src/suou/sass.py

@@ -11,7 +11,7 @@ from sass import CompileError
 from sassutils.builder import Manifest
 from importlib.metadata import version as _get_version
 
-from .codecs import quote_css_string, want_bytes, want_bytes
+from .codecs import quote_css_string
 from .validators import must_be
 from .asgi import _MiddlewareFactory, ASGIApp, ASGIReceive, ASGIScope, ASGISend
 from . import __version__ as _suou_version
@@ -83,7 +83,16 @@ class SassAsyncMiddleware(_MiddlewareFactory):
                     break
                 except CompileError as e:
                     logger.error(str(e))
-                    resp_body = '\n'.join([
+                    await send({
+                        'type': 'http.response.start',
+                        'status': self.error_status,
+                        'headers': [
+                            (b'Content-Type', b'text/css; charset=utf-8'),
+                        ]
+                    })
+                    await send({
+                        'type': 'http.response.body',
+                        'body': '\n'.join([
                             '/*',
                             str(e),
                             '***',
@@ -100,25 +109,6 @@ class SassAsyncMiddleware(_MiddlewareFactory):
                             '  user-select: text;'
                             '}'
                         ]).encode('utf-8')
-
-                    await send({
-                        'type': 'http.response.start',
-                        'status': self.error_status,
-                        'headers': [
-                            (b'Content-Type', b'text/css; charset=utf-8'),
-                            (b'Content-Length', want_bytes(f'{len(resp_body)}'))
-                        ]
-                    })
-                    await send({
-                        'type': 'http.response.body',
-                        'body': resp_body
-                    })
-                    await send({
-                        'type': 'http.response.start',
-                        'status': self.error_status,
-                        'headers': [
-                            (b'Content-Type', b'text/css; charset=utf-8'),
-                        ]
                     })
 
                 async def _read_file(path):
@@ -130,21 +120,23 @@ class SassAsyncMiddleware(_MiddlewareFactory):
                             else:
                                 break
                 
+                resp_body = b''
                 async for chunk in _read_file(os.path.join(package_dir, result)):
-                    await send({
+                    resp_body += chunk
-                        'type': 'http.response.body',
-                        'body': chunk
-                    })
 
                 await send({
                     'type': 'http.response.start',
                     'status': 200,
                     'headers': [
                         (b'Content-Type', b'text/css; charset=utf-8'),
-                        (b'Content-Length', want_bytes(f'{len(resp_body)}'))
                     ]
                 })
                 
+                await send({
+                    'type': 'http.response.body',
+                    'body': resp_body
+                })
+
         await self.app(scope, receive, send)