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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__) | |
8 | #else | |
9 | static inline void debug_mm(const char *format, ...) {} | |
10 | #endif | |
11 | ||
d551a488 | 12 | const char *git_mailmap_file; |
08610900 | 13 | const char *git_mailmap_blob; |
0925ce4d MSO |
14 | |
15 | struct mailmap_info { | |
16 | char *name; | |
17 | char *email; | |
18 | }; | |
19 | ||
20 | struct mailmap_entry { | |
21 | /* name and email for the simple mail-only case */ | |
22 | char *name; | |
23 | char *email; | |
24 | ||
25 | /* name and email for the complex mail and name matching case */ | |
26 | struct string_list namemap; | |
27 | }; | |
28 | ||
29 | static void free_mailmap_info(void *p, const char *s) | |
30 | { | |
31 | struct mailmap_info *mi = (struct mailmap_info *)p; | |
32 | debug_mm("mailmap: -- complex: '%s' -> '%s' <%s>\n", s, mi->name, mi->email); | |
33 | free(mi->name); | |
34 | free(mi->email); | |
35 | } | |
36 | ||
37 | static void free_mailmap_entry(void *p, const char *s) | |
38 | { | |
39 | struct mailmap_entry *me = (struct mailmap_entry *)p; | |
40 | debug_mm("mailmap: removing entries for <%s>, with %d sub-entries\n", s, me->namemap.nr); | |
41 | debug_mm("mailmap: - simple: '%s' <%s>\n", me->name, me->email); | |
42 | free(me->name); | |
43 | free(me->email); | |
44 | ||
45 | me->namemap.strdup_strings = 1; | |
46 | string_list_clear_func(&me->namemap, free_mailmap_info); | |
47 | } | |
48 | ||
49 | static void add_mapping(struct string_list *map, | |
50 | char *new_name, char *new_email, char *old_name, char *old_email) | |
51 | { | |
52 | struct mailmap_entry *me; | |
53 | int index; | |
bf637803 | 54 | |
0925ce4d MSO |
55 | if (old_email == NULL) { |
56 | old_email = new_email; | |
57 | new_email = NULL; | |
58 | } | |
59 | ||
60 | if ((index = string_list_find_insert_index(map, old_email, 1)) < 0) { | |
61 | /* mailmap entry exists, invert index value */ | |
62 | index = -1 - index; | |
97e751be | 63 | me = (struct mailmap_entry *)map->items[index].util; |
0925ce4d MSO |
64 | } else { |
65 | /* create mailmap entry */ | |
97e751be JH |
66 | struct string_list_item *item; |
67 | ||
68 | item = string_list_insert_at_index(map, index, old_email); | |
69 | me = xcalloc(1, sizeof(struct mailmap_entry)); | |
70 | me->namemap.strdup_strings = 1; | |
71 | me->namemap.cmp = strcasecmp; | |
72 | item->util = me; | |
0925ce4d | 73 | } |
0925ce4d MSO |
74 | |
75 | if (old_name == NULL) { | |
76 | debug_mm("mailmap: adding (simple) entry for %s at index %d\n", old_email, index); | |
77 | /* Replace current name and new email for simple entry */ | |
d8d2eb7d JM |
78 | if (new_name) { |
79 | free(me->name); | |
0925ce4d | 80 | me->name = xstrdup(new_name); |
d8d2eb7d JM |
81 | } |
82 | if (new_email) { | |
83 | free(me->email); | |
0925ce4d | 84 | me->email = xstrdup(new_email); |
d8d2eb7d | 85 | } |
0925ce4d | 86 | } else { |
74b531f6 | 87 | struct mailmap_info *mi = xcalloc(1, sizeof(struct mailmap_info)); |
0925ce4d MSO |
88 | debug_mm("mailmap: adding (complex) entry for %s at index %d\n", old_email, index); |
89 | if (new_name) | |
90 | mi->name = xstrdup(new_name); | |
91 | if (new_email) | |
92 | mi->email = xstrdup(new_email); | |
78a395d3 | 93 | string_list_insert(&me->namemap, old_name)->util = mi; |
0925ce4d MSO |
94 | } |
95 | ||
96 | debug_mm("mailmap: '%s' <%s> -> '%s' <%s>\n", | |
97 | old_name, old_email, new_name, new_email); | |
98 | } | |
99 | ||
5288dd58 BS |
100 | static char *parse_name_and_email(char *buffer, char **name, |
101 | char **email, int allow_empty_email) | |
0925ce4d MSO |
102 | { |
103 | char *left, *right, *nstart, *nend; | |
2af202be | 104 | *name = *email = NULL; |
0925ce4d MSO |
105 | |
106 | if ((left = strchr(buffer, '<')) == NULL) | |
107 | return NULL; | |
108 | if ((right = strchr(left+1, '>')) == NULL) | |
109 | return NULL; | |
5288dd58 | 110 | if (!allow_empty_email && (left+1 == right)) |
0925ce4d MSO |
111 | return NULL; |
112 | ||
113 | /* remove whitespace from beginning and end of name */ | |
