2014-12-02 07:34:06 +00:00
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/* $Id: man_macro.c,v 1.91 2014/11/28 05:51:32 schwarze Exp $ */
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2012-10-18 09:55:16 +00:00
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/*
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* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
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2014-12-02 07:34:06 +00:00
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* Copyright (c) 2012, 2013, 2014 Ingo Schwarze <schwarze@openbsd.org>
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2014-01-31 19:59:03 +00:00
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* Copyright (c) 2013 Franco Fichtner <franco@lastsummer.de>
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2012-10-18 09:55:16 +00:00
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "config.h"
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2014-12-02 07:34:06 +00:00
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#include <sys/types.h>
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2012-10-18 09:55:16 +00:00
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#include <assert.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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#include "man.h"
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#include "mandoc.h"
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#include "libmandoc.h"
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#include "libman.h"
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enum rew {
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REW_REWIND,
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REW_NOHALT,
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REW_HALT
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};
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2014-12-02 07:34:06 +00:00
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static void blk_close(MACRO_PROT_ARGS);
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static void blk_exp(MACRO_PROT_ARGS);
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static void blk_imp(MACRO_PROT_ARGS);
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static void in_line_eoln(MACRO_PROT_ARGS);
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2014-11-22 18:08:25 +00:00
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static int man_args(struct man *, int,
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2012-10-18 09:55:16 +00:00
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int *, char *, char **);
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2014-12-02 07:34:06 +00:00
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static void rew_scope(enum man_type,
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2012-10-18 09:55:16 +00:00
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struct man *, enum mant);
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2014-11-22 18:08:25 +00:00
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static enum rew rew_dohalt(enum mant, enum man_type,
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2012-10-18 09:55:16 +00:00
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const struct man_node *);
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2014-11-22 18:08:25 +00:00
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static enum rew rew_block(enum mant, enum man_type,
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2012-10-18 09:55:16 +00:00
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const struct man_node *);
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const struct man_macro __man_macros[MAN_MAX] = {
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{ in_line_eoln, MAN_NSCOPED }, /* br */
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{ in_line_eoln, MAN_BSCOPE }, /* TH */
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{ blk_imp, MAN_BSCOPE | MAN_SCOPED }, /* SH */
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{ blk_imp, MAN_BSCOPE | MAN_SCOPED }, /* SS */
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{ blk_imp, MAN_BSCOPE | MAN_SCOPED | MAN_FSCOPED }, /* TP */
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{ blk_imp, MAN_BSCOPE }, /* LP */
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{ blk_imp, MAN_BSCOPE }, /* PP */
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{ blk_imp, MAN_BSCOPE }, /* P */
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{ blk_imp, MAN_BSCOPE }, /* IP */
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{ blk_imp, MAN_BSCOPE }, /* HP */
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2014-12-02 07:34:06 +00:00
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{ in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* SM */
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{ in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* SB */
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2012-10-18 09:55:16 +00:00
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{ in_line_eoln, 0 }, /* BI */
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{ in_line_eoln, 0 }, /* IB */
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{ in_line_eoln, 0 }, /* BR */
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{ in_line_eoln, 0 }, /* RB */
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2014-12-02 07:34:06 +00:00
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{ in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* R */
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{ in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* B */
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{ in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* I */
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2012-10-18 09:55:16 +00:00
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{ in_line_eoln, 0 }, /* IR */
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{ in_line_eoln, 0 }, /* RI */
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{ in_line_eoln, MAN_NSCOPED }, /* na */
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{ in_line_eoln, MAN_NSCOPED }, /* sp */
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{ in_line_eoln, MAN_BSCOPE }, /* nf */
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{ in_line_eoln, MAN_BSCOPE }, /* fi */
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{ blk_close, 0 }, /* RE */
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2014-01-31 19:59:03 +00:00
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{ blk_exp, MAN_BSCOPE | MAN_EXPLICIT }, /* RS */
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2012-10-18 09:55:16 +00:00
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{ in_line_eoln, 0 }, /* DT */
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{ in_line_eoln, 0 }, /* UC */
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{ in_line_eoln, 0 }, /* PD */
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{ in_line_eoln, 0 }, /* AT */
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{ in_line_eoln, 0 }, /* in */
