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Commit | Line | Data |
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7c1c6782 | 1 | #include "cache.h" |
c455c87c | 2 | #include "string-list.h" |
fe5d30b6 | 3 | #include "mailmap.h" |
7c1c6782 | 4 | |
0925ce4d MSO |
5 | #define DEBUG_MAILMAP 0 |
6 | #if DEBUG_MAILMAP | |
7 | #define debug_mm(...) fprintf(stderr, __VA_ARGS__) | |
fbfba7ad | 8 | #define debug_str(X) ((X) ? (X) : "(none)") |
0925ce4d MSO |
9 | #else |
10 | static inline void debug_mm(const char *format, ...) {} | |
fbfba7ad | 11 | static inline const char *debug_str(const char *s) { return s; } |
0925ce4d MSO |
12 | #endif |
13 | ||
d551a488 | 14 | const char *git_mailmap_file; |
08610900 | 15 | const char *git_mailmap_blob; |
0925ce4d MSO |
16 | |
17 | struct mailmap_info { | |
18 | char *name; | |
19 | char *email; | |
20 | }; | |
21 | ||
22 | struct 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 | ||
31 | static void free_mailmap_info(void *p, const char *s) | |
32 | { | |
33 | struct mailmap_info *mi = (struct mailmap_info *)p; | |
bd237945 JH |
34 | debug_mm("mailmap: -- complex: '%s' -> '%s' <%s>\n", |
35 | s, debug_str(mi->name), debug_str(mi->email)); | |
0925ce4d MSO |
36 | free(mi->name); |
37 | free(mi->email); | |
38 | } | |
39 | ||
40 | static void free_mailmap_entry(void *p, const char *s) | |
41 | { | |
42 | struct mailmap_entry *me = (struct mailmap_entry *)p; | |
bd237945 JH |
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)); | |
fbfba7ad | 47 | |
0925ce4d MSO |
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 | ||
55 | static void add_mapping(struct string_list *map, | |
bd237945 JH |
56 | char *new_name, char *new_email, |
57 | char *old_name, char *old_email) | |
0925ce4d MSO |
58 | { |
59 | struct mailmap_entry *me; | |
60 | int index; | |
bf637803 | 61 | |
0925ce4d MSO |
62 | if (old_email == NULL) { |
63 | old_email = new_email; | |
64 | new_email = NULL; | |
65 | } | |
66 | ||
67 | if ((index = string_list_find_insert_index(map, old_email, 1)) < 0) { | |
68 | /* mailmap entry exists, invert index value */ | |
69 | index = -1 - index; | |
97e751be | 70 | me = (struct mailmap_entry *)map->items[index].util; |
0925ce4d MSO |
71 | } else { |
72 | /* create mailmap entry */ | |
97e751be JH |
73 | struct string_list_item *item; |
74 | ||
75 | item = string_list_insert_at_index(map, index, old_email); | |
76 | me = xcalloc(1, sizeof(struct mailmap_entry)); | |
77 | me->namemap.strdup_strings = 1; | |
78 | me->namemap.cmp = strcasecmp; | |
79 | item->util = me; | |
0925ce4d | 80 | } |
0925ce4d MSO |
81 | |
82 | if (old_name == NULL) { | |
bd237945 JH |
83 | debug_mm("mailmap: adding (simple) entry for %s at index %d\n", |
84 | old_email, index); | |
0925ce4d | 85 | /* Replace current name and new email for simple entry */ |
d8d2eb7d JM |
86 | if (new_name) { |
87 | free(me->name); | |
0925ce4d | 88 | me->name = xstrdup(new_name); |
d8d2eb7d JM |
89 | } |
90 | if (new_email) { | |
91 | free(me->email); | |
0925ce4d | 92 | me->email = xstrdup(new_email); |
d8d2eb7d | 93 | } |
0925ce4d | 94 | } else { |
74b531f6 | 95 | struct mailmap_info *mi = xcalloc(1, sizeof(struct mailmap_info)); |
bd237945 JH |
96 | debug_mm("mailmap: adding (complex) entry for %s at index %d\n", |
97 | old_email, index); | |
0925ce4d MSO |
98 | if (new_name) |
99 | mi->name = xstrdup(new_name); | |
100 | if (new_email) | |
101 | mi->email = xstrdup(new_email); | |
78a395d3 | 102 | string_list_insert(&me->namemap, old_name)->util = mi; |
0925ce4d MSO |
103 | } |
104 | ||
105 | debug_mm("mailmap: '%s' <%s> -> '%s' <%s>\n", | |
bd237945 JH |
106 | debug_str(old_name), old_email, |
107 | debug_str(new_name), debug_str(new_email)); | |
0925ce4d MSO |
108 | } |
109 | ||
5288dd58 | 110 | static char *parse_name_and_email(char *buffer, char **name, |
bd237945 | 111 | char **email, int allow_empty_email) |
0925ce4d MSO |
112 | { |
113 | char *left, *right, *nstart, *nend; | |
2af202be | 114 | *name = *email = NULL; |
0925ce4d MSO |
115 | |
116 | if ((left = strchr(buffer, '<')) == NULL) | |
117 | return NULL; | |
118 | if ((right = strchr(left+1, '>')) == NULL) | |
119 | return NULL; | |
5288dd58 | 120 | if (!allow_empty_email && (left+1 == right)) |
0925ce4d MSO |
121 | return NULL; |
122 | ||
123 | /* remove whitespace from beginning and end of name */ | |
124 | nstart = buffer; | |
125 | while (isspace(*nstart) && nstart < left) | |
126 | ++nstart; | |
127 | nend = left-1; | |
3174bc5c | 128 | while (nend > nstart && isspace(*nend)) |
0925ce4d MSO |
129 | --nend; |
130 | ||
8c381151 | 131 | *name = (nstart <= nend ? nstart : NULL); |
0925ce4d MSO |
132 | *email = left+1; |
133 | *(nend+1) = '\0'; | |
134 | *right++ = '\0'; | |
135 | ||
136 | return (*right == '\0' ? NULL : right); | |
137 | } | |
138 | ||
7c8ce308 JK |
139 | static void read_mailmap_line(struct string_list *map, char *buffer, |
140 | char **repo_abbrev) | |
141 | { | |
142 | char *name1 = NULL, *email1 = NULL, *name2 = NULL, *email2 = NULL; | |
143 | if (buffer[0] == '#') { | |
144 | static const char abbrev[] = "# repo-abbrev:"; | |
145 | int abblen = sizeof(abbrev) - 1; | |
146 | int len = strlen(buffer); | |
147 | ||
148 | if (!repo_abbrev) | |
149 | return; | |
150 | ||
151 | if (len && buffer[len - 1] == '\n') | |
152 | buffer[--len] = 0; | |
153 | if (!strncmp(buffer, abbrev, abblen)) { | |
154 | char *cp; | |
155 | ||
156 | if (repo_abbrev) | |
157 | free(*repo_abbrev); | |
158 | *repo_abbrev = xmalloc(len); | |
159 | ||
160 | for (cp = buffer + abblen; isspace(*cp); cp++) | |
161 | ; /* nothing */ | |
162 | strcpy(*repo_abbrev, cp); | |
163 | } | |
164 | return; | |
165 | } | |
166 | if ((name2 = parse_name_and_email(buffer, &name1, &email1, 0)) != NULL) | |
167 | parse_name_and_email(name2, &name2, &email2, 1); | |
168 | ||
169 | if (email1) | |
170 | add_mapping(map, name1, email1, name2, email2); | |
171 | } | |
172 | ||
173 | static int read_mailmap_file(struct string_list *map, const char *filename, | |
174 | char **repo_abbrev) | |
7c1c6782 JH |
175 | { |
176 | char buffer[1024]; | |
938a60d6 JK |
177 | FILE *f; |
178 | ||
179 | if (!filename) | |
180 | return 0; | |
181 | ||
182 | f = fopen(filename, "r"); | |
183 | if (!f) { | |
184 | if (errno == ENOENT) | |
