public SDKString concat(SDKString str)
{
sbyte encoding1 = (sbyte)this.getEncoding();
sbyte encoding2 = (sbyte)str.getEncoding();
SDKString dstString = new SDKString();
dstString.m_encoding = (int)encoding1 == (int)encoding2 || encoding2 == (sbyte)1 ? encoding1 : (sbyte)0;
dstString.allocNewData((int)this.m_length + (int)str.m_length);
int dstOffset = SDKString.copyStringData(this, 0, dstString, 0, (int)this.m_length);
SDKString.copyStringData(str, 0, dstString, dstOffset, (int)str.m_length);
return(dstString);
}
public SDKString substring(int startIndex, int endIndex)
{
SDKString sdkString = new SDKString();
sdkString.m_encoding = this.m_encoding;
sdkString.allocNewData(endIndex - startIndex);
int num1 = this.bytesPerChar();
string data = sdkString.m_data;
int num2 = (this.m_offset + startIndex) * num1;
int num3 = (this.m_offset + endIndex) * num1;
int num4 = 0;
char[] charArray = data.ToCharArray();
for (int index = num2; index != num3; ++index)
{
charArray[num4++] = this.m_data[index];
}
string str = new string(charArray);
return(sdkString);
}
public SDKString replace(SDKString[] repl)
{
SDKString dstString = new SDKString();
dstString.m_encoding = (sbyte)this.getEncoding();
dstString.m_offset = 0;
int num1 = 0;
for (int index1 = 0; index1 != (int)this.m_length; ++index1)
{
if (this.charCodeAt(index1) == (ushort)92)
{
++index1;
if (index1 < (int)this.m_length)
{
short num2 = (short)this.charCodeAt(index1);
if (num2 == (short)92)
{
--num1;
}
else if (num2 >= (short)48 && num2 <= (short)90)
{
int index2 = (int)num2 - 48;
if (repl[index2].getEncoding() != dstString.getEncoding())
{
dstString.m_encoding = (sbyte)0;
}
num1 += repl[index2].Length() - 2;
}
}
}
}
dstString.allocNewData((int)this.m_length + num1);
int srcOffset = 0;
int dstOffset = 0;
for (int index1 = 0; index1 != (int)this.m_length; ++index1)
{
if (this.charCodeAt(index1) == (ushort)92)
{
dstOffset += SDKString.copyStringData(this, srcOffset, dstString, dstOffset, index1 - srcOffset);
srcOffset = index1++;
if (index1 < (int)this.m_length)
{
short num2 = (short)this.charCodeAt(index1);
if (num2 == (short)92)
{
srcOffset = index1;
}
else if (num2 >= (short)48 && num2 <= (short)90)
{
int index2 = (int)num2 - 48;
SDKString srcString = repl[index2];
dstOffset += SDKString.copyStringData(srcString, 0, dstString, dstOffset, (int)srcString.m_length);
srcOffset = index1 + 1;
}
}
}
}
SDKString.copyStringData(this, srcOffset, dstString, dstOffset, (int)this.m_length - srcOffset);
return(dstString);
}