libreoffice/soltools/cpp/_getopt.c

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <stdio.h>
#include <string.h>

#include <_getopt.h>

#define EPR                 fprintf(stderr,
#define ERR(str, chr)       if(opterr) { EPR "%s%c\n", str, chr); }

static int opterr = 1;
int optind = 1;
int optopt;
char *optarg;

int
    stgetopt(int argc, char *const argv[], const char *opts)
{
    static int sp = 1;
    int c;
    char *cp;

    if (sp == 1)
    {
        if (optind >= argc ||
            argv[optind][0] != '-' || argv[optind][1] == '\0')
            return -1;
        else if (strcmp(argv[optind], "--") == 0)
            {
                optind++;
                return -1;
            }
        else if (strcmp(argv[optind], "-isysroot") == 0)
            {
                // skip Mac OS X SDK selection flags
                optind++; optind++;
            }
    }
    optopt = c = argv[optind][sp];
    if (c == ':' || (cp = strchr(opts, c)) == NULL)
    {
        ERR(": illegal option -- ", c);
        if (argv[optind][++sp] == '\0')
        {
            optind++;
            sp = 1;
        }
        return '?';
    }
    if (*++cp == ':')
    {
        if (argv[optind][sp + 1] != '\0')
            optarg = &argv[optind++][sp + 1];
        else
            if (++optind >= argc)
            {
                ERR(": option requires an argument -- ", c);
                sp = 1;
                return '?';
            }
            else
                optarg = argv[optind++];
        sp = 1;
    }
    else
    {
        if (argv[optind][++sp] == '\0')
        {
            sp = 1;
            optind++;
        }
        optarg = NULL;
    }
    return c;
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */