void
mdoc_macro(MACRO_PROT_ARGS)
{
assert(tok < MDOC_MAX);
if (mdoc->flags & MDOC_PBODY) {
if (tok == MDOC_Dt) {
mandoc_vmsg(MANDOCERR_DT_LATE,
mdoc->parse, line, ppos,
"Dt %s", buf + *pos);
return;
}
} else if ( ! (mdoc_macros[tok].flags & MDOC_PROLOGUE)) {
if (mdoc->meta.title == NULL) {
mandoc_vmsg(MANDOCERR_DT_NOTITLE,
mdoc->parse, line, ppos, "%s %s",
mdoc_macronames[tok], buf + *pos);
mdoc->meta.title = mandoc_strdup("UNTITLED");
}
if (NULL == mdoc->meta.vol)
mdoc->meta.vol = mandoc_strdup("LOCAL");
mdoc->flags |= MDOC_PBODY;
}
(*mdoc_macros[tok].fp)(mdoc, tok, line, ppos, pos, buf);
}
static void
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;
}
}
/*
* Close out a generic explicit macro.
*/
void
blk_close(MACRO_PROT_ARGS)
{
int ntok;
const struct roff_node *nn;
char *p;
int nrew, target;
nrew = 1;
switch (tok) {
case MAN_RE:
ntok = MAN_RS;
if ( ! man_args(man, line, pos, buf, &p))
break;
for (nn = man->last->parent; nn; nn = nn->parent)
if (nn->tok == ntok && nn->type == ROFFT_BLOCK)
nrew++;
target = strtol(p, &p, 10);
if (*p != '\0')
mandoc_vmsg(MANDOCERR_ARG_EXCESS, man->parse,
line, p - buf, "RE ... %s", p);
if (target == 0)
target = 1;
nrew -= target;
if (nrew < 1) {
mandoc_vmsg(MANDOCERR_RE_NOTOPEN, man->parse,
line, ppos, "RE %d", target);
return;
}
break;
case MAN_UE:
ntok = MAN_UR;
break;
default:
abort();
}
for (nn = man->last->parent; nn; nn = nn->parent)
if (nn->tok == ntok && nn->type == ROFFT_BLOCK && ! --nrew)
break;
if (nn == NULL) {
mandoc_msg(MANDOCERR_BLK_NOTOPEN, man->parse,
line, ppos, man_macronames[tok]);
rew_scope(man, MAN_PP);
} else {
line = man->last->line;
ppos = man->last->pos;
ntok = man->last->tok;
man_unscope(man, nn);
/* Move a trailing paragraph behind the block. */
if (ntok == MAN_LP || ntok == MAN_PP || ntok == MAN_P) {
*pos = strlen(buf);
blk_imp(man, ntok, line, ppos, pos, buf);
}
}
}
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_BADFONT, man->parse,
n->line, n->pos, "%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 void
cell(struct tbl_node *tbl, struct tbl_row *rp,
int ln, const char *p, int *pos)
{
int i;
enum tbl_cellt c;
/* Handle leading vertical lines */
while (p[*pos] == ' ' || p[*pos] == '\t' || p[*pos] == '|') {
if (p[*pos] == '|') {
if (rp->vert < 2)
rp->vert++;
else
mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
tbl->parse, ln, *pos, NULL);
}
(*pos)++;
}
again:
while (p[*pos] == ' ' || p[*pos] == '\t')
(*pos)++;
if (p[*pos] == '.' || p[*pos] == '\0')
return;
/* Parse the column position (`c', `l', `r', ...). */
for (i = 0; i < KEYS_MAX; i++)
if (tolower((unsigned char)p[*pos]) == keys[i].name)
break;
if (i == KEYS_MAX) {
mandoc_vmsg(MANDOCERR_TBLLAYOUT_CHAR, tbl->parse,
ln, *pos, "%c", p[*pos]);
(*pos)++;
goto again;
}
c = keys[i].key;
/* Special cases of spanners. */
if (c == TBL_CELL_SPAN) {
if (rp->last == NULL)
mandoc_msg(MANDOCERR_TBLLAYOUT_SPAN,
tbl->parse, ln, *pos, NULL);
else if (rp->last->pos == TBL_CELL_HORIZ ||
rp->last->pos == TBL_CELL_DHORIZ)
c = rp->last->pos;
} else if (c == TBL_CELL_DOWN && rp == tbl->first_row)
mandoc_msg(MANDOCERR_TBLLAYOUT_DOWN,
tbl->parse, ln, *pos, NULL);
(*pos)++;
/* Allocate cell then parse its modifiers. */
mods(tbl, cell_alloc(tbl, rp, c), ln, p, pos);
}
/*
* If there is an open sub-block of the target requiring
* explicit close-out, postpone closing out the target until
* the rew_pending() call closing out the sub-block.
*/
static int
find_pending(struct roff_man *mdoc, int tok, int line, int ppos,
struct roff_node *target)
{
struct roff_node *n;
int irc;
irc = 0;
for (n = mdoc->last; n != NULL && n != target; n = n->parent) {
if (n->flags & MDOC_ENDED) {
if ( ! (n->flags & MDOC_VALID))
n->flags |= MDOC_BROKEN;
continue;
}
if (n->type == ROFFT_BLOCK &&
mdoc_macros[n->tok].flags & MDOC_EXPLICIT) {
irc = 1;
n->flags = MDOC_BROKEN;
if (target->type == ROFFT_HEAD)
target->flags = MDOC_ENDED;
else if ( ! (target->flags & MDOC_ENDED)) {
mandoc_vmsg(MANDOCERR_BLK_NEST,
mdoc->parse, line, ppos,
"%s breaks %s", mdoc_macronames[tok],
mdoc_macronames[n->tok]);
mdoc_endbody_alloc(mdoc, line, ppos,
tok, target, ENDBODY_NOSPACE);
}
}
}
return irc;
}
static void
post_vs(CHKARGS)
{
if (NULL != n->prev)
return;
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;
}
}
void
man_unscope(struct roff_man *man, const struct roff_node *to)
{
struct roff_node *n;
to = to->parent;
n = man->last;
while (n != to) {
/* Reached the end of the document? */
if (to == NULL && ! (n->flags & MAN_VALID)) {
if (man->flags & (MAN_BLINE | MAN_ELINE) &&
man_macros[n->tok].flags & MAN_SCOPED) {
mandoc_vmsg(MANDOCERR_BLK_LINE,
man->parse, n->line, n->pos,
"EOF breaks %s",
man_macronames[n->tok]);
if (man->flags & MAN_ELINE)
man->flags &= ~MAN_ELINE;
else {
assert(n->type == ROFFT_HEAD);
n = n->parent;
man->flags &= ~MAN_BLINE;
}
man->last = n;
n = n->parent;
roff_node_delete(man, man->last);
continue;
}
if (n->type == ROFFT_BLOCK &&
man_macros[n->tok].fp == blk_exp)
mandoc_msg(MANDOCERR_BLK_NOEND,
man->parse, n->line, n->pos,
man_macronames[n->tok]);
}
/*
* We might delete the man->last node
* in the post-validation phase.
* Save a pointer to the parent such that
* we know where to continue the iteration.
*/
man->last = n;
n = n->parent;
man->last->flags |= MAN_VALID;
}
/*
* If we ended up at the parent of the node we were
* supposed to rewind to, that means the target node
* got deleted, so add the next node we parse as a child
* of the parent instead of as a sibling of the target.
*/
man->next = (man->last == to) ?
ROFF_NEXT_CHILD : ROFF_NEXT_SIBLING;
}
static int
rew_sub(enum mdoc_type t, struct mdoc *mdoc,
enum mdoct tok, int line, int ppos)
{
struct mdoc_node *n;
n = mdoc->last;
while (n) {
switch (rew_dohalt(tok, t, n)) {
case (REWIND_NONE):
return(1);
case (REWIND_THIS):
n->lastline = line -
(MDOC_NEWLINE & mdoc->flags &&
! (MDOC_EXPLICIT & mdoc_macros[tok].flags));
break;
case (REWIND_FORCE):
mandoc_vmsg(MANDOCERR_SCOPEBROKEN, mdoc->parse,
line, ppos, "%s breaks %s",
mdoc_macronames[tok],
mdoc_macronames[n->tok]);
/* FALLTHROUGH */
case (REWIND_MORE):
n->lastline = line -
(MDOC_NEWLINE & mdoc->flags ? 1 : 0);
n = n->parent;
continue;
case (REWIND_LATER):
if (make_pending(n, tok, mdoc, line, ppos) ||
MDOC_BLOCK != t)
return(1);
/* FALLTHROUGH */
case (REWIND_ERROR):
mdoc_pmsg(mdoc, line, ppos, MANDOCERR_NOSCOPE);
return(1);
}
break;
}
assert(n);
if ( ! rew_last(mdoc, n))
return(0);
/*
* The current block extends an enclosing block.
