1/*
2 * Copyright (C) 2004, 2005, 2007, 2009  Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1999-2001  Internet Software Consortium.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
16 */
17
18/* $Id: gen-unix.h,v 1.21 2009/01/17 23:47:42 tbox Exp $ */
19
20/*! \file
21 * \brief
22 * This file is responsible for defining two operations that are not
23 * directly portable between Unix-like systems and Windows NT, option
24 * parsing and directory scanning.  It is here because it was decided
25 * that the "gen" build utility was not to depend on libisc.a, so
26 * the functions declared in isc/commandline.h and isc/dir.h could not
27 * be used.
28 *
29 * The commandline stuff is really just a wrapper around getopt().
30 * The dir stuff was shrunk to fit the needs of gen.c.
31 */
32
33#ifndef DNS_GEN_UNIX_H
34#define DNS_GEN_UNIX_H 1
35
36#include <sys/types.h>          /* Required on some systems for dirent.h. */
37
38#include <dirent.h>
39#include <unistd.h>		/* XXXDCL Required for ?. */
40
41#include <isc/boolean.h>
42#include <isc/lang.h>
43
44#ifdef NEED_OPTARG
45extern char *optarg;
46#endif
47
48#define isc_commandline_parse		getopt
49#define isc_commandline_argument 	optarg
50
51typedef struct {
52	DIR *handle;
53	char *filename;
54} isc_dir_t;
55
56ISC_LANG_BEGINDECLS
57
58static isc_boolean_t
59start_directory(const char *path, isc_dir_t *dir) {
60	dir->handle = opendir(path);
61
62	if (dir->handle != NULL)
63		return (ISC_TRUE);
64	else
65		return (ISC_FALSE);
66
67}
68
69static isc_boolean_t
70next_file(isc_dir_t *dir) {
71	struct dirent *dirent;
72
73	dir->filename = NULL;
74
75	if (dir->handle != NULL) {
76		dirent = readdir(dir->handle);
77		if (dirent != NULL)
78			dir->filename = dirent->d_name;
79	}
80
81	if (dir->filename != NULL)
82		return (ISC_TRUE);
83	else
84		return (ISC_FALSE);
85}
86
87static void
88end_directory(isc_dir_t *dir) {
89	if (dir->handle != NULL)
90		(void)closedir(dir->handle);
91
92	dir->handle = NULL;
93}
94
95ISC_LANG_ENDDECLS
96
97#endif /* DNS_GEN_UNIX_H */
98