#pragma once
#include <stdio.h>
#include <stdbool.h>

typedef struct {
    FILE *in; // stdin stream for reading further command data
    FILE *out; // stdout stream for command results
    
    /* Rest of the fields are filled in during command execution. */
    const char *cmd; // command name
    char *saveptr; // argument to strtok_r for fetching command arguments
    int status; // numeric result status of command
} cmdargs_t;

bool cmd_string_arg(cmdargs_t *args, char **dest);
bool cmd_signed_arg(cmdargs_t *args, signed *dest);
bool cmd_unsigned_arg(cmdargs_t *args, unsigned *dest);
bool cmd_last_arg(cmdargs_t *args);
void cmd_result(cmdargs_t *args, int status, const char *info);
void cmd_resultf(cmdargs_t *args, int status, const char *info, ...);

void cmd_run(cmdargs_t *args, char *cmdline);
void cmd_chat(FILE *stream, int cmdbuf_size);