correcting generate-assets.sh script and Makefile (thanks Krytarik)

Makefile

@@ -16,6 +16,7 @@ css:
 	$(SASS) --update $(SASSFLAGS) $(SCSS_DIR320):$(DIST_DIR320)
 
 gresource: css
+	scripts/generate-assets.sh
 	$(GLIB_COMPILE_RESOURCES) --sourcedir=$(RES_DIR) $(RES_DIR)/gtk.gresource.xml
 	$(GLIB_COMPILE_RESOURCES) --sourcedir=$(RES_DIR320) $(RES_DIR320)/gtk.gresource.xml
 
@@ -30,6 +31,7 @@ clean:
 	rm -f $(RES_DIR)/gtk.gresource
 	rm -rf $(DIST_DIR320)
 	rm -f $(RES_DIR320)/gtk.gresource
+	rm -f assets/*.png
 
 install: all
 	install -d -m755 $(INSTALL_DIR)

scripts/generate-assets.sh

@@ -1,16 +1,9 @@
 #!/bin/bash
 
-if [[ -z $1 ]] ; then
- echo "Usage: $0 [FILE]"
- exit 0
-else
- FILENAME=$1
-fi
+SVGTABLE="assets/all-assets.svg"
+IDPRFX="EXP-"
 
-PREFIX=EXP-
-
-for ID in `grep -o "id=\"$PREFIX.*\"" $FILENAME | cut -d\" -f2` ; do
- OUTPUT=${ID#$PREFIX}.png
- echo "Exporting area $ID to $OUTPUT..."
- inkscape --export-id=$ID --export-png=$OUTPUT --file=$FILENAME
+for ID in $(sed -n 's/.*id="\('"$IDPRFX"'[^"]\+\)".*/\1/p' $SVGTABLE); do
+    echo "Generating 'assets/${ID#$IDPRFX}.png' ..."
+    inkscape --without-gui --export-id=$ID --export-png=assets/${ID#$IDPRFX}.png $SVGTABLE
 done