* Now that the current block ends, close the enclosing block, too.
*/
while (NULL != (n = n->pending)) {
if ( ! rew_last(mdoc, n))
return(0);
if (MDOC_HEAD == n->type &&
! mdoc_body_alloc(mdoc, n->line, n->pos, n->tok))
return(0);
}
return(1);
}
static void
post_UR(CHKARGS)
{
if (n->type == MAN_HEAD && n->child == NULL)
mandoc_vmsg(MANDOCERR_UR_NOHEAD, man->parse,
n->line, n->pos, "UR");
check_part(man, n);
}
static void
post_OP(CHKARGS)
{
if (n->nchild == 0)
mandoc_msg(MANDOCERR_OP_EMPTY, man->parse,
n->line, n->pos, "OP");
else if (n->nchild > 2) {
n = n->child->next->next;
mandoc_vmsg(MANDOCERR_ARG_EXCESS, man->parse,
n->line, n->pos, "OP ... %s", n->string);
}
}
static void
eqn_def(struct eqn_node *ep)
{
const char *start;
size_t sz;
struct eqn_def *def;
int i;
if ((start = eqn_nextrawtok(ep, &sz)) == NULL) {
mandoc_msg(MANDOCERR_REQ_EMPTY, ep->parse,
ep->eqn.ln, ep->eqn.pos, "define");
return;
}
/*
* Search for a key that already exists.
* Create a new key if none is found.
*/
if (NULL == (def = eqn_def_find(ep, start, sz))) {
/* Find holes in string array. */
for (i = 0; i < (int)ep->defsz; i++)
if (0 == ep->defs[i].keysz)
break;
if (i == (int)ep->defsz) {
ep->defsz++;
ep->defs = mandoc_reallocarray(ep->defs,
ep->defsz, sizeof(struct eqn_def));
ep->defs[i].key = ep->defs[i].val = NULL;
}
def = ep->defs + i;
free(def->key);
def->key = mandoc_strndup(start, sz);
def->keysz = sz;
}
start = eqn_next(ep, ep->data[(int)ep->cur], &sz, 0);
if (start == NULL) {
mandoc_vmsg(MANDOCERR_REQ_EMPTY, ep->parse,
ep->eqn.ln, ep->eqn.pos, "define %s", def->key);
free(def->key);
free(def->val);
def->key = def->val = NULL;
def->keysz = def->valsz = 0;
return;
}
free(def->val);
def->val = mandoc_strndup(start, sz);
def->valsz = sz;
}
static void
post_ft(CHKARGS)
{
char *cp;
int ok;
if (0 == n->nchild)
return;
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';
}
}
enum rofferr
eqn_read(struct eqn_node **epp, int ln,
const char *p, int pos, int *offs)
{
size_t sz;
struct eqn_node *ep;
enum rofferr er;
ep = *epp;
/*
* If we're the terminating mark, unset our equation status and
* validate the full equation.
*/
if (0 == strncmp(p, ".EN", 3)) {
er = eqn_end(epp);
p += 3;
while (' ' == *p || '\t' == *p)
p++;
if ('\0' == *p)
return(er);
mandoc_vmsg(MANDOCERR_ARG_SKIP, ep->parse,
ln, pos, "EN %s", p);
return(er);
}
/*
* Build up the full string, replacing all newlines with regular
* whitespace.
*/
sz = strlen(p + pos) + 1;
ep->data = mandoc_realloc(ep->data, ep->sz + sz + 1);
/* First invocation: nil terminate the string. */
if (0 == ep->sz)
*ep->data = '\0';
ep->sz += sz;
strlcat(ep->data, p + pos, ep->sz + 1);
strlcat(ep->data, " ", ep->sz + 1);
return(ROFF_IGN);
}
static void
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;
}
}
void
blk_exp(MACRO_PROT_ARGS)
{
struct roff_node *head;
char *p;
int la;
rew_scope(man, tok);
roff_block_alloc(man, line, ppos, tok);
head = roff_head_alloc(man, line, ppos, tok);
la = *pos;
if (man_args(man, line, pos, buf, &p))
roff_word_alloc(man, line, la, p);
if (buf[*pos] != '\0')
mandoc_vmsg(MANDOCERR_ARG_EXCESS, man->parse, line,
*pos, "%s ... %s", roff_name[tok], buf + *pos);
man_unscope(man, head);
roff_body_alloc(man, line, ppos, tok);
}
static void
blk_full(MACRO_PROT_ARGS)
{
int la, nl, parsed;
struct mdoc_arg *arg;
struct roff_node *blk; /* Our own or a broken block. */
struct roff_node *head; /* Our own head. */
struct roff_node *body; /* Our own body. */
struct roff_node *n;
enum margserr ac, lac;
char *p;
nl = MDOC_NEWLINE & mdoc->flags;
if (buf[*pos] == '\0' && (tok == MDOC_Sh || tok == MDOC_Ss)) {
mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
line, ppos, mdoc_macronames[tok]);
return;
}
if ( ! (mdoc_macros[tok].flags & MDOC_EXPLICIT)) {
/* Here, tok is one of Sh Ss Nm Nd It. */
blk = NULL;
for (n = mdoc->last; n != NULL; n = n->parent) {
if (n->flags & MDOC_ENDED) {
if ( ! (n->flags & MDOC_VALID))
n->flags |= MDOC_BROKEN;
continue;
}
if (n->type != ROFFT_BLOCK)
continue;
if (tok == MDOC_It && n->tok == MDOC_Bl) {
if (blk != NULL) {
mandoc_vmsg(MANDOCERR_BLK_BROKEN,
mdoc->parse, line, ppos,
"It breaks %s",
mdoc_macronames[blk->tok]);
rew_pending(mdoc, blk);
}
break;
}
if (mdoc_macros[n->tok].flags & MDOC_EXPLICIT) {
switch (tok) {
case MDOC_Sh:
case MDOC_Ss:
mandoc_vmsg(MANDOCERR_BLK_BROKEN,
mdoc->parse, line, ppos,
"%s breaks %s",
mdoc_macronames[tok],
mdoc_macronames[n->tok]);
rew_pending(mdoc, n);
n = mdoc->last;
continue;
case MDOC_It:
/* Delay in case it's astray. */
blk = n;
continue;
default:
break;
}
break;
}
/* Here, n is one of Sh Ss Nm Nd It. */
if (tok != MDOC_Sh && (n->tok == MDOC_Sh ||
(tok != MDOC_Ss && (n->tok == MDOC_Ss ||
(tok != MDOC_It && n->tok == MDOC_It)))))
break;
/* Item breaking an explicit block. */
if (blk != NULL) {
mandoc_vmsg(MANDOCERR_BLK_BROKEN,
mdoc->parse, line, ppos,
"It breaks %s",
mdoc_macronames[blk->tok]);
rew_pending(mdoc, blk);
blk = NULL;
}
/* Close out prior implicit scopes. */
rew_last(mdoc, n);
}
/* Skip items outside lists. */
if (tok == MDOC_It && (n == NULL || n->tok != MDOC_Bl)) {
mandoc_vmsg(MANDOCERR_IT_STRAY, mdoc->parse,
line, ppos, "It %s", buf + *pos);
roff_elem_alloc(mdoc, line, ppos, MDOC_br);
rew_elem(mdoc, MDOC_br);
return;
}
}
/*
* This routine accommodates implicitly- and explicitly-scoped
* macro openings. Implicit ones first close out prior scope
* (seen above). Delay opening the head until necessary to
* allow leading punctuation to print. Special consideration
* for `It -column', which has phrase-part syntax instead of
* regular child nodes.
*/
mdoc_argv(mdoc, line, tok, &arg, pos, buf);
blk = mdoc_block_alloc(mdoc, line, ppos, tok, arg);
head = body = NULL;
/*
* Exception: Heads of `It' macros in `-diag' lists are not
* parsed, even though `It' macros in general are parsed.
*/
parsed = tok != MDOC_It ||
mdoc->last->parent->tok != MDOC_Bl ||
mdoc->last->parent->norm->Bl.type != LIST_diag;
/*
* The `Nd' macro has all arguments in its body: it's a hybrid
* of block partial-explicit and full-implicit. Stupid.
*/
if (tok == MDOC_Nd) {
head = roff_head_alloc(mdoc, line, ppos, tok);
rew_last(mdoc, head);
body = roff_body_alloc(mdoc, line, ppos, tok);
}
if (tok == MDOC_Bk)
mdoc->flags |= MDOC_KEEP;
ac = ARGS_EOLN;
for (;;) {
/*
* If we are right after a tab character,
* do not parse the first word for macros.
