ObjFW  Diff

	if (!acceptProlog)
		return NO;

	acceptProlog = NO;

	pi = [pi substringFromIndex: 3
			    toIndex: [pi length]];
	pi = [pi stringByDeletingLeadingAndTrailingWhitespaces];
	pi = [pi stringByDeletingEnclosingWhitespaces];

	cString = [pi cString];
	length = [pi cStringLength];

	for (i = last = 0; i < length; i++) {
		switch (piState) {
		case 0:

	if (buffer[*i] != '=')
		return;

	if ((length = *i - *last) > 0)
		cache_append(cache, buffer + *last, encoding, length);

	[cache deleteLeadingAndTrailingWhitespaces];
	[cache deleteEnclosingWhitespaces];

	cacheCString = [cache cString];
	cacheLength = [cache cStringLength];

	if ((tmp = memchr(cacheCString, ':', cacheLength)) != NULL) {
		attributeName = [[OFString alloc]
		    initWithCString: tmp + 1