与所有的文件做任务，一饮而尽后运行code [英] Run code after gulp task done with all files

问题描述

所以，我一直在尝试咕嘟咕嘟来看看它是如何比较至于速度呻吟，我是pretty IM pressed的结果，但我有一件事我不知道该怎么办中咕嘟咕嘟。

So I have been trying out Gulp to see how it compares to Grunt as far as speed and I am pretty impressed with the results but I have one thing I don't know how to do in Gulp.

所以我有这样的任务，一饮而尽，以压缩HTML：

So I have this gulp task to minify HTML:

gulp.task('html-minify', function() {
  var files = [
    relativePaths.webPath + '/*.html',
    relativePaths.webPath + '/components/**/*.html',
    relativePaths.webPath + '/' + relativePaths.appPath + '/components/**/*.html'
  ];

  var changedFiles = buildMetaData.getChangedFiles(files);

  //TODO: needs to execute only after successful run of the task
  buildMetaData.addBuildMetaDataFiles(changedFiles);
  buildMetaData.writeFile();
  return gulp.src(changedFiles, {
      base: relativePaths.webPath
    })
    .pipe(filelog())
    .pipe(minifyHtml({
      empty: true,
      quotes: true,
      conditionals: true,
      comments: true
    }))
    .pipe(gulp.dest(relativePaths.webPath + '/' + relativePaths.appPath +  '/' + relativePaths.buildPath));
});

该buildMetaData对象，我需要定制的功能，为什么我不能使用像一饮而尽改变的插件。我试图弄清楚是怎么（如果可能）缩小完成后过程中的所有文件，并运行成功运行code块。是像这可能与一饮而尽？

The buildMetaData object has custom functionality that I need and why I can't use plugins like gulp-changed. What I am trying to figure out is how (if possible) to run a block of code after the minify is done process all files and it run successfully. Is something like this possible with gulp?

推荐答案

您可以只让这取决于任务 HTML-缩小：

You could just make a task which depends on html-minify:

gulp.task('other-task', ['html-minify'], function() {
  //stuff
});

您还可以收听流结束的 HTML-缩小任务内部事件：

You could also listen for the stream end event inside the html-minify task:

gulp.task('html-minify', function(done) {
  var files = [
    relativePaths.webPath + '/*.html',
    relativePaths.webPath + '/components/**/*.html',
    relativePaths.webPath + '/' + relativePaths.appPath + '/components/**/*.html'
  ];

  var changedFiles = buildMetaData.getChangedFiles(files);

  //TODO: needs to execute only after successful run of the task
  buildMetaData.addBuildMetaDataFiles(changedFiles);
  buildMetaData.writeFile();
  var stream = gulp.src(changedFiles, {
      base: relativePaths.webPath
    })
    .pipe(filelog())
    .pipe(minifyHtml({
      empty: true,
      quotes: true,
      conditionals: true,
      comments: true
    }))
    .pipe(gulp.dest(relativePaths.webPath + '/' + relativePaths.appPath +  '/' + relativePaths.buildPath));

  stream.on('end', function() {
    //run some code here
    done();
  });
  stream.on('error', function(err) {
    done(err);
  });
});

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