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 #include "_getopt.h"
  24
  25 #define EPR                 fprintf(stderr,
  26 #define ERR(str, chr)       if(opterr) { EPR "%s%c\n", str, chr); }
  27
  28 static int opterr = 1;
  29 int optind = 1;
  30 static int optopt;
  31 char *optarg;
  32
  33 int
  34     stgetopt(int argc, char *const argv[], const char *opts)
  35 {
  36     static int sp = 1;
  37     int c;
  38     char *cp;
  39
  40     if (sp == 1)
  41     {
  42         if (optind >= argc ||
  43             argv[optind][0] != '-' || argv[optind][1] == '\0')
  44             return -1;
  45         else if (strcmp(argv[optind], "--") == 0)
  46             {
  47                 optind++;
  48                 return -1;
  49             }
  50         else if (strcmp(argv[optind], "-isysroot") == 0)
  51             {
  52                 // skip macOS SDK selection flags
  53                 optind++; optind++;
  54             }
  55     }
  56     optopt = c = argv[optind][sp];
  57     if (c == ':' || (cp = strchr(opts, c)) == NULL)
  58     {
  59         ERR(": illegal option -- ", c);
  60         if (argv[optind][++sp] == '\0')
  61         {
  62             optind++;
  63             sp = 1;
  64         }
  65         return '?';
  66     }
  67     if (*++cp == ':')
  68     {
  69         if (argv[optind][sp + 1] != '\0')
  70             optarg = &argv[optind++][sp + 1];
  71         else
  72             if (++optind >= argc)
  73             {
  74                 ERR(": option requires an argument -- ", c);
  75                 sp = 1;
  76                 return '?';
  77             }
  78             else
  79                 optarg = argv[optind++];
  80         sp = 1;
  81     }
  82     else
  83     {
  84         if (argv[optind][++sp] == '\0')
  85         {
  86             sp = 1;
  87             optind++;
  88         }
  89         optarg = NULL;
  90     }
  91     return c;
  92 }
  93
  94 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */