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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 | ||
de2f95eb JH |
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 | */ | |
64 | static int namemap_cmp(const char *a, const char *b) | |
65 | { | |
66 | return strcasecmp(a, b); | |
67 | } | |
68 | ||
0925ce4d | 69 | static void add_mapping(struct string_list *map, |
bd237945 JH |
70 | char *new_name, char *new_email, |
71 | char *old_name, char *old_email) | |
0925ce4d MSO |
72 | { |
73 | struct mailmap_entry *me; | |
63226218 | 74 | struct string_list_item *item; |
bf637803 | 75 | |
0925ce4d MSO |
76 | if (old_email == NULL) { |
77 | old_email = new_email; | |
78 | new_email = NULL; | |
79 | } | |
80 | ||
63226218 SB |
81 | item = string_list_insert(map, old_email); |
82 | if (item->util) { | |
83 | me = (struct mailmap_entry *)item->util; | |
0925ce4d | 84 | } else { |
97e751be JH |
85 | me = xcalloc(1, sizeof(struct mailmap_entry)); |
86 | me->namemap.strdup_strings = 1; | |
de2f95eb | 87 | me->namemap.cmp = namemap_cmp; |
97e751be | 88 | item->util = me; |
0925ce4d | 89 | } |
0925ce4d MSO |
90 | |
91 | if (old_name == NULL) { | |
63226218 SB |
92 | debug_mm("mailmap: adding (simple) entry for '%s'\n", old_email); |
93 | ||
0925ce4d | 94 | /* Replace current name and new email for simple entry */ |
d8d2eb7d JM |
95 | if (new_name) { |
96 | free(me->name); | |
0925ce4d | 97 | me->name = xstrdup(new_name); |
d8d2eb7d JM |
98 | } |
99 | if (new_email) { | |
100 | free(me->email); | |
0925ce4d | 101 | me->email = xstrdup(new_email); |
d8d2eb7d | 102 | } |
0925ce4d | 103 | } else { |
74b531f6 | 104 | struct mailmap_info *mi = xcalloc(1, sizeof(struct mailmap_info)); |
63226218 | 105 | debug_mm("mailmap: adding (complex) entry for '%s'\n", old_email); |
0925ce4d MSO |
106 | if (new_name) |
107 | mi->name = xstrdup(new_name); | |
108 | if (new_email) | |
109 | mi->email = xstrdup(new_email); | |
78a395d3 | 110 | string_list_insert(&me->namemap, old_name)->util = mi; |
0925ce4d MSO |
111 | } |
112 | ||
113 | debug_mm("mailmap: '%s' <%s> -> '%s' <%s>\n", | |
bd237945 JH |
114 | debug_str(old_name), old_email, |
115 | debug_str(new_name), debug_str(new_email)); | |
0925ce4d MSO |
116 | } |
117 | ||
5288dd58 | 118 | static char *parse_name_and_email(char *buffer, char **name, |
bd237945 | 119 | char **email, int allow_empty_email) |
0925ce4d MSO |
120 | { |
121 | char *left, *right, *nstart, *nend; | |
2af202be | 122 | *name = *email = NULL; |
0925ce4d MSO |
123 | |
124 | if ((left = strchr(buffer, '<')) == NULL) | |
125 | return NULL; | |
126 | if ((right = strchr(left+1, '>')) == NULL) | |
127 | return NULL; | |
5288dd58 | 128 | if (!allow_empty_email && (left+1 == right)) |
0925ce4d MSO |
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; | |
3174bc5c | 136 | while (nend > nstart && isspace(*nend)) |
0925ce4d MSO |
137 | --nend; |
138 | ||
8c381151 | 139 | *name = (nstart <= nend ? nstart : NULL); |
0925ce4d MSO |
140 | *email = left+1; |
141 | *(nend+1) = '\0'; | |
142 | *right++ = '\0'; | |
143 | ||
144 | return (*right == '\0' ? NULL : right); | |
145 | } | |
146 | ||
7c8ce308 JK |
147 | static 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 | ||
c9ba31f5 | 164 | free(*repo_abbrev); |
7c8ce308 JK |
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 | ||
180 | static int read_mailmap_file(struct string_list *map, const char *filename, | |
181 | char **repo_abbrev) | |
7c1c6782 JH |
182 | { |
183 | char buffer[1024]; | |
938a60d6 JK |
184 | FILE *f; |
185 | ||
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 | } | |
7c1c6782 | 196 | |
7c8ce308 JK |
