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/* $Id$ */
/*
* Copyright (c) 2008, 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/types.h>
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <stdarg.h>
#include <stdlib.h>
#include "libman.h"
#include "libmandoc.h"
#define CHKARGS struct man *m, const struct man_node *n
typedef int (*v_check)(CHKARGS);
struct man_valid {
v_check *pres;
v_check *posts;
};
static int check_bline(CHKARGS);
static int check_eq0(CHKARGS);
static int check_eq1(CHKARGS);
static int check_ge2(CHKARGS);
static int check_le5(CHKARGS);
static int check_par(CHKARGS);
static int check_part(CHKARGS);
static int check_root(CHKARGS);
static int check_sec(CHKARGS);
static int check_sp(CHKARGS);
static int check_text(CHKARGS);
static v_check posts_eq0[] = { check_eq0, NULL };
static v_check posts_ge2_le5[] = { check_ge2, check_le5, NULL };
static v_check posts_par[] = { check_par, NULL };
static v_check posts_part[] = { check_part, NULL };
static v_check posts_sec[] = { check_sec, NULL };
static v_check posts_sp[] = { check_sp, NULL };
static v_check pres_bline[] = { check_bline, NULL };
static const struct man_valid man_valids[MAN_MAX] = {
{ pres_bline, posts_eq0 }, /* br */
{ pres_bline, posts_ge2_le5 }, /* TH */
{ pres_bline, posts_sec }, /* SH */
{ pres_bline, posts_sec }, /* SS */
{ pres_bline, posts_par }, /* TP */
{ pres_bline, posts_par }, /* LP */
{ pres_bline, posts_par }, /* PP */
{ pres_bline, posts_par }, /* P */
{ pres_bline, posts_par }, /* IP */
{ pres_bline, posts_par }, /* HP */
{ NULL, NULL }, /* SM */
{ NULL, NULL }, /* SB */
{ NULL, NULL }, /* BI */
{ NULL, NULL }, /* IB */
{ NULL, NULL }, /* BR */
{ NULL, NULL }, /* RB */
{ NULL, NULL }, /* R */
{ NULL, NULL }, /* B */
{ NULL, NULL }, /* I */
{ NULL, NULL }, /* IR */
{ NULL, NULL }, /* RI */
{ pres_bline, posts_eq0 }, /* na */
{ NULL, NULL }, /* i */
{ pres_bline, posts_sp }, /* sp */
{ pres_bline, posts_eq0 }, /* nf */
{ pres_bline, posts_eq0 }, /* fi */
{ NULL, NULL }, /* r */
{ NULL, NULL }, /* RE */
{ NULL, posts_part }, /* RS */
{ NULL, NULL }, /* DT */
};
int
man_valid_pre(struct man *m, const struct man_node *n)
{
v_check *cp;
if (MAN_TEXT == n->type)
return(1);
if (MAN_ROOT == n->type)
return(1);
if (NULL == (cp = man_valids[n->tok].pres))
return(1);
for ( ; *cp; cp++)
if ( ! (*cp)(m, n))
return(0);
return(1);
}
int
man_valid_post(struct man *m)
{
v_check *cp;
if (MAN_VALID & m->last->flags)
return(1);
m->last->flags |= MAN_VALID;
switch (m->last->type) {
case (MAN_TEXT):
return(check_text(m, m->last));
case (MAN_ROOT):
return(check_root(m, m->last));
default:
break;
}
if (NULL == (cp = man_valids[m->last->tok].posts))
return(1);
for ( ; *cp; cp++)
if ( ! (*cp)(m, m->last))
return(0);
return(1);
}
static int
check_root(CHKARGS)
{
if (MAN_BLINE & m->flags)
return(man_nwarn(m, n, WEXITSCOPE));
if (MAN_ELINE & m->flags)
return(man_nwarn(m, n, WEXITSCOPE));
m->flags &= ~MAN_BLINE;
m->flags &= ~MAN_ELINE;
if (NULL == m->first->child)
return(man_nerr(m, n, WNODATA));
if (NULL == m->meta.title)
return(man_nerr(m, n, WNOTITLE));
return(1);
}
static int
check_text(CHKARGS)
{
const char *p;
int pos, c;
assert(n->string);
for (p = n->string, pos = n->pos + 1; *p; p++, pos++) {
if ('\\' == *p) {
c = mandoc_special(p);
if (c) {
p += c - 1;
pos += c - 1;
continue;
}
if ( ! (MAN_IGN_ESCAPE & m->pflags))
return(man_perr(m, n->line, pos, WESCAPE));
if ( ! man_pwarn(m, n->line, pos, WESCAPE))
return(0);
continue;
}
if ('\t' == *p || isprint((u_char)*p))
continue;
if (MAN_IGN_CHARS & m->pflags)
return(man_pwarn(m, n->line, pos, WNPRINT));
return(man_perr(m, n->line, pos, WNPRINT));
}
return(1);
}
#define INEQ_DEFINE(x, ineq, name) \
static int \
check_##name(CHKARGS) \
{ \
if (n->nchild ineq (x)) \
return(1); \
return(man_verr(m, n->line, n->pos, \
"expected line arguments %s %d, have %d", \
#ineq, (x), n->nchild)); \
}
INEQ_DEFINE(0, ==, eq0)
INEQ_DEFINE(1, ==, eq1)
INEQ_DEFINE(2, >=, ge2)
INEQ_DEFINE(5, <=, le5)
static int
check_sp(CHKARGS)
{
long lval;
char *ep, *buf;
if (NULL == n->child)
return(1);
else if ( ! check_eq1(m, n))
return(0);
assert(MAN_TEXT == n->child->type);
buf = n->child->string;
assert(buf);
/* From OpenBSD's strtol(3). */
errno = 0;
lval = strtol(buf, &ep, 10);
if (buf[0] == '\0' || *ep != '\0')
return(man_nerr(m, n->child, WNUMFMT));
if ((errno == ERANGE && (lval == LONG_MAX || lval == LONG_MIN)) ||
(lval > INT_MAX || lval < 0))
return(man_nerr(m, n->child, WNUMFMT));
return(1);
}
static int
check_sec(CHKARGS)
{
if (MAN_BODY == n->type && 0 == n->nchild)
return(man_nwarn(m, n, WBODYARGS));
if (MAN_HEAD == n->type && 0 == n->nchild)
return(man_nerr(m, n, WHEADARGS));
return(1);
}
static int
check_part(CHKARGS)
{
if (MAN_BODY == n->type && 0 == n->nchild)
return(man_nwarn(m, n, WBODYARGS));
return(1);
}
static int
check_par(CHKARGS)
{
if (MAN_BODY == n->type)
switch (n->tok) {
case (MAN_IP):
/* FALLTHROUGH */
case (MAN_HP):
/* FALLTHROUGH */
case (MAN_TP):
/* Body-less lists are ok. */
break;
default:
if (n->nchild)
break;
return(man_nwarn(m, n, WBODYARGS));
}
if (MAN_HEAD == n->type)
switch (n->tok) {
case (MAN_PP):
/* FALLTHROUGH */
case (MAN_P):
/* FALLTHROUGH */
case (MAN_LP):
if (0 == n->nchild)
break;
return(man_nwarn(m, n, WNHEADARGS));
default:
if (n->nchild)
break;
return(man_nwarn(m, n, WHEADARGS));
}
return(1);
}
static int
check_bline(CHKARGS)
{
assert( ! (MAN_ELINE & m->flags));
if (MAN_BLINE & m->flags)
return(man_nerr(m, n, WLNSCOPE));
return(1);
}
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