JavaScript | Formatted source of The Deletionist bookmarklet from: http://thedeletionist.com/ | See examples of the output at: https://twitter.com/TheDeletionist

thedeletionist_com.js

/*
 * Formatted source of The Deletionist bookmarklet from: http://thedeletionist.com/
 * See examples of the output at: https://twitter.com/TheDeletionist
 */

// javascript:
(function () {
    console.log('*****************');
    console.log('The Deletionist, by Amaranth Borsuk, Jesper Juul, and Nick Montfort. 2013-07-09. http://thedeletionist.com');
    var Rule = function (name, regex, target) {
        this.name = name;
        this.regex = regex;
        if (typeof target === 'undefined') {
            target = 150;
        }
        this.target = target;
    };
    String.prototype.nm = function (regexp) {
        var matches = this.match(regexp);
        return (matches === null) ? 0 : matches.length;
    };
    String.prototype.ml = function (str) {
        var i, matches = this.match(str), totalLength = 0;
        if (matches === null) {
            return 0;
        }
        for (i = 0; matches.length > i; i = i + 1) {
            totalLength = totalLength + matches[i].length;
        }
        return totalLength / matches.length;
    };
    Rule.prototype.sf = function (z, matches) {
        if (this.target > matches) {
            return (matches * 1000 / this.target);
        }
        return (this.target * 1000 / matches);
    };
    Rule.prototype.getFitness = function (z, matches) {
        return this.sf(z, matches);
    };
    var rules = [];

    function ar(name, regex, target) {
        var r = new Rule(name, regex, target);
        rules.push(r);
        return r;
    }

