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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 JS |
54 | char *p; |
55 | ||
56 | if (old_email) | |
57 | for (p = old_email; *p; p++) | |
58 | *p = tolower(*p); | |
59 | if (new_email) | |
60 | for (p = new_email; *p; p++) | |
61 | *p = tolower(*p); | |
62 | ||
0925ce4d MSO |
63 | if (old_email == NULL) { |
64 | old_email = new_email; | |
65 | new_email = NULL; | |
66 | } | |
67 | ||
68 | if ((index = string_list_find_insert_index(map, old_email, 1)) < 0) { | |
69 | /* mailmap entry exists, invert index value */ | |
70 | index = -1 - index; | |
71 | } else { | |
72 | /* create mailmap entry */ | |
aadceea6 | 73 | struct string_list_item *item = string_list_insert_at_index(map, index, old_email); |
74b531f6 | 74 | item->util = xcalloc(1, sizeof(struct mailmap_entry)); |
0925ce4d MSO |
75 | ((struct mailmap_entry *)item->util)->namemap.strdup_strings = 1; |
76 | } | |
77 | me = (struct mailmap_entry *)map->items[index].util; | |
78 | ||
79 | if (old_name == NULL) { | |
80 | debug_mm("mailmap: adding (simple) entry for %s at index %d\n", old_email, index); | |
81 | /* Replace current name and new email for simple entry */ | |
d8d2eb7d JM |
82 | if (new_name) { |
83 | free(me->name); | |
0925ce4d | 84 | me->name = xstrdup(new_name); |
d8d2eb7d JM |
85 | } |
86 | if (new_email) { | |
87 | free(me->email); | |
0925ce4d | 88 | me->email = xstrdup(new_email); |
d8d2eb7d | 89 | } |
0925ce4d | 90 | } else { |
74b531f6 | 91 | struct mailmap_info *mi = xcalloc(1, sizeof(struct mailmap_info)); |
0925ce4d MSO |
92 | debug_mm("mailmap: adding (complex) entry for %s at index %d\n", old_email, index); |
93 | if (new_name) | |
94 | mi->name = xstrdup(new_name); | |
95 | if (new_email) | |
96 | mi->email = xstrdup(new_email); | |
78a395d3 | 97 | string_list_insert(&me->namemap, old_name)->util = mi; |
0925ce4d MSO |
98 | } |
99 | ||
100 | debug_mm("mailmap: '%s' <%s> -> '%s' <%s>\n", | |
101 | old_name, old_email, new_name, new_email); | |
102 | } | |
103 | ||
5288dd58 BS |
104 | static char *parse_name_and_email(char *buffer, char **name, |
105 | char **email, int allow_empty_email) | |
0925ce4d MSO |
106 | { |
107 | char *left, *right, *nstart, *nend; | |
2af202be | 108 | *name = *email = NULL; |
0925ce4d MSO |
109 | |
110 | if ((left = strchr(buffer, '<')) == NULL) | |
111 | return NULL; | |
112 | if ((right = strchr(left+1, '>')) == NULL) | |
113 | return NULL; | |
5288dd58 | 114 | if (!allow_empty_email && (left+1 == right)) |
0925ce4d MSO |
115 | return NULL; |
116 | ||
117 | /* remove whitespace from beginning and end of name */ | |
118 | nstart = buffer; | |
119 | while (isspace(*nstart) && nstart < left) | |
120 | ++nstart; | |
121 | nend = left-1; | |
3174bc5c | 122 | while (nend > nstart && isspace(*nend)) |
0925ce4d MSO |
123 | --nend; |
124 | ||
125 | *name = (nstart < nend ? nstart : NULL); | |
126 | *email = left+1; | |
127 | *(nend+1) = '\0'; | |
128 | *right++ = '\0'; | |
129 | ||
130 | return (*right == '\0' ? NULL : right); | |
131 | } | |
132 | ||
7c8ce308 JK |
133 | static void read_mailmap_line(struct string_list *map, char *buffer, |
134 | char **repo_abbrev) | |
135 | { | |
136 | char *name1 = NULL, *email1 = NULL, *name2 = NULL, *email2 = NULL; | |
137 | if (buffer[0] == '#') { | |
138 | static const char abbrev[] = "# repo-abbrev:"; | |
139 | int abblen = sizeof(abbrev) - 1; | |
140 | int len = strlen(buffer); | |
141 | ||
142 | if (!repo_abbrev) | |
143 | return; | |
144 | ||
145 | if (len && buffer[len - 1] == '\n') | |
