Add source maps support for SASS/SCSS

Author: Andrey Fedoseev

CHANGES.rst

@@ -2,6 +2,12 @@
 Changes
 =======
 
+Dev
+===
+
+- Add source maps support for SASS/SCSS
+
+
 1.0.1
 =====
 

README.rst

@@ -203,13 +203,16 @@ SASS / SCSS
 ``executable``
   Path to SASS compiler executable. Default: "sass".
 
+``sourcemap_enabled``
+  Boolean. Set to ``True`` to enable source maps. Default: ``False``
+
 ``compass_enabled``
   Boolean. Whether to use compass or not. Compass must be installed in your system. Run "sass --compass" and if no error is shown it means that compass is installed.
 
 Example::
 
     STATIC_PRECOMPILER_COMPILERS = (
-        ('static_precompiler.compilers.SCSS', {"executable": "/usr/bin/sass", "compass_enabled": True}),
+        ('static_precompiler.compilers.SCSS', {"executable": "/usr/bin/sass", "sourcemap_enabled": True, "compass_enabled": True}),
     )
 
 

static_precompiler/compilers/scss.py

@@ -22,8 +22,10 @@ class SCSS(base.BaseCompiler):
 
     IMPORT_RE = re.compile(r"@import\s+(.+?)\s*;", re.DOTALL)
 
-    def __init__(self, executable=settings.SCSS_EXECUTABLE, compass_enabled=settings.SCSS_USE_COMPASS):
+    def __init__(self, executable=settings.SCSS_EXECUTABLE, sourcemap_enabled=False,
+                 compass_enabled=settings.SCSS_USE_COMPASS):
         self.executable = executable
+        self.is_sourcemap_enabled = sourcemap_enabled
         self.is_compass_enabled = compass_enabled
         super(SCSS, self).__init__()
 
@@ -38,7 +40,7 @@ def compile_file(self, source_path):
         full_output_path = self.get_full_output_path(source_path)
         args = [
             self.executable,
-            "--sourcemap=none",
+            "--sourcemap={}".format("auto" if self.is_sourcemap_enabled else "none"),
         ]
 
         if self.is_compass_enabled:

static_precompiler/tests/test_scss.py

@@ -29,6 +29,22 @@ def test_compile_file(monkeypatch, tmpdir):
 """
 
 
+def test_sourcemap(monkeypatch, tmpdir):
+
+    monkeypatch.setattr("static_precompiler.settings.ROOT", tmpdir.strpath)
+    monkeypatch.setattr("static_precompiler.utils.convert_urls", lambda *args: None)
+
+    compiler = compilers.SCSS(sourcemap_enabled=False)
+    compiler.compile_file("styles/test.scss") == "COMPILED/styles/test.css"
+    full_output_path = compiler.get_full_output_path("styles/test.scss")
+    assert not os.path.exists(full_output_path + ".map")
+
+    compiler = compilers.SCSS(sourcemap_enabled=True)
+    compiler.compile_file("styles/test.scss") == "COMPILED/styles/test.css"
+    full_output_path = compiler.get_full_output_path("styles/test.scss")
+    assert os.path.exists(full_output_path + ".map")
+
+
 def test_compile_source():
     compiler = compilers.SCSS(executable="scss")
     assert (