chxavdirectoryreader.cpp

symbian 下的helix player源代码

/*****************************************************************************
 * chxavdirectoryreader.cpp
 * ------------------------
 *
 * Synopsis:
 * Makes locating files and sub-dirs within a dir a bit easier.
 *
 * Target:
 * Symbian OS
 *
 *
 * (c) 1995-2003 RealNetworks, Inc. Patents pending. All rights reserved.
 *
 *****************************************************************************/

// Symbian includes... 
#include <eikfutil.h>
#include <f32file.h>

// Helix includes...
#include "hxtypes.h"
#include "hxstring.h"

// Includes fromt this project...
#include "hxsym_debug.h"
#include "chxavdirectoryreader.h"
#include "chxavstringutils.h"


CHXAvDirectoryReader::CHXAvDirectoryReader(RFs& rfs)
: m_rfs(rfs)
, m_pFileEntries(0)
, m_pDirEntries(0)
, m_lastError(KErrNone)
, m_sortFlags(ESortByName | EAscending)
, m_attributes(KEntryAttNormal) // | KEntryAttSystem | KEntryAttHidden;
{
}

CHXAvDirectoryReader::~CHXAvDirectoryReader()
{
    HX_DELETE(m_pFileEntries);
    HX_DELETE(m_pDirEntries);
}


////////////////////////////////////////////////////////
// if \documents is a directory:
//
// \documents	    -> file list is empty, dir list contains 1 entry
// \documents\	    -> file list contains files; dir list contains child dirs
// \documents\*	    -> " "
// \documents\*.rm  -> file list contains all .rm files; dir list is empty
//
// dir must have trailing back-slash to collect its contents; otherwise it
// is interpreted as an entry (filename or dir)
//
//
bool
CHXAvDirectoryReader::SetToPath(const TDesC& path)
{
    _LIT(KWildcardText, "*");

    bool bSuccess = false;

    HX_DELETE(m_pFileEntries);
    HX_DELETE(m_pDirEntries);

    // check that the specified path is parseable
    m_lastError = EikFileUtils::Parse(path);
    if(KErrNone == m_lastError )
    {
	m_path = path;

	// append wildcard if name component is missing (dir specified)
	TParse parsedPath;
	parsedPath.Set(m_path, NULL, NULL);
	if( !parsedPath.NamePresent() && m_path.Length() < KMaxFileName )
	{
	    m_path.Append(KWildcardText);
	}

	m_lastError = m_rfs.GetDir(m_path, m_attributes, m_sortFlags, m_pFileEntries, m_pDirEntries);
	bSuccess = (KErrNone == m_lastError);
        if( bSuccess )
        {
            HX_ASSERT(m_pDirEntries);
            BaflUtils::RemoveSystemDirectory(*m_pDirEntries);
        }
        
    }
    else
    {
	CHXString str;
	CHXAvStringUtils::DesToString(path, str);
	DPRINTF(SYMP_FILE, ("CHXAvDirectoryReader::SetToPath(): bad path '%s'\n", (const char*)str));
	str.GetLength();
    }

    
    
    return bSuccess;
}

////////////////////////////////////////////////////////
// descend from current directory to a child directory
//
// name must not start or end with '\\'
//
bool CHXAvDirectoryReader::SetToChild(const TDesC& dir)
{
    TParse parsedPath;
    parsedPath.Set(m_path, NULL, NULL);
    parsedPath.AddDir(dir);
    return SetToPath(parsedPath.FullName());
}

////////////////////////////////////////////////////////
// move up from current directory to parent directory
//
bool CHXAvDirectoryReader::SetToParent()
{
    TParse parsedPath;
    parsedPath.Set(m_path, NULL, NULL);
    parsedPath.PopDir();
    return SetToPath(parsedPath.FullName());
}