*/
if (mdoc->flags & MDOC_PHRASEQN) {
mdoc->flags &= ~MDOC_PHRASEQN;
mdoc->flags |= MDOC_PHRASEQF;
}
la = *pos;
lac = ac;
ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
if (ac == ARGS_EOLN) {
if (lac != ARGS_PHRASE ||
! (mdoc->flags & MDOC_PHRASEQF))
break;
/*
* This line ends in a tab; start the next
* column now, with a leading blank.
*/
if (body != NULL)
rew_last(mdoc, body);
body = roff_body_alloc(mdoc, line, ppos, tok);
roff_word_alloc(mdoc, line, ppos, "\\&");
break;
}
if (tok == MDOC_Bd || tok == MDOC_Bk) {
mandoc_vmsg(MANDOCERR_ARG_EXCESS,
mdoc->parse, line, la, "%s ... %s",
mdoc_macronames[tok], buf + la);
break;
}
if (tok == MDOC_Rs) {
mandoc_vmsg(MANDOCERR_ARG_SKIP, mdoc->parse,
line, la, "Rs %s", buf + la);
break;
}
if (ac == ARGS_PUNCT)
break;
/*
* Emit leading punctuation (i.e., punctuation before
* the ROFFT_HEAD) for non-phrase types.
*/
if (head == NULL &&
ac != ARGS_PHRASE &&
ac != ARGS_QWORD &&
mdoc_isdelim(p) == DELIM_OPEN) {
dword(mdoc, line, la, p, DELIM_OPEN, 0);
continue;
}
/* Open a head if one hasn't been opened. */
if (head == NULL)
head = roff_head_alloc(mdoc, line, ppos, tok);
if (ac == ARGS_PHRASE) {
/*
* If we haven't opened a body yet, rewind the
* head; if we have, rewind that instead.
*/
rew_last(mdoc, body == NULL ? head : body);
body = roff_body_alloc(mdoc, line, ppos, tok);
/* Process to the tab or to the end of the line. */
mdoc->flags |= MDOC_PHRASE;
parse_rest(mdoc, TOKEN_NONE, line, &la, buf);
mdoc->flags &= ~MDOC_PHRASE;
/* There may have been `Ta' macros. */
while (body->next != NULL)
body = body->next;
continue;
}
if (macro_or_word(mdoc, tok, line, la, pos, buf, parsed))
break;
}
if (blk->flags & MDOC_VALID)
return;
if (head == NULL)
head = roff_head_alloc(mdoc, line, ppos, tok);
if (nl && tok != MDOC_Bd && tok != MDOC_Bl && tok != MDOC_Rs)
append_delims(mdoc, line, pos, buf);
if (body != NULL)
goto out;
if (find_pending(mdoc, tok, line, ppos, head))
return;
/* Close out scopes to remain in a consistent state. */
rew_last(mdoc, head);
body = roff_body_alloc(mdoc, line, ppos, tok);
out:
if (mdoc->flags & MDOC_FREECOL) {
rew_last(mdoc, body);
rew_last(mdoc, blk);
mdoc->flags &= ~MDOC_FREECOL;
}
}
/*
* Close out block partial/full explicit.
*/
static void
blk_exp_close(MACRO_PROT_ARGS)
{
struct roff_node *body; /* Our own body. */
struct roff_node *endbody; /* Our own end marker. */
struct roff_node *itblk; /* An It block starting later. */
struct roff_node *later; /* A sub-block starting later. */
struct roff_node *n; /* Search back to our block. */
struct roff_node *target; /* For find_pending(). */
int j, lastarg, maxargs, nl, pending;
enum margserr ac;
int atok, ntok;
char *p;
nl = MDOC_NEWLINE & mdoc->flags;
switch (tok) {
case MDOC_Ec:
maxargs = 1;
break;
case MDOC_Ek:
mdoc->flags &= ~MDOC_KEEP;
/* FALLTHROUGH */
default:
maxargs = 0;
break;
}
/*
* Search backwards for beginnings of blocks,
* both of our own and of pending sub-blocks.
*/
atok = rew_alt(tok);
body = endbody = itblk = later = NULL;
for (n = mdoc->last; n; n = n->parent) {
if (n->flags & MDOC_ENDED) {
if ( ! (n->flags & MDOC_VALID))
n->flags |= MDOC_BROKEN;
continue;
}
/* Remember the start of our own body. */
if (n->type == ROFFT_BODY && atok == n->tok) {
if (n->end == ENDBODY_NOT)
body = n;
continue;
}
if (n->type != ROFFT_BLOCK || n->tok == MDOC_Nm)
continue;
if (n->tok == MDOC_It) {
itblk = n;
continue;
}
if (atok == n->tok) {
assert(body);
/*
* Found the start of our own block.
* When there is no pending sub block,
* just proceed to closing out.
*/
if (later == NULL ||
(tok == MDOC_El && itblk == NULL))
break;
/*
* When there is a pending sub block, postpone
* closing out the current block until the
* rew_pending() closing out the sub-block.
* Mark the place where the formatting - but not
* the scope - of the current block ends.
*/
mandoc_vmsg(MANDOCERR_BLK_NEST, mdoc->parse,
line, ppos, "%s breaks %s",
mdoc_macronames[atok],
mdoc_macronames[later->tok]);
endbody = mdoc_endbody_alloc(mdoc, line, ppos,
atok, body, ENDBODY_SPACE);
if (tok == MDOC_El)
itblk->flags |= MDOC_ENDED | MDOC_BROKEN;
/*
* If a block closing macro taking arguments
* breaks another block, put the arguments
* into the end marker.
*/
if (maxargs)
mdoc->next = ROFF_NEXT_CHILD;
break;
}
/* Explicit blocks close out description lines. */
if (n->tok == MDOC_Nd) {
rew_last(mdoc, n);
continue;
}
/* Breaking an open sub block. */
n->flags |= MDOC_BROKEN;
if (later == NULL)
later = n;
}
if (body == NULL) {
mandoc_msg(MANDOCERR_BLK_NOTOPEN, mdoc->parse,
line, ppos, mdoc_macronames[tok]);
if (later != NULL)
later->flags &= ~MDOC_BROKEN;
if (maxargs && endbody == NULL) {
/*
* Stray .Ec without previous .Eo:
* Break the output line, keep the arguments.
*/
roff_elem_alloc(mdoc, line, ppos, MDOC_br);
rew_elem(mdoc, MDOC_br);
}
} else if (endbody == NULL) {
rew_last(mdoc, body);
if (maxargs)
mdoc_tail_alloc(mdoc, line, ppos, atok);
}
if ( ! (mdoc_macros[tok].flags & MDOC_PARSED)) {
if (buf[*pos] != '\0')
mandoc_vmsg(MANDOCERR_ARG_SKIP,
mdoc->parse, line, ppos,
"%s %s", mdoc_macronames[tok],
buf + *pos);
if (endbody == NULL && n != NULL)
rew_pending(mdoc, n);
return;
}
if (endbody != NULL)
n = endbody;
ntok = TOKEN_NONE;
for (j = 0; ; j++) {
lastarg = *pos;
if (j == maxargs && n != NULL)
rew_last(mdoc, n);
ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
if (ac == ARGS_PUNCT || ac == ARGS_EOLN)
break;
ntok = ac == ARGS_QWORD ? TOKEN_NONE :
lookup(mdoc, tok, line, lastarg, p);
if (ntok == TOKEN_NONE) {
dword(mdoc, line, lastarg, p, DELIM_MAX,
MDOC_JOIN & mdoc_macros[tok].flags);
continue;
}
if (n != NULL)
rew_last(mdoc, n);
mdoc->flags &= ~MDOC_NEWLINE;
mdoc_macro(mdoc, ntok, line, lastarg, pos, buf);
break;
}
if (n != NULL) {
if (ntok != TOKEN_NONE && n->flags & MDOC_BROKEN) {
target = n;
do
target = target->parent;
while ( ! (target->flags & MDOC_ENDED));
pending = find_pending(mdoc, ntok, line, ppos,
target);
} else
pending = 0;
if ( ! pending)
rew_pending(mdoc, n);
}
if (nl)
append_delims(mdoc, line, pos, buf);
}
static void
blk_full(MACRO_PROT_ARGS)
{
int la, nl, parsed;
struct mdoc_arg *arg;
struct mdoc_node *blk; /* Our own or a broken block. */
struct mdoc_node *head; /* Our own head. */
struct mdoc_node *body; /* Our own body. */
struct mdoc_node *n;
enum margserr ac, lac;
char *p;
nl = MDOC_NEWLINE & mdoc->flags;
if (buf[*pos] == '\0' && (tok == MDOC_Sh || tok == MDOC_Ss)) {
mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
line, ppos, mdoc_macronames[tok]);
return;
}
if ( ! (mdoc_macros[tok].flags & MDOC_EXPLICIT)) {
/* Here, tok is one of Sh Ss Nm Nd It. */
blk = NULL;
for (n = mdoc->last; n != NULL; n = n->parent) {
if (n->flags & MDOC_ENDED) {
if ( ! (n->flags & MDOC_VALID))
n->flags |= MDOC_BROKEN;
continue;
}
if (n->type != MDOC_BLOCK)
continue;
if (tok == MDOC_It && n->tok == MDOC_Bl) {
if (blk != NULL) {
mandoc_vmsg(MANDOCERR_BLK_BROKEN,
mdoc->parse, line, ppos,
"It breaks %s",
mdoc_macronames[blk->tok]);
rew_pending(mdoc, blk);
}
break;
}
if (mdoc_macros[n->tok].flags & MDOC_EXPLICIT) {
switch (tok) {
case MDOC_Sh:
/* FALLTHROUGH */
case MDOC_Ss:
mandoc_vmsg(MANDOCERR_BLK_BROKEN,
mdoc->parse, line, ppos,
"%s breaks %s",
mdoc_macronames[tok],
mdoc_macronames[n->tok]);
rew_pending(mdoc, n);
n = mdoc->last;
continue;
case MDOC_It:
/* Delay in case it's astray. */
blk = n;
continue;
default:
break;
}
break;
}
/* Here, n is one of Sh Ss Nm Nd It. */
if (tok != MDOC_Sh && (n->tok == MDOC_Sh ||
(tok != MDOC_Ss && (n->tok == MDOC_Ss ||
(tok != MDOC_It && n->tok == MDOC_It)))))
break;
/* Item breaking an explicit block. */
if (blk != NULL) {
mandoc_vmsg(MANDOCERR_BLK_BROKEN,
mdoc->parse, line, ppos,
"It breaks %s",
mdoc_macronames[blk->tok]);
rew_pending(mdoc, blk);
blk = NULL;
}
/* Close out prior implicit scopes. */
rew_last(mdoc, n);
}
/* Skip items outside lists. */
if (tok == MDOC_It && (n == NULL || n->tok != MDOC_Bl)) {
mandoc_vmsg(MANDOCERR_IT_STRAY, mdoc->parse,
line, ppos, "It %s", buf + *pos);
mdoc_elem_alloc(mdoc, line, ppos, MDOC_br, NULL);
rew_elem(mdoc, MDOC_br);
return;
}
}
/*
* This routine accommodates implicitly- and explicitly-scoped
* macro openings. Implicit ones first close out prior scope
* (seen above). Delay opening the head until necessary to
* allow leading punctuation to print. Special consideration
* for `It -column', which has phrase-part syntax instead of
* regular child nodes.
