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Commit | Line | Data |
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baffc0e7 | 1 | #include "builtin.h" |
358ddb62 LT |
2 | #include "cache.h" |
3 | #include "refs.h" | |
4 | #include "object.h" | |
5 | #include "tag.h" | |
c455c87c | 6 | #include "string-list.h" |
69932bc6 | 7 | #include "parse-options.h" |
358ddb62 | 8 | |
69932bc6 | 9 | static const char * const show_ref_usage[] = { |
e62b3935 | 10 | "git show-ref [-q|--quiet] [--verify] [--head] [-d|--dereference] [-s|--hash[=<n>]] [--abbrev[=<n>]] [--tags] [--heads] [--] [pattern*] ", |
69932bc6 SB |
11 | "git show-ref --exclude-existing[=pattern] < ref-list", |
12 | NULL | |
13 | }; | |
358ddb62 | 14 | |
69932bc6 SB |
15 | static int deref_tags, show_head, tags_only, heads_only, found_match, verify, |
16 | quiet, hash_only, abbrev, exclude_arg; | |
358ddb62 | 17 | static const char **pattern; |
69932bc6 | 18 | static const char *exclude_existing_arg; |
358ddb62 | 19 | |
64fe031a JH |
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 | ||
eaf12a8c | 29 | static int show_ref(const char *refname, const unsigned char *sha1, int flag, void *cbdata) |
358ddb62 | 30 | { |
2eaf2224 | 31 | const char *hex; |
cf0adba7 | 32 | unsigned char peeled[20]; |
358ddb62 LT |
33 | |
34 | if (tags_only || heads_only) { | |
35 | int match; | |
36 | ||
cc44c765 JH |
37 | match = heads_only && !prefixcmp(refname, "refs/heads/"); |
38 | match |= tags_only && !prefixcmp(refname, "refs/tags/"); | |
358ddb62 LT |
39 | if (!match) |
40 | return 0; | |
41 | } | |
42 | if (pattern) { | |
43 | int reflen = strlen(refname); | |
44 | const char **p = pattern, *m; | |
45 | while ((m = *p++) != NULL) { | |
46 | int len = strlen(m); | |
47 | if (len > reflen) | |
48 | continue; | |
49 | if (memcmp(m, refname + reflen - len, len)) | |
50 | continue; | |
51 | if (len == reflen) | |
52 | goto match; | |
53 | /* "--verify" requires an exact match */ | |
54 | if (verify) | |
55 | continue; | |
56 | if (refname[reflen - len - 1] == '/') | |
57 | goto match; | |
58 | } | |
59 | return 0; | |
60 | } | |
61 | ||
62 | match: | |
63 | found_match++; | |
cf0adba7 JH |
64 | |
65 | /* This changes the semantics slightly that even under quiet we | |
66 | * detect and return error if the repository is corrupt and | |
67 | * ref points at a nonexistent object. | |
68 | */ | |
69 | if (!has_sha1_file(sha1)) | |
7e44c935 | 70 | die("git show-ref: bad ref %s (%s)", refname, |
cf0adba7 JH |
71 | sha1_to_hex(sha1)); |
72 | ||
358ddb62 LT |
73 | if (quiet) |
74 | return 0; | |
2eaf2224 | 75 | |
64fe031a | 76 | show_one(refname, sha1); |
cf0adba7 JH |
77 | |
78 | if (!deref_tags) | |
79 | return 0; | |
80 | ||
e6dbffa6 JK |
81 | if (!peel_ref(refname, peeled)) { |
82 | hex = find_unique_abbrev(peeled, abbrev); | |
83 | printf("%s %s^{}\n", hex, refname); | |
cf0adba7 | 84 | } |
358ddb62 LT |
85 | return 0; |
86 | } | |
87 | ||
ed9f7c95 JH |
88 | static int add_existing(const char *refname, const unsigned char *sha1, int flag, void *cbdata) |
89 | { | |
c455c87c | 90 | struct string_list *list = (struct string_list *)cbdata; |
78a395d3 | 91 | string_list_insert(list, refname); |
ed9f7c95 JH |
92 | return 0; |
93 | } | |
94 | ||
95 | /* | |
96 | * read "^(?:<anything>\s)?<refname>(?:\^\{\})?$" from the standard input, | |
97 | * and | |
98 | * (1) strip "^{}" at the end of line if any; | |
99 | * (2) ignore if match is provided and does not head-match refname; | |
100 | * (3) warn if refname is not a well-formed refname and skip; | |
101 | * (4) ignore if refname is a ref that exists in the local repository; | |
102 | * (5) otherwise output the line. | |
103 | */ | |
104 | static int exclude_existing(const char *match) | |
105 | { | |
183113a5 | 106 | static struct string_list existing_refs = STRING_LIST_INIT_NODUP; |
ed9f7c95 JH |
107 | char buf[1024]; |
108 | int matchlen = match ? strlen(match) : 0; | |
109 | ||
110 | for_each_ref(add_existing, &existing_refs); | |
111 | while (fgets(buf, sizeof(buf), stdin)) { | |
ed9f7c95 | 112 | char *ref; |
d8285af4 JH |
113 | int len = strlen(buf); |
114 | ||
ed9f7c95 JH |
115 | if (len > 0 && buf[len - 1] == '\n') |
116 | buf[--len] = '\0'; | |
d8285af4 | 117 | if (3 <= len && !strcmp(buf + len - 3, "^{}")) { |
