greenplumn CMainArgs 源码
greenplumn CMainArgs 代码
文件路径：/src/backend/gporca/libgpos/src/common/CMainArgs.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2008 - 2010 Greenplum, Inc.
//
// @filename:
// CMainArgs.cpp
//
// @doc:
// Implementation of getopt abstraction
//---------------------------------------------------------------------------
#include "gpos/common/CMainArgs.h"
#include "gpos/base.h"
#include "gpos/common/clibwrapper.h"
using namespace gpos;
//---------------------------------------------------------------------------
// @function:
// CMainArgs::CMainArgs
//
// @doc:
// ctor -- saves off all opt params
//
//---------------------------------------------------------------------------
CMainArgs::CMainArgs(ULONG argc, const CHAR **argv, const CHAR *fmt)
: m_argc(argc),
m_argv(argv),
m_fmt(fmt),
m_optarg(optarg),
m_optind(optind),
m_optopt(optopt),
m_opterr(opterr)
#ifdef GPOS_Darwin
,
m_optreset(optreset)
#endif // GPOS_Darwin
{
// initialize external opt params
optarg = nullptr;
optind = 1;
optopt = 1;
opterr = 1;
#ifdef GPOS_Darwin
optreset = 1;
#endif // GPOS_Darwin
}
//---------------------------------------------------------------------------
// @function:
// CMainArgs::~CMainArgs
//
// @doc:
// dtor -- restore previous opt params
//
//---------------------------------------------------------------------------
CMainArgs::~CMainArgs()
{
optarg = m_optarg;
optind = m_optind;
optopt = m_optopt;
opterr = m_opterr;
#ifdef GPOS_Darwin
optreset = m_optreset;
#endif // GPOS_Darwin
}
//---------------------------------------------------------------------------
// @function:
// CMainArgs::Getopt
//
// @doc:
// wraps getopt logic
//
//---------------------------------------------------------------------------
BOOL
CMainArgs::Getopt(CHAR *pch)
{
GPOS_ASSERT(nullptr != pch);
INT res = clib::Getopt(m_argc, const_cast<CHAR **>(m_argv), m_fmt);
if (res != -1)
{
*pch = (CHAR) res;
return true;
}
return false;
}
// EOF
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