/*      $OpenBSD: tbl.c,v 1.28 2025/01/05 18:03:51 schwarze Exp $ */
/*
 * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 * Copyright (c) 2011, 2015 Ingo Schwarze <schwarze@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#include <sys/types.h>

#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#include "mandoc_aux.h"
#include "mandoc.h"
#include "tbl.h"
#include "libmandoc.h"
#include "tbl_parse.h"
#include "tbl_int.h"


void
tbl_read(struct tbl_node *tbl, int ln, const char *p, int pos)
{
        const char      *cp;
        int              active;

        /*
         * In the options section, proceed to the layout section
         * after a semicolon, or right away if there is no semicolon.
         * Ignore semicolons in arguments.
         */

        if (tbl->part == TBL_PART_OPTS) {
                tbl->part = TBL_PART_LAYOUT;
                active = 1;
                for (cp = p + pos; *cp != '\0'; cp++) {
                        switch (*cp) {
                        case '(':
                                active = 0;
                                continue;
                        case ')':
                                active = 1;
                                continue;
                        case ';':
                                if (active)
                                        break;
                                continue;
                        default:
                                continue;
                        }
                        break;
                }
                if (*cp == ';') {
                        tbl_option(tbl, ln, p, &pos);
                        if (p[pos] == '\0')
                                return;
                }
        }

        /* Process the other section types.  */

        switch (tbl->part) {
        case TBL_PART_LAYOUT:
                tbl_layout(tbl, ln, p, pos);
                break;
        case TBL_PART_CDATA:
                tbl_cdata(tbl, ln, p, pos);
                break;
        default:
                tbl_data(tbl, ln, p, pos);
                break;
        }
}

struct tbl_node *
tbl_alloc(int pos, int line, struct tbl_node *last_tbl)
{
        struct tbl_node *tbl;

        tbl = mandoc_calloc(1, sizeof(*tbl));
        if (last_tbl != NULL)
                last_tbl->next = tbl;
        tbl->line = line;
        tbl->pos = pos;
        tbl->part = TBL_PART_OPTS;
        tbl->opts.tab = '\t';
        tbl->opts.decimal = '.';
        return tbl;
}

void
tbl_free(struct tbl_node *tbl)
{
        struct tbl_node *old_tbl;
        struct tbl_row  *rp;
        struct tbl_cell *cp;
        struct tbl_span *sp;
        struct tbl_dat  *dp;

        while (tbl != NULL) {
                while ((rp = tbl->first_row) != NULL) {
                        tbl->first_row = rp->next;
                        while (rp->first != NULL) {
                                cp = rp->first;
                                rp->first = cp->next;
                                free(cp);
                        }
                        free(rp);
                }
                while ((sp = tbl->first_span) != NULL) {
                        tbl->first_span = sp->next;
                        while (sp->first != NULL) {
                                dp = sp->first;
                                sp->first = dp->next;
                                free(dp->string);
                                free(dp);
                        }
                        free(sp);
                }
                old_tbl = tbl;
                tbl = tbl->next;
                free(old_tbl);
        }
}

void
tbl_restart(int line, int pos, struct tbl_node *tbl)
{
        if (tbl->part == TBL_PART_CDATA)
                mandoc_msg(MANDOCERR_TBLDATA_BLK, line, pos, "T&");

        tbl->part = TBL_PART_LAYOUT;
        tbl->line = line;
        tbl->pos = pos;
}

struct tbl_span *
tbl_span(struct tbl_node *tbl)
{
        struct tbl_span  *span;

        span = tbl->current_span ? tbl->current_span->next
                                 : tbl->first_span;
        if (span != NULL)
                tbl->current_span = span;
        return span;
}

int
tbl_end(struct tbl_node *tbl, int still_open)
{
        struct tbl_span *sp;

        if (still_open)
                mandoc_msg(MANDOCERR_BLK_NOEND, tbl->line, tbl->pos, "TS");
        else if (tbl->part == TBL_PART_CDATA)
                mandoc_msg(MANDOCERR_TBLDATA_BLK, tbl->line, tbl->pos, "TE");

        sp = tbl->first_span;
        while (sp != NULL && sp->first == NULL)
                sp = sp->next;
        if (sp == NULL) {
                mandoc_msg(MANDOCERR_TBLDATA_NONE, tbl->line, tbl->pos, NULL);
                return 0;
        }
        return 1;
}