Tesseract  3.02
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tessopt.cpp
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1 /**********************************************************************
2  * File: getopt.c
3  * Description: Re-implementation of the unix code.
4  * Author: Ray Smith
5  * Created: Tue Nov 28 05:52:50 MST 1995
6  *
7  * (C) Copyright 1995, Hewlett-Packard Co.
8  ** Licensed under the Apache License, Version 2.0 (the "License");
9  ** you may not use this file except in compliance with the License.
10  ** You may obtain a copy of the License at
11  ** http://www.apache.org/licenses/LICENSE-2.0
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 "mfcpch.h" //precompiled headers
21 #include <string.h>
22 #include <stdio.h>
23 #include "tessopt.h"
24 #include "notdll.h" //must be last include
25 
27 char *tessoptarg;
28 
29 /**********************************************************************
30  * tessopt
31  *
32  * parse command line args.
33  **********************************************************************/
34 
35 int tessopt ( //parse args
36 inT32 argc, //arg count
37 char *argv[], //args
38 const char *arglist //string of arg chars
39 ) {
40  const char *arg; //arg char
41 
42  if (tessoptind == 0)
43  tessoptind = 1;
44  if (tessoptind < argc && argv[tessoptind][0] == '-') {
45  arg = strchr (arglist, argv[tessoptind][1]);
46  if (arg == NULL || *arg == ':')
47  return '?'; //dud option
48  tessoptind++;
49  tessoptarg = argv[tessoptind];
50  if (arg[1] == ':') {
51  if (argv[tessoptind - 1][2] != '\0')
52  //immediately after
53  tessoptarg = argv[tessoptind - 1] + 2;
54  else
55  tessoptind++;
56  }
57  return *arg;
58  }
59  else
60  return EOF;
61 }