185 | return 0; | |
186 | return error("unable to open mailmap at %s: %s", | |
187 | filename, strerror(errno)); | |
188 | } | |
7c1c6782 | 189 | |
7c8ce308 JK |
190 | while (fgets(buffer, sizeof(buffer), f) != NULL) |
191 | read_mailmap_line(map, buffer, repo_abbrev); | |
7c1c6782 JH |
192 | fclose(f); |
193 | return 0; | |
194 | } | |
195 | ||
08610900 JK |
196 | static void read_mailmap_buf(struct string_list *map, |
197 | const char *buf, unsigned long len, | |
198 | char **repo_abbrev) | |
199 | { | |
200 | while (len) { | |
201 | const char *end = strchrnul(buf, '\n'); | |
202 | unsigned long linelen = end - buf + 1; | |
203 | char *line = xmemdupz(buf, linelen); | |
204 | ||
205 | read_mailmap_line(map, line, repo_abbrev); | |
206 | ||
207 | free(line); | |
208 | buf += linelen; | |
209 | len -= linelen; | |
210 | } | |
211 | } | |
212 | ||
213 | static int read_mailmap_blob(struct string_list *map, | |
214 | const char *name, | |
215 | char **repo_abbrev) | |
216 | { | |
217 | unsigned char sha1[20]; | |
218 | char *buf; | |
219 | unsigned long size; | |
220 | enum object_type type; | |
221 | ||
222 | if (!name) | |
938a60d6 | 223 | return 0; |
08610900 | 224 | if (get_sha1(name, sha1) < 0) |
938a60d6 | 225 | return 0; |
08610900 JK |
226 | |
227 | buf = read_sha1_file(sha1, &type, &size); | |
228 | if (!buf) | |
938a60d6 | 229 | return error("unable to read mailmap object at %s", name); |
08610900 | 230 | if (type != OBJ_BLOB) |
938a60d6 | 231 | return error("mailmap is not a blob: %s", name); |
08610900 JK |
232 | |
233 | read_mailmap_buf(map, buf, size, repo_abbrev); | |
234 | ||
235 | free(buf); | |
236 | return 0; | |
237 | } | |
238 | ||
d551a488 MSO |
239 | int read_mailmap(struct string_list *map, char **repo_abbrev) |
240 | { | |
938a60d6 | 241 | int err = 0; |
8c473cec | 242 | |
0925ce4d | 243 | map->strdup_strings = 1; |
388c7f8a | 244 | map->cmp = strcasecmp; |
8c473cec JK |
245 | |
246 | if (!git_mailmap_blob && is_bare_repository()) | |
247 | git_mailmap_blob = "HEAD:.mailmap"; | |
248 | ||
938a60d6 JK |
249 | err |= read_mailmap_file(map, ".mailmap", repo_abbrev); |
250 | err |= read_mailmap_blob(map, git_mailmap_blob, repo_abbrev); | |
251 | err |= read_mailmap_file(map, git_mailmap_file, repo_abbrev); | |
252 | return err; | |
d551a488 MSO |
253 | } |
254 | ||
0925ce4d MSO |
255 | void clear_mailmap(struct string_list *map) |
256 | { | |
257 | debug_mm("mailmap: clearing %d entries...\n", map->nr); | |
258 | map->strdup_strings = 1; | |
259 | string_list_clear_func(map, free_mailmap_entry); | |
260 | debug_mm("mailmap: cleared\n"); | |
261 | } | |
262 | ||
388c7f8a JH |
263 | /* |
264 | * Look for an entry in map that match string[0:len]; string[len] | |
265 | * does not have to be NUL (but it could be). | |
266 | */ | |
267 | static struct string_list_item *lookup_prefix(struct string_list *map, | |
268 | const char *string, size_t len) | |
269 | { | |
270 | int i = string_list_find_insert_index(map, string, 1); | |
271 | if (i < 0) { | |
272 | /* exact match */ | |
273 | i = -1 - i; | |
274 | if (!string[len]) | |
275 | return &map->items[i]; | |
276 | /* | |
