Initial commit for OpenECOMP SDN-C OA&M

[sdnc/oam.git] / dgbuilder / dgeflows / node_modules / debug / node.js

diff --git a/dgbuilder/dgeflows/node_modules/debug/node.js b/dgbuilder/dgeflows/node_modules/debug/node.js
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+
+/**
+ * Module dependencies.
+ */
+
+var tty = require('tty');
+var util = require('util');
+
+/**
+ * This is the Node.js implementation of `debug()`.
+ *
+ * Expose `debug()` as the module.
+ */
+
+exports = module.exports = require('./debug');
+exports.log = log;
+exports.formatArgs = formatArgs;
+exports.save = save;
+exports.load = load;
+exports.useColors = useColors;
+
+/**
+ * Colors.
+ */
+
+exports.colors = [6, 2, 3, 4, 5, 1];
+
+/**
+ * The file descriptor to write the `debug()` calls to.
+ * Set the `DEBUG_FD` env variable to override with another value. i.e.:
+ *
+ *   $ DEBUG_FD=3 node script.js 3>debug.log
+ */
+
+var fd = parseInt(process.env.DEBUG_FD, 10) || 2;
+var stream = 1 === fd ? process.stdout :
+             2 === fd ? process.stderr :
+             createWritableStdioStream(fd);
+
+/**
+ * Is stdout a TTY? Colored output is enabled when `true`.
+ */
+
+function useColors() {
+  var debugColors = (process.env.DEBUG_COLORS || '').trim().toLowerCase();
+  if (0 === debugColors.length) {
+    return tty.isatty(fd);
+  } else {
+    return '0' !== debugColors
+        && 'no' !== debugColors
+        && 'false' !== debugColors
+        && 'disabled' !== debugColors;
+  }
+}
+
+/**
+ * Map %o to `util.inspect()`, since Node doesn't do that out of the box.
+ */
+
+var inspect = (4 === util.inspect.length ?
+  // node <= 0.8.x
+  function (v, colors) {
+    return util.inspect(v, void 0, void 0, colors);
+  } :
+  // node > 0.8.x
+  function (v, colors) {
+    return util.inspect(v, { colors: colors });
+  }
+);
+
+exports.formatters.o = function(v) {
+  return inspect(v, this.useColors)
+    .replace(/\s*\n\s*/g, ' ');
+};
+
+/**
+ * Adds ANSI color escape codes if enabled.
+ *
+ * @api public
+ */
+
+function formatArgs() {
+  var args = arguments;
+  var useColors = this.useColors;
+  var name = this.namespace;
+
+  if (useColors) {
+    var c = this.color;
+
+    args[0] = '  \u001b[9' + c + 'm' + name + ' '
+      + '\u001b[0m'
+      + args[0] + '\u001b[3' + c + 'm'
+      + ' +' + exports.humanize(this.diff) + '\u001b[0m';
+  } else {
+    args[0] = new Date().toUTCString()
+      + ' ' + name + ' ' + args[0];
+  }
+  return args;
+}
+
+/**
+ * Invokes `console.error()` with the specified arguments.
+ */
+
+function log() {
+  return stream.write(util.format.apply(this, arguments) + '\n');
+}
+
+/**
+ * Save `namespaces`.
+ *
+ * @param {String} namespaces
+ * @api private
+ */
+
+function save(namespaces) {
+  if (null == namespaces) {
+    // If you set a process.env field to null or undefined, it gets cast to the
+    // string 'null' or 'undefined'. Just delete instead.
+    delete process.env.DEBUG;
+  } else {
+    process.env.DEBUG = namespaces;
+  }
+}
+
+/**
+ * Load `namespaces`.
+ *
+ * @return {String} returns the previously persisted debug modes
+ * @api private
+ */
+
+function load() {
+  return process.env.DEBUG;
+}
+
+/**
+ * Copied from `node/src/node.js`.
+ *
+ * XXX: It's lame that node doesn't expose this API out-of-the-box. It also
+ * relies on the undocumented `tty_wrap.guessHandleType()` which is also lame.
+ */
+
+function createWritableStdioStream (fd) {
+  var stream;
+  var tty_wrap = process.binding('tty_wrap');
+
+  // Note stream._type is used for test-module-load-list.js
+
+  switch (tty_wrap.guessHandleType(fd)) {
+    case 'TTY':
+      stream = new tty.WriteStream(fd);
+      stream._type = 'tty';
+
+      // Hack to have stream not keep the event loop alive.
+      // See https://github.com/joyent/node/issues/1726
+      if (stream._handle && stream._handle.unref) {
+        stream._handle.unref();
+      }
+      break;
+
+    case 'FILE':
+      var fs = require('fs');
+      stream = new fs.SyncWriteStream(fd, { autoClose: false });
+      stream._type = 'fs';
+      break;
+
+    case 'PIPE':
+    case 'TCP':
+      var net = require('net');
+      stream = new net.Socket({
+        fd: fd,
+        readable: false,
+        writable: true
+      });
+
+      // FIXME Should probably have an option in net.Socket to create a
+      // stream from an existing fd which is writable only. But for now
+      // we'll just add this hack and set the `readable` member to false.
+      // Test: ./node test/fixtures/echo.js < /etc/passwd
+      stream.readable = false;
+      stream.read = null;
+      stream._type = 'pipe';
+
+      // FIXME Hack to have stream not keep the event loop alive.
+      // See https://github.com/joyent/node/issues/1726
+      if (stream._handle && stream._handle.unref) {
+        stream._handle.unref();
+      }
+      break;
+
+    default:
+      // Probably an error on in uv_guess_handle()
+      throw new Error('Implement me. Unknown stream file type!');
+  }
+
+  // For supporting legacy API we put the FD here.
+  stream.fd = fd;
+
+  stream._isStdio = true;
+
+  return stream;
+}
+
+/**
+ * Enable namespaces listed in `process.env.DEBUG` initially.
+ */
+
+exports.enable(load());