handle errors properly

dve

@@ -15,6 +15,13 @@ if [ -f ~/.dverc ]; then
   source ~/.dverc
 fi
 
+function on_finish() {
+	echo "Cleaning up temporary working files"
+	rm -f "${OUTDIR}"/*
+	cd "$CWD"
+	echo "Finished cleaning"
+}
+
 function usage() {
     cat << EOF
 usage: $0 [options] filename
@@ -76,6 +83,9 @@ if [ $# -lt 1 ]; then
     exit 1
 fi
 
+CWD=`pwd`
+trap on_finish EXIT
+
 checkpaths
 
 if ! mkdir -p ${OUTDIR}; then
@@ -89,7 +99,6 @@ if [[ "$1" == *".AVI" || "$1" == *".avi" ]]; then
 else
        $ENC -i "$1" -map 0 -codec copy -f segment -segment_time $LEN -segment_format matroska -v ${VERBOSE} "${OUTDIR}/chunk-%03d.orig"
 fi
-CWD=`pwd`
 cd "$OUTDIR"
 
 echo "Running parallel encoding jobs"
@@ -108,7 +117,3 @@ done
 BASE=`basename "$1"`
 OUTFILE="${CWD}"/"${BASE%.*}${SUFFIX}"
 ${ENC} -y -v ${VERBOSE} -f concat -i concat.txt -f matroska -map 0 -c copy "${OUTFILE}"
-
-echo "Cleaning up temporary working files"
-rm -f "${OUTDIR}"/*
-cd "$CWD"