Documentation/urls.txt: Use substitution to escape square brackets
[git/git.git] / builtin-log.c
1 /*
2 * Builtin "git log" and related commands (show, whatchanged)
3 *
4 * (C) Copyright 2006 Linus Torvalds
5 * 2006 Junio Hamano
6 */
7 #include "cache.h"
8 #include "commit.h"
9 #include "diff.h"
10 #include "revision.h"
11 #include "log-tree.h"
12 #include "builtin.h"
13
14 /* this is in builtin-diff.c */
15 void add_head(struct rev_info *revs);
16
17 static void cmd_log_init(int argc, const char **argv, char **envp,
18 struct rev_info *rev)
19 {
20 rev->abbrev = DEFAULT_ABBREV;
21 rev->commit_format = CMIT_FMT_DEFAULT;
22 rev->verbose_header = 1;
23 argc = setup_revisions(argc, argv, rev, "HEAD");
24 if (rev->diffopt.pickaxe || rev->diffopt.filter)
25 rev->always_show_header = 0;
26 if (argc > 1)
27 die("unrecognized argument: %s", argv[1]);
28 }
29
30 static int cmd_log_walk(struct rev_info *rev)
31 {
32 struct commit *commit;
33
34 prepare_revision_walk(rev);
35 setup_pager();
36 while ((commit = get_revision(rev)) != NULL) {
37 log_tree_commit(rev, commit);
38 free(commit->buffer);
39 commit->buffer = NULL;
40 free_commit_list(commit->parents);
41 commit->parents = NULL;
42 }
43 return 0;
44 }
45
46 int cmd_whatchanged(int argc, const char **argv, char **envp)
47 {
48 struct rev_info rev;
49
50 git_config(git_diff_ui_config);
51 init_revisions(&rev);
52 rev.diff = 1;
53 rev.diffopt.recursive = 1;
54 rev.simplify_history = 0;
55 cmd_log_init(argc, argv, envp, &rev);
56 if (!rev.diffopt.output_format)
57 rev.diffopt.output_format = DIFF_FORMAT_RAW;
58 return cmd_log_walk(&rev);
59 }
60
61 int cmd_show(int argc, const char **argv, char **envp)
62 {
63 struct rev_info rev;
64
65 git_config(git_diff_ui_config);
66 init_revisions(&rev);
67 rev.diff = 1;
68 rev.diffopt.recursive = 1;
69 rev.combine_merges = 1;
70 rev.dense_combined_merges = 1;
71 rev.always_show_header = 1;
72 rev.ignore_merges = 0;
73 rev.no_walk = 1;
74 cmd_log_init(argc, argv, envp, &rev);
75 return cmd_log_walk(&rev);
76 }
77
78 int cmd_log(int argc, const char **argv, char **envp)
79 {
80 struct rev_info rev;
81
82 git_config(git_diff_ui_config);
83 init_revisions(&rev);
84 rev.always_show_header = 1;
85 cmd_log_init(argc, argv, envp, &rev);
86 return cmd_log_walk(&rev);
87 }
88
89 static int istitlechar(char c)
90 {
91 return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
92 (c >= '0' && c <= '9') || c == '.' || c == '_';
93 }
94
95 static char *extra_headers = NULL;
96 static int extra_headers_size = 0;
97
98 static int git_format_config(const char *var, const char *value)
99 {
100 if (!strcmp(var, "format.headers")) {
101 int len = strlen(value);
102 extra_headers_size += len + 1;
103 extra_headers = realloc(extra_headers, extra_headers_size);
104 extra_headers[extra_headers_size - len - 1] = 0;
105 strcat(extra_headers, value);
106 return 0;
107 }
108 if (!strcmp(var, "diff.color")) {
109 return 0;
110 }
111 return git_diff_ui_config(var, value);
112 }
113
114
115 static FILE *realstdout = NULL;
116 static const char *output_directory = NULL;
117
118 static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
119 {
120 char filename[1024];
121 char *sol;
122 int len = 0;
123
124 if (output_directory) {
125 strlcpy(filename, output_directory, 1010);
126 len = strlen(filename);
127 if (filename[len - 1] != '/')
128 filename[len++] = '/';
129 }
130
131 sprintf(filename + len, "%04d", nr);
132 len = strlen(filename);
133
134 sol = strstr(commit->buffer, "\n\n");
135 if (sol) {
136 int j, space = 1;
137
138 sol += 2;
139 /* strip [PATCH] or [PATCH blabla] */
140 if (!keep_subject && !strncmp(sol, "[PATCH", 6)) {
141 char *eos = strchr(sol + 6, ']');
142 if (eos) {
143 while (isspace(*eos))
144 eos++;
145 sol = eos;
146 }
147 }
148
149 for (j = 0; len < 1024 - 6 && sol[j] && sol[j] != '\n'; j++) {
150 if (istitlechar(sol[j])) {
151 if (space) {
152 filename[len++] = '-';
153 space = 0;
154 }
155 filename[len++] = sol[j];
156 if (sol[j] == '.')
