removed copyrighted script
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/**
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* @fileOverview Generates "Lorem ipsum" style text.
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* @author rviscomi@gmail.com Rick Viscomi,
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* tinsley@tinsology.net Mathew Tinsley
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* @version 1.0
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*/
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/**
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* Copyright (c) 2009, Mathew Tinsley (tinsley@tinsology.net)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the organization nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY MATHEW TINSLEY ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @class Jibborish generator.
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*/
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var LoremIpsum = function () {
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};
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/**
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* Average number of words per sentence.
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* @constant {number}
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*/
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LoremIpsum.WORDS_PER_SENTENCE_AVG = 24.460;
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/**
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* Standard deviation of the number of words per sentence.
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* @constant {number}
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*/
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LoremIpsum.WORDS_PER_SENTENCE_STD = 5.080;
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/**
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* List of possible words.
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* @constant {Array.string}
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*/
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LoremIpsum.WORDS = [
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'lorem', 'ipsum', 'dolor', 'sit', 'amet', 'consectetur',
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'adipiscing', 'elit', 'curabitur', 'vel', 'hendrerit', 'libero',
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'eleifend', 'blandit', 'nunc', 'ornare', 'odio', 'ut',
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'orci', 'gravida', 'imperdiet', 'nullam', 'purus', 'lacinia',
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'a', 'pretium', 'quis', 'congue', 'praesent', 'sagittis',
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'laoreet', 'auctor', 'mauris', 'non', 'velit', 'eros',
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'dictum', 'proin', 'accumsan', 'sapien', 'nec', 'massa',
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'volutpat', 'venenatis', 'sed', 'eu', 'molestie', 'lacus',
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'quisque', 'porttitor', 'ligula', 'dui', 'mollis', 'tempus',
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'at', 'magna', 'vestibulum', 'turpis', 'ac', 'diam',
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'tincidunt', 'id', 'condimentum', 'enim', 'sodales', 'in',
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'hac', 'habitasse', 'platea', 'dictumst', 'aenean', 'neque',
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'fusce', 'augue', 'leo', 'eget', 'semper', 'mattis',
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'tortor', 'scelerisque', 'nulla', 'interdum', 'tellus', 'malesuada',
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'rhoncus', 'porta', 'sem', 'aliquet', 'et', 'nam',
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'suspendisse', 'potenti', 'vivamus', 'luctus', 'fringilla', 'erat',
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'donec', 'justo', 'vehicula', 'ultricies', 'varius', 'ante',
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'primis', 'faucibus', 'ultrices', 'posuere', 'cubilia', 'curae',
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'etiam', 'cursus', 'aliquam', 'quam', 'dapibus', 'nisl',
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'feugiat', 'egestas', 'class', 'aptent', 'taciti', 'sociosqu',
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'ad', 'litora', 'torquent', 'per', 'conubia', 'nostra',
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'inceptos', 'himenaeos', 'phasellus', 'nibh', 'pulvinar', 'vitae',
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'urna', 'iaculis', 'lobortis', 'nisi', 'viverra', 'arcu',
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'morbi', 'pellentesque', 'metus', 'commodo', 'ut', 'facilisis',
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'felis', 'tristique', 'ullamcorper', 'placerat', 'aenean', 'convallis',
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'sollicitudin', 'integer', 'rutrum', 'duis', 'est', 'etiam',
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'bibendum', 'donec', 'pharetra', 'vulputate', 'maecenas', 'mi',
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'fermentum', 'consequat', 'suscipit', 'aliquam', 'habitant', 'senectus',
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'netus', 'fames', 'quisque', 'euismod', 'curabitur', 'lectus',
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'elementum', 'tempor', 'risus', 'cras'
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];
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/**
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* Generate "Lorem ipsum" style words.
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* @param num_words {number} Number of words to generate.
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* @return {string} "Lorem ipsum..."
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*/
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LoremIpsum.prototype.generate = function (num_words) {
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var words, ii, position, word, current, sentences, sentence_length, sentence;
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/**
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* @default 100
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*/
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num_words = num_words || 100;
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words = [LoremIpsum.WORDS[0], LoremIpsum.WORDS[1]];
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num_words -= 2;
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for (ii = 0; ii < num_words; ii++) {
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position = Math.floor(Math.random() * LoremIpsum.WORDS.length);
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word = LoremIpsum.WORDS[position];
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if (ii > 0 && words[ii - 1] === word) {
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ii -= 1;
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} else {
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words[ii] = word;
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}
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}
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sentences = [];
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current = 0;
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while (num_words > 0) {
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sentence_length = this.getRandomSentenceLength();
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if (num_words - sentence_length < 4) {
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sentence_length = num_words;
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}
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num_words -= sentence_length;
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sentence = [];
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for (ii = current; ii < (current + sentence_length); ii++) {
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sentence.push(words[ii]);
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}
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sentence = this.punctuate(sentence);
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current += sentence_length;
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sentences.push(sentence.join(' '));
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}
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return sentences.join(' ');
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};
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/**
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* Insert commas and periods in the given sentence.
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* @param {Array.string} sentence List of words in the sentence.
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* @return {Array.string} Sentence with punctuation added.
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*/
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LoremIpsum.prototype.punctuate = function (sentence) {
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var word_length, num_commas, ii, position;
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word_length = sentence.length;
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/* End the sentence with a period. */
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sentence[word_length - 1] += '.';
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if (word_length < 4) {
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return sentence;
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}
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num_commas = this.getRandomCommaCount(word_length);
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for (ii = 0; ii <= num_commas; ii++) {
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position = Math.round(ii * word_length / (num_commas + 1));
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if (position < (word_length - 1) && position > 0) {
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/* Add the comma. */
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sentence[position] += ',';
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}
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}
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/* Capitalize the first word in the sentence. */
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sentence[0] = sentence[0].charAt(0).toUpperCase() + sentence[0].slice(1);
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return sentence;
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};
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/**
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* Produces a random number of commas.
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* @param {number} word_length Number of words in the sentence.
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* @return {number} Random number of commas
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*/
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LoremIpsum.prototype.getRandomCommaCount = function (word_length) {
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var base, average, standard_deviation;
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/* Arbitrary. */
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base = 6;
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average = Math.log(word_length) / Math.log(base);
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standard_deviation = average / base;
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return Math.round(this.gaussMS(average, standard_deviation));
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};
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/**
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* Produces a random sentence length based on the average word length
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* of an English sentence.
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* @return {number} Random sentence length
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*/
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LoremIpsum.prototype.getRandomSentenceLength = function () {
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return Math.round(
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this.gaussMS(
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LoremIpsum.WORDS_PER_SENTENCE_AVG,
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LoremIpsum.WORDS_PER_SENTENCE_STD
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)
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);
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};
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/**
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* Produces a random number.
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* @return {number} Random number
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*/
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LoremIpsum.prototype.gauss = function () {
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return (Math.random() * 2 - 1) +
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(Math.random() * 2 - 1) +
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(Math.random() * 2 - 1);
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};
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/**
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* Produces a random number with Gaussian distribution.
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* @param {number} mean
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* @param {number} standard_deviation
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* @return {number} Random number
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*/
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LoremIpsum.prototype.gaussMS = function (mean, standard_deviation) {
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return Math.round(this.gauss() * standard_deviation + mean);
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};
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