raze/source/blood/src/getopt.cpp
2019-09-22 08:39:22 +02:00

99 lines
2.4 KiB
C++

//-------------------------------------------------------------------------
/*
Copyright (C) 2010-2019 EDuke32 developers and contributors
Copyright (C) 2019 Nuke.YKT
This file is part of NBlood.
NBlood is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
//-------------------------------------------------------------------------
#include "ns.h" // Must come before everything else!
#include <stdlib.h>
#include <string.h>
#include "compat.h"
#include "getopt.h"
BEGIN_BLD_NS
int margc;
char const * const *margv;
const char *OptArgv[16];
int OptArgc;
const char *OptFull;
const char *SwitchChars = "-/";
int GetOptions(SWITCH *switches)
{
static const char *pChar = NULL;
static int OptIndex = 1;
if (!pChar)
{
if (OptIndex >= margc)
return -1;
pChar = margv[OptIndex++];
if (!pChar)
return -1;
}
OptFull = pChar;
if (!strchr(SwitchChars, *pChar))
{
pChar = NULL;
return -2;
}
pChar++;
int i;
int vd;
for (i = 0; true; i++)
{
if (!switches[i].name)
return -3;
int nLength = strlen(switches[i].name);
if (!Bstrncasecmp(pChar, switches[i].name, nLength) && (pChar[nLength]=='=' || pChar[nLength]==0))
{
pChar += nLength;
if (*pChar=='=')
{
pChar++;
}
else
{
pChar = NULL;
}
break;
}
}
vd = switches[i].at4;
OptArgc = 0;
while (OptArgc < switches[i].at8)
{
if (!pChar)
{
if (OptIndex >= margc)
break;
pChar = margv[OptIndex++];
if (strchr(SwitchChars, *pChar) != 0)
break;
}
OptArgv[OptArgc++] = pChar;
pChar = NULL;
}
return vd;
}
END_BLD_NS