[PATCH 1/2] git-blame: refactor code to emit "porcelain format" output

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Both the --porcelain and --incremental format shared the same output
format but implemented with two identical codepaths.  This merges them
into one shared function.

Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
 * This is just a preparatory clean-up patch (on jc/blame topic)

 builtin-blame.c |   65 ++++++++++++++++++++++++++----------------------------
 1 files changed, 31 insertions(+), 34 deletions(-)

diff --git a/builtin-blame.c b/builtin-blame.c
index 5c7546d..4b9c601 100644
--- a/builtin-blame.c
+++ b/builtin-blame.c
@@ -1479,6 +1479,34 @@ static void write_filename_info(const char *path)
 }
 
 /*
+ * Porcelain/Incremental format wants to show a lot of details per
+ * commit.  Instead of repeating this every line, emit it only once,
+ * the first time each commit appears in the output.
+ */
+static int emit_one_suspect_detail(struct origin *suspect)
+{
+	struct commit_info ci;
+
+	if (suspect->commit->object.flags & METAINFO_SHOWN)
+		return 0;
+
+	suspect->commit->object.flags |= METAINFO_SHOWN;
+	get_commit_info(suspect->commit, &ci, 1);
+	printf("author %s\n", ci.author);
+	printf("author-mail %s\n", ci.author_mail);
+	printf("author-time %lu\n", ci.author_time);
+	printf("author-tz %s\n", ci.author_tz);
+	printf("committer %s\n", ci.committer);
+	printf("committer-mail %s\n", ci.committer_mail);
+	printf("committer-time %lu\n", ci.committer_time);
+	printf("committer-tz %s\n", ci.committer_tz);
+	printf("summary %s\n", ci.summary);
+	if (suspect->commit->object.flags & UNINTERESTING)
+		printf("boundary\n");
+	return 1;
+}
+
+/*
  * The blame_entry is found to be guilty for the range.  Mark it
  * as such, and show it in incremental output.
  */
@@ -1493,22 +1521,7 @@ static void found_guilty_entry(struct blame_entry *ent)
 		printf("%s %d %d %d\n",
 		       sha1_to_hex(suspect->commit->object.sha1),
 		       ent->s_lno + 1, ent->lno + 1, ent->num_lines);
-		if (!(suspect->commit->object.flags & METAINFO_SHOWN)) {
-			struct commit_info ci;
-			suspect->commit->object.flags |= METAINFO_SHOWN;
-			get_commit_info(suspect->commit, &ci, 1);
-			printf("author %s\n", ci.author);
-			printf("author-mail %s\n", ci.author_mail);
-			printf("author-time %lu\n", ci.author_time);
-			printf("author-tz %s\n", ci.author_tz);
-			printf("committer %s\n", ci.committer);
-			printf("committer-mail %s\n", ci.committer_mail);
-			printf("committer-time %lu\n", ci.committer_time);
-			printf("committer-tz %s\n", ci.committer_tz);
-			printf("summary %s\n", ci.summary);
-			if (suspect->commit->object.flags & UNINTERESTING)
-				printf("boundary\n");
-		}
+		emit_one_suspect_detail(suspect);
 		write_filename_info(suspect->path);
 		maybe_flush_or_die(stdout, "stdout");
 	}
@@ -1615,24 +1628,8 @@ static void emit_porcelain(struct scoreboard *sb, struct blame_entry *ent)
 	       ent->s_lno + 1,
 	       ent->lno + 1,
 	       ent->num_lines);
-	if (!(suspect->commit->object.flags & METAINFO_SHOWN)) {
-		struct commit_info ci;
-		suspect->commit->object.flags |= METAINFO_SHOWN;
-		get_commit_info(suspect->commit, &ci, 1);
-		printf("author %s\n", ci.author);
-		printf("author-mail %s\n", ci.author_mail);
-		printf("author-time %lu\n", ci.author_time);
-		printf("author-tz %s\n", ci.author_tz);
-		printf("committer %s\n", ci.committer);
-		printf("committer-mail %s\n", ci.committer_mail);
-		printf("committer-time %lu\n", ci.committer_time);
-		printf("committer-tz %s\n", ci.committer_tz);
-		write_filename_info(suspect->path);
-		printf("summary %s\n", ci.summary);
-		if (suspect->commit->object.flags & UNINTERESTING)
-			printf("boundary\n");
-	}
-	else if (suspect->commit->object.flags & MORE_THAN_ONE_PATH)
+	if (emit_one_suspect_detail(suspect) ||
+	    (suspect->commit->object.flags & MORE_THAN_ONE_PATH))
 		write_filename_info(suspect->path);
 
 	cp = nth_line(sb, ent->lno);
-- 
1.5.6.rc1.12.g7f718

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