mailmap: debug: eliminate -Wformat field precision type warning
[git/git.git] / mailmap.c
CommitLineData
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
9static inline void debug_mm(const char *format, ...) {}
10#endif
11
d551a488 12const char *git_mailmap_file;
08610900 13const char *git_mailmap_blob;
0925ce4d
MSO
14
15struct mailmap_info {
16 char *name;
17 char *email;
18};
19
20struct 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
29static 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
37static 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
49static 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
100static 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;
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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))
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119 --nend;
120
8c381151 121 *name = (nstart <= nend ? nstart : NULL);
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MSO
122 *email = left+1;
123 *(nend+1) = '\0';
124 *right++ = '\0';
125
126 return (*right == '\0' ? NULL : right);
127}
128
7c8ce308
JK
129static 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
163static 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
186static 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
203static 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
229int 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
245void 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 */
257static 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 304int 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}