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1 | #include "cache.h" | |
2 | #include "string-list.h" | |
3 | #include "mailmap.h" | |
4 | ||
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 | ||
12 | const char *git_mailmap_file; | |
13 | ||
14 | struct mailmap_info { | |
15 | char *name; | |
16 | char *email; | |
17 | }; | |
18 | ||
19 | struct 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 | ||
28 | static 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 | ||
36 | static 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 | ||
48 | static 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 | char *p; | |
54 | ||
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); | |
61 | ||
62 | if (old_email == NULL) { | |
63 | old_email = new_email; | |
64 | new_email = NULL; | |
65 | } | |
66 | ||
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(map, index, old_email); | |
73 | item->util = xcalloc(1, sizeof(struct mailmap_entry)); | |
74 | ((struct mailmap_entry *)item->util)->namemap.strdup_strings = 1; | |
75 | } | |
76 | me = (struct mailmap_entry *)map->items[index].util; | |
77 | ||
78 | if (old_name == NULL) { | |
79 | debug_mm("mailmap: adding (simple) entry for %s at index %d\n", old_email, index); | |
80 | /* Replace current name and new email for simple entry */ | |
81 | if (new_name) { | |
82 | free(me->name); | |
83 | me->name = xstrdup(new_name); | |
84 | } | |
85 | if (new_email) { | |
86 | free(me->email); | |
87 | me->email = xstrdup(new_email); | |
88 | } | |
89 | } else { | |
90 | struct mailmap_info *mi = xcalloc(1, sizeof(struct mailmap_info)); | |
91 | debug_mm("mailmap: adding (complex) entry for %s at index %d\n", old_email, index); | |
92 | if (new_name) | |
93 | mi->name = xstrdup(new_name); | |
94 | if (new_email) | |
95 | mi->email = xstrdup(new_email); | |
96 | string_list_insert(&me->namemap, old_name)->util = mi; | |
97 | } | |
98 | ||
99 | debug_mm("mailmap: '%s' <%s> -> '%s' <%s>\n", | |
100 | old_name, old_email, new_name, new_email); | |
101 | } | |
102 | ||
103 | static char *parse_name_and_email(char *buffer, char **name, | |
104 | char **email, int allow_empty_email) | |
105 | { | |
106 | char *left, *right, *nstart, *nend; | |
107 | *name = *email = NULL; | |
108 | ||
109 | if ((left = strchr(buffer, '<')) == NULL) | |
110 | return NULL; | |
111 | if ((right = strchr(left+1, '>')) == NULL) | |
112 | return NULL; | |
113 | if (!allow_empty_email && (left+1 == right)) | |
114 | return NULL; | |
115 | ||
116 | /* remove whitespace from beginning and end of name */ | |
117 | nstart = buffer; | |
118 | while (isspace(*nstart) && nstart < left) | |
119 | ++nstart; | |
120 | nend = left-1; | |
121 | while (isspace(*nend) && nend > nstart) | |
122 | --nend; | |
123 | ||
124 | *name = (nstart < nend ? nstart : NULL); | |
125 | *email = left+1; | |
126 | *(nend+1) = '\0'; | |
127 | *right++ = '\0'; | |
128 | ||
129 | return (*right == '\0' ? NULL : right); | |
130 | } | |
131 | ||
132 | static int read_single_mailmap(struct string_list *map, const char *filename, char **repo_abbrev) | |
133 | { | |
134 | char buffer[1024]; | |
135 | FILE *f = (filename == NULL ? NULL : fopen(filename, "r")); | |
136 | ||
137 | if (f == NULL) | |
138 | return 1; | |
139 | while (fgets(buffer, sizeof(buffer), f) != NULL) { | |
140 | char *name1 = NULL, *email1 = NULL, *name2 = NULL, *email2 = NULL; | |
141 | if (buffer[0] == '#') { | |
142 | static const char abbrev[] = "# repo-abbrev:"; | |
143 | int abblen = sizeof(abbrev) - 1; | |
144 | int len = strlen(buffer); | |
145 | ||
146 | if (!repo_abbrev) | |
