/*
* Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
* They're unusual because they're basically free-form text until a
* macro is encountered.
*/
static int
phrase(struct mdoc *m, int line, int ppos, char *buf)
{
int la, pos;
enum margserr ac;
enum mdoct ntok;
char *p;
for (pos = ppos; ; ) {
la = pos;
ac = mdoc_zargs(m, line, &pos, buf, &p);
if (ARGS_ERROR == ac)
return(0);
if (ARGS_EOLN == ac)
break;
ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(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);
return(append_delims(m, line, &pos, buf));
}
return(1);
}
/*
* Parse one word.
* If it is a macro, call it and return 1.
* Otherwise, allocate it and return 0.
*/
static int
macro_or_word(MACRO_PROT_ARGS, int parsed)
{
char *p;
int ntok;
p = buf + ppos;
ntok = TOKEN_NONE;
if (*p == '"')
p++;
else if (parsed && ! (mdoc->flags & MDOC_PHRASELIT))
ntok = lookup(mdoc, tok, line, ppos, p);
if (ntok == TOKEN_NONE) {
dword(mdoc, line, ppos, p, DELIM_MAX, tok == TOKEN_NONE ||
mdoc_macros[tok].flags & MDOC_JOIN);
return 0;
} else {
if (mdoc_macros[tok].fp == in_line_eoln)
rew_elem(mdoc, tok);
mdoc_macro(mdoc, ntok, line, ppos, pos, buf);
if (tok == TOKEN_NONE)
append_delims(mdoc, line, pos, buf);
return 1;
}
}
/* ARGSUSED */
static int
phrase_ta(MACRO_PROT_ARGS)
{
struct mdoc_node *n;
int la;
enum mdoct ntok;
enum margserr ac;
char *p;
/* Make sure we are in a column list or ignore this macro. */
n = mdoc->last;
while (NULL != n && MDOC_Bl != n->tok)
n = n->parent;
if (NULL == n || LIST_column != n->norm->Bl.type) {
mdoc_pmsg(mdoc, line, ppos, MANDOCERR_STRAYTA);
return(1);
}
/* Advance to the next column. */
if ( ! rew_sub(MDOC_BODY, mdoc, MDOC_It, line, ppos))
return(0);
if ( ! mdoc_body_alloc(mdoc, line, ppos, MDOC_It))
return(0);
for (;;) {
la = *pos;
ac = mdoc_zargs(mdoc, line, pos, buf, &p);
if (ARGS_ERROR == ac)
return(0);
if (ARGS_EOLN == ac)
break;
ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(p);
if (MDOC_MAX == ntok) {
if ( ! dword(mdoc, line, la, p, DELIM_MAX,
MDOC_JOIN & mdoc_macros[tok].flags))
return(0);
continue;
}
if ( ! mdoc_macro(mdoc, ntok, line, la, pos, buf))
return(0);
return(append_delims(mdoc, line, pos, buf));
}
return(1);
}
/* ARGSUSED */
static int
phrase_ta(MACRO_PROT_ARGS)
{
int la;
enum mdoct ntok;
enum margserr ac;
char *p;
/*
* FIXME: this is overly restrictive: if the `Ta' is unexpected,
* it should simply error out with ARGSLOST.
*/
if ( ! rew_sub(MDOC_BODY, m, MDOC_It, line, ppos))
return(0);
if ( ! mdoc_body_alloc(m, line, ppos, MDOC_It))
return(0);
for (;;) {
la = *pos;
ac = mdoc_zargs(m, line, pos, buf, &p);
if (ARGS_ERROR == ac)
return(0);
if (ARGS_EOLN == ac)
break;
ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup_raw(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);
return(append_delims(m, line, pos, buf));
}
return(1);
}
/*
* 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
in_line(MACRO_PROT_ARGS)
{
int la, scope, cnt, firstarg, mayopen, nc, nl;
int ntok;
enum margserr ac;
enum mdelim d;
struct mdoc_arg *arg;
char *p;
nl = MDOC_NEWLINE & mdoc->flags;
/*
* Whether we allow ignored elements (those without content,
* usually because of reserved words) to squeak by.
*/
switch (tok) {
case MDOC_An:
case MDOC_Ar:
case MDOC_Fl:
case MDOC_Mt:
case MDOC_Nm:
case MDOC_Pa:
nc = 1;
break;
default:
nc = 0;
break;
}
mdoc_argv(mdoc, line, tok, &arg, pos, buf);
d = DELIM_NONE;
firstarg = 1;
mayopen = 1;
for (cnt = scope = 0;; ) {
la = *pos;
ac = mdoc_args(mdoc, line, pos, buf, tok, &p);
/*
* At the end of a macro line,
* opening delimiters do not suppress spacing.
