Chained webui compiler.

hop_runner.dart

library hop_runner;

import 'dart:async';
import 'dart:io';
import 'package:hop/hop.dart';
import 'package:hop/hop_tasks.dart';

void main() {

  final String out = "out";
  final String entryPointDir = "web";
  final String entryPoint = "webui_chained_hop";
  
  Task dwc = createWebuiCompilerTask("$entryPointDir/$entryPoint.html",output:out);
  addTask('webui', dwc);
  
  Task d2js = createDart2JsTask(["$out/$entryPoint.html_bootstrap.dart"], liveTypeAnalysis: true, rejectDeprecatedFeatures: true);
  addTask('dart2js', d2js);
  
  addTask('w2d2js',dwc.chain("webui").and("dart2js", d2js));
    
  runHop();
}

Task createWebuiCompilerTask(String entryPoint,{String output:"web/out"}){
  final entryPointFile = new File(entryPoint);
  final packageDir = new Directory('packages');
  
  assert(packageDir.existsSync());
  assert(entryPointFile.existsSync() && entryPoint.endsWith(".html"));
  
  final args = ["--package-root=${packageDir.path}/",
                "packages/web_ui/dwc.dart",
                "--out",
                "$output/",
                "$entryPoint"
                ];
  
  return new Task.async((TaskContext context){
    return _dwc(context, output, entryPoint).whenComplete((){
      context.info("completed");
      
    });
  });
}
 
Future<bool> _dwc(TaskContext ctx, String output, String entryPoint){
  final packageDir = new Directory('packages');
  assert(packageDir.existsSync());
  
  final args = ["--package-root=${packageDir.path}/",
                "packages/web_ui/dwc.dart",
                "--out",
                "$output/",
                "$entryPoint"
                ];
  return Process.start("dart", args)
      .then((process) {
        return pipeProcess(process,
            stdOutWriter: ctx.info,
            stdErrWriter: ctx.severe);
      }).then((int exitCode){
        return exitCode==1;
      });

}

//courtesy https://github.com/kevmoo/hop.dart
String _getPlatformBin(String binName) {
  if(Platform.operatingSystem == 'windows') {
    return '${binName}.bat';
  } else {
    return binName;
  }
}

Import hop in pubspec.yaml from pub package. However, as of this comment, I had to supply the bleeding edge git repository. People typically put this file in /tool/hop_runner.dart. Run as dart tool/hop_runner.dart.

I just tried to dump this into a project and it silently fails. Could you upload a full example on github??

$ dart tool/hop_runner.dart --log-level all webui
webui: Started at 2013-05-02 14:47:32.330
webui: completed
webui: Finished at 2013-05-02 14:47:33.438
webui: Run time: 0:00:01.108000

actually, ignore my comment, my fork was old and I ran the wrong task.

Thank you for giving it a go. I will convert this to a library with a full example.

You might want to tweak this sample to use:

  addChainedTask('analyze_all', ['analyze_libs', 'analyze_test_libs']);

Thank you, @kevmoo. I'll add that code to the library I created: https://github.com/damondouglas/webui_tasks.dart