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Annotation of src/external/mpl/bind/dist/lib/dns/gen-unix.h, Revision 1.2

1.2     ! christos    1: /*     $NetBSD: gen-unix.h,v 1.1.1.6 2014/12/10 03:34:39 christos Exp $        */
1.1       christos    2:
                      3: /*
                      4:  * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
                      5:  *
                      6:  * This Source Code Form is subject to the terms of the Mozilla Public
                      7:  * License, v. 2.0. If a copy of the MPL was not distributed with this
                      8:  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
                      9:  *
                     10:  * See the COPYRIGHT file distributed with this work for additional
                     11:  * information regarding copyright ownership.
                     12:  */
                     13:
                     14:
                     15: /*! \file
                     16:  * \brief
                     17:  * This file is responsible for defining two operations that are not
                     18:  * directly portable between Unix-like systems and Windows NT, option
                     19:  * parsing and directory scanning.  It is here because it was decided
                     20:  * that the "gen" build utility was not to depend on libisc.a, so
                     21:  * the functions declared in isc/commandline.h and isc/dir.h could not
                     22:  * be used.
                     23:  *
                     24:  * The commandline stuff is really just a wrapper around getopt().
                     25:  * The dir stuff was shrunk to fit the needs of gen.c.
                     26:  */
                     27:
                     28: #ifndef DNS_GEN_UNIX_H
                     29: #define DNS_GEN_UNIX_H 1
                     30:
                     31: #include <sys/types.h>          /* Required on some systems for dirent.h. */
                     32:
                     33: #include <dirent.h>
                     34: #include <unistd.h>            /* XXXDCL Required for ?. */
                     35:
                     36: #include <isc/boolean.h>
                     37: #include <isc/lang.h>
                     38:
                     39: #ifdef NEED_OPTARG
                     40: extern char *optarg;
                     41: #endif
                     42:
                     43: #define isc_commandline_parse          getopt
                     44: #define isc_commandline_argument       optarg
                     45:
                     46: typedef struct {
                     47:        DIR *handle;
                     48:        char *filename;
                     49: } isc_dir_t;
                     50:
                     51: ISC_LANG_BEGINDECLS
                     52:
                     53: static isc_boolean_t
                     54: start_directory(const char *path, isc_dir_t *dir) {
                     55:        dir->handle = opendir(path);
                     56:
                     57:        if (dir->handle != NULL)
                     58:                return (ISC_TRUE);
                     59:        else
                     60:                return (ISC_FALSE);
                     61:
                     62: }
                     63:
                     64: static isc_boolean_t
                     65: next_file(isc_dir_t *dir) {
                     66:        struct dirent *dirent;
                     67:
                     68:        dir->filename = NULL;
                     69:
                     70:        if (dir->handle != NULL) {
                     71:                dirent = readdir(dir->handle);
                     72:                if (dirent != NULL)
                     73:                        dir->filename = dirent->d_name;
                     74:        }
                     75:
                     76:        if (dir->filename != NULL)
                     77:                return (ISC_TRUE);
                     78:        else
                     79:                return (ISC_FALSE);
                     80: }
                     81:
                     82: static void
                     83: end_directory(isc_dir_t *dir) {
                     84:        if (dir->handle != NULL)
                     85:                (void)closedir(dir->handle);
                     86:
                     87:        dir->handle = NULL;
                     88: }
                     89:
                     90: ISC_LANG_ENDDECLS
                     91:
                     92: #endif /* DNS_GEN_UNIX_H */