// Generated by CoffeeScript 1.7.1

/*

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

(function() {

var $;
$ = jQuery;
$.fn.extend({
    prettyTextDiff: function(options) {
        var dmp, settings;
        settings = {
            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);
            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);