Begin work on FileSystemShell and touch command

src/fs.js

@@ -53,6 +53,7 @@ define(function(require) {
 
   var providers = require('src/providers/providers');
   var adapters = require('src/adapters/adapters');
+  var Shell = require('src/shell');
 
   /*
    * DirectoryEntry
@@ -2473,6 +2474,10 @@ define(function(require) {
       callback(error);
     }
   };
+  FileSystem.prototype.Shell = function(options) {
+    return new Shell(this, options);
+  };
+
   return FileSystem;
 
 });

src/index.js

@@ -4,7 +4,8 @@ define(function(require) {
 
   return {
     FileSystem: require('src/fs'),
+    FileSystemShell: require('src/shell'),
     Path: require('src/path')
-  }
+  };
 
-});
+});

src/shell.js

@@ -0,0 +1,78 @@
+define(function(require) {
+
+  function Shell(fs, options) {
+    options = options || {};
+
+    var cwd = options.cwd || '/';
+
+    Object.defineProperty(this, 'fs', {
+      get: function() { return fs; },
+      enumerable: true
+    });
+
+    Object.defineProperty(this, 'cwd', {
+      get: function() { return cwd; },
+      enumerable: true
+    });
+
+    // We include `cd` on the this vs. proto so that
+    // we can access cwd without exposing it externally.
+    this.cd = function(path) {
+
+    };
+
+  }
+
+  Shell.prototype.ls = function(path) {
+
+  };
+
+  Shell.prototype.rm = function(path, options, callback) {
+
+  };
+
+  Shell.prototype.mv = function(path) {
+
+  };
+
+  Shell.prototype.cp = function(path) {
+
+  };
+
+  Shell.prototype.mkdir = function(path) {
+
+  };
+
+  Shell.prototype.touch = function(path, options, callback) {
+    var fs = this.fs;
+    path = Path.resolve(this.cwd, path);
+
+    function createFile(path) {
+      fs.writeFile(path, '', function(error) {
+        callback(error);
+      });
+    }
+
+    function updateTimes(path) {
+      var now = Date.now();
+      fs.utimes(path, now, now, function(error) {
+        callback(error);
+      });
+    }
+
+    fs.stat(path, function(error, stats) {
+      if(error) {
+        createFile(path);
+      } else {
+        updateTimes(path);
+      }
+    });
+  };
+
+  Shell.prototype.ln = function(path) {
+
+  };
+
+  return Shell;
+
+});