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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 LT |
30 | { |
31 | struct object *obj; | |
2eaf2224 | 32 | const char *hex; |
cf0adba7 | 33 | unsigned char peeled[20]; |
358ddb62 LT |
34 | |
35 | if (tags_only || heads_only) { | |
36 | int match; | |
37 | ||
cc44c765 JH |
38 | match = heads_only && !prefixcmp(refname, "refs/heads/"); |
39 | match |= tags_only && !prefixcmp(refname, "refs/tags/"); | |
358ddb62 LT |
40 | if (!match) |
41 | return 0; | |
42 | } | |
43 | if (pattern) { | |
44 | int reflen = strlen(refname); | |
45 | const char **p = pattern, *m; | |
46 | while ((m = *p++) != NULL) { | |
47 | int len = strlen(m); | |
48 | if (len > reflen) | |
49 | continue; | |
50 | if (memcmp(m, refname + reflen - len, len)) | |
51 | continue; | |
52 | if (len == reflen) | |
53 | goto match; | |
54 | /* "--verify" requires an exact match */ | |
55 | if (verify) | |
56 | continue; | |
57 | if (refname[reflen - len - 1] == '/') | |
58 | goto match; | |
59 | } | |
60 | return 0; | |
61 | } | |
62 | ||
63 | match: | |
64 | found_match++; | |
cf0adba7 JH |
65 | |
66 | /* This changes the semantics slightly that even under quiet we | |
67 | * detect and return error if the repository is corrupt and | |
68 | * ref points at a nonexistent object. | |
69 | */ | |
70 | if (!has_sha1_file(sha1)) | |
7e44c935 | 71 | die("git show-ref: bad ref %s (%s)", refname, |
cf0adba7 JH |
72 | sha1_to_hex(sha1)); |
73 | ||
358ddb62 LT |
74 | if (quiet) |
75 | return 0; | |
2eaf2224 | 76 | |
64fe031a | 77 | show_one(refname, sha1); |
cf0adba7 JH |
78 | |
79 | if (!deref_tags) | |
80 | return 0; | |
81 | ||
82 | if ((flag & REF_ISPACKED) && !peel_ref(refname, peeled)) { | |
f4204ab9 JH |
83 | if (!is_null_sha1(peeled)) { |
84 | hex = find_unique_abbrev(peeled, abbrev); | |
85 | printf("%s %s^{}\n", hex, refname); | |
86 | } | |
358ddb62 | 87 | } |
cf0adba7 JH |
88 | else { |
89 | obj = parse_object(sha1); | |
90 | if (!obj) | |
7e44c935 | 91 | die("git show-ref: bad ref %s (%s)", refname, |
cf0adba7 JH |
92 | sha1_to_hex(sha1)); |
93 | if (obj->type == OBJ_TAG) { | |
94 | obj = deref_tag(obj, refname, 0); | |
affeef12 | 95 | if (!obj) |
7e44c935 | 96 | die("git show-ref: bad tag at ref %s (%s)", refname, |
affeef12 | 97 | sha1_to_hex(sha1)); |
cf0adba7 JH |
98 | hex = find_unique_abbrev(obj->sha1, abbrev); |
99 | printf("%s %s^{}\n", hex, refname); | |
100 | } | |
101 | } | |
358ddb62 LT |
102 | return 0; |
103 | } | |
104 | ||
ed9f7c95 JH |
105 | static int add_existing(const char *refname, const unsigned char *sha1, int flag, void *cbdata) |
106 | { | |
c455c87c JS |
107 | struct string_list *list = (struct string_list *)cbdata; |
108 | string_list_insert(refname, list); | |
ed9f7c95 JH |
109 | return 0; |
110 | } | |
111 | ||
112 | /* | |
113 | * read "^(?:<anything>\s)?<refname>(?:\^\{\})?$" from the standard input, | |
114 | * and | |
115 | * (1) strip "^{}" at the end of line if any; | |
116 | * (2) ignore if match is provided and does not head-match refname; | |
117 | * (3) warn if refname is not a well-formed refname and skip; | |
118 | * (4) ignore if refname is a ref that exists in the local repository; | |
119 | * (5) otherwise output the line. | |
120 | */ | |
121 | static int exclude_existing(const char *match) | |
122 | { | |
c455c87c | 123 | static struct string_list existing_refs = { NULL, 0, 0, 0 }; |
ed9f7c95 JH |
124 | char buf[1024]; |
125 | int matchlen = match ? strlen(match) : 0; | |
126 | ||
127 | for_each_ref(add_existing, &existing_refs); | |
128 | while (fgets(buf, sizeof(buf), stdin)) { | |
ed9f7c95 | 129 | char *ref; |
d8285af4 JH |
130 | int len = strlen(buf); |
131 | ||
ed9f7c95 JH |
132 | if (len > 0 && buf[len - 1] == '\n') |
133 | buf[--len] = '\0'; | |
d8285af4 | 134 | if (3 <= len && !strcmp(buf + len - 3, "^{}")) { |
ed9f7c95 JH |
135 | len -= 3; |
136 | buf[len] = '\0'; | |
137 | } | |
138 | for (ref = buf + len; buf < ref; ref--) | |
139 | if (isspace(ref[-1])) | |
140 | break; | |