    var r = ar('Alliterative on A', /from|like|since|though|when|(^|\s)a[\w\u00C0-\u017F]+/ig);
    r.getFitness = function (z, matches) {
        var s = this.sf(z, matches), averageLength = z.ml(/\sa[\w\u00C0-\u017F]+\s/ig);
        return s * 0.9 * (averageLength / 5.0);
    };
    r = ar('Alliterative on M', /from|like|since|though|when|(^|\s)m[\w\u00C0-\u017F]+/ig);
    r.getFitness = function (z, matches) {
        var s = this.sf(z, matches), averageLength = z.ml(/\sm[\w\u00C0-\u017F]+\s/ig);
        return s * 0.9 * (averageLength / 5.0);
    };
    r = ar('Alliterative on S', /from|like|since|though|when|(^|\s)s[\w\u00C0-\u017F]+/ig);
    r.getFitness = function (z, matches) {
        var s = this.sf(z, matches), averageLength = z.ml(/\ss[\w\u00C0-\u017F]+\s/ig);
        return s * 0.9 * (averageLength / 5.5);
    };
    r = ar('Alliterative on T', /from|like|since|though|when|(^|\s)t[\w\u00C0-\u017F]+/ig);
    r.getFitness = function (z, matches) {
        var s = this.sf(z, matches), averageLength = z.ml(/\st[\w\u00C0-\u017F]+\s/ig);
        return s * 0.9 * (averageLength / 4.5);
    };
    r = ar('And-or catalog', /[\w\u00C0-\u017F][\w\u00C0-\u017F][\w\u00C0-\u017F\'\u2019]+\s+(and|or)|(the\s+)?worl/ig, 120);
    r.getFitness = function (z, matches) {
        var s = this.sf(z, matches), averageLength = z.ml(/[\w\u00C0-\u017F][\w\u00C0-\u017F][\w\u00C0-\u017F\'\u2019]+\s/ig);
        return s * 0.9 * (averageLength / 10);
    };
    ar('Argument', /[\w\u00C0-\u017F]+\.|(We|I|Indeed|Essentially|Because|With|While|Before|Given|Thus|Therefore|Already|Nevertheless|If|As|But|And|It|Some|All|No|So|In|This|To|Finally|Perhaps|(According|Corresponding|First|Second|Third)(ly)?|Although|Though|Until)\s+[\'\u2019\w\u00C0-\u017F]+|\!|([Tt]he\s+)?[Ww]orl/g, 80);
    ar('Day by day', /\s[\w\u00C0-\u017F]+\s+(by|in|of|to)\s+((a|an|the|some|one)\s+)?[\w\u00C0-\u017F]+/ig);
    ar('Espain', /que|es(o|to)|como|ya|\ses|\ssi|\sno/ig, 80);
    ar('Germanizer', /der|die|das|ich|du|wir|sie|ist|bin|bist|sind|seid|ja|nein|nicht|doch|durch|fur|gegen|ohne|wieder|um|es|ein|eine|einer|mit|sie|sei|von|und|oder|war|\?/ig);
    ar('Hesitation', /eh|er|um|no|yes|yeah?|\-|[\u2012-\u2015]|(the\s+)?worl/ig);
    r.getFitness = function (z, matches) {
        return this.sf(z, matches) * 0.9;
    };
    ar('I am interesting', /[\w\u00C0-\u017F]+ing\s|\si\s|am|will|was|(the\s+)?worl/ig);
    r = ar('I blah blah', /\s(I[\'\u2019][\w\u00C0-\u017F]+|I)\s+[\'\u2019\w\u00C0-\u017F]+\s+[\'\u2019\w\u00C0-\u017F]+(\s+[\w\u00C0-\u017F][\w\u00C0-\u017F][\w\u00C0-\u017F][\w\u00C0-\u017F][\w\u00C0-\u017F][\w\u00C0-\u017F]+)|you\s|([Tt]he\s+)?[Ww]orl/g, 50);
    ar('If it is, is it? So what!', /if|it|is|so|what|\?|\!|(the\s+)?worl/ig);
    ar('Inside and out', /\(|\)|\s(in|out)(side)?\s|[\w\u00C0-\u017F]+(acy|ance|ence|al|dom|ity|ty|ment|ness)\s/ig);
    ar('Interjections', /aha|ah|aw|ha|oho|oh|oo|[\w\u00C0-\u017F]*ion\s|(the\s+)?worl/ig);
    ar('It\'s not you it\'s me', /not|you|it\'s|it\u2019s|it\s+is|me\s|(the\s+)?worl/ig);
    ar('I, you', /\si\s+[\'\u2019\w\u00C0-\u017F]+\s+[\'\u2019\w\u00C0-\u017F]+|you|but|(the\s+)?worl/ig, 50);
    ar('Middle bee', /[\'\u2019\w\u00C0-\u017F]+\s+be[\w\u00C0-\u017F]+\s+[\'\u2019\w\u00C0-\u017F]+|(the\s+)?worl/ig, 90);
    r = ar('Non-Latin alliteration', /( \u03b1[\u03ac-\u03ce\u1f00-\u1ff7]*| \u0430[\u0430-\u044f\u0450-\u045f]*| \u0561[\u0561-\u0587]*| \u05d0[\u05d0-\u05f2]*| \u0627[\u0621-\u064a\u066e-\u06df]*| \u0710[\u0710-\u074f]*| \u07cb[\u07cb-\u07ea]*| \u0d05[\u0d05-\u0d3a]*| \u0e01[\u0e01-\u0e5b]*| \u13a0[\u13a0-\u13f4]*)/ig);
    r.getFitness = function (z) {
        var matches = z.nm(this.regex);
        this.matches = matches;
        return matches / 0.04;
    };
    ar('Party on', /\sthe\s+[\'\u2019\w\u00C0-\u017F]+y\s|[\'\u2019\w\u00C0-\u017F]+\s+on\s|(the\s+)?worl/ig, 120);
    r = ar('Poetic O', /o\s+((a|an|the|some|one|this|his|her|their|who|what|my|your|our|their)\s+)?[\'\u2019\w\u00C0-\u017F]+|(the\s+)?worl/ig);
    r.getFitness = function (z, matches) {
        return this.sf(z, matches) * 1.2;
    };
    ar('Possessive', /(your|my|our|his|her|their)\s+[\w\u00C0-\u017F]+(\s+(and|or|with|are|is|has|was|who|which|that))?/ig);
    r = ar('Sound of music', /do|re|mi|fa|so|la|ti|(the\s+)?worl/ig);
    r.getFitness = function (z, matches) {
        return this.sf(z, matches) * 0.8;
    };
    ar('Steinian continuous present', /(one|I) was|they were|was|were|to be|there|then|[\w\u00C0-\u017F]*ing\s|(the\s+)?worl/ig);
    r = ar('Strictly alliterative on K', /\sk[\w\u00C0-\u017F]+\s/ig);
    r.getFitness = function (z, matches) {
        var s = this.sf(z, matches), averageLength = z.ml(/\sk[\w\u00C0-\u017F]+\s/ig);
        console.log(' K average length: ' + averageLength);
        return s * (averageLength / 5.0);
    };
    r = ar('Strictly alliterative on N', /\sn[\w\u00C0-\u017F]+\s/ig);
    r.getFitness = function (z, matches) {
        var s = this.sf(z, matches), averageLength = z.ml(/\sn[\w\u00C0-\u017F]+\s/ig);
        console.log(' N average length: ' + averageLength);
        return s * (averageLength / 4.25);
    };
    r = ar('Tears in rain', /[\'\u0021-\u002f]+/g);
    r.getFitness = function (z) {
        return 50;
    };
    ar('Tis oft', /tis|oft|\s[\w\u00C0-\u017F]+(\w)\1ed\s|(the\s+)?worl/g);
    r = ar('To be or not', /(to|be|\sor\s|not|\?)|(the\s+)?worl/ig);
    r.getFitness = function (z, matches) {
        return this.sf(z, matches) * 1.1;
    };
    ar('Wondering', /[\w\u00C0-\u017F]+(ish|less|ly)\s|[\'\u2019\w\u00C0-\u017F]+\?|(the\s+)?worl/ig);
    var start = new Date();
    var z = '';
    var elements = getArrayByTagName(document, '*'), i, j, e, child;
    for (i = 0; elements.length > i; i = i + 1) {
        e = elements[i];
        e.normalize();
        if ((e.tagName.toLowerCase() == 'script') || (e.tagName.toLowerCase() == 'style')) {
            continue;
        }
        for (j = 0; e.childNodes.length > j; j = j + 1) {
            child = e.childNodes[j];
            if (child.nodeType == 3) {
                if (child.data.length > 0) {
                    if (0 > child.textContent.indexOf('!--')) {
                        z = z + child.data;
                    }
                }
            }
        }
    }
    console.log('Time to construct z string: ' + (new Date().getTime() - start.getTime()));
    console.log('Text length is ' + z.length);
    start = new Date();
    var best = 0, i, chosen, fitness, matches;
    for (i = 0; rules.length > i; i = i + 1) {
        matches = z.nm(rules[i].regex);
        fitness = rules[i].getFitness(z, matches);
        console.log(rules[i].name + ': ' + matches + ' matches, fitness ' + fitness);
        if (fitness > best) {
            best = fitness;
            chosen = rules[i];
        }
    }
    console.log('SELECTED: ' + chosen.name + ', with fitness ' + best);
    var re = chosen.regex;
    console.log('Time used considering the ' + rules.length + ' rules: ' + (new Date().getTime() - start.getTime()));
    start = new Date();
    function getArrayByTagName(node, tag) {
        var nodes = node.getElementsByTagName(tag), to_return = [], i;
        for (i = 0; nodes.length > i; i = i + 1) {
            to_return.push(nodes[i]);
        }
        return to_return;
    }

