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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" |
cbd53a21 | 4 | #include "object-store.h" |
7c1c6782 | 5 | |
0925ce4d MSO |
6 | #define DEBUG_MAILMAP 0 |
7 | #if DEBUG_MAILMAP | |
8 | #define debug_mm(...) fprintf(stderr, __VA_ARGS__) | |
fbfba7ad | 9 | #define debug_str(X) ((X) ? (X) : "(none)") |
0925ce4d MSO |
10 | #else |
11 | static inline void debug_mm(const char *format, ...) {} | |
fbfba7ad | 12 | static inline const char *debug_str(const char *s) { return s; } |
0925ce4d MSO |
13 | #endif |
14 | ||
d551a488 | 15 | const char *git_mailmap_file; |
08610900 | 16 | const char *git_mailmap_blob; |
0925ce4d MSO |
17 | |
18 | struct mailmap_info { | |
19 | char *name; | |
20 | char *email; | |
21 | }; | |
22 | ||
23 | struct mailmap_entry { | |
24 | /* name and email for the simple mail-only case */ | |
25 | char *name; | |
26 | char *email; | |
27 | ||
28 | /* name and email for the complex mail and name matching case */ | |
29 | struct string_list namemap; | |
30 | }; | |
31 | ||
32 | static void free_mailmap_info(void *p, const char *s) | |
33 | { | |
34 | struct mailmap_info *mi = (struct mailmap_info *)p; | |
bd237945 JH |
35 | debug_mm("mailmap: -- complex: '%s' -> '%s' <%s>\n", |
36 | s, debug_str(mi->name), debug_str(mi->email)); | |
0925ce4d MSO |
37 | free(mi->name); |
38 | free(mi->email); | |
39 | } | |
40 | ||
41 | static void free_mailmap_entry(void *p, const char *s) | |
42 | { | |
43 | struct mailmap_entry *me = (struct mailmap_entry *)p; | |
bd237945 JH |
44 | debug_mm("mailmap: removing entries for <%s>, with %d sub-entries\n", |
45 | s, me->namemap.nr); | |
46 | debug_mm("mailmap: - simple: '%s' <%s>\n", | |
47 | debug_str(me->name), debug_str(me->email)); | |
fbfba7ad | 48 | |
0925ce4d MSO |
49 | free(me->name); |
50 | free(me->email); | |
51 | ||
52 | me->namemap.strdup_strings = 1; | |
53 | string_list_clear_func(&me->namemap, free_mailmap_info); | |
54 | } | |
55 | ||
de2f95eb JH |
56 | /* |
57 | * On some systems (e.g. MinGW 4.0), string.h has _only_ inline | |
58 | * definition of strcasecmp and no non-inline implementation is | |
59 | * supplied anywhere, which is, eh, "unusual"; we cannot take an | |
60 | * address of such a function to store it in namemap.cmp. This is | |
61 | * here as a workaround---do not assign strcasecmp directly to | |
62 | * namemap.cmp until we know no systems that matter have such an | |
63 | * "unusual" string.h. | |
64 | */ | |
65 | static int namemap_cmp(const char *a, const char *b) | |
66 | { | |
67 | return strcasecmp(a, b); | |
68 | } | |
69 | ||
0925ce4d | 70 | static void add_mapping(struct string_list *map, |
bd237945 JH |
71 | char *new_name, char *new_email, |
72 | char *old_name, char *old_email) | |
0925ce4d MSO |
73 | { |
74 | struct mailmap_entry *me; | |
63226218 | 75 | struct string_list_item *item; |
bf637803 | 76 | |
0925ce4d MSO |
77 | if (old_email == NULL) { |
78 | old_email = new_email; | |
79 | new_email = NULL; | |
80 | } | |
81 | ||
63226218 SB |
82 | item = string_list_insert(map, old_email); |
83 | if (item->util) { | |
84 | me = (struct mailmap_entry *)item->util; | |
