feat: add css parser

src/meson.build

@@ -63,6 +63,7 @@ gradience_modules = [
   'modules/flatpak_overrides.py',
   'modules/utils.py',
   'modules/run_async.py',
+  'modules/css.py',
 ]
 
 PY_INSTALLDIR.install_sources(gradience_modules, subdir: 'gradience/modules')

src/modules/css.py

@@ -0,0 +1,43 @@
+import cssutils
+
+COLORS = [
+    "blue_",
+    "green_",
+    "yellow_",
+    "orange_",
+    "red_",
+    "purple_",
+    "brown_",
+    "light_",
+    "dark_",
+]
+
+
+def load_preset_from_file(path):
+    css = ""
+    variables = {}
+    palette = {}
+
+    for color in COLORS:
+        palette[color] = {}
+
+    with open(path, "r", encoding="utf-8") as f:
+        sheet = cssutils.parseString(f.read())
+        for rule in sheet:
+            css_text = rule.cssText
+            if rule.type == rule.UNKNOWN_RULE:
+                if css_text.startswith("@define-color"):
+                    name, color = css_text.split(" ", 1)[1].split(" ", 1)
+                    for color_name in COLORS:
+                        if name.startswith(color_name):
+                            palette[name[:-1]][name[-1:]] = color
+                            break
+                    else:
+                        variables[name] = color
+                    print(f"{name} = {color}")
+            elif rule.type == rule.STYLE_RULE:
+                css += f"\n{rule.cssText}"
+    return css, variables, palette
+
+# if __name__ == "__main__":
+#     load_preset_from_file("/home/user/.config/gtk-4.0/gtk.css")