1  //-------------------------------------------------------------------------
 2  /*
 3  Copyright (C) 2010-2019 EDuke32 developers and contributors
 4  Copyright (C) 2019 Nuke.YKT
 5  
 6  This file is part of NBlood.
 7  
 8  NBlood is free software; you can redistribute it and/or
 9  modify it under the terms of the GNU General Public License version 2
10  as published by the Free Software Foundation.
11  
12  This program is distributed in the hope that it will be useful,
13  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
15  
16  See the GNU General Public License for more details.
17  
18  You should have received a copy of the GNU General Public License
19  along with this program; if not, write to the Free Software
20  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
21  */
22  //-------------------------------------------------------------------------
23  #include <stdlib.h>
24  #include <string.h>
25  #include "compat.h"
26  #include "getopt.h"
27  
28  int margc;
29  char const * const *margv;
30  
31  const char *OptArgv[16];
32  int OptArgc;
33  const char *OptFull;
34  const char *SwitchChars = "-/";
35  
36  int GetOptions(SWITCH *switches)
37  {
38      static const char *pChar = NULL;
39      static int OptIndex = 1;
40      if (!pChar)
41      {
42          if (OptIndex >= margc)
43              return kOptEnd;
44          pChar = margv[OptIndex++];
45          if (!pChar)
46              return kOptEnd;
47      }
48      OptFull = pChar;
49      if (!strchr(SwitchChars, *pChar))
50      {
51          pChar = NULL;
52          return kOptFull;
53      }
54      pChar++;
55      int i;
56      int nID;
57      for (i = 0; true; i++)
58      {
59          if (!switches[i].name)
60              return kOptInvalid;
61          int nLength = strlen(switches[i].name);
62          if (!Bstrncasecmp(pChar, switches[i].name, nLength) && (pChar[nLength]=='=' || pChar[nLength]==0))
63          {
64              pChar += nLength;
65              if (*pChar=='=')
66              {
67                  pChar++;
68              }
69              else
70              {
71                  pChar = NULL;
72              }
73              break;
74          }
75      }
76      nID = switches[i].nID;
77      OptArgc = 0;
78      while (OptArgc < switches[i].nArgs)
79      {
80          if (!pChar)
81          {
82              if (OptIndex >= margc)
83                  break;
84              pChar = margv[OptIndex++];
85              if (strchr(SwitchChars, *pChar) != 0)
86                  break;
87          }
88          OptArgv[OptArgc++] = pChar;
89          pChar = NULL;
90      }
91      return nID;
92  }