args.h

   1 /*
   2  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
   3  *
   4  *  Use of this source code is governed by a BSD-style license
   5  *  that can be found in the LICENSE file in the root of the source
   6  *  tree. An additional intellectual property rights grant can be found
   7  *  in the file PATENTS.  All contributing project authors may
   8  *  be found in the AUTHORS file in the root of the source tree.
   9  */
  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 {0}
  33
  34 typedef struct arg_def {
  35   const char *short_name;
  36   const char *long_name;
  37   int         has_val;
  38   const char *desc;
  39   const struct arg_enum_list *enums;
  40 } arg_def_t;
  41 #define ARG_DEF(s,l,v,d) {s,l,v,d, NULL}
  42 #define ARG_DEF_ENUM(s,l,v,d,e) {s,l,v,d,e}
  43 #define ARG_DEF_LIST_END {0}
  44
  45 struct arg arg_init(char **argv);
  46 int arg_match(struct arg *arg_, const struct arg_def *def, char **argv);
  47 const char *arg_next(struct arg *arg);
  48 void arg_show_usage(FILE *fp, const struct arg_def *const *defs);
  49 char **argv_dup(int argc, const char **argv);
  50
  51 unsigned int arg_parse_uint(const struct arg *arg);
  52 int arg_parse_int(const struct arg *arg);
  53 struct vpx_rational arg_parse_rational(const struct arg *arg);
  54 int arg_parse_enum(const struct arg *arg);
  55 int arg_parse_enum_or_int(const struct arg *arg);
  56 #ifdef __cplusplus
  57 }  // extern "C"
  58 #endif
  59
  60 #endif  // ARGS_H_