197 | while (fgets(buffer, sizeof(buffer), f) != NULL) |
198 | read_mailmap_line(map, buffer, repo_abbrev); | |
7c1c6782 JH |
199 | fclose(f); |
200 | return 0; | |
201 | } | |
202 | ||
f972a165 JK |
203 | static void read_mailmap_string(struct string_list *map, char *buf, |
204 | char **repo_abbrev) | |
08610900 | 205 | { |
f972a165 JK |
206 | while (*buf) { |
207 | char *end = strchrnul(buf, '\n'); | |
08610900 | 208 | |
f972a165 JK |
209 | if (*end) |
210 | *end++ = '\0'; | |
08610900 | 211 | |
f972a165 JK |
212 | read_mailmap_line(map, buf, repo_abbrev); |
213 | buf = end; | |
08610900 JK |
214 | } |
215 | } | |
216 | ||
217 | static 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) | |
938a60d6 | 227 | return 0; |
08610900 | 228 | if (get_sha1(name, sha1) < 0) |
938a60d6 | 229 | return 0; |
08610900 JK |
230 | |
231 | buf = read_sha1_file(sha1, &type, &size); | |
232 | if (!buf) | |
938a60d6 | 233 | return error("unable to read mailmap object at %s", name); |
08610900 | 234 | if (type != OBJ_BLOB) |
938a60d6 | 235 | return error("mailmap is not a blob: %s", name); |
08610900 | 236 | |
f972a165 | 237 | read_mailmap_string(map, buf, repo_abbrev); |
08610900 JK |
238 | |
239 | free(buf); | |
240 | return 0; | |
241 | } | |
242 | ||
d551a488 MSO |
243 | int read_mailmap(struct string_list *map, char **repo_abbrev) |
244 | { | |
938a60d6 | 245 | int err = 0; |
8c473cec | 246 | |
0925ce4d | 247 | map->strdup_strings = 1; |
de2f95eb | 248 | map->cmp = namemap_cmp; |
8c473cec JK |
249 | |
250 | if (!git_mailmap_blob && is_bare_repository()) | |
251 | git_mailmap_blob = "HEAD:.mailmap"; | |
252 | ||
938a60d6 JK |
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; | |
d551a488 MSO |
257 | } |
258 | ||
0925ce4d MSO |
259 | void 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 | ||
388c7f8a JH |
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 | */ | |
271 | static struct string_list_item *lookup_prefix(struct string_list *map, | |
272 | const char *string, size_t len) | |
273 | { | |
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 | ||
0925ce4d | 318 | int map_user(struct string_list *map, |
bd237945 JH |
319 | const char **email, size_t *emaillen, |
320 | const char **name, size_t *namelen) | |
7c1c6782 | 321 | { |
c455c87c | 322 | struct string_list_item *item; |
0925ce4d | 323 | struct mailmap_entry *me; |
388c7f8a | 324 | |
ea02ffa3 | 325 | debug_mm("map_user: map '%.*s' <%.*s>\n", |
bd237945 JH |
326 | (int)*namelen, debug_str(*name), |
327 | (int)*emaillen, debug_str(*email)); | |
388c7f8a | 328 | |
ea02ffa3 | 329 | item = lookup_prefix(map, *email, *emaillen); |
0925ce4d MSO |
330 | if (item != NULL) { |
331 | me = (struct mailmap_entry *)item->util; | |
332 | if (me->namemap.nr) { | |
bd237945 JH |
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 | */ | |
ea02ffa3 AP |
338 | struct string_list_item *subitem; |
339 | subitem = lookup_prefix(&me->namemap, *name, *namelen); | |
0925ce4d MSO |
340 | if (subitem) |
341 | item = subitem; | |
342 | } | |
343 | } | |
7c1c6782 | 344 | if (item != NULL) { |
0925ce4d | 345 | struct mailmap_info *mi = (struct mailmap_info *)item->util; |
ea02ffa3 | 346 | if (mi->name == NULL && mi->email == NULL) { |
0925ce4d MSO |
347 | debug_mm("map_user: -- (no simple mapping)\n"); |
348 | return 0; | |
349 | } | |
ea02ffa3 AP |
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 | } | |
bd237945 JH |
358 | debug_mm("map_user: to '%.*s' <%.*s>\n", |
359 | (int)*namelen, debug_str(*name), | |
360 | (int)*emaillen, debug_str(*email)); | |
7c1c6782 JH |
361 | return 1; |
362 | } | |
0925ce4d | 363 | debug_mm("map_user: --\n"); |
7c1c6782 JH |
364 | return 0; |
365 | } |