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// USAGE:  Unpack.js <source archive file> <destination folder>
//         (e.g. Unpack.js "C:\temp\file.zip" "C:\temp\unpacked")

if (WScript.Arguments.Length == 0)
{
  WScript.Echo("Usage:  Unpack.js <source archive file> <destination folder>");
  WScript.Quit();
}

var oFileSystem = new ActiveXObject("Scripting.FileSystemObject");
var oShell = new ActiveXObject("Shell.Application");

var sSrcArchive = oFileSystem.GetAbsolutePathName(WScript.Arguments(0));
if (!oFileSystem.FileExists(sSrcArchive))
{
  if (!oFileSystem.FolderExists(sSrcArchive))
  {
    WScript.Echo("Source does not exist:\n" + sSrcArchive);
    WScript.Quit();
  }
}

var sDstFolder;
if (WScript.Arguments.Length == 1)
{
  sDstFolder = oFileSystem.GetBaseName(WScript.Arguments(0));
}
else
{
  sDstFolder = WScript.Arguments(1);
}
sDstFolder = oFileSystem.GetAbsolutePathName(sDstFolder);
if (!oFileSystem.FolderExists(sDstFolder))
{
  oFileSystem.CreateFolder(sDstFolder);
}

var oDstFolder = oShell.NameSpace(sDstFolder);
var oSrcFolder = oShell.NameSpace(sSrcArchive);
var oFolderItems = oSrcFolder.Items();
for ( var i = 0; i < oFolderItems.Count; i++ )
{
  oDstFolder.CopyHere(oFolderItems.Item(i), 0);
}