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+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * 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 http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*
+ * Copyright (c) 1987, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * \note This file was adapted from the NetBSD project's source tree, RCS ID:
+ * NetBSD: getopt.c,v 1.15 1999/09/20 04:39:37 lukem Exp
+ *
+ * The primary change has been to rename items to the ISC namespace
+ * and format in the ISC coding style.
+ *
+ * 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 pretty much a straight copy from the initial
+ * isc/commandline.c. The dir stuff was shrunk to fit the needs of gen.c.
+ */
+
+#ifndef DNS_GEN_WIN32_H
+#define DNS_GEN_WIN32_H 1
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+#include <windows.h>
+
+#include <isc/lang.h>
+
+int isc_commandline_index = 1; /* Index into parent argv vector. */
+int isc_commandline_option; /* Character checked for validity. */
+
+char *isc_commandline_argument; /* Argument associated with option. */
+char *isc_commandline_progname; /* For printing error messages. */
+
+bool isc_commandline_errprint = true; /* Print error messages. */
+bool isc_commandline_reset = true; /* Reset processing. */
+
+#define BADOPT '?'
+#define BADARG ':'
+#define ENDOPT ""
+
+ISC_LANG_BEGINDECLS
+
+/*
+ * getopt --
+ * Parse argc/argv argument vector.
+ */
+int
+isc_commandline_parse(int argc, char * const *argv, const char *options) {
+ static char *place = ENDOPT;
+ char *option; /* Index into *options of option. */
+
+ /*
+ * Update scanning pointer, either because a reset was requested or
+ * the previous argv was finished.
+ */
+ if (isc_commandline_reset || *place == '\0') {
+ isc_commandline_reset = false;
+
+ if (isc_commandline_progname == NULL)
+ isc_commandline_progname = argv[0];
+
+ if (isc_commandline_index >= argc ||
+ *(place = argv[isc_commandline_index]) != '-') {
+ /*
+ * Index out of range or points to non-option.
+ */
+ place = ENDOPT;
+ return (-1);
+ }
+
+ if (place[1] != '\0' && *++place == '-' && place[1] == '\0') {
+ /*
+ * Found '--' to signal end of options. Advance
+ * index to next argv, the first non-option.
+ */
+ isc_commandline_index++;
+ place = ENDOPT;
+ return (-1);
+ }
+ }
+
+ isc_commandline_option = *place++;
+ option = strchr(options, isc_commandline_option);
+
+ /*
+ * Ensure valid option has been passed as specified by options string.
+ * '-:' is never a valid command line option because it could not
+ * distinguish ':' from the argument specifier in the options string.
+ */
+ if (isc_commandline_option == ':' || option == NULL) {
+ if (*place == '\0')
+ isc_commandline_index++;
+
+ if (isc_commandline_errprint && *options != ':')
+ fprintf(stderr, "%s: illegal option -- %c\n",
+ isc_commandline_progname,
+ isc_commandline_option);
+
+ return (BADOPT);
+ }
+
+ if (*++option != ':') {
+ /*
+ * Option does not take an argument.
+ */
+ isc_commandline_argument = NULL;
+
+ /*
+ * Skip to next argv if at the end of the current argv.
+ */
+ if (*place == '\0')
+ ++isc_commandline_index;
+
+ } else {
+ /*
+ * Option needs an argument.
+ */
+ if (*place != '\0')
+ /*
+ * Option is in this argv, -D1 style.
+ */
+ isc_commandline_argument = place;
+
+ else if (argc > ++isc_commandline_index)
+ /*
+ * Option is next argv, -D 1 style.
+ */
+ isc_commandline_argument = argv[isc_commandline_index];
+
+ else {
+ /*
+ * Argument needed, but no more argv.
+ */
+ place = ENDOPT;
+
+ /*
+ * Silent failure with "missing argument" return
+ * when ':' starts options string, per historical spec.
+ */
+ if (*options == ':')
+ return (BADARG);
+
+ if (isc_commandline_errprint)
+ fprintf(stderr,
+ "%s: option requires an argument -- %c\n",
+ isc_commandline_progname,
+ isc_commandline_option);
+
+ return (BADOPT);
+ }
+
+ place = ENDOPT;
+
+ /*
+ * Point to argv that follows argument.
+ */
+ isc_commandline_index++;
+ }
+
+ return (isc_commandline_option);
+}
+
+typedef struct {
+ HANDLE handle;
+ WIN32_FIND_DATA find_data;
+ bool first_file;
+ char *filename;
+} isc_dir_t;
+
+bool
+start_directory(const char *path, isc_dir_t *dir) {
+ char pattern[_MAX_PATH], *p;
+
+ /*
+ * Need space for slash-splat and final NUL.
+ */
+ if (strlen(path) + 3 > sizeof(pattern))
+ return (false);
+
+ strcpy(pattern, path);
+
+ /*
+ * Append slash (if needed) and splat.
+ */
+ p = pattern + strlen(pattern);
+ if (p != pattern && p[-1] != '\\' && p[-1] != ':')
+ *p++ = '\\';
+ *p++ = '*';
+ *p++ = '\0';
+
+ dir->first_file = true;
+
+ dir->handle = FindFirstFile(pattern, &dir->find_data);
+
+ if (dir->handle == INVALID_HANDLE_VALUE) {
+ dir->filename = NULL;
+ return (false);
+ } else {
+ dir->filename = dir->find_data.cFileName;
+ return (true);
+ }
+}
+
+bool
+next_file(isc_dir_t *dir) {
+ if (dir->first_file)
+ dir->first_file = false;
+
+ else if (dir->handle != INVALID_HANDLE_VALUE) {
+ if (FindNextFile(dir->handle, &dir->find_data) == TRUE)
+ dir->filename = dir->find_data.cFileName;
+ else
+ dir->filename = NULL;
+
+ } else
+ dir->filename = NULL;
+
+ if (dir->filename != NULL)
+ return (true);
+ else
+ return (false);
+}
+
+void
+end_directory(isc_dir_t *dir) {
+ if (dir->handle != INVALID_HANDLE_VALUE)
+ FindClose(dir->handle);
+}
+
+ISC_LANG_ENDDECLS
+
+#endif /* DNS_GEN_WIN32_H */