Dynamic Grunt Involving N Subdirectories

I have a folder layout such that: / -- css/ -- js/ -- apps/ -- -- myFirstApp/ -- -- mySecondApp/ -- -- ... Each of these are git submodules, and have a corresponding Gruntfile, p

Solution 1:

I don't know of any pre-built Grunt task that will do this for you, but writing the task isn't so difficult. You'll need to pull in the Node fs module to deal with the filesystem and obviously there will be some other things to do... here's a general structure for it with some code and some TODO's:

var fs = require("fs"),
    path = require("path");

module.exports = function ( grunt ) {
  grunt.initConfig({

    ... // all of your other Grunt config// options for our new taskcopymodulefiles: {
      all: {
        rootDir: "apps/"
      }
    }

  });

  // Here's our custom task definition
  grunt.registerMultiTask("copymodulefiles", "Copies files from sub-projects", function() {
    var done = this.async(), // tell Grunt this is an async task
        root = grunt.config(this.name + "." + this.target + ".rootDir"),
        modules = fs.readdirSync(root);

    modules.forEach(function(dirName) {
      var pkg = fs.readFileSync(root + dirName + path.sep + "package.json", "utf8");
          pkgJson = JSON.parse(pkg);

      // TODO: find what you need in the pkgJson variable//       copy files from wherever to wherever// You can write a file like so:
      fs.writeFile(theFilenameToWrite, "Contents of the new file", function (err) {
        // (check for errors!)// log it?
        grunt.log.ok("file written!");
      });

    });

    // Determine when all are complete and call "done()" to tell Grunt everything's complete// call Grunt's "done" method to signal task completiondone();

  });
};

Solution 2:

Try with grunt-shell i found it perfect and did similar tasks like what you are trying to do.

Have a look at my Gruntfile.js configuration what i have written to run shell commands:

shell: {
        multiple: {
            command: ['bower install',
                      'mv bower_components/** public/',
                  'rm -rf bower_components'
                  ].join('&&')
        }
    }

So here i am running bower, then i am copying its components to public folder and after that i am deleting the bower_components folder. So i guess from here onwards you can customize this script as per your usage.