Add mailmap.file as configurational option for mailmap location

This allows us to augment the repo mailmap file, and to use
mailmap files elsewhere than the repository root. Meaning
that the entries in mailmap.file will override the entries
in "./.mailmap", should they match.

Signed-off-by: Marius Storm-Olsen <marius@trolltech.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 10 insertions, 2 deletions

diff --git a/mailmap.c b/mailmap.c
index 88fc6f394..d006dad67 100644
--- a/mailmap.c
+++ b/mailmap.c
@@ -2,10 +2,11 @@
 #include "string-list.h"
 #include "mailmap.h"
 
-int read_mailmap(struct string_list *map, const char *filename, char **repo_abbrev)
+const char *git_mailmap_file;
+static int read_single_mailmap(struct string_list *map, const char *filename, char **repo_abbrev)
 {
 	char buffer[1024];
-	FILE *f = fopen(filename, "r");
+	FILE *f = (filename == NULL ? NULL : fopen(filename, "r"));
 
 	if (f == NULL)
 		return 1;
@@ -60,6 +61,13 @@ int read_mailmap(struct string_list *map, const char *filename, char **repo_abbr
 	return 0;
 }
 
+int read_mailmap(struct string_list *map, char **repo_abbrev)
+{
+	/* 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;
+}
+
 int map_email(struct string_list *map, const char *email, char *name, int maxlen)
 {
 	char *p;