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