Have everything use a main() function, where it isn't too tricky to convert

"Ignore space change" is essential to making sense of this patch.

1 files changed, 27 insertions, 23 deletions

diff --git a/src/repo-diff b/src/repo-diff
index 10b617c..ab7aaed 100755
--- a/src/repo-diff
+++ b/src/repo-diff
@@ -30,11 +30,6 @@ usage() {
 	flag 'parabola' 'expands to Parabola GNU/Linux-libre repo url'
 }
 
-if test $# -eq 0; then
-	usage
-	exit 0
-fi
-
 b() { bsdtar ztf "$1" | cut -d "/" -f1 | sort -u ; }
 n() { echo "$1".db | tr "/" "-"; }
 
@@ -49,28 +44,37 @@ g() {
 	                -e "s,^arch\(linux\)\?/,http://mirrors.kernel.org/archlinux/,"
 }
 
-mkdir ${0##*/}.$$
-pushd ${0##*/}.$$ >/dev/null
+main() {
+	if test $# -eq 0; then
+		usage
+		exit 0
+	fi
+
+	mkdir ${0##*/}.$$
+	pushd ${0##*/}.$$ >/dev/null
 
-d=""
-for i in $1 $2; do
-	n=$(n "$i")
+	d=""
+	for i in $1 $2; do
+		n=$(n "$i")
 
-	test -z "$n" && exit 1
+		test -z "$n" && exit 1
 
-	wget -O "$n" -nv $(g "$i")
-	b "$n" >${n}.orig
+		wget -O "$n" -nv $(g "$i")
+		b "$n" >${n}.orig
 
-	d+=" ${n}.orig"
-done
+		d+=" ${n}.orig"
+	done
 
-{
-	printf "$(gettext "Difference between %s and %s")\n---\n" $1 $2
-	which diffstat &>/dev/null && diff -auN "${d[@]}" | diffstat
-	diff -auN "${d[@]}"
-} >../${n}.diff
+	{
+		printf "$(gettext "Difference between %s and %s")\n---\n" $1 $2
+		which diffstat &>/dev/null && diff -auN "${d[@]}" | diffstat
+		diff -auN "${d[@]}"
+	} >../${n}.diff
 
-popd >/dev/null
-rm -r ${0##*/}.$$
+	popd >/dev/null
+	rm -r ${0##*/}.$$
+
+	print "Difference save on %s" "${n}.diff"
+}
 
-print "Difference save on %s" "${n}.diff"
+main "$@"