63 lines
1.5 KiB
Dart
63 lines
1.5 KiB
Dart
import 'dart:async';
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import 'package:build/build.dart';
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import 'package:code_buffer/code_buffer.dart';
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import 'package:file/file.dart';
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import 'package:jael/jael.dart' as jael;
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import 'package:jael_preprocessor/jael_preprocessor.dart' as jael;
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import 'package:symbol_table/symbol_table.dart';
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Builder jaelBuilder(BuilderOptions options) => new JaelBuilder(options);
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class JaelBuilder implements Builder {
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final BuilderOptions options;
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final List<jael.Patcher> patch;
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const JaelBuilder(this.options, {this.patch: const []});
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@override
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Map<String, List<String>> get buildExtensions {
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return {
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'.jl': ['.html'],
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};
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}
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@override
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Future build(BuildStep buildStep) async {
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CodeBuffer buf;
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if (options.config['minify'] == true)
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buf = new CodeBuffer(space: '', newline: '', trailingNewline: false);
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else
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buf = new CodeBuffer();
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Directory dir;
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var errors = <jael.JaelError>[];
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var doc = await jael.parseDocument(
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await buildStep.readAsString(buildStep.inputId),
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sourceUrl: buildStep.inputId.uri,
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onError: errors.add,
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);
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doc = await jael.resolve(
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doc,
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dir,
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onError: errors.add,
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patch: this.patch,
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);
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if (errors.isNotEmpty) {
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jael.Renderer.errorDocument(errors, buf);
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return;
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}
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var scope = new SymbolTable(values: new Map.from(options.config));
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const jael.Renderer().render(doc, buf, scope);
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buildStep.writeAsString(
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buildStep.inputId.changeExtension('.html'),
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buf.toString(),
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);
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}
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}
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