Added command line parameters to set-jpeg-comment.sh

diff --git a/set-jpeg-comment.sh b/set-jpeg-comment.sh
index 074bc68163078ead219f00d1ac2799000107b004..4c2b68cf5076a7d985f8c1ebf0528696e228922b 100755 (executable)
--- a/set-jpeg-comment.sh
+++ b/set-jpeg-comment.sh
@@ -4,14 +4,83 @@
 set -e
 set -u
 
+VERSION="0.2.0"
+MY_BASE=$(basename "${0}")
 
+#--------------------------------------------
 usage() {
     cat <<EOF
-Usage: ${0} <IMAGE_FILE> [COMMENT]
+Usage: ${0} [-d] [-v] [-t] <IMAGE_FILE> [COMMENT]
+       ${0} {-h|--help}
+       ${0} {-V|--version}
 
 EOF
 }
 
+IMAGE_FILE=
+
+#--------------------------------------------
+print_file() {
+    if [[ -n "${IMAGE_FILE}" ]] ; then
+        printf "%s: not applicable.\n\n" "${IMAGE_FILE}" >&2
+    fi
+}
+
+#--------------------------------------------
+debug="n"
+verbose="n"
+simulate="n"
+
+set +e
+TEMP=$( getopt -o dvthV --long debug,verbose,simulate,test,help,version -n "${MY_BASE}" -- "$@" )
+if [[ $? != 0 ]] ; then
+    echo "" >&2
+    usage >&2
+    exit 1
+fi
+set -e
+
+# Note the quotes around `$TEMP': they are essential!
+eval set -- "$TEMP"
+
+while true ; do
+    case "$1" in
+        -d|--debug)
+            debug="y"
+            shift
+            ;;
+        -v|--verbose)
+            verbose="y"
+            shift
+            ;;
+        -t|--test|--simulate)
+            simulate="y"
+            shift
+            ;;
+        -h|--help)
+            usage
+            exit 0
+            ;;
+        -V|--version)
+            echo "${MY_BASE} version: ${VERSION}"
+            exit 0
+            ;;
+        --) shift
+            break
+            ;;
+        *)  echo "Unknown parameter '${1}'" >&2
+            usage >&2
+            exit 1
+            ;;
+    esac
+done
+
+if [[ "${debug}" = "y" ]] ; then
+    set -x
+fi
+
+
+#--------------------------------------------
 if [[ "$#" -lt 1 ]] ; then
     echo -e "No image file given.\n" >&2
     usage >&2
@@ -25,7 +94,7 @@ if type -t rdjpgcom >/dev/null ; then
     :
 else
     cat >&2 <<-EOF
-       Executable rdjpgcom  not found.
+       Executable rdjpgcom not found.
 
        Please install package libjpeg-progs (Debian/Ubuntu) or media-libs/libjpeg-turbo (Gentoo).
 
@@ -39,5 +108,9 @@ if [[ ! -f "${IMAGE_FILE}" ]] ; then
     exit 1
 fi
 
+trap "print_file; exit 1" INT TERM EXIT
+CUR_COMMENT=$( rdjpgcom "${IMAGE_FILE}" )
+trap - INT TERM EXIT
+
 
 # vim: et ts=4 softtabstop