.

qwen/nodejs/node_modules/nodemon/lib/utils/log.js

@@ -0,0 +1,82 @@
+var colour = require('./colour');
+var bus = require('./bus');
+var required = false;
+var useColours = true;
+
+var coding = {
+  log: 'black',
+  info: 'yellow',
+  status: 'green',
+  detail: 'yellow',
+  fail: 'red',
+  error: 'red',
+};
+
+function log(type, text) {
+  var msg = '[nodemon] ' + (text || '');
+
+  if (useColours) {
+    msg = colour(coding[type], msg);
+  }
+
+  // always push the message through our bus, using nextTick
+  // to help testing and get _out of_ promises.
+  process.nextTick(() => {
+    bus.emit('log', { type: type, message: text, colour: msg });
+  });
+
+  // but if we're running on the command line, also echo out
+  // question: should we actually just consume our own events?
+  if (!required) {
+    if (type === 'error') {
+      console.error(msg);
+    } else {
+      console.log(msg || '');
+    }
+  }
+}
+
+var Logger = function (r) {
+  if (!(this instanceof Logger)) {
+    return new Logger(r);
+  }
+  this.required(r);
+  return this;
+};
+
+Object.keys(coding).forEach(function (type) {
+  Logger.prototype[type] = log.bind(null, type);
+});
+
+// detail is for messages that are turned on during debug
+Logger.prototype.detail = function (msg) {
+  if (this.debug) {
+    log('detail', msg);
+  }
+};
+
+Logger.prototype.required = function (val) {
+  required = val;
+};
+
+Logger.prototype.debug = false;
+Logger.prototype._log = function (type, msg) {
+  if (required) {
+    bus.emit('log', { type: type, message: msg || '', colour: msg || '' });
+  } else if (type === 'error') {
+    console.error(msg);
+  } else {
+    console.log(msg || '');
+  }
+};
+
+Object.defineProperty(Logger.prototype, 'useColours', {
+  set: function (val) {
+    useColours = val;
+  },
+  get: function () {
+    return useColours;
+  },
+});
+
+module.exports = Logger;