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chromium / external / github.com / git / git / refs/tags/v2.4.3 / . / mailmap.c
blob: 9e9589730fa44c94d122dfdb50172baf95e2578d [file] [log] [blame]
Junio C Hamano7c1c6782007-04-27 07:41:15[diff] [blame]1#include "cache.h"
Johannes Schindelinc455c872008-07-21 18:03:49[diff] [blame]2#include "string-list.h"
Alex Riesenfe5d30b2007-04-30 22:31:52[diff] [blame]3#include "mailmap.h"
Junio C Hamano7c1c6782007-04-27 07:41:15[diff] [blame]4
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]5#define DEBUG_MAILMAP 0
6#if DEBUG_MAILMAP
7#define debug_mm(...) fprintf(stderr, __VA_ARGS__)
Eric Sunshinefbfba7a2013-07-15 06:54:12[diff] [blame]8#define debug_str(X) ((X) ? (X) : "(none)")
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]9#else
10static inline void debug_mm(const char *format, ...) {}
Eric Sunshinefbfba7a2013-07-15 06:54:12[diff] [blame]11static inline const char *debug_str(const char *s) { return s; }
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]12#endif
13
Marius Storm-Olsend551a482009-02-08 14:34:27[diff] [blame]14const char *git_mailmap_file;
Jeff King08610902012-12-12 11:04:04[diff] [blame]15const char *git_mailmap_blob;
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]16
17struct mailmap_info {
18 char *name;
19 char *email;
20};
21
22struct mailmap_entry {
23 /* name and email for the simple mail-only case */
24 char *name;
25 char *email;
26
27 /* name and email for the complex mail and name matching case */
28 struct string_list namemap;
29};
30
31static void free_mailmap_info(void *p, const char *s)
32{
33 struct mailmap_info *mi = (struct mailmap_info *)p;
Junio C Hamanobd237942013-07-15 06:54:13[diff] [blame]34 debug_mm("mailmap: -- complex: '%s' -> '%s' <%s>\n",
35 s, debug_str(mi->name), debug_str(mi->email));
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]36 free(mi->name);
37 free(mi->email);
38}
39
40static void free_mailmap_entry(void *p, const char *s)
41{
42 struct mailmap_entry *me = (struct mailmap_entry *)p;
Junio C Hamanobd237942013-07-15 06:54:13[diff] [blame]43 debug_mm("mailmap: removing entries for <%s>, with %d sub-entries\n",
44 s, me->namemap.nr);
45 debug_mm("mailmap: - simple: '%s' <%s>\n",
46 debug_str(me->name), debug_str(me->email));
Eric Sunshinefbfba7a2013-07-15 06:54:12[diff] [blame]47
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]48 free(me->name);
49 free(me->email);
50
51 me->namemap.strdup_strings = 1;
52 string_list_clear_func(&me->namemap, free_mailmap_info);
53}
54
Junio C Hamanode2f95e2013-09-12 15:37:08[diff] [blame]55/*
56 * On some systems (e.g. MinGW 4.0), string.h has _only_ inline
57 * definition of strcasecmp and no non-inline implementation is
58 * supplied anywhere, which is, eh, "unusual"; we cannot take an
59 * address of such a function to store it in namemap.cmp. This is
60 * here as a workaround---do not assign strcasecmp directly to
61 * namemap.cmp until we know no systems that matter have such an
62 * "unusual" string.h.
