141 lines
4.2 KiB
C++
Executable File
141 lines
4.2 KiB
C++
Executable File
/*
|
|
** Slab NG - The Next Generation of Slab
|
|
** (c) Copyright 2002-2004 Tom Bampton
|
|
** All Rights Reserved.
|
|
**
|
|
** $Id: Getopt.cpp,v 1.1 2003/10/30 23:55:29 tom Exp $
|
|
**
|
|
** Filename: Getopt.cpp
|
|
** Author: Tom Bampton
|
|
** Created: 30/10/2003
|
|
** Purpose:
|
|
** Command Line Parser
|
|
**
|
|
*/
|
|
|
|
/*
|
|
* Based on getopt.c from FreeBSD, bearing the following copyright message:
|
|
*
|
|
* Copyright (c) 1987, 1993, 1994
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "platform/platform.h"
|
|
#include "Getopt.h"
|
|
|
|
|
|
#define EMSG ""
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
// Construction/Destruction
|
|
//////////////////////////////////////////////////////////////////////
|
|
|
|
Getopt::Getopt(char *sOptions)
|
|
{
|
|
m_sOptions = sOptions;
|
|
m_sPlace = EMSG;
|
|
m_nOptInd = 1;
|
|
}
|
|
|
|
Getopt::~Getopt()
|
|
{
|
|
|
|
}
|
|
|
|
int Getopt::getopt(int nargc, char **nargv)
|
|
{
|
|
char *oli; /* option letter list index */
|
|
|
|
m_nargc = nargc;
|
|
m_nargv = nargv;
|
|
|
|
if (!*m_sPlace) { /* update scanning pointer */
|
|
if (m_nOptInd >= nargc || *(m_sPlace = nargv[m_nOptInd]) != '-') {
|
|
m_sPlace = EMSG;
|
|
return -1;
|
|
}
|
|
if (m_sPlace[1] && *++m_sPlace == '-') { /* found "--" */
|
|
++m_nOptInd;
|
|
m_sPlace = EMSG;
|
|
return -1;
|
|
}
|
|
} /* option letter okay? */
|
|
if ((m_nOptOpt = (int)*m_sPlace++) == (int)':' ||
|
|
!(oli = dStrchr(m_sOptions, m_nOptOpt))) {
|
|
/*
|
|
* if the user didn't specify '-' as an option,
|
|
* assume it means -1.
|
|
*/
|
|
if (m_nOptOpt == (int)'-')
|
|
return (-1);
|
|
if (!*m_sPlace)
|
|
++m_nOptInd;
|
|
if (*m_sOptions != ':' && m_nOptOpt != GO_BAD_CHAR)
|
|
return GO_INVALID_CHAR;
|
|
return (GO_BAD_CHAR);
|
|
}
|
|
if (*++oli != ':') { /* don't need argument */
|
|
m_sOptArg = NULL;
|
|
if (!*m_sPlace)
|
|
++m_nOptInd;
|
|
}
|
|
else { /* need an argument */
|
|
if (*m_sPlace) /* no white space */
|
|
m_sOptArg = m_sPlace;
|
|
else if (nargc <= ++m_nOptInd) { /* no arg */
|
|
m_sPlace = EMSG;
|
|
//if (*m_sOptions == ':')
|
|
return (GO_BAD_ARG);
|
|
//return (GO_BAD_CHAR);
|
|
}
|
|
else /* white space */
|
|
m_sOptArg = nargv[m_nOptInd];
|
|
m_sPlace = EMSG;
|
|
++m_nOptInd;
|
|
}
|
|
return (m_nOptOpt); /* dump back option letter */
|
|
}
|
|
|
|
void Getopt::Reset(void)
|
|
{
|
|
if (!*m_sPlace) { /* update scanning pointer */
|
|
if (m_nOptInd >= m_nargc || *(m_sPlace = m_nargv[m_nOptInd]) != '-') {
|
|
m_sPlace = EMSG;
|
|
return;
|
|
}
|
|
if (m_sPlace[1] && *++m_sPlace == '-') { /* found "--" */
|
|
++m_nOptInd;
|
|
m_sPlace = EMSG;
|
|
return;
|
|
}
|
|
}
|
|
}
|