Apply mailmap in git-blame output.

This makes git-blame to use the same mailmap used by
git-shortlog.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/builtin-blame.c b/builtin-blame.c
index de80311036c1c63f3b7cf268d82b705520dde417..682edba9e570a1f65298b28681f39aa575e14ee7 100644 (file)
--- a/builtin-blame.c
+++ b/builtin-blame.c
@@ -16,14 +16,17 @@
 #include "quote.h"
 #include "xdiff-interface.h"
 #include "cache-tree.h"
+#include "path-list.h"
+#include "mailmap.h"
 
 static char blame_usage[] =
-"git-blame [-c] [-b] [-l] [--root] [-t] [-f] [-n] [-s] [-p] [-L n,m] [-S <revs-file>] [-M] [-C] [-C] [--contents <filename>] [--incremental] [commit] [--] file\n"
+"git-blame [-c] [-b] [-l] [--root] [-x] [-t] [-f] [-n] [-s] [-p] [-L n,m] [-S <revs-file>] [-M] [-C] [-C] [--contents <filename>] [--incremental] [commit] [--] file\n"
 "  -c                  Use the same output mode as git-annotate (Default: off)\n"
 "  -b                  Show blank SHA-1 for boundary commits (Default: off)\n"
 "  -l                  Show long commit SHA1 (Default: off)\n"
 "  --root              Do not treat root commits as boundaries (Default: off)\n"
 "  -t                  Show raw timestamp (Default: off)\n"
+"  -x                  Do not use .mailmap file\n"
 "  -f, --show-name     Show original filename (Default: auto)\n"
 "  -n, --show-number   Show original linenumber (Default: off)\n"
 "  -s                  Suppress author name and timestamp (Default: off)\n"
@@ -43,6 +46,8 @@ static int show_root;
 static int blank_boundary;
 static int incremental;
 static int cmd_is_annotate;
+static int no_mailmap;
+static struct path_list mailmap;
 
 #ifndef DEBUG
 #define DEBUG 0
@@ -1265,8 +1270,8 @@ static void get_ac_line(const char *inbuf, const char *what,
                        int bufsz, char *person, const char **mail,
                        unsigned long *time, const char **tz)
 {
-       int len;
-       char *tmp, *endp;
+       int len, tzlen, maillen;
+       char *tmp, *endp, *timepos;
 
        tmp = strstr(inbuf, what);
        if (!tmp)
@@ -1292,17 +1297,42 @@ static void get_ac_line(const char *inbuf, const char *what,
        while (*tmp != ' ')
                tmp--;
        *tz = tmp+1;
+       tzlen = (person+len)-(tmp+1);
 
        *tmp = 0;
        while (*tmp != ' ')
                tmp--;
        *time = strtoul(tmp, NULL, 10);
+       timepos = tmp;
 
        *tmp = 0;
        while (*tmp != ' ')
                tmp--;
        *mail = tmp + 1;
        *tmp = 0;
+       maillen = timepos - tmp;
+
+       if (!mailmap.nr)
+               return;
+
+       /*
+        * mailmap expansion may make the name longer.
+        * make room by pushing stuff down.
+        */
+       tmp = person + bufsz - (tzlen + 1);
+       memmove(tmp, *tz, tzlen);
+       tmp[tzlen] = 0;
+       *tz = tmp;
+
+       tmp = tmp - (maillen + 1);
+       memmove(tmp, *mail, maillen);
+       tmp[maillen] = 0;
+       *mail = tmp;
+
+       /*
+        * Now, convert e-mail using mailmap
+        */
+       map_email(&mailmap, tmp + 1, person, tmp-person-1);
 }
 
 static void get_commit_info(struct commit *commit,
@@ -2143,6 +2173,9 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
                else if (!strcmp("-p", arg) ||
                         !strcmp("--porcelain", arg))
                        output_option |= OUTPUT_PORCELAIN;
+               else if (!strcmp("-x", arg) ||
+                        !strcmp("--no-mailmap", arg))
+                       no_mailmap = 1;
                else if (!strcmp("--", arg)) {
                        seen_dashdash = 1;
                        i++;
@@ -2342,6 +2375,9 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
                die("reading graft file %s failed: %s",
                    revs_file, strerror(errno));
 
+       if (!no_mailmap && !access(".mailmap", R_OK))
+               read_mailmap(&mailmap, ".mailmap", NULL);
+
        assign_blame(&sb, &revs, opt);
 
        if (incremental)