Remove deprecated OPTION_BOOLEAN for parsing arguments
[git/git.git] / builtin / show-ref.c
1 #include "builtin.h"
2 #include "cache.h"
3 #include "refs.h"
4 #include "object.h"
5 #include "tag.h"
6 #include "string-list.h"
7 #include "parse-options.h"
8
9 static const char * const show_ref_usage[] = {
10 N_("git show-ref [-q|--quiet] [--verify] [--head] [-d|--dereference] [-s|--hash[=<n>]] [--abbrev[=<n>]] [--tags] [--heads] [--] [pattern*] "),
11 N_("git show-ref --exclude-existing[=pattern] < ref-list"),
12 NULL
13 };
14
15 static int deref_tags, show_head, tags_only, heads_only, found_match, verify,
16 quiet, hash_only, abbrev, exclude_arg;
17 static const char **pattern;
18 static const char *exclude_existing_arg;
19
20 static void show_one(const char *refname, const unsigned char *sha1)
21 {
22 const char *hex = find_unique_abbrev(sha1, abbrev);
23 if (hash_only)
24 printf("%s\n", hex);
25 else
26 printf("%s %s\n", hex, refname);
27 }
28
29 static int show_ref(const char *refname, const unsigned char *sha1, int flag, void *cbdata)
30 {
31 const char *hex;
32 unsigned char peeled[20];
33
34 if (show_head && !strcmp(refname, "HEAD"))
35 goto match;
36
37 if (tags_only || heads_only) {
38 int match;
39
40 match = heads_only && !prefixcmp(refname, "refs/heads/");
41 match |= tags_only && !prefixcmp(refname, "refs/tags/");
42 if (!match)
43 return 0;
44 }
45 if (pattern) {
46 int reflen = strlen(refname);
47 const char **p = pattern, *m;
48 while ((m = *p++) != NULL) {
49 int len = strlen(m);
50 if (len > reflen)
51 continue;
52 if (memcmp(m, refname + reflen - len, len))
53 continue;
54 if (len == reflen)
55 goto match;
56 /* "--verify" requires an exact match */
57 if (verify)
58 continue;
59 if (refname[reflen - len - 1] == '/')
60 goto match;
61 }
62 return 0;
63 }
64
65 match:
66 found_match++;
67
68 /* This changes the semantics slightly that even under quiet we
69 * detect and return error if the repository is corrupt and
70 * ref points at a nonexistent object.
71 */
72 if (!has_sha1_file(sha1))
73 die("git show-ref: bad ref %s (%s)", refname,
74 sha1_to_hex(sha1));
75
76 if (quiet)
77 return 0;
78
79 show_one(refname, sha1);
80
81 if (!deref_tags)
82 return 0;
83
84 if (!peel_ref(refname, peeled)) {
85 hex = find_unique_abbrev(peeled, abbrev);
86 printf("%s %s^{}\n", hex, refname);
87 }
88 return 0;
89 }
90
91 static int add_existing(const char *refname, const unsigned char *sha1, int flag, void *cbdata)
92 {
93 struct string_list *list = (struct string_list *)cbdata;
94 string_list_insert(list, refname);
95 return 0;
96 }
97
98 /*
99 * read "^(?:<anything>\s)?<refname>(?:\^\{\})?$" from the standard input,
100 * and
101 * (1) strip "^{}" at the end of line if any;
102 * (2) ignore if match is provided and does not head-match refname;
103 * (3) warn if refname is not a well-formed refname and skip;
104 * (4) ignore if refname is a ref that exists in the local repository;
105 * (5) otherwise output the line.
