1 /************************************************************************* 2 * 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * Copyright 2000, 2010 Oracle and/or its affiliates. 6 * 7 * OpenOffice.org - a multi-platform office productivity suite 8 * 9 * This file is part of OpenOffice.org. 10 * 11 * OpenOffice.org is free software: you can redistribute it and/or modify 12 * it under the terms of the GNU Lesser General Public License version 3 13 * only, as published by the Free Software Foundation. 14 * 15 * OpenOffice.org is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU Lesser General Public License version 3 for more details 19 * (a copy is included in the LICENSE file that accompanied this code). 20 * 21 * You should have received a copy of the GNU Lesser General Public License 22 * version 3 along with OpenOffice.org. If not, see 23 * <http://www.openoffice.org/license.html> 24 * for a copy of the LGPLv3 License. 25 * 26 ************************************************************************/ 27 28 #include <ctype.h> 29 #include <errno.h> 30 #include <stdio.h> 31 #include <stdlib.h> 32 #include <string.h> 33 34 int main() { 35 for (;;) { 36 int c; 37 errno = 0; 38 c = getchar(); 39 if (c == EOF) { 40 exit(errno == 0 ? EXIT_SUCCESS : EXIT_FAILURE); 41 } else if (isalnum(c) || strchr("!$'()*+,-.:=@_~/\n", c) != NULL) { 42 /* valid RFC 2396 pchar characters + '/' + newline */ 43 if (putchar(c) == EOF) { 44 exit(EXIT_FAILURE); 45 } 46 } else if (printf("%%%02X", (unsigned char) (char) c) < 0) { 47 exit(EXIT_FAILURE); 48 } 49 } 50 } 51