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File: [cvsweb.bsd.lv] / mandoc / tree.c (download)

Revision 1.50, Tue Dec 24 19:11:46 2013 UTC (10 years, 3 months ago) by schwarze
Branch: MAIN
CVS Tags: VERSION_1_12_3
Changes since 1.49: +6 -2 lines

When deciding whether two consecutive macros are on the same input line,
we have to compare the line where the first one *ends* (not where it begins)
to the line where the second one starts.
This fixes the bug that .Bk allowed output line breaks right after block
macros spanning more than one input line, even when the next macro follows
on the same line.

/*	$Id: tree.c,v 1.50 2013/12/24 19:11:46 schwarze Exp $ */
/*
 * Copyright (c) 2008, 2009, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 * Copyright (c) 2013 Ingo Schwarze <schwarze@openbsd.org>
 *
 * 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.
 *
 * 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 <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#include "mandoc.h"
#include "mdoc.h"
#include "man.h"
#include "main.h"

static	void	print_box(const struct eqn_box *, int);
static	void	print_man(const struct man_node *, int);
static	void	print_mdoc(const struct mdoc_node *, int);
static	void	print_span(const struct tbl_span *, int);


/* ARGSUSED */
void
tree_mdoc(void *arg, const struct mdoc *mdoc)
{

	print_mdoc(mdoc_node(mdoc), 0);
}


/* ARGSUSED */
void
tree_man(void *arg, const struct man *man)
{

	print_man(man_node(man), 0);
}


static void
print_mdoc(const struct mdoc_node *n, int indent)
{
	const char	 *p, *t;
	int		  i, j;
	size_t		  argc;
	struct mdoc_argv *argv;

	argv = NULL;
	argc = 0;
	t = p = NULL;

	switch (n->type) {
	case (MDOC_ROOT):
		t = "root";
		break;
	case (MDOC_BLOCK):
		t = "block";
		break;
	case (MDOC_HEAD):
		t = "block-head";
		break;
	case (MDOC_BODY):
		if (n->end)
			t = "body-end";
		else
			t = "block-body";
		break;
	case (MDOC_TAIL):
		t = "block-tail";
		break;
	case (MDOC_ELEM):
		t = "elem";
		break;
	case (MDOC_TEXT):
		t = "text";
		break;
	case (MDOC_TBL):
		/* FALLTHROUGH */
	case (MDOC_EQN):
		break;
	default:
		abort();
		/* NOTREACHED */
	}

	switch (n->type) {
	case (MDOC_TEXT):
		p = n->string;
		break;
	case (MDOC_BODY):
		p = mdoc_macronames[n->tok];
		break;
	case (MDOC_HEAD):
		p = mdoc_macronames[n->tok];
		break;
	case (MDOC_TAIL):
		p = mdoc_macronames[n->tok];
		break;
	case (MDOC_ELEM):
		p = mdoc_macronames[n->tok];
		if (n->args) {
			argv = n->args->argv;
			argc = n->args->argc;
		}
		break;
	case (MDOC_BLOCK):
		p = mdoc_macronames[n->tok];
		if (n->args) {
			argv = n->args->argv;
			argc = n->args->argc;
		}
		break;
	case (MDOC_TBL):
		/* FALLTHROUGH */
	case (MDOC_EQN):
		break;
	case (MDOC_ROOT):
		p = "root";
		break;
	default:
		abort();
		/* NOTREACHED */
	}

	if (n->span) {
		assert(NULL == p && NULL == t);
		print_span(n->span, indent);
	} else if (n->eqn) {
		assert(NULL == p && NULL == t);
		print_box(n->eqn->root, indent);
	} else {
		for (i = 0; i < indent; i++)
			putchar('\t');

		printf("%s (%s)", p, t);

		for (i = 0; i < (int)argc; i++) {
			printf(" -%s", mdoc_argnames[argv[i].arg]);
			if (argv[i].sz > 0)
				printf(" [");
			for (j = 0; j < (int)argv[i].sz; j++)
				printf(" [%s]", argv[i].value[j]);
			if (argv[i].sz > 0)
				printf(" ]");
		}

		putchar(' ');
		if (MDOC_LINE & n->flags)
			putchar('*');
		printf("%d:%d", n->line, n->pos);
		if (n->lastline != n->line)
			printf("-%d", n->lastline);
		putchar('\n');
	}

