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bd321bcc JS |
1 | #include <stdlib.h> |
2 | #include "cache.h" | |
3 | #include "commit.h" | |
4 | #include "tag.h" | |
5 | #include "refs.h" | |
6 | ||
7 | static const char name_rev_usage[] = | |
8 | "git-name-rev [--tags] ( --all | --stdin | commitish [commitish...] )\n"; | |
9 | ||
10 | typedef struct rev_name { | |
11 | const char *tip_name; | |
12 | int merge_traversals; | |
13 | int generation; | |
14 | } rev_name; | |
15 | ||
16 | static long cutoff = LONG_MAX; | |
17 | ||
18 | static void name_rev(struct commit *commit, | |
19 | const char *tip_name, int merge_traversals, int generation, | |
20 | int deref) | |
21 | { | |
d3ff6f55 | 22 | struct rev_name *name = (struct rev_name *)commit->util; |
bd321bcc | 23 | struct commit_list *parents; |
f2e6f1c9 | 24 | int parent_number = 1; |
bd321bcc JS |
25 | |
26 | if (!commit->object.parsed) | |
27 | parse_commit(commit); | |
28 | ||
29 | if (commit->date < cutoff) | |
30 | return; | |
31 | ||
32 | if (deref) { | |
33 | char *new_name = xmalloc(strlen(tip_name)+3); | |
34 | strcpy(new_name, tip_name); | |
35 | strcat(new_name, "^0"); | |
36 | tip_name = new_name; | |
37 | ||
38 | if (generation) | |
39 | die("generation: %d, but deref?", generation); | |
40 | } | |
41 | ||
42 | if (name == NULL) { | |
43 | name = xmalloc(sizeof(rev_name)); | |
d3ff6f55 | 44 | commit->util = name; |
bd321bcc JS |
45 | goto copy_data; |
46 | } else if (name->merge_traversals > merge_traversals || | |
47 | (name->merge_traversals == merge_traversals && | |
48 | name->generation > generation)) { | |
49 | copy_data: | |
50 | name->tip_name = tip_name; | |
51 | name->merge_traversals = merge_traversals; | |
52 | name->generation = generation; | |
53 | } else | |
54 | return; | |
55 | ||
56 | for (parents = commit->parents; | |
57 | parents; | |
58 | parents = parents->next, parent_number++) { | |
f2e6f1c9 | 59 | if (parent_number > 1) { |
bd321bcc JS |
60 | char *new_name = xmalloc(strlen(tip_name)+8); |
61 | ||
62 | if (generation > 0) | |
63 | sprintf(new_name, "%s~%d^%d", tip_name, | |
64 | generation, parent_number); | |
65 | else | |
66 | sprintf(new_name, "%s^%d", tip_name, parent_number); | |
67 | ||
68 | name_rev(parents->item, new_name, | |
69 | merge_traversals + 1 , 0, 0); | |
70 | } else { | |
71 | name_rev(parents->item, tip_name, merge_traversals, | |
72 | generation + 1, 0); | |
73 | } | |
74 | } | |
75 | } | |
76 | ||
77 | static int tags_only = 0; | |
78 | ||
79 | static int name_ref(const char *path, const unsigned char *sha1) | |
80 | { | |
81 | struct object *o = parse_object(sha1); | |
82 | int deref = 0; | |
83 | ||
84 | if (tags_only && strncmp(path, "refs/tags/", 10)) | |
85 | return 0; | |
86 | ||
885a86ab | 87 | while (o && o->type == TYPE_TAG) { |
bd321bcc JS |
88 | struct tag *t = (struct tag *) o; |
89 | if (!t->tagged) | |
90 | break; /* broken repository */ | |
91 | o = parse_object(t->tagged->sha1); | |
92 | deref = 1; | |
93 | } | |
885a86ab | 94 | if (o && o->type == TYPE_COMMIT) { |
bd321bcc | 95 | struct commit *commit = (struct commit *)o; |
bd321bcc | 96 | |
2c817df2 JH |
97 | if (!strncmp(path, "refs/heads/", 11)) |
98 | path = path + 11; | |
99 | else if (!strncmp(path, "refs/", 5)) | |
100 | path = path + 5; | |
bd321bcc JS |
101 | |
102 | name_rev(commit, strdup(path), 0, 0, deref); | |
103 | } | |
104 | return 0; | |
105 | } | |
106 | ||
107 | /* returns a static buffer */ | |
108 | static const char* get_rev_name(struct object *o) | |
109 | { | |
110 | static char buffer[1024]; | |
d3ff6f55 LT |
111 | struct rev_name *n; |
112 | struct commit *c; | |
113 | ||
114 | if (o->type != TYPE_COMMIT) | |
115 | return "undefined"; | |
116 | c = (struct commit *) o; | |
117 | n = c->util; | |
bd321bcc JS |
118 | if (!n) |
119 | return "undefined"; | |
120 | ||
121 | if (!n->generation) | |
122 | return n->tip_name; | |