*/
if (ac == ARGS_EOLN) {
if (d == DELIM_OPEN)
mdoc->last->flags &= ~MDOC_DELIMO;
break;
}
/*
* The rest of the macro line is only punctuation,
* to be handled by append_delims().
* If there were no other arguments,
* do not allow the first one to suppress spacing,
* even if it turns out to be a closing one.
*/
if (ac == ARGS_PUNCT) {
if (cnt == 0 && (nc == 0 || tok == MDOC_An))
mdoc->flags |= MDOC_NODELIMC;
break;
}
ntok = (ac == ARGS_QWORD || (tok == MDOC_Fn && !cnt)) ?
TOKEN_NONE : lookup(mdoc, tok, line, la, p);
/*
* In this case, we've located a submacro and must
* execute it. Close out scope, if open. If no
* elements have been generated, either create one (nc)
* or raise a warning.
*/
if (ntok != TOKEN_NONE) {
if (scope)
rew_elem(mdoc, tok);
if (nc && ! cnt) {
mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
rew_last(mdoc, mdoc->last);
} else if ( ! nc && ! cnt) {
mdoc_argv_free(arg);
mandoc_msg(MANDOCERR_MACRO_EMPTY,
mdoc->parse, line, ppos,
mdoc_macronames[tok]);
}
mdoc_macro(mdoc, ntok, line, la, pos, buf);
if (nl)
append_delims(mdoc, line, pos, buf);
return;
}
/*
* Non-quote-enclosed punctuation. Set up our scope, if
* a word; rewind the scope, if a delimiter; then append
* the word.
*/
d = ac == ARGS_QWORD ? DELIM_NONE : mdoc_isdelim(p);
if (DELIM_NONE != d) {
/*
* If we encounter closing punctuation, no word
* has been emitted, no scope is open, and we're
* allowed to have an empty element, then start
* a new scope.
*/
if ((d == DELIM_CLOSE ||
(d == DELIM_MIDDLE && tok == MDOC_Fl)) &&
!cnt && !scope && nc && mayopen) {
mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
scope = 1;
cnt++;
if (tok == MDOC_Nm)
mayopen = 0;
}
/*
* Close out our scope, if one is open, before
* any punctuation.
*/
if (scope)
rew_elem(mdoc, tok);
scope = 0;
if (tok == MDOC_Fn)
mayopen = 0;
} else if (mayopen && !scope) {
mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
scope = 1;
cnt++;
}
dword(mdoc, line, la, p, d,
MDOC_JOIN & mdoc_macros[tok].flags);
/*
* If the first argument is a closing delimiter,
* do not suppress spacing before it.
*/
if (firstarg && d == DELIM_CLOSE && !nc)
mdoc->last->flags &= ~MDOC_DELIMC;
firstarg = 0;
/*
* `Fl' macros have their scope re-opened with each new
* word so that the `-' can be added to each one without
* having to parse out spaces.
*/
if (scope && tok == MDOC_Fl) {
rew_elem(mdoc, tok);
scope = 0;
}
}
if (scope)
rew_elem(mdoc, tok);
/*
* If no elements have been collected and we're allowed to have
* empties (nc), open a scope and close it out. Otherwise,
* raise a warning.
*/
if ( ! cnt) {
if (nc) {
mdoc_elem_alloc(mdoc, line, ppos, tok, arg);
rew_last(mdoc, mdoc->last);
} else {
mdoc_argv_free(arg);
mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
line, ppos, mdoc_macronames[tok]);
}
}
if (nl)
append_delims(mdoc, line, pos, buf);
}
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);
}
/*
* Close out block partial/full explicit.
*/
static int
blk_exp_close(MACRO_PROT_ARGS)
{
int j, lastarg, maxargs, flushed, nl;
enum margserr ac;
enum mdoct ntok;
char *p;
nl = MDOC_NEWLINE & m->flags;
switch (tok) {
case (MDOC_Ec):
maxargs = 1;
break;
default:
maxargs = 0;
break;
}
if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) {
/* FIXME: do this in validate */
if (buf[*pos])
if ( ! mdoc_pmsg(m, line, ppos, MANDOCERR_ARGSLOST))
return(0);
if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
return(0);
return(rew_sub(MDOC_BLOCK, m, tok, line, ppos));
}
if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
return(0);
if (maxargs > 0)
if ( ! mdoc_tail_alloc(m, line, ppos, rew_alt(tok)))
return(0);
for (flushed = j = 0; ; j++) {
lastarg = *pos;
if (j == maxargs && ! flushed) {
if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
return(0);
flushed = 1;
}
ac = mdoc_args(m, line, pos, buf, tok, &p);
if (ARGS_ERROR == ac)
return(0);
if (ARGS_PUNCT == ac)
break;
if (ARGS_EOLN == ac)
break;
ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
if (MDOC_MAX == ntok) {
if ( ! mdoc_word_alloc(m, line, lastarg, p))
return(0);
continue;
}
if ( ! flushed) {
if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
return(0);
flushed = 1;
}
if ( ! mdoc_macro(m, ntok, line, lastarg, pos, buf))
return(0);
break;
}
if ( ! flushed && ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
return(0);
if ( ! nl)
return(1);
return(append_delims(m, line, pos, buf));
}
/*
* Parse free-form text, that is, a line that does not begin with the
* control character.
