mailmap: refactor mailmap parsing for non-file sources

The read_single_mailmap function opens a mailmap file and
parses each line. In preparation for having non-file
mailmaps, let's pull out the line-parsing logic into its own
function (read_mailmap_line), and rename the file-parsing
function to match (read_mailmap_file).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/mailmap.c b/mailmap.c
index ea4b471edeb5ca9b29a8138f6f831a5e6a15a9e8..89bc318de4a537e228f3e00a173b46b16b7c4f73 100644 (file)
--- a/mailmap.c
+++ b/mailmap.c
@@ -129,44 +129,50 @@ 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"));
 
        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);
-       }
+       while (fgets(buffer, sizeof(buffer), f) != NULL)
+               read_mailmap_line(map, buffer, repo_abbrev);
        fclose(f);
        return 0;
 }
@@ -175,8 +181,8 @@ 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;
+       return read_mailmap_file(map, ".mailmap", repo_abbrev) +
+              read_mailmap_file(map, git_mailmap_file, repo_abbrev) > 1;
 }
 
 void clear_mailmap(struct string_list *map)