114 | nstart = buffer; | |
115 | while (isspace(*nstart) && nstart < left) | |
116 | ++nstart; | |
117 | nend = left-1; | |
3174bc5c | 118 | while (nend > nstart && isspace(*nend)) |
0925ce4d MSO |
119 | --nend; |
120 | ||
8c381151 | 121 | *name = (nstart <= nend ? nstart : NULL); |
0925ce4d MSO |
122 | *email = left+1; |
123 | *(nend+1) = '\0'; | |
124 | *right++ = '\0'; | |
125 | ||
126 | return (*right == '\0' ? NULL : right); | |
127 | } | |
128 | ||
7c8ce308 JK |
129 | static void read_mailmap_line(struct string_list *map, char *buffer, |
130 | char **repo_abbrev) | |
131 | { | |
132 | char *name1 = NULL, *email1 = NULL, *name2 = NULL, *email2 = NULL; | |
133 | if (buffer[0] == '#') { | |
134 | static const char abbrev[] = "# repo-abbrev:"; | |
135 | int abblen = sizeof(abbrev) - 1; | |
136 | int len = strlen(buffer); | |
137 | ||
138 | if (!repo_abbrev) | |
139 | return; | |
140 | ||
141 | if (len && buffer[len - 1] == '\n') | |
142 | buffer[--len] = 0; | |
143 | if (!strncmp(buffer, abbrev, abblen)) { | |
144 | char *cp; | |
145 | ||
146 | if (repo_abbrev) | |
147 | free(*repo_abbrev); | |
148 | *repo_abbrev = xmalloc(len); | |
149 | ||
150 | for (cp = buffer + abblen; isspace(*cp); cp++) | |
151 | ; /* nothing */ | |
152 | strcpy(*repo_abbrev, cp); | |
153 | } | |
154 | return; | |
155 | } | |
156 | if ((name2 = parse_name_and_email(buffer, &name1, &email1, 0)) != NULL) | |
157 | parse_name_and_email(name2, &name2, &email2, 1); | |
158 | ||
159 | if (email1) | |
160 | add_mapping(map, name1, email1, name2, email2); | |
161 | } | |
162 | ||
163 | static int read_mailmap_file(struct string_list *map, const char *filename, | |
164 | char **repo_abbrev) | |
7c1c6782 JH |
165 | { |
166 | char buffer[1024]; | |
938a60d6 JK |
167 | FILE *f; |
168 | ||
169 | if (!filename) | |
170 | return 0; | |
171 | ||
172 | f = fopen(filename, "r"); | |
173 | if (!f) { | |
174 | if (errno == ENOENT) | |
175 | return 0; | |
176 | return error("unable to open mailmap at %s: %s", | |
177 | filename, strerror(errno)); | |
178 | } | |
7c1c6782 | 179 | |
7c8ce308 JK |
180 | while (fgets(buffer, sizeof(buffer), f) != NULL) |
181 | read_mailmap_line(map, buffer, repo_abbrev); | |
7c1c6782 JH |
182 | fclose(f); |
183 | return 0; | |
184 | } | |
185 | ||
08610900 JK |
186 | static void read_mailmap_buf(struct string_list *map, |
187 | const char *buf, unsigned long len, | |
188 | char **repo_abbrev) | |
189 | { | |
190 | while (len) { | |
191 | const char *end = strchrnul(buf, '\n'); | |
192 | unsigned long linelen = end - buf + 1; | |
193 | char *line = xmemdupz(buf, linelen); | |
194 | ||
195 | read_mailmap_line(map, line, repo_abbrev); | |
196 | ||
197 | free(line); | |
198 | buf += linelen; | |
199 | len -= linelen; | |
200 | } | |
201 | } | |
202 | ||
203 | static int read_mailmap_blob(struct string_list *map, | |
204 | const char *name, | |
205 | char **repo_abbrev) | |
206 | { | |
207 | unsigned char sha1[20]; | |
208 | char *buf; | |
209 | unsigned long size; | |
210 | enum object_type type; | |
211 | ||
212 | if (!name) | |
938a60d6 | 213 | return 0; |
08610900 | 214 | if (get_sha1(name, sha1) < 0) |
938a60d6 | 215 | return 0; |
08610900 JK |
216 | |
217 | buf = read_sha1_file(sha1, &type, &size); | |
218 | if (!buf) | |
938a60d6 | 219 | return error("unable to read mailmap object at %s", name); |
08610900 | 220 | if (type != OBJ_BLOB) |
938a60d6 | 221 | return error("mailmap is not a blob: %s", name); |
08610900 JK |
222 | |
223 | read_mailmap_buf(map, buf, size, repo_abbrev); | |
224 | ||
225 | free(buf); | |
226 | return 0; | |
227 | } | |
228 | ||
d551a488 MSO |
229 | int read_mailmap(struct string_list *map, char **repo_abbrev) |
230 | { | |
938a60d6 | 231 | int err = 0; |
8c473cec | 232 | |
0925ce4d | 233 | map->strdup_strings = 1; |
388c7f8a | 234 | map->cmp = strcasecmp; |
8c473cec JK |
235 | |
236 | if (!git_mailmap_blob && is_bare_repository()) | |
237 | git_mailmap_blob = "HEAD:.mailmap"; | |
238 | ||
938a60d6 JK |
239 | err |= read_mailmap_file(map, ".mailmap", repo_abbrev); |
