ObjFW  Diff

	while (i < s->cStringLength) {
		cLen = of_string_utf8_to_unicode(s->cString + i,
		    s->cStringLength - i, &c);

		if (cLen == 0 || c > 0x10FFFF) {
			[self freeMemory: unicodeString];
			@throw [OFInvalidEncodingException
			    exceptionWithClass: isa];
		}

		if (c >> 8 < tableSize) {
			of_unichar_t tc = table[c >> 8][c & 0xFF];

			if (tc)
				c = tc;
		}
		unicodeString[j++] = c;

		if (c < 0x80)
			newCStringLength++;
		else if (c < 0x800)
			newCStringLength += 2;
		else if (c < 0x10000)
			newCStringLength += 3;
		else if (c < 0x110000)
			newCStringLength += 4;
		else {
			[self freeMemory: unicodeString];
			@throw [OFInvalidEncodingException
			    exceptionWithClass: isa];
		}

		i += cLen;
	}

	@try {
		newCString = [self allocMemoryWithSize: newCStringLength + 1];
	} @catch (id e) {
		[self freeMemory: unicodeString];
		@throw e;
	}

	j = 0;

	for (i = 0; i < unicodeLen; i++) {
		if ((d = of_string_unicode_to_utf8(unicodeString[i],
		    newCString + j)) == 0) {
			[self freeMemory: unicodeString];
			[self freeMemory: newCString];
			@throw [OFInvalidEncodingException
			    exceptionWithClass: isa];
		}
		j += d;
	}

	assert(j == newCStringLength);
	newCString[j] = 0;
	[self freeMemory: unicodeString];

	}

	switch (of_string_check_utf8(UTF8String, UTF8StringLength, &length)) {
	case 1:
		s->UTF8 = YES;
		break;
	case -1:
		@throw [OFInvalidEncodingException exceptionWithClass: isa];
	}

	s->cString = [self resizeMemory: s->cString
				 toSize: s->cStringLength +
					 UTF8StringLength + 1];
	memcpy(s->cString + s->cStringLength, UTF8String, UTF8StringLength + 1);

	}

	switch (of_string_check_utf8(UTF8String, UTF8StringLength, &length)) {
	case 1:
		s->UTF8 = YES;
		break;
	case -1:
		@throw [OFInvalidEncodingException exceptionWithClass: isa];
	}

	s->cString = [self resizeMemory: s->cString
				 toSize: s->cStringLength +
					 UTF8StringLength + 1];
	memcpy(s->cString + s->cStringLength, UTF8String, UTF8StringLength);

}

- (void)appendString: (OFString*)string
{
	size_t UTF8StringLength;

	if (string == nil)
		@throw [OFInvalidArgumentException exceptionWithClass: isa
							     selector: _cmd];

	UTF8StringLength = [string UTF8StringLength];

	s->cString = [self resizeMemory: s->cString
				 toSize: s->cStringLength +
					 UTF8StringLength + 1];
	memcpy(s->cString + s->cStringLength, string->s->cString,

- (void)appendFormat: (OFConstantString*)format
       withArguments: (va_list)arguments
{
	char *UTF8String;
	int UTF8StringLength;

	if (format == nil)
		@throw [OFInvalidArgumentException exceptionWithClass: isa
							     selector: _cmd];

	if ((UTF8StringLength = of_vasprintf(&UTF8String, [format UTF8String],
	    arguments)) == -1)
		@throw [OFInvalidFormatException exceptionWithClass: isa];

	@try {
		[self appendUTF8String: UTF8String
			    withLength: UTF8StringLength];
	} @finally {
		free(UTF8String);
	}

		/* ASCII */
		if (OF_LIKELY(!(s->cString[i] & 0x80)))
			continue;

		/* A start byte can't happen first as we reversed everything */
		if (OF_UNLIKELY(s->cString[i] & 0x40)) {
			madvise(s->cString, s->cStringLength, MADV_NORMAL);
			@throw [OFInvalidEncodingException
			    exceptionWithClass: isa];
		}

		/* Next byte must not be ASCII */
		if (OF_UNLIKELY(s->cStringLength < i + 1 ||
		    !(s->cString[i + 1] & 0x80))) {
			madvise(s->cString, s->cStringLength, MADV_NORMAL);
			@throw [OFInvalidEncodingException
			    exceptionWithClass: isa];
		}

		/* Next byte is the start byte */
		if (OF_LIKELY(s->cString[i + 1] & 0x40)) {
			s->cString[i] ^= s->cString[i + 1];
			s->cString[i + 1] ^= s->cString[i];
			s->cString[i] ^= s->cString[i + 1];

			i++;
			continue;
		}

		/* Second next byte must not be ASCII */
		if (OF_UNLIKELY(s->cStringLength < i + 2 ||
		    !(s->cString[i + 2] & 0x80))) {
			madvise(s->cString, s->cStringLength, MADV_NORMAL);
			@throw [OFInvalidEncodingException
			    exceptionWithClass: isa];
		}

