gitk: Second try to work around the command line limit on Windows
[git/dscho.git] / mailmap.c
blobb68c1fec9c2ca69f313bc3fa16461c6c9150c53d
1 #include "cache.h"
2 #include "string-list.h"
3 #include "mailmap.h"
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
12 const char *git_mailmap_file;
14 struct mailmap_info {
15 char *name;
16 char *email;
19 struct mailmap_entry {
20 /* name and email for the simple mail-only case */
21 char *name;
22 char *email;
24 /* name and email for the complex mail and name matching case */
25 struct string_list namemap;
28 static void free_mailmap_info(void *p, const char *s)
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);
36 static void free_mailmap_entry(void *p, const char *s)
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);
44 me->namemap.strdup_strings = 1;
45 string_list_clear_func(&me->namemap, free_mailmap_info);
48 static void add_mapping(struct string_list *map,
49 char *new_name, char *new_email, char *old_name, char *old_email)
51 struct mailmap_entry *me;
52 int index;
53 char *p;
55 if (old_email)
56 for (p = old_email; *p; p++)
57 *p = tolower(*p);
58 if (new_email)
59 for (p = new_email; *p; p++)
60 *p = tolower(*p);
62 if (old_email == NULL) {
63 old_email = new_email;
64 new_email = NULL;
67 if ((index = string_list_find_insert_index(map, old_email, 1)) < 0) {
68 /* mailmap entry exists, invert index value */
69 index = -1 - index;
70 } else {
71 /* create mailmap entry */
72 struct string_list_item *item = string_list_insert_at_index(index, old_email, map);
73 item->util = xmalloc(sizeof(struct mailmap_entry));
74 memset(item->util, 0, sizeof(struct mailmap_entry));
75 ((struct mailmap_entry *)item->util)->namemap.strdup_strings = 1;
77 me = (struct mailmap_entry *)map->items[index].util;
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 */
82 free(me->name);
83 free(me->email);
84 if (new_name)
85 me->name = xstrdup(new_name);
86 if (new_email)
87 me->email = xstrdup(new_email);
88 } else {
89 struct mailmap_info *mi = xmalloc(sizeof(struct mailmap_info));
90 debug_mm("mailmap: adding (complex) entry for %s at index %d\n", old_email, index);
91 if (new_name)
92 mi->name = xstrdup(new_name);
93 if (new_email)
94 mi->email = xstrdup(new_email);
95 string_list_insert(old_name, &me->namemap)->util = mi;
98 debug_mm("mailmap: '%s' <%s> -> '%s' <%s>\n",
99 old_name, old_email, new_name, new_email);
102 static char *parse_name_and_email(char *buffer, char **name,
103 char **email, int allow_empty_email)
105 char *left, *right, *nstart, *nend;
106 *name = *email = NULL;
108 if ((left = strchr(buffer, '<')) == NULL)
109 return NULL;
110 if ((right = strchr(left+1, '>')) == NULL)
111 return NULL;
112 if (!allow_empty_email && (left+1 == right))
113 return NULL;
115 /* remove whitespace from beginning and end of name */
116 nstart = buffer;
117 while (isspace(*nstart) && nstart < left)
118 ++nstart;
119 nend = left-1;
120 while (isspace(*nend) && nend > nstart)
121 --nend;
123 *name = (nstart < nend ? nstart : NULL);
124 *email = left+1;
125 *(nend+1) = '\0';
126 *right++ = '\0';
128 return (*right == '\0' ? NULL : right);
131 static int read_single_mailmap(struct string_list *map, const char *filename, char **repo_abbrev)
133 char buffer[1024];
134 FILE *f = (filename == NULL ? NULL : fopen(filename, "r"));
136 if (f == NULL)
137 return 1;
138 while (fgets(buffer, sizeof(buffer), f) != NULL) {
139 char *name1 = NULL, *email1 = NULL, *name2 = NULL, *email2 = NULL;
140 if (buffer[0] == '#') {
141 static const char abbrev[] = "# repo-abbrev:";
142 int abblen = sizeof(abbrev) - 1;
143 int len = strlen(buffer);
145 if (!repo_abbrev)
146 continue;
148 if (len && buffer[len - 1] == '\n')
149 buffer[--len] = 0;
150 if (!strncmp(buffer, abbrev, abblen)) {
151 char *cp;
153 if (repo_abbrev)
154 free(*repo_abbrev);
155 *repo_abbrev = xmalloc(len);
157 for (cp = buffer + abblen; isspace(*cp); cp++)
158 ; /* nothing */
159 strcpy(*repo_abbrev, cp);
161 continue;
163 if ((name2 = parse_name_and_email(buffer, &name1, &email1, 0)) != NULL)
164 parse_name_and_email(name2, &name2, &email2, 1);
166 if (email1)
167 add_mapping(map, name1, email1, name2, email2);
169 fclose(f);
170 return 0;
173 int read_mailmap(struct string_list *map, char **repo_abbrev)
175 map->strdup_strings = 1;
176 /* each failure returns 1, so >1 means both calls failed */
177 return read_single_mailmap(map, ".mailmap", repo_abbrev) +
178 read_single_mailmap(map, git_mailmap_file, repo_abbrev) > 1;
181 void clear_mailmap(struct string_list *map)
183 debug_mm("mailmap: clearing %d entries...\n", map->nr);
184 map->strdup_strings = 1;
185 string_list_clear_func(map, free_mailmap_entry);
186 debug_mm("mailmap: cleared\n");
189 int map_user(struct string_list *map,
190 char *email, int maxlen_email, char *name, int maxlen_name)
192 char *p;
193 struct string_list_item *item;
194 struct mailmap_entry *me;
195 char buf[1024], *mailbuf;
196 int i;
198 /* figure out space requirement for email */
199 p = strchr(email, '>');
200 if (!p) {
201 /* email passed in might not be wrapped in <>, but end with a \0 */
202 p = memchr(email, '\0', maxlen_email);
203 if (!p)
204 return 0;
206 if (p - email + 1 < sizeof(buf))
207 mailbuf = buf;
208 else
209 mailbuf = xmalloc(p - email + 1);
211 /* downcase the email address */
212 for (i = 0; i < p - email; i++)
213 mailbuf[i] = tolower(email[i]);
214 mailbuf[i] = 0;
216 debug_mm("map_user: map '%s' <%s>\n", name, mailbuf);
217 item = string_list_lookup(mailbuf, map);
218 if (item != NULL) {
219 me = (struct mailmap_entry *)item->util;
220 if (me->namemap.nr) {
221 /* The item has multiple items, so we'll look up on name too */
222 /* If the name is not found, we choose the simple entry */
223 struct string_list_item *subitem = string_list_lookup(name, &me->namemap);
224 if (subitem)
225 item = subitem;
228 if (mailbuf != buf)
229 free(mailbuf);
230 if (item != NULL) {
231 struct mailmap_info *mi = (struct mailmap_info *)item->util;
232 if (mi->name == NULL && (mi->email == NULL || maxlen_email == 0)) {
233 debug_mm("map_user: -- (no simple mapping)\n");
234 return 0;
236 if (maxlen_email && mi->email)
237 strlcpy(email, mi->email, maxlen_email);
238 if (maxlen_name && mi->name)
239 strlcpy(name, mi->name, maxlen_name);
240 debug_mm("map_user: to '%s' <%s>\n", name, mi->email ? mi->email : "");
241 return 1;
243 debug_mm("map_user: --\n");
244 return 0;