/// <summary>
/// Generates file version path segment suitable for usage in file name.
/// This method is slow as it does byte file sig calculation
/// </summary>
public string GenerateContentFileVersionSegment(string filePath)
{
if (m_ContentFS == null)
{
return(null);
}
if (m_ContentFSConnect == null)
{
return(null);
}
if (filePath.IsNullOrWhiteSpace())
{
return(null);
}
using (var session = m_ContentFS.StartSession(m_ContentFSConnect))
{
var buf = new byte[8 * 1024];
var fName = m_ContentFS.CombinePaths(m_ContentFSRootPath, filePath);
var fsFile = session[fName] as FileSystemFile;
if (fsFile == null)
{
return(null);
}
long sz = 0;
var csum = new NFX.IO.ErrorHandling.Adler32();
using (var stream = fsFile.FileStream)
while (true)
{
var got = stream.Read(buf, 0, buf.Length);
if (got <= 0)
{
break;
}
sz += got;
csum.Add(buf, 0, got);
}
var data = (ulong)sz << 32 | (ulong)csum.Value;
return(data.ToString("X").ToLowerInvariant());
}
}
/// <summary>
/// Generates file version path segment suitable for usage in file name.
/// This method is slow as it does byte file sig calculation
/// </summary>
public string GenerateContentFileVersionSegment(string filePath)
{
if (m_ContentFS==null) return null;
if (m_ContentFSConnect==null) return null;
if (filePath.IsNullOrWhiteSpace()) return null;
using(var session = m_ContentFS.StartSession(m_ContentFSConnect))
{
var buf = new byte[8*1024];
var fName = m_ContentFS.CombinePaths(m_ContentFSRootPath, filePath);
var fsFile = session[fName] as FileSystemFile;
if (fsFile==null) return null;
long sz = 0;
var csum = new NFX.IO.ErrorHandling.Adler32();
using(var stream = fsFile.FileStream)
while(true)
{
var got = stream.Read(buf, 0, buf.Length);
if (got<=0) break;
sz += got;
csum.Add(buf, 0, got);
}
var data = (ulong)sz << 32 | (ulong)csum.Value;
return data.ToString("X").ToLowerInvariant();
}
}
