// -*- mode: c; tab-width: 4; indent-tabs-mode: nil; st-rulers: [132] -*-
// vim: ts=4 sw=4 ft=c et

#ifndef LIBSODIUM_DRV_COMMON_H
#define LIBSODIUM_DRV_COMMON_H

#include <sys/types.h>
#include <erl_driver.h>
#include <ei.h>
#include <unistd.h>
#include <inttypes.h>
#include <string.h>
#include <stdio.h>
#include <sodium.h>

extern int erts_fprintf(FILE *, const char *, ...);

// #define TRACE	1
#ifdef TRACE
#define TRACE_C(c)                                                                                                                 \
    do {                                                                                                                           \
        putchar(c);                                                                                                                \
        fflush(stdout);                                                                                                            \
    } while (0)
#define TRACE_S(s)                                                                                                                 \
    do {                                                                                                                           \
        fputs((s), stdout);                                                                                                        \
        fflush(stdout);                                                                                                            \
    } while (0)
#define TRACE_F(...) erts_fprintf(stderr, __VA_ARGS__)
#else
#define TRACE_C(c) ((void)(0))
#define TRACE_S(s) ((void)(0))
#define TRACE_F(...) ((void)(0))
#endif

/* common */
typedef struct libsodium_drv_term_data {
    ErlDrvTermData am_ok;
    ErlDrvTermData am_error;
    ErlDrvTermData am_undefined;

} libsodium_drv_term_data_t;

extern libsodium_drv_term_data_t *libsodium_drv;
extern ErlDrvMutex *libsodium_mutex;

#define LS_ATOM(NAME) (ErlDrvTermData)(libsodium_drv->am_##NAME)
#define LS_STRING(NAME) (char *)(libsodium_drv->str_##NAME)

#define LS_FAIL_BADSPEC(PORT) (void)(driver_failure_atom(PORT, "bad_spec"))
#define LS_FAIL_OOM(PORT) (void)(driver_failure_atom(PORT, "out_of_memory"))

#endif