Add handlers for fetch-side configuration of remotes.
[git/mingw/j6t.git] / builtin-name-rev.c
blobef1638590722017ad2cacca7ce30098fd0392bd5
1 #include "builtin.h"
2 #include "cache.h"
3 #include "commit.h"
4 #include "tag.h"
5 #include "refs.h"
7 static const char name_rev_usage[] =
8 "git-name-rev [--tags | --refs=<pattern>] ( --all | --stdin | committish [committish...] )\n";
10 typedef struct rev_name {
11 const char *tip_name;
12 int merge_traversals;
13 int generation;
14 } rev_name;
16 static long cutoff = LONG_MAX;
18 static void name_rev(struct commit *commit,
19 const char *tip_name, int merge_traversals, int generation,
20 int deref)
22 struct rev_name *name = (struct rev_name *)commit->util;
23 struct commit_list *parents;
24 int parent_number = 1;
26 if (!commit->object.parsed)
27 parse_commit(commit);
29 if (commit->date < cutoff)
30 return;
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;
38 if (generation)
39 die("generation: %d, but deref?", generation);
42 if (name == NULL) {
43 name = xmalloc(sizeof(rev_name));
44 commit->util = name;
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;
56 for (parents = commit->parents;
57 parents;
58 parents = parents->next, parent_number++) {
59 if (parent_number > 1) {
60 int len = strlen(tip_name);
61 char *new_name = xmalloc(len +
62 1 + decimal_length(generation) + /* ~<n> */
63 1 + 2 + /* ^NN */
64 1);
66 if (len > 2 && !strcmp(tip_name + len - 2, "^0"))
67 len -= 2;
68 if (generation > 0)
69 sprintf(new_name, "%.*s~%d^%d", len, tip_name,
70 generation, parent_number);
71 else
72 sprintf(new_name, "%.*s^%d", len, tip_name,
73 parent_number);
75 name_rev(parents->item, new_name,
76 merge_traversals + 1 , 0, 0);
77 } else {
78 name_rev(parents->item, tip_name, merge_traversals,
79 generation + 1, 0);
84 struct name_ref_data {
85 int tags_only;
86 const char *ref_filter;
89 static int name_ref(const char *path, const unsigned char *sha1, int flags, void *cb_data)
91 struct object *o = parse_object(sha1);
92 struct name_ref_data *data = cb_data;
93 int deref = 0;
95 if (data->tags_only && prefixcmp(path, "refs/tags/"))
96 return 0;
98 if (data->ref_filter && fnmatch(data->ref_filter, path, 0))
99 return 0;
101 while (o && o->type == OBJ_TAG) {
102 struct tag *t = (struct tag *) o;
103 if (!t->tagged)
104 break; /* broken repository */
105 o = parse_object(t->tagged->sha1);
106 deref = 1;
108 if (o && o->type == OBJ_COMMIT) {
109 struct commit *commit = (struct commit *)o;
111 if (!prefixcmp(path, "refs/heads/"))
112 path = path + 11;
113 else if (!prefixcmp(path, "refs/"))
114 path = path + 5;
116 name_rev(commit, xstrdup(path), 0, 0, deref);
118 return 0;
121 /* returns a static buffer */
122 static const char* get_rev_name(struct object *o)
124 static char buffer[1024];
125 struct rev_name *n;
126 struct commit *c;
128 if (o->type != OBJ_COMMIT)
129 return "undefined";
130 c = (struct commit *) o;
131 n = c->util;
132 if (!n)
133 return "undefined";
135 if (!n->generation)
136 return n->tip_name;
137 else {
138 int len = strlen(n->tip_name);
139 if (len > 2 && !strcmp(n->tip_name + len - 2, "^0"))
140 len -= 2;
141 snprintf(buffer, sizeof(buffer), "%.*s~%d", len, n->tip_name,
142 n->generation);
144 return buffer;
148 int cmd_name_rev(int argc, const char **argv, const char *prefix)
150 struct object_array revs = { 0, 0, NULL };
151 int as_is = 0, all = 0, transform_stdin = 0;
152 struct name_ref_data data = { 0, NULL };
154 git_config(git_default_config);
156 if (argc < 2)
157 usage(name_rev_usage);
159 for (--argc, ++argv; argc; --argc, ++argv) {
160 unsigned char sha1[20];
161 struct object *o;
162 struct commit *commit;
164 if (!as_is && (*argv)[0] == '-') {
165 if (!strcmp(*argv, "--")) {
166 as_is = 1;
167 continue;
168 } else if (!strcmp(*argv, "--tags")) {
169 data.tags_only = 1;
170 continue;
171 } else if (!prefixcmp(*argv, "--refs=")) {
172 data.ref_filter = *argv + 7;
173 continue;
174 } else if (!strcmp(*argv, "--all")) {
175 if (argc > 1)
176 die("Specify either a list, or --all, not both!");
177 all = 1;
178 cutoff = 0;
179 continue;
180 } else if (!strcmp(*argv, "--stdin")) {
181 if (argc > 1)
182 die("Specify either a list, or --stdin, not both!");
183 transform_stdin = 1;
184 cutoff = 0;
185 continue;
187 usage(name_rev_usage);
190 if (get_sha1(*argv, sha1)) {
191 fprintf(stderr, "Could not get sha1 for %s. Skipping.\n",
192 *argv);
193 continue;
196 o = deref_tag(parse_object(sha1), *argv, 0);
197 if (!o || o->type != OBJ_COMMIT) {
198 fprintf(stderr, "Could not get commit for %s. Skipping.\n",
199 *argv);
200 continue;
203 commit = (struct commit *)o;
205 if (cutoff > commit->date)
206 cutoff = commit->date;
208 add_object_array((struct object *)commit, *argv, &revs);
211 for_each_ref(name_ref, &data);
213 if (transform_stdin) {
214 char buffer[2048];
215 char *p, *p_start;
217 while (!feof(stdin)) {
218 int forty = 0;
219 p = fgets(buffer, sizeof(buffer), stdin);
220 if (!p)
221 break;
223 for (p_start = p; *p; p++) {
224 #define ishex(x) (isdigit((x)) || ((x) >= 'a' && (x) <= 'f'))
225 if (!ishex(*p))
226 forty = 0;
227 else if (++forty == 40 &&
228 !ishex(*(p+1))) {
229 unsigned char sha1[40];
230 const char *name = "undefined";
231 char c = *(p+1);
233 forty = 0;
235 *(p+1) = 0;
236 if (!get_sha1(p - 39, sha1)) {
237 struct object *o =
238 lookup_object(sha1);
239 if (o)
240 name = get_rev_name(o);
242 *(p+1) = c;
244 if (!strcmp(name, "undefined"))
245 continue;
247 fwrite(p_start, p - p_start + 1, 1,
248 stdout);
249 printf(" (%s)", name);
250 p_start = p + 1;
254 /* flush */
255 if (p_start != p)
256 fwrite(p_start, p - p_start, 1, stdout);
258 } else if (all) {
259 int i, max;
261 max = get_max_object_index();
262 for (i = 0; i < max; i++) {
263 struct object * obj = get_indexed_object(i);
264 if (!obj)
265 continue;
266 printf("%s %s\n", sha1_to_hex(obj->sha1), get_rev_name(obj));
268 } else {
269 int i;
270 for (i = 0; i < revs.nr; i++)
271 printf("%s %s\n",
272 revs.objects[i].name,
273 get_rev_name(revs.objects[i].item));
276 return 0;