-/* $Id: man_macro.c,v 1.19 2009/08/13 11:45:29 kristaps Exp $ */
+/* $Id: man_macro.c,v 1.50 2010/07/31 23:52:58 schwarze Exp $ */
/*
- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
#include <assert.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
+#include "mandoc.h"
#include "libman.h"
-#define REW_REWIND (0) /* See rew_scope(). */
-#define REW_NOHALT (1) /* See rew_scope(). */
-#define REW_HALT (2) /* See rew_scope(). */
+enum rew {
+ REW_REWIND,
+ REW_NOHALT,
+ REW_HALT
+};
-static int in_line_eoln(MACRO_PROT_ARGS);
+static int blk_close(MACRO_PROT_ARGS);
+static int blk_exp(MACRO_PROT_ARGS);
static int blk_imp(MACRO_PROT_ARGS);
+static int in_line_eoln(MACRO_PROT_ARGS);
-static int rew_scope(enum man_type, struct man *, int);
-static int rew_dohalt(int, enum man_type,
+static int rew_scope(enum man_type,
+ struct man *, enum mant);
+static enum rew rew_dohalt(enum mant, enum man_type,
const struct man_node *);
+static enum rew rew_block(enum mant, enum man_type,
+ const struct man_node *);
+static int rew_warn(struct man *,
+ struct man_node *, enum mandocerr);
const struct man_macro __man_macros[MAN_MAX] = {
- { in_line_eoln, 0 }, /* br */
+ { in_line_eoln, MAN_NSCOPED }, /* br */
{ in_line_eoln, 0 }, /* TH */
- { blk_imp, 0 }, /* SH */
- { blk_imp, 0 }, /* SS */
- { blk_imp, MAN_SCOPED }, /* TP */
+ { blk_imp, MAN_SCOPED }, /* SH */
+ { blk_imp, MAN_SCOPED }, /* SS */
+ { blk_imp, MAN_SCOPED | MAN_FSCOPED }, /* TP */
{ blk_imp, 0 }, /* LP */
{ blk_imp, 0 }, /* PP */
{ blk_imp, 0 }, /* P */
{ in_line_eoln, MAN_SCOPED }, /* I */
{ in_line_eoln, 0 }, /* IR */
{ in_line_eoln, 0 }, /* RI */
- { in_line_eoln, 0 }, /* na */
+ { in_line_eoln, MAN_NSCOPED }, /* na */
{ in_line_eoln, 0 }, /* i */
- { in_line_eoln, 0 }, /* sp */
+ { in_line_eoln, MAN_NSCOPED }, /* sp */
{ in_line_eoln, 0 }, /* nf */
{ in_line_eoln, 0 }, /* fi */
{ in_line_eoln, 0 }, /* r */
+ { blk_close, 0 }, /* RE */
+ { blk_exp, MAN_EXPLICIT }, /* RS */
+ { in_line_eoln, 0 }, /* DT */
+ { in_line_eoln, 0 }, /* UC */
+ { in_line_eoln, 0 }, /* PD */
+ { in_line_eoln, MAN_NSCOPED }, /* Sp */
+ { in_line_eoln, 0 }, /* Vb */
+ { in_line_eoln, 0 }, /* Ve */
+ { in_line_eoln, 0 }, /* AT */
+ { in_line_eoln, 0 }, /* in */
};
const struct man_macro * const man_macros = __man_macros;
+/*
+ * Warn when "n" is an explicit non-roff macro.
+ */
+static int
+rew_warn(struct man *m, struct man_node *n, enum mandocerr er)
+{
+
+ if (er == MANDOCERR_MAX || MAN_BLOCK != n->type)
+ return(1);
+ if (MAN_VALID & n->flags)
+ return(1);
+ if ( ! (MAN_EXPLICIT & man_macros[n->tok].flags))
+ return(1);
+ return(man_nmsg(m, n, er));
+}
+
+
+/*
+ * Rewind scope. If a code "er" != MANDOCERR_MAX has been provided, it
+ * will be used if an explicit block scope is being closed out.
+ */
int
-man_unscope(struct man *m, const struct man_node *n)
+man_unscope(struct man *m, const struct man_node *n,
+ enum mandocerr er)
{
assert(n);
- m->next = MAN_NEXT_SIBLING;
/* LINTED */
while (m->last != n) {
+ if ( ! rew_warn(m, m->last, er))
+ return(0);
if ( ! man_valid_post(m))
return(0);
if ( ! man_action_post(m))
assert(m->last);
}
+ if ( ! rew_warn(m, m->last, er))
+ return(0);
if ( ! man_valid_post(m))
return(0);
- return(man_action_post(m));
+ if ( ! man_action_post(m))
+ return(0);
+
+ m->next = MAN_ROOT == m->last->type ?
