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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
/*! \file
* \brief
* This file is responsible for defining two operations that are not
* directly portable between Unix-like systems and Windows NT, option
* parsing and directory scanning. It is here because it was decided
* that the "gen" build utility was not to depend on libisc.a, so
* the functions declared in isc/commandline.h and isc/dir.h could not
* be used.
*
* The commandline stuff is really just a wrapper around getopt().
* The dir stuff was shrunk to fit the needs of gen.c.
*/
#ifndef DNS_GEN_UNIX_H
#define DNS_GEN_UNIX_H 1
#include <dirent.h>
#include <errno.h>
#include <stdbool.h>
#include <stdlib.h>
#include <sys/types.h> /* Required on some systems for dirent.h. */
#include <unistd.h> /* XXXDCL Required for ?. */
#include <isc/lang.h>
#ifdef NEED_OPTARG
extern char *optarg;
#endif /* ifdef NEED_OPTARG */
#define isc_commandline_parse getopt
#define isc_commandline_argument optarg
typedef struct {
DIR *handle;
char *filename;
} isc_dir_t;
ISC_LANG_BEGINDECLS
static bool
start_directory(const char *path, isc_dir_t *dir) {
dir->handle = opendir(path);
if (dir->handle != NULL) {
return (true);
} else {
return (false);
}
}
static bool
next_file(isc_dir_t *dir) {
struct dirent *dirent;
dir->filename = NULL;
if (dir->handle != NULL) {
errno = 0;
dirent = readdir(dir->handle);
if (dirent != NULL) {
dir->filename = dirent->d_name;
} else {
if (errno != 0) {
exit(1);
}
}
}
if (dir->filename != NULL) {
return (true);
} else {
return (false);
}
}
static void
end_directory(isc_dir_t *dir) {
if (dir->handle != NULL) {
(void)closedir(dir->handle);
}
dir->handle = NULL;
}
ISC_LANG_ENDDECLS
#endif /* DNS_GEN_UNIX_H */
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