public void Save(string fileName)
{
if (string.IsNullOrEmpty(fileName))
{
throw new ArgumentNullException(nameof(fileName));
}
var fileProvider = new FileProvider(fileName);
byte[] buffer;
if (Path.GetExtension(fileName).Equals(CryptExtension))
{
if (dataCrypter == null)
{
var key = getSecurityKey.Invoke();
dataCrypter = new DataCrypter(key);
}
buffer = dataCrypter.Encrypt(Document.GetBytes(), TextDocument.FormatPrefix);
}
else
{
buffer = Document.GetBytes();
}
fileProvider.SaveData(buffer);
FileName = fileName;
}
public CryptFile(string fileName, Func <string> securityKeyGetter)
{
if (!File.Exists(fileName))
{
throw new FileNotFoundException();
}
getSecurityKey = securityKeyGetter;
var fileProvider = new FileProvider(fileName);
var buffer = fileProvider.LoadData();
if (Path.GetExtension(fileName).Equals(CryptExtension))
{
var key = getSecurityKey.Invoke();
dataCrypter = new DataCrypter(key);
buffer = dataCrypter.Decrypt(buffer, out _);
}
FileName = fileName;
Document = new TextDocument(buffer);
}