diff options
Diffstat (limited to 'mailmap.c')
| -rw-r--r-- | mailmap.c | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/mailmap.c b/mailmap.c new file mode 100644 index 0000000..f80b701 --- /dev/null +++ b/mailmap.c @@ -0,0 +1,245 @@ +#include "cache.h" +#include "string-list.h" +#include "mailmap.h" + +#define DEBUG_MAILMAP 0 +#if DEBUG_MAILMAP +#define debug_mm(...) fprintf(stderr, __VA_ARGS__) +#else +static inline void debug_mm(const char *format, ...) {} +#endif + +const char *git_mailmap_file; + +struct mailmap_info { + char *name; + char *email; +}; + +struct mailmap_entry { + /* name and email for the simple mail-only case */ + char *name; + char *email; + + /* name and email for the complex mail and name matching case */ + struct string_list namemap; +}; + +static void free_mailmap_info(void *p, const char *s) +{ + struct mailmap_info *mi = (struct mailmap_info *)p; + debug_mm("mailmap: -- complex: '%s' -> '%s' <%s>\n", s, mi->name, mi->email); + free(mi->name); + free(mi->email); +} + +static void free_mailmap_entry(void *p, const char *s) +{ + struct mailmap_entry *me = (struct mailmap_entry *)p; + debug_mm("mailmap: removing entries for <%s>, with %d sub-entries\n", s, me->namemap.nr); + debug_mm("mailmap: - simple: '%s' <%s>\n", me->name, me->email); + free(me->name); + free(me->email); + + me->namemap.strdup_strings = 1; + string_list_clear_func(&me->namemap, free_mailmap_info); +} + +static void add_mapping(struct string_list *map, + char *new_name, char *new_email, char *old_name, char *old_email) +{ + struct mailmap_entry *me; + int index; + char *p; + + if (old_email) + for (p = old_email; *p; p++) + *p = tolower(*p); + if (new_email) + for (p = new_email; *p; p++) + *p = tolower(*p); + + if (old_email == NULL) { + old_email = new_email; + new_email = NULL; + } + + if ((index = string_list_find_insert_index(map, old_email, 1)) < 0) { + /* mailmap entry exists, invert index value */ + index = -1 - index; + } else { + /* create mailmap entry */ + struct string_list_item *item = string_list_insert_at_index(map, index, old_email); + item->util = xmalloc(sizeof(struct mailmap_entry)); + memset(item->util, 0, sizeof(struct mailmap_entry)); + ((struct mailmap_entry *)item->util)->namemap.strdup_strings = 1; + } + me = (struct mailmap_entry *)map->items[index].util; + + if (old_name == NULL) { + debug_mm("mailmap: adding (simple) entry for %s at index %d\n", old_email, index); + /* Replace current name and new email for simple entry */ + free(me->name); + free(me->email); + if (new_name) + me->name = xstrdup(new_name); + if (new_email) + me->email = xstrdup(new_email); + } else { + struct mailmap_info *mi = xmalloc(sizeof(struct mailmap_info)); + debug_mm("mailmap: adding (complex) entry for %s at index %d\n", old_email, index); + if (new_name) + mi->name = xstrdup(new_name); + if (new_email) + mi->email = xstrdup(new_email); + string_list_insert(&me->namemap, old_name)->util = mi; + } + + debug_mm("mailmap: '%s' <%s> -> '%s' <%s>\n", + old_name, old_email, new_name, new_email); +} + +static char *parse_name_and_email(char *buffer, char **name, + char **email, int allow_empty_email) +{ + char *left, *right, *nstart, *nend; + *name = *email = NULL; + + if ((left = strchr(buffer, '<')) == NULL) + return NULL; + if ((right = strchr(left+1, '>')) == NULL) + return NULL; + if (!allow_empty_email && (left+1 == right)) + return NULL; + + /* remove whitespace from beginning and end of name */ + nstart = buffer; + while (isspace(*nstart) && nstart < left) + ++nstart; + nend = left-1; + while (isspace(*nend) && nend > nstart) + --nend; + + *name = (nstart < nend ? nstart : NULL); + *email = left+1; + *(nend+1) = '\0'; + *right++ = '\0'; + + return (*right == '\0' ? NULL : right); +} + +static int read_single_mailmap(struct string_list *map, const char *filename, char **repo_abbrev) +{ + char buffer[1024]; + FILE *f = (filename == NULL ? NULL : fopen(filename, "r")); + + if (f == NULL) + return 1; + while (fgets(buffer, sizeof(buffer), f) != NULL) { + char *name1 = NULL, *email1 = NULL, *name2 = NULL, *email2 = NULL; + if (buffer[0] == '#') { + static const char abbrev[] = "# repo-abbrev:"; + int abblen = sizeof(abbrev) - 1; + int len = strlen(buffer); + + if (!repo_abbrev) + continue; + + if (len && buffer[len - 1] == '\n') + buffer[--len] = 0; + if (!strncmp(buffer, abbrev, abblen)) { + char *cp; + + if (repo_abbrev) + free(*repo_abbrev); + *repo_abbrev = xmalloc(len); + + for (cp = buffer + abblen; isspace(*cp); cp++) + ; /* nothing */ + strcpy(*repo_abbrev, cp); + } + continue; + } + if ((name2 = parse_name_and_email(buffer, &name1, &email1, 0)) != NULL) + parse_name_and_email(name2, &name2, &email2, 1); + + if (email1) + add_mapping(map, name1, email1, name2, email2); + } + fclose(f); + return 0; +} + +int read_mailmap(struct string_list *map, char **repo_abbrev) +{ + map->strdup_strings = 1; + /* each failure returns 1, so >1 means both calls failed */ + return read_single_mailmap(map, ".mailmap", repo_abbrev) + + read_single_mailmap(map, git_mailmap_file, repo_abbrev) > 1; +} + +void clear_mailmap(struct string_list *map) +{ + debug_mm("mailmap: clearing %d entries...\n", map->nr); + map->strdup_strings = 1; + string_list_clear_func(map, free_mailmap_entry); + debug_mm("mailmap: cleared\n"); +} + +int map_user(struct string_list *map, + char *email, int maxlen_email, char *name, int maxlen_name) +{ + char *p; + struct string_list_item *item; + struct mailmap_entry *me; + char buf[1024], *mailbuf; + int i; + + /* figure out space requirement for email */ + p = strchr(email, '>'); + if (!p) { + /* email passed in might not be wrapped in <>, but end with a \0 */ + p = memchr(email, '\0', maxlen_email); + if (!p) + return 0; + } + if (p - email + 1 < sizeof(buf)) + mailbuf = buf; + else + mailbuf = xmalloc(p - email + 1); + + /* downcase the email address */ + for (i = 0; i < p - email; i++) + mailbuf[i] = tolower(email[i]); + mailbuf[i] = 0; + + debug_mm("map_user: map '%s' <%s>\n", name, mailbuf); + item = string_list_lookup(map, mailbuf); + if (item != NULL) { + me = (struct mailmap_entry *)item->util; + if (me->namemap.nr) { + /* The item has multiple items, so we'll look up on name too */ + /* If the name is not found, we choose the simple entry */ + struct string_list_item *subitem = string_list_lookup(&me->namemap, name); + if (subitem) + item = subitem; + } + } + if (mailbuf != buf) + free(mailbuf); + if (item != NULL) { + struct mailmap_info *mi = (struct mailmap_info *)item->util; + if (mi->name == NULL && (mi->email == NULL || maxlen_email == 0)) { + debug_mm("map_user: -- (no simple mapping)\n"); + return 0; + } + if (maxlen_email && mi->email) + strlcpy(email, mi->email, maxlen_email); + if (maxlen_name && mi->name) + strlcpy(name, mi->name, maxlen_name); + debug_mm("map_user: to '%s' <%s>\n", name, mi->email ? mi->email : ""); + return 1; + } + debug_mm("map_user: --\n"); + return 0; +} |