[BACK]Return to man_validate.c CVS log [TXT][DIR] Up to [cvsweb.bsd.lv] / mandoc

File: [cvsweb.bsd.lv] / mandoc / man_validate.c (download)

Revision 1.69, Wed Apr 13 09:57:08 2011 UTC (10 years, 3 months ago) by kristaps
Branch: MAIN
CVS Tags: VERSION_1_11_3, VERSION_1_11_2
Changes since 1.68: +5 -8 lines

Remove the warning for empty bodies of `Sh', `Ss', `SH', and `SS'.  This
prompted by a TODO by schwarze@, originally from Gleydson Soares, that
an empty `SS' was raising an error (it hasn't for some time).  It makes
sense these shouldn't warn, as omitting their contents doesn't change
anything in the structure of the document (groff and mandoc specifically
account for the whitespace between empty sections).

This doesn't change any manuals, which only refer to the line arguments
(or possibly next-line, in the case of man(7) syntax).

/*	$Id: man_validate.c,v 1.69 2011/04/13 09:57:08 kristaps Exp $ */
/*
 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 * Copyright (c) 2010 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.
 */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <sys/types.h>

#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#include "man.h"
#include "mandoc.h"
#include "libman.h"
#include "libmandoc.h"

#define	CHKARGS	  struct man *m, 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_ft(CHKARGS);
static	int	  check_le1(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	void	  check_text(CHKARGS);

static	int	  post_AT(CHKARGS);
static	int	  post_fi(CHKARGS);
static	int	  post_nf(CHKARGS);
static	int	  post_TH(CHKARGS);
static	int	  post_UC(CHKARGS);

static	v_check	  posts_at[] = { post_AT, NULL };
static	v_check	  posts_eq0[] = { check_eq0, NULL };
static	v_check	  posts_fi[] = { check_eq0, post_fi, NULL };
static	v_check	  posts_le1[] = { check_le1, NULL };
static	v_check	  posts_ft[] = { check_ft, NULL };
static	v_check	  posts_nf[] = { check_eq0, post_nf, 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_th[] = { check_ge2, check_le5, post_TH, NULL };
static	v_check	  posts_uc[] = { post_UC, NULL };
static	v_check	  pres_bline[] = { check_bline, NULL };


static	const struct man_valid man_valids[MAN_MAX] = {
	{ NULL, posts_eq0 }, /* br */
	{ pres_bline, posts_th }, /* TH */
	{ pres_bline, posts_sec }, /* SH */
	{ pres_bline, posts_sec }, /* SS */
	{ pres_bline, NULL }, /* TP */
	{ pres_bline, posts_par }, /* LP */
	{ pres_bline, posts_par }, /* PP */
	{ pres_bline, posts_par }, /* P */
	{ pres_bline, NULL }, /* IP */
	{ pres_bline, NULL }, /* 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 */
	{ NULL, posts_eq0 }, /* na */ /* FIXME: should warn only. */
	{ NULL, posts_le1 }, /* sp */ /* FIXME: should warn only. */
	{ pres_bline, posts_nf }, /* nf */
	{ pres_bline, posts_fi }, /* fi */
	{ NULL, NULL }, /* RE */
	{ NULL, posts_part }, /* RS */
	{ NULL, NULL }, /* DT */
	{ NULL, posts_uc }, /* UC */
	{ NULL, NULL }, /* PD */
	{ NULL, posts_at }, /* AT */
	{ NULL, NULL }, /* in */
	{ NULL, posts_ft }, /* ft */
};


int
man_valid_pre(struct man *m, struct man_node *n)
{
	v_check		*cp;

	switch (n->type) {
	case (MAN_TEXT):
		/* FALLTHROUGH */
	case (MAN_ROOT):
		/* FALLTHROUGH */
	case (MAN_EQN):
		/* FALLTHROUGH */
	case (MAN_TBL):
		return(1);
	default:
		break;
	}

	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): 
		check_text(m, m->last);
		return(1);
	case (MAN_ROOT):
		return(check_root(m, m->last));
	case (MAN_EQN):
		/* FALLTHROUGH */
	case (MAN_TBL):
		return(1);
	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)
		man_nmsg(m, n, MANDOCERR_SCOPEEXIT);
	else if (MAN_ELINE & m->flags)
		man_nmsg(m, n, MANDOCERR_SCOPEEXIT);

	m->flags &= ~MAN_BLINE;
	m->flags &= ~MAN_ELINE;

	if (NULL == m->first->child) {
		man_nmsg(m, n, MANDOCERR_NODOCBODY);
		return(0);
	} else if (NULL == m->meta.title) {
		man_nmsg(m, n, MANDOCERR_NOTITLE);

