welsonjs/lib/file.js

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//////////////////////////////////////////////////////////////////////////////////
//
// file.js
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//
// Common routines. Defines LIB object which contains the API, as well as
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// a global console.log function.
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//
/////////////////////////////////////////////////////////////////////////////////
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var LIB = require('lib/std');
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/////////////////////////////////////////////////////////////////////////////////
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// Private APIs / Utility functions
/////////////////////////////////////////////////////////////////////////////////
exports.VERSIONINFO = "File Lib (file.js) version 0.2";
exports.global = global;
exports.require = global.require;
/////////////////////////////////////////////////////////////////////////////////
// exports.fileExists
/////////////////////////////////////////////////////////////////////////////////
exports.fileExists = function(FN) {
var FSO = CreateObject("Scripting.FileSystemObject");
var exists = FSO.FileExists(FN);
FSO = null;
return exists;
};
/////////////////////////////////////////////////////////////////////////////////
// exports.folderExists
/////////////////////////////////////////////////////////////////////////////////
exports.folderExists = function(FN) {
var FSO = CreateObject("Scripting.FileSystemObject");
var exists = FSO.FolderExists(FN);
FSO = null;
return exists;
};
/////////////////////////////////////////////////////////////////////////////////
// exports.fileGet
/////////////////////////////////////////////////////////////////////////////////
exports.fileGet = function(FN) {
var FSO = CreateObject("Scripting.FileSystemObject");
var file = FSO.GetFile(FN);
FSO = null;
return file;
};
/////////////////////////////////////////////////////////////////////////////////
// exports.readFile
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// Read the conents of the pass filename and return as a string
/////////////////////////////////////////////////////////////////////////////////
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exports.readFile = function(FN, charset) {
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if(typeof(charset) === "undefined") {
var FSO = CreateObject("Scripting.FileSystemObject");
var T = null;
try {
var TS = FSO.OpenTextFile(FN, 1);
if (TS.AtEndOfStream) return "";
T = TS.ReadAll();
TS.Close();
TS = null;
} catch (e) {
console.log("ERROR! " + e.number + ", " + e.description + ", FN=" + FN);
}
FSO = null;
return T;
} else {
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var fsT = CreateObject("ADODB.Stream");
fsT.CharSet = charset;
fsT.Open();
fsT.LoadFromFile(FN);
T = fsT.ReadText();
fsT = null;
return T;
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}
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};
/////////////////////////////////////////////////////////////////////////////////
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// exports.writeFile
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// Write the passed content to named disk file
/////////////////////////////////////////////////////////////////////////////////
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exports.writeFile = function(FN, content, charset) {
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var Stream_No_UTF8_BOM = function(objStream) {
var _objStream = CreateObject("ADODB.Stream");
_objStream.Type = 1;
_objStream.Mode = 3;
_objStream.Open();
objStream.Position = 3;
objStream.CopyTo(_objStream);
objStream.Flush();
objStream.Close();
return _objStream;
};
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var ok;
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if (charset) {
console.log("WRITE TO DISK USING ADODB.Stream CHARSET " + charset);
try {
var fsT = CreateObject("ADODB.Stream");
fsT.Type = 2; // save as text/string data.
fsT.Charset = charset; // Specify charset For the source text data.
fsT.Open();
fsT.WriteText(content);
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if (charset == "utf-8") {
Stream_No_UTF8_BOM(fsT).SaveToFile(FN, 2); // save as binary to disk
} else {
fsT.SaveToFile(FN, 2); // save as binary to disk
}
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ok = true;
} catch (e) {
console.log("ADODB.Stream: ERROR! " + e.number + ", " + e.description + ", FN=" + FN);
}
} else {
console.log("WRITE TO DISK USING OpenTextFile CHARSET ascii");
var FSO = CreateObject("Scripting.FileSystemObject");
try {
var TS = FSO.OpenTextFile(FN, 2, true, 0); // ascii
TS.Write(content);
TS.Close();
TS = null;
ok = true;
} catch (e) {
console.log("OpenTextFile: ERROR! " + e.number + ", " + e.description + ", FN=" + FN);
}
FSO = null;
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}
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return ok;
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};
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exports.writeBinaryFile = function(FN, DATA) {
var adTypeText = 1;
var adSaveCreateOverWrite = 2;
var BinaryStream = CreateObject("ADODB.Stream");
BinaryStream.Type = adTypeText;
BinaryStream.Open();
BinaryStream.Write(DATA);
BinaryStream.SaveToFile(FN, adSaveCreateOverWrite);
BinaryStream.Close();
};
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/////////////////////////////////////////////////////////////////////////////////
// exports.moveFile
/////////////////////////////////////////////////////////////////////////////////
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exports.moveFile = function(FROM, TO) {
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var FSO = CreateObject("Scripting.FileSystemObject");
var res = FSO.MoveFile(FROM, TO);
FSO = null;
return res;
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};
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/////////////////////////////////////////////////////////////////////////////////
// exports.createFolder
/////////////////////////////////////////////////////////////////////////////////
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exports.createFolder = function(FN) {
var FSO = CreateObject("Scripting.FileSystemObject");
var res = FSO.CreateFolder(FN);
FSO = null;
return res;
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};
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/////////////////////////////////////////////////////////////////////////////////
// exports.deleteFile
/////////////////////////////////////////////////////////////////////////////////
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exports.deleteFile = function(FN) {
var FSO = CreateObject("Scripting.FileSystemObject");
var res = FSO.DeleteFile(FN);
FSO = null;
return res;
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};
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/////////////////////////////////////////////////////////////////////////////////
exports.includeFile = function(FN) {
var fso = CreateObject("Scripting.FileSystemObject");
var fileStream = fso.openTextFile(FN);
var fileData = fileStream.readAll();
fileStream.Close();
eval(fileData);
};