xref: /aoo41x/main/shell/source/unix/misc/uri-encode.c (revision badc9ebb)
1 /**************************************************************
2  *
3  * Licensed to the Apache Software Foundation (ASF) under one
4  * or more contributor license agreements.  See the NOTICE file
5  * distributed with this work for additional information
6  * regarding copyright ownership.  The ASF licenses this file
7  * to you under the Apache License, Version 2.0 (the
8  * "License"); you may not use this file except in compliance
9  * with the License.  You may obtain a copy of the License at
10  *
11  *   http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing,
14  * software distributed under the License is distributed on an
15  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16  * KIND, either express or implied.  See the License for the
17  * specific language governing permissions and limitations
18  * under the License.
19  *
20  *************************************************************/
21 
22 
23 
24 #include <ctype.h>
25 #include <errno.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <string.h>
29 
main()30 int main() {
31     for (;;) {
32         int c;
33         errno = 0;
34         c = getchar();
35         if (c == EOF) {
36             exit(errno == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
37         } else if (isalnum(c) || strchr("!$'()*+,-.:=@_~/\n", c) != NULL) {
38             /* valid RFC 2396 pchar characters + '/' + newline */
39             if (putchar(c) == EOF) {
40                 exit(EXIT_FAILURE);
41             }
42         } else if (printf("%%%02X", (unsigned char) (char) c) < 0) {
43             exit(EXIT_FAILURE);
44         }
45     }
46 }
47