Add map_user() and clear_mailmap() to mailmap
[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;
0925ce4d
MSO
13
14struct mailmap_info {
15 char *name;
16 char *email;
17};
18
19struct mailmap_entry {
20 /* name and email for the simple mail-only case */
21 char *name;
22 char *email;
23
24 /* name and email for the complex mail and name matching case */
25 struct string_list namemap;
26};
27
28static void free_mailmap_info(void *p, const char *s)
29{
30 struct mailmap_info *mi = (struct mailmap_info *)p;
31 debug_mm("mailmap: -- complex: '%s' -> '%s' <%s>\n", s, mi->name, mi->email);
32 free(mi->name);
33 free(mi->email);
34}
35
36static void free_mailmap_entry(void *p, const char *s)
37{
38 struct mailmap_entry *me = (struct mailmap_entry *)p;
39 debug_mm("mailmap: removing entries for <%s>, with %d sub-entries\n", s, me->namemap.nr);
40 debug_mm("mailmap: - simple: '%s' <%s>\n", me->name, me->email);
41 free(me->name);
42 free(me->email);
43
44 me->namemap.strdup_strings = 1;
45 string_list_clear_func(&me->namemap, free_mailmap_info);
46}
47
48static void add_mapping(struct string_list *map,
49 char *new_name, char *new_email, char *old_name, char *old_email)
50{
51 struct mailmap_entry *me;
52 int index;
53 if (old_email == NULL) {
54 old_email = new_email;
55 new_email = NULL;
56 }
57
58 if ((index = string_list_find_insert_index(map, old_email, 1)) < 0) {
59 /* mailmap entry exists, invert index value */
60 index = -1 - index;
61 } else {
62 /* create mailmap entry */
63 struct string_list_item *item = string_list_insert_at_index(index, old_email, map);
64 item->util = xmalloc(sizeof(struct mailmap_entry));
65 memset(item->util, 0, sizeof(struct mailmap_entry));
66 ((struct mailmap_entry *)item->util)->namemap.strdup_strings = 1;
67 }
68 me = (struct mailmap_entry *)map->items[index].util;
69
70 if (old_name == NULL) {
71 debug_mm("mailmap: adding (simple) entry for %s at index %d\n", old_email, index);
72 /* Replace current name and new email for simple entry */
73 free(me->name);
74 free(me->email);
75 if (new_name)
76 me->name = xstrdup(new_name);
77 if (new_email)
78 me->email = xstrdup(new_email);
79 } else {
80 struct mailmap_info *mi = xmalloc(sizeof(struct mailmap_info));
81 debug_mm("mailmap: adding (complex) entry for %s at index %d\n", old_email, index);
82 if (new_name)
83 mi->name = xstrdup(new_name);
84 if (new_email)
85 mi->email = xstrdup(new_email);
86 string_list_insert(old_name, &me->namemap)->util = mi;
87 }
88
89 debug_mm("mailmap: '%s' <%s> -> '%s' <%s>\n",
90 old_name, old_email, new_name, new_email);
91}
92
93static char *parse_name_and_email(char *buffer, char **name, char **email)
94{
95 char *left, *right, *nstart, *nend;
96 *name = *email = 0;
97
98 if ((left = strchr(buffer, '<')) == NULL)
99 return NULL;
100 if ((right = strchr(left+1, '>')) == NULL)
101 return NULL;
102 if (left+1 == right)
103 return NULL;
104
105 /* remove whitespace from beginning and end of name */
106 nstart = buffer;
107 while (isspace(*nstart) && nstart < left)
108 ++nstart;
109 nend = left-1;
110 while (isspace(*nend) && nend > nstart)
111 --nend;
112
113 *name = (nstart < nend ? nstart : NULL);
114 *email = left+1;
115 *(nend+1) = '\0';
116 *right++ = '\0';
117
118 return (*right == '\0' ? NULL : right);
119}
120
d551a488 121static int read_single_mailmap(struct string_list *map, const char *filename, char **repo_abbrev)
7c1c6782
JH
122{
123 char buffer[1024];
d551a488 124 FILE *f = (filename == NULL ? NULL : fopen(filename, "r"));
7c1c6782
JH
125
126 if (f == NULL)
127 return 1;
128 while (fgets(buffer, sizeof(buffer), f) != NULL) {
