/**
* Returns the index within this text of the first occurrence of the specified character, starting
* the search at the specified index.
*
* @param c the character to search for.
* @param fromIndex the index to start the search from.
* @return the index of the first occurrence of the character in this text that is greater than or
* equal to <code>fromIndex</code>, or <code>-1</code> if the character does not occur.
*/
public int indexOf(char c, int fromIndex) {
if (_data != null) { // Primitive.
for (int i = Math.max(fromIndex, 0); i < _count; i++) {
if (_data[i] == c) return i;
}
return -1;
} else { // Composite.
final int cesure = _head._count;
if (fromIndex < cesure) {
final int headIndex = _head.indexOf(c, fromIndex);
if (headIndex >= 0) return headIndex; // Found in head.
}
final int tailIndex = _tail.indexOf(c, fromIndex - cesure);
return (tailIndex >= 0) ? tailIndex + cesure : -1;
}
}
