repl.js v1.0.0.

.gitignore

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+
+node_modules/

package.json

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+{
+	"name"   : "repl.js",
+	"version": "1.0.0",
+	"author" : "StreetStrider",
+	"license": "MIT",
+	"private": true,
+
+	"main": "repl.js",
+
+	"dependencies":
+	{
+		"cli-color": ">=0.2.3",
+		"lodash": ">=2.4.1"
+	}
+}

repl.js

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+#!/usr/bin/env node
+
+require('./src/repl');

src/console.js

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+
+
+
+var
+	_   = require('lodash'),
+	clc = require('cli-color'),
+
+	console_error = console.error,
+	console_warn  = console.warn,
+	console_info  = console.info;
+
+module.exports = console;
+
+console.color = clc; 
+
+function red (x)
+{
+	return clc.red(x);
+}
+
+console.error = function error ()
+{
+	arguments = _.map(arguments, red);
+	console_error.apply(console, arguments);
+};
+
+
+function yellow (x)
+{
+	return clc.xterm(214)(x);
+}
+
+console.warn = function warn ()
+{
+	arguments = _.map(arguments, yellow);
+	console_warn.apply(console, arguments);
+};
+
+
+function blue (x)
+{
+	return clc.blue(x);
+}
+
+console.info = function info ()
+{
+	arguments = _.map(arguments, blue);
+	console_info.apply(console, arguments);
+};
+
+
+console.dir = function dir (object, options)
+{
+	options || (options = 0);
+	if (typeof Object(options).valueOf() === 'number')
+	{
+		options = { depth: options };
+	}
+	_.extend(options, { colors: true });
+	console.log(util.inspect(object, options));
+};

src/parseArgs.js

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+
+
+
+var
+	cwd  = process.cwd(),
+	path = require('path');
+
+module.exports = function parseArgs (context, modules)
+{
+	modules.forEach(function (module)
+	{
+		if (module.match(/^[a-zA-Z_][a-zA-Z01-9_-]*$/))
+		{
+			var moduleVar = varName(module);
+			tryModule(context, moduleVar, module);
+		}
+		else
+		{
+			var match = module.match(/^([a-zA-Z_][a-zA-Z01-9_]*)=(.+)$/);
+			if (match)
+			{
+				var
+					moduleVar  = match[1],
+					modulePath = path.join(cwd, match[2]);
+
+				tryModule(context, moduleVar, modulePath);
+			}
+			else
+			{
+				var match = module.match(/([a-zA-Z_][a-zA-Z01-9_-]*)(\.[^\/]*)?$/);
+				if (match)
+				{
+					var
+						moduleVar  = varName(match[1]),
+						modulePath = path.join(cwd, module);
+
+					tryModule(context, moduleVar, modulePath);
+				}
+				else
+				{
+					console.warn('Cannot recognize module `'+ module +'`.');
+				}
+			}
+		}
+	});
+};
+
+function tryModule (context, moduleVar, modulePath)
+{
+	try
+	{
+		context[moduleVar] = require(modulePath);
+		if (moduleVar === modulePath)
+		{
+			console.info('Loaded `'+ moduleVar +'`.');
+		}
+		else
+		{
+			console.info('Loaded `'+ modulePath +'` as `'+ moduleVar +'`.');
+		}
+	}
+	catch (e)
+	{
+		console.error('Module `'+ modulePath +'` cannot be found.');
+	}
+}
+
+function varName (moduleName)
+{
+	return moduleName.replace(/-/g, '_').replace(/[^a-zA-Z01-9_]/g, '');
+}

src/repl.js

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+
+
+
+var
+	modules   = process.argv.slice(2),
+
+	repl      = require('repl'),
+
+	parseArgs = require('./parseArgs'),
+	console   = require('./console'),
+
+	context   = {};
+
+parseArgs(context, modules);
+
+instance = repl.start({
+	prompt: 'js > ',
+	ignoreUndefined: true,
+	useGlobal: true
+});
+
+for (var key in context) if (context.hasOwnProperty(key))
+{
+	global[key] = context[key];
+}
+
+global.dir = console.dir;
+global.L   = require('lodash');