*/
static int
mdoc_ptext(struct mdoc *m, int line, char *buf, int offs)
{
char *c, *ws, *end;
struct mdoc_node *n;
/* Ignore bogus comments. */
if ('\\' == buf[offs] &&
'.' == buf[offs + 1] &&
'"' == buf[offs + 2]) {
mdoc_pmsg(m, line, offs, MANDOCERR_BADCOMMENT);
return(1);
}
/* No text before an initial macro. */
if (SEC_NONE == m->lastnamed) {
mdoc_pmsg(m, line, offs, MANDOCERR_NOTEXT);
return(1);
}
assert(m->last);
n = m->last;
/*
* Divert directly to list processing if we're encountering a
* columnar MDOC_BLOCK with or without a prior MDOC_BLOCK entry
* (a MDOC_BODY means it's already open, in which case we should
* process within its context in the normal way).
*/
if (MDOC_Bl == n->tok && MDOC_BODY == n->type &&
LIST_column == n->norm->Bl.type) {
/* `Bl' is open without any children. */
m->flags |= MDOC_FREECOL;
return(mdoc_macro(m, MDOC_It, line, offs, &offs, buf));
}
if (MDOC_It == n->tok && MDOC_BLOCK == n->type &&
NULL != n->parent &&
MDOC_Bl == n->parent->tok &&
LIST_column == n->parent->norm->Bl.type) {
/* `Bl' has block-level `It' children. */
m->flags |= MDOC_FREECOL;
return(mdoc_macro(m, MDOC_It, line, offs, &offs, buf));
}
/*
* Search for the beginning of unescaped trailing whitespace (ws)
* and for the first character not to be output (end).
*/
/* FIXME: replace with strcspn(). */
ws = NULL;
for (c = end = buf + offs; *c; c++) {
switch (*c) {
case '-':
if (mandoc_hyph(buf + offs, c))
*c = ASCII_HYPH;
ws = NULL;
break;
case ' ':
if (NULL == ws)
ws = c;
continue;
case '\t':
/*
* Always warn about trailing tabs,
* even outside literal context,
* where they should be put on the next line.
*/
if (NULL == ws)
ws = c;
/*
* Strip trailing tabs in literal context only;
* outside, they affect the next line.
*/
if (MDOC_LITERAL & m->flags)
continue;
break;
case '\\':
/* Skip the escaped character, too, if any. */
if (c[1])
c++;
/* FALLTHROUGH */
default:
ws = NULL;
break;
}
end = c + 1;
}
*end = '\0';
if (ws)
mdoc_pmsg(m, line, (int)(ws-buf), MANDOCERR_EOLNSPACE);
if ('\0' == buf[offs] && ! (MDOC_LITERAL & m->flags)) {
mdoc_pmsg(m, line, (int)(c-buf), MANDOCERR_NOBLANKLN);
/*
* Insert a `sp' in the case of a blank line. Technically,
* blank lines aren't allowed, but enough manuals assume this
* behaviour that we want to work around it.
*/
if ( ! mdoc_elem_alloc(m, line, offs, MDOC_sp, NULL))
return(0);
m->next = MDOC_NEXT_SIBLING;
return(1);
}
if ( ! mdoc_word_alloc(m, line, offs, buf+offs))
return(0);
if (MDOC_LITERAL & m->flags)
return(1);
/*
* End-of-sentence check. If the last character is an unescaped
* EOS character, then flag the node as being the end of a
* sentence. The front-end will know how to interpret this.
*/
assert(buf < end);
if (mandoc_eos(buf+offs, (size_t)(end-buf-offs), 0))
m->last->flags |= MDOC_EOS;
return(1);
}
/*
* 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, j, sv;
char mac[5];
struct mdoc_node *n;
/* Empty lines are ignored. */
offs++;
if ('\0' == buf[offs])
return(1);
i = offs;
/* Accept tabs/whitespace after the initial control char. */
if (' ' == buf[i] || '\t' == buf[i]) {
i++;
while (buf[i] && (' ' == buf[i] || '\t' == buf[i]))
i++;
if ('\0' == buf[i])
return(1);
}
sv = i;
/*
* Copy the first word into a nil-terminated buffer.
* Stop copying when a tab, space, or eoln is encountered.