240 | err |= read_mailmap_blob(map, git_mailmap_blob, repo_abbrev); | |
241 | err |= read_mailmap_file(map, git_mailmap_file, repo_abbrev); | |
242 | return err; | |
d551a488 MSO |
243 | } |
244 | ||
0925ce4d MSO |
245 | void clear_mailmap(struct string_list *map) |
246 | { | |
247 | debug_mm("mailmap: clearing %d entries...\n", map->nr); | |
248 | map->strdup_strings = 1; | |
249 | string_list_clear_func(map, free_mailmap_entry); | |
250 | debug_mm("mailmap: cleared\n"); | |
251 | } | |
252 | ||
388c7f8a JH |
253 | /* |
254 | * Look for an entry in map that match string[0:len]; string[len] | |
255 | * does not have to be NUL (but it could be). | |
256 | */ | |
257 | static struct string_list_item *lookup_prefix(struct string_list *map, | |
258 | const char *string, size_t len) | |
259 | { | |
260 | int i = string_list_find_insert_index(map, string, 1); | |
261 | if (i < 0) { | |
262 | /* exact match */ | |
263 | i = -1 - i; | |
264 | if (!string[len]) | |
265 | return &map->items[i]; | |
266 | /* | |
267 | * that map entry matches exactly to the string, including | |
268 | * the cruft at the end beyond "len". That is not a match | |
269 | * with string[0:len] that we are looking for. | |
270 | */ | |
271 | } else if (!string[len]) { | |
272 | /* | |
273 | * asked with the whole string, and got nothing. No | |
274 | * matching entry can exist in the map. | |
275 | */ | |
276 | return NULL; | |
277 | } | |
278 | ||
279 | /* | |
280 | * i is at the exact match to an overlong key, or location the | |
281 | * overlong key would be inserted, which must come after the | |
282 | * real location of the key if one exists. | |
283 | */ | |
284 | while (0 <= --i && i < map->nr) { | |
285 | int cmp = strncasecmp(map->items[i].string, string, len); | |
286 | if (cmp < 0) | |
287 | /* | |
288 | * "i" points at a key definitely below the prefix; | |
289 | * the map does not have string[0:len] in it. | |
290 | */ | |
291 | break; | |
292 | else if (!cmp && !map->items[i].string[len]) | |
293 | /* found it */ | |
294 | return &map->items[i]; | |
295 | /* | |
296 | * otherwise, the string at "i" may be string[0:len] | |
297 | * followed by a string that sorts later than string[len:]; | |
298 | * keep trying. | |
299 | */ | |
300 | } | |
301 | return NULL; | |
302 | } | |
303 | ||
0925ce4d | 304 | int map_user(struct string_list *map, |
ea02ffa3 AP |
305 | const char **email, size_t *emaillen, |
306 | const char **name, size_t *namelen) | |
7c1c6782 | 307 | { |
c455c87c | 308 | struct string_list_item *item; |
0925ce4d | 309 | struct mailmap_entry *me; |
388c7f8a | 310 | |
ea02ffa3 | 311 | debug_mm("map_user: map '%.*s' <%.*s>\n", |
a8002a5f | 312 | (int)*namelen, *name, (int)*emaillen, *email); |
388c7f8a | 313 | |
ea02ffa3 | 314 | item = lookup_prefix(map, *email, *emaillen); |
0925ce4d MSO |
315 | if (item != NULL) { |
316 | me = (struct mailmap_entry *)item->util; | |
317 | if (me->namemap.nr) { | |
318 | /* The item has multiple items, so we'll look up on name too */ | |
319 | /* If the name is not found, we choose the simple entry */ | |
ea02ffa3 AP |
320 | struct string_list_item *subitem; |
321 | subitem = lookup_prefix(&me->namemap, *name, *namelen); | |
0925ce4d MSO |
322 | if (subitem) |
323 | item = subitem; | |
324 | } | |
325 | } | |
7c1c6782 | 326 | if (item != NULL) { |
0925ce4d | 327 | struct mailmap_info *mi = (struct mailmap_info *)item->util; |
ea02ffa3 | 328 | if (mi->name == NULL && mi->email == NULL) { |
0925ce4d MSO |
329 | debug_mm("map_user: -- (no simple mapping)\n"); |
330 | return 0; | |
331 | } | |
ea02ffa3 AP |
332 | if (mi->email) { |
333 | *email = mi->email; | |
334 | *emaillen = strlen(*email); | |
335 | } | |
336 | if (mi->name) { | |
337 | *name = mi->name; | |
338 | *namelen = strlen(*name); | |
339 | } | |
a8002a5f ES |
340 | debug_mm("map_user: to '%.*s' <%.*s>\n", (int)*namelen, *name, |
341 | (int)*emaillen, *email); | |
7c1c6782 JH |
342 | return 1; |
343 | } | |
0925ce4d | 344 | debug_mm("map_user: --\n"); |
7c1c6782 JH |
345 | return 0; |
346 | } |