Finished set-jpeg-comment.sh so far

diff --git a/set-jpeg-comment.sh b/set-jpeg-comment.sh
index cd88587c70a772f55d3a57c2dfb88dee7ae5626d..fec69f35c77fb92542a5ddc4fd4e30a139616c35 100755 (executable)
--- a/set-jpeg-comment.sh
+++ b/set-jpeg-comment.sh
@@ -4,7 +4,7 @@
 set -e
 set -u
 
-VERSION="0.3.0"
+VERSION="0.4.0"
 MY_BASE=$(basename "${0}")
 
 #--------------------------------------------
@@ -120,6 +120,8 @@ if [[ ! -f "${IMAGE_FILE}" ]] ; then
     exit 1
 fi
 
+OLD_PERMS=$(stat -c "%a" "${IMAGE_FILE}")
+
 trap "print_file; exit 1" INT TERM EXIT
 CUR_COMMENT=$( rdjpgcom "${IMAGE_FILE}" )
 trap - INT TERM EXIT
@@ -155,6 +157,89 @@ fi
 
 NEW_COMMENT="$*"
 
+TMP_FILE=
+if [[ "${simulate}" = "n" ]] ; then
+    TMP_FILE=$( mktemp -t image.XXXXXXXXXX.jpg )
+fi
+
+#------------------------------------------------------------------------------
+cleanup() {
+    if [[ -z "${TMP_FILE}" ]] ; then
+        return 0
+    fi
+    if [[ -f "${TMP_FILE}" ]] ; then
+        if "${verbose}" = "y" ]] ; then
+            rm -vf "${TMP_FILE}" || true
+        else
+            rm -f "${TMP_FILE}" || true
+        fi
+    fi
+}
+
+trap "cleanup; exit 8" INT TERM EXIT
+
+if [[ "${replace}" = "y" ]] ; then
+    if [[ "${verbose}" = "y" ]] ; then
+        echo "Replacing comment in '${IMAGE_FILE}' ..."
+    fi
+    if [[ "${simulate}" = "n" ]] ; then
+        wrjpgcom -replace -comment "${NEW_COMMENT}" "${IMAGE_FILE}" > "${TMP_FILE}"
+    fi
+else
+    if [[ "${verbose}" = "y" ]] ; then
+        echo "Adding comment to '${IMAGE_FILE}' ..."
+    fi
+    if [[ "${simulate}" = "n" ]] ; then
+        wrjpgcom -comment "${NEW_COMMENT}" "${IMAGE_FILE}" > "${TMP_FILE}"
+    fi
+fi
+
+if [[ "${verbose}" = "y" ]] ; then
+    echo "Moving generated file ..."
+    if [[ "${simulate}" = "n" ]] ; then
+        mv -v "${TMP_FILE}" "${IMAGE_FILE}"
+    fi
+else
+    if [[ "${simulate}" = "n" ]] ; then
+        mv "${TMP_FILE}" "${IMAGE_FILE}"
+    fi
+fi
+
+if [[ "${verbose}" = "y" ]] ; then
+    echo "Applying old permissions '${OLD_PERMS}' to '${IMAGE_FILE}' ..."
+    if [[ "${simulate}" = "n" ]] ; then
+        chmod -v ${OLD_PERMS} "${IMAGE_FILE}"
+    fi
+else
+    if [[ "${simulate}" = "n" ]] ; then
+        chmod ${OLD_PERMS} "${IMAGE_FILE}"
+    fi
+fi
+
+if [[ "${verbose}" = "y" ]] ; then
+    echo "Adjusting permissions of '${IMAGE_FILE}' ..."
+    if [[ "${simulate}" = "n" ]] ; then
+        chmod -v a-x "${IMAGE_FILE}"
+    fi
+else
+    if [[ "${simulate}" = "n" ]] ; then
+        chmod a-x "${IMAGE_FILE}"
+    fi
+fi
+
+if [[ "${verbose}" = "y" ]] ; then
+    echo "Setting timestamp ..."
+    if [[ "${simulate}" = "n" ]] ; then
+        jhead -ft "${IMAGE_FILE}"
+    fi
+else
+    jhead -ft -q "${IMAGE_FILE}"
+fi
+
+trap - INT TERM EXIT
+cleanup
+
+exit 0
 
 
 # vim: et ts=4 softtabstop