Add "--pretty=full" format that also shows committer.

Also move the common implementation of parsing the --pretty argument
format into commit.c rather than having duplicates in diff-tree.c and
rev-list.c.

commit.c

@@ -5,6 +5,21 @@
 
 const char *commit_type = "commit";
 
+enum cmit_fmt get_commit_format(const char *arg)
+{
+	if (!*arg)
+		return CMIT_FMT_DEFAULT;
+	if (!strcmp(arg, "=raw"))
+		return CMIT_FMT_RAW;
+	if (!strcmp(arg, "=medium"))
+		return CMIT_FMT_MEDIUM;
+	if (!strcmp(arg, "=short"))
+		return CMIT_FMT_SHORT;
+	if (!strcmp(arg, "=full"))
+		return CMIT_FMT_FULL;
+	die("invalid --pretty format");
+}
+
 static struct commit *check_commit(struct object *obj, const unsigned char *sha1)
 {
 	if (obj->type != commit_type) {
@@ -196,14 +211,13 @@ static int get_one_line(const char *msg, unsigned long len)
 	return ret;
 }
 
-static int add_author_info(enum cmit_fmt fmt, char *buf, const char *line, int len)
+static int add_user_info(const char *what, enum cmit_fmt fmt, char *buf, const char *line)
 {
 	char *date;
 	unsigned int namelen;
 	unsigned long time;
 	int tz, ret;
 
-	line += strlen("author ");
 	date = strchr(line, '>');
 	if (!date)
 		return 0;
@@ -211,7 +225,7 @@ static int add_author_info(enum cmit_fmt fmt, char *buf, const char *line, int l
 	time = strtoul(date, &date, 10);
 	tz = strtol(date, NULL, 10);
 
-	ret = sprintf(buf, "Author: %.*s\n", namelen, line);
+	ret = sprintf(buf, "%s: %.*s\n", what, namelen, line);
 	if (fmt == CMIT_FMT_MEDIUM)
 		ret += sprintf(buf + ret, "Date:   %s\n", show_date(time, tz));
 	return ret;
@@ -284,7 +298,11 @@ unsigned long pretty_print_commit(enum cmit_fmt fmt, const char *msg, unsigned l
 				offset += add_parent_info(fmt, buf + offset, line, ++parents);
 			}
 			if (!memcmp(line, "author ", 7))
-				offset += add_author_info(fmt, buf + offset, line, linelen);
+				offset += add_user_info("Author", fmt, buf + offset, line + 7);
+			if (fmt == CMIT_FMT_FULL) {
+				if (!memcmp(line, "committer ", 10))
+					offset += add_user_info("Commit", fmt, buf + offset, line + 10);
+			}
 			continue;
 		}
 

commit.h

@@ -37,9 +37,11 @@ enum cmit_fmt {
 	CMIT_FMT_RAW,
 	CMIT_FMT_MEDIUM,
 	CMIT_FMT_DEFAULT = CMIT_FMT_MEDIUM,
-	CMIT_FMT_SHORT
+	CMIT_FMT_SHORT,
+	CMIT_FMT_FULL,
 };
 
+extern enum cmit_fmt get_commit_format(const char *arg);
 extern unsigned long pretty_print_commit(enum cmit_fmt fmt, const char *msg, unsigned long len, char *buf, unsigned long space);
 
 void insert_by_date(struct commit_list **list, struct commit *item);

diff-tree.c

@@ -397,19 +397,6 @@ static int diff_tree_stdin(char *line)
 static char *diff_tree_usage =
 "git-diff-tree [-p] [-r] [-z] [--stdin] [-m] [-s] [-v] [--pretty] [-t] [-R] [-B] [-M] [-C] [--find-copies-header] [-O<orderfile>] [-S<string>] [--pickaxe-all] <tree-ish> <tree-ish>";
 
-static enum cmit_fmt get_commit_format(const char *arg)
-{
-	if (!*arg)
-		return CMIT_FMT_DEFAULT;
-	if (!strcmp(arg, "=raw"))
-		return CMIT_FMT_RAW;
-	if (!strcmp(arg, "=medium"))
-		return CMIT_FMT_MEDIUM;
-	if (!strcmp(arg, "=short"))
-		return CMIT_FMT_SHORT;
-	usage(diff_tree_usage);
-}
-
 int main(int argc, const char **argv)
 {
 	int nr_sha1;

rev-list.c

@@ -307,20 +307,6 @@ struct commit_list *limit_list(struct commit_list *list)
 	return newlist;
 }
 
-static enum cmit_fmt get_commit_format(const char *arg)
-{
-	if (!*arg)
-		return CMIT_FMT_DEFAULT;
-	if (!strcmp(arg, "=raw"))
-		return CMIT_FMT_RAW;
-	if (!strcmp(arg, "=medium"))
-		return CMIT_FMT_MEDIUM;
-	if (!strcmp(arg, "=short"))
-		return CMIT_FMT_SHORT;
-	usage(rev_list_usage);	
-}			
-
-
 int main(int argc, char **argv)
 {
 	struct commit_list *list = NULL;