141 | if (match) { | |
142 | int reflen = buf + len - ref; | |
143 | if (reflen < matchlen) | |
144 | continue; | |
145 | if (strncmp(ref, match, matchlen)) | |
146 | continue; | |
147 | } | |
148 | if (check_ref_format(ref)) { | |
5620e77e | 149 | warning("ref '%s' ignored", ref); |
ed9f7c95 JH |
150 | continue; |
151 | } | |
c455c87c | 152 | if (!string_list_has_string(&existing_refs, ref)) { |
ed9f7c95 JH |
153 | printf("%s\n", buf); |
154 | } | |
155 | } | |
156 | return 0; | |
157 | } | |
158 | ||
69932bc6 SB |
159 | static int hash_callback(const struct option *opt, const char *arg, int unset) |
160 | { | |
161 | hash_only = 1; | |
162 | /* Use full length SHA1 if no argument */ | |
163 | if (!arg) | |
164 | return 0; | |
165 | return parse_opt_abbrev_cb(opt, arg, unset); | |
166 | } | |
167 | ||
168 | static int exclude_existing_callback(const struct option *opt, const char *arg, | |
169 | int unset) | |
170 | { | |
171 | exclude_arg = 1; | |
172 | *(const char **)opt->value = arg; | |
173 | return 0; | |
174 | } | |
175 | ||
176 | static int help_callback(const struct option *opt, const char *arg, int unset) | |
177 | { | |
178 | return -1; | |
179 | } | |
180 | ||
181 | static const struct option show_ref_options[] = { | |
182 | OPT_BOOLEAN(0, "tags", &tags_only, "only show tags (can be combined with heads)"), | |
183 | OPT_BOOLEAN(0, "heads", &heads_only, "only show heads (can be combined with tags)"), | |
184 | OPT_BOOLEAN(0, "verify", &verify, "stricter reference checking, " | |
185 | "requires exact ref path"), | |
e62b3935 JN |
186 | { OPTION_BOOLEAN, 'h', NULL, &show_head, NULL, |
187 | "show the HEAD reference", | |
188 | PARSE_OPT_NOARG | PARSE_OPT_HIDDEN }, | |
189 | OPT_BOOLEAN(0, "head", &show_head, "show the HEAD reference"), | |
69932bc6 SB |
190 | OPT_BOOLEAN('d', "dereference", &deref_tags, |
191 | "dereference tags into object IDs"), | |
192 | { OPTION_CALLBACK, 's', "hash", &abbrev, "n", | |
193 | "only show SHA1 hash using <n> digits", | |
194 | PARSE_OPT_OPTARG, &hash_callback }, | |
195 | OPT__ABBREV(&abbrev), | |
196 | OPT__QUIET(&quiet), | |
197 | { OPTION_CALLBACK, 0, "exclude-existing", &exclude_existing_arg, | |
198 | "pattern", "show refs from stdin that aren't in local repository", | |
199 | PARSE_OPT_OPTARG | PARSE_OPT_NONEG, exclude_existing_callback }, | |
200 | { OPTION_CALLBACK, 0, "help-all", NULL, NULL, "show usage", | |
201 | PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback }, | |
202 | OPT_END() | |
203 | }; | |
204 | ||
358ddb62 LT |
205 | int cmd_show_ref(int argc, const char **argv, const char *prefix) |
206 | { | |
e62b3935 JN |
207 | if (argc == 2 && !strcmp(argv[1], "-h")) |
208 | usage_with_options(show_ref_usage, show_ref_options); | |
209 | ||
69932bc6 SB |
210 | argc = parse_options(argc, argv, prefix, show_ref_options, |
211 | show_ref_usage, PARSE_OPT_NO_INTERNAL_HELP); | |
358ddb62 | 212 | |
69932bc6 SB |
213 | if (exclude_arg) |
214 | return exclude_existing(exclude_existing_arg); | |
215 | ||
216 | pattern = argv; | |
217 | if (!*pattern) | |
218 | pattern = NULL; | |
26cdd1e7 JH |
219 | |
220 | if (verify) { | |
8ab40a20 DL |
221 | if (!pattern) |
222 | die("--verify requires a reference"); | |
26cdd1e7 | 223 | while (*pattern) { |
8ab40a20 DL |
224 | unsigned char sha1[20]; |
225 | ||
cc44c765 | 226 | if (!prefixcmp(*pattern, "refs/") && |
64fe031a | 227 | resolve_ref(*pattern, sha1, 1, NULL)) { |
dd914299 | 228 | if (!quiet) |
64fe031a | 229 | show_one(*pattern, sha1); |
dd914299 | 230 | } |
26cdd1e7 JH |
231 | else if (!quiet) |
232 | die("'%s' - not a valid ref", *pattern); | |
233 | else | |
234 | return 1; | |
235 | pattern++; | |
236 | } | |
237 | return 0; | |
238 | } | |
239 | ||
358ddb62 | 240 | if (show_head) |
eaf12a8c JH |
241 | head_ref(show_ref, NULL); |
242 | for_each_ref(show_ref, NULL); | |
358ddb62 LT |
243 | if (!found_match) { |
244 | if (verify && !quiet) | |
245 | die("No match"); | |
246 | return 1; | |
247 | } | |
248 | return 0; | |
249 | } |