/// <summary>Set to contain the contents of a string.</summary>
public virtual void Set(string @string)
{
if (@string.Length > unchecked ((int)(0xffff)) / 3)
{
// maybe too long
Log.Warn("truncating long string: " + @string.Length + " chars, starting with " +
Runtime.Substring(@string, 0, 20));
@string = Runtime.Substring(@string, 0, unchecked ((int)(0xffff)) / 3);
}
length = Utf8Length(@string);
// compute length
if (length > unchecked ((int)(0xffff)))
{
// double-check length
throw new RuntimeException("string too long!");
}
if (bytes == null || length > bytes.Length)
{
// grow buffer
bytes = new byte[length];
}
try
{
// avoid sync'd allocations
DataOutputBuffer obuf = ObufFactory.Get();
obuf.Reset();
WriteChars(obuf, @string, 0, @string.Length);
System.Array.Copy(obuf.GetData(), 0, bytes, 0, length);
}
catch (IOException e)
{
throw new RuntimeException(e);
}
}
/// <summary>Used by child copy constructors.</summary>
protected internal virtual void Copy(IWritable other)
{
lock (this)
{
if (other != null)
{
try
{
var memoryStream = new MemoryStream();
var binaryWriter = new BinaryWriter(memoryStream);
DataOutputBuffer outputBuffer = new DataOutputBuffer();
other.Write(binaryWriter);
DataInputBuffer inputBuffer = new DataInputBuffer();
inputBuffer.Reset(outputBuffer.GetData(), outputBuffer.GetLength());
ReadFields(inputBuffer);
}
catch (IOException e)
{
throw new ArgumentException("map cannot be copied: " + e.Message);
}
}
else
{
throw new ArgumentException("source map cannot be null");
}
}
}
/// STATIC UTILITIES FROM HERE DOWN
/// These are probably not used much anymore, and might be removed...
/// <summary>Convert a string to a UTF-8 encoded byte array.</summary>
/// <seealso cref="Runtime.GetBytesForString(string)"/>
public static byte[] GetBytes(string @string)
{
byte[] result = new byte[Utf8Length(@string)];
try
{
// avoid sync'd allocations
DataOutputBuffer obuf = ObufFactory.Get();
obuf.Reset();
WriteChars(obuf, @string, 0, @string.Length);
System.Array.Copy(obuf.GetData(), 0, result, 0, obuf.GetLength());
}
catch (IOException e)
{
throw new RuntimeException(e);
}
return(result);
}
/// <exception cref="System.IO.UTFDataFormatException"/>
/// <exception cref="System.IO.IOException"/>
private static void ReadChars(BinaryReader reader, StringBuilder buffer, int nBytes)
{
DataOutputBuffer obuf = ObufFactory.Get();
obuf.Reset();
obuf.Write(@in, nBytes);
byte[] bytes = obuf.GetData();
int i = 0;
while (i < nBytes)
{
byte b = bytes[i++];
if ((b & unchecked ((int)(0x80))) == 0)
{
// 0b0xxxxxxx: 1-byte sequence
buffer.Append((char)(b & unchecked ((int)(0x7F))));
}
else
{
if ((b & unchecked ((int)(0xE0))) == unchecked ((int)(0xC0)))
{
if (i >= nBytes)
{
throw new UTFDataFormatException("Truncated UTF8 at " + StringUtils.ByteToHexString
(bytes, i - 1, 1));
}
// 0b110xxxxx: 2-byte sequence
buffer.Append((char)(((b & unchecked ((int)(0x1F))) << 6) | (bytes[i++] & unchecked (
(int)(0x3F)))));
}
else
{
if ((b & unchecked ((int)(0xF0))) == unchecked ((int)(0xE0)))
{
// 0b1110xxxx: 3-byte sequence
if (i + 1 >= nBytes)
{
throw new UTFDataFormatException("Truncated UTF8 at " + StringUtils.ByteToHexString
(bytes, i - 1, 2));
}
buffer.Append((char)(((b & unchecked ((int)(0x0F))) << 12) | ((bytes[i++] & unchecked (
(int)(0x3F))) << 6) | (bytes[i++] & unchecked ((int)(0x3F)))));
}
else
{
if ((b & unchecked ((int)(0xF8))) == unchecked ((int)(0xF0)))
{
if (i + 2 >= nBytes)
{
throw new UTFDataFormatException("Truncated UTF8 at " + StringUtils.ByteToHexString
(bytes, i - 1, 3));
}
// 0b11110xxx: 4-byte sequence
int codepoint = ((b & unchecked ((int)(0x07))) << 18) | ((bytes[i++] & unchecked ((
int)(0x3F))) << 12) | ((bytes[i++] & unchecked ((int)(0x3F))) << 6) | ((bytes[i++
] & unchecked ((int)(0x3F))));
buffer.Append(HighSurrogate(codepoint)).Append(LowSurrogate(codepoint));
}
else
{
// The UTF8 standard describes 5-byte and 6-byte sequences, but
// these are no longer allowed as of 2003 (see RFC 3629)
// Only show the next 6 bytes max in the error code - in case the
// buffer is large, this will prevent an exceedingly large message.
int endForError = Math.Min(i + 5, nBytes);
throw new UTFDataFormatException("Invalid UTF8 at " + StringUtils.ByteToHexString
(bytes, i - 1, endForError));
}
}
}
}
}
}