0925ce4d 129 char *name1 = 0, *email1 = 0, *name2 = 0, *email2 = 0;
7c1c6782
JH
130 if (buffer[0] == '#') {
131 static const char abbrev[] = "# repo-abbrev:";
132 int abblen = sizeof(abbrev) - 1;
133 int len = strlen(buffer);
134
8503ee43
AR
135 if (!repo_abbrev)
136 continue;
137
7c1c6782
JH
138 if (len && buffer[len - 1] == '\n')
139 buffer[--len] = 0;
140 if (!strncmp(buffer, abbrev, abblen)) {
141 char *cp;
142
143 if (repo_abbrev)
144 free(*repo_abbrev);
145 *repo_abbrev = xmalloc(len);
146
147 for (cp = buffer + abblen; isspace(*cp); cp++)
148 ; /* nothing */
149 strcpy(*repo_abbrev, cp);
150 }
151 continue;
152 }
0925ce4d
MSO
153 if ((name2 = parse_name_and_email(buffer, &name1, &email1)) != NULL)
154 parse_name_and_email(name2, &name2, &email2);
155
156 if (email1)
157 add_mapping(map, name1, email1, name2, email2);
7c1c6782
JH
158 }
159 fclose(f);
160 return 0;
161}
162
d551a488
MSO
163int read_mailmap(struct string_list *map, char **repo_abbrev)
164{
0925ce4d 165 map->strdup_strings = 1;
d551a488
MSO
166 /* each failure returns 1, so >1 means both calls failed */
167 return read_single_mailmap(map, ".mailmap", repo_abbrev) +
168 read_single_mailmap(map, git_mailmap_file, repo_abbrev) > 1;
169}
170
0925ce4d
MSO
171void clear_mailmap(struct string_list *map)
172{
173 debug_mm("mailmap: clearing %d entries...\n", map->nr);
174 map->strdup_strings = 1;
175 string_list_clear_func(map, free_mailmap_entry);
176 debug_mm("mailmap: cleared\n");
177}
178
179int map_user(struct string_list *map,
180 char *email, int maxlen_email, char *name, int maxlen_name)
7c1c6782
JH
181{
182 char *p;
c455c87c 183 struct string_list_item *item;
0925ce4d 184 struct mailmap_entry *me;
7c1c6782
JH
185 char buf[1024], *mailbuf;
186 int i;
187
0925ce4d 188 /* figure out space requirement for email */
7c1c6782 189 p = strchr(email, '>');
0925ce4d
MSO
190 if (!p) {
191 /* email passed in might not be wrapped in <>, but end with a \0 */
192 p = memchr(email, '\0', maxlen_email);
193 if (p == 0)
194 return 0;
195 }
7c1c6782
JH
196 if (p - email + 1 < sizeof(buf))
197 mailbuf = buf;
198 else
199 mailbuf = xmalloc(p - email + 1);
200
201 /* downcase the email address */
202 for (i = 0; i < p - email; i++)
203 mailbuf[i] = tolower(email[i]);
204 mailbuf[i] = 0;
0925ce4d
MSO
205
206 debug_mm("map_user: map '%s' <%s>\n", name, mailbuf);
c455c87c 207 item = string_list_lookup(mailbuf, map);
0925ce4d
MSO
208 if (item != NULL) {
209 me = (struct mailmap_entry *)item->util;
210 if (me->namemap.nr) {
211 /* The item has multiple items, so we'll look up on name too */
212 /* If the name is not found, we choose the simple entry */
213 struct string_list_item *subitem = string_list_lookup(name, &me->namemap);
214 if (subitem)
215 item = subitem;
216 }
217 }
7c1c6782
JH
218 if (mailbuf != buf)
219 free(mailbuf);
220 if (item != NULL) {
0925ce4d
MSO
221 struct mailmap_info *mi = (struct mailmap_info *)item->util;
222 if (mi->name == NULL && (mi->email == NULL || maxlen_email == 0)) {
223 debug_mm("map_user: -- (no simple mapping)\n");
224 return 0;
225 }
226 if (maxlen_email && mi->email)
227 strlcpy(email, mi->email, maxlen_email);
228 if (maxlen_name && mi->name)
229 strlcpy(name, mi->name, maxlen_name);
230 debug_mm("map_user: to '%s' <%s>\n", name, mi->email ? mi->email : "");
7c1c6782
JH
231 return 1;
232 }
0925ce4d 233 debug_mm("map_user: --\n");
7c1c6782
JH
234 return 0;
235}
0925ce4d
MSO
236
237int map_email(struct string_list *map, const char *email, char *name, int maxlen)
238{
239 return map_user(map, (char *)email, 0, name, maxlen);
240}