705205331e5259a1dd643517d0d2983b426e1051
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"
14 /* this is in builtin-diff.c */
15 void add_head(struct rev_info *revs);
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 }
30 static int cmd_log_walk(struct rev_info *rev)
31 {
32 struct commit *commit;
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 }
46 int cmd_whatchanged(int argc, const char **argv, char **envp)
47 {
48 struct rev_info rev;
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 }
61 int cmd_show(int argc, const char **argv, char **envp)
62 {
63 struct rev_info rev;
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 }
78 int cmd_log(int argc, const char **argv, char **envp)
79 {
80 struct rev_info rev;
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 }
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 }
95 static char *extra_headers = NULL;
96 static int extra_headers_size = 0;
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 }
115 static FILE *realstdout = NULL;
116 static const char *output_directory = NULL;
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;
124 if (output_directory) {
125 strlcpy(filename, output_directory, 1010);
126 len = strlen(filename);
127 if (filename[len - 1] != '/')
128 filename[len++] = '/';
129 }
131 sprintf(filename + len, "%04d", nr);
132 len = strlen(filename);
134 sol = strstr(commit->buffer, "\n\n");
135 if (sol) {
136 int j, space = 1;
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 }
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 }
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 }
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];
187 if (rev->pending.nr != 2)
188 die("Need exactly one range.");
190 o1 = rev->pending.objects[0].item;
191 flags1 = o1->flags;
192 o2 = rev->pending.objects[1].item;
193 flags2 = o2->flags;
195 if ((flags1 & UNINTERESTING) == (flags2 & UNINTERESTING))
196 die("Not a range.");
198 diff_setup(options);
199 options->recursive = 1;
200 if (diff_setup_done(options) < 0)
201 die("diff_setup_done failed");
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);
211 while ((commit = get_revision(&check_rev)) != NULL) {
212 /* ignore merges */
213 if (commit->parents && commit->parents->next)
214 continue;
216 if (!get_patch_id(commit, options, sha1))
217 created_object(sha1, xcalloc(1, sizeof(struct object)));
218 }
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 }
229 static void gen_message_id(char *dest, unsigned int length, char *base)
230 {
231 const char *committer = git_committer_info(1);
232 const char *email_start = strrchr(committer, '<');
233 const char *email_end = strrchr(committer, '>');
234 if(!email_start || !email_end || email_start > email_end - 1)
235 die("Could not extract email from committer identity.");
236 snprintf(dest, length, "%s.%u.git.%.*s", base, time(NULL),
237 email_end - email_start - 1, email_start + 1);
238 }
240 int cmd_format_patch(int argc, const char **argv, char **envp)
241 {
242 struct commit *commit;
243 struct commit **list = NULL;
244 struct rev_info rev;
245 int nr = 0, total, i, j;
246 int use_stdout = 0;
247 int numbered = 0;
248 int start_number = -1;
249 int keep_subject = 0;
250 int ignore_if_in_upstream = 0;
251 int thread = 0;
252 char *in_reply_to = NULL;
253 struct diff_options patch_id_opts;
254 char *add_signoff = NULL;
255 char message_id[1024];
256 char ref_message_id[1024];
258 git_config(git_format_config);
259 init_revisions(&rev);
260 rev.commit_format = CMIT_FMT_EMAIL;
261 rev.verbose_header = 1;
262 rev.diff = 1;
263 rev.combine_merges = 0;
264 rev.ignore_merges = 1;
265 rev.diffopt.msg_sep = "";
266 rev.diffopt.recursive = 1;
268 rev.extra_headers = extra_headers;
270 /*
271 * Parse the arguments before setup_revisions(), or something
272 * like "git fmt-patch -o a123 HEAD^.." may fail; a123 is
273 * possibly a valid SHA1.