*/
mdoc_argv(mdoc, line, tok, &arg, pos, buf);
blk = mdoc_block_alloc(mdoc, line, ppos, tok, arg);
head = body = NULL;
/*
* Exception: Heads of `It' macros in `-diag' lists are not
* parsed, even though `It' macros in general are parsed.
*/
parsed = tok != MDOC_It ||
mdoc->last->parent->tok != MDOC_Bl ||
mdoc->last->parent->norm->Bl.type != LIST_diag;
/*
* The `Nd' macro has all arguments in its body: it's a hybrid
* of block partial-explicit and full-implicit. Stupid.
*/
if (tok == MDOC_Nd) {
head = mdoc_head_alloc(mdoc, line, ppos, tok);
rew_last(mdoc, head);
body = mdoc_body_alloc(mdoc, line, ppos, tok);
}
if (tok == MDOC_Bk)
mdoc->flags |= MDOC_KEEP;
ac = ARGS_PEND;
for (;;) {
la = *pos;
lac = ac;
ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
if (ac == ARGS_EOLN) {
if (lac != ARGS_PPHRASE && lac != ARGS_PHRASE)
break;
/*
* This is necessary: if the last token on a
* line is a `Ta' or tab, then we'll get
* ARGS_EOLN, so we must be smart enough to
* reopen our scope if the last parse was a
* phrase or partial phrase.
*/
if (body != NULL)
rew_last(mdoc, body);
body = mdoc_body_alloc(mdoc, line, ppos, tok);
break;
}
if (tok == MDOC_Bd || tok == MDOC_Bk) {
mandoc_vmsg(MANDOCERR_ARG_EXCESS,
mdoc->parse, line, la, "%s ... %s",
mdoc_macronames[tok], buf + la);
break;
}
if (tok == MDOC_Rs) {
mandoc_vmsg(MANDOCERR_ARG_SKIP, mdoc->parse,
line, la, "Rs %s", buf + la);
break;
}
if (ac == ARGS_PUNCT)
break;
/*
* Emit leading punctuation (i.e., punctuation before
* the MDOC_HEAD) for non-phrase types.
*/
if (head == NULL &&
ac != ARGS_PEND &&
ac != ARGS_PHRASE &&
ac != ARGS_PPHRASE &&
ac != ARGS_QWORD &&
mdoc_isdelim(p) == DELIM_OPEN) {
dword(mdoc, line, la, p, DELIM_OPEN, 0);
continue;
}
/* Open a head if one hasn't been opened. */
if (head == NULL)
head = mdoc_head_alloc(mdoc, line, ppos, tok);
if (ac == ARGS_PHRASE ||
ac == ARGS_PEND ||
ac == ARGS_PPHRASE) {
/*
* If we haven't opened a body yet, rewind the
* head; if we have, rewind that instead.
*/
rew_last(mdoc, body == NULL ? head : body);
body = mdoc_body_alloc(mdoc, line, ppos, tok);
/*
* Process phrases: set whether we're in a
* partial-phrase (this effects line handling)
* then call down into the phrase parser.
*/
if (ac == ARGS_PPHRASE)
mdoc->flags |= MDOC_PPHRASE;
if (ac == ARGS_PEND && lac == ARGS_PPHRASE)
mdoc->flags |= MDOC_PPHRASE;
parse_rest(mdoc, MDOC_MAX, line, &la, buf);
mdoc->flags &= ~MDOC_PPHRASE;
continue;
}
if (macro_or_word(mdoc, tok, line, la, pos, buf, parsed))
break;
}
if (blk->flags & MDOC_VALID)
return;
if (head == NULL)
head = mdoc_head_alloc(mdoc, line, ppos, tok);
if (nl && tok != MDOC_Bd && tok != MDOC_Bl && tok != MDOC_Rs)
append_delims(mdoc, line, pos, buf);
if (body != NULL)
goto out;
/*
* If there is an open (i.e., unvalidated) sub-block requiring
* explicit close-out, postpone switching the current block from
* head to body until the rew_pending() call closing out that
* sub-block.
*/
for (n = mdoc->last; n && n != head; n = n->parent) {
if (n->flags & MDOC_ENDED) {
if ( ! (n->flags & MDOC_VALID))
n->flags |= MDOC_BROKEN;
continue;
}
if (n->type == MDOC_BLOCK &&
mdoc_macros[n->tok].flags & MDOC_EXPLICIT) {
n->flags = MDOC_BROKEN;
head->flags = MDOC_ENDED;
}
}
if (head->flags & MDOC_ENDED)
return;
/* Close out scopes to remain in a consistent state. */
rew_last(mdoc, head);
body = mdoc_body_alloc(mdoc, line, ppos, tok);
out:
if (mdoc->flags & MDOC_FREECOL) {
rew_last(mdoc, body);
rew_last(mdoc, blk);
mdoc->flags &= ~MDOC_FREECOL;
}
}
static void
in_line_argn(MACRO_PROT_ARGS)
{
struct mdoc_arg *arg;
char *p;
enum margserr ac;
int ntok;
int state; /* arg#; -1: not yet open; -2: closed */
int la, maxargs, nl;
nl = mdoc->flags & MDOC_NEWLINE;
/*
* A line macro that has a fixed number of arguments (maxargs).
* Only open the scope once the first non-leading-punctuation is
* found (unless MDOC_IGNDELIM is noted, like in `Pf'), then
* keep it open until the maximum number of arguments are
* exhausted.
*/
switch (tok) {
case MDOC_Ap:
case MDOC_Ns:
case MDOC_Ux:
maxargs = 0;
break;
case MDOC_Bx:
case MDOC_Es:
case MDOC_Xr:
maxargs = 2;
break;
default:
maxargs = 1;
break;
}
mdoc_argv(mdoc, line, tok, &arg, pos, buf);
state = -1;
p = NULL;
for (;;) {
la = *pos;
ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
if (ac == ARGS_WORD && state == -1 &&
! (mdoc_macros[tok].flags & MDOC_IGNDELIM) &&
mdoc_isdelim(p) == DELIM_OPEN) {
dword(mdoc, line, la, p, DELIM_OPEN, 0);
continue;
}
if (state == -1 && tok != MDOC_In &&
tok != MDOC_St && tok != MDOC_Xr) {
mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
state = 0;
}
if (ac == ARGS_PUNCT || ac == ARGS_EOLN) {
if (abs(state) < 2 && tok == MDOC_Pf)
mandoc_vmsg(MANDOCERR_PF_SKIP,
mdoc->parse, line, ppos, "Pf %s",
p == NULL ? "at eol" : p);
break;
}
if (state == maxargs) {
rew_elem(mdoc, tok);
state = -2;
}
ntok = (ac == ARGS_QWORD || (tok == MDOC_Pf && state == 0)) ?
