add main() function, find src only once

1 files changed, 15 insertions, 8 deletions

diff --git a/mcp.sh b/mcp.sh
index 507587d..7653a23 100755
--- a/mcp.sh
+++ b/mcp.sh
@@ -37,14 +37,21 @@ fixstamp-dirs() {
 }
 export -f fixstamp-dirs
 
+main() {
+	set -euo pipefail
 
-set -euo pipefail
+	umask 0077
+	mkdir -p /tmp/dest
+	exec {DESTFD}</tmp/dest
 
-umask 0077
-mkdir -p /tmp/dest
-exec {DESTFD}</tmp/dest
+	local FINDSRC=$(mktemp /tmp/mcp-find-src.XXXXXXX)
+	trap "rm -f $FINDSRC" EXIT
 
-cd /tmp/tree
-find . -type d -print0 | xargs -0 bash -c 'mk-dirs "$@"' -- /proc/$$/fd/$DESTFD
-find . -type d -print0 | xargs -0 -P 8 -n 10 bash -c 'cp-dir "$@"' -- /proc/$$/fd/$DESTFD
-find . -type d -print0 | xargs -0 -P 8 -n 10 bash -c 'fixstamp-dirs "$@"' -- /proc/$$/fd/$DESTFD
+	cd /tmp/tree
+	find . -type d -print0 > $FINDSRC
+	xargs -0 bash -c 'mk-dirs "$@"' -- /proc/$$/fd/$DESTFD < $FINDSRC
+	xargs -0 -P 8 -n 10 bash -c 'cp-dir "$@"' -- /proc/$$/fd/$DESTFD < $FINDSRC
+	xargs -0 -P 8 -n 10 bash -c 'fixstamp-dirs "$@"' -- /proc/$$/fd/$DESTFD < $FINDSRC
+}
+
+main