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/* $OpenBSD: tbl_opts.c,v 1.16 2018/12/14 05:17:45 schwarze Exp $ */
/*
* Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 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 <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mandoc.h"
#include "tbl.h"
#include "libmandoc.h"
#include "tbl_int.h"
#define KEY_DPOINT 0
#define KEY_DELIM 1
#define KEY_LINESIZE 2
#define KEY_TAB 3
struct tbl_phrase {
const char *name;
int key;
};
static const struct tbl_phrase keys[] = {
{"decimalpoint", 0},
{"delim", 0},
{"linesize", 0},
{"tab", 0},
{"allbox", TBL_OPT_ALLBOX | TBL_OPT_BOX},
{"box", TBL_OPT_BOX},
{"frame", TBL_OPT_BOX},
{"center", TBL_OPT_CENTRE},
{"centre", TBL_OPT_CENTRE},
{"doublebox", TBL_OPT_DBOX},
{"doubleframe", TBL_OPT_DBOX},
{"expand", TBL_OPT_EXPAND},
{"nokeep", TBL_OPT_NOKEEP},
{"nospaces", TBL_OPT_NOSPACE},
{"nowarn", TBL_OPT_NOWARN},
};
#define KEY_MAXKEYS ((int)(sizeof(keys)/sizeof(keys[0])))
static void arg(struct tbl_node *, int, const char *, int *, int);
static void
arg(struct tbl_node *tbl, int ln, const char *p, int *pos, int key)
{
int len, want;
while (p[*pos] == ' ' || p[*pos] == '\t')
(*pos)++;
/* Arguments are enclosed in parentheses. */
len = 0;
if (p[*pos] == '(') {
(*pos)++;
while (p[*pos + len] != ')')
len++;
}
switch (key) {
case KEY_DELIM:
mandoc_msg(MANDOCERR_TBLOPT_EQN,
ln, *pos, "%.*s", len, p + *pos);
want = 2;
break;
case KEY_TAB:
want = 1;
if (len == want)
tbl->opts.tab = p[*pos];
break;
case KEY_LINESIZE:
want = 0;
break;
case KEY_DPOINT:
want = 1;
if (len == want)
tbl->opts.decimal = p[*pos];
break;
default:
abort();
}
if (len == 0)
mandoc_msg(MANDOCERR_TBLOPT_NOARG, ln, *pos,
"%s", keys[key].name);
else if (want && len != want)
mandoc_msg(MANDOCERR_TBLOPT_ARGSZ, ln, *pos,
"%s want %d have %d", keys[key].name, want, len);
*pos += len;
if (p[*pos] == ')')
(*pos)++;
}
/*
* Parse one line of options up to the semicolon.
* Each option can be preceded by blanks and/or commas,
* and some options are followed by arguments.
*/
void
tbl_option(struct tbl_node *tbl, int ln, const char *p, int *offs)
{
int i, pos, len;
pos = *offs;
for (;;) {
while (p[pos] == ' ' || p[pos] == '\t' || p[pos] == ',')
pos++;
if (p[pos] == ';') {
*offs = pos + 1;
return;
}
/* Parse one option name. */
len = 0;
while (isalpha((unsigned char)p[pos + len]))
len++;
if (len == 0) {
mandoc_msg(MANDOCERR_TBLOPT_ALPHA,
ln, pos, "%c", p[pos]);
pos++;
continue;
}
/* Look up the option name. */
i = 0;
while (i < KEY_MAXKEYS &&
(strncasecmp(p + pos, keys[i].name, len) ||
keys[i].name[len] != '\0'))
i++;
if (i == KEY_MAXKEYS) {
mandoc_msg(MANDOCERR_TBLOPT_BAD,
ln, pos, "%.*s", len, p + pos);
pos += len;
continue;
}
/* Handle the option. */
pos += len;
if (keys[i].key)
tbl->opts.opts |= keys[i].key;
else
arg(tbl, ln, p, &pos, i);
}
}
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