archive_patch.sh: some improvements

Signed-off-by: Colin McCabe <cmccabe@alumni.cmu.edu>

diff --git a/archive_patch.sh b/archive_patch.sh
index 8c7a236..082f698 100755 (executable)
--- a/archive_patch.sh
+++ b/archive_patch.sh
@@ -1,5 +1,59 @@
 #!/bin/sh
 
-new_file_name=`date +'%Y-%m-%d'`_`basename $1`
+#
+# archive_patch.sh
+#
+# Archives old files
+#
+# copyright Colin Patrick McCabe, 2011
+#
 
-mv -i "${1}" "${new_file_name}"
+die() {
+    echo $@
+    exit 1
+}
+
+usage() {
+    echo
+    echo "$0: archives old files"
+    echo
+    echo "-c               copy the file rather than moving it"
+    echo "-d <dir>         directory where the file should end up (default: .)"
+    echo "-h               This help message"
+    echo
+}
+
+copy=0
+destdir=.
+while getopts  "cd:h" flag
+do
+    case $flag in
+    c)  copy=1;;
+
+    d)  destdir=$OPTARG;;
+
+    h)  usage
+        exit 1
+        ;;
+
+    *) usage
+        exit 1;;
+    esac
+done
+shift $((OPTIND-1))
+
+if [ $copy -eq 1 ]; then
+    cmd="cp -f"
+else
+    cmd="mv -f"
+fi
+
+[ -d "$destdir" ] || die "destdir '$destdir' is not a directory"
+
+for file in "$@"; do
+    [ -e "$file" ] || die "'$file' does not exist"
+done
+for file in "$@"; do
+    new_file_name=$destdir/`date +'%Y-%m-%d'`_`basename $file`
+    $cmd "${file}" "${new_file_name}" || die "failed on $file"
+done