ObjFW  Diff

							  IRI.path]
						mode: mode];
		stream = [OFGZIPStream streamWithStream: stream mode: mode];
		goto end;
	}

	percentEncodedPath = IRI.percentEncodedPath;
	pos = [percentEncodedPath rangeOfString: @"!"].location;
	pos = [percentEncodedPath
	    rangeOfString: @"!"
		  options: OFStringSearchBackwards].location;

	if (pos == OFNotFound)
		@throw [OFInvalidArgumentException exception];

	archiveIRI = [OFIRI IRIWithString:
	    [percentEncodedPath substringWithRange: OFMakeRange(0, pos)]
	    .stringByRemovingPercentEncoding];

OFIRI *
OFArchiveIRIHandlerIRIForFileInArchive(OFString *scheme,
    OFString *pathInArchive, OFIRI *archiveIRI)
{
	static OFOnceControl onceControl = OFOnceControlInitValue;
	OFMutableIRI *ret = [OFMutableIRI IRIWithScheme: scheme];
	void *pool = objc_autoreleasePoolPush();
	OFString *archiveIRIString;

	OFOnce(&onceControl, initPathAllowedCharacters);

	pathInArchive = [pathInArchive
	    stringByAddingPercentEncodingWithAllowedCharacters:
	    pathAllowedCharacters];
	archiveIRIString = [archiveIRI.string
	    stringByAddingPercentEncodingWithAllowedCharacters:
	    pathAllowedCharacters];

	ret.percentEncodedPath = [OFString
	    stringWithFormat: @"%@!%@", archiveIRIString, pathInArchive];
	    stringWithFormat: @"%@!%@", archiveIRI.string, pathInArchive];
	[ret makeImmutable];

	objc_autoreleasePoolPop(pool);

	return ret;
}