*/
j = 0;
while (j < 4 && '\0' != buf[i] && ' ' != buf[i] && '\t' != buf[i])
mac[j++] = buf[i++];
mac[j] = '\0';
tok = (j > 1 || j < 4) ? mdoc_hash_find(mac) : MDOC_MAX;
if (MDOC_MAX == tok) {
mdoc_vmsg(m, MANDOCERR_MACRO, ln, sv, "%s", buf + sv - 1);
return(1);
}
/* Disregard the first trailing tab, if applicable. */
if ('\t' == buf[i])
i++;
/* Jump to the next non-whitespace word. */
while (buf[i] && ' ' == buf[i])
i++;
/*
* 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[i] && ' ' == buf[i - 1])
mdoc_pmsg(m, ln, i - 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, &i, 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, &i, buf))
goto err;
return(1);
err: /* Error out. */
m->flags |= MDOC_HALT;
return(0);
}
static int
in_line(MACRO_PROT_ARGS)
{
int la, scope, cnt, nc, nl;
enum margverr av;
enum mdoct ntok;
enum margserr ac;
enum mdelim d;
struct mdoc_arg *arg;
char *p;
nl = MDOC_NEWLINE & m->flags;
/*
* Whether we allow ignored elements (those without content,
* usually because of reserved words) to squeak by.
*/
switch (tok) {
case (MDOC_An):
/* FALLTHROUGH */
case (MDOC_Ar):
/* FALLTHROUGH */
case (MDOC_Fl):
/* FALLTHROUGH */
case (MDOC_Mt):
/* FALLTHROUGH */
case (MDOC_Nm):
/* FALLTHROUGH */
case (MDOC_Pa):
nc = 1;
break;
default:
nc = 0;
break;
}
for (arg = NULL;; ) {
la = *pos;
av = mdoc_argv(m, line, tok, &arg, pos, buf);
if (ARGV_WORD == av) {
*pos = la;
break;
}
if (ARGV_EOLN == av)
break;
if (ARGV_ARG == av)
continue;
mdoc_argv_free(arg);
return(0);
}
for (cnt = scope = 0;; ) {
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;
ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
/*
* In this case, we've located a submacro and must
* execute it. Close out scope, if open. If no
* elements have been generated, either create one (nc)
* or raise a warning.
*/
if (MDOC_MAX != ntok) {
if (scope && ! rew_elem(m, tok))
return(0);
if (nc && 0 == cnt) {
if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
return(0);
if ( ! rew_last(m, m->last))
return(0);
} else if ( ! nc && 0 == cnt) {
mdoc_argv_free(arg);
mdoc_pmsg(m, line, ppos, MANDOCERR_MACROEMPTY);
}
if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
return(0);
if ( ! nl)
return(1);
return(append_delims(m, line, pos, buf));
}
/*
* Non-quote-enclosed punctuation. Set up our scope, if
* a word; rewind the scope, if a delimiter; then append
* the word.
*/
d = ARGS_QWORD == ac ? DELIM_NONE : mdoc_isdelim(p);
if (DELIM_NONE != d) {
/*
* If we encounter closing punctuation, no word
* has been omitted, no scope is open, and we're
* allowed to have an empty element, then start
* a new scope. `Ar', `Fl', and `Li', only do
* this once per invocation. There may be more
* of these (all of them?).
*/
if (0 == cnt && (nc || MDOC_Li == tok) &&
DELIM_CLOSE == d && ! scope) {
if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
return(0);
if (MDOC_Ar == tok || MDOC_Li == tok ||
MDOC_Fl == tok)
cnt++;
scope = 1;
}
/*
* Close out our scope, if one is open, before
* any punctuation.
*/
if (scope && ! rew_elem(m, tok))
return(0);
scope = 0;
} else if ( ! scope) {
if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
return(0);
scope = 1;
}
if (DELIM_NONE == d)
cnt++;
if ( ! dword(m, line, la, p, d))
return(0);
/*
* `Fl' macros have their scope re-opened with each new
* word so that the `-' can be added to each one without
* having to parse out spaces.
*/
if (scope && MDOC_Fl == tok) {
if ( ! rew_elem(m, tok))
return(0);
scope = 0;
}
}
if (scope && ! rew_elem(m, tok))
return(0);
/*
* If no elements have been collected and we're allowed to have
* empties (nc), open a scope and close it out. Otherwise,
* raise a warning.
*/
if (nc && 0 == cnt) {
if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
return(0);
if ( ! rew_last(m, m->last))
return(0);
} else if ( ! nc && 0 == cnt) {
mdoc_argv_free(arg);
mdoc_pmsg(m, line, ppos, MANDOCERR_MACROEMPTY);
}
if ( ! nl)
return(1);
return(append_delims(m, line, pos, buf));
}
static int
blk_full(MACRO_PROT_ARGS)
{
int la, nl, nparsed;
struct mdoc_arg *arg;
struct mdoc_node *head; /* save of head macro */
struct mdoc_node *body; /* save of body macro */
struct mdoc_node *n;
enum mdoc_type mtt;
enum mdoct ntok;
enum margserr ac, lac;
enum margverr av;
char *p;
nl = MDOC_NEWLINE & m->flags;
/* Close out prior implicit scope. */
if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
return(0);
if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
return(0);
}
/*
* 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.