TOKEN_NONE : lookup(mdoc, tok, line, la, p);
if (ntok != TOKEN_NONE) {
if (state >= 0) {
rew_elem(mdoc, tok);
state = -2;
}
mdoc_macro(mdoc, ntok, line, la, pos, buf);
break;
}
if (ac == ARGS_QWORD ||
mdoc_macros[tok].flags & MDOC_IGNDELIM ||
mdoc_isdelim(p) == DELIM_NONE) {
if (state == -1) {
mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
state = 1;
} else if (state >= 0)
state++;
} else if (state >= 0) {
rew_elem(mdoc, tok);
state = -2;
}
dword(mdoc, line, la, p, DELIM_MAX,
MDOC_JOIN & mdoc_macros[tok].flags);
}
if (state == -1) {
mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
line, ppos, mdoc_macronames[tok]);
return;
}
if (state == 0 && tok == MDOC_Pf)
append_delims(mdoc, line, pos, buf);
if (state >= 0)
rew_elem(mdoc, tok);
if (nl)
append_delims(mdoc, line, pos, buf);
}
static void
mods(struct tbl_node *tbl, struct tbl_cell *cp,
int ln, const char *p, int *pos)
{
char *endptr;
mod:
while (p[*pos] == ' ' || p[*pos] == '\t')
(*pos)++;
/* Row delimiters and cell specifiers end modifier lists. */
if (strchr(".,-=^_ACLNRSaclnrs", p[*pos]) != NULL)
return;
/* Throw away parenthesised expression. */
if ('(' == p[*pos]) {
(*pos)++;
while (p[*pos] && ')' != p[*pos])
(*pos)++;
if (')' == p[*pos]) {
(*pos)++;
goto mod;
}
mandoc_msg(MANDOCERR_TBLLAYOUT_PAR, tbl->parse,
ln, *pos, NULL);
return;
}
/* Parse numerical spacing from modifier string. */
if (isdigit((unsigned char)p[*pos])) {
cp->spacing = strtoull(p + *pos, &endptr, 10);
*pos = endptr - p;
goto mod;
}
switch (tolower((unsigned char)p[(*pos)++])) {
case 'b':
cp->flags |= TBL_CELL_BOLD;
goto mod;
case 'd':
cp->flags |= TBL_CELL_BALIGN;
goto mod;
case 'e':
cp->flags |= TBL_CELL_EQUAL;
goto mod;
case 'f':
break;
case 'i':
cp->flags |= TBL_CELL_ITALIC;
goto mod;
case 'm':
mandoc_msg(MANDOCERR_TBLLAYOUT_MOD, tbl->parse,
ln, *pos, "m");
goto mod;
case 'p':
case 'v':
if (p[*pos] == '-' || p[*pos] == '+')
(*pos)++;
while (isdigit((unsigned char)p[*pos]))
(*pos)++;
goto mod;
case 't':
cp->flags |= TBL_CELL_TALIGN;
goto mod;
case 'u':
cp->flags |= TBL_CELL_UP;
goto mod;
case 'w': /* XXX for now, ignore minimal column width */
goto mod;
case 'x':
cp->flags |= TBL_CELL_WMAX;
goto mod;
case 'z':
cp->flags |= TBL_CELL_WIGN;
goto mod;
case '|':
if (cp->vert < 2)
cp->vert++;
else
mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
tbl->parse, ln, *pos - 1, NULL);
goto mod;
default:
mandoc_vmsg(MANDOCERR_TBLLAYOUT_CHAR, tbl->parse,
ln, *pos - 1, "%c", p[*pos - 1]);
goto mod;
}
/* Ignore parenthised font names for now. */
if (p[*pos] == '(')
goto mod;
/* Support only one-character font-names for now. */
if (p[*pos] == '\0' || (p[*pos + 1] != ' ' && p[*pos + 1] != '.')) {
mandoc_vmsg(MANDOCERR_FT_BAD, tbl->parse,
ln, *pos, "TS %s", p + *pos - 1);
if (p[*pos] != '\0')
(*pos)++;
if (p[*pos] != '\0')
(*pos)++;
goto mod;
}
switch (p[(*pos)++]) {
case '3':
case 'B':
cp->flags |= TBL_CELL_BOLD;
goto mod;
case '2':
case 'I':
cp->flags |= TBL_CELL_ITALIC;
goto mod;
case '1':
case 'R':
goto mod;
default:
mandoc_vmsg(MANDOCERR_FT_BAD, tbl->parse,
ln, *pos - 1, "TS f%c", p[*pos - 1]);
goto mod;
}
}
void
man_breakscope(struct roff_man *man, int tok)
{
struct roff_node *n;
/*
* An element next line scope is open,
* and the new macro is not allowed inside elements.
* Delete the element that is being broken.
*/
if (man->flags & MAN_ELINE && (tok < MAN_TH ||
! (man_macros[tok].flags & MAN_NSCOPED))) {
n = man->last;
assert(n->type != ROFFT_TEXT);
if (man_macros[n->tok].flags & MAN_NSCOPED)
n = n->parent;
mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse,
n->line, n->pos, "%s breaks %s",
roff_name[tok], roff_name[n->tok]);
roff_node_delete(man, n);
man->flags &= ~MAN_ELINE;
}
/*
* Weird special case:
* Switching fill mode closes section headers.
*/
if (man->flags & MAN_BLINE &&
(tok == MAN_nf || tok == MAN_fi) &&
(man->last->tok == MAN_SH || man->last->tok == MAN_SS)) {
n = man->last;
man_unscope(man, n);
roff_body_alloc(man, n->line, n->pos, n->tok);
man->flags &= ~MAN_BLINE;
}
/*
* A block header next line scope is open,
* and the new macro is not allowed inside block headers.
* Delete the block that is being broken.
*/
if (man->flags & MAN_BLINE && (tok < MAN_TH ||
man_macros[tok].flags & MAN_BSCOPE)) {
n = man->last;
if (n->type == ROFFT_TEXT)
n = n->parent;
if ( ! (man_macros[n->tok].flags & MAN_BSCOPE))
n = n->parent;
assert(n->type == ROFFT_HEAD);
n = n->parent;
assert(n->type == ROFFT_BLOCK);
assert(man_macros[n->tok].flags & MAN_SCOPED);
mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse,
n->line, n->pos, "%s breaks %s",
roff_name[tok], roff_name[n->tok]);
roff_node_delete(man, n);
man->flags &= ~MAN_BLINE;
}
}
/*
* Main parse routine for a buffer.
* It assumes encoding and line numbering are already set up.
* It can recurse directly (for invocations of user-defined
* macros, inline equations, and input line traps)
* and indirectly (for .so file inclusion).
*/
static void
mparse_buf_r(struct mparse *curp, struct buf blk, size_t i, int start)
{
const struct tbl_span *span;
struct buf ln;
const char *save_file;
char *cp;
size_t pos; /* byte number in the ln buffer */
enum rofferr rr;
int of;
int lnn; /* line number in the real file */
int fd;
unsigned char c;
memset(&ln, 0, sizeof(ln));
lnn = curp->line;
pos = 0;
while (i < blk.sz) {
if (0 == pos && '\0' == blk.buf[i])
break;
if (start) {
curp->line = lnn;
curp->reparse_count = 0;
if (lnn < 3 &&
curp->filenc & MPARSE_UTF8 &&
curp->filenc & MPARSE_LATIN1)
curp->filenc = preconv_cue(&blk, i);
}
while (i < blk.sz && (start || blk.buf[i] != '\0')) {
/*
* When finding an unescaped newline character,
* leave the character loop to process the line.
* Skip a preceding carriage return, if any.
*/
if ('\r' == blk.buf[i] && i + 1 < blk.sz &&
'\n' == blk.buf[i + 1])
++i;
if ('\n' == blk.buf[i]) {
++i;
++lnn;
break;
}
/*
* Make sure we have space for the worst
* case of 11 bytes: "\\[u10ffff]\0"
*/
if (pos + 11 > ln.sz)
resize_buf(&ln, 256);
/*
* Encode 8-bit input.
*/
c = blk.buf[i];
if (c & 0x80) {
if ( ! (curp->filenc && preconv_encode(
&blk, &i, &ln, &pos, &curp->filenc))) {
mandoc_vmsg(MANDOCERR_CHAR_BAD, curp,
curp->line, pos, "0x%x", c);
ln.buf[pos++] = '?';
i++;
}
continue;
}
/*
* Exclude control characters.
