terry@google.com
8992076c3c
- Added parameter support for mixins. - Support var definition with multiple parameters as an @include parameter. - Support @extend and @extend with nested selectors. - Removed hoisting var and cycle checks - can only reference known vars. - Added bunch of tests. BUG= Review URL: https://codereview.chromium.org//23819036 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@28555 260f80e4-7a28-3924-810f-c04153c831b5
82 lines
2.4 KiB
Dart
82 lines
2.4 KiB
Dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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library css;
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import 'dart:io';
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import 'package:path/path.dart' as path;
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import 'package:source_maps/span.dart' show SourceFile;
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import 'parser.dart';
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import 'visitor.dart';
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import 'src/messages.dart';
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import 'src/options.dart';
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void main() {
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// TODO(jmesserly): fix this to return a proper exit code
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var options = PreprocessorOptions.parse(new Options().arguments);
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if (options == null) return;
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messages = new Messages(options: options);
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_time('Total time spent on ${options.inputFile}', () {
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_compile(options.inputFile, options.verbose);
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}, true);
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}
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void _compile(String inputPath, bool verbose) {
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var ext = path.extension(inputPath);
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if (ext != '.css' && ext != '.scss') {
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messages.error("Please provide a CSS/Sass file", null);
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return;
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}
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try {
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// Read the file.
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var filename = path.basename(inputPath);
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var contents = new File(inputPath).readAsStringSync();
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var file = new SourceFile.text(inputPath, contents);
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// Parse the CSS.
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var tree = _time('Parse $filename',
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() => new Parser(file, contents).parse(), verbose);
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_time('Analyzer $filename',
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() => new Analyzer([tree], messages), verbose).run();
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// Emit the processed CSS.
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var emitter = new CssPrinter();
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_time('Codegen $filename',
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() => emitter.visitTree(tree, pretty: true), verbose);
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// Write the contents to a file.
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var outPath = path.join(path.dirname(inputPath), '_$filename');
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new File(outPath).writeAsStringSync(emitter.toString());
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} catch (e) {
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messages.error('error processing $inputPath. Original message:\n $e', null);
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}
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}
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_time(String message, callback(), bool printTime) {
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if (!printTime) return callback();
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final watch = new Stopwatch();
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watch.start();
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var result = callback();
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watch.stop();
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final duration = watch.elapsedMilliseconds;
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_printMessage(message, duration);
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return result;
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}
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void _printMessage(String message, int duration) {
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var buf = new StringBuffer();
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buf.write(message);
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for (int i = message.length; i < 60; i++) buf.write(' ');
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buf.write(' -- ');
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if (duration < 10) buf.write(' ');
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if (duration < 100) buf.write(' ');
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buf..write(duration)..write(' ms');
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print(buf.toString());
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}
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