private string InitFilePath(string filePath)
{
if (!_isShadowCopy)
{
return(filePath);
}
var gen = new DefaultPathNameGenerator(postfix: ".xlsx");
var util = new DefaultTempUtil(fileNameGen: gen);
var result = util.CreateFile();
using (var fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
using (var ws = new FileStream(result, FileMode.Create, FileAccess.Write, FileShare.None))
{
var read = 0L;
var buffer = new byte[4096];
while (read < fs.Length)
{
var currentRead = fs.Read(buffer, 0, buffer.Length);
read += currentRead;
if (currentRead != 0)
{
ws.Write(buffer, 0, currentRead);
}
}
}
}
return(result);
}
