/*
 * Copyright (c) 2026, Chloe M.
 * Provided under the BSD-3 clause
 */

#include <stdint.h>
#include <stddef.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include "cescal/state.h"

int
state_init(struct cescal_state *state, const char *pathname)
{
    if (state == NULL || pathname == NULL) {
        errno = EINVAL;
        return -1;
    }

    memset(state, 0, sizeof(*state));
    state->in_fd = open(pathname, O_RDONLY);
    if (state->in_fd < 0) {
        return -1;
    }

    if (readbuf_init(&state->rb) < 0) {
        close(state->in_fd);
        return -1;
    }

    if (tokbuf_init(&state->tokbuf) < 0) {
        close(state->in_fd);
        return -1;
    }

    if (ptrbox_init(&state->ptrbox) < 0) {
        close(state->in_fd);
        return -1;
    }

    return 0;
}

void
state_close(struct cescal_state *state)
{
    close(state->in_fd);
    state->in_fd = -1;
    ptrbox_destroy(&state->ptrbox);
    tokbuf_destroy(&state->tokbuf);
}