Merge branch 'maint'
[git] / builtin-shortlog.c
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"
8 #include "mailmap.h"
9
10 static const char shortlog_usage[] =
11 "git-shortlog [-n] [-s] [<commit-id>... ]";
12
13 static char *common_repo_prefix;
14
15 static int compare_by_number(const void *a1, const void *a2)
16 {
17         const struct path_list_item *i1 = a1, *i2 = a2;
18         const struct path_list *l1 = i1->util, *l2 = i2->util;
19
20         if (l1->nr < l2->nr)
21                 return 1;
22         else if (l1->nr == l2->nr)
23                 return 0;
24         else
25                 return -1;
26 }
27
28 static struct path_list mailmap = {NULL, 0, 0, 0};
29
30 static void insert_author_oneline(struct path_list *list,
31                 const char *author, int authorlen,
32                 const char *oneline, int onelinelen)
33 {
34         const char *dot3 = common_repo_prefix;
35         char *buffer, *p;
36         struct path_list_item *item;
37         struct path_list *onelines;
38
39         while (authorlen > 0 && isspace(author[authorlen - 1]))
40                 authorlen--;
41
42         buffer = xmalloc(authorlen + 1);
43         memcpy(buffer, author, authorlen);
44         buffer[authorlen] = '\0';
45
46         item = path_list_insert(buffer, list);
47         if (item->util == NULL)
48                 item->util = xcalloc(1, sizeof(struct path_list));
49         else
50                 free(buffer);
51
52         if (!prefixcmp(oneline, "[PATCH")) {
53                 char *eob = strchr(oneline, ']');
54
55                 if (eob) {
56                         while (isspace(eob[1]) && eob[1] != '\n')
57                                 eob++;
58                         if (eob - oneline < onelinelen) {
59                                 onelinelen -= eob - oneline;
60                                 oneline = eob;
61                         }
62                 }
63         }
64
65         while (onelinelen > 0 && isspace(oneline[0])) {
66                 oneline++;
67                 onelinelen--;
68         }
69
70         while (onelinelen > 0 && isspace(oneline[onelinelen - 1]))
71                 onelinelen--;
72
73         buffer = xmalloc(onelinelen + 1);
74         memcpy(buffer, oneline, onelinelen);
75         buffer[onelinelen] = '\0';
76
77         if (dot3) {
78                 int dot3len = strlen(dot3);
79                 if (dot3len > 5) {
80                         while ((p = strstr(buffer, dot3)) != NULL) {
81                                 int taillen = strlen(p) - dot3len;
82                                 memcpy(p, "/.../", 5);
83                                 memmove(p + 5, p + dot3len, taillen + 1);
84                         }
85                 }
86         }
87
88         onelines = item->util;
89         if (onelines->nr >= onelines->alloc) {
90                 onelines->alloc = alloc_nr(onelines->nr);
91                 onelines->items = xrealloc(onelines->items,
92                                 onelines->alloc
93                                 * sizeof(struct path_list_item));
94         }
95
96         onelines->items[onelines->nr].util = NULL;
97         onelines->items[onelines->nr++].path = buffer;
98 }
99
100 static void read_from_stdin(struct path_list *list)
101 {
102         char buffer[1024];
103
104         while (fgets(buffer, sizeof(buffer), stdin) != NULL) {
105                 char *bob;
106                 if ((buffer[0] == 'A' || buffer[0] == 'a') &&
107                                 !prefixcmp(buffer + 1, "uthor: ") &&
108                                 (bob = strchr(buffer + 7, '<')) != NULL) {
109                         char buffer2[1024], offset = 0;
110
111                         if (map_email(&mailmap, bob + 1, buffer, sizeof(buffer)))
112                                 bob = buffer + strlen(buffer);
113                         else {
114                                 offset = 8;
115                                 while (buffer + offset < bob &&
116                                        isspace(bob[-1]))
117                                         bob--;
118                         }
119
120                         while (fgets(buffer2, sizeof(buffer2), stdin) &&
121                                         buffer2[0] != '\n')
122                                 ; /* chomp input */
123                         if (fgets(buffer2, sizeof(buffer2), stdin)) {
124                                 int l2 = strlen(buffer2);
125                                 int i;
126                                 for (i = 0; i < l2; i++)
127                                         if (!isspace(buffer2[i]))
128                                                 break;
129                                 insert_author_oneline(list,
130                                                 buffer + offset,
131                                                 bob - buffer - offset,
132                                                 buffer2 + i, l2 - i);
133                         }
134                 }
135         }
136 }
137
138 static void get_from_rev(struct rev_info *rev, struct path_list *list)
139 {
140         char scratch[1024];
141         struct commit *commit;
142
143         prepare_revision_walk(rev);
144         while ((commit = get_revision(rev)) != NULL) {
145                 const char *author = NULL, *oneline, *buffer;
146                 int authorlen = authorlen, onelinelen;
147
148                 /* get author and oneline */
149                 for (buffer = commit->buffer; buffer && *buffer != '\0' &&
150                                 *buffer != '\n'; ) {
151                         const char *eol = strchr(buffer, '\n');
152
153                         if (eol == NULL)
154                                 eol = buffer + strlen(buffer);
155                         else
156                                 eol++;
157
158                         if (!prefixcmp(buffer, "author ")) {
159                                 char *bracket = strchr(buffer, '<');
160
161                                 if (bracket == NULL || bracket > eol)
162                                         die("Invalid commit buffer: %s",
163                                             sha1_to_hex(commit->object.sha1));
164
165                                 if (map_email(&mailmap, bracket + 1, scratch,