63 */
64static int namemap_cmp(const char *a, const char *b)
65{
66 return strcasecmp(a, b);
67}
68
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]69static void add_mapping(struct string_list *map,
Junio C Hamanobd237942013-07-15 06:54:13[diff] [blame]70 char *new_name, char *new_email,
71 char *old_name, char *old_email)
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]72{
73 struct mailmap_entry *me;
Stefan Beller63226212014-11-25 03:44:14[diff] [blame]74 struct string_list_item *item;
Johannes Schindelinbf637802009-03-31 00:18:36[diff] [blame]75
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]76 if (old_email == NULL) {
77 old_email = new_email;
78 new_email = NULL;
79 }
80
Stefan Beller63226212014-11-25 03:44:14[diff] [blame]81 item = string_list_insert(map, old_email);
82 if (item->util) {
83 me = (struct mailmap_entry *)item->util;
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]84 } else {
Junio C Hamano97e751b2013-07-15 06:54:08[diff] [blame]85 me = xcalloc(1, sizeof(struct mailmap_entry));
86 me->namemap.strdup_strings = 1;
Junio C Hamanode2f95e2013-09-12 15:37:08[diff] [blame]87 me->namemap.cmp = namemap_cmp;
Junio C Hamano97e751b2013-07-15 06:54:08[diff] [blame]88 item->util = me;
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]89 }
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]90
91 if (old_name == NULL) {
Stefan Beller63226212014-11-25 03:44:14[diff] [blame]92 debug_mm("mailmap: adding (simple) entry for '%s'\n", old_email);
93
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]94 /* Replace current name and new email for simple entry */
Jim Meyeringd8d2eb72010-10-11 15:41:16[diff] [blame]95 if (new_name) {
96 free(me->name);
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]97 me->name = xstrdup(new_name);
Jim Meyeringd8d2eb72010-10-11 15:41:16[diff] [blame]98 }
99 if (new_email) {
100 free(me->email);
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]101 me->email = xstrdup(new_email);
Jim Meyeringd8d2eb72010-10-11 15:41:16[diff] [blame]102 }
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]103 } else {
Marc-André Lureau74b531f2011-11-17 01:25:06[diff] [blame]104 struct mailmap_info *mi = xcalloc(1, sizeof(struct mailmap_info));
Stefan Beller63226212014-11-25 03:44:14[diff] [blame]105 debug_mm("mailmap: adding (complex) entry for '%s'\n", old_email);
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]106 if (new_name)
107 mi->name = xstrdup(new_name);
108 if (new_email)
109 mi->email = xstrdup(new_email);
Julian Phillips78a395d2010-06-25 23:41:35[diff] [blame]110 string_list_insert(&me->namemap, old_name)->util = mi;
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]111 }
112
113 debug_mm("mailmap: '%s' <%s> -> '%s' <%s>\n",
Junio C Hamanobd237942013-07-15 06:54:13[diff] [blame]114 debug_str(old_name), old_email,
115 debug_str(new_name), debug_str(new_email));
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]116}
117
Björn Steinbrink5288dd52009-03-31 15:30:39[diff] [blame]118static char *parse_name_and_email(char *buffer, char **name,
Junio C Hamanobd237942013-07-15 06:54:13[diff] [blame]119 char **email, int allow_empty_email)
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]120{
121 char *left, *right, *nstart, *nend;
Linus Torvalds2af202b2009-06-18 17:28:43[diff] [blame]122 *name = *email = NULL;
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]123
124 if ((left = strchr(buffer, '<')) == NULL)
125 return NULL;
126 if ((right = strchr(left+1, '>')) == NULL)
127 return NULL;
Björn Steinbrink5288dd52009-03-31 15:30:39[diff] [blame]128 if (!allow_empty_email && (left+1 == right))
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]129 return NULL;
130
131 /* remove whitespace from beginning and end of name */
132 nstart = buffer;
133 while (isspace(*nstart) && nstart < left)
134 ++nstart;
135 nend = left-1;
Romain Francoise3174bc52012-10-27 22:49:55[diff] [blame]136 while (nend > nstart && isspace(*nend))
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]137 --nend;
138
Junio C Hamano8c381152013-07-15 06:54:06[diff] [blame]139 *name = (nstart <= nend ? nstart : NULL);
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]140 *email = left+1;
141 *(nend+1) = '\0';
142 *right++ = '\0';
143
144 return (*right == '\0' ? NULL : right);
145}
146
Jeff King7c8ce302012-12-12 10:59:45[diff] [blame]147static void read_mailmap_line(struct string_list *map, char *buffer,
148 char **repo_abbrev)
149{
150 char *name1 = NULL, *email1 = NULL, *name2 = NULL, *email2 = NULL;
151 if (buffer[0] == '#') {
152 static const char abbrev[] = "# repo-abbrev:";
