ObjFW  Diff

	/*
	 * Even though cStringLength can change, length cannot, therefore no
	 * need to change it.
	 */
}

- (void)appendUTF8String: (const char*)UTF8String
{
	size_t UTF8StringLength = strlen(UTF8String);
	size_t length;

	if (UTF8StringLength >= 3 && !memcmp(UTF8String, "\xEF\xBB\xBF", 3)) {
		UTF8String += 3;
		UTF8StringLength -= 3;
	}

	switch (of_string_check_utf8(UTF8String, UTF8StringLength, &length)) {
	case 1:
		s->isUTF8 = YES;
		break;
	case -1:
		@throw [OFInvalidEncodingException newWithClass: isa];
	}

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

	s->cStringLength += UTF8StringLength;
	s->length += length;
}

- (void)appendUTF8String: (const char*)UTF8String
	      withLength: (size_t)UTF8StringLength
{
	size_t length;

	if (UTF8StringLength >= 3 && !memcmp(UTF8String, "\xEF\xBB\xBF", 3)) {
		UTF8String += 3;
		UTF8StringLength -= 3;
	}

	switch (of_string_check_utf8(UTF8String, UTF8StringLength, &length)) {
	case 1:
		s->isUTF8 = YES;
		break;
	case -1:
		@throw [OFInvalidEncodingException newWithClass: isa];
	}

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

	s->cStringLength += UTF8StringLength;
	s->length += length;

	s->cString[s->cStringLength] = 0;
}

- (void)appendCString: (const char*)cString
	 withEncoding: (of_string_encoding_t)encoding
{
	return [self appendCString: cString
		      withEncoding: encoding
			    length: strlen(cString)];
}

- (void)appendCString: (const char*)cString
	 withEncoding: (of_string_encoding_t)encoding
	       length: (size_t)cStringLength
{
	if (encoding == OF_STRING_ENCODING_UTF_8)
		[self appendUTF8String: cString
			    withLength: cStringLength];
	else {
		OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
		[self appendString:
		    [OFString stringWithCString: cString
				       encoding: encoding
					 length: cStringLength]];
		[pool release];
	}
}

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

	if (string == nil)
		@throw [OFInvalidArgumentException newWithClass: 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,
	    UTF8StringLength);

	s->cStringLength += UTF8StringLength;
	s->length += string->s->length;

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

	if (string->s->isUTF8)
		s->isUTF8 = YES;
}

	     withArguments: arguments];
	va_end(arguments);
}

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

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

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

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

- (void)prependString: (OFString*)string
{
	return [self insertString: string
			  atIndex: 0];

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

	if (s->isUTF8)
		index = of_string_index_to_position(s->cString, index,
		    s->cStringLength);

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

	memmove(s->cString + index + string->s->cStringLength,
	    s->cString + index, s->cStringLength - index);
	memcpy(s->cString + index, string->s->cString,
	    string->s->cStringLength);

	s->cStringLength = newCStringLength;
	s->length = newLength;
}

- (void)replaceOccurrencesOfString: (OFString*)string
			withString: (OFString*)replacement
{
	const char *UTF8String = [string UTF8String];
	const char *replacementUTF8String = [replacement UTF8String];
	size_t UTF8StringLength = string->s->cStringLength;
	size_t replacementUTF8StringLength = replacement->s->cStringLength;
	size_t i, last, newCStringLength, newLength;
	char *newCString;

	if (UTF8StringLength > s->cStringLength)
		return;

	newCString = NULL;
	newCStringLength = 0;
	newLength = s->length;

	for (i = 0, last = 0; i <= s->cStringLength - UTF8StringLength; i++) {
		if (memcmp(s->cString + i, UTF8String, UTF8StringLength))
			continue;

		@try {
			newCString = [self
			    resizeMemory: newCString
				  toSize: newCStringLength + i - last +
					  replacementUTF8StringLength + 1];
		} @catch (id e) {
			[self freeMemory: newCString];
			@throw e;
		}
		memcpy(newCString + newCStringLength, s->cString + last,
		    i - last);
		memcpy(newCString + newCStringLength + i - last,
		    replacementUTF8String, replacementUTF8StringLength);

		newCStringLength += i - last + replacementUTF8StringLength;
		newLength = newLength - string->s->length +
		    replacement->s->length;

		i += UTF8StringLength - 1;
		last = i + 1;
	}

	@try {
		newCString = [self
		    resizeMemory: newCString
			  toSize: newCStringLength +