+ MAN_NEXT_CHILD : MAN_NEXT_SIBLING;
+
+ return(1);
+}
+
+
+static enum rew
+rew_block(enum mant ntok, enum man_type type, const struct man_node *n)
+{
+
+ if (MAN_BLOCK == type && ntok == n->parent->tok &&
+ MAN_BODY == n->parent->type)
+ return(REW_REWIND);
+ return(ntok == n->tok ? REW_HALT : REW_NOHALT);
}
* section (all less sections), and scoped to subsections (all less
* sections and subsections).
*/
-static int
-rew_dohalt(int tok, enum man_type type, const struct man_node *n)
+static enum rew
+rew_dohalt(enum mant tok, enum man_type type, const struct man_node *n)
{
+ enum rew c;
+ /* We cannot progress beyond the root ever. */
if (MAN_ROOT == n->type)
return(REW_HALT);
+
assert(n->parent);
+
+ /* Normal nodes shouldn't go to the level of the root. */
if (MAN_ROOT == n->parent->type)
return(REW_REWIND);
+
+ /* Already-validated nodes should be closed out. */
if (MAN_VALID & n->flags)
return(REW_NOHALT);
+ /* First: rewind to ourselves. */
+ if (type == n->type && tok == n->tok)
+ return(REW_REWIND);
+
+ /*
+ * Next follow the implicit scope-smashings as defined by man.7:
+ * section, sub-section, etc.
+ */
+
switch (tok) {
case (MAN_SH):
- /* Break at root. */
- if (type == n->type && tok == n->tok)
- return(REW_REWIND);
break;
case (MAN_SS):
- /* Break at section. */
- if (type == n->type && tok == n->tok)
- return(REW_REWIND);
- if (MAN_BODY == n->type && MAN_SH == n->tok)
- return(REW_HALT);
+ /* Rewind to a section, if a block. */
+ if (REW_NOHALT != (c = rew_block(MAN_SH, type, n)))
+ return(c);
+ break;
+ case (MAN_RS):
+ /* Rewind to a subsection, if a block. */
+ if (REW_NOHALT != (c = rew_block(MAN_SS, type, n)))
+ return(c);
+ /* Rewind to a section, if a block. */
+ if (REW_NOHALT != (c = rew_block(MAN_SH, type, n)))
+ return(c);
break;
default:
- /* Break at subsection. */
- if (type == n->type && tok == n->tok)
- return(REW_REWIND);
- if (MAN_BODY == n->type && MAN_SS == n->tok)
- return(REW_HALT);
- if (MAN_BODY == n->type && MAN_SH == n->tok)
- return(REW_HALT);
+ /* Rewind to an offsetter, if a block. */
+ if (REW_NOHALT != (c = rew_block(MAN_RS, type, n)))
+ return(c);
+ /* Rewind to a subsection, if a block. */
+ if (REW_NOHALT != (c = rew_block(MAN_SS, type, n)))
+ return(c);
+ /* Rewind to a section, if a block. */
+ if (REW_NOHALT != (c = rew_block(MAN_SH, type, n)))
+ return(c);
break;
}
* scopes. When a scope is closed, it must be validated and actioned.
*/
static int
-rew_scope(enum man_type type, struct man *m, int tok)
+rew_scope(enum man_type type, struct man *m, enum mant tok)
{
struct man_node *n;
- int c;
+ enum rew c;
/* LINTED */
for (n = m->last; n; n = n->parent) {
break;
}
- /* Rewind until the current point. */
-
+ /*
+ * Rewind until the current point. Warn if we're a roff
+ * instruction that's mowing over explicit scopes.
+ */
assert(n);
- return(man_unscope(m, n));
+
+ return(man_unscope(m, n, MANDOCERR_MAX));
}
+/*
+ * Close out a generic explicit macro.
+ */
+/* ARGSUSED */
+int
+blk_close(MACRO_PROT_ARGS)
+{
+ enum mant ntok;
+ const struct man_node *nn;
+
+ switch (tok) {
+ case (MAN_RE):
+ ntok = MAN_RS;
+ break;
+ default:
+ abort();
+ /* NOTREACHED */
+ }
+
+ for (nn = m->last->parent; nn; nn = nn->parent)
+ if (ntok == nn->tok)
+ break;
+
+ if (NULL == nn)
+ if ( ! man_pmsg(m, line, ppos, MANDOCERR_NOSCOPE))
+ return(0);
+
+ if ( ! rew_scope(MAN_BODY, m, ntok))
+ return(0);
+ if ( ! rew_scope(MAN_BLOCK, m, ntok))
+ return(0);
+
+ return(1);
+}
+
+
+/* ARGSUSED */
+int
+blk_exp(MACRO_PROT_ARGS)
+{
+ int w, la;
+ char *p;
+
+ /*
+ * Close out prior scopes. "Regular" explicit macros cannot be
+ * nested, but we allow roff macros to be placed just about
+ * anywhere.
