-/* $Id: man_macro.c,v 1.13 2009/04/05 16:34:22 kristaps Exp $ */
+/* $Id: man_macro.c,v 1.64 2011/07/07 05:42:32 kristaps Exp $ */
/*
- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
+ * 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 copyright notice and this permission notice appear in all
- * copies.
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
*
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
- * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
- * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
#include <assert.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
+#include "man.h"
+#include "mandoc.h"
+#include "libmandoc.h"
#include "libman.h"
-#define FL_NLINE (1 << 0)
-#define FL_TLINE (1 << 1)
+enum rew {
+ REW_REWIND,
+ REW_NOHALT,
+ REW_HALT
+};
+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 man_args(struct man *, int,
int *, char *, char **);
-static int man_flags[MAN_MAX] = {
- 0, /* __ */
- 0, /* TH */
- 0, /* SH */
- 0, /* SS */
- FL_TLINE, /* TP */
- 0, /* LP */
- 0, /* PP */
- 0, /* P */
- 0, /* IP */
- 0, /* HP */
- FL_NLINE, /* SM */
- FL_NLINE, /* SB */
- FL_NLINE, /* BI */
- FL_NLINE, /* IB */
- FL_NLINE, /* BR */
- FL_NLINE, /* RB */
- FL_NLINE, /* R */
- FL_NLINE, /* B */
- FL_NLINE, /* I */
- FL_NLINE, /* IR */
- FL_NLINE, /* RI */
- 0, /* br */
- 0, /* na */
- FL_NLINE, /* i */
+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 void rew_warn(struct man *,
+ struct man_node *, enum mandocerr);
+
+const struct man_macro __man_macros[MAN_MAX] = {
+ { in_line_eoln, MAN_NSCOPED }, /* br */
+ { in_line_eoln, 0 }, /* TH */
+ { 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 */
+ { blk_imp, 0 }, /* IP */
+ { blk_imp, 0 }, /* HP */
+ { in_line_eoln, MAN_SCOPED }, /* SM */
+ { in_line_eoln, MAN_SCOPED }, /* SB */
+ { in_line_eoln, 0 }, /* BI */
+ { in_line_eoln, 0 }, /* IB */
+ { in_line_eoln, 0 }, /* BR */
+ { in_line_eoln, 0 }, /* RB */
+ { in_line_eoln, MAN_SCOPED }, /* R */
+ { in_line_eoln, MAN_SCOPED }, /* B */
+ { in_line_eoln, MAN_SCOPED }, /* I */
+ { in_line_eoln, 0 }, /* IR */
+ { in_line_eoln, 0 }, /* RI */
+ { in_line_eoln, MAN_NSCOPED }, /* na */
+ { in_line_eoln, MAN_NSCOPED }, /* sp */
+ { in_line_eoln, 0 }, /* nf */
+ { in_line_eoln, 0 }, /* fi */
+ { 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, 0 }, /* AT */
+ { in_line_eoln, 0 }, /* in */
+ { in_line_eoln, 0 }, /* ft */
};
+const struct man_macro * const man_macros = __man_macros;
+
+
+/*
+ * Warn when "n" is an explicit non-roff macro.
+ */
+static void
+rew_warn(struct man *m, struct man_node *n, enum mandocerr er)
+{
+
+ if (er == MANDOCERR_MAX || MAN_BLOCK != n->type)
+ return;
+ if (MAN_VALID & n->flags)
+ return;
+ if ( ! (MAN_EXPLICIT & man_macros[n->tok].flags))
+ return;
+
+ assert(er < MANDOCERR_FATAL);
+ 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_macro(struct man *man, int tok, int line,
- int ppos, int *pos, char *buf)
+man_unscope(struct man *m, const struct man_node *to,
+ enum mandocerr er)
{
- int w, la;
- char *p;
struct man_node *n;
- if ( ! man_elem_alloc(man, line, ppos, tok))
+ assert(to);
+
+ assert(MAN_ROOT != m->last->type);
+ m->next = MAN_NEXT_SIBLING;
+
+ /* LINTED */
+ while (m->last != to) {
+ /*
+ * Save the parent here, because we may delete the
+ * m->last node in the post-validation phase and reset
+ * it to m->last->parent, causing a step in the closing
+ * out to be lost.
