args.h 1.59 KB
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/*
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 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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 *
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 *  Use of this source code is governed by a BSD-style license
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 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
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 *  in the file PATENTS.  All contributing project authors may
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 *  be found in the AUTHORS file in the root of the source tree.
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 */


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#ifndef ARGS_H_
#define ARGS_H_
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#include <stdio.h>

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#ifdef __cplusplus
extern "C" {
#endif

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struct arg {
  char                 **argv;
  const char            *name;
  const char            *val;
  unsigned int           argv_step;
  const struct arg_def  *def;
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};

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struct arg_enum_list {
  const char *name;
  int         val;
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};
#define ARG_ENUM_LIST_END {0}

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typedef struct arg_def {
  const char *short_name;
  const char *long_name;
  int         has_val;
  const char *desc;
  const struct arg_enum_list *enums;
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} arg_def_t;
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#define ARG_DEF(s,l,v,d) {s,l,v,d, NULL}
#define ARG_DEF_ENUM(s,l,v,d,e) {s,l,v,d,e}
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#define ARG_DEF_LIST_END {0}

struct arg arg_init(char **argv);
int arg_match(struct arg *arg_, const struct arg_def *def, char **argv);
const char *arg_next(struct arg *arg);
void arg_show_usage(FILE *fp, const struct arg_def *const *defs);
char **argv_dup(int argc, const char **argv);

unsigned int arg_parse_uint(const struct arg *arg);
int arg_parse_int(const struct arg *arg);
struct vpx_rational arg_parse_rational(const struct arg *arg);
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int arg_parse_enum(const struct arg *arg);
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int arg_parse_enum_or_int(const struct arg *arg);
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#ifdef __cplusplus
}  // extern "C"
#endif

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#endif  // ARGS_H_