/**
* Returns a subsequence
*/
public override CharSequence subSequence(int start, int end)
{
if (end <= start)
{
return(StringBuilderValue.EMPTY);
}
StringValue stringValue;
if (end - start < 1024)
{
stringValue = new StringBuilderValue(end - start);
}
else
{
stringValue = new LargeStringBuilderValue();
}
int endChunk = end / SIZE;
while (start < end)
{
int startChunk = start / SIZE;
int startOffset = start % SIZE;
if (startChunk == endChunk)
{
stringValue.append(_bufferList[startChunk],
startOffset,
(end - start));
return(stringValue);
}
else
{
int len = SIZE - startOffset;
stringValue.append(_bufferList[startChunk], startOffset, len);
start += len;
}
}
return(stringValue);
}
/**
* Convert to lower case.
*/
public override StringValue toUpperCase()
{
int length = _length;
StringValue string = new LargeStringBuilderValue();
byte [][] bufferList = _bufferList;
for (int i = 0; i < length; i++)
{
int ch = bufferList[i / SIZE][i % SIZE] & 0xff;
if ('a' <= ch && ch <= 'z')
{
ch = (ch + 'A' - 'a');
}
string.append((char)ch);
}
return(string);
}
/**
* Append to a string builder.
*/
public override StringValue appendTo(LargeStringBuilderValue sb)
{
return(sb.append(_value));
}
/**
* Append to a string builder.
*/
public override StringValue appendTo(LargeStringBuilderValue sb)
{
return(getValue().appendTo(sb));
}
/**
* Append to a binary builder.
*/
public override StringValue appendTo(LargeStringBuilderValue sb)
{
return(sb.append(ToString(Env.getInstance())));
}