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{ in_line_eoln, 0 }, /* ft */
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{ in_line_eoln, 0 }, /* OP */
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2014-01-31 19:59:03 +00:00
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{ in_line_eoln, MAN_BSCOPE }, /* EX */
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{ in_line_eoln, MAN_BSCOPE }, /* EE */
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{ blk_exp, MAN_BSCOPE | MAN_EXPLICIT }, /* UR */
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{ blk_close, 0 }, /* UE */
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2014-11-22 18:08:25 +00:00
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{ in_line_eoln, 0 }, /* ll */
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2012-10-18 09:55:16 +00:00
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};
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const struct man_macro * const man_macros = __man_macros;
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2014-12-02 07:34:06 +00:00
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void
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2014-11-22 18:08:25 +00:00
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man_unscope(struct man *man, const struct man_node *to)
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2012-10-18 09:55:16 +00:00
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{
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struct man_node *n;
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2014-11-22 18:08:25 +00:00
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to = to->parent;
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n = man->last;
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while (n != to) {
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/* Reached the end of the document? */
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if (to == NULL && ! (n->flags & MAN_VALID)) {
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if (man->flags & (MAN_BLINE | MAN_ELINE) &&
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man_macros[n->tok].flags & MAN_SCOPED) {
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mandoc_vmsg(MANDOCERR_BLK_LINE,
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man->parse, n->line, n->pos,
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"EOF breaks %s",
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man_macronames[n->tok]);
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if (man->flags & MAN_ELINE)
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man->flags &= ~MAN_ELINE;
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else {
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assert(n->type == MAN_HEAD);
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n = n->parent;
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man->flags &= ~MAN_BLINE;
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}
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man->last = n;
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n = n->parent;
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man_node_delete(man, man->last);
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continue;
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}
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if (n->type == MAN_BLOCK &&
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man_macros[n->tok].flags & MAN_EXPLICIT)
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mandoc_msg(MANDOCERR_BLK_NOEND,
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man->parse, n->line, n->pos,
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man_macronames[n->tok]);
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}
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2012-10-18 09:55:16 +00:00
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/*
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2014-11-22 18:08:25 +00:00
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* We might delete the man->last node
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* in the post-validation phase.
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* Save a pointer to the parent such that
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* we know where to continue the iteration.
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2012-10-18 09:55:16 +00:00
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*/
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2014-12-02 07:34:06 +00:00
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2014-11-22 18:08:25 +00:00
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man->last = n;
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n = n->parent;
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2014-12-02 07:34:06 +00:00
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man_valid_post(man);
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2012-10-18 09:55:16 +00:00
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}
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2014-12-02 07:34:06 +00:00
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/*
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* If we ended up at the parent of the node we were
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* supposed to rewind to, that means the target node
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* got deleted, so add the next node we parse as a child
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* of the parent instead of as a sibling of the target.
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*/
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man->next = (man->last == to) ?
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MAN_NEXT_CHILD : MAN_NEXT_SIBLING;
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2012-10-18 09:55:16 +00:00
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}
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static enum rew
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rew_block(enum mant ntok, enum man_type type, const struct man_node *n)
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{
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2014-12-02 07:34:06 +00:00
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if (type == MAN_BLOCK && ntok == n->parent->tok &&
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n->parent->type == MAN_BODY)
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2012-10-18 09:55:16 +00:00
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return(REW_REWIND);
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return(ntok == n->tok ? REW_HALT : REW_NOHALT);
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}
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/*
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* There are three scope levels: scoped to the root (all), scoped to the
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* section (all less sections), and scoped to subsections (all less
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* sections and subsections).