146 | buffer[--len] = 0; | |
147 | if (!strncmp(buffer, abbrev, abblen)) { | |
148 | char *cp; | |
149 | ||
150 | if (repo_abbrev) | |
151 | free(*repo_abbrev); | |
152 | *repo_abbrev = xmalloc(len); | |
153 | ||
154 | for (cp = buffer + abblen; isspace(*cp); cp++) | |
155 | ; /* nothing */ | |
156 | strcpy(*repo_abbrev, cp); | |
157 | } | |
158 | return; | |
159 | } | |
160 | if ((name2 = parse_name_and_email(buffer, &name1, &email1, 0)) != NULL) | |
161 | parse_name_and_email(name2, &name2, &email2, 1); | |
162 | ||
163 | if (email1) | |
164 | add_mapping(map, name1, email1, name2, email2); | |
165 | } | |
166 | ||
167 | static int read_mailmap_file(struct string_list *map, const char *filename, | |
168 | char **repo_abbrev) | |
7c1c6782 JH |
169 | { |
170 | char buffer[1024]; | |
938a60d6 JK |
171 | FILE *f; |
172 | ||
173 | if (!filename) | |
174 | return 0; | |
175 | ||
176 | f = fopen(filename, "r"); | |
177 | if (!f) { | |
178 | if (errno == ENOENT) | |
179 | return 0; | |
180 | return error("unable to open mailmap at %s: %s", | |
181 | filename, strerror(errno)); | |
182 | } | |
7c1c6782 | 183 | |
7c8ce308 JK |
184 | while (fgets(buffer, sizeof(buffer), f) != NULL) |
185 | read_mailmap_line(map, buffer, repo_abbrev); | |
7c1c6782 JH |
186 | fclose(f); |
187 | return 0; | |
188 | } | |
189 | ||
08610900 JK |
190 | static void read_mailmap_buf(struct string_list *map, |
191 | const char *buf, unsigned long len, | |
192 | char **repo_abbrev) | |
193 | { | |
194 | while (len) { | |
195 | const char *end = strchrnul(buf, '\n'); | |
196 | unsigned long linelen = end - buf + 1; | |
197 | char *line = xmemdupz(buf, linelen); | |
198 | ||
199 | read_mailmap_line(map, line, repo_abbrev); | |
200 | ||
201 | free(line); | |
202 | buf += linelen; | |
203 | len -= linelen; | |
204 | } | |
205 | } | |
206 | ||
207 | static int read_mailmap_blob(struct string_list *map, | |
208 | const char *name, | |
209 | char **repo_abbrev) | |
210 | { | |
211 | unsigned char sha1[20]; | |
212 | char *buf; | |
213 | unsigned long size; | |
214 | enum object_type type; | |
215 | ||
216 | if (!name) | |
938a60d6 | 217 | return 0; |
08610900 | 218 | if (get_sha1(name, sha1) < 0) |
938a60d6 | 219 | return 0; |
08610900 JK |
220 | |
221 | buf = read_sha1_file(sha1, &type, &size); | |
222 | if (!buf) | |
938a60d6 | 223 | return error("unable to read mailmap object at %s", name); |
08610900 | 224 | if (type != OBJ_BLOB) |
938a60d6 | 225 | return error("mailmap is not a blob: %s", name); |
08610900 JK |
226 | |
227 | read_mailmap_buf(map, buf, size, repo_abbrev); | |
228 | ||
229 | free(buf); | |
230 | return 0; | |
231 | } | |
232 | ||
d551a488 MSO |
233 | int read_mailmap(struct string_list *map, char **repo_abbrev) |
234 | { | |
938a60d6 | 235 | int err = 0; |
8c473cec | 236 | |
0925ce4d | 237 | map->strdup_strings = 1; |
388c7f8a | 238 | map->cmp = strcasecmp; |
8c473cec JK |
239 | |
240 | if (!git_mailmap_blob && is_bare_repository()) | |
241 | git_mailmap_blob = "HEAD:.mailmap"; | |
242 | ||
938a60d6 JK |
243 | err |= read_mailmap_file(map, ".mailmap", repo_abbrev); |
244 | err |= read_mailmap_blob(map, git_mailmap_blob, repo_abbrev); | |
245 | err |= read_mailmap_file(map, git_mailmap_file, repo_abbrev); | |
246 | return err; | |
d551a488 MSO |
247 | } |
248 | ||
0925ce4d MSO |
249 | void clear_mailmap(struct string_list *map) |
250 | { | |
251 | debug_mm("mailmap: clearing %d entries...\n", map->nr); | |
252 | map->strdup_strings = 1; | |
253 | string_list_clear_func(map, free_mailmap_entry); | |
