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dir.cpp
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C/C++ Source or Header
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2002-01-20
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11KB
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407 lines
/////////////////////////////////////////////////////////////////////////////
// Name: os2/dir.cpp
// Purpose: wxDir implementation for OS/2
// Author: Vadim Zeitlin
// Modified by: Stefan Neis
// Created: 08.12.99
// RCS-ID: $Id: DIR.CPP,v 1.6 2002/01/20 22:02:00 SN Exp $
// Copyright: (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#ifdef __GNUG__
#pragma implementation "dir.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifndef WX_PRECOMP
#include "wx/os2/private.h"
#include "wx/intl.h"
#include "wx/log.h"
#endif // PCH
#include "wx/dir.h"
#include "wx/filefn.h" // for wxMatchWild
#include <sys/types.h>
#define INCL_DOSFILEMGR
#define INCL_DOSERRORS
#include <os2.h>
#ifdef __EMX__
#include <dirent.h>
#endif
// ----------------------------------------------------------------------------
// define the types and functions used for file searching
// ----------------------------------------------------------------------------
typedef FILEFINDBUF3 FIND_STRUCT;
typedef HDIR FIND_DATA;
typedef ULONG FIND_ATTR;
static inline FIND_DATA InitFindData() { return ERROR_INVALID_HANDLE; }
static inline bool IsFindDataOk(
FIND_DATA vFd
)
{
return vFd != ERROR_INVALID_HANDLE;
}
static inline void FreeFindData(
FIND_DATA vFd
)
{
if (!::DosFindClose(vFd))
{
wxLogLastError(_T("DosFindClose"));
}
}
static inline FIND_DATA FindFirst(
const wxString& rsSpec
, FIND_STRUCT* pFinddata
)
{
ULONG ulFindCount = 1;
FIND_DATA hDir;
FIND_ATTR rc;
rc = ::DosFindFirst( rsSpec.c_str()
,&hDir
,FILE_NORMAL
,pFinddata
,sizeof(FILEFINDBUF3)
,&ulFindCount
,FIL_STANDARD
);
if (rc != 0)
return 0;
return hDir;
}
static inline bool FindNext(
FIND_DATA vFd
, FIND_STRUCT* pFinddata
)
{
ULONG ulFindCount = 1;
return ::DosFindNext( vFd
,pFinddata
,sizeof(FILEFINDBUF3)
,&ulFindCount
) != 0;
}
static const wxChar* GetNameFromFindData(
FIND_STRUCT* pFinddata
)
{
return pFinddata->achName;
}
static const FIND_ATTR GetAttrFromFindData(
FIND_STRUCT* pFinddata
)
{
return pFinddata->attrFile;
}
static inline bool IsDir(
FIND_ATTR vAttr
)
{
return (vAttr & FILE_DIRECTORY) != 0;
}
static inline bool IsHidden(
FIND_ATTR vAttr
)
{
return (vAttr & (FILE_HIDDEN | FILE_SYSTEM)) != 0;
}
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
#ifndef MAX_PATH
#define MAX_PATH 260 // from PM++ headers
#endif
// ----------------------------------------------------------------------------
// macros
// ----------------------------------------------------------------------------
#define M_DIR ((wxDirData *)m_data)
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
// this class stores everything we need to enumerate the files
class wxDirData
{
public:
wxDirData(const wxString& rsDirname);
~wxDirData();
void SetFileSpec(const wxString& rsFilespec) { m_sFilespec = rsFilespec; }
void SetFlags(int nFlags) { m_nFlags = nFlags; }
const wxString& GetName() const { return m_sDirname; }
void Close();
void Rewind();
bool Read(wxString* rsFilename);
private:
FIND_DATA m_vFinddata;
wxString m_sDirname;
wxString m_sFilespec;
int m_nFlags;
}; // end of CLASS wxDirData
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// wxDirData
// ----------------------------------------------------------------------------
wxDirData::wxDirData(
const wxString& rsDirname
)
: m_sDirname(rsDirname)
{
m_vFinddata = InitFindData();
