htmlhint.js

/*
 * grunt-htmlhint
 * https://github.com/yaniswang/grunt-htmlhint
 *
 * Copyright (c) 2013 Yanis Wang
 * Licensed under the MIT license.
 */

'use strict';

module.exports = function(grunt) {

    grunt.registerMultiTask('htmlhint', 'Validate html files with htmlhint.', function() {

        var HTMLHint = require("htmlhint").HTMLHint;
        var options = this.options({
                force: false
            }),
            arrFilesSrc = this.filesSrc,
            verbose = grunt.verbose;

        if (options.htmlhintrc) {
            var rc = grunt.file.readJSON(options.htmlhintrc);
            grunt.util._.defaults(options, rc);
            delete options.htmlhintrc;
        }

        var force = options.force;
        delete options.force;

        var hintCount = 0;
        var fileCount = 0;
        arrFilesSrc.forEach(function(filepath) {
            var file = grunt.file.read(filepath),
                msg = "   " + filepath,
                messages;
            if (file.length) {
                messages = HTMLHint.verify(file, options);
                if (messages.length > 0) {
                    grunt.log.writeln(msg);
                    var arrLogs = HTMLHint.format(messages, {
                        colors: true,
                        indent: 6
                    });
                    arrLogs.forEach(function(log){
                        grunt.log.writeln(log);
                    });
                    grunt.log.writeln('');
                    hintCount += messages.length;
                    fileCount ++;
                }
            }
        });

        if (hintCount > 0) {
            grunt.log.error('%d errors in %d files'.red, hintCount, fileCount);
            return force;
        }
        else{
            verbose.ok();
        }

        grunt.log.ok(arrFilesSrc.length + ' file' + (arrFilesSrc.length === 1 ? '' : 's') + ' lint free.');

    });


    function repeatStr(n, str){
        return new Array(n + 1).join(str || ' ');
    }
};