ed9f7c95 JH |
118 | len -= 3; |
119 | buf[len] = '\0'; | |
120 | } | |
121 | for (ref = buf + len; buf < ref; ref--) | |
122 | if (isspace(ref[-1])) | |
123 | break; | |
124 | if (match) { | |
125 | int reflen = buf + len - ref; | |
126 | if (reflen < matchlen) | |
127 | continue; | |
128 | if (strncmp(ref, match, matchlen)) | |
129 | continue; | |
130 | } | |
8d9c5010 | 131 | if (check_refname_format(ref, 0)) { |
5620e77e | 132 | warning("ref '%s' ignored", ref); |
ed9f7c95 JH |
133 | continue; |
134 | } | |
c455c87c | 135 | if (!string_list_has_string(&existing_refs, ref)) { |
ed9f7c95 JH |
136 | printf("%s\n", buf); |
137 | } | |
138 | } | |
139 | return 0; | |
140 | } | |
141 | ||
69932bc6 SB |
142 | static int hash_callback(const struct option *opt, const char *arg, int unset) |
143 | { | |
144 | hash_only = 1; | |
145 | /* Use full length SHA1 if no argument */ | |
146 | if (!arg) | |
147 | return 0; | |
148 | return parse_opt_abbrev_cb(opt, arg, unset); | |
149 | } | |
150 | ||
151 | static int exclude_existing_callback(const struct option *opt, const char *arg, | |
152 | int unset) | |
153 | { | |
154 | exclude_arg = 1; | |
155 | *(const char **)opt->value = arg; | |
156 | return 0; | |
157 | } | |
158 | ||
159 | static int help_callback(const struct option *opt, const char *arg, int unset) | |
160 | { | |
161 | return -1; | |
162 | } | |
163 | ||
164 | static const struct option show_ref_options[] = { | |
165 | OPT_BOOLEAN(0, "tags", &tags_only, "only show tags (can be combined with heads)"), | |
166 | OPT_BOOLEAN(0, "heads", &heads_only, "only show heads (can be combined with tags)"), | |
167 | OPT_BOOLEAN(0, "verify", &verify, "stricter reference checking, " | |
168 | "requires exact ref path"), | |
e62b3935 JN |
169 | { OPTION_BOOLEAN, 'h', NULL, &show_head, NULL, |
170 | "show the HEAD reference", | |
171 | PARSE_OPT_NOARG | PARSE_OPT_HIDDEN }, | |
172 | OPT_BOOLEAN(0, "head", &show_head, "show the HEAD reference"), | |
69932bc6 SB |
173 | OPT_BOOLEAN('d', "dereference", &deref_tags, |
174 | "dereference tags into object IDs"), | |
175 | { OPTION_CALLBACK, 's', "hash", &abbrev, "n", | |
176 | "only show SHA1 hash using <n> digits", | |
177 | PARSE_OPT_OPTARG, &hash_callback }, | |
178 | OPT__ABBREV(&abbrev), | |
8c839683 JN |
179 | OPT__QUIET(&quiet, |
180 | "do not print results to stdout (useful with --verify)"), | |
69932bc6 SB |
181 | { OPTION_CALLBACK, 0, "exclude-existing", &exclude_existing_arg, |
182 | "pattern", "show refs from stdin that aren't in local repository", | |
183 | PARSE_OPT_OPTARG | PARSE_OPT_NONEG, exclude_existing_callback }, | |
184 | { OPTION_CALLBACK, 0, "help-all", NULL, NULL, "show usage", | |
185 | PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback }, | |
186 | OPT_END() | |
187 | }; | |
188 | ||
358ddb62 LT |
189 | int cmd_show_ref(int argc, const char **argv, const char *prefix) |
190 | { | |
e62b3935 JN |
191 | if (argc == 2 && !strcmp(argv[1], "-h")) |
192 | usage_with_options(show_ref_usage, show_ref_options); | |
193 | ||
69932bc6 SB |
194 | argc = parse_options(argc, argv, prefix, show_ref_options, |
195 | show_ref_usage, PARSE_OPT_NO_INTERNAL_HELP); | |
358ddb62 | 196 | |
69932bc6 SB |
197 | if (exclude_arg) |
198 | return exclude_existing(exclude_existing_arg); | |
199 | ||
200 | pattern = argv; | |
201 | if (!*pattern) | |
202 | pattern = NULL; | |
26cdd1e7 JH |
203 | |
204 | if (verify) { | |
8ab40a20 DL |
205 | if (!pattern) |
206 | die("--verify requires a reference"); | |
26cdd1e7 | 207 | while (*pattern) { |
8ab40a20 DL |
208 | unsigned char sha1[20]; |
209 | ||
cc44c765 | 210 | if (!prefixcmp(*pattern, "refs/") && |
c6893323 | 211 | !read_ref(*pattern, sha1)) { |
dd914299 | 212 | if (!quiet) |
64fe031a | 213 | show_one(*pattern, sha1); |
dd914299 | 214 | } |
26cdd1e7 JH |
215 | else if (!quiet) |
216 | die("'%s' - not a valid ref", *pattern); | |
217 | else | |
218 | return 1; | |
219 | pattern++; | |
220 | } | |
221 | return 0; | |
222 | } | |
223 | ||
358ddb62 | 224 | if (show_head) |
eaf12a8c JH |
225 | head_ref(show_ref, NULL); |
226 | for_each_ref(show_ref, NULL); | |
358ddb62 LT |
227 | if (!found_match) { |
228 | if (verify && !quiet) | |
229 | die("No match"); | |
230 | return 1; | |
231 | } | |
232 | return 0; | |
233 | } |