*/
for (arg = NULL;; ) {
la = *pos;
av = mdoc_argv(m, line, tok, &arg, pos, buf);
if (ARGV_WORD == av) {
*pos = la;
break;
}
if (ARGV_EOLN == av)
break;
if (ARGV_ARG == av)
continue;
mdoc_argv_free(arg);
return(0);
}
if ( ! mdoc_block_alloc(m, line, ppos, tok, arg))
return(0);
head = body = NULL;
/*
* Exception: Heads of `It' macros in `-diag' lists are not
* parsed, even though `It' macros in general are parsed.
*/
nparsed = MDOC_It == tok &&
MDOC_Bl == m->last->parent->tok &&
LIST_diag == m->last->parent->norm->Bl.type;
/*
* The `Nd' macro has all arguments in its body: it's a hybrid
* of block partial-explicit and full-implicit. Stupid.
*/
if (MDOC_Nd == tok) {
if ( ! mdoc_head_alloc(m, line, ppos, tok))
return(0);
head = m->last;
if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
return(0);
if ( ! mdoc_body_alloc(m, line, ppos, tok))
return(0);
body = m->last;
}
ac = ARGS_ERROR;
for ( ; ; ) {
la = *pos;
/* Initialise last-phrase-type with ARGS_PEND. */
lac = ARGS_ERROR == ac ? ARGS_PEND : ac;
ac = mdoc_args(m, line, pos, buf, tok, &p);
if (ARGS_PUNCT == ac)
break;
if (ARGS_ERROR == ac)
return(0);
if (ARGS_EOLN == ac) {
if (ARGS_PPHRASE != lac && ARGS_PHRASE != lac)
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 ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
return(0);
if ( ! mdoc_body_alloc(m, line, ppos, tok))
return(0);
body = m->last;
break;
}
/*
* Emit leading punctuation (i.e., punctuation before
* the MDOC_HEAD) for non-phrase types.
*/
if (NULL == head &&
ARGS_PEND != ac &&
ARGS_PHRASE != ac &&
ARGS_PPHRASE != ac &&
ARGS_QWORD != ac &&
DELIM_OPEN == mdoc_isdelim(p)) {
if ( ! dword(m, line, la, p, DELIM_OPEN))
return(0);
continue;
}
/* Open a head if one hasn't been opened. */
if (NULL == head) {
if ( ! mdoc_head_alloc(m, line, ppos, tok))
return(0);
head = m->last;
}
if (ARGS_PHRASE == ac ||
ARGS_PEND == ac ||
ARGS_PPHRASE == ac) {
/*
* If we haven't opened a body yet, rewind the
* head; if we have, rewind that instead.
*/
mtt = body ? MDOC_BODY : MDOC_HEAD;
if ( ! rew_sub(mtt, m, tok, line, ppos))
return(0);
/* Then allocate our body context. */
if ( ! mdoc_body_alloc(m, line, ppos, tok))
return(0);
body = m->last;
/*
* Process phrases: set whether we're in a
* partial-phrase (this effects line handling)
* then call down into the phrase parser.
*/
if (ARGS_PPHRASE == ac)
m->flags |= MDOC_PPHRASE;
if (ARGS_PEND == ac && ARGS_PPHRASE == lac)
m->flags |= MDOC_PPHRASE;
if ( ! phrase(m, line, la, buf))
return(0);
m->flags &= ~MDOC_PPHRASE;
continue;
}
ntok = nparsed || 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;
}
if (NULL == head) {
if ( ! mdoc_head_alloc(m, line, ppos, tok))
return(0);
head = m->last;
}
if (nl && ! append_delims(m, line, pos, buf))
return(0);
/* If we've already opened our body, exit now. */
if (NULL != body)
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_sub() call closing out that
* sub-block.