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*/
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2014-11-22 18:08:25 +00:00
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static enum rew
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2012-10-18 09:55:16 +00:00
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rew_dohalt(enum mant tok, enum man_type type, const struct man_node *n)
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{
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enum rew c;
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/* We cannot progress beyond the root ever. */
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if (MAN_ROOT == n->type)
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return(REW_HALT);
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assert(n->parent);
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/* Normal nodes shouldn't go to the level of the root. */
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if (MAN_ROOT == n->parent->type)
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return(REW_REWIND);
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/* Already-validated nodes should be closed out. */
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if (MAN_VALID & n->flags)
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return(REW_NOHALT);
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/* First: rewind to ourselves. */
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2014-01-31 19:59:03 +00:00
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if (type == n->type && tok == n->tok) {
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if (MAN_EXPLICIT & man_macros[n->tok].flags)
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return(REW_HALT);
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else
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return(REW_REWIND);
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}
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2012-10-18 09:55:16 +00:00
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2014-11-22 18:08:25 +00:00
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/*
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2012-10-18 09:55:16 +00:00
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* Next follow the implicit scope-smashings as defined by man.7:
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* section, sub-section, etc.
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*/
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switch (tok) {
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2014-11-22 18:08:25 +00:00
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case MAN_SH:
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2012-10-18 09:55:16 +00:00
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break;
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2014-11-22 18:08:25 +00:00
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case MAN_SS:
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2012-10-18 09:55:16 +00:00
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/* Rewind to a section, if a block. */
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if (REW_NOHALT != (c = rew_block(MAN_SH, type, n)))
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return(c);
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break;
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2014-11-22 18:08:25 +00:00
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case MAN_RS:
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2014-01-31 19:59:03 +00:00
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/* Preserve empty paragraphs before RS. */
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if (0 == n->nchild && (MAN_P == n->tok ||
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MAN_PP == n->tok || MAN_LP == n->tok))
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return(REW_HALT);
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2012-10-18 09:55:16 +00:00
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/* Rewind to a subsection, if a block. */
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if (REW_NOHALT != (c = rew_block(MAN_SS, type, n)))
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return(c);
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/* Rewind to a section, if a block. */
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if (REW_NOHALT != (c = rew_block(MAN_SH, type, n)))
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return(c);
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break;
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default:
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/* Rewind to an offsetter, if a block. */
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if (REW_NOHALT != (c = rew_block(MAN_RS, type, n)))
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return(c);
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/* Rewind to a subsection, if a block. */
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if (REW_NOHALT != (c = rew_block(MAN_SS, type, n)))
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return(c);
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/* Rewind to a section, if a block. */
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if (REW_NOHALT != (c = rew_block(MAN_SH, type, n)))
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return(c);
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break;
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}
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return(REW_NOHALT);
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}
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/*
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* Rewinding entails ascending the parse tree until a coherent point,
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* for example, the `SH' macro will close out any intervening `SS'
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* scopes. When a scope is closed, it must be validated and actioned.
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*/
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2014-12-02 07:34:06 +00:00
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static void
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2014-01-31 19:59:03 +00:00
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rew_scope(enum man_type type, struct man *man, enum mant tok)
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2012-10-18 09:55:16 +00:00
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{
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struct man_node *n;
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enum rew c;
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2014-01-31 19:59:03 +00:00
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for (n = man->last; n; n = n->parent) {
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2014-11-22 18:08:25 +00:00
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/*
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2012-10-18 09:55:16 +00:00
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* Whether we should stop immediately (REW_HALT), stop
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* and rewind until this point (REW_REWIND), or keep
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* rewinding (REW_NOHALT).
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*/
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c = rew_dohalt(tok, type, n);
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if (REW_HALT == c)
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2014-12-02 07:34:06 +00:00
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return;
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2012-10-18 09:55:16 +00:00
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if (REW_REWIND == c)
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break;
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}
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2014-11-22 18:08:25 +00:00
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/*
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2012-10-18 09:55:16 +00:00
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* Rewind until the current point. Warn if we're a roff
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* instruction that's mowing over explicit scopes.
