Merge branch 'maint'
[git/dkf.git] / builtin-shortlog.c
blob3f93498bb711ccaf1f8a1ad5ed9ac8e02958d357
1 #include "builtin.h"
2 #include "cache.h"
3 #include "commit.h"
4 #include "diff.h"
5 #include "path-list.h"
6 #include "revision.h"
7 #include "utf8.h"
9 static const char shortlog_usage[] =
10 "git-shortlog [-n] [-s] [<commit-id>... ]";
12 static char *common_repo_prefix;
14 static int compare_by_number(const void *a1, const void *a2)
16 const struct path_list_item *i1 = a1, *i2 = a2;
17 const struct path_list *l1 = i1->util, *l2 = i2->util;
19 if (l1->nr < l2->nr)
20 return 1;
21 else if (l1->nr == l2->nr)
22 return 0;
23 else
24 return -1;
27 static struct path_list mailmap = {NULL, 0, 0, 0};
29 static int read_mailmap(const char *filename)
31 char buffer[1024];
32 FILE *f = fopen(filename, "r");
34 if (f == NULL)
35 return 1;
36 while (fgets(buffer, sizeof(buffer), f) != NULL) {
37 char *end_of_name, *left_bracket, *right_bracket;
38 char *name, *email;
39 int i;
40 if (buffer[0] == '#') {
41 static const char abbrev[] = "# repo-abbrev:";
42 int abblen = sizeof(abbrev) - 1;
43 int len = strlen(buffer);
45 if (len && buffer[len - 1] == '\n')
46 buffer[--len] = 0;
47 if (!strncmp(buffer, abbrev, abblen)) {
48 char *cp;
50 if (common_repo_prefix)
51 free(common_repo_prefix);
52 common_repo_prefix = xmalloc(len);
54 for (cp = buffer + abblen; isspace(*cp); cp++)
55 ; /* nothing */
56 strcpy(common_repo_prefix, cp);
58 continue;
60 if ((left_bracket = strchr(buffer, '<')) == NULL)
61 continue;
62 if ((right_bracket = strchr(left_bracket + 1, '>')) == NULL)
63 continue;
64 if (right_bracket == left_bracket + 1)
65 continue;
66 for (end_of_name = left_bracket; end_of_name != buffer
67 && isspace(end_of_name[-1]); end_of_name--)
68 /* keep on looking */
69 if (end_of_name == buffer)
70 continue;
71 name = xmalloc(end_of_name - buffer + 1);
72 strlcpy(name, buffer, end_of_name - buffer + 1);
73 email = xmalloc(right_bracket - left_bracket);
74 for (i = 0; i < right_bracket - left_bracket - 1; i++)
75 email[i] = tolower(left_bracket[i + 1]);
76 email[right_bracket - left_bracket - 1] = '\0';
77 path_list_insert(email, &mailmap)->util = name;
79 fclose(f);
80 return 0;
83 static int map_email(char *email, char *name, int maxlen)
85 char *p;
86 struct path_list_item *item;
88 /* autocomplete common developers */
89 p = strchr(email, '>');
90 if (!p)
91 return 0;
93 *p = '\0';
94 /* downcase the email address */
95 for (p = email; *p; p++)
96 *p = tolower(*p);
97 item = path_list_lookup(email, &mailmap);
98 if (item != NULL) {
99 const char *realname = (const char *)item->util;
100 strncpy(name, realname, maxlen);
101 return 1;
103 return 0;
106 static void insert_author_oneline(struct path_list *list,
107 const char *author, int authorlen,
108 const char *oneline, int onelinelen)
110 const char *dot3 = common_repo_prefix;
111 char *buffer, *p;
112 struct path_list_item *item;
113 struct path_list *onelines;
115 while (authorlen > 0 && isspace(author[authorlen - 1]))
116 authorlen--;
118 buffer = xmalloc(authorlen + 1);
119 memcpy(buffer, author, authorlen);
120 buffer[authorlen] = '\0';
122 item = path_list_insert(buffer, list);
123 if (item->util == NULL)
124 item->util = xcalloc(1, sizeof(struct path_list));
125 else
126 free(buffer);