*/
for (n = m->last; n && n != head; n = n->parent) {
if (MDOC_BLOCK == n->type &&
MDOC_EXPLICIT & mdoc_macros[n->tok].flags &&
! (MDOC_VALID & n->flags)) {
n->pending = head;
return(1);
}
}
/* Close out scopes to remain in a consistent state. */
if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
return(0);
if ( ! mdoc_body_alloc(m, line, ppos, tok))
return(0);
out:
if ( ! (MDOC_FREECOL & m->flags))
return(1);
if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
return(0);
if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
return(0);
m->flags &= ~MDOC_FREECOL;
return(1);
}
/* ARGSUSED */
static int
in_line_argn(MACRO_PROT_ARGS)
{
int la, flushed, j, maxargs, nl;
enum margserr ac;
enum margverr av;
struct mdoc_arg *arg;
char *p;
enum mdoct ntok;
nl = MDOC_NEWLINE & m->flags;
/*
* 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):
/* FALLTHROUGH */
case (MDOC_No):
/* FALLTHROUGH */
case (MDOC_Ns):
/* FALLTHROUGH */
case (MDOC_Ux):
maxargs = 0;
break;
case (MDOC_Xr):
maxargs = 2;
break;
default:
maxargs = 1;
break;
}
for (arg = NULL; ; ) {
la = *pos;
av = mdoc_argv(m, line, tok, &arg, pos, buf);
if (ARGV_WORD == av) {
*pos = la;
break;
}
if (ARGV_EOLN == av)
break;
if (ARGV_ARG == av)
continue;
mdoc_argv_free(arg);
return(0);
}
for (flushed = j = 0; ; ) {
la = *pos;
ac = mdoc_args(m, line, pos, buf, tok, &p);
if (ARGS_ERROR == ac)
return(0);
if (ARGS_PUNCT == ac)
break;
if (ARGS_EOLN == ac)
break;
if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
ARGS_QWORD != ac &&
0 == j && DELIM_OPEN == mdoc_isdelim(p)) {
if ( ! mdoc_word_alloc(m, line, la, p))
return(0);
continue;
} else if (0 == j)
if ( ! mdoc_elem_alloc(m, line, la, tok, arg))
return(0);
if (j == maxargs && ! flushed) {
if ( ! rew_elem(m, tok))
return(0);
flushed = 1;
}
ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
if (MDOC_MAX != ntok) {
if ( ! flushed && ! rew_elem(m, tok))
return(0);
flushed = 1;
if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
return(0);
j++;
break;
}
if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
ARGS_QWORD != ac &&
! flushed &&
DELIM_NONE != mdoc_isdelim(p)) {
if ( ! rew_elem(m, tok))
return(0);
flushed = 1;
}
/*
* XXX: this is a hack to work around groff's ugliness
* as regards `Xr' and extraneous arguments. It should
* ideally be deprecated behaviour, but because this is
* code is no here, it's unlikely to be removed.
*/
#ifdef __OpenBSD__
if (MDOC_Xr == tok && j == maxargs) {
if ( ! mdoc_elem_alloc(m, line, la, MDOC_Ns, NULL))
return(0);
if ( ! rew_elem(m, MDOC_Ns))
return(0);
}
#endif
if ( ! mdoc_word_alloc(m, line, la, p))
return(0);
j++;
}
if (0 == j && ! mdoc_elem_alloc(m, line, la, tok, arg))
return(0);
/* Close out in a consistent state. */
if ( ! flushed && ! rew_elem(m, tok))
return(0);
if ( ! nl)
return(1);
return(append_delims(m, line, pos, buf));
}
/*
* Close out block partial/full explicit.
*/
static int
blk_exp_close(MACRO_PROT_ARGS)
{
struct mdoc_node *body; /* Our own body. */
struct mdoc_node *later; /* A sub-block starting later. */
struct mdoc_node *n; /* For searching backwards. */
int j, lastarg, maxargs, flushed, nl;
enum margserr ac;
enum mdoct atok, ntok;
char *p;
nl = MDOC_NEWLINE & m->flags;
switch (tok) {
case (MDOC_Ec):
maxargs = 1;
break;
default:
maxargs = 0;
break;
}
/*
* Search backwards for beginnings of blocks,
* both of our own and of pending sub-blocks.
*/
atok = rew_alt(tok);
body = later = NULL;
for (n = m->last; n; n = n->parent) {
if (MDOC_VALID & n->flags)
continue;
/* Remember the start of our own body. */
if (MDOC_BODY == n->type && atok == n->tok) {
if (ENDBODY_NOT == n->end)
body = n;
continue;
}
if (MDOC_BLOCK != n->type || MDOC_Nm == n->tok)
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 (NULL == later)
break;
/*
* When there is a pending sub block,
* postpone closing out the current block
* until the rew_sub() closing out the sub-block.
*/
make_pending(later, tok, m, line, ppos);
/*
* Mark the place where the formatting - but not
* the scope - of the current block ends.
*/
if ( ! mdoc_endbody_alloc(m, line, ppos,
atok, body, ENDBODY_SPACE))
return(0);
break;
}
/*
* When finding an open sub block, remember the last
* open explicit block, or, in case there are only
* implicit ones, the first open implicit block.