277 | * that map entry matches exactly to the string, including | |
278 | * the cruft at the end beyond "len". That is not a match | |
279 | * with string[0:len] that we are looking for. | |
280 | */ | |
281 | } else if (!string[len]) { | |
282 | /* | |
283 | * asked with the whole string, and got nothing. No | |
284 | * matching entry can exist in the map. | |
285 | */ | |
286 | return NULL; | |
287 | } | |
288 | ||
289 | /* | |
290 | * i is at the exact match to an overlong key, or location the | |
291 | * overlong key would be inserted, which must come after the | |
292 | * real location of the key if one exists. | |
293 | */ | |
294 | while (0 <= --i && i < map->nr) { | |
295 | int cmp = strncasecmp(map->items[i].string, string, len); | |
296 | if (cmp < 0) | |
297 | /* | |
298 | * "i" points at a key definitely below the prefix; | |
299 | * the map does not have string[0:len] in it. | |
300 | */ | |
301 | break; | |
302 | else if (!cmp && !map->items[i].string[len]) | |
303 | /* found it */ | |
304 | return &map->items[i]; | |
305 | /* | |
306 | * otherwise, the string at "i" may be string[0:len] | |
307 | * followed by a string that sorts later than string[len:]; | |
308 | * keep trying. | |
309 | */ | |
310 | } | |
311 | return NULL; | |
312 | } | |
313 | ||
0925ce4d | 314 | int map_user(struct string_list *map, |
bd237945 JH |
315 | const char **email, size_t *emaillen, |
316 | const char **name, size_t *namelen) | |
7c1c6782 | 317 | { |
c455c87c | 318 | struct string_list_item *item; |
0925ce4d | 319 | struct mailmap_entry *me; |
388c7f8a | 320 | |
ea02ffa3 | 321 | debug_mm("map_user: map '%.*s' <%.*s>\n", |
bd237945 JH |
322 | (int)*namelen, debug_str(*name), |
323 | (int)*emaillen, debug_str(*email)); | |
388c7f8a | 324 | |
ea02ffa3 | 325 | item = lookup_prefix(map, *email, *emaillen); |
0925ce4d MSO |
326 | if (item != NULL) { |
327 | me = (struct mailmap_entry *)item->util; | |
328 | if (me->namemap.nr) { | |
bd237945 JH |
329 | /* |
330 | * The item has multiple items, so we'll look up on | |
331 | * name too. If the name is not found, we choose the | |
332 | * simple entry. | |
333 | */ | |
ea02ffa3 AP |
334 | struct string_list_item *subitem; |
335 | subitem = lookup_prefix(&me->namemap, *name, *namelen); | |
0925ce4d MSO |
336 | if (subitem) |
337 | item = subitem; | |
338 | } | |
339 | } | |
7c1c6782 | 340 | if (item != NULL) { |
0925ce4d | 341 | struct mailmap_info *mi = (struct mailmap_info *)item->util; |
ea02ffa3 | 342 | if (mi->name == NULL && mi->email == NULL) { |
0925ce4d MSO |
343 | debug_mm("map_user: -- (no simple mapping)\n"); |
344 | return 0; | |
345 | } | |
ea02ffa3 AP |
346 | if (mi->email) { |
347 | *email = mi->email; | |
348 | *emaillen = strlen(*email); | |
349 | } | |
350 | if (mi->name) { | |
351 | *name = mi->name; | |
352 | *namelen = strlen(*name); | |
353 | } | |
bd237945 JH |
354 | debug_mm("map_user: to '%.*s' <%.*s>\n", |
355 | (int)*namelen, debug_str(*name), | |
356 | (int)*emaillen, debug_str(*email)); | |
7c1c6782 JH |
357 | return 1; |
358 | } | |
0925ce4d | 359 | debug_mm("map_user: --\n"); |
7c1c6782 JH |
360 | return 0; |
361 | } |