private static string ComputeHash(string s)
{
var encoding = Encoding.ASCII;
var algorithm = new MD5CryptoServiceProvider();
var output = (algorithm.ComputeHash(encoding.GetBytes(s)));
return(TextConversion.ToBase32String(output));
}
public StandardTempIdentityFileService(IFile file, TempIdentityFileServiceType serviceType)
{
IDirectory dir;
var buffer = new StringBuilder(file.Address.Uri.Length * 2);
this.file = file;
this.serviceType = serviceType;
buffer.Append("$TMP_ID_");
buffer.Append(file.Name).Append('_');
if (serviceType.TempFileSystem != null)
{
buffer.Append(TextConversion.ToBase32String(new MD5CryptoServiceProvider().ComputeHash(Encoding.ASCII.GetBytes(file.Address.Uri))).Trim('='));
buffer.Append('_');
}
string s;
if (serviceType.UniqueIdentifier.IndexOf(PredicateUtils.Not <char>(Char.IsLetterOrDigit)) >= 0)
{
s = TextConversion.ToBase32String(Encoding.ASCII.GetBytes(serviceType.UniqueIdentifier)).Trim('=');
}
else
{
s = serviceType.UniqueIdentifier;
}
buffer.Append(s);
if (serviceType.TempFileSystem == null)
{
dir = file.ParentDirectory;
this.tempFile = dir.ResolveFile(buffer.ToString());
}
else
{
var tempFileSystem = serviceType.TempFileSystem;
dir = tempFileSystem.ResolveDirectory("/VFSTempIdentity");
dir.Create();
this.tempFile = dir.ResolveFile(buffer.ToString());
}
}