0925ce4d | 85 | } else { |
97e751be JH |
86 | me = xcalloc(1, sizeof(struct mailmap_entry)); |
87 | me->namemap.strdup_strings = 1; | |
de2f95eb | 88 | me->namemap.cmp = namemap_cmp; |
97e751be | 89 | item->util = me; |
0925ce4d | 90 | } |
0925ce4d MSO |
91 | |
92 | if (old_name == NULL) { | |
63226218 SB |
93 | debug_mm("mailmap: adding (simple) entry for '%s'\n", old_email); |
94 | ||
0925ce4d | 95 | /* Replace current name and new email for simple entry */ |
d8d2eb7d JM |
96 | if (new_name) { |
97 | free(me->name); | |
0925ce4d | 98 | me->name = xstrdup(new_name); |
d8d2eb7d JM |
99 | } |
100 | if (new_email) { | |
101 | free(me->email); | |
0925ce4d | 102 | me->email = xstrdup(new_email); |
d8d2eb7d | 103 | } |
0925ce4d | 104 | } else { |
74b531f6 | 105 | struct mailmap_info *mi = xcalloc(1, sizeof(struct mailmap_info)); |
63226218 | 106 | debug_mm("mailmap: adding (complex) entry for '%s'\n", old_email); |
13092a91 JH |
107 | mi->name = xstrdup_or_null(new_name); |
108 | mi->email = xstrdup_or_null(new_email); | |
78a395d3 | 109 | string_list_insert(&me->namemap, old_name)->util = mi; |
0925ce4d MSO |
110 | } |
111 | ||
112 | debug_mm("mailmap: '%s' <%s> -> '%s' <%s>\n", | |
bd237945 JH |
113 | debug_str(old_name), old_email, |
114 | debug_str(new_name), debug_str(new_email)); | |
0925ce4d MSO |
115 | } |
116 | ||
5288dd58 | 117 | static char *parse_name_and_email(char *buffer, char **name, |
bd237945 | 118 | char **email, int allow_empty_email) |
0925ce4d MSO |
119 | { |
120 | char *left, *right, *nstart, *nend; | |
2af202be | 121 | *name = *email = NULL; |
0925ce4d MSO |
122 | |
123 | if ((left = strchr(buffer, '<')) == NULL) | |
124 | return NULL; | |
125 | if ((right = strchr(left+1, '>')) == NULL) | |
126 | return NULL; | |
5288dd58 | 127 | if (!allow_empty_email && (left+1 == right)) |
0925ce4d MSO |
128 | return NULL; |
129 | ||
130 | /* remove whitespace from beginning and end of name */ | |
131 | nstart = buffer; | |
132 | while (isspace(*nstart) && nstart < left) | |
133 | ++nstart; | |
134 | nend = left-1; | |
3174bc5c | 135 | while (nend > nstart && isspace(*nend)) |
0925ce4d MSO |
136 | --nend; |
137 | ||
8c381151 | 138 | *name = (nstart <= nend ? nstart : NULL); |
0925ce4d MSO |
139 | *email = left+1; |
140 | *(nend+1) = '\0'; | |
141 | *right++ = '\0'; | |
142 | ||
143 | return (*right == '\0' ? NULL : right); | |
144 | } | |
145 | ||
4e168333 | 146 | static void read_mailmap_line(struct string_list *map, char *buffer) |
7c8ce308 JK |
147 | { |
148 | char *name1 = NULL, *email1 = NULL, *name2 = NULL, *email2 = NULL; | |
7c8ce308 | 149 | |
4e168333 | 150 | if (buffer[0] == '#') |
7c8ce308 | 151 | return; |
4e168333 | 152 | |
7c8ce308 JK |
153 | if ((name2 = parse_name_and_email(buffer, &name1, &email1, 0)) != NULL) |
154 | parse_name_and_email(name2, &name2, &email2, 1); | |
155 | ||
156 | if (email1) | |
157 | add_mapping(map, name1, email1, name2, email2); | |
158 | } | |
159 | ||
4e168333 | 160 | static int read_mailmap_file(struct string_list *map, const char *filename) |
7c1c6782 JH |
161 | { |
162 | char buffer[1024]; | |
938a60d6 JK |
163 | FILE *f; |
164 | ||
165 | if (!filename) | |
