tesseract  3.03
/usr/local/google/home/jbreiden/tesseract-ocr-read-only/training/tessopt.cpp
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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 }
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