soltools/cpp/_getopt.c

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <stdio.h>
  21 #include <string.h>
  22
  23 #define EPR                 fprintf(stderr,
  24 #define ERR(str, chr)       if(opterr) { EPR "%s%c\n", str, chr); }
  25
  26 int opterr = 1;
  27 int optind = 1;
  28 int optopt;
  29 char *optarg;
  30
  31 int
  32     stgetopt(int argc, char *const argv[], const char *opts)
  33 {
  34     static int sp = 1;
  35     register int c;
  36     register char *cp;
  37
  38     if (sp == 1)
  39     {
  40         if (optind >= argc ||
  41             argv[optind][0] != '-' || argv[optind][1] == '\0')
  42             return -1;
  43         else if (strcmp(argv[optind], "--") == 0)
  44             {
  45                 optind++;
  46                 return -1;
  47             }
  48         else if (strcmp(argv[optind], "-isysroot") == 0)
  49             {
  50                 // skip Mac OS X SDK selection flags
  51                 optind++; optind++;
  52             }
  53     }
  54     optopt = c = argv[optind][sp];
  55     if (c == ':' || (cp = strchr(opts, c)) == 0)
  56     {
  57         ERR(": illegal option -- ", c);
  58         if (argv[optind][++sp] == '\0')
  59         {
  60             optind++;
  61             sp = 1;
  62         }
  63         return '?';
  64     }
  65     if (*++cp == ':')
  66     {
  67         if (argv[optind][sp + 1] != '\0')
  68             optarg = &argv[optind++][sp + 1];
  69         else
  70             if (++optind >= argc)
  71             {
  72                 ERR(": option requires an argument -- ", c);
  73                 sp = 1;
  74                 return '?';
  75             }
  76             else
  77                 optarg = argv[optind++];
  78         sp = 1;
  79     }
  80     else
  81     {
  82         if (argv[optind][++sp] == '\0')
  83         {
  84             sp = 1;
  85             optind++;
  86         }
  87         optarg = 0;
  88     }
  89     return c;
  90 }
  91
  92 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */