| #include "cache.h" |
| #include "string-list.h" |
| #include "mailmap.h" |
| |
| #define DEBUG_MAILMAP 0 |
| #if DEBUG_MAILMAP |
| #define debug_mm(...) fprintf(stderr, __VA_ARGS__) |
| #define debug_str(X) ((X) ? (X) : "(none)") |
| #else |
| static inline void debug_mm(const char *format, ...) {} |
| static inline const char *debug_str(const char *s) { return s; } |
| #endif |
| |
| const char *git_mailmap_file; |
| const char *git_mailmap_blob; |
| |
| 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, debug_str(mi->name), debug_str(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", |
| debug_str(me->name), debug_str(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; |
| |
| 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; |
| me = (struct mailmap_entry *)map->items[index].util; |
| } else { |
| /* create mailmap entry */ |
| struct string_list_item *item; |
| |
| item = string_list_insert_at_index(map, index, old_email); |
| me = xcalloc(1, sizeof(struct mailmap_entry)); |
| me->namemap.strdup_strings = 1; |
| me->namemap.cmp = strcasecmp; |
| item->util = me; |
| } |
| |
| 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 */ |
| if (new_name) { |
| free(me->name); |
| me->name = xstrdup(new_name); |
| } |
| if (new_email) { |
| free(me->email); |
| me->email = xstrdup(new_email); |
| } |
| } else { |
| struct mailmap_info *mi = xcalloc(1, 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", |
| debug_str(old_name), old_email, |
| debug_str(new_name), debug_str(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 (nend > nstart && isspace(*nend)) |
| --nend; |
| |
| *name = (nstart <= nend ? nstart : NULL); |
| *email = left+1; |
| *(nend+1) = '\0'; |
| *right++ = '\0'; |
| |
| return (*right == '\0' ? NULL : right); |
| } |
| |
| static void read_mailmap_line(struct string_list *map, char *buffer, |
| char **repo_abbrev) |
| { |
| 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) |
| return; |
| |
| 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); |
| } |
| return; |
| } |
| 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); |
| } |
| |
| static int read_mailmap_file(struct string_list *map, const char *filename, |
| char **repo_abbrev) |
| { |
| char buffer[1024]; |
| FILE *f; |
| |
| if (!filename) |
| return 0; |
| |
| f = fopen(filename, "r"); |
| if (!f) { |
| if (errno == ENOENT) |
| return 0; |
| return error("unable to open mailmap at %s: %s", |
| filename, strerror(errno)); |
| } |
| |
| while (fgets(buffer, sizeof(buffer), f) != NULL) |
| read_mailmap_line(map, buffer, repo_abbrev); |
| fclose(f); |
| return 0; |
| } |
| |
| static void read_mailmap_buf(struct string_list *map, |
| const char *buf, unsigned long len, |
| char **repo_abbrev) |
| { |
| while (len) { |
| const char *end = strchrnul(buf, '\n'); |
| unsigned long linelen = end - buf + 1; |
| char *line = xmemdupz(buf, linelen); |
| |
| read_mailmap_line(map, line, repo_abbrev); |
| |
| free(line); |
| buf += linelen; |
| len -= linelen; |
| } |
| } |
| |
| static int read_mailmap_blob(struct string_list *map, |
| const char *name, |
| char **repo_abbrev) |
| { |
| unsigned char sha1[20]; |
| char *buf; |
| unsigned long size; |
| enum object_type type; |
| |
| if (!name) |
| return 0; |
| if (get_sha1(name, sha1) < 0) |
| return 0; |
| |
| buf = read_sha1_file(sha1, &type, &size); |
| if (!buf) |
| return error("unable to read mailmap object at %s", name); |
| if (type != OBJ_BLOB) |
| return error("mailmap is not a blob: %s", name); |
| |
| read_mailmap_buf(map, buf, size, repo_abbrev); |
| |
| free(buf); |
| return 0; |
| } |
| |
| int read_mailmap(struct string_list *map, char **repo_abbrev) |
| { |
| int err = 0; |
| |
| map->strdup_strings = 1; |
| map->cmp = strcasecmp; |
| |
| if (!git_mailmap_blob && is_bare_repository()) |
| git_mailmap_blob = "HEAD:.mailmap"; |
| |
| err |= read_mailmap_file(map, ".mailmap", repo_abbrev); |
| err |= read_mailmap_blob(map, git_mailmap_blob, repo_abbrev); |
| err |= read_mailmap_file(map, git_mailmap_file, repo_abbrev); |
| return err; |
| } |
| |
| 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"); |
| } |
| |
| /* |
| * Look for an entry in map that match string[0:len]; string[len] |
| * does not have to be NUL (but it could be). |
| */ |
| static struct string_list_item *lookup_prefix(struct string_list *map, |
| const char *string, size_t len) |
| { |
| int i = string_list_find_insert_index(map, string, 1); |
| if (i < 0) { |
| /* exact match */ |
| i = -1 - i; |
| if (!string[len]) |
| return &map->items[i]; |
| /* |
| * that map entry matches exactly to the string, including |
| * the cruft at the end beyond "len". That is not a match |
| * with string[0:len] that we are looking for. |
| */ |
| } else if (!string[len]) { |
| /* |
| * asked with the whole string, and got nothing. No |
| * matching entry can exist in the map. |
| */ |
| return NULL; |
| } |
| |
| /* |
| * i is at the exact match to an overlong key, or location the |
| * overlong key would be inserted, which must come after the |
| * real location of the key if one exists. |
| */ |
| while (0 <= --i && i < map->nr) { |
| int cmp = strncasecmp(map->items[i].string, string, len); |
| if (cmp < 0) |
| /* |
| * "i" points at a key definitely below the prefix; |
| * the map does not have string[0:len] in it. |
| */ |
| break; |
| else if (!cmp && !map->items[i].string[len]) |
| /* found it */ |
| return &map->items[i]; |
| /* |
| * otherwise, the string at "i" may be string[0:len] |
| * followed by a string that sorts later than string[len:]; |
| * keep trying. |
| */ |
| } |
| return NULL; |
| } |
| |
| int map_user(struct string_list *map, |
| const char **email, size_t *emaillen, |
| const char **name, size_t *namelen) |
| { |
| struct string_list_item *item; |
| struct mailmap_entry *me; |
| |
| debug_mm("map_user: map '%.*s' <%.*s>\n", |
| (int)*namelen, debug_str(*name), |
| (int)*emaillen, debug_str(*email)); |
| |
| item = lookup_prefix(map, *email, *emaillen); |
| 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; |
| subitem = lookup_prefix(&me->namemap, *name, *namelen); |
| if (subitem) |
| item = subitem; |
| } |
| } |
| if (item != NULL) { |
| struct mailmap_info *mi = (struct mailmap_info *)item->util; |
| if (mi->name == NULL && mi->email == NULL) { |
| debug_mm("map_user: -- (no simple mapping)\n"); |
| return 0; |
| } |
| if (mi->email) { |
| *email = mi->email; |
| *emaillen = strlen(*email); |
| } |
| if (mi->name) { |
| *name = mi->name; |
| *namelen = strlen(*name); |
| } |
| debug_mm("map_user: to '%.*s' <%.*s>\n", |
| (int)*namelen, debug_str(*name), |
| (int)*emaillen, debug_str(*email)); |
| return 1; |
| } |
| debug_mm("map_user: --\n"); |
| return 0; |
| } |