    var pre, post, pretext, keeptext, posttext, discard, retain, rest;
    for (i = 0; elements.length > i; i = i + 1) {
        e = elements[i];
        var tag = e.tagName.toLowerCase();
        if ((tag == 'ol') || (tag == 'ul')) {
            e.style.listStyle = 'none none';
            e.style.listStyleType = 'none';
        }
        if ((tag == 'script') || (tag == 'style')) {
            continue;
        }
        for (j = 0; e.childNodes.length > j; j = j + 1) {
            child = e.childNodes[j];
            if (child.nodeType == 3) {
                if (child.data.length > 0) {
                    if (0 > child.textContent.indexOf('!--')) {
                        retain = child.data.match(re);
                        if (retain === null) {
                            pretext = child.data;
                            keeptext = '';
                            posttext = '';
                        } else {
                            keeptext = retain[0];
                            discard = child.data.split(keeptext);
                            pretext = discard.shift();
                            rest = child.data.indexOf(keeptext) + keeptext.length;
                            posttext = child.data.substring(rest);
                            if (posttext === null) {
                                throw new Error(discard.length);
                            }
                        }
                        child.replaceData(0, child.data.length, keeptext);
                        if (pretext.length > 0) {
                            pre = document.createElement('span');
                            pre.appendChild(document.createTextNode(pretext));
                            pre.style.color = 'transparent';
                            e.insertBefore(pre, child);
                        }
                        if (posttext.length > 0) {
                            post = document.createElement('span');
                            post.appendChild(document.createTextNode(posttext));
                            e.insertBefore(post, child.nextSibling);
                            elements.push(post);
                        }
                    }
                }
            }
        }
    }
    console.log('Time used processing text: ' + (new Date().getTime() - start.getTime()));
})();