		/*
		 * If a title hasn't been set, do so now (by
		 * implication, date and section also aren't set).
		 */

	        m->meta.title = mandoc_strdup("unknown");
		m->meta.msec = mandoc_strdup("1");
		m->meta.date = mandoc_normdate
			(m->parse, NULL, n->line, n->pos);
	}

	return(1);
}

static void
check_text(CHKARGS) 
{
	char		*p, *pp, *cpp;
	int		 pos;
	size_t		 sz;

	p = n->string;
	pos = n->pos + 1;

	while ('\0' != *p) {
		sz = strcspn(p, "\t\\");

		p += (int)sz;
		pos += (int)sz;

		if ('\t' == *p) {
			if ( ! (MAN_LITERAL & m->flags))
				man_pmsg(m, n->line, pos, MANDOCERR_BADTAB);
			p++;
			pos++;
			continue;
		} else if ('\0' == *p)
			break;

		pos++;
		pp = ++p;

		if (ESCAPE_ERROR == mandoc_escape
				((const char **)&pp, NULL, NULL)) {
			man_pmsg(m, n->line, pos, MANDOCERR_BADESCAPE);
			break;
		}

		cpp = p;
		while (NULL != (cpp = memchr(cpp, ASCII_HYPH, pp - cpp)))
			*cpp = '-';

		pos += pp - p;
		p = pp;
	}
}

#define	INEQ_DEFINE(x, ineq, name) \
static int \
check_##name(CHKARGS) \
{ \
	if (n->nchild ineq (x)) \
		return(1); \
	mandoc_vmsg(MANDOCERR_ARGCOUNT, m->parse, n->line, n->pos, \
			"line arguments %s %d (have %d)", \
			#ineq, (x), n->nchild); \
	return(1); \
}

INEQ_DEFINE(0, ==, eq0)
INEQ_DEFINE(1, <=, le1)
INEQ_DEFINE(2, >=, ge2)
INEQ_DEFINE(5, <=, le5)

static int
check_ft(CHKARGS)
{
	char	*cp;
	int	 ok;

	if (0 == n->nchild)
		return(1);

	ok = 0;
	cp = n->child->string;
	switch (*cp) {
	case ('1'):
		/* FALLTHROUGH */
	case ('2'):
		/* FALLTHROUGH */
	case ('3'):
		/* FALLTHROUGH */
	case ('4'):
		/* FALLTHROUGH */
	case ('I'):
		/* FALLTHROUGH */
	case ('P'):
		/* FALLTHROUGH */
	case ('R'):
		if ('\0' == cp[1])
			ok = 1;
		break;
	case ('B'):
		if ('\0' == cp[1] || ('I' == cp[1] && '\0' == cp[2]))
			ok = 1;
		break;
	case ('C'):
		if ('W' == cp[1] && '\0' == cp[2])
			ok = 1;
		break;
	default:
		break;
	}

	if (0 == ok) {
		mandoc_vmsg
			(MANDOCERR_BADFONT, m->parse,
			 n->line, n->pos, "%s", cp);
		*cp = '\0';
	}

	if (1 < n->nchild)
		mandoc_vmsg
			(MANDOCERR_ARGCOUNT, m->parse, n->line, 
			 n->pos, "want one child (have %d)", 
			 n->nchild);

	return(1);
}

static int
check_sec(CHKARGS)
{

	if ( ! (MAN_HEAD == n->type && 0 == n->nchild)) 
		return(1);

	man_nmsg(m, n, MANDOCERR_SYNTARGCOUNT);
	return(0);
}


static int
check_part(CHKARGS)
{

	if (MAN_BODY == n->type && 0 == n->nchild)
		mandoc_msg(MANDOCERR_ARGCWARN, m->parse, n->line, 
				n->pos, "want children (have none)");

	return(1);
}


static int
check_par(CHKARGS)
{

	switch (n->type) {
	case (MAN_BLOCK):
		if (0 == n->body->nchild)
			man_node_delete(m, n);
		break;
	case (MAN_BODY):
		if (0 == n->nchild)
			man_nmsg(m, n, MANDOCERR_IGNPAR);
		break;
	case (MAN_HEAD):
		if (n->nchild)
			man_nmsg(m, n, MANDOCERR_ARGSLOST);
		break;
	default:
		break;
	}

	return(1);
}


static int
check_bline(CHKARGS)
{

	assert( ! (MAN_ELINE & m->flags));
	if (MAN_BLINE & m->flags) {
		man_nmsg(m, n, MANDOCERR_SYNTLINESCOPE);
		return(0);
	}

	return(1);
}

static int
post_TH(CHKARGS)
{
	const char	*p;
	int		 line, pos;

	if (m->meta.title)
		free(m->meta.title);
	if (m->meta.vol)
		free(m->meta.vol);
	if (m->meta.source)
		free(m->meta.source);
	if (m->meta.msec)
		free(m->meta.msec);
	if (m->meta.date)
		free(m->meta.date);

	line = n->line;
	pos = n->pos;
	m->meta.title = m->meta.vol = m->meta.date =
		m->meta.msec = m->meta.source = NULL;