*/
if (c == 0x7f || (c < 0x20 && c != 0x09)) {
mandoc_vmsg(c == 0x00 || c == 0x04 ||
c > 0x0a ? MANDOCERR_CHAR_BAD :
MANDOCERR_CHAR_UNSUPP,
curp, curp->line, pos, "0x%x", c);
i++;
if (c != '\r')
ln.buf[pos++] = '?';
continue;
}
/* Trailing backslash = a plain char. */
if (blk.buf[i] != '\\' || i + 1 == blk.sz) {
ln.buf[pos++] = blk.buf[i++];
continue;
}
/*
* Found escape and at least one other character.
* When it's a newline character, skip it.
* When there is a carriage return in between,
* skip that one as well.
*/
if ('\r' == blk.buf[i + 1] && i + 2 < blk.sz &&
'\n' == blk.buf[i + 2])
++i;
if ('\n' == blk.buf[i + 1]) {
i += 2;
++lnn;
continue;
}
if ('"' == blk.buf[i + 1] || '#' == blk.buf[i + 1]) {
i += 2;
/* Comment, skip to end of line */
for (; i < blk.sz; ++i) {
if ('\n' == blk.buf[i]) {
++i;
++lnn;
break;
}
}
/* Backout trailing whitespaces */
for (; pos > 0; --pos) {
if (ln.buf[pos - 1] != ' ')
break;
if (pos > 2 && ln.buf[pos - 2] == '\\')
break;
}
break;
}
/* Catch escaped bogus characters. */
c = (unsigned char) blk.buf[i+1];
if ( ! (isascii(c) &&
(isgraph(c) || isblank(c)))) {
mandoc_vmsg(MANDOCERR_CHAR_BAD, curp,
curp->line, pos, "0x%x", c);
i += 2;
ln.buf[pos++] = '?';
continue;
}
/* Some other escape sequence, copy & cont. */
ln.buf[pos++] = blk.buf[i++];
ln.buf[pos++] = blk.buf[i++];
}
if (pos >= ln.sz)
resize_buf(&ln, 256);
ln.buf[pos] = '\0';
/*
* A significant amount of complexity is contained by
* the roff preprocessor. It's line-oriented but can be
* expressed on one line, so we need at times to
* readjust our starting point and re-run it. The roff
* preprocessor can also readjust the buffers with new
* data, so we pass them in wholesale.
*/
of = 0;
/*
* Maintain a lookaside buffer of all parsed lines. We
* only do this if mparse_keep() has been invoked (the
* buffer may be accessed with mparse_getkeep()).
*/
if (curp->secondary) {
curp->secondary->buf = mandoc_realloc(
curp->secondary->buf,
curp->secondary->sz + pos + 2);
memcpy(curp->secondary->buf +
curp->secondary->sz,
ln.buf, pos);
curp->secondary->sz += pos;
curp->secondary->buf
[curp->secondary->sz] = '\n';
curp->secondary->sz++;
curp->secondary->buf
[curp->secondary->sz] = '\0';
}
rerun:
rr = roff_parseln(curp->roff, curp->line, &ln, &of);
switch (rr) {
case ROFF_REPARSE:
if (REPARSE_LIMIT >= ++curp->reparse_count)
mparse_buf_r(curp, ln, of, 0);
else
mandoc_msg(MANDOCERR_ROFFLOOP, curp,
curp->line, pos, NULL);
pos = 0;
continue;
case ROFF_APPEND:
pos = strlen(ln.buf);
continue;
case ROFF_RERUN:
goto rerun;
case ROFF_IGN:
pos = 0;
continue;
case ROFF_SO:
if ( ! (curp->options & MPARSE_SO) &&
(i >= blk.sz || blk.buf[i] == '\0')) {
curp->sodest = mandoc_strdup(ln.buf + of);
free(ln.buf);
return;
}
/*
* We remove `so' clauses from our lookaside
* buffer because we're going to descend into
* the file recursively.
*/
if (curp->secondary)
curp->secondary->sz -= pos + 1;
save_file = curp->file;
if ((fd = mparse_open(curp, ln.buf + of)) != -1) {
mparse_readfd(curp, fd, ln.buf + of);
close(fd);
curp->file = save_file;
} else {
curp->file = save_file;
mandoc_vmsg(MANDOCERR_SO_FAIL,
curp, curp->line, pos,
".so %s", ln.buf + of);
ln.sz = mandoc_asprintf(&cp,
".sp\nSee the file %s.\n.sp",
ln.buf + of);
free(ln.buf);
ln.buf = cp;
of = 0;
mparse_buf_r(curp, ln, of, 0);
}
pos = 0;
continue;
default:
break;
}
/*
* If input parsers have not been allocated, do so now.
* We keep these instanced between parsers, but set them
* locally per parse routine since we can use different
* parsers with each one.
*/
if (curp->man == NULL ||
curp->man->macroset == MACROSET_NONE)
choose_parser(curp);
/*
* Lastly, push down into the parsers themselves.
* If libroff returns ROFF_TBL, then add it to the
* currently open parse. Since we only get here if
* there does exist data (see tbl_data.c), we're
* guaranteed that something's been allocated.
* Do the same for ROFF_EQN.
*/
if (rr == ROFF_TBL)
while ((span = roff_span(curp->roff)) != NULL)
roff_addtbl(curp->man, span);
else if (rr == ROFF_EQN)
roff_addeqn(curp->man, roff_eqn(curp->roff));
else if ((curp->man->macroset == MACROSET_MDOC ?
mdoc_parseln(curp->man, curp->line, ln.buf, of) :
man_parseln(curp->man, curp->line, ln.buf, of)) == 2)
break;
/* Temporary buffers typically are not full. */
if (0 == start && '\0' == blk.buf[i])
break;
/* Start the next input line. */
pos = 0;
}
free(ln.buf);
}
static int
man_pmacro(struct man *man, int ln, char *buf, int offs)
{
int i, ppos;
enum mant tok;
char mac[5];
struct man_node *n;
if ('"' == buf[offs]) {
man_pmsg(man, ln, offs, MANDOCERR_BADCOMMENT);
return(1);
} else if ('\0' == buf[offs])
return(1);
ppos = offs;
/*
* Copy the first word into a nil-terminated buffer.
* Stop copying when a tab, space, or eoln is encountered.
*/
i = 0;
while (i < 4 && '\0' != buf[offs] &&
' ' != buf[offs] && '\t' != buf[offs])
mac[i++] = buf[offs++];
mac[i] = '\0';
tok = (i > 0 && i < 4) ? man_hash_find(mac) : MAN_MAX;
if (MAN_MAX == tok) {
mandoc_vmsg(MANDOCERR_MACRO, man->parse, ln,
ppos, "%s", buf + ppos - 1);
return(1);
}
/* The macro is sane. Jump to the next word. */
while (buf[offs] && ' ' == buf[offs])
offs++;
/*
* Trailing whitespace. Note that tabs are allowed to be passed
* into the parser as "text", so we only warn about spaces here.
*/
if ('\0' == buf[offs] && ' ' == buf[offs - 1])
man_pmsg(man, ln, offs - 1, MANDOCERR_EOLNSPACE);
/*
* Remove prior ELINE macro, as it's being clobbered by a new
* macro. Note that NSCOPED macros do not close out ELINE
* macros---they don't print text---so we let those slip by.
*/
if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
man->flags & MAN_ELINE) {
n = man->last;
assert(MAN_TEXT != n->type);
/* Remove repeated NSCOPED macros causing ELINE. */
if (MAN_NSCOPED & man_macros[n->tok].flags)
n = n->parent;
mandoc_vmsg(MANDOCERR_LINESCOPE, man->parse, n->line,
n->pos, "%s breaks %s", man_macronames[tok],
man_macronames[n->tok]);
man_node_delete(man, n);
man->flags &= ~MAN_ELINE;
}
/*
* Remove prior BLINE macro that is being clobbered.
*/
if ((man->flags & MAN_BLINE) &&
(MAN_BSCOPE & man_macros[tok].flags)) {
n = man->last;
/* Might be a text node like 8 in
* .TP 8
* .SH foo
*/
if (MAN_TEXT == n->type)
n = n->parent;
/* Remove element that didn't end BLINE, if any. */
if ( ! (MAN_BSCOPE & man_macros[n->tok].flags))
n = n->parent;
assert(MAN_HEAD == n->type);
n = n->parent;
assert(MAN_BLOCK == n->type);
assert(MAN_SCOPED & man_macros[n->tok].flags);
mandoc_vmsg(MANDOCERR_LINESCOPE, man->parse, n->line,
n->pos, "%s breaks %s", man_macronames[tok],
man_macronames[n->tok]);
man_node_delete(man, n);
man->flags &= ~MAN_BLINE;
}
/*
* Save the fact that we're in the next-line for a block. In
* this way, embedded roff instructions can "remember" state
* when they exit.
