| public static Find ( byte array, byte needle, int startIndex, int sourceLength ) : int | ||
| array | byte | Source array to search for needle. |
| needle | byte | Needle we are searching for. |
| startIndex | int | Start index in source array. |
| sourceLength | int | Number of bytes in source array, where the needle is searched for. |
| return | int | |
public static int Find( byte[] array, byte[] needle, int startIndex, int sourceLength )
{
int needleLen = needle.Length;
int index;
while ( sourceLength >= needleLen )
{
// find needle's starting element
index = Array.IndexOf( array, needle[0], startIndex, sourceLength - needleLen + 1 );
// if we did not find even the first element of the needls, then the search is failed
if ( index == -1 )
return -1;
int i, p;
// check for needle
for ( i = 0, p = index; i < needleLen; i++, p++ )
{
if ( array[p] != needle[i] )
{
break;
}
}
if ( i == needleLen )
{
// needle was found
return index;
}
// continue to search for needle
sourceLength -= ( index - startIndex + 1 );
startIndex = index + 1;
}
return -1;
}
} private int FindBoundary()
{
byte[] imageDelimiter;
if (_boundary.Length != 0)
{
imageDelimiter = (byte[])_boundary;
}
else
{
imageDelimiter = _header;
}
return(ByteArrayUtils.Find(_buffer, imageDelimiter, _position, RemainingBytes));
}
