/* ARGSUSED */
int
blk_close(MACRO_PROT_ARGS)
{
enum mant ntok;
const struct man_node *nn;
switch (tok) {
case (MAN_RE):
ntok = MAN_RS;
break;
case (MAN_UE):
ntok = MAN_UR;
break;
default:
abort();
/* NOTREACHED */
}
for (nn = man->last->parent; nn; nn = nn->parent)
if (ntok == nn->tok && MAN_BLOCK == nn->type)
break;
if (NULL == nn) {
man_pmsg(man, line, ppos, MANDOCERR_NOSCOPE);
if ( ! rew_scope(MAN_BLOCK, man, MAN_PP))
return(0);
} else
man_unscope(man, nn, MANDOCERR_MAX);
return(1);
}
void
man_endparse(struct roff_man *man)
{
man_unscope(man, man->first);
man->flags &= ~MAN_LITERAL;
}
/*
* Rewinding entails ascending the parse tree until a coherent point,
* for example, the `SH' macro will close out any intervening `SS'
* scopes. When a scope is closed, it must be validated and actioned.
*/
static int
rew_scope(enum man_type type, struct man *man, enum mant tok)
{
struct man_node *n;
enum rew c;
/* LINTED */
for (n = man->last; n; n = n->parent) {
/*
* Whether we should stop immediately (REW_HALT), stop
* and rewind until this point (REW_REWIND), or keep
* rewinding (REW_NOHALT).
*/
c = rew_dohalt(tok, type, n);
if (REW_HALT == c)
return(1);
if (REW_REWIND == c)
break;
}
/*
* Rewind until the current point. Warn if we're a roff
* instruction that's mowing over explicit scopes.
*/
assert(n);
return(man_unscope(man, n, MANDOCERR_MAX));
}
/*
* 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 void
man_descope(struct roff_man *man, int line, int offs)
{
/*
* Co-ordinate what happens with having a next-line scope open:
* first close out the element scope (if applicable), then close
* out the block scope (also if applicable).
*/
if (man->flags & MAN_ELINE) {
man->flags &= ~MAN_ELINE;
man_unscope(man, man->last->parent);
}
if ( ! (man->flags & MAN_BLINE))
return;
man->flags &= ~MAN_BLINE;
man_unscope(man, man->last->parent);
roff_body_alloc(man, line, offs, man->last->tok);
}
static int
man_descope(struct man *man, int line, int offs)
{
/*
* Co-ordinate what happens with having a next-line scope open:
* first close out the element scope (if applicable), then close
* out the block scope (also if applicable).
*/
if (MAN_ELINE & man->flags) {
man->flags &= ~MAN_ELINE;
if ( ! man_unscope(man, man->last->parent, MANDOCERR_MAX))
return(0);
}
if ( ! (MAN_BLINE & man->flags))
return(1);
man->flags &= ~MAN_BLINE;
if ( ! man_unscope(man, man->last->parent, MANDOCERR_MAX))
return(0);
return(man_body_alloc(man, line, offs, man->last->tok));
}
/*
* Rewinding entails ascending the parse tree until a coherent point,
* for example, the `SH' macro will close out any intervening `SS'
* scopes. When a scope is closed, it must be validated and actioned.
*/
static void
rew_scope(struct roff_man *man, int tok)
{
struct roff_node *n;
/* Preserve empty paragraphs before RS. */
n = man->last;
if (tok == MAN_RS && n->child == NULL &&
(n->tok == MAN_P || n->tok == MAN_PP || n->tok == MAN_LP))
return;
for (;;) {
if (n->type == ROFFT_ROOT)
return;
if (n->flags & MAN_VALID) {
n = n->parent;
continue;
}
if (n->type != ROFFT_BLOCK) {
if (n->parent->type == ROFFT_ROOT) {
man_unscope(man, n);
return;
} else {
n = n->parent;
continue;
}
}
if (tok != MAN_SH && (n->tok == MAN_SH ||
(tok != MAN_SS && (n->tok == MAN_SS ||
man_macros[n->tok].fp == blk_exp))))
return;
man_unscope(man, n);
n = man->last;
}
}
/*
* Parse an implicit-block macro. These contain a ROFFT_HEAD and a
* ROFFT_BODY contained within a ROFFT_BLOCK. Rules for closing out other
* scopes, such as `SH' closing out an `SS', are defined in the rew
* routines.
*/
void
blk_imp(MACRO_PROT_ARGS)
{
int la;
char *p;
struct roff_node *n;
rew_scope(man, tok);
n = roff_block_alloc(man, line, ppos, tok);
if (n->tok == MAN_SH || n->tok == MAN_SS)
man->flags &= ~MAN_LITERAL;
n = roff_head_alloc(man, line, ppos, tok);
/* Add line arguments. */
for (;;) {
la = *pos;
if ( ! man_args(man, line, pos, buf, &p))
break;
roff_word_alloc(man, line, la, p);
}
/*
* For macros having optional next-line scope,
* keep the head open if there were no arguments.