106 */
107 static int exclude_existing(const char *match)
108 {
109 static struct string_list existing_refs = STRING_LIST_INIT_DUP;
110 char buf[1024];
111 int matchlen = match ? strlen(match) : 0;
112
113 for_each_ref(add_existing, &existing_refs);
114 while (fgets(buf, sizeof(buf), stdin)) {
115 char *ref;
116 int len = strlen(buf);
117
118 if (len > 0 && buf[len - 1] == '\n')
119 buf[--len] = '\0';
120 if (3 <= len && !strcmp(buf + len - 3, "^{}")) {
121 len -= 3;
122 buf[len] = '\0';
123 }
124 for (ref = buf + len; buf < ref; ref--)
125 if (isspace(ref[-1]))
126 break;
127 if (match) {
128 int reflen = buf + len - ref;
129 if (reflen < matchlen)
130 continue;
131 if (strncmp(ref, match, matchlen))
132 continue;
133 }
134 if (check_refname_format(ref, 0)) {
135 warning("ref '%s' ignored", ref);
136 continue;
137 }
138 if (!string_list_has_string(&existing_refs, ref)) {
139 printf("%s\n", buf);
140 }
141 }
142 return 0;
143 }
144
145 static int hash_callback(const struct option *opt, const char *arg, int unset)
146 {
147 hash_only = 1;
148 /* Use full length SHA1 if no argument */
149 if (!arg)
150 return 0;
151 return parse_opt_abbrev_cb(opt, arg, unset);
152 }
153
154 static int exclude_existing_callback(const struct option *opt, const char *arg,
155 int unset)
156 {
157 exclude_arg = 1;
158 *(const char **)opt->value = arg;
159 return 0;
160 }
161
162 static int help_callback(const struct option *opt, const char *arg, int unset)
163 {
164 return -1;
165 }
166
167 static const struct option show_ref_options[] = {
168 OPT_BOOLEAN(0, "tags", &tags_only, N_("only show tags (can be combined with heads)")),
169 OPT_BOOLEAN(0, "heads", &heads_only, N_("only show heads (can be combined with tags)")),
170 OPT_BOOLEAN(0, "verify", &verify, N_("stricter reference checking, "
171 "requires exact ref path")),
172 OPT_HIDDEN_BOOL('h', NULL, &show_head,
173 N_("show the HEAD reference, even if it would be filtered out")),
174 OPT_BOOLEAN(0, "head", &show_head,
175 N_("show the HEAD reference, even if it would be filtered out")),
176 OPT_BOOLEAN('d', "dereference", &deref_tags,
177 N_("dereference tags into object IDs")),
178 { OPTION_CALLBACK, 's', "hash", &abbrev, N_("n"),
179 N_("only show SHA1 hash using <n> digits"),
180 PARSE_OPT_OPTARG, &hash_callback },
181 OPT__ABBREV(&abbrev),
182 OPT__QUIET(&quiet,
183 N_("do not print results to stdout (useful with --verify)")),
184 { OPTION_CALLBACK, 0, "exclude-existing", &exclude_existing_arg,
185 N_("pattern"), N_("show refs from stdin that aren't in local repository"),
186 PARSE_OPT_OPTARG | PARSE_OPT_NONEG, exclude_existing_callback },
187 { OPTION_CALLBACK, 0, "help-all", NULL, NULL, N_("show usage"),
188 PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback },
189 OPT_END()
190 };
191
192 int cmd_show_ref(int argc, const char **argv, const char *prefix)
193 {
194 if (argc == 2 && !strcmp(argv[1], "-h"))
195 usage_with_options(show_ref_usage, show_ref_options);
196
197 argc = parse_options(argc, argv, prefix, show_ref_options,
198 show_ref_usage, PARSE_OPT_NO_INTERNAL_HELP);
199
200 if (exclude_arg)
201 return exclude_existing(exclude_existing_arg);
202
203 pattern = argv;
204 if (!*pattern)
205 pattern = NULL;
206
207 if (verify) {
208 if (!pattern)
209 die("--verify requires a reference");
210 while (*pattern) {
211 unsigned char sha1[20];
212
213 if (!prefixcmp(*pattern, "refs/") &&
214 !read_ref(*pattern, sha1)) {
215 if (!quiet)
216 show_one(*pattern, sha1);
217 }
218 else if (!quiet)
219 die("'%s' - not a valid ref", *pattern);
220 else
221 return 1;
222 pattern++;
223 }
224 return 0;
225 }
226
227 if (show_head)
228 head_ref(show_ref, NULL);
229 for_each_ref(show_ref, NULL);
230 if (!found_match) {
231 if (verify && !quiet)
232 die("No match");
233 return 1;
234 }
235 return 0;
236 }