File msgheadermerge-parse of Package translation-update-upstream

#!/bin/bash
# helper script for msgheadermerge
PO_HEADER_DIR=$1
if mkdir 2>/dev/null $PO_HEADER_DIR.merge-dir ; then
    while read ; do
	TAG=${REPLY%%:*}
	if test "$TAG" = "$REPLY" -o -z "$TAG" ; then
	    echo "ERROR: Malformed header line $PO_HEADER_DIR/$TAG. Ignoring." >&2
	else
	    TAG=${TAG//\//__SLASH__} # safety check
	    VALUE=${REPLY#*:}
	    VALUE=${VALUE# }
	    echo >"$PO_HEADER_DIR.merge-dir/$TAG" "$VALUE"
	    echo >>$PO_HEADER_DIR.order "$TAG"
	fi
    done
    touch -d "$(<$PO_HEADER_DIR.merge-dir/POT-Creation-Date)" $PO_HEADER_DIR.merge-dir/POT-Creation-Date
    touch -d "$(<$PO_HEADER_DIR.merge-dir/PO-Revision-Date)" $PO_HEADER_DIR.merge-dir/PO-Revision-Date
else
    exit 1
fi