254 | debug_mm("mailmap: cleared\n"); | |
255 | } | |
256 | ||
388c7f8a JH |
257 | /* |
258 | * Look for an entry in map that match string[0:len]; string[len] | |
259 | * does not have to be NUL (but it could be). | |
260 | */ | |
261 | static struct string_list_item *lookup_prefix(struct string_list *map, | |
262 | const char *string, size_t len) | |
263 | { | |
264 | int i = string_list_find_insert_index(map, string, 1); | |
265 | if (i < 0) { | |
266 | /* exact match */ | |
267 | i = -1 - i; | |
268 | if (!string[len]) | |
269 | return &map->items[i]; | |
270 | /* | |
271 | * that map entry matches exactly to the string, including | |
272 | * the cruft at the end beyond "len". That is not a match | |
273 | * with string[0:len] that we are looking for. | |
274 | */ | |
275 | } else if (!string[len]) { | |
276 | /* | |
277 | * asked with the whole string, and got nothing. No | |
278 | * matching entry can exist in the map. | |
279 | */ | |
280 | return NULL; | |
281 | } | |
282 | ||
283 | /* | |
284 | * i is at the exact match to an overlong key, or location the | |
285 | * overlong key would be inserted, which must come after the | |
286 | * real location of the key if one exists. | |
287 | */ | |
288 | while (0 <= --i && i < map->nr) { | |
289 | int cmp = strncasecmp(map->items[i].string, string, len); | |
290 | if (cmp < 0) | |
291 | /* | |
292 | * "i" points at a key definitely below the prefix; | |
293 | * the map does not have string[0:len] in it. | |
294 | */ | |
295 | break; | |
296 | else if (!cmp && !map->items[i].string[len]) | |
297 | /* found it */ | |
298 | return &map->items[i]; | |
299 | /* | |
300 | * otherwise, the string at "i" may be string[0:len] | |
301 | * followed by a string that sorts later than string[len:]; | |
302 | * keep trying. | |
303 | */ | |
304 | } | |
305 | return NULL; | |
306 | } | |
307 | ||
0925ce4d | 308 | int map_user(struct string_list *map, |
ea02ffa3 AP |
309 | const char **email, size_t *emaillen, |
310 | const char **name, size_t *namelen) | |
7c1c6782 | 311 | { |
c455c87c | 312 | struct string_list_item *item; |
0925ce4d | 313 | struct mailmap_entry *me; |
388c7f8a | 314 | |
ea02ffa3 AP |
315 | debug_mm("map_user: map '%.*s' <%.*s>\n", |
316 | *name, *namelen, *emaillen, *email); | |
388c7f8a | 317 | |
ea02ffa3 | 318 | item = lookup_prefix(map, *email, *emaillen); |
0925ce4d MSO |
319 | if (item != NULL) { |
320 | me = (struct mailmap_entry *)item->util; | |
321 | if (me->namemap.nr) { | |
322 | /* The item has multiple items, so we'll look up on name too */ | |
323 | /* If the name is not found, we choose the simple entry */ | |
ea02ffa3 AP |
324 | struct string_list_item *subitem; |
325 | subitem = lookup_prefix(&me->namemap, *name, *namelen); | |
0925ce4d MSO |
326 | if (subitem) |
327 | item = subitem; | |
328 | } | |
329 | } | |
7c1c6782 | 330 | if (item != NULL) { |
0925ce4d | 331 | struct mailmap_info *mi = (struct mailmap_info *)item->util; |
ea02ffa3 | 332 | if (mi->name == NULL && mi->email == NULL) { |
0925ce4d MSO |
333 | debug_mm("map_user: -- (no simple mapping)\n"); |
334 | return 0; | |
335 | } | |
ea02ffa3 AP |
336 | if (mi->email) { |
337 | *email = mi->email; | |
338 | *emaillen = strlen(*email); | |
339 | } | |
340 | if (mi->name) { | |
341 | *name = mi->name; | |
342 | *namelen = strlen(*name); | |
343 | } | |
344 | debug_mm("map_user: to '%.*s' <.*%s>\n", *namelen, *name, | |
345 | *emaillen, *email); | |
7c1c6782 JH |
346 | return 1; |
347 | } | |
0925ce4d | 348 | debug_mm("map_user: --\n"); |
7c1c6782 JH |
349 | return 0; |
350 | } |