1 /* ***************************************************************** 2 * 3 * Copyright 2016 Microsoft 4 * 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 * 18 ******************************************************************/ 19 20 #include "getopt.h" 21 #include <windows.h> 22 23 char* optarg = NULL; 24 int optind = 1; 25 getopt(int argc,char * const argv[],const char * optstring)26int getopt(int argc, char *const argv[], const char *optstring) 27 { 28 if ((optind >= argc) || (argv[optind][0] != '-') || (argv[optind][0] == 0)) 29 { 30 return -1; 31 } 32 33 int opt = argv[optind][1]; 34 const char *p = strchr(optstring, opt); 35 36 if (p == NULL) 37 { 38 return '?'; 39 } 40 if (p[1] == ':') 41 { 42 optind++; 43 if (optind >= argc) 44 { 45 return '?'; 46 } 47 optarg = argv[optind]; 48 optind++; 49 } 50 return opt; 51 } 52 53