Remove TYPE_* constant macros and use object_type enums consistently.
[git/git.git] / name-rev.c
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1#include <stdlib.h>
2#include "cache.h"
3#include "commit.h"
4#include "tag.h"
5#include "refs.h"
6
7static const char name_rev_usage[] =
82e5a82f 8 "git-name-rev [--tags] ( --all | --stdin | committish [committish...] )\n";
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9
10typedef struct rev_name {
11 const char *tip_name;
12 int merge_traversals;
13 int generation;
14} rev_name;
15
16static long cutoff = LONG_MAX;
17
18static 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;
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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;
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45 goto copy_data;
46 } else if (name->merge_traversals > merge_traversals ||
47 (name->merge_traversals == merge_traversals &&
48 name->generation > generation)) {
49copy_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) {
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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
77static int tags_only = 0;
78
79static 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
1974632c 87 while (o && o->type == OBJ_TAG) {
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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 }
1974632c 94 if (o && o->type == OBJ_COMMIT) {
bd321bcc 95 struct commit *commit = (struct commit *)o;
bd321bcc 96
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97 if (!strncmp(path, "refs/heads/", 11))
98 path = path + 11;
99 else if (!strncmp(path, "refs/", 5))
100 path = path + 5;
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101
102 name_rev(commit, strdup(path), 0, 0, deref);
103 }
104 return 0;
105}
106
107/* returns a static buffer */
108static const char* get_rev_name(struct object *o)
109{
110 static char buffer[1024];
d3ff6f55
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111 struct rev_name *n;
112 struct commit *c;
113
1974632c 114 if (o->type != OBJ_COMMIT)
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115 return "undefined";
116 c = (struct commit *) o;
117 n = c->util;
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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
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129int main(int argc, char **argv)
130{
1f1e895f 131 struct object_array revs = { 0, 0, NULL };
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132 int as_is = 0, all = 0, transform_stdin = 0;
133
134 setup_git_directory();
84a9b58c 135 git_config(git_default_config);
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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);
1974632c 175 if (!o || o->type != OBJ_COMMIT) {
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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);
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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
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225 fwrite(p_start, p - p_start + 1, 1,
226 stdout);
227 printf(" (%s)", name);
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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
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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
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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 }
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253
254 return 0;
255}
256