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cschep/rtf.js

Last active December 11, 2019 23:41
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  1. cschep renamed this gist Dec 11, 2019. 1 changed file with 0 additions and 0 deletions.
    0 gistfile1.txt → rtf.js
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  2. cschep created this gist Dec 11, 2019.
    136 changes: 136 additions & 0 deletions gistfile1.txt
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    var RTFParser = function(rtfText) {
    this.rtfText = rtfText;
    this.ignoreList = [];
    };

    RTFParser.prototype.removeIgnoredLines = function() {
    var rtfText = this.rtfText;
    for (var i = 0; i < this.ignoreList.length; i++) {
    rtfText = rtfText.replace(this.ignoreList[i], '');
    }

    return rtfText;
    };

    RTFParser.prototype.parse = function(cb) {
    var rtfText = this.removeIgnoredLines();

    var currentArtist = '';
    var currentWord = '';
    var currentControlWord = '';
    var controlWordActive = false;
    var groupActive = false;
    var bold = true;
    var colorGroup = false;
    var garbageChars = 0;

    var result = [];

    var unicodeReplacements = {
    'u225': 'a',
    'u228': 'a',
    'u230': 'ae',
    'u231': 'c',
    'u233': 'e',
    'u237': 'i',
    'u241': 'n',
    'u243': 'o',
    'u246': 'o',
    'u255': 'y',
    'u339': 'oe',
    'u8224': '†'
    };

    function checkControlWord() {
    var colorRegex = /c[f|b]\d/g;
    if (currentControlWord === 'b') {
    bold = true;
    } else if (currentControlWord === 'b0') {
    bold = false;
    } else if (colorRegex.test(currentControlWord)) {
    colorGroup = true;
    } else if (unicodeReplacements.hasOwnProperty(currentControlWord)) {
    currentWord += unicodeReplacements[currentControlWord];
    }
    }

    for (var i = 0; i < rtfText.length; i++) {
    var ch = rtfText[i];
    if (garbageChars > 0) {
    garbageChars--;
    } else {
    if (ch === '\n') {
    if (currentWord !== '') {
    if (bold) {
    currentArtist = currentWord;
    } else {
    var song = { artist: currentArtist, title: currentWord };
    if (this.onSong) {
    this.onSong(song);
    }

    result.push(song);
    }
    }

    currentWord = '';
    } else if (ch === '\\') {
    if (controlWordActive) {
    checkControlWord();

    currentControlWord = '';
    } else {
    controlWordActive = true;
    }

    } else if (ch === '\'') {
    if (controlWordActive) {
    controlWordActive = false;
    garbageChars = 2;
    }
    } else if (ch === '\t') {
    if (controlWordActive) {
    checkControlWord();

    currentControlWord = '';
    controlWordActive = false;
    }
    } else if (ch === ' ') {
    if (controlWordActive) {
    checkControlWord();

    currentControlWord = '';
    controlWordActive = false;
    } else {
    currentWord += ch;
    }
    } else if (ch === '{') {
    groupActive = true;
    currentWord = '';
    } else if (ch === '}') {
    groupActive = false;
    colorGroup = false;
    } else {
    if (controlWordActive) {
    currentControlWord += ch;
    } else {
    if (!groupActive || colorGroup) {
    currentWord += ch;
    }
    }
    }
    }
    }

    if (cb) {
    cb(result);
    }
    };

    //I S O M O R P H I C
    if (typeof exports !== 'undefined') {
    if (typeof module !== 'undefined' && module.exports) {
    exports = module.exports = RTFParser;
    }
    exports.RTFParser = RTFParser;
    }