rte_argparse.h

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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2024 HiSilicon Limited
 */
 
#ifndef RTE_ARGPARSE_H
#define RTE_ARGPARSE_H

 
#include <stdbool.h>
#include <stdint.h>
 
#include <rte_bitops.h>
#include <rte_compat.h>
 
#ifdef __cplusplus
extern "C" {
#endif

#define RTE_ARGPARSE_ARG_NO_VALUE       RTE_SHIFT_VAL64(1, 0)
#define RTE_ARGPARSE_ARG_REQUIRED_VALUE RTE_SHIFT_VAL64(2, 0)
#define RTE_ARGPARSE_ARG_OPTIONAL_VALUE RTE_SHIFT_VAL64(3, 0)
#define RTE_ARGPARSE_ARG_VALUE_INT      RTE_SHIFT_VAL64(1, 2)
#define RTE_ARGPARSE_ARG_VALUE_U8       RTE_SHIFT_VAL64(2, 2)
#define RTE_ARGPARSE_ARG_VALUE_U16      RTE_SHIFT_VAL64(3, 2)
#define RTE_ARGPARSE_ARG_VALUE_U32      RTE_SHIFT_VAL64(4, 2)
#define RTE_ARGPARSE_ARG_VALUE_U64      RTE_SHIFT_VAL64(5, 2)
#define RTE_ARGPARSE_ARG_VALUE_MAX      RTE_SHIFT_VAL64(6, 2)
#define RTE_ARGPARSE_ARG_SUPPORT_MULTI  RTE_BIT64(10)
#define RTE_ARGPARSE_ARG_RESERVED_FIELD RTE_GENMASK64(63, 48)

#define RTE_ARGPARSE_HAS_VAL_BITMASK    RTE_GENMASK64(1, 0)
#define RTE_ARGPARSE_VAL_TYPE_BITMASK   RTE_GENMASK64(9, 2)

struct rte_argparse_arg {
    const char *name_long;
    const char *name_short;

    const char *help;

    void *val_saver;
    void *val_set;

    uint64_t flags;
};

typedef int (*rte_arg_parser_t)(uint32_t index, const char *value, void *opaque);

struct rte_argparse {
    const char *prog_name;
    const char *usage;
    const char *descriptor;
    const char *epilog;
    bool exit_on_error;
    rte_arg_parser_t callback;
    void *opaque;
    void *reserved[16];
    struct rte_argparse_arg args[];
};
 
#define ARGPARSE_ARG_END() { NULL }

__rte_experimental
int rte_argparse_parse(struct rte_argparse *obj, int argc, char **argv);

__rte_experimental
int rte_argparse_parse_type(const char *str, uint64_t val_type, void *val);
 
#ifdef __cplusplus
}
#endif
 
#endif /* RTE_ARGPARSE_H */