		/* Second next byte is the start byte */
		if (OF_LIKELY(s->cString[i + 2] & 0x40)) {
			s->cString[i] ^= s->cString[i + 2];
			s->cString[i + 2] ^= s->cString[i];
			s->cString[i] ^= s->cString[i + 2];

			i += 2;
			continue;
		}

		/* Third next byte must not be ASCII */
		if (OF_UNLIKELY(s->cStringLength < i + 3 ||
		    !(s->cString[i + 3] & 0x80))) {
			madvise(s->cString, s->cStringLength, MADV_NORMAL);
			@throw [OFInvalidEncodingException
			    exceptionWithClass: isa];
		}

		/* Third next byte is the start byte */
		if (OF_LIKELY(s->cString[i + 3] & 0x40)) {
			s->cString[i] ^= s->cString[i + 3];
			s->cString[i + 3] ^= s->cString[i];
			s->cString[i] ^= s->cString[i + 3];

			s->cString[i + 1] ^= s->cString[i + 2];
			s->cString[i + 2] ^= s->cString[i + 1];
			s->cString[i + 1] ^= s->cString[i + 2];

			i += 3;
			continue;
		}

		/* UTF-8 does not allow more than 4 bytes per character */
		madvise(s->cString, s->cStringLength, MADV_NORMAL);
		@throw [OFInvalidEncodingException exceptionWithClass: isa];
	}

	madvise(s->cString, s->cStringLength, MADV_NORMAL);
}

- (void)upper
{

- (void)insertString: (OFString*)string
	     atIndex: (size_t)index
{
	size_t newCStringLength;

	if (index > s->length)
		@throw [OFOutOfRangeException exceptionWithClass: isa];

	if (s->UTF8)
		index = of_string_index_to_position(s->cString, index,
		    s->cStringLength);

	newCStringLength = s->cStringLength + [string UTF8StringLength];
	s->cString = [self resizeMemory: s->cString

- (void)deleteCharactersInRange: (of_range_t)range
{
	size_t start = range.start;
	size_t end = range.start + range.length;

	if (start > end)
		@throw [OFInvalidArgumentException exceptionWithClass: isa
							     selector: _cmd];

	if (end > s->length)
		@throw [OFOutOfRangeException exceptionWithClass: isa];

	s->length -= end - start;

	if (s->UTF8) {
		start = of_string_index_to_position(s->cString, start,
		    s->cStringLength);
		end = of_string_index_to_position(s->cString, end,
		    s->cStringLength);
	}

	memmove(s->cString + start, s->cString + end, s->cStringLength - end);
	s->cStringLength -= end - start;
	s->cString[s->cStringLength] = 0;

	@try {
		s->cString = [self resizeMemory: s->cString
					 toSize: s->cStringLength + 1];
	} @catch (OFOutOfMemoryException *e) {
		/* We don't really care, as we only made it smaller */

	}
}

- (void)replaceCharactersInRange: (of_range_t)range
		      withString: (OFString*)replacement
{
	size_t start = range.start;
	size_t end = range.start + range.length;
	size_t newCStringLength, newLength;

	if (start > end)
		@throw [OFInvalidArgumentException exceptionWithClass: isa
							     selector: _cmd];

	if (end > s->length)
		@throw [OFOutOfRangeException exceptionWithClass: isa];

	newLength = s->length - (end - start) + [replacement length];

	if (s->UTF8) {
		start = of_string_index_to_position(s->cString, start,
		    s->cStringLength);
		end = of_string_index_to_position(s->cString, end,

	s->cString[s->cStringLength] = '\0';

	@try {
		s->cString = [self resizeMemory: s->cString
					 toSize: s->cStringLength + 1];
	} @catch (OFOutOfMemoryException *e) {
		/* We don't really care, as we only made it smaller */

	}
}

- (void)deleteTrailingWhitespaces
{
	size_t d;
	char *p;

	s->length -= d;

	@try {
		s->cString = [self resizeMemory: s->cString
					 toSize: s->cStringLength + 1];
	} @catch (OFOutOfMemoryException *e) {
		/* We don't really care, as we only made it smaller */

	}
}

- (void)deleteEnclosingWhitespaces
{
	size_t d, i;
	char *p;

	s->cString[s->cStringLength] = '\0';

	@try {
		s->cString = [self resizeMemory: s->cString
					 toSize: s->cStringLength + 1];
	} @catch (OFOutOfMemoryException *e) {
		/* We don't really care, as we only made it smaller */

	}
}

- copy
{
	return [[OFString alloc] initWithString: self];
}

- (void)makeImmutable
{
	isa = [OFString class];
}
@end