--- /dev/null
+/**
+ * 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.init = init;
+exports.log = log;
+exports.formatArgs = formatArgs;
+exports.save = save;
+exports.load = load;
+exports.useColors = useColors;
+
+/**
+ * Colors.
+ */
+
+exports.colors = [6, 2, 3, 4, 5, 1];
+
+/**
+ * Build up the default `inspectOpts` object from the environment variables.
+ *
+ * $ DEBUG_COLORS=no DEBUG_DEPTH=10 DEBUG_SHOW_HIDDEN=enabled node script.js
+ */
+
+exports.inspectOpts = Object.keys(process.env).filter(function (key) {
+ return /^debug_/i.test(key);
+}).reduce(function (obj, key) {
+ // camel-case
+ var prop = key
+ .substring(6)
+ .toLowerCase()
+ .replace(/_([a-z])/g, function (_, k) { return k.toUpperCase() });
+
+ // coerce string value into JS value
+ var val = process.env[key];
+ if (/^(yes|on|true|enabled)$/i.test(val)) val = true;
+ else if (/^(no|off|false|disabled)$/i.test(val)) val = false;
+ else if (val === 'null') val = null;
+ else val = Number(val);
+
+ obj[prop] = val;
+ return obj;
+}, {});
+
+/**
+ * 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;
+
+if (1 !== fd && 2 !== fd) {
+ util.deprecate(function(){}, 'except for stderr(2) and stdout(1), any other usage of DEBUG_FD is deprecated. Override debug.log if you want to use a different log function (https://git.io/debug_fd)')()
+}
+
+var stream = 1 === fd ? process.stdout :
+ 2 === fd ? process.stderr :
+ createWritableStdioStream(fd);
+
+/**
+ * Is stdout a TTY? Colored output is enabled when `true`.
+ */
+
+function useColors() {
+ return 'colors' in exports.inspectOpts
+ ? Boolean(exports.inspectOpts.colors)
+ : tty.isatty(fd);
+}
+
+/**
+ * Map %o to `util.inspect()`, all on a single line.
+ */
+
+exports.formatters.o = function(v) {
+ this.inspectOpts.colors = this.useColors;
+ return util.inspect(v, this.inspectOpts)
+ .split('\n').map(function(str) {
+ return str.trim()
+ }).join(' ');
+};
+
+/**
+ * Map %o to `util.inspect()`, allowing multiple lines if needed.
+ */
+
+exports.formatters.O = function(v) {
+ this.inspectOpts.colors = this.useColors;
+ return util.inspect(v, this.inspectOpts);
+};
+
+/**
+ * Adds ANSI color escape codes if enabled.
+ *
+ * @api public
+ */
+
+function formatArgs(args) {
+ var name = this.namespace;
+ var useColors = this.useColors;
+
+ if (useColors) {
+ var c = this.color;
+ var prefix = ' \u001b[3' + c + ';1m' + name + ' ' + '\u001b[0m';
+
+ args[0] = prefix + args[0].split('\n').join('\n' + prefix);
+ args.push('\u001b[3' + c + 'm+' + exports.humanize(this.diff) + '\u001b[0m');
+ } else {
+ args[0] = new Date().toUTCString()
+ + ' ' + name + ' ' + args[0];
+ }
+}
+
+/**
+ * Invokes `util.format()` with the specified arguments and writes to `stream`.
+ */
+
+function log() {
+ return stream.write(util.format.apply(util, 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;
+}
+
+/**
+ * Init logic for `debug` instances.
+ *
+ * Create a new `inspectOpts` object in case `useColors` is set
+ * differently for a particular `debug` instance.
+ */
+
+function init (debug) {
+ debug.inspectOpts = {};
+
+ var keys = Object.keys(exports.inspectOpts);
+ for (var i = 0; i < keys.length; i++) {
+ debug.inspectOpts[keys[i]] = exports.inspectOpts[keys[i]];
+ }
+}
+
+/**
+ * Enable namespaces listed in `process.env.DEBUG` initially.
+ */
+
+exports.enable(load());
projects / josuexyz / .git / blobdiff