166 | return 0; | |
167 | ||
168 | f = fopen(filename, "r"); | |
169 | if (!f) { | |
170 | if (errno == ENOENT) | |
171 | return 0; | |
60901e4c | 172 | return error_errno("unable to open mailmap at %s", filename); |
938a60d6 | 173 | } |
7c1c6782 | 174 | |
7c8ce308 | 175 | while (fgets(buffer, sizeof(buffer), f) != NULL) |
4e168333 | 176 | read_mailmap_line(map, buffer); |
7c1c6782 JH |
177 | fclose(f); |
178 | return 0; | |
179 | } | |
180 | ||
4e168333 | 181 | static void read_mailmap_string(struct string_list *map, char *buf) |
08610900 | 182 | { |
f972a165 JK |
183 | while (*buf) { |
184 | char *end = strchrnul(buf, '\n'); | |
08610900 | 185 | |
f972a165 JK |
186 | if (*end) |
187 | *end++ = '\0'; | |
08610900 | 188 | |
4e168333 | 189 | read_mailmap_line(map, buf); |
f972a165 | 190 | buf = end; |
08610900 JK |
191 | } |
192 | } | |
193 | ||
4e168333 | 194 | static int read_mailmap_blob(struct string_list *map, const char *name) |
08610900 | 195 | { |
15be4a5d | 196 | struct object_id oid; |
08610900 JK |
197 | char *buf; |
198 | unsigned long size; | |
199 | enum object_type type; | |
200 | ||
201 | if (!name) | |
938a60d6 | 202 | return 0; |
15be4a5d | 203 | if (get_oid(name, &oid) < 0) |
938a60d6 | 204 | return 0; |
08610900 | 205 | |
b4f5aca4 | 206 | buf = read_object_file(&oid, &type, &size); |
08610900 | 207 | if (!buf) |
938a60d6 | 208 | return error("unable to read mailmap object at %s", name); |
08610900 | 209 | if (type != OBJ_BLOB) |
938a60d6 | 210 | return error("mailmap is not a blob: %s", name); |
08610900 | 211 | |
4e168333 | 212 | read_mailmap_string(map, buf); |
08610900 JK |
213 | |
214 | free(buf); | |
215 | return 0; | |
216 | } | |
217 | ||
4e168333 | 218 | int read_mailmap(struct string_list *map) |
d551a488 | 219 | { |
938a60d6 | 220 | int err = 0; |
8c473cec | 221 | |
0925ce4d | 222 | map->strdup_strings = 1; |
de2f95eb | 223 | map->cmp = namemap_cmp; |
8c473cec JK |
224 | |
225 | if (!git_mailmap_blob && is_bare_repository()) | |
226 | git_mailmap_blob = "HEAD:.mailmap"; | |
227 | ||
4e168333 | 228 | err |= read_mailmap_file(map, ".mailmap"); |
5735dc5a | 229 | if (startup_info->have_repository) |
4e168333 ÆAB |
230 | err |= read_mailmap_blob(map, git_mailmap_blob); |
231 | err |= read_mailmap_file(map, git_mailmap_file); | |
938a60d6 | 232 | return err; |
d551a488 MSO |
233 | } |
234 | ||
0925ce4d MSO |
235 | void clear_mailmap(struct string_list *map) |
236 | { | |
237 | debug_mm("mailmap: clearing %d entries...\n", map->nr); | |
238 | map->strdup_strings = 1; | |
239 | string_list_clear_func(map, free_mailmap_entry); | |
240 | debug_mm("mailmap: cleared\n"); | |
241 | } | |
242 | ||
388c7f8a JH |
243 | /* |
244 | * Look for an entry in map that match string[0:len]; string[len] | |
245 | * does not have to be NUL (but it could be). | |
246 | */ | |
247 | static struct string_list_item *lookup_prefix(struct string_list *map, | |
248 | const char *string, size_t len) | |
249 | { | |
250 | int i = string_list_find_insert_index(map, string, 1); | |
251 | if (i < 0) { | |
252 | /* exact match */ | |
253 | i = -1 - i; | |
254 | if (!string[len]) | |
255 | return &map->items[i]; | |
