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/* $Id: tbl_opts.c,v 1.17 2015/01/26 00:57:22 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 "config.h"
#include <sys/types.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mandoc.h"
#include "libmandoc.h"
#include "libroff.h"
enum tbl_ident {
KEY_CENTRE = 0,
KEY_DELIM,
KEY_EXPAND,
KEY_BOX,
KEY_DBOX,
KEY_ALLBOX,
KEY_TAB,
KEY_LINESIZE,
KEY_NOKEEP,
KEY_DPOINT,
KEY_NOSPACE,
KEY_FRAME,
KEY_DFRAME,
KEY_MAX
};
struct tbl_phrase {
const char *name;
int key;
enum tbl_ident ident;
};
/* Handle Commonwealth/American spellings. */
#define KEY_MAXKEYS 14
static const struct tbl_phrase keys[KEY_MAXKEYS] = {
{ "center", TBL_OPT_CENTRE, KEY_CENTRE},
{ "centre", TBL_OPT_CENTRE, KEY_CENTRE},
{ "delim", 0, KEY_DELIM},
{ "expand", TBL_OPT_EXPAND, KEY_EXPAND},
{ "box", TBL_OPT_BOX, KEY_BOX},
{ "doublebox", TBL_OPT_DBOX, KEY_DBOX},
{ "allbox", TBL_OPT_ALLBOX, KEY_ALLBOX},
{ "frame", TBL_OPT_BOX, KEY_FRAME},
{ "doubleframe", TBL_OPT_DBOX, KEY_DFRAME},
{ "tab", 0, KEY_TAB},
{ "linesize", 0, KEY_LINESIZE},
{ "nokeep", TBL_OPT_NOKEEP, KEY_NOKEEP},
{ "decimalpoint", 0, KEY_DPOINT},
{ "nospaces", TBL_OPT_NOSPACE, KEY_NOSPACE},
};
static void arg(struct tbl_node *, int,
const char *, int *, enum tbl_ident);
static void
arg(struct tbl_node *tbl, int ln, const char *p, int *pos, enum tbl_ident key)
{
const char *optname;
int len, want;
while (isspace((unsigned char)p[*pos]))
(*pos)++;
/* Arguments are enclosed in parentheses. */
len = 0;
if (p[*pos] == '(') {
(*pos)++;
while (p[*pos + len] != ')')
len++;
}
switch (key) {
case KEY_DELIM:
optname = "delim";
want = 2;
break;
case KEY_TAB:
optname = "tab";
want = 1;
if (len == want)
tbl->opts.tab = p[*pos];
break;
case KEY_LINESIZE:
optname = "linesize";
want = 0;
break;
case KEY_DPOINT:
optname = "decimalpoint";
want = 1;
if (len == want)
tbl->opts.decimal = p[*pos];
break;
default:
abort();
/* NOTREACHED */
}
if (len == 0)
mandoc_msg(MANDOCERR_TBLOPT_NOARG,
tbl->parse, ln, *pos, optname);
else if (want && len != want)
mandoc_vmsg(MANDOCERR_TBLOPT_ARGSZ,
tbl->parse, ln, *pos,
"%s want %d have %d", optname, 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 i, pos, len;
pos = 0;
for (;;) {
while (isspace((unsigned char)p[pos]) || p[pos] == ',')
pos++;
if (p[pos] == ';')
return;
/* Parse one option name. */
len = 0;
while (isalpha((unsigned char)p[pos + len]))
len++;
if (len == 0) {
mandoc_vmsg(MANDOCERR_TBLOPT_ALPHA,
tbl->parse, 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_vmsg(MANDOCERR_TBLOPT_BAD, tbl->parse,
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, keys[i].ident);
}
}
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