	if (n->child)
		print_mdoc(n->child, indent + 1);
	if (n->next)
		print_mdoc(n->next, indent);
}


static void
print_man(const struct man_node *n, int indent)
{
	const char	 *p, *t;
	int		  i;

	t = p = NULL;

	switch (n->type) {
	case (MAN_ROOT):
		t = "root";
		break;
	case (MAN_ELEM):
		t = "elem";
		break;
	case (MAN_TEXT):
		t = "text";
		break;
	case (MAN_BLOCK):
		t = "block";
		break;
	case (MAN_HEAD):
		t = "block-head";
		break;
	case (MAN_BODY):
		t = "block-body";
		break;
	case (MAN_TAIL):
		t = "block-tail";
		break;
	case (MAN_TBL):
		/* FALLTHROUGH */
	case (MAN_EQN):
		break;
	default:
		abort();
		/* NOTREACHED */
	}

	switch (n->type) {
	case (MAN_TEXT):
		p = n->string;
		break;
	case (MAN_ELEM):
		/* FALLTHROUGH */
	case (MAN_BLOCK):
		/* FALLTHROUGH */
	case (MAN_HEAD):
		/* FALLTHROUGH */
	case (MAN_TAIL):
		/* FALLTHROUGH */
	case (MAN_BODY):
		p = man_macronames[n->tok];
		break;
	case (MAN_ROOT):
		p = "root";
		break;
	case (MAN_TBL):
		/* FALLTHROUGH */
	case (MAN_EQN):
		break;
	default:
		abort();
		/* NOTREACHED */
	}

	if (n->span) {
		assert(NULL == p && NULL == t);
		print_span(n->span, indent);
	} else if (n->eqn) {
		assert(NULL == p && NULL == t);
		print_box(n->eqn->root, indent);
	} else {
		for (i = 0; i < indent; i++)
			putchar('\t');
		printf("%s (%s) %d:%d\n", p, t, n->line, n->pos);
	}

	if (n->child)
		print_man(n->child, indent + 1);
	if (n->next)
		print_man(n->next, indent);
}

static void
print_box(const struct eqn_box *ep, int indent)
{
	int		 i;
	const char	*t;

	if (NULL == ep)
		return;
	for (i = 0; i < indent; i++)
		putchar('\t');

	t = NULL;
	switch (ep->type) {
	case (EQN_ROOT):
		t = "eqn-root";
		break;
	case (EQN_LIST):
		t = "eqn-list";
		break;
	case (EQN_SUBEXPR):
		t = "eqn-expr";
		break;
	case (EQN_TEXT):
		t = "eqn-text";
		break;
	case (EQN_MATRIX):
		t = "eqn-matrix";
		break;
	}

	assert(t);
	printf("%s(%d, %d, %d, %d, %d, \"%s\", \"%s\") %s\n", 
		t, EQN_DEFSIZE == ep->size ? 0 : ep->size,
		ep->pos, ep->font, ep->mark, ep->pile, 
		ep->left ? ep->left : "",
		ep->right ? ep->right : "",
		ep->text ? ep->text : "");

	print_box(ep->first, indent + 1);
	print_box(ep->next, indent);
}

static void
print_span(const struct tbl_span *sp, int indent)
{
	const struct tbl_dat *dp;
	int		 i;

	for (i = 0; i < indent; i++)
		putchar('\t');

	switch (sp->pos) {
	case (TBL_SPAN_HORIZ):
		putchar('-');
		return;
	case (TBL_SPAN_DHORIZ):
		putchar('=');
		return;
	default:
		break;
	}

	for (dp = sp->first; dp; dp = dp->next) {
		switch (dp->pos) {
		case (TBL_DATA_HORIZ):
			/* FALLTHROUGH */
		case (TBL_DATA_NHORIZ):
			putchar('-');
			continue;
		case (TBL_DATA_DHORIZ):
			/* FALLTHROUGH */
		case (TBL_DATA_NDHORIZ):
			putchar('=');
			continue;
		default:
			break;
		}
		printf("[\"%s\"", dp->string ? dp->string : "");
		if (dp->spans)
			printf("(%d)", dp->spans);
		if (NULL == dp->layout)
			putchar('*');
		putchar(']');
		putchar(' ');
	}

	printf("(tbl) %d:1\n", sp->line);
}