*/
if (MAN_BLINE & man->flags)
man->flags |= MAN_BPLINE;
/* Call to handler... */
assert(man_macros[tok].fp);
if ( ! (*man_macros[tok].fp)(man, tok, ln, ppos, &offs, buf))
goto err;
/*
* We weren't in a block-line scope when entering the
* above-parsed macro, so return.
*/
if ( ! (MAN_BPLINE & man->flags)) {
man->flags &= ~MAN_ILINE;
return(1);
}
man->flags &= ~MAN_BPLINE;
/*
* If we're in a block scope, then allow this macro to slip by
* without closing scope around it.
*/
if (MAN_ILINE & man->flags) {
man->flags &= ~MAN_ILINE;
return(1);
}
/*
* If we've opened a new next-line element scope, then return
* now, as the next line will close out the block scope.
*/
if (MAN_ELINE & man->flags)
return(1);
/* Close out the block scope opened in the prior line. */
assert(MAN_BLINE & man->flags);
man->flags &= ~MAN_BLINE;
if ( ! man_unscope(man, man->last->parent, MANDOCERR_MAX))
return(0);
return(man_body_alloc(man, ln, ppos, man->last->tok));
err: /* Error out. */
man->flags |= MAN_HALT;
return(0);
}
static int
man_pmacro(struct man *man, int ln, char *buf, int offs)
{
char mac[5];
struct man_node *n;
enum mant tok;
int i, ppos;
int bline;
if ('"' == buf[offs]) {
mandoc_msg(MANDOCERR_COMMENT_BAD, man->parse,
ln, offs, NULL);
return(1);
} else if ('\0' == buf[offs])
return(1);
ppos = offs;
/*
* Copy the first word into a nil-terminated buffer.
* Stop copying when a tab, space, or eoln is encountered.
*/
i = 0;
while (i < 4 && '\0' != buf[offs] && ' ' != buf[offs] &&
'\t' != buf[offs])
mac[i++] = buf[offs++];
mac[i] = '\0';
tok = (i > 0 && i < 4) ? man_hash_find(mac) : MAN_MAX;
if (MAN_MAX == tok) {
mandoc_msg(MANDOCERR_MACRO, man->parse,
ln, ppos, buf + ppos - 1);
return(1);
}
/* The macro is sane. Jump to the next word. */
while (buf[offs] && ' ' == buf[offs])
offs++;
/*
* Trailing whitespace. Note that tabs are allowed to be passed
* into the parser as "text", so we only warn about spaces here.
*/
if ('\0' == buf[offs] && ' ' == buf[offs - 1])
mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
ln, offs - 1, NULL);
/*
* Remove prior ELINE macro, as it's being clobbered by a new
* macro. Note that NSCOPED macros do not close out ELINE
* macros---they don't print text---so we let those slip by.
*/
if ( ! (MAN_NSCOPED & man_macros[tok].flags) &&
man->flags & MAN_ELINE) {
n = man->last;
assert(MAN_TEXT != n->type);
/* Remove repeated NSCOPED macros causing ELINE. */
if (MAN_NSCOPED & man_macros[n->tok].flags)
n = n->parent;
mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse, n->line,
n->pos, "%s breaks %s", man_macronames[tok],
man_macronames[n->tok]);
man_node_delete(man, n);
man->flags &= ~MAN_ELINE;
}
/*
* Remove prior BLINE macro that is being clobbered.
*/
if ((man->flags & MAN_BLINE) &&
(MAN_BSCOPE & man_macros[tok].flags)) {
n = man->last;
/* Might be a text node like 8 in
* .TP 8
* .SH foo
*/
if (MAN_TEXT == n->type)
n = n->parent;
/* Remove element that didn't end BLINE, if any. */
if ( ! (MAN_BSCOPE & man_macros[n->tok].flags))
n = n->parent;
assert(MAN_HEAD == n->type);
n = n->parent;
assert(MAN_BLOCK == n->type);
assert(MAN_SCOPED & man_macros[n->tok].flags);
mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse, n->line,
n->pos, "%s breaks %s", man_macronames[tok],
man_macronames[n->tok]);
man_node_delete(man, n);
man->flags &= ~MAN_BLINE;
}
/* Remember whether we are in next-line scope for a block head. */
bline = man->flags & MAN_BLINE;
/* Call to handler... */
assert(man_macros[tok].fp);
if ( ! (*man_macros[tok].fp)(man, tok, ln, ppos, &offs, buf))
return(0);
/* In quick mode (for mandocdb), abort after the NAME section. */
if (man->quick && MAN_SH == tok) {
n = man->last;
if (MAN_BODY == n->type &&
strcmp(n->prev->child->string, "NAME"))
return(2);
}
/*
* If we are in a next-line scope for a block head,
* close it out now and switch to the body,
* unless the next-line scope is allowed to continue.
*/
if ( ! bline || man->flags & MAN_ELINE ||
man_macros[tok].flags & MAN_NSCOPED)
return(1);
assert(MAN_BLINE & man->flags);
man->flags &= ~MAN_BLINE;
if ( ! man_unscope(man, man->last->parent))
return(0);
return(man_body_alloc(man, ln, ppos, man->last->tok));
}
void
in_line_eoln(MACRO_PROT_ARGS)
{
int la;
char *p;
struct roff_node *n;
roff_elem_alloc(man, line, ppos, tok);
n = man->last;
for (;;) {
if (buf[*pos] != '\0' && (tok == MAN_br ||
tok == MAN_fi || tok == MAN_nf)) {
mandoc_vmsg(MANDOCERR_ARG_SKIP,
man->parse, line, *pos, "%s %s",
man_macronames[tok], buf + *pos);
break;
}
if (buf[*pos] != '\0' && man->last != n &&
(tok == MAN_PD || tok == MAN_ft || tok == MAN_sp)) {
mandoc_vmsg(MANDOCERR_ARG_EXCESS,
man->parse, line, *pos, "%s ... %s",
man_macronames[tok], buf + *pos);
break;
}
la = *pos;
if ( ! man_args(man, line, pos, buf, &p))
break;
if (man_macros[tok].flags & MAN_JOIN &&
man->last->type == ROFFT_TEXT)
roff_word_append(man, p);
else
roff_word_alloc(man, line, la, p);
}
/*
* Append MAN_EOS in case the last snipped argument
* ends with a dot, e.g. `.IR syslog (3).'
*/
if (n != man->last &&
mandoc_eos(man->last->string, strlen(man->last->string)))
man->last->flags |= MAN_EOS;
/*
* If no arguments are specified and this is MAN_SCOPED (i.e.,
* next-line scoped), then set our mode to indicate that we're
* waiting for terms to load into our context.
*/
if (n == man->last && man_macros[tok].flags & MAN_SCOPED) {
assert( ! (man_macros[tok].flags & MAN_NSCOPED));
man->flags |= MAN_ELINE;
return;
}
assert(man->last->type != ROFFT_ROOT);
man->next = ROFF_NEXT_SIBLING;
/* Rewind our element scope. */
for ( ; man->last; man->last = man->last->parent) {
man_state(man, man->last);
if (man->last == n)
break;
}
}
/*
* Parse a macro line, that is, a line beginning with the control
* character.
*/
static int
mdoc_pmacro(struct mdoc *m, int ln, char *buf, int offs)
{
enum mdoct tok;
int i, sv;
char mac[5];
struct mdoc_node *n;
/* Empty post-control lines are ignored. */
if ('"' == buf[offs]) {
mdoc_pmsg(m, ln, offs, MANDOCERR_BADCOMMENT);
return(1);
} else if ('\0' == buf[offs])
return(1);
sv = offs;
/*
* Copy the first word into a nil-terminated buffer.
* Stop copying when a tab, space, or eoln is encountered.
*/
i = 0;
while (i < 4 && '\0' != buf[offs] &&
' ' != buf[offs] && '\t' != buf[offs])
mac[i++] = buf[offs++];
mac[i] = '\0';
tok = (i > 1 || i < 4) ? mdoc_hash_find(mac) : MDOC_MAX;
if (MDOC_MAX == tok) {
mandoc_vmsg(MANDOCERR_MACRO, m->parse,
ln, sv, "%s", buf + sv - 1);
return(1);
}
/* Disregard the first trailing tab, if applicable. */
if ('\t' == buf[offs])
offs++;
/* Jump to the next non-whitespace word. */
while (buf[offs] && ' ' == buf[offs])
offs++;
/*
* Trailing whitespace. Note that tabs are allowed to be passed
* into the parser as "text", so we only warn about spaces here.