153 int abblen = sizeof(abbrev) - 1;
154 int len = strlen(buffer);
155
156 if (!repo_abbrev)
157 return;
158
159 if (len && buffer[len - 1] == '\n')
160 buffer[--len] = 0;
161 if (!strncmp(buffer, abbrev, abblen)) {
162 char *cp;
163
Stefan Bellerc9ba31f2013-08-20 14:18:00[diff] [blame]164 free(*repo_abbrev);
Jeff King7c8ce302012-12-12 10:59:45[diff] [blame]165 *repo_abbrev = xmalloc(len);
166
167 for (cp = buffer + abblen; isspace(*cp); cp++)
168 ; /* nothing */
169 strcpy(*repo_abbrev, cp);
170 }
171 return;
172 }
173 if ((name2 = parse_name_and_email(buffer, &name1, &email1, 0)) != NULL)
174 parse_name_and_email(name2, &name2, &email2, 1);
175
176 if (email1)
177 add_mapping(map, name1, email1, name2, email2);
178}
179
180static int read_mailmap_file(struct string_list *map, const char *filename,
181 char **repo_abbrev)
Junio C Hamano7c1c6782007-04-27 07:41:15[diff] [blame]182{
183 char buffer[1024];
Jeff King938a60d2012-12-12 11:18:02[diff] [blame]184 FILE *f;
Junio C Hamano7c1c6782007-04-27 07:41:15[diff] [blame]185
Jeff King938a60d2012-12-12 11:18:02[diff] [blame]186 if (!filename)
187 return 0;
188
189 f = fopen(filename, "r");
190 if (!f) {
191 if (errno == ENOENT)
192 return 0;
193 return error("unable to open mailmap at %s: %s",
194 filename, strerror(errno));
195 }
196
Jeff King7c8ce302012-12-12 10:59:45[diff] [blame]197 while (fgets(buffer, sizeof(buffer), f) != NULL)
198 read_mailmap_line(map, buffer, repo_abbrev);
Junio C Hamano7c1c6782007-04-27 07:41:15[diff] [blame]199 fclose(f);
200 return 0;
201}
202
Jeff Kingf972a162013-08-28 01:41:39[diff] [blame]203static void read_mailmap_string(struct string_list *map, char *buf,
204 char **repo_abbrev)
Jeff King08610902012-12-12 11:04:04[diff] [blame]205{
Jeff Kingf972a162013-08-28 01:41:39[diff] [blame]206 while (*buf) {
207 char *end = strchrnul(buf, '\n');
Jeff King08610902012-12-12 11:04:04[diff] [blame]208
Jeff Kingf972a162013-08-28 01:41:39[diff] [blame]209 if (*end)
210 *end++ = '\0';
Jeff King08610902012-12-12 11:04:04[diff] [blame]211
Jeff Kingf972a162013-08-28 01:41:39[diff] [blame]212 read_mailmap_line(map, buf, repo_abbrev);
213 buf = end;
Jeff King08610902012-12-12 11:04:04[diff] [blame]214 }
215}
216
217static int read_mailmap_blob(struct string_list *map,
218 const char *name,
219 char **repo_abbrev)
220{
221 unsigned char sha1[20];
222 char *buf;
223 unsigned long size;
224 enum object_type type;
225
226 if (!name)
Jeff King938a60d2012-12-12 11:18:02[diff] [blame]227 return 0;
Jeff King08610902012-12-12 11:04:04[diff] [blame]228 if (get_sha1(name, sha1) < 0)
Jeff King938a60d2012-12-12 11:18:02[diff] [blame]229 return 0;
Jeff King08610902012-12-12 11:04:04[diff] [blame]230
231 buf = read_sha1_file(sha1, &type, &size);
232 if (!buf)
Jeff King938a60d2012-12-12 11:18:02[diff] [blame]233 return error("unable to read mailmap object at %s", name);
Jeff King08610902012-12-12 11:04:04[diff] [blame]234 if (type != OBJ_BLOB)
Jeff King938a60d2012-12-12 11:18:02[diff] [blame]235 return error("mailmap is not a blob: %s", name);
Jeff King08610902012-12-12 11:04:04[diff] [blame]236
Jeff Kingf972a162013-08-28 01:41:39[diff] [blame]237 read_mailmap_string(map, buf, repo_abbrev);
Jeff King08610902012-12-12 11:04:04[diff] [blame]238
239 free(buf);
240 return 0;
241}
242
Marius Storm-Olsend551a482009-02-08 14:34:27[diff] [blame]243int read_mailmap(struct string_list *map, char **repo_abbrev)
244{
Jeff King938a60d2012-12-12 11:18:02[diff] [blame]245 int err = 0;
Jeff King8c473ce2012-12-13 13:04:47[diff] [blame]246
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]247 map->strdup_strings = 1;
Junio C Hamanode2f95e2013-09-12 15:37:08[diff] [blame]248 map->cmp = namemap_cmp;
Jeff King8c473ce2012-12-13 13:04:47[diff] [blame]249
250 if (!git_mailmap_blob && is_bare_repository())
251 git_mailmap_blob = "HEAD:.mailmap";
252
Jeff King938a60d2012-12-12 11:18:02[diff] [blame]253 err |= read_mailmap_file(map, ".mailmap", repo_abbrev);
254 err |= read_mailmap_blob(map, git_mailmap_blob, repo_abbrev);
255 err |= read_mailmap_file(map, git_mailmap_file, repo_abbrev);
256 return err;
Marius Storm-Olsend551a482009-02-08 14:34:27[diff] [blame]257}
258
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]259void clear_mailmap(struct string_list *map)
260{
261 debug_mm("mailmap: clearing %d entries...\n", map->nr);
262 map->strdup_strings = 1;
263 string_list_clear_func(map, free_mailmap_entry);
264 debug_mm("mailmap: cleared\n");
265}
266
Junio C Hamano388c7f82013-01-05 21:26:39[diff] [blame]267/*
268 * Look for an entry in map that match string[0:len]; string[len]
269 * does not have to be NUL (but it could be).
