jQuery.PrettyTextDiff.js

jQuery.PrettyTextDiff.js

// Generated by CoffeeScript 1.9.2

/*
@preserve jQuery.PrettyTextDiff 1.0.4
See https://github.com/arnab/jQuery.PrettyTextDiff/
 */

(function(){
    var $;

    $ = jQuery;

    function diff_charsToLines(a, b){
        function c(a){
            for(var b = "", c = 0, f = -1, g = d.length; f < a.length - 1;){
                f = a.indexOf(" ", c);
                -1 == f && (f = a.length - 1);
                var r = a.substring(c, f + 1), c = f + 1;
                (e.hasOwnProperty ? e.hasOwnProperty(r) : void 0 !== e[r]) ? b += String.fromCharCode(e[r]) : (b += String.fromCharCode(g),
                    e[r] = g,
                    d[g++] = r);
            }
            return b;
        }

        var d = [], e = {};
        d[0] = "";
        var f = c(a), g = c(b);
        return {
            chars1: f,
            chars2: g,
            lineArray: d
        };
    }

    $.fn.extend({
        prettyTextDiff: function(options){
            var dmp, settings;
            settings = {
                mode: "DEFAULT",
                originalContainer: ".original",
                changedContainer: ".changed",
                diffContainer: ".diff",
                cleanup: true,
                debug: false
            };
            settings = $.extend(settings, options);
            $.fn.prettyTextDiff.debug("Options: ", settings, settings);
            dmp = new diff_match_patch();
            return this.each(function() {
                var changed, diff_as_html, diffs, original;
                if(settings.originalContent && settings.changedContent){
                    original = $("<div />").html(settings.originalContent).text();
                    changed = $("<div />").html(settings.changedContent).text();
                } else{
                    original = $(settings.originalContainer, this).text();
                    changed = $(settings.changedContainer, this).text();
                }

                $.fn.prettyTextDiff.debug("Original text found: ", original, settings);
                $.fn.prettyTextDiff.debug("Changed  text found: ", changed, settings);

                if (settings.mode == "WORD" || settings.mode == "LINE") {
                    var a = settings.mode == "WORD" 
                        ? diff_charsToLines(original, changed)
                        : dmp.diff_linesToChars_(original, changed);
                    var lineText1 = a["chars1"];
                    var lineText2 = a["chars2"];
                    var lineArray = a["lineArray"];

                    diffs = dmp.diff_main(lineText1, lineText2, false);

                    dmp.diff_charsToLines_(diffs, lineArray);
                } else {
                    diffs = dmp.diff_main(original, changed);
                }

                if(settings.cleanup)
                    dmp.diff_cleanupSemantic(diffs);
                $.fn.prettyTextDiff.debug("Diffs: ", diffs, settings);
                diff_as_html = $.map(diffs, function(diff) {
                    return $.fn.prettyTextDiff.createHTML(diff);
                });
                $(settings.diffContainer, this).html(diff_as_html.join(""));
                return this;
            });
        }
    });

    $.fn.prettyTextDiff.debug = function(message, object, settings){
        if(settings.debug)
            return console.log(message, object);
    };

    $.fn.prettyTextDiff.createHTML = function(diff){
        var data, html, operation, pattern_amp, pattern_gt, pattern_lt, pattern_para, text;
        html = [];
        pattern_amp = /&/g;
        pattern_lt = /</g;
        pattern_gt = />/g;
        pattern_para = /\n/g;
        operation = diff[0], data = diff[1];
        text = data.replace(pattern_amp, "&amp;").replace(pattern_lt, "&lt;").replace(pattern_gt, "&gt;").replace(pattern_para, "<br>");
        switch(operation){
            case DIFF_INSERT:
                return "<ins>" + text + "</ins>";
            case DIFF_DELETE:
                return "<del>" + text + "</del>";
            case DIFF_EQUAL:
                return "<span>" + text + "</span>";
        }
    };

}).call(this);