1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #pragma once 30 31 #include <sys/cdefs.h> 32 33 __BEGIN_DECLS 34 35 /** 36 * [getopt(3)](http://man7.org/linux/man-pages/man3/getopt.3.html) parses command-line options. 37 * 38 * Returns the next option character on success, returns -1 if all options have been parsed, and 39 * returns `'?'` on error. 40 */ 41 int getopt(int __argc, char* const __argv[], const char* __options); 42 43 /** 44 * Points to the text of the corresponding value for options that take an argument. 45 */ 46 extern char* optarg; 47 48 /** 49 * The index of the next element to be processed. 50 * On Android, callers should set `optreset = 1` rather than trying to reset `optind` to 51 * scan a new argument vector. 52 */ 53 extern int optind; 54 55 /** 56 * Determines whether getopt() outputs error messages. 57 * Callers should set this to `0` to disable error messages. 58 * Defaults to non-zero. 59 */ 60 extern int opterr; 61 62 /** 63 * The last unrecognized option character, valid when getopt() returns `'?'`. 64 */ 65 extern int optopt; 66 67 __END_DECLS 68
