pkg.sh: Add option -W to log-install

This is like log-install -W, except that it installs a wrapper
script instead of a link for executables

Signed-off-by: Jan Lindemann <jan@janware.com>

scripts/pkg.sh

@@ -598,6 +598,37 @@ upload_pkg()
 	fi
 }
 
+install_exe_wrapper()
+{
+	local from="`realpath $1`"
+	local to="$2"
+	local ext=${from##*.}
+	local tmp=$to.tmp
+
+	case $ext in
+	py)
+		echo -e "#!/bin/bash\nexec /usr/bin/python \"$from\"" \"$to\" > "$tmp"
+		;;
+	pl)
+		echo -e "#!/bin/bash\nexec /usr/bin/perl \"$from\"" \"$to\" > "$tmp"
+		;;
+	sh)
+		echo -e "#!/bin/bash\n. \"$from\"" \"$to\" > "$tmp"
+		;;
+	*)
+		if file "$from" | grep -qi executable; then
+			echo -e "#!/bin/bash\n. \"$from\"" \"$to\" > "$tmp"
+		else
+			ln -sf $from $to
+			return
+		fi
+		;;
+	esac
+
+	chmod 755 "$tmp"
+	mv "$tmp" $to
+}
+
 cmd_build()
 {
 	build_pkg
@@ -636,8 +667,9 @@ cmd_log_install()
 	local c_prefix=
 	local c_opmode=opmode_install
 	local c_absolute=0
+	local c_wrap=0
 
-	set -- `getopt 'DLi:a:f:l:bg:cdm:o:psS:vA' $*`
+	set -- `getopt 'DLWi:a:f:l:bg:cdm:o:psS:vA' $*`
 
 	cfgfile_macro()
 	{
@@ -690,6 +722,9 @@ cmd_log_install()
 			;;
 		-L)
 			c_opmode=opmode_link;;
+		-W)
+			c_opmode=opmode_link
+			c_wrap=1;;
 		-A)
 			c_absolute=1;;
 		*)
@@ -736,7 +771,11 @@ cmd_log_install()
 		fi
 		check_create_parent $c_create_leading_dirs $c_target
 		cd `dirname $c_target`
-		ln -sf $c_source `basename $c_target`
+		if [ "$c_wrap" = 1 ]; then
+			install_exe_wrapper $c_source $c_target
+		else
+			ln -sf $c_source `basename $c_target`
+		fi
 		;;
 
 	*)