157 while (sol[j + 1] == '.')
158 j++;
159 } else
160 space = 1;
161 }
162 while (filename[len - 1] == '.' || filename[len - 1] == '-')
163 len--;
164 }
165 strcpy(filename + len, ".txt");
166 fprintf(realstdout, "%s\n", filename);
167 freopen(filename, "w", stdout);
168 }
169
170 static int get_patch_id(struct commit *commit, struct diff_options *options,
171 unsigned char *sha1)
172 {
173 diff_tree_sha1(commit->parents->item->object.sha1, commit->object.sha1,
174 "", options);
175 diffcore_std(options);
176 return diff_flush_patch_id(options, sha1);
177 }
178
179 static void get_patch_ids(struct rev_info *rev, struct diff_options *options)
180 {
181 struct rev_info check_rev;
182 struct commit *commit;
183 struct object *o1, *o2;
184 unsigned flags1, flags2;
185 unsigned char sha1[20];
186
187 if (rev->pending.nr != 2)
188 die("Need exactly one range.");
189
190 o1 = rev->pending.objects[0].item;
191 flags1 = o1->flags;
192 o2 = rev->pending.objects[1].item;
193 flags2 = o2->flags;
194
195 if ((flags1 & UNINTERESTING) == (flags2 & UNINTERESTING))
196 die("Not a range.");
197
198 diff_setup(options);
199 options->recursive = 1;
200 if (diff_setup_done(options) < 0)
201 die("diff_setup_done failed");
202
203 /* given a range a..b get all patch ids for b..a */
204 init_revisions(&check_rev);
205 o1->flags ^= UNINTERESTING;
206 o2->flags ^= UNINTERESTING;
207 add_pending_object(&check_rev, o1, "o1");
208 add_pending_object(&check_rev, o2, "o2");
209 prepare_revision_walk(&check_rev);
210
211 while ((commit = get_revision(&check_rev)) != NULL) {
212 /* ignore merges */
213 if (commit->parents && commit->parents->next)
214 continue;
215
216 if (!get_patch_id(commit, options, sha1))
217 created_object(sha1, xcalloc(1, sizeof(struct object)));
218 }
219
220 /* reset for next revision walk */
221 clear_commit_marks((struct commit *)o1,
222 SEEN | UNINTERESTING | SHOWN | ADDED);
223 clear_commit_marks((struct commit *)o2,
224 SEEN | UNINTERESTING | SHOWN | ADDED);
225 o1->flags = flags1;
226 o2->flags = flags2;
227 }
228
229 int cmd_format_patch(int argc, const char **argv, char **envp)
230 {
231 struct commit *commit;
232 struct commit **list = NULL;
233 struct rev_info rev;
234 int nr = 0, total, i, j;
235 int use_stdout = 0;
236 int numbered = 0;
237 int start_number = -1;
238 int keep_subject = 0;
239 int ignore_if_in_upstream = 0;
240 struct diff_options patch_id_opts;
241 char *add_signoff = NULL;
242
243 git_config(git_format_config);
244 init_revisions(&rev);
245 rev.commit_format = CMIT_FMT_EMAIL;
246 rev.verbose_header = 1;
247 rev.diff = 1;
248 rev.combine_merges = 0;
249 rev.ignore_merges = 1;
250 rev.diffopt.msg_sep = "";
251 rev.diffopt.recursive = 1;
252
253 rev.extra_headers = extra_headers;
254
255 /*
256 * Parse the arguments before setup_revisions(), or something
257 * like "git fmt-patch -o a123 HEAD^.." may fail; a123 is
258 * possibly a valid SHA1.
