tesseract
3.03
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00001 /********************************************************************** 00002 * File: getopt.c 00003 * Description: Re-implementation of the unix code. 00004 * Author: Ray Smith 00005 * Created: Tue Nov 28 05:52:50 MST 1995 00006 * 00007 * (C) Copyright 1995, Hewlett-Packard Co. 00008 ** Licensed under the Apache License, Version 2.0 (the "License"); 00009 ** you may not use this file except in compliance with the License. 00010 ** You may obtain a copy of the License at 00011 ** http://www.apache.org/licenses/LICENSE-2.0 00012 ** Unless required by applicable law or agreed to in writing, software 00013 ** distributed under the License is distributed on an "AS IS" BASIS, 00014 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00015 ** See the License for the specific language governing permissions and 00016 ** limitations under the License. 00017 * 00018 **********************************************************************/ 00019 00020 #include <string.h> 00021 #include <stdio.h> 00022 #include "tessopt.h" 00023 00024 int tessoptind; 00025 char *tessoptarg; 00026 00027 /********************************************************************** 00028 * tessopt 00029 * 00030 * parse command line args. 00031 **********************************************************************/ 00032 00033 int tessopt ( //parse args 00034 inT32 argc, //arg count 00035 char *argv[], //args 00036 const char *arglist //string of arg chars 00037 ) { 00038 const char *arg; //arg char 00039 00040 if (tessoptind == 0) 00041 tessoptind = 1; 00042 if (tessoptind < argc && argv[tessoptind][0] == '-') { 00043 arg = strchr (arglist, argv[tessoptind][1]); 00044 if (arg == NULL || *arg == ':') 00045 return '?'; //dud option 00046 tessoptind++; 00047 tessoptarg = argv[tessoptind]; 00048 if (arg[1] == ':') { 00049 if (argv[tessoptind - 1][2] != '\0') 00050 //immediately after 00051 tessoptarg = argv[tessoptind - 1] + 2; 00052 else 00053 tessoptind++; 00054 } 00055 return *arg; 00056 } 00057 else 00058 return EOF; 00059 }