[gtk+] Adwaita: add a sassc based parse-sass.sh script

[Lapo Calamandrei <lapo src gnome org>]

commit 96fc66d32761e8224224d172cdcefc3fb7efab15
Author: Lapo Calamandrei <calamandrei gmail com>
Date:   Wed May 3 17:31:50 2017 +0200

    Adwaita: add a sassc based parse-sass.sh script

 gtk/theme/Adwaita/parse-sass.sh |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)
---
diff --git a/gtk/theme/Adwaita/parse-sass.sh b/gtk/theme/Adwaita/parse-sass.sh
new file mode 100755
index 0000000..f2bd6e1
--- /dev/null
+++ b/gtk/theme/Adwaita/parse-sass.sh
@@ -0,0 +1,13 @@
+#! /bin/bash
+
+if [ ! "$(which sassc 2> /dev/null)" ]; then
+   echo sassc needs to be installed to generate the css.
+   exit 1
+fi
+
+SASSC_OPT="-M -t compact"
+
+echo Generating the css...
+
+sassc $SASSC_OPT gtk-contained.scss gtk-contained.css
+sassc $SASSC_OPT gtk-contained-dark.scss gtk-contained-dark.css