Merge pull request #296 from hyde/feature/libsass_plugin

initial libsass support (by @llonchj)

dev-req.txt

@@ -5,4 +5,5 @@ mock==1.0.1
 nose==1.3.6
 Pillow==2.7.0
 pyScss==1.3.4
+libsass==0.8.2
 flake8==2.4.1

hyde/ext/plugins/css.py

@@ -402,3 +402,93 @@ class SassyCSSPlugin(Plugin):
         options['load_paths'].extend(includes)
         scss = self.scss.Scss(scss_opts=options, scss_vars=self.vars)
         return scss.compile(text)
+
+
+#
+# Sass CSS
+#
+
+
+class SassPlugin(Plugin):
+
+    """
+    The plugin class for LibSass
+    """
+
+    def __init__(self, site):
+        super(SassPlugin, self).__init__(site)
+        try:
+            import sass
+        except ImportError, e:
+            raise HydeException('Unable to import libsass: ' + e.message)
+        else:
+            self.sass = sass
+        self.resources = []
+
+    def _should_parse_resource(self, resource):
+        """
+        Check user defined
+        """
+        files = self.site.config.get("sass", {}).get("files", [])
+        return resource.source_file.kind == 'scss' and \
+            resource.relative_path in files
+
+    @property
+    def options(self):
+        """
+        Returns options depending on development mode
+        """
+        try:
+            mode = self.site.config.mode
+        except AttributeError:
+            mode = "production"
+
+        if 'sass' in self.site.config and \
+                'output_style' in self.site.config.sass:
+            output_style = self.site.config.sass.output_style
+        else:
+            debug = mode.startswith('dev')
+            output_style = 'compressed' if not debug else 'nested'
+
+        opts = {'output_style': output_style}
+        site_opts = self.settings.get('options', {})
+        opts.update(site_opts)
+        return opts
+
+    @property
+    def includes(self):
+        """
+        Returns scss load paths.
+        """
+        return self.settings.get('includes', [])
+
+    def begin_site(self):
+        """
+        Find all the sassycss files and set their relative deploy path.
+        """
+        for resource in self.site.content.walk_resources():
+            if self._should_parse_resource(resource):
+                new_name = resource.source_file.name_without_extension + ".css"
+                target_folder = File(resource.relative_deploy_path).parent
+                resource.relative_deploy_path = target_folder.child(new_name)
+                self.resources.append(resource.relative_path)
+
+    def text_resource_complete(self, resource, text):
+        """
+        Run sassycss compiler on text.
+        """
+        if resource.relative_path not in self.resources:
+            return
+
+        includes = [resource.node.path] + self.includes
+        includes = [path.rstrip(os.sep) + os.sep for path in includes]
+        options = self.options
+        if 'include_paths' not in options:
+            options['include_paths'] = []
+        options['include_paths'].extend(includes)
+        self.logger.error(resource)
+        try:
+            return self.sass.compile(string=text, **options)
+        except Exception, exc:
+            self.logger.error(exc)
+            raise

hyde/tests/ext/scss/expected-sass.css

@@ -0,0 +1 @@
+@import url(inc/reset.css);#header{color:#333;border-left:1px;border-right:2px}#footer{color:#333}#content{-webkit-border-radius:10px;-moz-border-radius:10px;border-radius:10px}

hyde/tests/ext/scss/sass.scss

@@ -0,0 +1,18 @@
+@import "inc/mixin";
+@import "inc/vars";
+@import "inc/reset.css";
+
+#header {
+  color: $base-color * 3;
+  border-left: $the-border;
+  border-right: $the-border * 2;
+}
+
+#footer {
+  color: ($base-color + #111) * 1.5;
+}
+
+#content {
+    @include rounded(10px);
+}
+

hyde/tests/ext/test_sass.py

@@ -0,0 +1,47 @@
+# -*- coding: utf-8 -*-
+"""
+Use nose
+`$ pip install nose`
+`$ nosetests`
+"""
+from hyde.generator import Generator
+from hyde.site import Site
+from hyde.tests.util import assert_no_diff
+
+from fswrap import File, Folder
+
+SCSS_SOURCE = File(__file__).parent.child_folder('scss')
+TEST_SITE = File(__file__).parent.parent.child_folder('_test')
+
+
+class TestSass(object):
+
+    def setUp(self):
+        TEST_SITE.make()
+        TEST_SITE.parent.child_folder(
+            'sites/test_jinja').copy_contents_to(TEST_SITE)
+        SCSS_SOURCE.copy_contents_to(TEST_SITE.child('content/media/css'))
+        File(TEST_SITE.child('content/media/css/site.css')).delete()
+
+    def tearDown(self):
+        TEST_SITE.delete()
+
+    def test_scss(self):
+        s = Site(TEST_SITE)
+        s.config.mode = 'prod'
+        s.config.plugins = ['hyde.ext.plugins.css.SassPlugin']
+        s.config.sass = {'files': ['media/css/sass.scss']}
+        source = TEST_SITE.child('content/media/css/sass.scss')
+        target = File(
+            Folder(s.config.deploy_root_path).child('media/css/sass.css'))
+        gen = Generator(s)
+        gen.generate_resource_at_path(source)
+
+        assert target.exists
+        text = target.read_all()
+        expected_text = File(SCSS_SOURCE.child('expected-sass.css')).read_all()
+        print "TEXT" + "-" * 80
+        print text
+        print "-" * 80
+        print expected_text
+        assert_no_diff(expected_text, text)