+ */
+ n = m->last->parent;
+ rew_warn(m, m->last, er);
+ if ( ! man_valid_post(m))
+ return(0);
+ m->last = n;
+ assert(m->last);
+ }
+
+ rew_warn(m, m->last, er);
+ if ( ! man_valid_post(m))
return(0);
- n = man->last;
- man->next = MAN_NEXT_CHILD;
- for (;;) {
- la = *pos;
- w = man_args(man, line, pos, buf, &p);
+ return(1);
+}
- if (-1 == w)
- return(0);
- if (0 == w)
- break;
- if ( ! man_word_alloc(man, line, la, p))
- return(0);
- man->next = MAN_NEXT_SIBLING;
- }
+static enum rew
+rew_block(enum mant ntok, enum man_type type, const struct man_node *n)
+{
- if (n == man->last && (FL_NLINE & man_flags[tok])) {
- if (MAN_NLINE & man->flags)
- return(man_verr(man, line, ppos,
- "next-line scope already open"));
- man->flags |= MAN_NLINE;
- return(1);
+ if (MAN_BLOCK == type && ntok == n->parent->tok &&
+ MAN_BODY == n->parent->type)
+ return(REW_REWIND);
+ return(ntok == n->tok ? REW_HALT : REW_NOHALT);
+}
+
+
+/*
+ * There are three scope levels: scoped to the root (all), scoped to the
+ * section (all less sections), and scoped to subsections (all less
+ * sections and subsections).
+ */
+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;
+ case (MAN_SS):
+ /* 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:
+ /* 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;
}
- if (FL_TLINE & man_flags[tok]) {
- if (MAN_NLINE & man->flags)
- return(man_verr(man, line, ppos,
- "next-line scope already open"));
- man->flags |= MAN_NLINE;
- return(1);
+ return(REW_NOHALT);
+}
+
+
+/*
+ * 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 *m, enum mant tok)
+{
+ struct man_node *n;
+ enum rew c;
+
+ /* LINTED */
+ for (n = m->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;
}
- /*
- * 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 until the current point. Warn if we're a roff
+ * instruction that's mowing over explicit scopes.
*/
+ assert(n);
- for ( ; man->last; man->last = man->last->parent) {
- if (man->last == n)
- break;
- if (man->last->type == MAN_ROOT)
- break;
- if ( ! man_valid_post(man))
- return(0);
- if ( ! man_action_post(man))
- return(0);
+ 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 */
}
- assert(man->last);
+ for (nn = m->last->parent; nn; nn = nn->parent)
+ if (ntok == nn->tok)
+ break;
- /*
- * Same here regarding whether we're back at the root.
- */
+ if (NULL == nn)
+ man_pmsg(m, line, ppos, MANDOCERR_NOSCOPE);
- if (man->last->type != MAN_ROOT && ! man_valid_post(man))
+ if ( ! rew_scope(MAN_BODY, m, ntok))
return(0);
- if (man->last->type != MAN_ROOT && ! man_action_post(man))
+ if ( ! rew_scope(MAN_BLOCK, m, ntok))
return(0);
- if (man->last->type != MAN_ROOT)
- man->next = MAN_NEXT_SIBLING;
return(1);
}
+/* ARGSUSED */
int
-man_macroend(struct man *m)
+blk_exp(MACRO_PROT_ARGS)
{
+ int la;
+ char *p;
- for ( ; m->last && m->last != m->first;
- m->last = m->last->parent) {
- if ( ! man_valid_post(m))
- return(0);
- if ( ! man_action_post(m))
- return(0);
- }
- assert(m->last == m->first);
+ /*
+ * Close out prior scopes. "Regular" explicit macros cannot be
+ * nested, but we allow roff macros to be placed just about
+ * anywhere.