147 | continue; | |
148 | ||
149 | if (len && buffer[len - 1] == '\n') | |
150 | buffer[--len] = 0; | |
151 | if (!strncmp(buffer, abbrev, abblen)) { | |
152 | char *cp; | |
153 | ||
154 | if (repo_abbrev) | |
155 | free(*repo_abbrev); | |
156 | *repo_abbrev = xmalloc(len); | |
157 | ||
158 | for (cp = buffer + abblen; isspace(*cp); cp++) | |
159 | ; /* nothing */ | |
160 | strcpy(*repo_abbrev, cp); | |
161 | } | |
162 | continue; | |
163 | } | |
164 | if ((name2 = parse_name_and_email(buffer, &name1, &email1, 0)) != NULL) | |
165 | parse_name_and_email(name2, &name2, &email2, 1); | |
166 | ||
167 | if (email1) | |
168 | add_mapping(map, name1, email1, name2, email2); | |
169 | } | |
170 | fclose(f); | |
171 | return 0; | |
172 | } | |
173 | ||
174 | int read_mailmap(struct string_list *map, char **repo_abbrev) | |
175 | { | |
176 | map->strdup_strings = 1; | |
177 | /* each failure returns 1, so >1 means both calls failed */ | |
178 | return read_single_mailmap(map, ".mailmap", repo_abbrev) + | |
179 | read_single_mailmap(map, git_mailmap_file, repo_abbrev) > 1; | |
180 | } | |
181 | ||
182 | void clear_mailmap(struct string_list *map) | |
183 | { | |
184 | debug_mm("mailmap: clearing %d entries...\n", map->nr); | |
185 | map->strdup_strings = 1; | |
186 | string_list_clear_func(map, free_mailmap_entry); | |
187 | debug_mm("mailmap: cleared\n"); | |
188 | } | |
189 | ||
190 | int map_user(struct string_list *map, | |
191 | char *email, int maxlen_email, char *name, int maxlen_name) | |
192 | { | |
193 | char *end_of_email; | |
194 | struct string_list_item *item; | |
195 | struct mailmap_entry *me; | |
196 | char buf[1024], *mailbuf; | |
197 | int i; | |
198 | ||
199 | /* figure out space requirement for email */ | |
200 | end_of_email = strchr(email, '>'); | |
201 | if (!end_of_email) { | |
202 | /* email passed in might not be wrapped in <>, but end with a \0 */ | |
203 | end_of_email = memchr(email, '\0', maxlen_email); | |
204 | if (!end_of_email) | |
205 | return 0; | |
206 | } | |
207 | if (end_of_email - email + 1 < sizeof(buf)) | |
208 | mailbuf = buf; | |
209 | else | |
210 | mailbuf = xmalloc(end_of_email - email + 1); | |
211 | ||
212 | /* downcase the email address */ | |
213 | for (i = 0; i < end_of_email - email; i++) | |
214 | mailbuf[i] = tolower(email[i]); | |
215 | mailbuf[i] = 0; | |
216 | ||
217 | debug_mm("map_user: map '%s' <%s>\n", name, mailbuf); | |
218 | item = string_list_lookup(map, mailbuf); | |
219 | if (item != NULL) { | |
220 | me = (struct mailmap_entry *)item->util; | |
221 | if (me->namemap.nr) { | |
222 | /* The item has multiple items, so we'll look up on name too */ | |
223 | /* If the name is not found, we choose the simple entry */ | |
224 | struct string_list_item *subitem = string_list_lookup(&me->namemap, name); | |
225 | if (subitem) | |
226 | item = subitem; | |
227 | } | |
228 | } | |
229 | if (mailbuf != buf) | |
230 | free(mailbuf); | |
231 | if (item != NULL) { | |
232 | struct mailmap_info *mi = (struct mailmap_info *)item->util; | |
233 | if (mi->name == NULL && (mi->email == NULL || maxlen_email == 0)) { | |
234 | debug_mm("map_user: -- (no simple mapping)\n"); | |
235 | return 0; | |
236 | } | |
237 | if (maxlen_email && mi->email) | |
238 | strlcpy(email, mi->email, maxlen_email); | |
239 | else | |
240 | *end_of_email = '\0'; | |
241 | if (maxlen_name && mi->name) | |
242 | strlcpy(name, mi->name, maxlen_name); | |
243 | debug_mm("map_user: to '%s' <%s>\n", name, mi->email ? mi->email : ""); | |
244 | return 1; | |
245 | } | |
246 | debug_mm("map_user: --\n"); | |
247 | return 0; | |
248 | } |