/**
* Copies the character from this text builder into the destination character array.
*
* @param srcBegin this text start index.
* @param srcEnd this text end index (not included).
* @param dst the destination array to copy the data into.
* @param dstBegin the offset into the destination array.
* @throws IndexOutOfBoundsException if <code>(srcBegin < 0) ||
* (dstBegin < 0) || (srcBegin > srcEnd) || (srcEnd > this.length())
* || ((dstBegin + srcEnd - srcBegin) > dst.length)</code>
*/
public final void getChars(int srcBegin, int srcEnd, char[] dst, int dstBegin) {
if ((srcBegin < 0) || (srcBegin > srcEnd) || (srcEnd > this._length))
throw new IndexOutOfBoundsException();
for (int i = srcBegin, j = dstBegin; i < srcEnd; ) {
char[] chars0 = _high[i >> B1];
int i0 = i & M1;
int length = MathLib.min(C1 - i0, srcEnd - i);
System.arraycopy(chars0, i0, dst, j, length);
i += length;
j += length;
}
}
/**
* Appends the characters from a subarray of the char array argument.
*
* @param chars the character array source.
* @param offset the index of the first character to append.
* @param length the number of character to append.
* @return <code>this</code>
* @throws IndexOutOfBoundsException if <code>(offset < 0) ||
* (length < 0) || ((offset + length) > chars.length)</code>
*/
public final TextBuilder append(char chars[], int offset, int length) {
final int end = offset + length;
if ((offset < 0) || (length < 0) || (end > chars.length)) throw new IndexOutOfBoundsException();
int newLength = _length + length;
while (_capacity < newLength) {
increaseCapacity();
}
for (int i = offset, j = _length; i < end; ) {
char[] dstChars = _high[j >> B1];
int dstBegin = j & M1;
int inc = MathLib.min(C1 - dstBegin, end - i);
System.arraycopy(chars, i, dstChars, dstBegin, inc);
i += inc;
j += inc;
}
_length = newLength;
return this;
}
/**
* Appends a subsequence of the specified text. If the specified character sequence is <code>null
* </code> this method is equivalent to <code>append("null")</code>.
*
* @param txt the text to append or <code>null</code>.
* @param start the index of the first character to append.
* @param end the index after the last character to append.
* @return <code>this</code>
* @throws IndexOutOfBoundsException if <code>(start < 0) || (end < 0)
* || (start > end) || (end > txt.length())</code>
*/
public final TextBuilder append(Text txt, int start, int end) {
if (txt == null) return append("null");
if ((start < 0) || (end < 0) || (start > end) || (end > txt.length()))
throw new IndexOutOfBoundsException();
int newLength = _length + end - start;
while (_capacity < newLength) {
increaseCapacity();
}
for (int i = start, j = _length; i < end; ) {
char[] chars = _high[j >> B1];
int dstBegin = j & M1;
int inc = MathLib.min(C1 - dstBegin, end - i);
txt.getChars(i, (i += inc), chars, dstBegin);
j += inc;
}
_length = newLength;
return this;
}
/**
* Prints out this text builder to the specified writer.
*
* @param writer the destination writer.
*/
public void print(Writer writer) throws IOException {
for (int i = 0; i < _length; i += C1) {
char[] chars = _high[i >> B1];
writer.write(chars, 0, MathLib.min(C1, _length - i));
}
}