128 if (!prefixcmp(oneline, "[PATCH")) {
129 char *eob = strchr(oneline, ']');
131 if (eob) {
132 while (isspace(eob[1]) && eob[1] != '\n')
133 eob++;
134 if (eob - oneline < onelinelen) {
135 onelinelen -= eob - oneline;
136 oneline = eob;
141 while (onelinelen > 0 && isspace(oneline[0])) {
142 oneline++;
143 onelinelen--;
146 while (onelinelen > 0 && isspace(oneline[onelinelen - 1]))
147 onelinelen--;
149 buffer = xmalloc(onelinelen + 1);
150 memcpy(buffer, oneline, onelinelen);
151 buffer[onelinelen] = '\0';
153 if (dot3) {
154 int dot3len = strlen(dot3);
155 if (dot3len > 5) {
156 while ((p = strstr(buffer, dot3)) != NULL) {
157 int taillen = strlen(p) - dot3len;
158 memcpy(p, "/.../", 5);
159 memmove(p + 5, p + dot3len, taillen + 1);
164 onelines = item->util;
165 if (onelines->nr >= onelines->alloc) {
166 onelines->alloc = alloc_nr(onelines->nr);
167 onelines->items = xrealloc(onelines->items,
168 onelines->alloc
169 * sizeof(struct path_list_item));
172 onelines->items[onelines->nr].util = NULL;
173 onelines->items[onelines->nr++].path = buffer;
176 static void read_from_stdin(struct path_list *list)
178 char buffer[1024];
180 while (fgets(buffer, sizeof(buffer), stdin) != NULL) {
181 char *bob;
182 if ((buffer[0] == 'A' || buffer[0] == 'a') &&
183 !prefixcmp(buffer + 1, "uthor: ") &&
184 (bob = strchr(buffer + 7, '<')) != NULL) {
185 char buffer2[1024], offset = 0;
187 if (map_email(bob + 1, buffer, sizeof(buffer)))
188 bob = buffer + strlen(buffer);
189 else {
190 offset = 8;
191 while (buffer + offset < bob &&
192 isspace(bob[-1]))
193 bob--;
196 while (fgets(buffer2, sizeof(buffer2), stdin) &&
197 buffer2[0] != '\n')
198 ; /* chomp input */
199 if (fgets(buffer2, sizeof(buffer2), stdin)) {
200 int l2 = strlen(buffer2);
201 int i;
202 for (i = 0; i < l2; i++)
203 if (!isspace(buffer2[i]))
204 break;
205 insert_author_oneline(list,
206 buffer + offset,
207 bob - buffer - offset,
208 buffer2 + i, l2 - i);
214 static void get_from_rev(struct rev_info *rev, struct path_list *list)
216 char scratch[1024];
217 struct commit *commit;
219 prepare_revision_walk(rev);
220 while ((commit = get_revision(rev)) != NULL) {
221 const char *author = NULL, *oneline, *buffer;
222 int authorlen = authorlen, onelinelen;
224 /* get author and oneline */
225 for (buffer = commit->buffer; buffer && *buffer != '\0' &&
226 *buffer != '\n'; ) {
227 const char *eol = strchr(buffer, '\n');
229 if (eol == NULL)
230 eol = buffer + strlen(buffer);
231 else
232 eol++;
234 if (!prefixcmp(buffer, "author ")) {
235 char *bracket = strchr(buffer, '<');
237 if (bracket == NULL || bracket > eol)
238 die("Invalid commit buffer: %s",
239 sha1_to_hex(commit->object.sha1));
241 if (map_email(bracket + 1, scratch,
242 sizeof(scratch))) {
243 author = scratch;
244 authorlen = strlen(scratch);
245 } else {
246 if (bracket[-1] == ' ')
247 bracket--;
249 author = buffer + 7;
250 authorlen = bracket - buffer - 7;
253 buffer = eol;
256 if (author == NULL)
257 die ("Missing author: %s",
258 sha1_to_hex(commit->object.sha1));
260 if (buffer == NULL || *buffer == '\0') {
261 oneline = "<none>";
262 onelinelen = sizeof(oneline) + 1;
263 } else {
264 char *eol;
266 oneline = buffer + 1;
267 eol = strchr(oneline, '\n');
268 if (eol == NULL)
269 onelinelen = strlen(oneline);
