diff options
Diffstat (limited to 'mailmap.c')
| -rw-r--r-- | mailmap.c | 303 |
1 files changed, 209 insertions, 94 deletions
@@ -5,11 +5,14 @@ #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; @@ -28,7 +31,8 @@ struct mailmap_entry { 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); + debug_mm("mailmap: -- complex: '%s' -> '%s' <%s>\n", + s, debug_str(mi->name), debug_str(mi->email)); free(mi->name); free(mi->email); } @@ -36,8 +40,11 @@ static void free_mailmap_info(void *p, const char *s) 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); + 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); @@ -46,18 +53,11 @@ static void free_mailmap_entry(void *p, const char *s) } static void add_mapping(struct string_list *map, - char *new_name, char *new_email, char *old_name, char *old_email) + 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; @@ -67,16 +67,21 @@ static void add_mapping(struct string_list *map, 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 = string_list_insert_at_index(map, index, old_email); - item->util = xcalloc(1, sizeof(struct mailmap_entry)); - ((struct mailmap_entry *)item->util)->namemap.strdup_strings = 1; + 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; } - 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); + 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); @@ -88,7 +93,8 @@ static void add_mapping(struct string_list *map, } } 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); + 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) @@ -97,11 +103,12 @@ static void add_mapping(struct string_list *map, } debug_mm("mailmap: '%s' <%s> -> '%s' <%s>\n", - old_name, old_email, new_name, new_email); + 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 **email, int allow_empty_email) { char *left, *right, *nstart, *nend; *name = *email = NULL; @@ -118,10 +125,10 @@ static char *parse_name_and_email(char *buffer, char **name, while (isspace(*nstart) && nstart < left) ++nstart; nend = left-1; - while (isspace(*nend) && nend > nstart) + while (nend > nstart && isspace(*nend)) --nend; - *name = (nstart < nend ? nstart : NULL); + *name = (nstart <= nend ? nstart : NULL); *email = left+1; *(nend+1) = '\0'; *right++ = '\0'; @@ -129,54 +136,120 @@ static char *parse_name_and_email(char *buffer, char **name, return (*right == '\0' ? NULL : right); } -static int read_single_mailmap(struct string_list *map, const char *filename, char **repo_abbrev) +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 = (filename == NULL ? NULL : fopen(filename, "r")); + FILE *f; - 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 (!filename) + return 0; - if (email1) - add_mapping(map, name1, email1, name2, email2); + 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; - /* 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; + 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) @@ -187,58 +260,100 @@ void clear_mailmap(struct string_list *map) 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, - char *email, int maxlen_email, char *name, int maxlen_name) + const char **email, size_t *emaillen, + const char **name, size_t *namelen) { - 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); + + 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 = string_list_lookup(&me->namemap, name); + /* + * 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 (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)) { + if (mi->name == NULL && mi->email == NULL) { 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 : ""); + 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"); |