} // end of wxDirData::wxDirData
wxDirData::~wxDirData()
{
Close();
} // end of wxDirData::~wxDirData
void wxDirData::Close()
{
if ( IsFindDataOk(m_vFinddata) )
{
FreeFindData(m_vFinddata);
m_vFinddata = InitFindData();
}
} // end of wxDirData::Close
void wxDirData::Rewind()
{
Close();
} // end of wxDirData::Rewind
bool wxDirData::Read(
wxString* psFilename
)
{
bool bFirst = FALSE;
FILEFINDBUF3 vFinddata;
#define PTR_TO_FINDDATA (&vFinddata)
if (!IsFindDataOk(m_vFinddata))
{
//
// Open first
//
wxString sFilespec = m_sDirname;
if ( !wxEndsWithPathSeparator(sFilespec) )
{
sFilespec += _T('\\');
}
sFilespec += (!m_sFilespec ? _T("*.*") : m_sFilespec.c_str());
m_vFinddata = FindFirst( sFilespec
,PTR_TO_FINDDATA
);
bFirst = TRUE;
}
if ( !IsFindDataOk(m_vFinddata) )
{
return FALSE;
}
const wxChar* zName;
FIND_ATTR vAttr;
for ( ;; )
{
if (bFirst)
{
bFirst = FALSE;
}
else
{
if (!FindNext( m_vFinddata
,PTR_TO_FINDDATA
))
{
return FALSE;
}
}
zName = GetNameFromFindData(PTR_TO_FINDDATA);
vAttr = GetAttrFromFindData(PTR_TO_FINDDATA);
//
// Don't return "." and ".." unless asked for
//
if ( zName[0] == _T('.') &&
((zName[1] == _T('.') && zName[2] == _T('\0')) ||
(zName[1] == _T('\0'))) )
{
if (!(m_nFlags & wxDIR_DOTDOT))
continue;
}
//
// Check the type now
//
if (!(m_nFlags & wxDIR_FILES) && !IsDir(vAttr))
{
//
// It's a file, but we don't want them
//
continue;
}
else if (!(m_nFlags & wxDIR_DIRS) && IsDir(vAttr) )
{
//
// It's a dir, and we don't want it
//
continue;
}
//
// Finally, check whether it's a hidden file
//
if (!(m_nFlags & wxDIR_HIDDEN))
{
if (IsHidden(vAttr))
{
//
// It's a hidden file, skip it
//
continue;
}
}
*psFilename = zName;
break;
}
return TRUE;
} // end of wxDirData::Read
// ----------------------------------------------------------------------------
// wxDir helpers
// ----------------------------------------------------------------------------
/* static */
bool wxDir::Exists(
const wxString& rsDir
)
{
return wxPathExists(rsDir);
} // end of wxDir::Exists
// ----------------------------------------------------------------------------
// wxDir construction/destruction
// ----------------------------------------------------------------------------
wxDir::wxDir(
const wxString& rsDirname
)
{
m_data = NULL;
(void)Open(rsDirname);
} // end of wxDir::wxDir
bool wxDir::Open(
const wxString& rsDirname
)
{
delete M_DIR;
m_data = new wxDirData(rsDirname);
return TRUE;
} // end of wxDir::Open
bool wxDir::IsOpened() const
{
return m_data != NULL;
} // end of wxDir::IsOpen
wxString wxDir::GetName() const
{
wxString name;
if ( m_data )
{
name = M_DIR->GetName();
if ( !name.empty() )
{
// bring to canonical Windows form
name.Replace(_T("/"), _T("\\"));
if ( name.Last() == _T('\\') )
{
// chop off the last (back)slash
name.Truncate(name.length() - 1);
}
}
}
return name;
}
wxDir::~wxDir()
{
delete M_DIR;
} // end of wxDir::~wxDir
// ----------------------------------------------------------------------------
// wxDir enumerating
// ----------------------------------------------------------------------------
bool wxDir::GetFirst(
wxString* psFilename
, const wxString& rsFilespec
, int nFlags
) const
{
wxCHECK_MSG( IsOpened(), FALSE, _T("must wxDir::Open() first") );
M_DIR->Rewind();
M_DIR->SetFileSpec(rsFilespec);
M_DIR->SetFlags(nFlags);
return GetNext(psFilename);
} // end of wxDir::GetFirst
bool wxDir::GetNext(
wxString* psFilename
) const
{
wxCHECK_MSG( IsOpened(), FALSE, _T("must wxDir::Open() first") );
wxCHECK_MSG( psFilename, FALSE, _T("bad pointer in wxDir::GetNext()") );
return M_DIR->Read(psFilename);
} // end of wxDir::GetNext