// end decodeFromFile
/// <summary>
/// Convenience method for reading a binary file
/// and base64-encoding it.
/// </summary>
/// <remarks>
/// Convenience method for reading a binary file
/// and base64-encoding it.
/// <p>As of v 2.3, if there is a error,
/// the method will throw an java.io.IOException. <b>This is new to v2.3!</b>
/// In earlier versions, it just returned false, but
/// in retrospect that's a pretty poor way to handle it.</p>
/// </remarks>
/// <param name="filename">Filename for reading binary data</param>
/// <returns>base64-encoded string</returns>
/// <exception cref="System.IO.IOException">if there is an error</exception>
/// <since>2.1</since>
public static string EncodeFromFile(string filename)
{
string encodedData = null;
Base64.InputStream bis = null;
try
{
// Set up some useful variables
FilePath file = new FilePath(filename);
byte[] buffer = new byte[Math.Max((int)(file.Length() * 1.4 + 1), 40)];
// Need max() for math on small files (v2.2.1); Need +1 for a few corner cases (v2.3.5)
int length = 0;
int numBytes = 0;
// Open a stream
bis = new Base64.InputStream(new BufferedInputStream(new FileInputStream(file)),
Couchbase.Lite.Support.Base64.Encode);
// Read until done
while ((numBytes = bis.Read(buffer, length, 4096)) >= 0)
{
length += numBytes;
}
// end while
// Save in a variable to return
encodedData = Sharpen.Runtime.GetStringForBytes(buffer, 0, length, Couchbase.Lite.Support.Base64
.PreferredEncoding);
}
catch (IOException e)
{
// end try
throw;
}
finally
{
// Catch and release to execute finally{}
// end catch: java.io.IOException
try
{
bis.Close();
}
catch (Exception)
{
}
}
// end finally
return encodedData;
}
// end finally
// end decodeToFile
/// <summary>
/// Convenience method for reading a base64-encoded
/// file and decoding it.
/// </summary>
/// <remarks>
/// Convenience method for reading a base64-encoded
/// file and decoding it.
/// <p>As of v 2.3, if there is a error,
/// the method will throw an java.io.IOException. <b>This is new to v2.3!</b>
/// In earlier versions, it just returned false, but
/// in retrospect that's a pretty poor way to handle it.</p>
/// </remarks>
/// <param name="filename">Filename for reading encoded data</param>
/// <returns>decoded byte array</returns>
/// <exception cref="System.IO.IOException">if there is an error</exception>
/// <since>2.1</since>
public static byte[] DecodeFromFile(string filename)
{
byte[] decodedData = null;
Base64.InputStream bis = null;
try
{
// Set up some useful variables
FilePath file = new FilePath(filename);
byte[] buffer = null;
int length = 0;
int numBytes = 0;
// Check for size of file
if (file.Length() > int.MaxValue)
{
throw new IOException("File is too big for this convenience method (" + file.Length
() + " bytes).");
}
// end if: file too big for int index
buffer = new byte[(int)file.Length()];
// Open a stream
bis = new Base64.InputStream(new BufferedInputStream(new FileInputStream(file)),
Couchbase.Lite.Support.Base64.Decode);
// Read until done
while ((numBytes = bis.Read(buffer, length, 4096)) >= 0)
{
length += numBytes;
}
// end while
// Save in a variable to return
decodedData = new byte[length];
System.Array.Copy(buffer, 0, decodedData, 0, length);
}
catch (IOException e)
{
// end try
throw;
}
finally
{
// Catch and release to execute finally{}
// end catch: java.io.IOException
try
{
bis.Close();
}
catch (Exception)
{
}
}
// end finally
return decodedData;
}
