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BUG#: 5314
TITLE: IPC Refactoring

DESCRIPTION: This patch cleans up the IPC related classes. It (1) reorganizes
related classes into their own headers, (2) makes the mutex class recursive to
eliminate recursive lock exclusion logic, (3) reimplements condition variables,
renames dozens of global functions.

//%2006////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development
// Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.
// Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
// IBM Corp.; EMC Corporation, The Open Group.
// Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
// IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
// Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
// EMC Corporation; VERITAS Software Corporation; The Open Group.
// Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.;
// EMC Corporation; Symantec Corporation; The Open Group.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//==============================================================================
//
// Author: Mike Brasher (mbrasher@bmc.com)
//
// Modified By: Amit K Arora, IBM (amita@in.ibm.com)
//
//%/////////////////////////////////////////////////////////////////////////////

#include "Dir.h"
#include "InternalException.h"

#include <iostream>

#ifdef PEGASUS_OS_OS400
typedef struct os400_pnstruct
{
  Qlg_Path_Name_T qlg_struct;
  char * pn;
} OS400_PNSTRUCT;
#endif


PEGASUS_NAMESPACE_BEGIN

// Clone the string to a plain old C-String and null out
// trailing slash (if any).

static CString _clonePath(const String& path)
{
    String clone = path;

    if (clone.size() && clone[clone.size()-1] == '/')
        clone.remove(clone.size()-1);

    return clone.getCString();
}

Dir::Dir(const String& path)
    : _path(path)
{

#ifdef PEGASUS_OS_OS400
    CString tmpPathclone = _clonePath(_path);
    const char* tmpPath = tmpPathclone;
    OS400_PNSTRUCT pathname;
    memset((void*)&pathname, 0x00, sizeof(OS400_PNSTRUCT));
    pathname.qlg_struct.CCSID = 1208;
#pragma convert(37)
    memcpy(pathname.qlg_struct.Country_ID,"US",2);
    memcpy(pathname.qlg_struct.Language_ID,"ENU",3);
#pragma convert(0)
    pathname.qlg_struct.Path_Type = QLG_PTR_SINGLE;
    pathname.qlg_struct.Path_Length = strlen(tmpPath);
    pathname.qlg_struct.Path_Name_Delimiter[0] = '/';
    pathname.pn = (char *)tmpPath;
    _dirRep.dir = QlgOpendir((Qlg_Path_Name_T *)&pathname);
#else
    _dirRep.dir = opendir(_clonePath(_path));
#endif
    if (_dirRep.dir)
    {
#ifdef PEGASUS_HAS_READDIR_R
	// Need to use readdir_r since we are multithreaded
#ifdef PEGASUS_OS_OS400
	if (QlgReaddir_r(_dirRep.dir, &_dirRep.buffer, &_dirRep.entry) != 0)
#else
	if (readdir_r(_dirRep.dir, &_dirRep.buffer, &_dirRep.entry) != 0)
#endif
        {
	    _more = false;
            closedir(_dirRep.dir);
	    throw CannotOpenDirectory(_path);
        }
#else
	_dirRep.entry = readdir(_dirRep.dir);
#endif
	_more = _dirRep.entry != NULL;
    }
    else
    {
	_more = false;
	throw CannotOpenDirectory(_path);
    }
}

Dir::~Dir()
{
    if (_dirRep.dir)
	closedir(_dirRep.dir);

}


const char* Dir::getName() const
{
#ifdef PEGASUS_OS_OS400
    _dirRep.entry->d_lg_name[_dirRep.entry->d_lg_qlg.Path_Length] = 0x00;
    return _more ? _dirRep.entry->d_lg_name : "";
#else
    return _more ? _dirRep.entry->d_name : "";
#endif
}

void Dir::next()
{
    if (_more)
    {
#ifdef PEGASUS_HAS_READDIR_R
	// Need to use readdir_r since we are multithreaded
#ifdef PEGASUS_OS_OS400
	if (QlgReaddir_r(_dirRep.dir, &_dirRep.buffer, &_dirRep.entry) != 0)
#else
#ifdef PEGASUS_OS_ZOS
    errno=0;
#endif
    if (readdir_r(_dirRep.dir, &_dirRep.buffer, &_dirRep.entry) != 0)
#endif
        {
	    _more = false;
	    throw CannotOpenDirectory(_path);
        }
#else
	_dirRep.entry = readdir(_dirRep.dir);
#endif
	_more = _dirRep.entry != NULL;
    }
}

PEGASUS_NAMESPACE_END