*/
if (later &&
MDOC_EXPLICIT & mdoc_macros[later->tok].flags)
continue;
if (MDOC_CALLABLE & mdoc_macros[n->tok].flags)
later = n;
}
if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) {
/* FIXME: do this in validate */
if (buf[*pos])
mdoc_pmsg(m, line, ppos, MANDOCERR_ARGSLOST);
if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
return(0);
return(rew_sub(MDOC_BLOCK, m, tok, line, ppos));
}
if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos))
return(0);
if (NULL == later && maxargs > 0)
if ( ! mdoc_tail_alloc(m, line, ppos, rew_alt(tok)))
return(0);
for (flushed = j = 0; ; j++) {
lastarg = *pos;
if (j == maxargs && ! flushed) {
if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
return(0);
flushed = 1;
}
ac = mdoc_args(m, line, pos, buf, tok, &p);
if (ARGS_ERROR == ac)
return(0);
if (ARGS_PUNCT == ac)
break;
if (ARGS_EOLN == ac)
break;
ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
if (MDOC_MAX == ntok) {
if ( ! dword(m, line, lastarg, p, DELIM_MAX))
return(0);
continue;
}
if ( ! flushed) {
if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
return(0);
flushed = 1;
}
if ( ! mdoc_macro(m, ntok, line, lastarg, pos, buf))
return(0);
break;
}
if ( ! flushed && ! rew_sub(MDOC_BLOCK, m, tok, line, ppos))
return(0);
if ( ! nl)
return(1);
return(append_delims(m, line, pos, buf));
}
/*
* Parse a macro line, that is, a line beginning with the control
* character.
*/
static int
mdoc_pmacro(struct mdoc *mdoc, int ln, char *buf, int offs)
{
struct mdoc_node *n;
const char *cp;
enum mdoct tok;
int i, sv;
char mac[5];
sv = offs;
/*
* Copy the first word into a nil-terminated buffer.
* Stop when a space, tab, escape, or eoln is encountered.
*/
i = 0;
while (i < 4 && strchr(" \t\\", buf[offs]) == NULL)
mac[i++] = buf[offs++];
mac[i] = '\0';
tok = (i > 1 && i < 4) ? mdoc_hash_find(mac) : MDOC_MAX;
if (tok == MDOC_MAX) {
mandoc_msg(MANDOCERR_MACRO, mdoc->parse,
ln, sv, buf + sv - 1);
return(1);
}
/* Skip a leading escape sequence or tab. */
switch (buf[offs]) {
case '\\':
cp = buf + offs + 1;
mandoc_escape(&cp, NULL, NULL);
offs = cp - buf;
break;
case '\t':
offs++;
break;
default:
break;
}
/* 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])
mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse,
ln, offs - 1, NULL);
/*
* If an initial macro or a list invocation, divert directly
* into macro processing.
*/
if (NULL == mdoc->last || MDOC_It == tok || MDOC_El == tok) {
mdoc_macro(mdoc, tok, ln, sv, &offs, buf);
return(1);
}
n = mdoc->last;
assert(mdoc->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) {
mdoc->flags |= MDOC_FREECOL;
mdoc_macro(mdoc, MDOC_It, ln, sv, &sv, buf);
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) {
mdoc->flags |= MDOC_FREECOL;
mdoc_macro(mdoc, MDOC_It, ln, sv, &sv, buf);
return(1);
}
/* Normal processing of a macro. */
mdoc_macro(mdoc, tok, ln, sv, &offs, buf);
/* In quick mode (for mandocdb), abort after the NAME section. */
if (mdoc->quick && MDOC_Sh == tok &&
SEC_NAME != mdoc->last->sec)
return(2);
return(1);
}
static int
in_line_eoln(MACRO_PROT_ARGS)
{
int la;
enum margserr ac;
enum margverr av;
struct mdoc_arg *arg;
char *p;
enum mdoct ntok;
assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));
if (tok == MDOC_Pp)
rew_sub(MDOC_BLOCK, m, MDOC_Nm, line, ppos);
/* Parse macro arguments. */
for (arg = NULL; ; ) {
la = *pos;
av = mdoc_argv(m, line, tok, &arg, pos, buf);
if (ARGV_WORD == av) {
*pos = la;
break;
}
if (ARGV_EOLN == av)
break;
if (ARGV_ARG == av)
continue;
mdoc_argv_free(arg);
return(0);
}
/* Open element scope. */
if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg))
return(0);
/* Parse argument terms. */
for (;;) {
la = *pos;
ac = mdoc_args(m, line, pos, buf, tok, &p);
if (ARGS_ERROR == ac)
return(0);
if (ARGS_EOLN == ac)
break;
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 ( ! rew_elem(m, tok))
return(0);
