1 /* 2 * Copyright 2022 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <errno.h> 20 #include <stdio.h> 21 22 #ifdef __cplusplus 23 extern "C" { 24 #endif 25 26 #define ARGP_ERR_UNKNOWN -1 27 28 #define ARGP_HELP_STD_HELP 0 29 30 #define ARGP_KEY_ARG '\0' 31 #define ARGP_KEY_END 256 32 33 #define OPTION_HIDDEN 1 34 35 struct argp_option { 36 const char *name; 37 const int key; 38 const char *argname; 39 int n; 40 const char *docstring; 41 }; 42 43 struct argp_state { 44 int arg_num; 45 void *input; 46 const struct argp *argp; 47 }; 48 49 typedef int error_t; 50 51 struct argp { 52 const struct argp_option *options; 53 error_t (*parser)(int key, char *arg, struct argp_state *state); 54 const char *doc; 55 const char *args_doc; 56 }; 57 58 error_t argp_parse(const struct argp *argp, int argc, char **argv, int, void*, void*); 59 void argp_usage(struct argp_state*); 60 void argp_state_help(struct argp_state*, FILE *fd, int); 61 62 #ifdef __cplusplus 63 } 64 #endif 65