/* $Id$ */
/*
* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2010, 2012, 2013, 2014 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 "mandoc_aux.h"
#include "libman.h"
#include "libmandoc.h"
#define CHKARGS struct man *man, struct man_node *n
typedef int (*v_check)(CHKARGS);
struct man_valid {
v_check *pres;
v_check *posts;
};
static int check_eq0(CHKARGS);
static int check_eq2(CHKARGS);
static int check_le1(CHKARGS);
static int check_ge2(CHKARGS);
static int check_le5(CHKARGS);
static int check_head1(CHKARGS);
static int check_par(CHKARGS);
static int check_part(CHKARGS);
static int check_root(CHKARGS);
static void check_text(CHKARGS);
static int post_AT(CHKARGS);
static int post_IP(CHKARGS);
static int post_vs(CHKARGS);
static int post_fi(CHKARGS);
static int post_ft(CHKARGS);
static int post_nf(CHKARGS);
static int post_sec(CHKARGS);
static int post_TH(CHKARGS);
static int post_UC(CHKARGS);
static int pre_sec(CHKARGS);
static v_check posts_at[] = { post_AT, NULL };
static v_check posts_br[] = { post_vs, check_eq0, NULL };
static v_check posts_eq0[] = { check_eq0, NULL };
static v_check posts_eq2[] = { check_eq2, NULL };
static v_check posts_fi[] = { check_eq0, post_fi, NULL };
static v_check posts_ft[] = { post_ft, NULL };
static v_check posts_ip[] = { post_IP, NULL };
static v_check posts_le1[] = { check_le1, 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[] = { post_sec, NULL };
static v_check posts_sp[] = { post_vs, check_le1, NULL };
static v_check posts_th[] = { check_ge2, check_le5, post_TH, NULL };
static v_check posts_uc[] = { post_UC, NULL };
static v_check posts_ur[] = { check_head1, check_part, NULL };
static v_check pres_sec[] = { pre_sec, NULL };
static const struct man_valid man_valids[MAN_MAX] = {
{ NULL, posts_br }, /* br */
{ NULL, posts_th }, /* TH */
{ pres_sec, posts_sec }, /* SH */
{ pres_sec, posts_sec }, /* SS */
{ NULL, NULL }, /* TP */
{ NULL, posts_par }, /* LP */
{ NULL, posts_par }, /* PP */
{ NULL, posts_par }, /* P */
{ NULL, posts_ip }, /* IP */
{ NULL, 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 */
{ NULL, posts_sp }, /* sp */
{ NULL, posts_nf }, /* nf */
{ NULL, posts_fi }, /* fi */
{ NULL, NULL }, /* RE */
{ NULL, posts_part }, /* RS */
{ NULL, NULL }, /* DT */
{ NULL, posts_uc }, /* UC */
{ NULL, posts_le1 }, /* PD */
{ NULL, posts_at }, /* AT */
{ NULL, NULL }, /* in */
{ NULL, posts_ft }, /* ft */
{ NULL, posts_eq2 }, /* OP */
{ NULL, posts_nf }, /* EX */
{ NULL, posts_fi }, /* EE */
{ NULL, posts_ur }, /* UR */
{ NULL, NULL }, /* UE */
{ NULL, NULL }, /* ll */
};
int
man_valid_pre(struct man *man, 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)(man, n))
return(0);
return(1);
}
int
man_valid_post(struct man *man)
{
v_check *cp;
if (MAN_VALID & man->last->flags)
return(1);
man->last->flags |= MAN_VALID;
switch (man->last->type) {
case MAN_TEXT:
check_text(man, man->last);
return(1);
case MAN_ROOT:
return(check_root(man, man->last));
case MAN_EQN:
/* FALLTHROUGH */
case MAN_TBL:
return(1);
default:
break;
}
if (NULL == (cp = man_valids[man->last->tok].posts))
return(1);
for ( ; *cp; cp++)
if ( ! (*cp)(man, man->last))
return(0);
return(1);
}
static int
check_root(CHKARGS)
{
if ((MAN_BLINE | MAN_ELINE) & man->flags)
mandoc_msg(MANDOCERR_BLK_LINE, man->parse,
0, 0, "at end of file");
man->flags &= ~MAN_BLINE;
man->flags &= ~MAN_ELINE;
if (NULL == man->first->child)
man_nmsg(man, n, MANDOCERR_DOC_EMPTY);
else
man->meta.hasbody = 1;
if (NULL == man->meta.title) {
man_nmsg(man, n, MANDOCERR_TH_MISSING);
/*
* If a title hasn't been set, do so now (by
* implication, date and section also aren't set).
