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Commit | Line | Data |
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358ddb62 LT |
1 | #include "cache.h" |
2 | #include "refs.h" | |
3 | #include "object.h" | |
4 | #include "tag.h" | |
5 | ||
97f7a7bd | 6 | static const char show_ref_usage[] = "git show-ref [-q|--quiet] [--verify] [-h|--head] [-d|--dereference] [-s|--hash[=<length>]] [--abbrev[=<length>]] [--tags] [--heads] [--] [pattern*]"; |
358ddb62 | 7 | |
c40abef8 | 8 | static int deref_tags = 0, show_head = 0, tags_only = 0, heads_only = 0, |
2eaf2224 | 9 | found_match = 0, verify = 0, quiet = 0, hash_only = 0, abbrev = 0; |
358ddb62 LT |
10 | static const char **pattern; |
11 | ||
eaf12a8c | 12 | static int show_ref(const char *refname, const unsigned char *sha1, int flag, void *cbdata) |
358ddb62 LT |
13 | { |
14 | struct object *obj; | |
2eaf2224 | 15 | const char *hex; |
cf0adba7 | 16 | unsigned char peeled[20]; |
358ddb62 LT |
17 | |
18 | if (tags_only || heads_only) { | |
19 | int match; | |
20 | ||
21 | match = heads_only && !strncmp(refname, "refs/heads/", 11); | |
22 | match |= tags_only && !strncmp(refname, "refs/tags/", 10); | |
23 | if (!match) | |
24 | return 0; | |
25 | } | |
26 | if (pattern) { | |
27 | int reflen = strlen(refname); | |
28 | const char **p = pattern, *m; | |
29 | while ((m = *p++) != NULL) { | |
30 | int len = strlen(m); | |
31 | if (len > reflen) | |
32 | continue; | |
33 | if (memcmp(m, refname + reflen - len, len)) | |
34 | continue; | |
35 | if (len == reflen) | |
36 | goto match; | |
37 | /* "--verify" requires an exact match */ | |
38 | if (verify) | |
39 | continue; | |
40 | if (refname[reflen - len - 1] == '/') | |
41 | goto match; | |
42 | } | |
43 | return 0; | |
44 | } | |
45 | ||
46 | match: | |
47 | found_match++; | |
cf0adba7 JH |
48 | |
49 | /* This changes the semantics slightly that even under quiet we | |
50 | * detect and return error if the repository is corrupt and | |
51 | * ref points at a nonexistent object. | |
52 | */ | |
53 | if (!has_sha1_file(sha1)) | |
54 | die("git-show-ref: bad ref %s (%s)", refname, | |
55 | sha1_to_hex(sha1)); | |
56 | ||
358ddb62 LT |
57 | if (quiet) |
58 | return 0; | |
2eaf2224 JH |
59 | |
60 | hex = find_unique_abbrev(sha1, abbrev); | |
c40abef8 | 61 | if (hash_only) |
2eaf2224 | 62 | printf("%s\n", hex); |
c40abef8 | 63 | else |
2eaf2224 | 64 | printf("%s %s\n", hex, refname); |
cf0adba7 JH |
65 | |
66 | if (!deref_tags) | |
67 | return 0; | |
68 | ||
69 | if ((flag & REF_ISPACKED) && !peel_ref(refname, peeled)) { | |
f4204ab9 JH |
70 | if (!is_null_sha1(peeled)) { |
71 | hex = find_unique_abbrev(peeled, abbrev); | |
72 | printf("%s %s^{}\n", hex, refname); | |
73 | } | |
358ddb62 | 74 | } |
cf0adba7 JH |
75 | else { |
76 | obj = parse_object(sha1); | |
77 | if (!obj) | |
78 | die("git-show-ref: bad ref %s (%s)", refname, | |
79 | sha1_to_hex(sha1)); | |
80 | if (obj->type == OBJ_TAG) { | |
81 | obj = deref_tag(obj, refname, 0); | |
82 | hex = find_unique_abbrev(obj->sha1, abbrev); | |
83 | printf("%s %s^{}\n", hex, refname); | |
84 | } | |
85 | } | |
358ddb62 LT |
86 | return 0; |
87 | } | |
88 | ||
89 | int cmd_show_ref(int argc, const char **argv, const char *prefix) | |
90 | { | |
91 | int i; | |
92 | ||
93 | for (i = 1; i < argc; i++) { | |
94 | const char *arg = argv[i]; | |
95 | if (*arg != '-') { | |
96 | pattern = argv + i; | |
97 | break; | |
98 | } | |
99 | if (!strcmp(arg, "--")) { | |
100 | pattern = argv + i + 1; | |
101 | if (!*pattern) | |
102 | pattern = NULL; | |
103 | break; | |
104 | } | |
105 | if (!strcmp(arg, "-q") || !strcmp(arg, "--quiet")) { | |
106 | quiet = 1; | |
107 | continue; | |
108 | } | |
109 | if (!strcmp(arg, "-h") || !strcmp(arg, "--head")) { | |
110 | show_head = 1; | |
111 | continue; | |
112 | } | |
113 | if (!strcmp(arg, "-d") || !strcmp(arg, "--dereference")) { | |
114 | deref_tags = 1; | |
115 | continue; | |
116 | } | |
c40abef8 CC |
117 | if (!strcmp(arg, "-s") || !strcmp(arg, "--hash")) { |
118 | hash_only = 1; | |
119 | continue; | |
120 | } | |
2eaf2224 JH |
121 | if (!strncmp(arg, "--hash=", 7) || |
122 | (!strncmp(arg, "--abbrev", 8) && | |
123 | (arg[8] == '=' || arg[8] == '\0'))) { | |
124 | if (arg[3] != 'h' && !arg[8]) | |
125 | /* --abbrev only */ | |
126 | abbrev = DEFAULT_ABBREV; | |
127 | else { | |
128 | /* --hash= or --abbrev= */ | |
129 | char *end; | |
130 | if (arg[3] == 'h') { | |
131 | hash_only = 1; | |
132 | arg += 7; | |
133 | } | |
134 | else | |
135 | arg += 9; | |
136 | abbrev = strtoul(arg, &end, 10); | |
137 | if (*end || abbrev > 40) | |
138 | usage(show_ref_usage); | |
139 | if (abbrev < MINIMUM_ABBREV) | |
140 | abbrev = MINIMUM_ABBREV; | |
141 | } | |
142 | continue; | |
143 | } | |
358ddb62 LT |
144 | if (!strcmp(arg, "--verify")) { |
145 | verify = 1; | |
146 | continue; | |
147 | } | |
148 | if (!strcmp(arg, "--tags")) { | |
149 | tags_only = 1; | |
150 | continue; | |
151 | } | |
152 | if (!strcmp(arg, "--heads")) { | |
153 | heads_only = 1; | |
154 | continue; | |
155 | } | |
156 | usage(show_ref_usage); | |
157 | } | |
158 | if (show_head) | |
eaf12a8c JH |
159 | head_ref(show_ref, NULL); |
160 | for_each_ref(show_ref, NULL); | |
358ddb62 LT |
161 | if (!found_match) { |
162 | if (verify && !quiet) | |
163 | die("No match"); | |
164 | return 1; | |
165 | } | |
166 | return 0; | |
167 | } |