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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[] = { |
c9120b1c NTND |
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"), | |
69932bc6 SB |
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 | 33 | |
3f3d0cea DB |
34 | if (show_head && !strcmp(refname, "HEAD")) |
35 | goto match; | |
36 | ||
358ddb62 LT |
37 | if (tags_only || heads_only) { |
38 | int match; | |
39 | ||
59556548 CC |
40 | match = heads_only && starts_with(refname, "refs/heads/"); |
41 | match |= tags_only && starts_with(refname, "refs/tags/"); | |
358ddb62 LT |
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++; | |
cf0adba7 JH |
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)) | |
7e44c935 | 73 | die("git show-ref: bad ref %s (%s)", refname, |
cf0adba7 JH |
74 | sha1_to_hex(sha1)); |
75 | ||
358ddb62 LT |
76 | if (quiet) |
77 | return 0; | |
2eaf2224 | 78 | |
64fe031a | 79 | show_one(refname, sha1); |
cf0adba7 JH |
80 | |
81 | if (!deref_tags) | |
82 | return 0; | |
83 | ||
e6dbffa6 JK |
84 | if (!peel_ref(refname, peeled)) { |
85 | hex = find_unique_abbrev(peeled, abbrev); | |
86 | printf("%s %s^{}\n", hex, refname); | |
cf0adba7 | 87 | } |
358ddb62 LT |
88 | return 0; |
89 | } | |
90 | ||
ed9f7c95 JH |
91 | static int add_existing(const char *refname, const unsigned char *sha1, int flag, void *cbdata) |
92 | { | |
c455c87c | 93 | struct string_list *list = (struct string_list *)cbdata; |
78a395d3 | 94 | string_list_insert(list, refname); |
ed9f7c95 JH |
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 | { | |
66ce0366 | 109 | static struct string_list existing_refs = STRING_LIST_INIT_DUP; |
ed9f7c95 JH |
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)) { | |
ed9f7c95 | 115 | char *ref; |
d8285af4 JH |
116 | int len = strlen(buf); |
117 | ||
ed9f7c95 JH |
118 | if (len > 0 && buf[len - 1] == '\n') |
119 | buf[--len] = '\0'; | |
d8285af4 | 120 | if (3 <= len && !strcmp(buf + len - 3, "^{}")) { |
ed9f7c95 JH |
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 | } | |
8d9c5010 | 134 | if (check_refname_format(ref, 0)) { |
5620e77e | 135 | warning("ref '%s' ignored", ref); |
ed9f7c95 JH |
136 | continue; |
137 | } | |
c455c87c | 138 | if (!string_list_has_string(&existing_refs, ref)) { |
ed9f7c95 JH |
139 | printf("%s\n", buf); |
140 | } | |
141 | } | |
142 | return 0; | |
143 | } | |
144 | ||
69932bc6 SB |
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[] = { | |
d5d09d47 SB |
168 | OPT_BOOL(0, "tags", &tags_only, N_("only show tags (can be combined with heads)")), |
169 | OPT_BOOL(0, "heads", &heads_only, N_("only show heads (can be combined with tags)")), | |
170 | OPT_BOOL(0, "verify", &verify, N_("stricter reference checking, " | |
c9120b1c | 171 | "requires exact ref path")), |
4741edd5 SB |
172 | OPT_HIDDEN_BOOL('h', NULL, &show_head, |
173 | N_("show the HEAD reference, even if it would be filtered out")), | |
d5d09d47 | 174 | OPT_BOOL(0, "head", &show_head, |
3f3d0cea | 175 | N_("show the HEAD reference, even if it would be filtered out")), |
d5d09d47 | 176 | OPT_BOOL('d', "dereference", &deref_tags, |
c9120b1c NTND |
177 | N_("dereference tags into object IDs")), |
178 | { OPTION_CALLBACK, 's', "hash", &abbrev, N_("n"), | |
179 | N_("only show SHA1 hash using <n> digits"), | |
69932bc6 SB |
180 | PARSE_OPT_OPTARG, &hash_callback }, |
181 | OPT__ABBREV(&abbrev), | |
8c839683 | 182 | OPT__QUIET(&quiet, |
c9120b1c | 183 | N_("do not print results to stdout (useful with --verify)")), |
69932bc6 | 184 | { OPTION_CALLBACK, 0, "exclude-existing", &exclude_existing_arg, |
c9120b1c | 185 | N_("pattern"), N_("show refs from stdin that aren't in local repository"), |
69932bc6 | 186 | PARSE_OPT_OPTARG | PARSE_OPT_NONEG, exclude_existing_callback }, |
c9120b1c | 187 | { OPTION_CALLBACK, 0, "help-all", NULL, NULL, N_("show usage"), |
69932bc6 SB |
188 | PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback }, |
189 | OPT_END() | |
190 | }; | |
191 | ||
358ddb62 LT |
192 | int cmd_show_ref(int argc, const char **argv, const char *prefix) |
193 | { | |
e62b3935 JN |
194 | if (argc == 2 && !strcmp(argv[1], "-h")) |
195 | usage_with_options(show_ref_usage, show_ref_options); | |
196 | ||
69932bc6 SB |
197 | argc = parse_options(argc, argv, prefix, show_ref_options, |
198 | show_ref_usage, PARSE_OPT_NO_INTERNAL_HELP); | |
358ddb62 | 199 | |
69932bc6 SB |
200 | if (exclude_arg) |
201 | return exclude_existing(exclude_existing_arg); | |
202 | ||
203 | pattern = argv; | |
204 | if (!*pattern) | |
205 | pattern = NULL; | |
26cdd1e7 JH |
206 | |
207 | if (verify) { | |
8ab40a20 DL |
208 | if (!pattern) |
209 | die("--verify requires a reference"); | |
26cdd1e7 | 210 | while (*pattern) { |
8ab40a20 DL |
211 | unsigned char sha1[20]; |
212 | ||
59556548 | 213 | if (starts_with(*pattern, "refs/") && |
c6893323 | 214 | !read_ref(*pattern, sha1)) { |
dd914299 | 215 | if (!quiet) |
64fe031a | 216 | show_one(*pattern, sha1); |
dd914299 | 217 | } |
26cdd1e7 JH |
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 | ||
358ddb62 | 227 | if (show_head) |
eaf12a8c JH |
228 | head_ref(show_ref, NULL); |
229 | for_each_ref(show_ref, NULL); | |
358ddb62 LT |
230 | if (!found_match) { |
231 | if (verify && !quiet) | |
232 | die("No match"); | |
233 | return 1; | |
234 | } | |
235 | return 0; | |
236 | } |