ObjFW  Diff

	if (is_utf8)
		@throw [OFInvalidEncodingException newWithClass: isa];

	while (--p >= string)
		*p = tolower((int)*p);

	return self;
}

- replaceOccurrencesOfString: (OFString*)str
		  withString: (OFString*)repl
{
	const char *str_c = [str cString];
	const char *repl_c = [repl cString];
	size_t str_len = [str length];
	size_t repl_len = [repl length];
	size_t i, last, tmp_len;
	char *tmp;

	if (str_len > length)
		return self;

	tmp = NULL;
	tmp_len = 0;

	for (i = 0, last = 0; i <= length - str_len; i++) {
		if (memcmp(string + i, str_c, str_len))
			continue;

		@try {
			tmp = [self resizeMem: tmp
				       toSize: tmp_len + i - last +
					       repl_len + 1];
		} @catch (OFException *e) {
			[self freeMem: tmp];
			@throw e;
		}
		memcpy(tmp + tmp_len, string + last, i - last);
		memcpy(tmp + tmp_len + i - last, repl_c, repl_len);
		tmp_len += i - last + repl_len;
		i += str_len - 1;
		last = i + 1;
	}

	@try {
		tmp = [self resizeMem: tmp
			       toSize: tmp_len + length - last + 1];
	} @catch (OFException *e) {
		[self freeMem: tmp];
		@throw e;
	}
	memcpy(tmp + tmp_len, string + last, length - last);
	tmp_len += length - last;
	tmp[tmp_len] = 0;

	[self freeMem: string];
	string = tmp;
	length = tmp_len;

	return self;
}
@end