270 else
271 onelinelen = eol - oneline;
274 insert_author_oneline(list,
275 author, authorlen, oneline, onelinelen);
280 static int parse_uint(char const **arg, int comma)
282 unsigned long ul;
283 int ret;
284 char *endp;
286 ul = strtoul(*arg, &endp, 10);
287 if (endp != *arg && *endp && *endp != comma)
288 return -1;
289 ret = (int) ul;
290 if (ret != ul)
291 return -1;
292 *arg = endp;
293 if (**arg)
294 (*arg)++;
295 return ret;
298 static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
299 #define DEFAULT_WRAPLEN 76
300 #define DEFAULT_INDENT1 6
301 #define DEFAULT_INDENT2 9
303 static void parse_wrap_args(const char *arg, int *in1, int *in2, int *wrap)
305 arg += 2; /* skip -w */
307 *wrap = parse_uint(&arg, ',');
308 if (*wrap < 0)
309 die(wrap_arg_usage);
310 *in1 = parse_uint(&arg, ',');
311 if (*in1 < 0)
312 die(wrap_arg_usage);
313 *in2 = parse_uint(&arg, '\0');
314 if (*in2 < 0)
315 die(wrap_arg_usage);
317 if (!*wrap)
318 *wrap = DEFAULT_WRAPLEN;
319 if (!*in1)
320 *in1 = DEFAULT_INDENT1;
321 if (!*in2)
322 *in2 = DEFAULT_INDENT2;
323 if (*wrap &&
324 ((*in1 && *wrap <= *in1) ||
325 (*in2 && *wrap <= *in2)))
326 die(wrap_arg_usage);
329 int cmd_shortlog(int argc, const char **argv, const char *prefix)
331 struct rev_info rev;
332 struct path_list list = { NULL, 0, 0, 1 };
333 int i, j, sort_by_number = 0, summary = 0;
334 int wrap_lines = 0;
335 int wrap = DEFAULT_WRAPLEN;
336 int in1 = DEFAULT_INDENT1;
337 int in2 = DEFAULT_INDENT2;
339 /* since -n is a shadowed rev argument, parse our args first */
340 while (argc > 1) {
341 if (!strcmp(argv[1], "-n") || !strcmp(argv[1], "--numbered"))
342 sort_by_number = 1;
343 else if (!strcmp(argv[1], "-s") ||
344 !strcmp(argv[1], "--summary"))
345 summary = 1;
346 else if (!prefixcmp(argv[1], "-w")) {
347 wrap_lines = 1;
348 parse_wrap_args(argv[1], &in1, &in2, &wrap);
350 else if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
351 usage(shortlog_usage);
352 else
353 break;
354 argv++;
355 argc--;
357 init_revisions(&rev, prefix);
358 argc = setup_revisions(argc, argv, &rev, NULL);
359 if (argc > 1)
360 die ("unrecognized argument: %s", argv[1]);
362 if (!access(".mailmap", R_OK))
363 read_mailmap(".mailmap");
365 if (rev.pending.nr == 0) {
366 if (isatty(0))
367 fprintf(stderr, "(reading log to summarize from standard input)\n");
368 read_from_stdin(&list);
370 else
371 get_from_rev(&rev, &list);
373 if (sort_by_number)
374 qsort(list.items, list.nr, sizeof(struct path_list_item),
375 compare_by_number);
377 for (i = 0; i < list.nr; i++) {
378 struct path_list *onelines = list.items[i].util;
380 if (summary) {
381 printf("%s: %d\n", list.items[i].path, onelines->nr);
382 } else {
383 printf("%s (%d):\n", list.items[i].path, onelines->nr);
384 for (j = onelines->nr - 1; j >= 0; j--) {
385 const char *msg = onelines->items[j].path;
387 if (wrap_lines) {
388 int col = print_wrapped_text(msg, in1, in2, wrap);
389 if (col != wrap)
390 putchar('\n');
392 else
393 printf(" %s\n", msg);
395 putchar('\n');
398 onelines->strdup_paths = 1;
399 path_list_clear(onelines, 1);
400 free(onelines);
401 list.items[i].util = NULL;
404 list.strdup_paths = 1;
405 path_list_clear(&list, 1);
406 mailmap.strdup_paths = 1;
407 path_list_clear(&mailmap, 1);
409 return 0;