name added

README.md

@@ -1,2 +1,4 @@
 # assignment_async_nodejs
 Async Node.js sprint
+
+Brian P. Gallagher

data/lorem.txt

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+Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
+tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
+quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
+consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
+cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
+proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
+
+
+Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
+tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
+quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
+consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
+cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
+proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
+
+
+Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
+tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
+quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
+consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
+cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
+proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
+
+
+Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
+tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
+quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
+consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
+cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
+proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
+
+
+Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
+tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
+quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
+consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
+cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
+proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
+
+
+
+
+
+
+
+
+
+
+

data/test.txt

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+Hello!Hello again!

events.js

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+var Emitter = require('./lib/my_event_emitter');
+// var Emitter = require('events');
+
+
+var emitter = new Emitter();
+emitter.on('go', function() {
+  console.log(this);
+});
+
+console.log('1. ', emitter._events);
+
+var fn = function() {
+  console.log('Hi');
+};
+
+emitter.on('go', fn);
+// emitter.addListener('go', fn);
+
+console.log('2. ', emitter._events);
+
+emitter.removeListener('go', fn);
+
+console.log('3. ', emitter._events);
+
+emitter.on('go', fn);
+
+console.log('4. ', emitter._events);
+
+emitter.emit('go');
+
+emitter.removeAllListeners('go');
+
+console.log('5. ', emitter._events);
+
+

file_io.js

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+var fs = require('fs');
+var fsp = require('./lib/fsp');
+
+
+const FILE_PATH = `${ __dirname }/data/lorem.txt`;
+// console.log(FILE_PATH);
+
+var data = fs.readFileSync(FILE_PATH, 'utf8');
+// console.log(data);
+
+
+// fs.readFile(FILE_PATH, 'utf8', function(err, data) {
+//   err ? console.error(err) : console.log(data);
+// });
+
+
+fsp.readFile('./data/lorem.txt')
+  .then(function(data) {
+    console.log(data);
+  })
+  .catch(function(err) {
+    console.error(err);
+  });
+
+
+fsp.writeFile('./data/test.txt', 'Hello!')
+  .then(function(res) {
+    console.log(res);
+  })
+  .catch(function(err) {
+    console.error(err);
+  });
+
+
+fsp.appendFile('./data/test.txt', 'Hello again!')
+  .then(function(res) {
+    console.log(res);
+  })
+  .catch(function(err) {
+    console.error(err);
+  });
+
+
+
+
+
+
+
+

lib/fsp.js

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+var fs = require('fs');
+
+
+var fsp = {};
+
+// readFile(fd, options, cb)
+fsp.readFile = function(path, options) {
+  if (!options) {
+    options = 'utf8';
+  }
+
+  return new Promise(function(resolve, reject) {
+    fs.readFile(path, options, function(err, data) {
+      err ? reject(err) : resolve(data);
+    });
+  });
+};
+
+
+// writeFile(file, data, options, cb)
+fsp.writeFile = function(path, options) {
+  if (!options) {
+    options = 'utf8';
+  }
+
+  return new Promise(function(resolve, reject) {
+    fs.writeFile(path, options, function(err) {
+      if (err) {
+        reject(err);
+      } else {
+        fsp.readFile(path)
+          .then(function(data) {
+            resolve(data);
+          })
+          .catch(function(err) {
+            reject(err);
+          });
+      }
+    });
+  });
+};
+
+
+// appendFile(file, data, options, cb)
+fsp.appendFile = function(path, data, options) {
+  if (!options) {
+    options = 'utf8';
+  }
+
+  return new Promise(function(resolve, reject) {
+    fs.appendFile(path, data, options, function(err) {
+      if (err) {
+        reject(err);
+      } else {
+        fsp.readFile(path)
+          .then(function(data) {
+            resolve(data);
+          })
+          .catch(function(err) {
+            reject(err);
+          });
+      }
+    });
+  });
+};
+
+
+module.exports = fsp;
+
+
+
+
+
+
+
+
+
+
+
+
+
+

lib/my_event_emitter.js

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+
+
+function MyEventEmitter() {
+  this._events = {};
+}
+
+
+MyEventEmitter.prototype.emit = function(eventType) {
+  if (!this._events[eventType]) {
+    return;
+  }
+
+  for (var i = 0; i < this._events[eventType].length; i++) {
+    var callback = this._events[eventType][i];
+    callback.call(this);
+  }
+};
+
+
+MyEventEmitter.prototype.on = function(eventType, callback) {
+  this._events[eventType] = this._events[eventType] || [];
+  this._events[eventType].push(callback);
+};
+
+
+MyEventEmitter.prototype.addListener = MyEventEmitter.prototype.on;
+
+
+MyEventEmitter.prototype.removeListener = function(eventType, callback) {
+  if (this._events[eventType] && callback) {
+    for (var i = 0; i < this._events[eventType].length; i++) {
+      if (callback === this._events[eventType][i]) {
+        this._events[eventType].splice(i, 1);
+      }
+    }
+  }
+};
+
+
+MyEventEmitter.prototype.removeAllListeners = function(eventType) {
+  this._events[eventType] = this._events[eventType] || [];
+  this._events[eventType].splice(0);
+  delete this._events[eventType];
+};
+
+
+
+
+module.exports = MyEventEmitter;
+
+
+
+
+
+
+
+
+