256 | /* | |
257 | * that map entry matches exactly to the string, including | |
258 | * the cruft at the end beyond "len". That is not a match | |
259 | * with string[0:len] that we are looking for. | |
260 | */ | |
261 | } else if (!string[len]) { | |
262 | /* | |
263 | * asked with the whole string, and got nothing. No | |
264 | * matching entry can exist in the map. | |
265 | */ | |
266 | return NULL; | |
267 | } | |
268 | ||
269 | /* | |
270 | * i is at the exact match to an overlong key, or location the | |
271 | * overlong key would be inserted, which must come after the | |
272 | * real location of the key if one exists. | |
273 | */ | |
274 | while (0 <= --i && i < map->nr) { | |
275 | int cmp = strncasecmp(map->items[i].string, string, len); | |
276 | if (cmp < 0) | |
277 | /* | |
278 | * "i" points at a key definitely below the prefix; | |
279 | * the map does not have string[0:len] in it. | |
280 | */ | |
281 | break; | |
282 | else if (!cmp && !map->items[i].string[len]) | |
283 | /* found it */ | |
284 | return &map->items[i]; | |
285 | /* | |
286 | * otherwise, the string at "i" may be string[0:len] | |
287 | * followed by a string that sorts later than string[len:]; | |
288 | * keep trying. | |
289 | */ | |
290 | } | |
291 | return NULL; | |
292 | } | |
293 | ||
0925ce4d | 294 | int map_user(struct string_list *map, |
bd237945 JH |
295 | const char **email, size_t *emaillen, |
296 | const char **name, size_t *namelen) | |
7c1c6782 | 297 | { |
c455c87c | 298 | struct string_list_item *item; |
0925ce4d | 299 | struct mailmap_entry *me; |
388c7f8a | 300 | |
ea02ffa3 | 301 | debug_mm("map_user: map '%.*s' <%.*s>\n", |
bd237945 JH |
302 | (int)*namelen, debug_str(*name), |
303 | (int)*emaillen, debug_str(*email)); | |
388c7f8a | 304 | |
ea02ffa3 | 305 | item = lookup_prefix(map, *email, *emaillen); |
0925ce4d MSO |
306 | if (item != NULL) { |
307 | me = (struct mailmap_entry *)item->util; | |
308 | if (me->namemap.nr) { | |
bd237945 JH |
309 | /* |
310 | * The item has multiple items, so we'll look up on | |
311 | * name too. If the name is not found, we choose the | |
312 | * simple entry. | |
313 | */ | |
ea02ffa3 AP |
314 | struct string_list_item *subitem; |
315 | subitem = lookup_prefix(&me->namemap, *name, *namelen); | |
0925ce4d MSO |
316 | if (subitem) |
317 | item = subitem; | |
318 | } | |
319 | } | |
7c1c6782 | 320 | if (item != NULL) { |
0925ce4d | 321 | struct mailmap_info *mi = (struct mailmap_info *)item->util; |
ea02ffa3 | 322 | if (mi->name == NULL && mi->email == NULL) { |
0925ce4d MSO |
323 | debug_mm("map_user: -- (no simple mapping)\n"); |
324 | return 0; | |
325 | } | |
ea02ffa3 AP |
326 | if (mi->email) { |
327 | *email = mi->email; | |
328 | *emaillen = strlen(*email); | |
329 | } | |
330 | if (mi->name) { | |
331 | *name = mi->name; | |
332 | *namelen = strlen(*name); | |
333 | } | |
bd237945 JH |
334 | debug_mm("map_user: to '%.*s' <%.*s>\n", |
335 | (int)*namelen, debug_str(*name), | |
336 | (int)*emaillen, debug_str(*email)); | |
7c1c6782 JH |
337 | return 1; |
338 | } | |
0925ce4d | 339 | debug_mm("map_user: --\n"); |
7c1c6782 JH |
340 | return 0; |
341 | } |