+ */
- if ( ! man_valid_post(m))
+ if ( ! man_block_alloc(m, line, ppos, tok))
return(0);
- if ( ! man_action_post(m))
+ if ( ! man_head_alloc(m, line, ppos, tok))
return(0);
- return(1);
+ for (;;) {
+ la = *pos;
+ if ( ! man_args(m, line, pos, buf, &p))
+ 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 */
-static int
-man_args(struct man *m, int line,
- int *pos, char *buf, char **v)
+int
+blk_imp(MACRO_PROT_ARGS)
{
+ int la;
+ char *p;
+ struct man_node *n;
+
+ /* Close out prior scopes. */
- if (0 == buf[*pos])
+ if ( ! rew_scope(MAN_BODY, m, tok))
+ return(0);
+ if ( ! rew_scope(MAN_BLOCK, m, tok))
return(0);
- /* First parse non-quoted strings. */
+ /* Allocate new block & head scope. */
+
+ if ( ! man_block_alloc(m, line, ppos, tok))
+ return(0);
+ if ( ! man_head_alloc(m, line, ppos, tok))
+ return(0);
- if ('\"' != buf[*pos]) {
- *v = &buf[*pos];
+ n = m->last;
- while (buf[*pos]) {
- if (' ' == buf[*pos])
- if ('\\' != buf[*pos - 1])
- break;
- (*pos)++;
- }
+ /* Add line arguments. */
- if (0 == buf[*pos])
- return(1);
+ for (;;) {
+ la = *pos;
+ if ( ! man_args(m, line, pos, buf, &p))
+ break;
+ if ( ! man_word_alloc(m, line, la, p))
+ return(0);
+ }
- buf[(*pos)++] = 0;
+ /* Close out head and open body (unless MAN_SCOPE). */
- if (0 == buf[*pos])
+ if (MAN_SCOPED & man_macros[tok].flags) {
+ /* 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);
+ }
+ }
- while (buf[*pos] && ' ' == buf[*pos])
- (*pos)++;
+ if ( ! rew_scope(MAN_HEAD, m, tok))
+ return(0);
+ return(man_body_alloc(m, line, ppos, tok));
+}
- if (buf[*pos])
- return(1);
- if ( ! man_vwarn(m, line, *pos, "trailing spaces"))
- return(-1);
+/* ARGSUSED */
+int
+in_line_eoln(MACRO_PROT_ARGS)
+{
+ int la;
+ char *p;
+ struct man_node *n;
- return(1);
+ if ( ! man_elem_alloc(m, line, ppos, tok))
+ return(0);
+
+ n = m->last;
+
+ for (;;) {
+ la = *pos;
+ if ( ! man_args(m, line, pos, buf, &p))
+ break;
+ if ( ! man_word_alloc(m, line, la, p))
+ return(0);
}
/*
- * If we're a quoted string (and quoted strings are allowed),
- * then parse ahead to the next quote. If none's found, it's an
- * error. After, parse to the next word.
+ * 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.
*/
- *v = &buf[++(*pos)];
+ if (n == m->last && MAN_SCOPED & man_macros[tok].flags) {
+ assert( ! (MAN_NSCOPED & man_macros[tok].flags));
+ m->flags |= MAN_ELINE;
+ return(1);
+ }
- while (buf[*pos] && '\"' != buf[*pos])
- (*pos)++;
+ /* Set ignorable context, if applicable. */
- if (0 == buf[*pos]) {
- if ( ! man_vwarn(m, line, *pos, "unterminated quote"))
- return(-1);
- return(1);
+ if (MAN_NSCOPED & man_macros[tok].flags) {
+ assert( ! (MAN_SCOPED & man_macros[tok].flags));
+ m->flags |= MAN_ILINE;
}
- buf[(*pos)++] = 0;
- if (0 == buf[*pos])
- return(1);
+ assert(MAN_ROOT != m->last->type);
+ m->next = MAN_NEXT_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.
+ */
+
+ for ( ; m->last; m->last = m->last->parent) {
+ if (m->last == n)
+ break;
+ if (m->last->type == MAN_ROOT)
+ break;
+ if ( ! man_valid_post(m))
+ return(0);
+ }
- while (buf[*pos] && ' ' == buf[*pos])
- (*pos)++;
+ assert(m->last);
- if (buf[*pos])
- return(1);
+ /*
+ * Same here regarding whether we're back at the root.
+ */
+
+ if (m->last->type != MAN_ROOT && ! man_valid_post(m))
+ return(0);
+
+ return(1);
+}
+
+
+int
+man_macroend(struct man *m)
+{
+
+ return(man_unscope(m, m->first, MANDOCERR_SCOPEEXIT));
+}
+
+static int
+man_args(struct man *m, int line, int *pos, char *buf, char **v)
+{
+ char *start;
+
+ assert(*pos);
+ *v = start = buf + *pos;
+ assert(' ' != *start);
+
+ if ('\0' == *start)
+ return(0);
- if ( ! man_vwarn(m, line, *pos, "trailing spaces"))
- return(-1);
+ *v = mandoc_getarg(m->parse, v, line, pos);
return(1);
}
git.ckatri.com / mandoc.git / blobdiff