*/
if ('\0' == buf[offs] && ' ' == buf[offs - 1])
mdoc_pmsg(m, ln, offs - 1, MANDOCERR_EOLNSPACE);
/*
* If an initial macro or a list invocation, divert directly
* into macro processing.
*/
if (NULL == m->last || MDOC_It == tok || MDOC_El == tok) {
if ( ! mdoc_macro(m, tok, ln, sv, &offs, buf))
goto err;
return(1);
}
n = m->last;
assert(m->last);
/*
* If the first macro of a `Bl -column', open an `It' block
* context around the parsed macro.
*/
if (MDOC_Bl == n->tok && MDOC_BODY == n->type &&
LIST_column == n->norm->Bl.type) {
m->flags |= MDOC_FREECOL;
if ( ! mdoc_macro(m, MDOC_It, ln, sv, &sv, buf))
goto err;
return(1);
}
/*
* If we're following a block-level `It' within a `Bl -column'
* context (perhaps opened in the above block or in ptext()),
* then open an `It' block context around the parsed macro.
*/
if (MDOC_It == n->tok && MDOC_BLOCK == n->type &&
NULL != n->parent &&
MDOC_Bl == n->parent->tok &&
LIST_column == n->parent->norm->Bl.type) {
m->flags |= MDOC_FREECOL;
if ( ! mdoc_macro(m, MDOC_It, ln, sv, &sv, buf))
goto err;
return(1);
}
/* Normal processing of a macro. */
if ( ! mdoc_macro(m, tok, ln, sv, &offs, buf))
goto err;
return(1);
err: /* Error out. */
m->flags |= MDOC_HALT;
return(0);
}
/*
* We are trying to close a block identified by tok,
* but the child block *broken is still open.
* Thus, postpone closing the tok block
* until the rew_sub call closing *broken.
*/
static int
make_pending(struct mdoc_node *broken, enum mdoct tok,
struct mdoc *m, int line, int ppos)
{
struct mdoc_node *breaker;
/*
* Iterate backwards, searching for the block matching tok,
* that is, the block breaking the *broken block.
*/
for (breaker = broken->parent; breaker; breaker = breaker->parent) {
/*
* If the *broken block had already been broken before
* and we encounter its breaker, make the tok block
* pending on the inner breaker.
* Graphically, "[A breaker=[B broken=[C->B B] tok=A] C]"
* becomes "[A broken=[B [C->B B] tok=A] C]"
* and finally "[A [B->A [C->B B] A] C]".
*/
if (breaker == broken->pending) {
broken = breaker;
continue;
}
if (REWIND_THIS != rew_dohalt(tok, MDOC_BLOCK, breaker))
continue;
if (MDOC_BODY == broken->type)
broken = broken->parent;
/*
* Found the breaker.
* If another, outer breaker is already pending on
* the *broken block, we must not clobber the link
* to the outer breaker, but make it pending on the
* new, now inner breaker.
* Graphically, "[A breaker=[B broken=[C->A A] tok=B] C]"
* becomes "[A breaker=[B->A broken=[C A] tok=B] C]"
* and finally "[A [B->A [C->B A] B] C]".
*/
if (broken->pending) {
struct mdoc_node *taker;
/*
* If the breaker had also been broken before,
* it cannot take on the outer breaker itself,
* but must hand it on to its own breakers.
* Graphically, this is the following situation:
* "[A [B breaker=[C->B B] broken=[D->A A] tok=C] D]"
* "[A taker=[B->A breaker=[C->B B] [D->C A] C] D]"
*/
taker = breaker;
while (taker->pending)
taker = taker->pending;
taker->pending = broken->pending;
}
broken->pending = breaker;
mandoc_vmsg(MANDOCERR_SCOPENEST, m->parse, line, ppos,
"%s breaks %s", mdoc_macronames[tok],
mdoc_macronames[broken->tok]);
return(1);
}
/*
* Found no matching block for tok.
* Are you trying to close a block that is not open?
*/
return(0);
}
static int
blk_part_imp(MACRO_PROT_ARGS)
{
int la, nl;
enum mdoct ntok;
enum margserr ac;
char *p;
struct mdoc_node *blk; /* saved block context */
struct mdoc_node *body; /* saved body context */
struct mdoc_node *n;
nl = MDOC_NEWLINE & m->flags;
/*
* A macro that spans to the end of the line. This is generally
* (but not necessarily) called as the first macro. The block
* has a head as the immediate child, which is always empty,
* followed by zero or more opening punctuation nodes, then the
* body (which may be empty, depending on the macro), then zero
* or more closing punctuation nodes.
*/
if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
return(0);
blk = m->last;
if ( ! mdoc_head_alloc(m, line, ppos, tok))
return(0);
if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
return(0);
/*
* Open the body scope "on-demand", that is, after we've
* processed all our the leading delimiters (open parenthesis,
* etc.).
*/
for (body = NULL; ; ) {
la = *pos;
ac = mdoc_args(m, line, pos, buf, tok, &p);
if (ARGS_ERROR == ac)
return(0);
if (ARGS_EOLN == ac)
break;
if (ARGS_PUNCT == ac)
break;
if (NULL == body && ARGS_QWORD != ac &&
DELIM_OPEN == mdoc_isdelim(p)) {
if ( ! dword(m, line, la, p, DELIM_OPEN))
return(0);
continue;
}
if (NULL == body) {
if ( ! mdoc_body_alloc(m, line, ppos, tok))
return(0);
body = m->last;
}
ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
if (MDOC_MAX == ntok) {
if ( ! dword(m, line, la, p, DELIM_MAX))
return(0);
continue;
}
if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
return(0);
break;
}
/* Clean-ups to leave in a consistent state. */
if (NULL == body) {
if ( ! mdoc_body_alloc(m, line, ppos, tok))
return(0);
body = m->last;
}
for (n = body->child; n && n->next; n = n->next)
/* Do nothing. */ ;
/*
* End of sentence spacing: if the last node is a text node and
* has a trailing period, then mark it as being end-of-sentence.
*/
if (n && MDOC_TEXT == n->type && n->string)
if (mandoc_eos(n->string, strlen(n->string), 1))
n->flags |= MDOC_EOS;
/* Up-propagate the end-of-space flag. */
if (n && (MDOC_EOS & n->flags)) {
body->flags |= MDOC_EOS;
body->parent->flags |= MDOC_EOS;
}
/*
* If there is an open sub-block requiring explicit close-out,
* postpone closing out the current block
* until the rew_sub() call closing out the sub-block.
*/
for (n = m->last; n && n != body && n != blk->parent; n = n->parent) {
if (MDOC_BLOCK == n->type &&
MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
! (MDOC_VALID & n->flags)) {
make_pending(n, tok, m, line, ppos);
if ( ! mdoc_endbody_alloc(m, line, ppos,
tok, body, ENDBODY_NOSPACE))
return(0);
return(1);
}
}
/*
* If we can't rewind to our body, then our scope has already
* been closed by another macro (like `Oc' closing `Op'). This
* is ugly behaviour nodding its head to OpenBSD's overwhelming
* crufty use of `Op' breakage.
*/
if (n != body)
mandoc_vmsg(MANDOCERR_SCOPENEST, m->parse, line, ppos,
"%s broken", mdoc_macronames[tok]);
if (n && ! rew_sub(MDOC_BODY, m, tok, line, ppos))
return(0);
/* Standard appending of delimiters. */
if (nl && ! append_delims(m, line, pos, buf))
return(0);
/* Rewind scope, if applicable. */
if (n && ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
return(0);
return(1);
}
static void
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_vmsg(MANDOCERR_TITLE_CASE,
man->parse, n->line,
n->pos + (p - n->string),
"TH %s", n->string);
break;
}
}
man->meta.title = mandoc_strdup(n->string);
} else {
man->meta.title = mandoc_strdup("");
mandoc_msg(MANDOCERR_TH_NOTITLE, man->parse,
nb->line, nb->pos, "TH");
}
/* 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("");
mandoc_vmsg(MANDOCERR_MSEC_MISSING, man->parse,
nb->line, nb->pos, "TH %s", man->meta.title);
}
/* 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("");
mandoc_msg(MANDOCERR_DATE_MISSING, man->parse,
n ? n->line : nb->line,
n ? n->pos : nb->pos, "TH");
}
/* TITLE MSEC DATE ->SOURCE<- VOL */
if (n && (n = n->next))
man->meta.source = mandoc_strdup(n->string);
else if (man->defos != NULL)
man->meta.source = mandoc_strdup(man->defos);
/* 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);
if (n != NULL && (n = n->next) != NULL)
mandoc_vmsg(MANDOCERR_ARG_EXCESS, man->parse,
n->line, n->pos, "TH ... %s", n->string);
/*
* Remove the `TH' node after we've processed it for our
* meta-data.
*/
man_node_delete(man, man->last);
}