sl@0: /*
sl@0: * Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description:
sl@0: */
sl@0: /*
sl@0: * ==============================================================================
sl@0: *  Name        : getcwd.cpp
sl@0: *  Part of     : libc library
sl@0: *  Description : gets current working directory.
sl@0: *
sl@0: * ============================================================================
sl@0: */
sl@0: 
sl@0: #include "sysif.h"
sl@0: #include <sys/errno.h> //error codes (ENOMEM, EINVAL)
sl@0: #include "sysreent.h"
sl@0: #include <string.h> //strlen
sl@0: #include <stdlib.h>
sl@0: 
sl@0: extern "C" {
sl@0: 
sl@0: /*
sl@0: Gets the path name of the current working directory.
sl@0: If a buffer is specified, the path name is placed in that buffer,
sl@0: and the address of the buffer is returned. 
sl@0: */
sl@0: EXPORT_C char* getcwd (char *_buf, size_t _size)
sl@0: 	{
sl@0: 	
sl@0:         if (_buf != 0 && _size == 0)
sl@0: 		{
sl@0: 		errno = EINVAL;
sl@0: 		return NULL;
sl@0: 		}
sl@0: 	
sl@0: 	char * _ourbuf = _buf;	
sl@0: 	if (_buf==0)
sl@0: 		{
sl@0: 		if (_size >= (KMaxTInt/2))
sl@0: 			{
sl@0: 			errno=ENOMEM;
sl@0: 			return _buf;
sl@0: 			}
sl@0: 		//coverity[alloc_fn]
sl@0: 		//coverity[assign]
sl@0: 		_ourbuf = (char *)	malloc(_size);
sl@0: 		if (_ourbuf == 0)
sl@0: 			{
sl@0: 			errno=ENOMEM;
sl@0: 			return _buf;
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0:    //we are dealing with wide characters from here so we need a temporary buffer
sl@0: 	wchar_t tmpbuf[KMaxFullName];
sl@0: 	//coverity[leave_without_push]
sl@0: 	wchar_t *cret = _getcwd_r(&errno, tmpbuf, _size);
sl@0: 
sl@0: 	if (cret)	//we have a path
sl@0: 		{
sl@0: 		//convert it to UTF8
sl@0: 		size_t x = wcstombs(_ourbuf, tmpbuf, _size);	//convert the buffer
sl@0: 		
sl@0: 		//remove the trailing backslash
sl@0:               int cwd_len = strlen(_ourbuf);
sl@0: 		if(_ourbuf[cwd_len - 1] == '\\')
sl@0: 			_ourbuf[cwd_len - 1] = '\0';
sl@0: 		
sl@0: 		return _ourbuf;
sl@0: 		}
sl@0: 
sl@0: 	//deal with the fact we may have allocated our own buffer
sl@0: 	if (_buf != _ourbuf)  //we allocated it.
sl@0: 		{
sl@0: 			free(_ourbuf);
sl@0:        	}
sl@0:        	
sl@0: 	return NULL;
sl@0: 	}
sl@0: 
sl@0: } // extern "C"