* For `TP', always keep the head open.
*/
if (man_macros[tok].flags & MAN_SCOPED &&
(tok == MAN_TP || n == man->last)) {
man->flags |= MAN_BLINE;
return;
}
/* Close out the head and open the body. */
man_unscope(man, n);
roff_body_alloc(man, line, ppos, tok);
}
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);
}
/* ARGSUSED */
int
blk_exp(MACRO_PROT_ARGS)
{
struct man_node *n;
int la;
char *p;
/* Close out prior implicit scopes. */
if ( ! rew_scope(MAN_BLOCK, man, tok))
return(0);
if ( ! man_block_alloc(man, line, ppos, tok))
return(0);
if ( ! man_head_alloc(man, line, ppos, tok))
return(0);
for (;;) {
la = *pos;
if ( ! man_args(man, line, pos, buf, &p))
break;
if ( ! man_word_alloc(man, line, la, p))
return(0);
}
assert(man);
assert(tok != MAN_MAX);
for (n = man->last; n; n = n->parent) {
if (n->tok != tok)
continue;
assert(MAN_HEAD == n->type);
man_unscope(man, n, MANDOCERR_MAX);
break;
}
return(man_body_alloc(man, line, ppos, tok));
}
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
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;
}
}
static int
man_pmacro(struct roff_man *man, int ln, char *buf, int offs)
{
struct roff_node *n;
const char *cp;
size_t sz;
enum roff_tok tok;
int ppos;
int bline;
/* Determine the line macro. */
ppos = offs;
tok = TOKEN_NONE;
for (sz = 0; sz < 4 && strchr(" \t\\", buf[offs]) == NULL; sz++)
offs++;
if (sz > 0 && sz < 4)
tok = roffhash_find(man->manmac, buf + ppos, sz);
if (tok == TOKEN_NONE) {
mandoc_msg(MANDOCERR_MACRO, man->parse,
ln, ppos, buf + ppos - 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] == ' ')
offs++;
/*
* Trailing whitespace. Note that tabs are allowed to be passed
* into the parser as "text", so we only warn about spaces here.
*/
if (buf[offs] == '\0' && buf[offs - 1] == ' ')
mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
ln, offs - 1, NULL);
/*
* Some macros break next-line scopes; otherwise, remember
* whether we are in next-line scope for a block head.
*/
man_breakscope(man, tok);
bline = man->flags & MAN_BLINE;
/*
* If the line in next-line scope ends with \c, keep the
* next-line scope open for the subsequent input line.
* That is not at all portable, only groff >= 1.22.4
* does it, but *if* this weird idiom occurs in a manual
* page, that's very likely what the author intended.
*/
if (bline) {
cp = strchr(buf + offs, '\0') - 2;
if (cp >= buf && cp[0] == '\\' && cp[1] == 'c')
bline = 0;
}
/* Call to handler... */
assert(man_macros[tok].fp);
(*man_macros[tok].fp)(man, tok, ln, ppos, &offs, buf);
/* In quick mode (for mandocdb), abort after the NAME section. */
if (man->quick && tok == MAN_SH) {
n = man->last;
if (n->type == ROFFT_BODY &&
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->flags & MAN_BLINE);
man->flags &= ~MAN_BLINE;
man_unscope(man, man->last->parent);
roff_body_alloc(man, ln, ppos, man->last->tok);
return 1;
}
int
man_macroend(struct man *man)
{
return(man_unscope(man, man->first, MANDOCERR_SCOPEEXIT));
}
static int
man_pmacro(struct roff_man *man, int ln, char *buf, int offs)
{
struct roff_node *n;
const char *cp;
int tok;
int i, ppos;
int bline;
char mac[5];
ppos = 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 > 0 && i < 4) ? man_hash_find(mac) : TOKEN_NONE;
if (tok == TOKEN_NONE) {
mandoc_msg(MANDOCERR_MACRO, man->parse,
ln, ppos, buf + ppos - 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 (buf[offs] == '\0' && buf[offs - 1] == ' ')
mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
ln, offs - 1, NULL);
/*
* Some macros break next-line scopes; otherwise, remember
* whether we are in next-line scope for a block head.
*/
man_breakscope(man, tok);
bline = man->flags & MAN_BLINE;
/* Call to handler... */
assert(man_macros[tok].fp);
(*man_macros[tok].fp)(man, tok, ln, ppos, &offs, buf);
/* In quick mode (for mandocdb), abort after the NAME section. */
if (man->quick && tok == MAN_SH) {
n = man->last;
if (n->type == ROFFT_BODY &&
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->flags & MAN_BLINE);
man->flags &= ~MAN_BLINE;
man_unscope(man, man->last->parent);
roff_body_alloc(man, ln, ppos, man->last->tok);
return 1;
}
