ps-show,rd-show,llvmdg-dump: use xdot when available

nice viewer

Signed-off-by: Marek Chalupa <mchqwerty@gmail.com>

tools/llvmdg-show

@@ -4,12 +4,26 @@ DIR=`dirname $0`
 
 #defult program
 GUI=xdg-open
+DIRECTDOT=0
 
-if which okular &>/dev/null; then
+set -e
+
+if which xdot &>/dev/null; then
+	GUI=xdot
+	DIRECTDOT=1
+elif which okular &>/dev/null; then
 	GUI=okular
 elif which evince &>/dev/null; then
 	GUI=evince
 fi
 
-$DIR/llvm-dg-dump $* > ldg-show-output.dot && dot -Tpdf ldg-show-output.dot -o ldg-show-output.pdf && $GUI ldg-show-output.pdf
-rm ldg-show-output*
+$DIR/llvm-dg-dump $* > _ldg-show-output.dot
+
+if [ $DIRECTDOT -eq 1 ]; then
+	$GUI _ldg-show-output.dot
+else
+	dot -Tpdf _ldg-show-output.dot -o ldg-show-output.pdf
+	$GUI _ldg-show-output.pdf
+fi
+
+rm _ldg-show-output*

tools/ps-show

@@ -2,12 +2,28 @@
 
 #defult program
 GUI=xdg-open
+DIRECTDOT=0
 
-if which okular &>/dev/null; then
+# exit on any error
+set -e
+
+if which xdot &>/dev/null; then
+	GUI=xdot
+	DIRECTDOT=1
+elif which okular &>/dev/null; then
 	GUI=okular
 elif which evince &>/dev/null; then
 	GUI=evince
 fi
 
-`dirname $0`/llvm-ps-dump -dot $@ > _ps.dot && dot -Tpdf -o _ps.pdf _ps.dot && $GUI _ps.pdf
-rm _ps.pdf _ps.dot
+`dirname $0`/llvm-ps-dump -dot $@ > _ps.dot
+
+
+if [ $DIRECTDOT -eq 1 ]; then
+	$GUI _ps.dot
+	rm _ps.dot
+else
+	dot -Tpdf -o _ps.pdf _ps.dot
+	$GUI _ps.pdf
+	rm _ps.pdf _ps.dot
+fi

tools/rd-show

@@ -2,12 +2,26 @@
 
 #defult program
 GUI=xdg-open
+DIRECTDOT=0
 
-if which okular &>/dev/null; then
+set -e
+
+if which xdot &>/dev/null; then
+	GUI=xdot
+	DIRECTDOT=1
+elif which okular &>/dev/null; then
 	GUI=okular
 elif which evince &>/dev/null; then
 	GUI=evince
 fi
 
-`dirname $0`/llvm-rd-dump -dot $@ > _rd.dot && dot -Tpdf -o _rd.pdf _rd.dot && $GUI _rd.pdf
-rm _rd.pdf _rd.dot
+`dirname $0`/llvm-rd-dump -dot $@ > _rd.dot
+
+if [ $DIRECTDOT -eq 1 ]; then
+	$GUI _rd.dot
+	rm _rd.dot
+else
+	dot -Tpdf -o _rd.pdf _rd.dot
+	$GUI _rd.pdf
+	rm _rd.pdf _rd.dot
+fi