	/* ->TITLE<- MSEC DATE SOURCE VOL */

	n = n->child;
	if (n && n->string) {
		for (p = n->string; '\0' != *p; p++) {
			/* Only warn about this once... */
			if (isalpha((u_char)*p) && ! isupper((u_char)*p)) {
				man_nmsg(m, n, MANDOCERR_UPPERCASE);
				break;
			}
		}
		m->meta.title = mandoc_strdup(n->string);
	} else
		m->meta.title = mandoc_strdup("");

	/* TITLE ->MSEC<- DATE SOURCE VOL */

	if (n)
		n = n->next;
	if (n && n->string)
		m->meta.msec = mandoc_strdup(n->string);
	else
		m->meta.msec = mandoc_strdup("");

	/* TITLE MSEC ->DATE<- SOURCE VOL */

	if (n)
		n = n->next;
	if (n)
		pos = n->pos;
	m->meta.date = mandoc_normdate
		(m->parse, n ? n->string : NULL, line, pos);

	/* TITLE MSEC DATE ->SOURCE<- VOL */

	if (n && (n = n->next))
		m->meta.source = mandoc_strdup(n->string);

	/* TITLE MSEC DATE SOURCE ->VOL<- */

	if (n && (n = n->next))
		m->meta.vol = mandoc_strdup(n->string);

	/*
	 * Remove the `TH' node after we've processed it for our
	 * meta-data.
	 */
	man_node_delete(m, m->last);
	return(1);
}

static int
post_nf(CHKARGS)
{

	if (MAN_LITERAL & m->flags)
		man_nmsg(m, n, MANDOCERR_SCOPEREP);

	m->flags |= MAN_LITERAL;
	return(1);
}

static int
post_fi(CHKARGS)
{

	if ( ! (MAN_LITERAL & m->flags))
		man_nmsg(m, n, MANDOCERR_WNOSCOPE);

	m->flags &= ~MAN_LITERAL;
	return(1);
}

static int
post_UC(CHKARGS)
{
	static const char * const bsd_versions[] = {
	    "3rd Berkeley Distribution",
	    "4th Berkeley Distribution",
	    "4.2 Berkeley Distribution",
	    "4.3 Berkeley Distribution",
	    "4.4 Berkeley Distribution",
	};

	const char	*p, *s;

	n = n->child;
	n = m->last->child;

	if (NULL == n || MAN_TEXT != n->type)
		p = bsd_versions[0];
	else {
		s = n->string;
		if (0 == strcmp(s, "3"))
			p = bsd_versions[0];
		else if (0 == strcmp(s, "4"))
			p = bsd_versions[1];
		else if (0 == strcmp(s, "5"))
			p = bsd_versions[2];
		else if (0 == strcmp(s, "6"))
			p = bsd_versions[3];
		else if (0 == strcmp(s, "7"))
			p = bsd_versions[4];
		else
			p = bsd_versions[0];
	}

	if (m->meta.source)
		free(m->meta.source);

	m->meta.source = mandoc_strdup(p);
	return(1);
}

static int
post_AT(CHKARGS)
{
	static const char * const unix_versions[] = {
	    "7th Edition",
	    "System III",
	    "System V",
	    "System V Release 2",
	};

	const char	*p, *s;
	struct man_node	*nn;

	n = n->child;

	if (NULL == n || MAN_TEXT != n->type)
		p = unix_versions[0];
	else {
		s = n->string;
		if (0 == strcmp(s, "3"))
			p = unix_versions[0];
		else if (0 == strcmp(s, "4"))
			p = unix_versions[1];
		else if (0 == strcmp(s, "5")) {
			nn = n->next;
			if (nn && MAN_TEXT == nn->type && nn->string[0])
				p = unix_versions[3];
			else
				p = unix_versions[2];
		} else
			p = unix_versions[0];
	}

	if (m->meta.source)
		free(m->meta.source);

	m->meta.source = mandoc_strdup(p);
	return(1);
}