274 */
275 for (i = 1, j = 1; i < argc; i++) {
276 if (!strcmp(argv[i], "--stdout"))
277 use_stdout = 1;
278 else if (!strcmp(argv[i], "-n") ||
279 !strcmp(argv[i], "--numbered"))
280 numbered = 1;
281 else if (!strncmp(argv[i], "--start-number=", 15))
282 start_number = strtol(argv[i] + 15, NULL, 10);
283 else if (!strcmp(argv[i], "--start-number")) {
284 i++;
285 if (i == argc)
286 die("Need a number for --start-number");
287 start_number = strtol(argv[i], NULL, 10);
288 }
289 else if (!strcmp(argv[i], "-k") ||
290 !strcmp(argv[i], "--keep-subject")) {
291 keep_subject = 1;
292 rev.total = -1;
293 }
294 else if (!strcmp(argv[i], "--output-directory") ||
295 !strcmp(argv[i], "-o")) {
296 i++;
297 if (argc <= i)
298 die("Which directory?");
299 if (output_directory)
300 die("Two output directories?");
301 output_directory = argv[i];
302 }
303 else if (!strcmp(argv[i], "--signoff") ||
304 !strcmp(argv[i], "-s")) {
305 const char *committer;
306 const char *endpos;
307 setup_ident();
308 committer = git_committer_info(1);
309 endpos = strchr(committer, '>');
310 if (!endpos)
311 die("bogos committer info %s\n", committer);
312 add_signoff = xmalloc(endpos - committer + 2);
313 memcpy(add_signoff, committer, endpos - committer + 1);
314 add_signoff[endpos - committer + 1] = 0;
315 }
316 else if (!strcmp(argv[i], "--attach"))
317 rev.mime_boundary = git_version_string;
318 else if (!strncmp(argv[i], "--attach=", 9))
319 rev.mime_boundary = argv[i] + 9;
320 else if (!strcmp(argv[i], "--ignore-if-in-upstream"))
321 ignore_if_in_upstream = 1;
322 else if (!strcmp(argv[i], "--thread"))
323 thread = 1;
324 else if (!strncmp(argv[i], "--in-reply-to=", 14))
325 in_reply_to = argv[i] + 14;
326 else if (!strcmp(argv[i], "--in-reply-to")) {
327 i++;
328 if (i == argc)
329 die("Need a Message-Id for --in-reply-to");
330 in_reply_to = argv[i];
331 }
332 else
333 argv[j++] = argv[i];
334 }
335 argc = j;
337 if (start_number < 0)
338 start_number = 1;
339 if (numbered && keep_subject)
340 die ("-n and -k are mutually exclusive.");
342 argc = setup_revisions(argc, argv, &rev, "HEAD");
343 if (argc > 1)
344 die ("unrecognized argument: %s", argv[1]);
346 if (!rev.diffopt.output_format)
347 rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_PATCH;
349 if (output_directory) {
350 if (use_stdout)
351 die("standard output, or directory, which one?");
352 if (mkdir(output_directory, 0777) < 0 && errno != EEXIST)
353 die("Could not create directory %s",
354 output_directory);
355 }
357 if (rev.pending.nr == 1) {
358 rev.pending.objects[0].item->flags |= UNINTERESTING;
359 add_head(&rev);
360 }
362 if (ignore_if_in_upstream)
363 get_patch_ids(&rev, &patch_id_opts);
365 if (!use_stdout)
366 realstdout = fdopen(dup(1), "w");
368 prepare_revision_walk(&rev);
369 while ((commit = get_revision(&rev)) != NULL) {
370 unsigned char sha1[20];
372 /* ignore merges */
373 if (commit->parents && commit->parents->next)
374 continue;
376 if (ignore_if_in_upstream &&
377 !get_patch_id(commit, &patch_id_opts, sha1) &&
378 lookup_object(sha1))
379 continue;
381 nr++;
382 list = realloc(list, nr * sizeof(list[0]));
383 list[nr - 1] = commit;
384 }
385 total = nr;
386 if (numbered)
387 rev.total = total + start_number - 1;
388 rev.add_signoff = add_signoff;
389 rev.ref_message_id = in_reply_to;
390 while (0 <= --nr) {
391 int shown;
392 commit = list[nr];
393 rev.nr = total - nr + (start_number - 1);
394 /* Make the second and subsequent mails replies to the first */
395 if (thread) {
396 if (nr == (total - 2)) {
397 strncpy(ref_message_id, message_id,
398 sizeof(ref_message_id));
399 ref_message_id[sizeof(ref_message_id)-1]='\0';
400 rev.ref_message_id = ref_message_id;
401 }
402 gen_message_id(message_id, sizeof(message_id),
403 sha1_to_hex(commit->object.sha1));
404 rev.message_id = message_id;
405 }
406 if (!use_stdout)
407 reopen_stdout(commit, rev.nr, keep_subject);
408 shown = log_tree_commit(&rev, commit);
409 free(commit->buffer);
410 commit->buffer = NULL;
412 /* We put one extra blank line between formatted
413 * patches and this flag is used by log-tree code
414 * to see if it needs to emit a LF before showing
415 * the log; when using one file per patch, we do
416 * not want the extra blank line.
417 */
418 if (!use_stdout)
419 rev.shown_one = 0;
420 if (shown) {
421 if (rev.mime_boundary)
422 printf("\n--%s%s--\n\n\n",
423 mime_boundary_leader,
424 rev.mime_boundary);
425 else
426 printf("-- \n%s\n\n", git_version_string);
427 }
428 if (!use_stdout)
429 fclose(stdout);
430 }
431 free(list);
432 return 0;
433 }