Jakefile

// Captionator.js Build Jakefile
//
// usage: (obviously you should omit a given module installation if you already have it!)
//
// npm install --global jshint
// npm install --global jake
// npm install uglify-js
// jake
//
// That should be it.

var globalCopyright = "";
var uglifyParser	= require("uglify-js").parser,
	uglifyProcessor	= require("uglify-js").uglify,
	fs				= require("fs"),
	hint			= require("jshint").JSHINT;

desc("Builds Captionator.js including a minified variant to JS directory.");
task("default", [], function() {
	jake.Task.build.invoke();
	jake.Task.lint.invoke();
	jake.Task.minify.invoke();
	jake.Task.test.invoke();
});

desc("Builds Captionator.js as an unimified file.");
file("build",[],function() {
	directory("js");
	
	// Remove node-only code
	function removeNodeCode(codeIn) {
		var codeParts = codeIn.split(/\/\/\s*NODE\->/g);

		return codeParts.map(function(part) {
				if (part.match(/\/\/\s*<\-NODE/g)) {
					return part.split(/\s*\/\/\s*<\-NODE/g).pop();
				}
				// console.log(part);
				return part;
			}).join("");
	}
	
	console.log("Building Captionator.js...");

	var buildBuffer = "";
	var jsFiles = [], classes = [], general = [], header = [], copyright = [];
		jsFiles = fs.readdirSync("./source").filter(function(file) {
			return !!file.match(/\.js$/i);
		});
	
	function globFiles(inputArray) {
		return inputArray.map(function(item) {
			try {
				console.log("Reading infile " + item);
				return fs.readFileSync("./source/" + item).toString("utf8");
			} catch(error) {
				fail("Failed to read file for globbing: " + item,1);
			}
		});
	}

	function combine(input,indentation) {
		var buf = "";
		var indent = "";

		// Set up indentation
		while (indent.length < indentation) {
			indent += "\t";
		}

		input.forEach(function(item) {
			buf += "\n" + indent + item.split("\n").join("\n" + indent);
			buf += "\n";
		});

		return buf;
	}

	classes = globFiles(jsFiles.filter(function(item) {
			return !!item.match(/captionator\.class/i);
		}));
	
	general = globFiles(jsFiles.filter(function(item) {
			return !!item.match(/captionator\.general/i);
		}));
	
	header = globFiles(jsFiles.filter(function(item) {
			return !!item.match(/captionator\.header/i);
		}));
	
	copyright = globFiles(jsFiles.filter(function(item) {
			return !!item.match(/captionator\.copyright/i);
		}));
	
	console.log("Combining...");

	// Combine!
	// Get all the copyright headers in
	buildBuffer += combine(copyright,0);
	globalCopyright = combine(copyright,0);
	
	buildBuffer += "\n/* Build date: " + (new Date()) + " */\n\n";

	// Start closure
	buildBuffer += "(function(){\n";
	buildBuffer += "\t\"use strict\";\n";

	// Append header code
	buildBuffer += combine(header,1);

	// Append classes
	buildBuffer += combine(classes,1);

	// Append general functions
	buildBuffer += combine(general,1);

	// End closure
	buildBuffer += "\n})();\n";

	// Replace exports with captionator object subproperty
	buildBuffer = buildBuffer.replace(/exports\./g,"captionator.");
	
	// Remove node-code:
	buildBuffer = removeNodeCode(buildBuffer);

	// Output file...
	fs.writeFileSync("./js/captionator.js",buildBuffer);
	console.log("Output result to captionator.js.");
},true);

desc("Minifies an already built Captionator.js.");
task("minify",["build"],function() {

	// Remove debug code
	function removeDebugCode(codeIn) {
		var codeParts = codeIn.split(/\/\/\s*DEBUG\->/g);

		return codeParts.map(function(part) {
				if (part.match(/\/\/\s*<\-DEBUG/g)) {
					return part.split(/\s*\/\/\s*<\-DEBUG/g).pop();
				}
				// console.log(part);
				return part;
			}).join("");
	}

	console.log("Minifying...");
	fs.readFile("./js/captionator.js",function(err,data) {
		if (err) {
			fail("Unable to read unminified captionator.js infile.",1);
		} else {
			var unminifiedLength = data.length;
			var captionatorData = removeDebugCode(data.toString("utf8"));
			var ast = uglifyParser.parse(captionatorData);
			ast = uglifyProcessor.ast_mangle(ast);
			ast = uglifyProcessor.ast_squeeze(ast);
			var captionatorMinified = globalCopyright + "\n\n" + uglifyProcessor.gen_code(ast);

			console.log("Minified. Old size: %d. New size: %d. Saved %d%!",unminifiedLength,captionatorMinified.length,Math.round((1-(captionatorMinified.length/unminifiedLength))*100));

			fs.writeFileSync("./js/captionator-min.js",captionatorMinified);
			console.log("Output result to captionator-min.js.");
		}
	});
},true);

desc("Runs built, unminified captionator.js through jshint.");
task("lint",["build"],function() {
	fs.readFile("./js/captionator.js",function(err,data) {
		if (err) {
			fail("Unable to read unminified captionator.js infile.",1);
		} else {
			if (hint(data.toString("utf8"))) {
				console.log("JSHINT executed without error.");
			} else {
				console.log("JSHINT tripped on the following errors:");
				var errorData = hint.data().errors;

				for (var errorIndex in errorData) {
					if (errorData.hasOwnProperty(errorIndex)) {
						var cError = errorData[errorIndex];
						console.log("\tLine %d, Char %d: %s",cError.line,cError.character,cError.reason);
					}
				}

				fail("JSHINT failed with " + errorData.length + " error(s).");
			}
		}
	});
});

desc("Runs Captionator.js test suite.");
task("test",[],function() {
	var tests = [];
	
	var testFiles = fs.readdirSync("./tests").filter(function(file) {
		return !!file.match(/\.js$/i);
	});
		
	testFiles.forEach(function(item) {
		try {
			console.log("Including testfile " + item);
			var testObject = require("./tests/" + item);
			tests.push({
				"filename": item,
				"name": testObject.name,
				"description": testObject.description,
				"test": testObject.test
			});
		} catch(error) {
			console.log(error);
			fail("Failed to read test file: " + item,1);
		}
	});
	
	tests.forEach(function(test) {
		console.log("Running Test: %s",test.name);
		console.log("\t%s",test.description);
		
		try {
			var result = test.test();
			if (result.passed) {
				console.log("\tTest '%s' passed successfully.",test.filename);
			} else {
				console.log("\t%d tests did not pass.",result.errors.length);
				result.errors.forEach(function(error){
					console.log("\t\t%s",error);
				});
				
				fail("Test '" + test.filename + "' failed!");
			}
		} catch(error) {
			console.log(error);
			fail("Test '" + test.filename + "' failed!");
		}
	});
});