private UTF8String toTitleCaseSlow() {
StringBuffer sb = new StringBuffer();
String s = toString();
sb.append(s);
sb.setCharAt(0, Character.toTitleCase(sb.charAt(0)));
for (int i = 1; i < s.length(); i++) {
if (sb.charAt(i - 1) == ' ') {
sb.setCharAt(i, Character.toTitleCase(sb.charAt(i)));
}
}
return fromString(sb.toString());
}
/** Returns the title case of this string, that could be used as title. */
public UTF8String toTitleCase() {
if (numBytes == 0) {
return EMPTY_UTF8;
}
byte[] bytes = new byte[numBytes];
for (int i = 0; i < numBytes; i++) {
byte b = getByte(i);
if (i == 0 || getByte(i - 1) == ' ') {
if (numBytesForFirstByte(b) != 1) {
// fallback
return toTitleCaseSlow();
}
int upper = Character.toTitleCase(b);
if (upper > 127) {
// fallback
return toTitleCaseSlow();
}
bytes[i] = (byte) upper;
} else {
bytes[i] = b;
}
}
return fromBytes(bytes);
}
/** Returns the lower case of this string */
public UTF8String toLowerCase() {
if (numBytes == 0) {
return EMPTY_UTF8;
}
byte[] bytes = new byte[numBytes];
bytes[0] = (byte) Character.toTitleCase(getByte(0));
for (int i = 0; i < numBytes; i++) {
byte b = getByte(i);
if (numBytesForFirstByte(b) != 1) {
// fallback
return toLowerCaseSlow();
}
int lower = Character.toLowerCase((int) b);
if (lower > 127) {
// fallback
return toLowerCaseSlow();
}
bytes[i] = (byte) lower;
}
return fromBytes(bytes);
}