return(mdoc_macro(m, ntok, line, la, pos, buf));
}
/* Close out (no delimiters). */
return(rew_elem(m, tok));
}
/* ARGSUSED */
static int
in_line_argn(MACRO_PROT_ARGS)
{
int la, flushed, j, maxargs, nl;
enum margserr ac;
enum margverr av;
struct mdoc_arg *arg;
char *p;
enum mdoct ntok;
nl = MDOC_NEWLINE & m->flags;
/*
* 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):
/* FALLTHROUGH */
case (MDOC_No):
/* FALLTHROUGH */
case (MDOC_Ns):
/* FALLTHROUGH */
case (MDOC_Ux):
maxargs = 0;
break;
case (MDOC_Bx):
/* FALLTHROUGH */
case (MDOC_Xr):
maxargs = 2;
break;
default:
maxargs = 1;
break;
}
for (arg = NULL; ; ) {
la = *pos;
av = mdoc_argv(m, line, tok, &arg, pos, buf);
if (ARGV_WORD == av) {
*pos = la;
break;
}
if (ARGV_EOLN == av)
break;
if (ARGV_ARG == av)
continue;
mdoc_argv_free(arg);
return(0);
}
for (flushed = j = 0; ; ) {
la = *pos;
ac = mdoc_args(m, line, pos, buf, tok, &p);
if (ARGS_ERROR == ac)
return(0);
if (ARGS_PUNCT == ac)
break;
if (ARGS_EOLN == ac)
break;
if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
ARGS_QWORD != ac && 0 == j &&
DELIM_OPEN == mdoc_isdelim(p)) {
if ( ! dword(m, line, la, p, DELIM_OPEN))
return(0);
continue;
} else if (0 == j)
if ( ! mdoc_elem_alloc(m, line, la, tok, arg))
return(0);
if (j == maxargs && ! flushed) {
if ( ! rew_elem(m, tok))
return(0);
flushed = 1;
}
ntok = ARGS_QWORD == ac ? MDOC_MAX : lookup(tok, p);
if (MDOC_MAX != ntok) {
if ( ! flushed && ! rew_elem(m, tok))
return(0);
flushed = 1;
if ( ! mdoc_macro(m, ntok, line, la, pos, buf))
return(0);
j++;
break;
}
if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) &&
ARGS_QWORD != ac &&
! flushed &&
DELIM_NONE != mdoc_isdelim(p)) {
if ( ! rew_elem(m, tok))
return(0);
flushed = 1;
}
if ( ! dword(m, line, la, p, DELIM_MAX))
return(0);
j++;
}
if (0 == j && ! mdoc_elem_alloc(m, line, la, tok, arg))
return(0);
/* Close out in a consistent state. */
if ( ! flushed && ! rew_elem(m, tok))
return(0);
if ( ! nl)
return(1);
return(append_delims(m, line, pos, buf));
}
static int
blk_part_exp(MACRO_PROT_ARGS)
{
int la, nl;
enum margserr ac;
struct mdoc_node *head; /* keep track of head */
struct mdoc_node *body; /* keep track of body */
char *p;
enum mdoct ntok;
nl = MDOC_NEWLINE & m->flags;
/*
* The opening of an explicit macro having zero or more leading
* punctuation nodes; a head with optional single element (the
* case of `Eo'); and a body that may be empty.
*/
if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL))
return(0);
for (head = body = NULL; ; ) {
la = *pos;
ac = mdoc_args(m, line, pos, buf, tok, &p);
if (ARGS_ERROR == ac)
return(0);
if (ARGS_PUNCT == ac)
break;
if (ARGS_EOLN == ac)
break;
/* Flush out leading punctuation. */
if (NULL == head && ARGS_QWORD != ac &&
DELIM_OPEN == mdoc_isdelim(p)) {
assert(NULL == body);
if ( ! dword(m, line, la, p, DELIM_OPEN))
return(0);
continue;
}
if (NULL == head) {
assert(NULL == body);
if ( ! mdoc_head_alloc(m, line, ppos, tok))
return(0);
head = m->last;
}
/*
* `Eo' gobbles any data into the head, but most other
* macros just immediately close out and begin the body.
*/
if (NULL == body) {
assert(head);
/* No check whether it's a macro! */
if (MDOC_Eo == tok)
if ( ! dword(m, line, la, p, DELIM_MAX))
return(0);
if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
return(0);
if ( ! mdoc_body_alloc(m, line, ppos, tok))
return(0);
body = m->last;
if (MDOC_Eo == tok)
continue;
}
assert(NULL != head && NULL != body);
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-up to leave in a consistent state. */
if (NULL == head)
if ( ! mdoc_head_alloc(m, line, ppos, tok))
return(0);
if (NULL == body) {
if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos))
return(0);
if ( ! mdoc_body_alloc(m, line, ppos, tok))
return(0);
}
/* Standard appending of delimiters. */
if ( ! nl)
return(1);
return(append_delims(m, line, pos, buf));
}
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);
}
