Personal Computer World 2009 February/PCWFEB09.iso/Software/Resources/Chat & Communication/PeerAware 1.03/PeerAware-Setup.exe/Html/scripts/JH.Utilities.js

Text File | 2007-01-14 | 5.8 KB | 213 lines

var JH;
if (!JH) JH = {};
else if (typeof JH != "object")
    throw new Error("JH already exists and is not an object");

if (JH.Utilities)
    throw new Error("JH.Utilities already exsists");

JH.Utilities = {
    HtmlEncode: function(textToEncode)
    {
        var result = textToEncode;

        var amp = /&/gi;
        var gt = />/gi;
        var lt = /</gi;
        var quot = /"/gi;
        var apos = /'/gi;

        var html_gt = ">";
        var html_lt = "<";
        var html_amp = "&";
        var html_quot = """;
        var html_apos = "'";

        result = result.replace(amp, html_amp);
        result = result.replace(quot, html_quot);
        result = result.replace(lt, html_lt);
        result = result.replace(gt, html_gt);
        result = result.replace(apos, html_apos);

        return result;
    },

    HtmlDecode: function(textToDecode)
    {
        var result = textToDecode;

        var amp = /&/gi;
        var gt = />/gi;
        var lt = /</gi;
        var quot = /"/gi;
        var apos = /'/gi;
        var nbsp = / /gi;

        var html_gt = ">";
        var html_lt = "<";
        var html_amp = "&";
        var html_quot = "\"";
        var html_apos = "'";
        var html_nbsp = " ";

        result = result.replace(amp, html_amp);
        result = result.replace(quot, html_quot);
        result = result.replace(lt, html_lt);
        result = result.replace(gt, html_gt);
        result = result.replace(apos, html_apos);
        result = result.replace(nbsp, html_nbsp);

        return result;
    },

    HtmlEncode2: function(textToEncode)
    {
        var result = "";
        for (var i = 0; i<textToEncode.length; i++)
        {
            var currentCharCode = textToEncode.charCodeAt(i);
            result += "&#" + currentCharCode + ";";
        }
        return result;
    },

    HtmlDecode2: function(textToDecode)
    {
        var result = "";

        if (textToDecode.indexOf("&") < 0)
        {
            result = textToDecode;
        }
        else
        {
            for (var i=0; i<textToDecode.length; i++)
            {
                var charCurrent = textToDecode.charAt(i);
                var currentEntity = "";
                if (charCurrent == "&")
                {
                    var endIndex = textToDecode.indexOf(";", i+1);
                    if (endIndex > 0)
                    {
                        var entity = textToDecode.substring(i+1, endIndex);
                        if ((entity.length > 1) && (entity.charAt(0) == "#"))
                        {
                            try
                            {
                                if ((entity.charAt(1) == "x") || (entity.charAt(1) == "X"))
                                {
                                    currentEntity = String.fromCharCode(entity.substring(2));
                                }
                                else
                                {
                                    currentEntity = String.fromCharCode(entity.substring(1));
                                }
                            }
                            catch(e)
                            {
                                i++;
                            }
                        }
                    }
                }
                result += currentEntity;
            }
        }

        return this.HtmlDecode(result);
    },

    UrlEncode: function(textToEncode)
    {
        var result = "";
        for (var i = 0; i<textToEncode.length; i++)
        {
            var currentCharCode = textToEncode.charCodeAt(i).toString(16);
            result += "%" + currentCharCode;
        }
        return result;
    },

    UrlDecode: function(textToDecode)
    {
        var result = "";

        if (textToDecode.indexOf("%") < 0)
        {
            result = textToDecode;
        }
        else
        {
            for (var i=0; i<textToDecode.length; i++)
            {
                var charCurrent = textToDecode.charAt(i);
                var currentEntity = "";
                if (charCurrent == "%")
                {
                    var endIndex = textToDecode.indexOf("%", i+1);
                    if (endIndex < 0)
                    {
                        endIndex = textToDecode.length;
                    }
                    var entity = textToDecode.substring(i+1, endIndex);
                    currentEntity = String.fromCharCode(parseInt(entity,16));
                    i += entity.length;
                }
                result += currentEntity;
            }
        }
        return result;
    },

    XmlEncode: function(textToEncode)
    {
        var result = textToEncode;

        var amp = /&/gi;
        var gt = />/gi;
        var lt = /</gi;
        var quot = /"/gi;
        var apos = /'/gi;

        var xml_gt = ">";
        var xml_lt = "&#60;";
        var xml_amp = "&#38;";
        var xml_quot = """;
        var xml_apos = "'";

        result = result.replace(amp, xml_amp);
        result = result.replace(quot, xml_quot);
        result = result.replace(lt, xml_lt);
        result = result.replace(gt, xml_gt);
        result = result.replace(apos, xml_apos);

        return result;
    },

    XmlDecode: function(textToDecode)
    {
        var result = textToDecode;

        var gt = />/gi;
        var lt = /&#60;/gi;
        var amp = /&#38;/gi;
        var quot = /"/gi;
        var apos = /'/gi;

        var xml_gt = ">";
        var xml_lt = "<";
        var xml_amp = "&";
        var xml_quot = "\"";
        var xml_apos = "'";

         result = result.replace(amp, xml_amp);
        result = result.replace(quot, xml_quot);
        result = result.replace(lt, xml_lt);
        result = result.replace(gt, xml_gt);
        result = result.replace(apos, xml_apos);

        return result;
    }
};