(show_ref, NULL);
237 for_each_ref(show_ref, NULL);
239 if (verify && !quiet)