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*/
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2014-12-02 07:34:06 +00:00
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man_unscope(man, n);
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2012-10-18 09:55:16 +00:00
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}
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/*
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* Close out a generic explicit macro.
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*/
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2014-12-02 07:34:06 +00:00
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void
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2012-10-18 09:55:16 +00:00
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blk_close(MACRO_PROT_ARGS)
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{
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2014-11-22 18:08:25 +00:00
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enum mant ntok;
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2012-10-18 09:55:16 +00:00
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const struct man_node *nn;
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switch (tok) {
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2014-11-22 18:08:25 +00:00
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case MAN_RE:
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2012-10-18 09:55:16 +00:00
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ntok = MAN_RS;
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break;
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2014-11-22 18:08:25 +00:00
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case MAN_UE:
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2014-01-31 19:59:03 +00:00
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ntok = MAN_UR;
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break;
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2012-10-18 09:55:16 +00:00
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default:
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abort();
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/* NOTREACHED */
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}
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2014-01-31 19:59:03 +00:00
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for (nn = man->last->parent; nn; nn = nn->parent)
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2014-12-02 07:34:06 +00:00
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if (nn->tok == ntok && nn->type == MAN_BLOCK)
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2012-10-18 09:55:16 +00:00
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break;
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2014-12-02 07:34:06 +00:00
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if (nn == NULL) {
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2014-11-22 18:08:25 +00:00
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mandoc_msg(MANDOCERR_BLK_NOTOPEN, man->parse,
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line, ppos, man_macronames[tok]);
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2014-12-02 07:34:06 +00:00
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rew_scope(MAN_BLOCK, man, MAN_PP);
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2014-11-22 18:08:25 +00:00
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} else
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man_unscope(man, nn);
|
2012-10-18 09:55:16 +00:00
|
|
|
}
|
|
|
|
|
2014-12-02 07:34:06 +00:00
|
|
|
void
|
2012-10-18 09:55:16 +00:00
|
|
|
blk_exp(MACRO_PROT_ARGS)
|
|
|
|
{
|
2014-01-31 19:59:03 +00:00
|
|
|
struct man_node *n;
|
2012-10-18 09:55:16 +00:00
|
|
|
int la;
|
|
|
|
char *p;
|
|
|
|
|
2014-12-02 07:34:06 +00:00
|
|
|
rew_scope(MAN_BLOCK, man, tok);
|
|
|
|
man_block_alloc(man, line, ppos, tok);
|
|
|
|
man_head_alloc(man, line, ppos, tok);
|
2012-10-18 09:55:16 +00:00
|
|
|
|
|
|
|
for (;;) {
|
|
|
|
la = *pos;
|
2014-01-31 19:59:03 +00:00
|
|
|
if ( ! man_args(man, line, pos, buf, &p))
|
2012-10-18 09:55:16 +00:00
|
|
|
break;
|
2014-12-02 07:34:06 +00:00
|
|
|
man_word_alloc(man, line, la, p);
|
2012-10-18 09:55:16 +00:00
|
|
|
}
|
|
|
|
|
2014-01-31 19:59:03 +00:00
|
|
|
assert(man);
|
2012-10-18 09:55:16 +00:00
|
|
|
assert(tok != MAN_MAX);
|
|
|
|
|
2014-12-02 07:34:06 +00:00
|
|
|
for (n = man->last; n; n = n->parent)
|
|
|
|
if (n->tok == tok) {
|
|
|
|
assert(n->type == MAN_HEAD);
|
|
|
|
man_unscope(man, n);
|
|
|
|
break;
|
|
|
|
}
|
2014-01-31 19:59:03 +00:00
|
|
|
|
2014-12-02 07:34:06 +00:00
|
|
|
man_body_alloc(man, line, ppos, tok);
|
2012-10-18 09:55:16 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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.
