args.h

   1 /*
   2  * Copyright (c) 2016, Alliance for Open Media. All rights reserved
   3  *
   4  * This source code is subject to the terms of the BSD 2 Clause License and
   5  * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
   6  * was not distributed with this source code in the LICENSE file, you can
   7  * obtain it at www.aomedia.org/license/software. If the Alliance for Open
   8  * Media Patent License 1.0 was not distributed with this source code in the
   9  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
  10  */
  11
  12 #ifndef ARGS_H_
  13 #define ARGS_H_
  14 #include <stdio.h>
  15
  16 #ifdef __cplusplus
  17 extern "C" {
  18 #endif
  19
  20 struct arg {
  21   char **argv;
  22   const char *name;
  23   const char *val;
  24   unsigned int argv_step;
  25   const struct arg_def *def;
  26 };
  27
  28 struct arg_enum_list {
  29   const char *name;
  30   int val;
  31 };
  32 #define ARG_ENUM_LIST_END \
  33   { 0 }
  34
  35 typedef struct arg_def {
  36   const char *short_name;
  37   const char *long_name;
  38   int has_val;
  39   const char *desc;
  40   const struct arg_enum_list *enums;
  41 } arg_def_t;
  42 #define ARG_DEF(s, l, v, d) \
  43   { s, l, v, d, NULL }
  44 #define ARG_DEF_ENUM(s, l, v, d, e) \
  45   { s, l, v, d, e }
  46 #define ARG_DEF_LIST_END \
  47   { 0 }
  48
  49 struct arg arg_init(char **argv);
  50 int arg_match(struct arg *arg_, const struct arg_def *def, char **argv);
  51 const char *arg_next(struct arg *arg);
  52 void arg_show_usage(FILE *fp, const struct arg_def *const *defs);
  53 char **argv_dup(int argc, const char **argv);
  54
  55 unsigned int arg_parse_uint(const struct arg *arg);
  56 int arg_parse_int(const struct arg *arg);
  57 struct aom_rational arg_parse_rational(const struct arg *arg);
  58 int arg_parse_enum(const struct arg *arg);
  59 int arg_parse_enum_or_int(const struct arg *arg);
  60 int arg_parse_list(const struct arg *arg, int *list, int n);
  61 #ifdef __cplusplus
  62 }  // extern "C"
  63 #endif
  64
  65 #endif  // ARGS_H_