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File: [cvsweb.bsd.lv] / docbook2mdoc / main.c (download)

Revision 1.6, Fri Apr 12 19:14:50 2019 UTC (14 months, 4 weeks ago) by schwarze
Branch: MAIN
CVS Tags: VERSION_1_0_1, VERSION_1_0_0
Changes since 1.5: +30 -5 lines

Implement lint and tree dump output modes.
Thanks to the previously committed node property infrastructure
in node.c, this needs only 110 lines of code (including the license
and the documentation).

/* $Id: main.c,v 1.6 2019/04/12 19:14:50 schwarze Exp $ */
/*
 * Copyright (c) 2014 Kristaps Dzonsons <kristaps@bsd.lv>
 * Copyright (c) 2019 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 AUTHORS DISCLAIM ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS 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.
 */
#include <getopt.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#include "node.h"
#include "parse.h"
#include "format.h"

/*
 * The steering function of the docbook2mdoc(1) program.
 */

enum	outt {
	OUTT_MDOC = 0,
	OUTT_TREE,
	OUTT_LINT
};

int
main(int argc, char *argv[])
{
	struct parse	*parser;
	struct ptree	*tree;
	const char	*progname;
	const char	*fname;
	int		 ch, fd, rc, warn;
	enum outt	 outtype;

	if ((progname = strrchr(argv[0], '/')) == NULL)
		progname = argv[0];
	else
		progname++;

	warn = 0;
	outtype = OUTT_MDOC;
	while ((ch = getopt(argc, argv, "T:W")) != -1) {
		switch (ch) {
		case 'T':
			if (strcmp(optarg, "mdoc") == 0)
				outtype = OUTT_MDOC;
			else if (strcmp(optarg, "tree") == 0)
				outtype = OUTT_TREE;
			else if (strcmp(optarg, "lint") == 0)
				outtype = OUTT_LINT;
			else {
				fprintf(stderr, "%s: Bad argument\n",
				    optarg);
				goto usage;
			}
			break;
		case 'W':
			warn = 1;
			break;
		default:
			goto usage;
		}
	}
	argc -= optind;
	argv += optind;

	/*
	 * Argument processing:
	 * Open file or use standard input.
	 */

	if (argc > 1) {
		fprintf(stderr, "%s: Too many arguments\n", argv[1]);
		goto usage;
	} else if (argc == 1) {
		fname = argv[0];
		fd = -1;
	} else {
		fname = "<stdin>";
		fd = STDIN_FILENO;
	}

	/* Parse. */

	if ((parser = parse_alloc(warn)) == NULL) {
		perror(NULL);
		return 6;
	}
	tree = parse_file(parser, fd, fname);
	rc = tree->flags & TREE_ERROR ? 3 : tree->flags & TREE_WARN ? 2 : 0;

	/* Format. */

	if (outtype != OUTT_LINT && tree->root != NULL) {
		if (rc > 2)
			fputc('\n', stderr);
		if (outtype == OUTT_MDOC)
			ptree_print_mdoc(tree);
		else
			ptree_print_tree(tree);
		if (rc > 2)
			fputs("\nThe output may be incomplete, see the "
			    "parse error reported above.\n\n", stderr);
	}
	parse_free(parser);
	return rc;

usage:
	fprintf(stderr, "usage: %s [-W] [-T mdoc | tree | lint] "
	    "[input_filename]\n", progname);
	return 5;
}