From 0cd29a0371838228e2c942058e8829f5d0d4a077 Mon Sep 17 00:00:00 2001
From: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Date: Wed, 27 May 2009 11:25:19 +0200
Subject: [PATCH] git-am: refactor 'cleaning up and aborting'

Introduce a clean_abort function that echoes an optional error message
to standard error, removes the dotest directory and exits with status 1.

Use it when patch format detection or patch splitting fails early.

Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 git-am.sh | 27 +++++++++++++--------------
 1 file changed, 13 insertions(+), 14 deletions(-)

diff --git a/git-am.sh b/git-am.sh
index 0ff1f577a3..327807ddcb 100755
--- a/git-am.sh
+++ b/git-am.sh
@@ -134,6 +134,12 @@ It does not apply to blobs recorded in its index."
     unset GITHEAD_$his_tree
 }
 
+clean_abort () {
+	test $# = 0 || echo >&2 "$@"
+	rm -fr "$dotest"
+	exit 1
+}
+
 patch_format=
 
 check_patch_format () {
@@ -180,22 +186,19 @@ check_patch_format () {
 			esac
 			;;
 		esac
-	} < "$1"
+	} < "$1" || clean_abort
 }
 
 split_patches () {
 	case "$patch_format" in
 	mbox)
-		git mailsplit -d"$prec" -o"$dotest" -b -- "$@" > "$dotest/last" ||  {
-			rm -fr "$dotest"
-			exit 1
-		}
+		git mailsplit -d"$prec" -o"$dotest" -b -- "$@" > "$dotest/last" ||
+		clean_abort
 		;;
 	stgit-series)
 		if test $# -ne 1
 		then
-			echo "Only one StGIT patch series can be applied at once"
-			exit 1
+			clean_abort "Only one StGIT patch series can be applied at once"
 		fi
 		series_dir=`dirname "$1"`
 		series_file="$1"
@@ -210,7 +213,7 @@ split_patches () {
 			shift
 			# remove the arg coming from the first-line comment
 			shift
-		} < "$series_file"
+		} < "$series_file" || clean_abort
 		# set the patch format appropriately
 		patch_format=stgit
 		# now handle the actual StGIT patches
@@ -239,18 +242,14 @@ split_patches () {
 					print "Subject: ", $_ ;
 					$subject = 1;
 				}
-			' < "$stgit" > "$dotest/$msgnum" || {
-				echo "Failed to import $patch_format patch $stgit"
-				exit 1
-			}
+			' < "$stgit" > "$dotest/$msgnum" || clean_abort
 		done
 		echo "$this" > "$dotest/last"
 		this=
 		msgnum=
 		;;
 	*)
-		echo "Patch format $patch_format is not supported."
-		exit 1
+		clean_abort "Patch format $patch_format is not supported."
 		;;
 	esac
 }
-- 
2.11.4.GIT