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/* $Id: tbl_option.c,v 1.2 2010/10/15 21:33:47 schwarze Exp $ */
/*
* Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se>
*
* 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/queue.h>
#include <stdlib.h>
#include <string.h>
#include "out.h"
#include "term.h"
#include "tbl_extern.h"
struct tbl_phrase {
char *name;
int key;
int ident;
#define KEY_CENTRE 0
#define KEY_DELIM 1
#define KEY_EXPAND 2
#define KEY_BOX 3
#define KEY_DBOX 4
#define KEY_ALLBOX 5
#define KEY_TAB 6
#define KEY_LINESIZE 7
#define KEY_NOKEEP 8
#define KEY_DPOINT 9
#define KEY_NOSPACE 10
#define KEY_FRAME 11
#define KEY_DFRAME 12
};
#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 int arg(struct tbl *, const char *,
int, const char *, int *, int);
static int opt(struct tbl *, const char *,
int, const char *, int *);
static int
arg(struct tbl *tbl, const char *f, int ln,
const char *p, int *pos, int key)
{
const char *buf;
int sv;
again:
sv = *pos;
switch (tbl_next(p, pos)) {
case (TBL_TOK_OPENPAREN):
break;
case (TBL_TOK_SPACE):
/* FALLTHROUGH */
case (TBL_TOK_TAB):
goto again;
default:
return(tbl_errx(tbl, ERR_SYNTAX, f, ln, sv));
}
sv = *pos;
switch (tbl_next(p, pos)) {
case (TBL_TOK_WORD):
break;
default:
return(tbl_errx(tbl, ERR_SYNTAX, f, ln, sv));
}
buf = tbl_last();
switch (key) {
case (KEY_DELIM):
if (2 != strlen(buf))
return(tbl_errx(tbl, ERR_SYNTAX, f, ln, sv));
tbl->delims[0] = buf[0];
tbl->delims[1] = buf[1];
break;
case (KEY_TAB):
if (1 != strlen(buf))
return(tbl_errx(tbl, ERR_SYNTAX, f, ln, sv));
tbl->tab = buf[0];
break;
case (KEY_LINESIZE):
if (-1 == (tbl->linesize = tbl_last_uint()))
return(tbl_errx(tbl, ERR_SYNTAX, f, ln, sv));
break;
case (KEY_DPOINT):
if (1 != strlen(buf))
return(tbl_errx(tbl, ERR_SYNTAX, f, ln, sv));
tbl->decimal = buf[0];
break;
default:
abort();
}
sv = *pos;
switch (tbl_next(p, pos)) {
case (TBL_TOK_CLOSEPAREN):
break;
default:
return(tbl_errx(tbl, ERR_SYNTAX, f, ln, sv));
}
return(1);
}
static int
opt(struct tbl *tbl, const char *f, int ln, const char *p, int *pos)
{
int i, sv;
again:
sv = *pos;
/*
* EBNF describing this section:
*
* options ::= option_list [:space:]* [;][\n]
* option_list ::= option option_tail
* option_tail ::= [:space:]+ option_list |
* ::= epsilon
* option ::= [:alpha:]+ args
* args ::= [:space:]* [(] [:alpha:]+ [)]
*/
switch (tbl_next(p, pos)) {
case (TBL_TOK_WORD):
break;
case (TBL_TOK_SPACE):
/* FALLTHROUGH */
case (TBL_TOK_TAB):
goto again;
case (TBL_TOK_SEMICOLON):
tbl->part = TBL_PART_LAYOUT;
return(1);
default:
return(tbl_errx(tbl, ERR_SYNTAX, f, ln, sv));
}
for (i = 0; i < KEY_MAXKEYS; i++) {
if (strcasecmp(tbl_last(), keys[i].name))
continue;
if (keys[i].key)
tbl->opts |= keys[i].key;
else if ( ! arg(tbl, f, ln, p, pos, keys[i].ident))
return(0);
break;
}
if (KEY_MAXKEYS == i)
return(tbl_errx(tbl, ERR_OPTION, f, ln, sv));
return(opt(tbl, f, ln, p, pos));
}
int
tbl_option(struct tbl *tbl, const char *f, int ln, const char *p)
{
int pos;
pos = 0;
return(opt(tbl, f, ln, p, &pos));
}
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