+ */
+
+ if ( ! rew_scope(MAN_BODY, m, tok))
+ return(0);
+ if ( ! rew_scope(MAN_BLOCK, m, tok))
+ return(0);
+
+ if ( ! man_block_alloc(m, line, ppos, tok))
+ return(0);
+ if ( ! man_head_alloc(m, line, ppos, tok))
+ return(0);
+
+ for (;;) {
+ la = *pos;
+ w = man_args(m, line, pos, buf, &p);
+
+ if (-1 == w)
+ return(0);
+ if (0 == w)
+ break;
+
+ if ( ! man_word_alloc(m, line, la, p))
+ return(0);
+ }
+
+ assert(m);
+ assert(tok != MAN_MAX);
+
+ if ( ! rew_scope(MAN_HEAD, m, tok))
+ return(0);
+ return(man_body_alloc(m, line, ppos, tok));
+}
+
+
+
/*
* Parse an implicit-block macro. These contain a MAN_HEAD and a
* MAN_BODY contained within a MAN_BLOCK. Rules for closing out other
* scopes, such as `SH' closing out an `SS', are defined in the rew
* routines.
*/
+/* ARGSUSED */
int
blk_imp(MACRO_PROT_ARGS)
{
int w, la;
char *p;
+ struct man_node *n;
/* Close out prior scopes. */
if ( ! man_head_alloc(m, line, ppos, tok))
return(0);
+ n = m->last;
+
/* Add line arguments. */
for (;;) {
if ( ! man_word_alloc(m, line, la, p))
return(0);
- m->next = MAN_NEXT_SIBLING;
}
/* Close out head and open body (unless MAN_SCOPE). */
if (MAN_SCOPED & man_macros[tok].flags) {
- m->flags |= MAN_BLINE;
- return(1);
- } else if ( ! rew_scope(MAN_HEAD, m, tok))
- return(0);
+ /* If we're forcing scope (`TP'), keep it open. */
+ if (MAN_FSCOPED & man_macros[tok].flags) {
+ m->flags |= MAN_BLINE;
+ return(1);
+ } else if (n == m->last) {
+ m->flags |= MAN_BLINE;
+ return(1);
+ }
+ }
+ if ( ! rew_scope(MAN_HEAD, m, tok))
+ return(0);
return(man_body_alloc(m, line, ppos, tok));
}
+/* ARGSUSED */
int
in_line_eoln(MACRO_PROT_ARGS)
{
return(0);
n = m->last;
- m->next = MAN_NEXT_CHILD;
for (;;) {
la = *pos;
return(0);
if (0 == w)
break;
-
if ( ! man_word_alloc(m, line, la, p))
return(0);
- m->next = MAN_NEXT_SIBLING;
}
- if (n == m->last && (MAN_SCOPED & man_macros[tok].flags)) {
+ /*
+ * 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 == m->last && MAN_SCOPED & man_macros[tok].flags) {
+ assert( ! (MAN_NSCOPED & man_macros[tok].flags));
m->flags |= MAN_ELINE;
return(1);
}
+ /* Set ignorable context, if applicable. */
+
+ if (MAN_NSCOPED & man_macros[tok].flags) {
+ assert( ! (MAN_SCOPED & man_macros[tok].flags));
+ m->flags |= MAN_ILINE;
+ }
+
/*
- * Note that when TH is pruned, we'll be back at the root, so
- * make sure that we don't clobber as its sibling.
+ * Rewind our element scope. Note that when TH is pruned, we'll
+ * be back at the root, so make sure that we don't clobber as
+ * its sibling.
*/
- /* FIXME: clean this to use man_unscope(). */
-
for ( ; m->last; m->last = m->last->parent) {
if (m->last == n)
break;
return(0);
if (m->last->type != MAN_ROOT && ! man_action_post(m))
return(0);
- if (m->last->type != MAN_ROOT)
- m->next = MAN_NEXT_SIBLING;
+
+ m->next = MAN_ROOT == m->last->type ?
+ MAN_NEXT_CHILD : MAN_NEXT_SIBLING;
return(1);
}
man_macroend(struct man *m)
{
- return(man_unscope(m, m->first));
+ return(man_unscope(m, m->first, MANDOCERR_SCOPEEXIT));
}
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