270 */
271static struct string_list_item *lookup_prefix(struct string_list *map,
272 const char *string, size_t len)
Junio C Hamano7c1c6782007-04-27 07:41:15[diff] [blame]273{
Junio C Hamano388c7f82013-01-05 21:26:39[diff] [blame]274 int i = string_list_find_insert_index(map, string, 1);
275 if (i < 0) {
276 /* exact match */
277 i = -1 - i;
278 if (!string[len])
279 return &map->items[i];
280 /*
281 * that map entry matches exactly to the string, including
282 * the cruft at the end beyond "len". That is not a match
283 * with string[0:len] that we are looking for.
284 */
285 } else if (!string[len]) {
286 /*
287 * asked with the whole string, and got nothing. No
288 * matching entry can exist in the map.
289 */
290 return NULL;
291 }
292
293 /*
294 * i is at the exact match to an overlong key, or location the
295 * overlong key would be inserted, which must come after the
296 * real location of the key if one exists.
297 */
298 while (0 <= --i && i < map->nr) {
299 int cmp = strncasecmp(map->items[i].string, string, len);
300 if (cmp < 0)
301 /*
302 * "i" points at a key definitely below the prefix;
303 * the map does not have string[0:len] in it.
304 */
305 break;
306 else if (!cmp && !map->items[i].string[len])
307 /* found it */
308 return &map->items[i];
309 /*
310 * otherwise, the string at "i" may be string[0:len]
311 * followed by a string that sorts later than string[len:];
312 * keep trying.
313 */
314 }
315 return NULL;
316}
317
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]318int map_user(struct string_list *map,
Junio C Hamanobd237942013-07-15 06:54:13[diff] [blame]319 const char **email, size_t *emaillen,
320 const char **name, size_t *namelen)
Junio C Hamano7c1c6782007-04-27 07:41:15[diff] [blame]321{
Johannes Schindelinc455c872008-07-21 18:03:49[diff] [blame]322 struct string_list_item *item;
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]323 struct mailmap_entry *me;
Junio C Hamano7c1c6782007-04-27 07:41:15[diff] [blame]324
Antoine Pelisseea02ffa2013-01-05 21:26:40[diff] [blame]325 debug_mm("map_user: map '%.*s' <%.*s>\n",
Junio C Hamanobd237942013-07-15 06:54:13[diff] [blame]326 (int)*namelen, debug_str(*name),
327 (int)*emaillen, debug_str(*email));
Junio C Hamano7c1c6782007-04-27 07:41:15[diff] [blame]328
Antoine Pelisseea02ffa2013-01-05 21:26:40[diff] [blame]329 item = lookup_prefix(map, *email, *emaillen);
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]330 if (item != NULL) {
331 me = (struct mailmap_entry *)item->util;
332 if (me->namemap.nr) {
Junio C Hamanobd237942013-07-15 06:54:13[diff] [blame]333 /*
334 * The item has multiple items, so we'll look up on
335 * name too. If the name is not found, we choose the
336 * simple entry.
337 */
Antoine Pelisseea02ffa2013-01-05 21:26:40[diff] [blame]338 struct string_list_item *subitem;
339 subitem = lookup_prefix(&me->namemap, *name, *namelen);
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]340 if (subitem)
341 item = subitem;
342 }
343 }
Junio C Hamano7c1c6782007-04-27 07:41:15[diff] [blame]344 if (item != NULL) {
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]345 struct mailmap_info *mi = (struct mailmap_info *)item->util;
Antoine Pelisseea02ffa2013-01-05 21:26:40[diff] [blame]346 if (mi->name == NULL && mi->email == NULL) {
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]347 debug_mm("map_user: -- (no simple mapping)\n");
348 return 0;
349 }
Antoine Pelisseea02ffa2013-01-05 21:26:40[diff] [blame]350 if (mi->email) {
351 *email = mi->email;
352 *emaillen = strlen(*email);
353 }
354 if (mi->name) {
355 *name = mi->name;
356 *namelen = strlen(*name);
357 }
Junio C Hamanobd237942013-07-15 06:54:13[diff] [blame]358 debug_mm("map_user: to '%.*s' <%.*s>\n",
359 (int)*namelen, debug_str(*name),
360 (int)*emaillen, debug_str(*email));
Junio C Hamano7c1c6782007-04-27 07:41:15[diff] [blame]361 return 1;
362 }
Marius Storm-Olsen0925ce42009-02-08 14:34:29[diff] [blame]363 debug_mm("map_user: --\n");
Junio C Hamano7c1c6782007-04-27 07:41:15[diff] [blame]364 return 0;
365}