D-Net

var gulp = require('gulp'),

	concat = require('gulp-concat'),

	uglify = require('gulp-uglify'),

	util = require('gulp-util'),

	jshint = require('gulp-jshint'),

	size = require('gulp-size'),

	connect = require('gulp-connect'),

	replace = require('gulp-replace'),

	htmlv = require('gulp-html-validator'),

	inquirer = require('inquirer'),

	semver = require('semver'),

	exec = require('child_process').exec,

	fs = require('fs'),

	package = require('./package.json'),

	bower = require('./bower.json');

var srcDir = './src/';

/*

 *	Usage : gulp build --types=Bar,Line,Doughnut

 *	Output: - A built Chart.js file with Core and types Bar, Line and Doughnut concatenated together

 *			- A minified version of this code, in Chart.min.js

 */

gulp.task('build', function(){

	// Default to all of the chart types, with Chart.Core first

	var srcFiles = [FileName('Core')],

		isCustom = !!(util.env.types),

		outputDir = (isCustom) ? 'custom' : '.';

	if (isCustom){

		util.env.types.split(',').forEach(function(type){ return srcFiles.push(FileName(type))});

	}

	else{

		// Seems gulp-concat remove duplicates - nice!

		// So we can use this to sort out dependency order - aka include Core first!

		srcFiles.push(srcDir+'*');

	}

	return gulp.src(srcFiles)

		.pipe(concat('Chart.js'))

		.pipe(replace('{{ version }}', package.version))

		.pipe(gulp.dest(outputDir))

		.pipe(uglify({preserveComments:'some'}))

		.pipe(concat('Chart.min.js'))

		.pipe(gulp.dest(outputDir));

	function FileName(moduleName){

		return srcDir+'Chart.'+moduleName+'.js';

	};

});

/*

 *	Usage : gulp bump

 *	Prompts: Version increment to bump

 *	Output: - New version number written into package.json & bower.json

 */

gulp.task('bump', function(complete){

	util.log('Current version:', util.colors.cyan(package.version));

	var choices = ['major', 'premajor', 'minor', 'preminor', 'patch', 'prepatch', 'prerelease'].map(function(versionType){

		return versionType + ' (v' + semver.inc(package.version, versionType) + ')';

	});

	inquirer.prompt({

		type: 'list',

		name: 'version',

		message: 'What version update would you like?',

		choices: choices

	}, function(res){

		var increment = res.version.split(' ')[0],

			newVersion = semver.inc(package.version, increment);

		// Set the new versions into the bower/package object

		package.version = newVersion;

		bower.version = newVersion;

		// Write these to their own files, then build the output

		fs.writeFileSync('package.json', JSON.stringify(package, null, 2));

		fs.writeFileSync('bower.json', JSON.stringify(bower, null, 2));

		complete();

	});

});

gulp.task('release', ['build'], function(){

	exec('git tag -a v' + package.version);

});

gulp.task('jshint', function(){

	return gulp.src(srcDir + '*.js')

		.pipe(jshint())

		.pipe(jshint.reporter('default'));

});

gulp.task('valid', function(){

	return gulp.src('samples/*.html')

    .pipe(htmlv());

});

gulp.task('library-size', function(){

	return gulp.src('Chart.min.js')

		.pipe(size({

			gzip: true

		}));

});

gulp.task('module-sizes', function(){

	return gulp.src(srcDir + '*.js')

	.pipe(uglify({preserveComments:'some'}))

	.pipe(size({

		showFiles: true,

		gzip: true

	}))

});

gulp.task('watch', function(){

	gulp.watch('./src/*', ['build']);

});

gulp.task('test', ['jshint', 'valid']);

gulp.task('size', ['library-size', 'module-sizes']);

gulp.task('default', ['build', 'watch']);

gulp.task('server', function(){

	connect.server({

		port: 8000

	});

});

// Convenience task for opening the project straight from the command line

gulp.task('_open', function(){

	exec('open http://localhost:8000');

	exec('subl .');

});

gulp.task('dev', ['server', 'default']);