unixdir.cpp

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved. 
 *      
 * The contents of this file, and the files included with this file, are 
 * subject to the current version of the RealNetworks Public Source License 
 * Version 1.0 (the "RPSL") available at 
 * http://www.helixcommunity.org/content/rpsl unless you have licensed 
 * the file under the RealNetworks Community Source License Version 1.0 
 * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl, 
 * in which case the RCSL will apply. You may also obtain the license terms 
 * directly from RealNetworks.  You may not use this file except in 
 * compliance with the RPSL or, if you have a valid RCSL with RealNetworks 
 * applicable to this file, the RCSL.  Please see the applicable RPSL or 
 * RCSL for the rights, obligations and limitations governing use of the 
 * contents of the file.  
 *  
 * This file is part of the Helix DNA Technology. RealNetworks is the 
 * developer of the Original Code and owns the copyrights in the portions 
 * it created. 
 *  
 * This file, and the files included with this file, is distributed and made 
 * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
 * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS 
 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * 
 * Technology Compatibility Kit Test Suite(s) Location: 
 *    http://www.helixcommunity.org/content/tck 
 * 
 * Contributor(s): 
 *  
 * ***** END LICENSE BLOCK ***** */ 

#include <stdio.h>
#include <sys/types.h>
#include <dirent.h>
#include <errno.h>

#include "hxtypes.h"

#include "hxstrutl.h"

#include "hxdirlist.h"
#include "unixdir.h"

Dir_list* Dir_list::create(const char* path)
{
    return new Unix_dir_list(path);
}

Unix_dir_list::Unix_dir_list(const char* _path)
{
    path = new_string(_path);
    _dir_handle = opendir(path);
    if (_dir_handle == 0) 
    {
	_error = errno;
    }
}

Unix_dir_list::~Unix_dir_list()
{
    delete[] path;
    if (_dir_handle)
    {
    	closedir(_dir_handle);
    }
}

const char* Unix_dir_list::get_next()
{
    struct dirent*  current_entry;

    current_entry = readdir(_dir_handle);
    if (current_entry == 0) 
    {
	_error = errno;
	return 0;
    }
    return current_entry->d_name;
}

int
Unix_dir_list::valid_file_name(const char* name)
{
    if ( (strcmp(name,"..") == 0) || (strcmp(name, ".") == 0) )
    {
	return 0;
    }
    return 1;
}

int
Unix_dir_list::is_empty()
{
    DIR*   		dh;
    struct dirent*	current_entry;

    dh = opendir(path);
    if (dh == 0)
    {
	_error = errno;
	return 1;
    }

    current_entry = readdir(dh);
    while (current_entry != 0)
    {
	if (valid_file_name(current_entry->d_name))
	{
	    closedir(dh);
	    return 0;
	}
    	current_entry = readdir(dh);
    }
    closedir(dh);
    return 1;
}