259 */
260 for (i = 1, j = 1; i < argc; i++) {
261 if (!strcmp(argv[i], "--stdout"))
262 use_stdout = 1;
263 else if (!strcmp(argv[i], "-n") ||
264 !strcmp(argv[i], "--numbered"))
265 numbered = 1;
266 else if (!strncmp(argv[i], "--start-number=", 15))
267 start_number = strtol(argv[i] + 15, NULL, 10);
268 else if (!strcmp(argv[i], "--start-number")) {
269 i++;
270 if (i == argc)
271 die("Need a number for --start-number");
272 start_number = strtol(argv[i], NULL, 10);
273 }
274 else if (!strcmp(argv[i], "-k") ||
275 !strcmp(argv[i], "--keep-subject")) {
276 keep_subject = 1;
277 rev.total = -1;
278 }
279 else if (!strcmp(argv[i], "--output-directory") ||
280 !strcmp(argv[i], "-o")) {
281 i++;
282 if (argc <= i)
283 die("Which directory?");
284 if (output_directory)
285 die("Two output directories?");
286 output_directory = argv[i];
287 }
288 else if (!strcmp(argv[i], "--signoff") ||
289 !strcmp(argv[i], "-s")) {
290 const char *committer;
291 const char *endpos;
292 setup_ident();
293 committer = git_committer_info(1);
294 endpos = strchr(committer, '>');
295 if (!endpos)
296 die("bogos committer info %s\n", committer);
297 add_signoff = xmalloc(endpos - committer + 2);
298 memcpy(add_signoff, committer, endpos - committer + 1);
299 add_signoff[endpos - committer + 1] = 0;
300 }
301 else if (!strcmp(argv[i], "--attach"))
302 rev.mime_boundary = git_version_string;
303 else if (!strncmp(argv[i], "--attach=", 9))
304 rev.mime_boundary = argv[i] + 9;
305 else if (!strcmp(argv[i], "--ignore-if-in-upstream"))
306 ignore_if_in_upstream = 1;
307 else
308 argv[j++] = argv[i];
309 }
310 argc = j;
311
312 if (start_number < 0)
313 start_number = 1;
314 if (numbered && keep_subject)
315 die ("-n and -k are mutually exclusive.");
316
317 argc = setup_revisions(argc, argv, &rev, "HEAD");
318 if (argc > 1)
319 die ("unrecognized argument: %s", argv[1]);
320
321 if (!rev.diffopt.output_format)
322 rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_PATCH;
323
324 if (output_directory) {
325 if (use_stdout)
326 die("standard output, or directory, which one?");
327 if (mkdir(output_directory, 0777) < 0 && errno != EEXIST)
328 die("Could not create directory %s",
329 output_directory);
330 }
331
332 if (rev.pending.nr == 1) {
333 rev.pending.objects[0].item->flags |= UNINTERESTING;
334 add_head(&rev);
335 }
336
337 if (ignore_if_in_upstream)
338 get_patch_ids(&rev, &patch_id_opts);
339
340 if (!use_stdout)
341 realstdout = fdopen(dup(1), "w");
342
343 prepare_revision_walk(&rev);
344 while ((commit = get_revision(&rev)) != NULL) {
345 unsigned char sha1[20];
346
347 /* ignore merges */
348 if (commit->parents && commit->parents->next)
349 continue;
350
351 if (ignore_if_in_upstream &&
352 !get_patch_id(commit, &patch_id_opts, sha1) &&
353 lookup_object(sha1))
354 continue;
355
356 nr++;
357 list = realloc(list, nr * sizeof(list[0]));
358 list[nr - 1] = commit;
359 }
360 total = nr;
361 if (numbered)
362 rev.total = total + start_number - 1;
363 rev.add_signoff = add_signoff;
364 while (0 <= --nr) {
365 int shown;
366 commit = list[nr];
367 rev.nr = total - nr + (start_number - 1);
368 if (!use_stdout)
369 reopen_stdout(commit, rev.nr, keep_subject);
370 shown = log_tree_commit(&rev, commit);
371 free(commit->buffer);
372 commit->buffer = NULL;
373
374 /* We put one extra blank line between formatted
375 * patches and this flag is used by log-tree code
376 * to see if it needs to emit a LF before showing
377 * the log; when using one file per patch, we do
378 * not want the extra blank line.
379 */
380 if (!use_stdout)
381 rev.shown_one = 0;
382 if (shown) {
383 if (rev.mime_boundary)
384 printf("\n--%s%s--\n\n\n",
385 mime_boundary_leader,
386 rev.mime_boundary);
387 else
388 printf("-- \n%s\n\n", git_version_string);
389 }
390 if (!use_stdout)
391 fclose(stdout);
392 }
393 free(list);
394 return 0;
395 }
396