mirror of
https://github.com/gnh1201/welsonjs.git
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68 lines
2.0 KiB
JavaScript
68 lines
2.0 KiB
JavaScript
////////////////////////////////////////////////////////////////////////
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// Base64 API
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////////////////////////////////////////////////////////////////////////
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exports.VERSIONINFO = "Base64 Module (base64.js) version 0.1";
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exports.global = global;
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exports.require = require;
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exports.createMSXMLObject = function() {
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var progIDs = [
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"Msxml2.DOMDocument.6.0",
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"Msxml2.DOMDocument.5.0",
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"Msxml2.DOMDocument.4.0",
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"Msxml2.DOMDocument.3.0",
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"MSXML2.DOMDocument",
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"MSXML.DOMDocument"
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];
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for (var i = 0; i < progIDs.length; i++) {
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try {
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return new ActiveXObject(progIDs[i]);
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} catch(e) {};
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}
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return null;
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};
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exports.getStream_StringToBinary = function(dText) {
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var adTypeText = 2;
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var adTypeBinary = 1;
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var BinaryStream = new ActiveXObject("ADODB.Stream");
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BinaryStream.Type = adTypeText;
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BinaryStream.CharSet = "utf-8";
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BinaryStream.Open();
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BinaryStream.WriteText(dText);
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BinaryStream.Position = 0;
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BinaryStream.Type = adTypeBinary;
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BinaryStream.Position = 0;
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return BinaryStream.Read();
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};
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exports.getStream_BinaryToString = function(dBinary) {
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var adTypeText = 2;
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var adTypeBinary = 1;
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var BinaryStream = new ActiveXObject("ADODB.Stream");
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BinaryStream.Type = adTypeBinary;
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BinaryStream.Open();
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BinaryStream.Write(dBinary);
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BinaryStream.Position = 0;
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BinaryStream.Type = adTypeText;
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BinaryStream.CharSet = "utf-8";
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return BinaryStream.ReadText();
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};
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exports.encode = function(sText) {
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var oXML = exports.createMSXMLObject();
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var oNode = oXML.createElement("base64");
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oNode.dataType = "bin.base64";
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oNode.nodeTypedValue = exports.getStream_StringToBinary(sText);
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return oNode.text;
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};
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exports.decode = function(vCode) {
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var oXML = exports.createMSXMLObject();
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var oNode = oXML.createElement("base64");
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oNode.dataType = "bin.base64";
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oNode.text = vCode;
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return exports.getStream_BinaryToString(oNode.nodeTypedValue);
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};
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