|
|
|
|
*/
|
2014-12-02 07:34:06 +00:00
|
|
|
void
|
2012-10-18 09:55:16 +00:00
|
|
|
blk_imp(MACRO_PROT_ARGS)
|
|
|
|
{
|
|
|
|
int la;
|
|
|
|
char *p;
|
|
|
|
struct man_node *n;
|
|
|
|
|
2014-12-02 07:34:06 +00:00
|
|
|
rew_scope(MAN_BODY, man, tok);
|
|
|
|
rew_scope(MAN_BLOCK, man, tok);
|
|
|
|
man_block_alloc(man, line, ppos, tok);
|
|
|
|
man_head_alloc(man, line, ppos, tok);
|
2014-01-31 19:59:03 +00:00
|
|
|
n = man->last;
|
2012-10-18 09:55:16 +00:00
|
|
|
|
|
|
|
/* Add line arguments. */
|
|
|
|
|
|
|
|
for (;;) {
|
|
|
|
la = *pos;
|
2014-01-31 19:59:03 +00:00
|
|
|
if ( ! man_args(man, line, pos, buf, &p))
|
2012-10-18 09:55:16 +00:00
|
|
|
break;
|
2014-12-02 07:34:06 +00:00
|
|
|
man_word_alloc(man, line, la, p);
|
2012-10-18 09:55:16 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Close out head and open body (unless MAN_SCOPE). */
|
|
|
|
|
2014-12-02 07:34:06 +00:00
|
|
|
if (man_macros[tok].flags & MAN_SCOPED) {
|
2012-10-18 09:55:16 +00:00
|
|
|
/* If we're forcing scope (`TP'), keep it open. */
|
2014-12-02 07:34:06 +00:00
|
|
|
if (man_macros[tok].flags & MAN_FSCOPED) {
|
2014-01-31 19:59:03 +00:00
|
|
|
man->flags |= MAN_BLINE;
|
2014-12-02 07:34:06 +00:00
|
|
|
return;
|
2014-01-31 19:59:03 +00:00
|
|
|
} else if (n == man->last) {
|
|
|
|
man->flags |= MAN_BLINE;
|
2014-12-02 07:34:06 +00:00
|
|
|
return;
|
2012-10-18 09:55:16 +00:00
|
|
|
}
|
|
|
|
}
|
2014-12-02 07:34:06 +00:00
|
|
|
rew_scope(MAN_HEAD, man, tok);
|
|
|
|
man_body_alloc(man, line, ppos, tok);
|
2012-10-18 09:55:16 +00:00
|
|
|
}
|
|
|
|
|
2014-12-02 07:34:06 +00:00
|
|
|
void
|
2012-10-18 09:55:16 +00:00
|
|
|
in_line_eoln(MACRO_PROT_ARGS)
|
|
|
|
{
|
|
|
|
int la;
|
|
|
|
char *p;
|
|
|
|
struct man_node *n;
|
|
|
|
|
2014-12-02 07:34:06 +00:00
|
|
|
man_elem_alloc(man, line, ppos, tok);
|
2014-01-31 19:59:03 +00:00
|
|
|
n = man->last;
|
2012-10-18 09:55:16 +00:00
|
|
|
|
|
|
|
for (;;) {
|
|
|
|
la = *pos;
|
2014-01-31 19:59:03 +00:00
|
|
|
if ( ! man_args(man, line, pos, buf, &p))
|
2012-10-18 09:55:16 +00:00
|
|
|
break;
|
2014-12-02 07:34:06 +00:00
|
|
|
if (man_macros[tok].flags & MAN_JOIN &&
|
|
|
|
man->last->type == MAN_TEXT)
|
|
|
|
man_word_append(man, p);
|
|
|
|
else
|
|
|
|
man_word_alloc(man, line, la, p);
|
2012-10-18 09:55:16 +00:00
|
|
|
}
|
|
|
|
|
2014-01-31 19:59:03 +00:00
|
|
|
/*
|
|
|
|
* Append MAN_EOS in case the last snipped argument
|
|
|
|
* ends with a dot, e.g. `.IR syslog (3).'