166                                                         sizeof(scratch))) {
167                                         author = scratch;
168                                         authorlen = strlen(scratch);
169                                 } else {
170                                         if (bracket[-1] == ' ')
171                                                 bracket--;
172
173                                         author = buffer + 7;
174                                         authorlen = bracket - buffer - 7;
175                                 }
176                         }
177                         buffer = eol;
178                 }
179
180                 if (author == NULL)
181                         die ("Missing author: %s",
182                                         sha1_to_hex(commit->object.sha1));
183
184                 if (buffer == NULL || *buffer == '\0') {
185                         oneline = "<none>";
186                         onelinelen = sizeof(oneline) + 1;
187                 } else {
188                         char *eol;
189
190                         oneline = buffer + 1;
191                         eol = strchr(oneline, '\n');
192                         if (eol == NULL)
193                                 onelinelen = strlen(oneline);
194                         else
195                                 onelinelen = eol - oneline;
196                 }
197
198                 insert_author_oneline(list,
199                                 author, authorlen, oneline, onelinelen);
200         }
201
202 }
203
204 static int parse_uint(char const **arg, int comma)
205 {
206         unsigned long ul;
207         int ret;
208         char *endp;
209
210         ul = strtoul(*arg, &endp, 10);
211         if (endp != *arg && *endp && *endp != comma)
212                 return -1;
213         ret = (int) ul;
214         if (ret != ul)
215                 return -1;
216         *arg = endp;
217         if (**arg)
218                 (*arg)++;
219         return ret;
220 }
221
222 static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
223 #define DEFAULT_WRAPLEN 76
224 #define DEFAULT_INDENT1 6
225 #define DEFAULT_INDENT2 9
226
227 static void parse_wrap_args(const char *arg, int *in1, int *in2, int *wrap)
228 {
229         arg += 2; /* skip -w */
230
231         *wrap = parse_uint(&arg, ',');
232         if (*wrap < 0)
233                 die(wrap_arg_usage);
234         *in1 = parse_uint(&arg, ',');
235         if (*in1 < 0)
236                 die(wrap_arg_usage);
237         *in2 = parse_uint(&arg, '\0');
238         if (*in2 < 0)
239                 die(wrap_arg_usage);
240
241         if (!*wrap)
242                 *wrap = DEFAULT_WRAPLEN;
243         if (!*in1)
244                 *in1 = DEFAULT_INDENT1;
245         if (!*in2)
246                 *in2 = DEFAULT_INDENT2;
247         if (*wrap &&
248             ((*in1 && *wrap <= *in1) ||
249              (*in2 && *wrap <= *in2)))
250                 die(wrap_arg_usage);
251 }
252
253 int cmd_shortlog(int argc, const char **argv, const char *prefix)
254 {
255         struct rev_info rev;
256         struct path_list list = { NULL, 0, 0, 1 };
257         int i, j, sort_by_number = 0, summary = 0;
258         int wrap_lines = 0;
259         int wrap = DEFAULT_WRAPLEN;
260         int in1 = DEFAULT_INDENT1;
261         int in2 = DEFAULT_INDENT2;
262
263         /* since -n is a shadowed rev argument, parse our args first */
264         while (argc > 1) {
265                 if (!strcmp(argv[1], "-n") || !strcmp(argv[1], "--numbered"))
266                         sort_by_number = 1;
267                 else if (!strcmp(argv[1], "-s") ||
268                                 !strcmp(argv[1], "--summary"))
269                         summary = 1;
270                 else if (!prefixcmp(argv[1], "-w")) {
271                         wrap_lines = 1;
272                         parse_wrap_args(argv[1], &in1, &in2, &wrap);
273                 }
274                 else if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
275                         usage(shortlog_usage);
276                 else
277                         break;
278                 argv++;
279                 argc--;
280         }
281         init_revisions(&rev, prefix);
282         argc = setup_revisions(argc, argv, &rev, NULL);
283         if (argc > 1)
284                 die ("unrecognized argument: %s", argv[1]);
285
286         read_mailmap(&mailmap, ".mailmap", &common_repo_prefix);
287
288         if (rev.pending.nr == 0) {
289                 if (isatty(0))
290                         fprintf(stderr, "(reading log to summarize from standard input)\n");
291                 read_from_stdin(&list);
292         }
293         else
294                 get_from_rev(&rev, &list);
295
296         if (sort_by_number)
297                 qsort(list.items, list.nr, sizeof(struct path_list_item),
298                         compare_by_number);
299
300         for (i = 0; i < list.nr; i++) {
301                 struct path_list *onelines = list.items[i].util;
302
303                 if (summary) {
304                         printf("%s: %d\n", list.items[i].path, onelines->nr);
305                 } else {
306                         printf("%s (%d):\n", list.items[i].path, onelines->nr);
307                         for (j = onelines->nr - 1; j >= 0; j--) {
308                                 const char *msg = onelines->items[j].path;
309
310                                 if (wrap_lines) {
311                                         int col = print_wrapped_text(msg, in1, in2, wrap);
312                                         if (col != wrap)
313                                                 putchar('\n');
314                                 }
315                                 else
316                                         printf("      %s\n", msg);
317                         }
318                         putchar('\n');
319                 }
320
321                 onelines->strdup_paths = 1;
322                 path_list_clear(onelines, 1);
323                 free(onelines);
324                 list.items[i].util = NULL;
325         }
326
327         list.strdup_paths = 1;
328         path_list_clear(&list, 1);
329         mailmap.strdup_paths = 1;
330         path_list_clear(&mailmap, 1);
331
332         return 0;
333 }