*/
man->meta.title = mandoc_strdup("unknown");
man->meta.msec = mandoc_strdup("1");
man->meta.date = man->quick ? mandoc_strdup("") :
mandoc_normdate(man->parse, NULL, n->line, n->pos);
}
return(1);
}
static void
check_text(CHKARGS)
{
char *cp, *p;
if (MAN_LITERAL & man->flags)
return;
cp = n->string;
for (p = cp; NULL != (p = strchr(p, '\t')); p++)
mandoc_msg(MANDOCERR_FI_TAB, man->parse,
n->line, n->pos + (p - cp), NULL);
}
#define INEQ_DEFINE(x, ineq, name) \
static int \
check_##name(CHKARGS) \
{ \
if (n->nchild ineq (x)) \
return(1); \
mandoc_vmsg(MANDOCERR_ARGCOUNT, man->parse, n->line, n->pos, \
"line arguments %s %d (have %d)", \
#ineq, (x), n->nchild); \
return(1); \
}
INEQ_DEFINE(0, ==, eq0)
INEQ_DEFINE(2, ==, eq2)
INEQ_DEFINE(1, <=, le1)
INEQ_DEFINE(2, >=, ge2)
INEQ_DEFINE(5, <=, le5)
static int
check_head1(CHKARGS)
{
if (MAN_HEAD == n->type && 1 != n->nchild)
mandoc_vmsg(MANDOCERR_ARGCOUNT, man->parse, n->line,
n->pos, "line arguments eq 1 (have %d)", n->nchild);
return(1);
}
static int
post_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_FT_BAD, man->parse,
n->line, n->pos, "ft %s", cp);
*cp = '\0';
}
if (1 < n->nchild)
mandoc_vmsg(MANDOCERR_ARGCOUNT, man->parse, n->line,
n->pos, "want one child (have %d)", n->nchild);
return(1);
}
static int
pre_sec(CHKARGS)
{
if (MAN_BLOCK == n->type)
man->flags &= ~MAN_LITERAL;
return(1);
}
static int
post_sec(CHKARGS)
{
if ( ! (MAN_HEAD == n->type && 0 == n->nchild))
return(1);
man_nmsg(man, n, MANDOCERR_SYNTARGCOUNT);
return(0);
}
static int
check_part(CHKARGS)
{
if (MAN_BODY == n->type && 0 == n->nchild)
mandoc_msg(MANDOCERR_ARGCWARN, man->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(man, n);
break;
case MAN_BODY:
if (0 == n->nchild)
mandoc_vmsg(MANDOCERR_PAR_SKIP,
man->parse, n->line, n->pos,
"%s empty", man_macronames[n->tok]);
break;
case MAN_HEAD:
if (n->nchild)
mandoc_vmsg(MANDOCERR_ARG_SKIP,
man->parse, n->line, n->pos,
"%s %s%s", man_macronames[n->tok],
n->child->string,
n->nchild > 1 ? " ..." : "");
break;
default:
break;
}
return(1);
}
static int
post_IP(CHKARGS)
{
switch (n->type) {
case MAN_BLOCK:
if (0 == n->head->nchild && 0 == n->body->nchild)
man_node_delete(man, n);
break;
case MAN_BODY:
if (0 == n->parent->head->nchild && 0 == n->nchild)
mandoc_vmsg(MANDOCERR_PAR_SKIP,
man->parse, n->line, n->pos,
"%s empty", man_macronames[n->tok]);
break;
default:
break;
}
return(1);
}
static int
post_TH(CHKARGS)
{
struct man_node *nb;
const char *p;
free(man->meta.title);
free(man->meta.vol);
free(man->meta.source);
free(man->meta.msec);
free(man->meta.date);
man->meta.title = man->meta.vol = man->meta.date =
man->meta.msec = man->meta.source = NULL;
nb = n;
/* ->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((unsigned char)*p) &&
! isupper((unsigned char)*p)) {
mandoc_msg(MANDOCERR_TITLE_CASE,
man->parse, n->line,
n->pos + (p - n->string),
n->string);
break;
}
}
man->meta.title = mandoc_strdup(n->string);
} else
man->meta.title = mandoc_strdup("");
/* TITLE ->MSEC<- DATE SOURCE VOL */
if (n)
n = n->next;
if (n && n->string)
man->meta.msec = mandoc_strdup(n->string);
else
man->meta.msec = mandoc_strdup("");
/* TITLE MSEC ->DATE<- SOURCE VOL */
if (n)
n = n->next;
if (n && n->string && '\0' != n->string[0]) {
man->meta.date = man->quick ?
mandoc_strdup(n->string) :
mandoc_normdate(man->parse, n->string,
n->line, n->pos);
} else {
man->meta.date = mandoc_strdup("");
man_nmsg(man, n ? n : nb, MANDOCERR_DATE_MISSING);
}
/* TITLE MSEC DATE ->SOURCE<- VOL */
if (n && (n = n->next))
man->meta.source = mandoc_strdup(n->string);
/* TITLE MSEC DATE SOURCE ->VOL<- */
/* If missing, use the default VOL name for MSEC. */
if (n && (n = n->next))
man->meta.vol = mandoc_strdup(n->string);
else if ('\0' != man->meta.msec[0] &&
(NULL != (p = mandoc_a2msec(man->meta.msec))))
man->meta.vol = mandoc_strdup(p);
/*
* Remove the `TH' node after we've processed it for our
* meta-data.
*/
man_node_delete(man, man->last);
return(1);
}
static int
post_nf(CHKARGS)
{
if (MAN_LITERAL & man->flags)
man_nmsg(man, n, MANDOCERR_NF_SKIP);
man->flags |= MAN_LITERAL;
return(1);
}
static int
post_fi(CHKARGS)
{
if ( ! (MAN_LITERAL & man->flags))
man_nmsg(man, n, MANDOCERR_FI_SKIP);
man->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;
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];
}
free(man->meta.source);
man->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];
}
free(man->meta.source);
man->meta.source = mandoc_strdup(p);
return(1);
}
static int
post_vs(CHKARGS)
{
if (NULL != n->prev)
return(1);
switch (n->parent->tok) {
case MAN_SH:
/* FALLTHROUGH */
case MAN_SS:
mandoc_vmsg(MANDOCERR_PAR_SKIP, man->parse, n->line, n->pos,
"%s after %s", man_macronames[n->tok],
man_macronames[n->parent->tok]);
/* FALLTHROUGH */
case MAN_MAX:
/*
* Don't warn about this because it occurs in pod2man
* and would cause considerable (unfixable) warnage.
*/
man_node_delete(man, n);
break;
default:
break;
}
return(1);
}