|
|
|
|
*/
|
|
|
|
|
|
|
|
if (n != man->last &&
|
2014-11-22 18:08:25 +00:00
|
|
|
mandoc_eos(man->last->string, strlen(man->last->string)))
|
2014-01-31 19:59:03 +00:00
|
|
|
man->last->flags |= MAN_EOS;
|
|
|
|
|
2012-10-18 09:55:16 +00:00
|
|
|
/*
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
|
2014-12-02 07:34:06 +00:00
|
|
|
if (n == man->last && man_macros[tok].flags & MAN_SCOPED) {
|
|
|
|
assert( ! (man_macros[tok].flags & MAN_NSCOPED));
|
2014-01-31 19:59:03 +00:00
|
|
|
man->flags |= MAN_ELINE;
|
2014-12-02 07:34:06 +00:00
|
|
|
return;
|
2012-10-18 09:55:16 +00:00
|
|
|
}
|
|
|
|
|
2014-12-02 07:34:06 +00:00
|
|
|
assert(man->last->type != MAN_ROOT);
|
2014-01-31 19:59:03 +00:00
|
|
|
man->next = MAN_NEXT_SIBLING;
|
2014-11-22 18:08:25 +00:00
|
|
|
|
2012-10-18 09:55:16 +00:00
|
|
|
/*
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
|
2014-01-31 19:59:03 +00:00
|
|
|
for ( ; man->last; man->last = man->last->parent) {
|
|
|
|
if (man->last == n)
|
2012-10-18 09:55:16 +00:00
|
|
|
break;
|
2014-01-31 19:59:03 +00:00
|
|
|
if (man->last->type == MAN_ROOT)
|
2012-10-18 09:55:16 +00:00
|
|
|
break;
|
2014-12-02 07:34:06 +00:00
|
|
|
man_valid_post(man);
|
2012-10-18 09:55:16 +00:00
|
|
|
}
|
|
|
|
|
2014-01-31 19:59:03 +00:00
|
|
|
assert(man->last);
|
2012-10-18 09:55:16 +00:00
|
|
|
|
|
|
|
/*
|
2014-11-22 18:08:25 +00:00
|
|
|
* Same here regarding whether we're back at the root.
|
2012-10-18 09:55:16 +00:00
|
|
|
*/
|
|
|
|
|
2014-12-02 07:34:06 +00:00
|
|
|
if (man->last->type != MAN_ROOT)
|
|
|
|
man_valid_post(man);
|
2012-10-18 09:55:16 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2014-12-02 07:34:06 +00:00
|
|
|
void
|
2014-01-31 19:59:03 +00:00
|
|
|
man_macroend(struct man *man)
|
2012-10-18 09:55:16 +00:00
|
|
|
{
|
|
|
|
|
2014-12-02 07:34:06 +00:00
|
|
|
man_unscope(man, man->first);
|
2012-10-18 09:55:16 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2014-01-31 19:59:03 +00:00
|
|
|
man_args(struct man *man, int line, int *pos, char *buf, char **v)
|
2012-10-18 09:55:16 +00:00
|
|
|
{
|
|
|
|
char *start;
|
|
|
|
|
|
|
|
assert(*pos);
|
|
|
|
*v = start = buf + *pos;
|
|
|
|
assert(' ' != *start);
|
|
|
|
|
|
|
|
if ('\0' == *start)
|
|
|
|
return(0);
|
|
|
|
|
2014-01-31 19:59:03 +00:00
|
|
|
*v = mandoc_getarg(man->parse, v, line, pos);
|
2012-10-18 09:55:16 +00:00
|
|
|
return(1);
|
|
|
|
}
|