Remove pointless calls to access(2) when checking for .mailmap
[git/git.git] / builtin-shortlog.c
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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"
3714e7c8 7#include "utf8.h"
7c1c6782 8#include "mailmap.h"
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9
10static const char shortlog_usage[] =
ac60c94d 11"git-shortlog [-n] [-s] [<commit-id>... ]";
b8ec5923 12
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13static char *common_repo_prefix;
14
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15static 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)
6d6ab610 21 return 1;
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22 else if (l1->nr == l2->nr)
23 return 0;
24 else
6d6ab610 25 return -1;
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26}
27
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28static struct path_list mailmap = {NULL, 0, 0, 0};
29
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30static void insert_author_oneline(struct path_list *list,
31 const char *author, int authorlen,
32 const char *oneline, int onelinelen)
33{
7595e2ee 34 const char *dot3 = common_repo_prefix;
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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
cc44c765 52 if (!prefixcmp(oneline, "[PATCH")) {
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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 }
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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
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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 }
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86 }
87
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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
100static 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') &&
cc44c765 107 !prefixcmp(buffer + 1, "uthor: ") &&
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108 (bob = strchr(buffer + 7, '<')) != NULL) {
109 char buffer2[1024], offset = 0;
110
7c1c6782 111 if (map_email(&mailmap, bob + 1, buffer, sizeof(buffer)))
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112 bob = buffer + strlen(buffer);
113 else {
114 offset = 8;
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115 while (buffer + offset < bob &&
116 isspace(bob[-1]))
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117 bob--;
118 }
119
120 while (fgets(buffer2, sizeof(buffer2), stdin) &&
121 buffer2[0] != '\n')
122 ; /* chomp input */
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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;
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129 insert_author_oneline(list,
130 buffer + offset,
131 bob - buffer - offset,
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132 buffer2 + i, l2 - i);
133 }
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134 }
135 }
136}
137
138static 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) {
3a55602e 145 const char *author = NULL, *oneline, *buffer;
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146 int authorlen = authorlen, onelinelen;
147
148 /* get author and oneline */
149 for (buffer = commit->buffer; buffer && *buffer != '\0' &&
150 *buffer != '\n'; ) {
3a55602e 151 const char *eol = strchr(buffer, '\n');
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152
153 if (eol == NULL)
154 eol = buffer + strlen(buffer);
155 else
156 eol++;
157
cc44c765 158 if (!prefixcmp(buffer, "author ")) {
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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
7c1c6782 165 if (map_email(&mailmap, bracket + 1, scratch,
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166 sizeof(scratch))) {
167 author = scratch;
168 authorlen = strlen(scratch);
169 } else {
90ffefe5 170 if (bracket[-1] == ' ')
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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
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204static 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
222static 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
227static 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
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253int 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;
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258 int wrap_lines = 0;
259 int wrap = DEFAULT_WRAPLEN;
260 int in1 = DEFAULT_INDENT1;
261 int in2 = DEFAULT_INDENT2;
b8ec5923 262
6d6ab610 263 /* since -n is a shadowed rev argument, parse our args first */
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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;
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270 else if (!prefixcmp(argv[1], "-w")) {
271 wrap_lines = 1;
272 parse_wrap_args(argv[1], &in1, &in2, &wrap);
273 }
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274 else if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))
275 usage(shortlog_usage);
276 else
6d6ab610 277 break;
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278 argv++;
279 argc--;
280 }
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281 init_revisions(&rev, prefix);
282 argc = setup_revisions(argc, argv, &rev, NULL);
283 if (argc > 1)
284 die ("unrecognized argument: %s", argv[1]);
b8ec5923 285
e44b5d10 286 read_mailmap(&mailmap, ".mailmap", &common_repo_prefix);
d8e81250 287
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288 if (rev.pending.nr == 0) {
289 if (isatty(0))
290 fprintf(stderr, "(reading log to summarize from standard input)\n");
b8ec5923 291 read_from_stdin(&list);
0497c620 292 }
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293 else
294 get_from_rev(&rev, &list);
295
296 if (sort_by_number)
6d6ab610 297 qsort(list.items, list.nr, sizeof(struct path_list_item),
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298 compare_by_number);
299
300 for (i = 0; i < list.nr; i++) {
301 struct path_list *onelines = list.items[i].util;
302
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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);
3714e7c8 307 for (j = onelines->nr - 1; j >= 0; j--) {
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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);
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317 }
318 putchar('\n');
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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);
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329 mailmap.strdup_paths = 1;
330 path_list_clear(&mailmap, 1);
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331
332 return 0;
333}
334