public RedisCommands(RedisBuffer redisBuffer)
{
this.redisBuffer = redisBuffer;
}
/// <summary>
/// Copy an ASCII string to byte array
/// </summary>
/// <param name="str">ASCII string to be copied</param>
/// <param name="sourceIndex">Index on source string to start the copy</param>
/// <param name="redisBuffer">The ProtocolBuffer to ASCII string to be copied</param>
/// <param name="destinationIndex">Index on destination to start the copy</param>
/// <param name="count">Count of ASCII chars to be copied from string</param>
public static unsafe void ASCIICopyTo(this string str, int sourceIndex, RedisBuffer redisBuffer, int destinationIndex, int count)
{
fixed (char* pBytes = str)
{
var pSrc = pBytes;
byte* pBuffer = redisBuffer.GetAddressFromIndex(destinationIndex);
var pDest = pBuffer;
var start = sourceIndex;
var end = Math.Min(start + count, str.Length);
// I would liked to evict this for loop
for (var i = sourceIndex; i < end; i++)
{
*pDest = (byte)*pSrc;
pDest++;
pSrc++;
}
}
}
private static int BulkString(RedisBuffer redisBuffer, int i, params int[] words)
{
foreach (var word in words)
{
redisBuffer.WriteByte(TYPE_BULK_STRINGS, i);
i++;
i += word.DigitsCount().FastToArrayByte(redisBuffer, i);
redisBuffer.CopyFrom(CRLF, 0, i, CRLFLength);
i += CRLFLength;
i += word.FastToArrayByte(redisBuffer, i);
redisBuffer.CopyFrom(CRLF, 0, i, CRLFLength);
i += CRLFLength;
}
return i;
}
/// <summary>
/// Preenche o buffer com os caracteres representando o valor inteiro e retorna o número de dígitos que foi preenchido no buffer
/// </summary>
/// <param name="value">Valor inteiro maior que zero que será convertido para string</param>
/// <param name="redisBuffer">Array de caracteres que conterá a representação char do valor numérico</param>
/// <param name="startIndex">Posição inicial no buffer onde os caracteres serão colocados</param>
/// <returns>A quantidade de dígitos que foram escritas no array indicado por buffer</returns>
public static int FastToArrayByte(this int value, RedisBuffer redisBuffer, int startIndex)
{
var digits = value.DigitsCount();
startIndex += digits;
while (value != 0)
{
var rem = value % 10;
value /= 10;
redisBuffer.WriteByte(CharsTable[rem], --startIndex);
}
return digits;
}
private static int BulkString(RedisBuffer redisBuffer, int i, params byte[][] words)
{
foreach (var word in words)
{
redisBuffer.WriteByte(TYPE_BULK_STRINGS, i++);
var wordLength = word.Length;
i += wordLength.FastToArrayByte(redisBuffer, i);
redisBuffer.CopyFrom(CRLF, 0, i, CRLFLength);
i += CRLFLength;
redisBuffer.CopyFrom(word, 0, i, wordLength);
i += wordLength;
redisBuffer.CopyFrom(CRLF, 0, i, CRLFLength);
i += CRLFLength;
}
return i;
}
