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local-file.js 

/*
 * local-file.js: Base implementation of the repository pattern for remote files.
 *
 * (C) 2010, Nodejitsu Inc.
 *
 */

var sys = require('sys'),
    fs = require('fs'),
    eyes = require('eyes'),
    http = require('http'),
    path = require('path'),
    exec = require('child_process').exec,
    haibu = require('haibu'),
    Npm = require('./npm').Npm;

function LocalFile (app, options)

@app {App} Application manifest to wrap

@options {Object} Options for this instance

Constructor function for the LocalFile Repository responsible for loading applications from a location on the local filesystem.

 
var LocalFile = exports.LocalFile = function (app, options) {
  Npm.call(this, app, options);

  options = options || {};
  this.packageDir = options.packageDir || haibu.config.get('directories:packages');
};

Inherit from Npm Repository

 
sys.inherits(LocalFile, Npm);

function fetch (callback)

@callback {function} Continuation to pass control back to when complete.

Checks to see if the app associated with this instance has the requisite properties and that the associated directories exist.

 
LocalFile.prototype.fetch = function (callback) {

Ensure that a valid app was passed into the constructor

 
  if (this.app && this.app.repository && this.app.repository.directory) {
    var appDir = this.app.repository.directory;
    fs.stat(appDir, function (err) {
      callback(err, appDir);
    });
  } 
  else {
    callback(new Error("'app.repository.directory' not specified"));
  }
};

function init (callback)

@callback {function} Continuation to pass control back to when complete.

Initializes this instance by checking the app, then installing npm dependencies, then copying the files located in app.repository.directory to the target directory set on this.appDir

 
LocalFile.prototype.init = function (callback) {
  var self = this;
  this.fetch(function (err, localDirectory) {
    if (err) {
      return callback(err);
    }
    
    self.installDependencies(function (err) {
      if (err) {
        return callback(err);
      }
      
      exec('cp -r ' + localDirectory + ' ' + self.appDir, function (err) {
        if (err) {
          return callback(err);
        }

        self.stat(function (statErr, exists) {
          if (statErr) {
            return callback(statErr);
          }

          fs.readdir(self.appDir, callback);
        });
      });
    });
  });
};