123 | ||
124 | snprintf(buffer, sizeof(buffer), "%s~%d", n->tip_name, n->generation); | |
125 | ||
126 | return buffer; | |
127 | } | |
1f1e895f | 128 | |
bd321bcc JS |
129 | int main(int argc, char **argv) |
130 | { | |
1f1e895f | 131 | struct object_array revs = { 0, 0, NULL }; |
bd321bcc JS |
132 | int as_is = 0, all = 0, transform_stdin = 0; |
133 | ||
134 | setup_git_directory(); | |
84a9b58c | 135 | git_config(git_default_config); |
bd321bcc JS |
136 | |
137 | if (argc < 2) | |
138 | usage(name_rev_usage); | |
139 | ||
140 | for (--argc, ++argv; argc; --argc, ++argv) { | |
141 | unsigned char sha1[20]; | |
142 | struct object *o; | |
143 | struct commit *commit; | |
144 | ||
145 | if (!as_is && (*argv)[0] == '-') { | |
146 | if (!strcmp(*argv, "--")) { | |
147 | as_is = 1; | |
148 | continue; | |
149 | } else if (!strcmp(*argv, "--tags")) { | |
150 | tags_only = 1; | |
151 | continue; | |
152 | } else if (!strcmp(*argv, "--all")) { | |
153 | if (argc > 1) | |
154 | die("Specify either a list, or --all, not both!"); | |
155 | all = 1; | |
156 | cutoff = 0; | |
157 | continue; | |
158 | } else if (!strcmp(*argv, "--stdin")) { | |
159 | if (argc > 1) | |
160 | die("Specify either a list, or --stdin, not both!"); | |
161 | transform_stdin = 1; | |
162 | cutoff = 0; | |
163 | continue; | |
164 | } | |
165 | usage(name_rev_usage); | |
166 | } | |
167 | ||
168 | if (get_sha1(*argv, sha1)) { | |
169 | fprintf(stderr, "Could not get sha1 for %s. Skipping.\n", | |
170 | *argv); | |
171 | continue; | |
172 | } | |
173 | ||
9534f40b | 174 | o = deref_tag(parse_object(sha1), *argv, 0); |
885a86ab | 175 | if (!o || o->type != TYPE_COMMIT) { |
bd321bcc JS |
176 | fprintf(stderr, "Could not get commit for %s. Skipping.\n", |
177 | *argv); | |
178 | continue; | |
179 | } | |
180 | ||
181 | commit = (struct commit *)o; | |
182 | ||
183 | if (cutoff > commit->date) | |
184 | cutoff = commit->date; | |
185 | ||
1f1e895f | 186 | add_object_array((struct object *)commit, *argv, &revs); |
bd321bcc JS |
187 | } |
188 | ||
189 | for_each_ref(name_ref); | |
190 | ||
191 | if (transform_stdin) { | |
192 | char buffer[2048]; | |
193 | char *p, *p_start; | |
194 | ||
195 | while (!feof(stdin)) { | |
196 | int forty = 0; | |
197 | p = fgets(buffer, sizeof(buffer), stdin); | |
198 | if (!p) | |
199 | break; | |
200 | ||
201 | for (p_start = p; *p; p++) { | |
202 | #define ishex(x) (isdigit((x)) || ((x) >= 'a' && (x) <= 'f')) | |
203 | if (!ishex(*p)) | |
204 | forty = 0; | |
205 | else if (++forty == 40 && | |
206 | !ishex(*(p+1))) { | |
207 | unsigned char sha1[40]; | |
208 | const char *name = "undefined"; | |
209 | char c = *(p+1); | |
210 | ||
211 | forty = 0; | |
212 | ||
213 | *(p+1) = 0; | |
214 | if (!get_sha1(p - 39, sha1)) { | |
215 | struct object *o = | |
216 | lookup_object(sha1); | |
217 | if (o) | |
218 | name = get_rev_name(o); | |
219 | } | |
220 | *(p+1) = c; | |
221 | ||
222 | if (!strcmp(name, "undefined")) | |
223 | continue; | |
224 | ||
2d76d0d1 JH |
225 | fwrite(p_start, p - p_start + 1, 1, |
226 | stdout); | |
227 | printf(" (%s)", name); | |
bd321bcc JS |
228 | p_start = p + 1; |
229 | } | |
230 | } | |
231 | ||
232 | /* flush */ | |
233 | if (p_start != p) | |
234 | fwrite(p_start, p - p_start, 1, stdout); | |
235 | } | |
236 | } else if (all) { | |
fc046a75 | 237 | int i, max; |
bd321bcc | 238 | |
fc046a75 LT |
239 | max = get_max_object_index(); |
240 | for (i = 0; i < max; i++) { | |
241 | struct object * obj = get_indexed_object(i); | |
242 | if (!obj) | |
243 | continue; | |
244 | printf("%s %s\n", sha1_to_hex(obj->sha1), get_rev_name(obj)); | |
245 | } | |
1f1e895f LT |
246 | } else { |
247 | int i; | |
248 | for (i = 0; i < revs.nr; i++) | |
249 | printf("%s %s\n", | |
250 | revs.objects[i].name, | |
251 | get_rev_name(revs.objects[i].item)); | |
252 | } | |
bd321bcc JS |
253 | |
254 | return 0; | |
255 | } | |
256 |