Tightened icon and cursor file detection heuristics.

[wxWidgets.git] / src / common / file.cpp

diff --git a/src/common/file.cpp b/src/common/file.cpp
index 127a04feb4f4e1d4920188c2ee66aa3067b5e0c0..f3f502597390dd11a6fb0112c27fa5d4e4b4b6a9 100644 (file)
--- a/src/common/file.cpp
+++ b/src/common/file.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        file.cpp
+// Name:        src/common/file.cpp

 // Purpose:     wxFile - encapsulates low-level "file descriptor"
 //              wxTempFile
 // Author:      Vadim Zeitlin
 // Purpose:     wxFile - encapsulates low-level "file descriptor"
 //              wxTempFile
 // Author:      Vadim Zeitlin


@@ -7,140 +7,132 @@
 // Created:     29/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
 // Created:     29/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>

-// Licence:     wxWindows license
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------
 
 /////////////////////////////////////////////////////////////////////////////
 
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------
 

-#ifdef __GNUG__
-    #pragma implementation "file.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"

-#include "wx/defs.h"

 
 #ifdef __BORLANDC__
 
 #ifdef __BORLANDC__

-    #pragma hdrstop
+  #pragma hdrstop

 #endif
 
 #endif
 

-// standard
-#if   defined(__WXMSW__) && !defined(__GNUWIN32__)
-  #include  <io.h>
-
-#ifndef __SALFORDC__
-  #define   WIN32_LEAN_AND_MEAN
-  #define   NOSERVICE
-  #define   NOIME
-  #define   NOATOM
-  #define   NOGDI
-  #define   NOGDICAPMASKS
-  #define   NOMETAFILE
-  #define   NOMINMAX
-  #define   NOMSG
-  #define   NOOPENFILE
-  #define   NORASTEROPS
-  #define   NOSCROLL
-  #define   NOSOUND
-  #define   NOSYSMETRICS
-  #define   NOTEXTMETRIC
-  #define   NOWH
-  #define   NOCOMM
-  #define   NOKANJI
-  #define   NOCRYPT
-  #define   NOMCX
-#endif
+#if wxUSE_FILE

 
 

-  #include  <windows.h>     // for GetTempFileName
+// standard
+#if defined(__WXMSW__) && !defined(__GNUWIN32__) && !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
+
+#define   WIN32_LEAN_AND_MEAN
+#define   NOSERVICE
+#define   NOIME
+#define   NOATOM
+#define   NOGDI
+#define   NOGDICAPMASKS
+#define   NOMETAFILE
+#define   NOMINMAX
+#define   NOMSG
+#define   NOOPENFILE
+#define   NORASTEROPS
+#define   NOSCROLL
+#define   NOSOUND
+#define   NOSYSMETRICS
+#define   NOTEXTMETRIC
+#define   NOWH
+#define   NOCOMM
+#define   NOKANJI
+#define   NOCRYPT
+#define   NOMCX
+
+#elif defined(__WXMSW__) && defined(__WXWINCE__)
+    #include  "wx/msw/missing.h"
+#elif (defined(__OS2__))
+    #include <io.h>

 #elif (defined(__UNIX__) || defined(__GNUWIN32__))
     #include  <unistd.h>
 #elif (defined(__UNIX__) || defined(__GNUWIN32__))
     #include  <unistd.h>

+    #include  <time.h>
+    #include  <sys/stat.h>

     #ifdef __GNUWIN32__
     #ifdef __GNUWIN32__

-        #include <windows.h>
+        #include "wx/msw/wrapwin.h"
+    #endif
+#elif defined(__DOS__)
+    #if defined(__WATCOMC__)
+       #include <io.h>
+    #elif defined(__DJGPP__)
+       #include <io.h>
+       #include <unistd.h>
+       #include <stdio.h>
+    #else
+        #error  "Please specify the header with file functions declarations."

     #endif
 #elif (defined(__WXSTUBS__))
     // Have to ifdef this for different environments
     #include <io.h>
 #elif (defined(__WXMAC__))
     #endif
 #elif (defined(__WXSTUBS__))
     // Have to ifdef this for different environments
     #include <io.h>
 #elif (defined(__WXMAC__))

+#if __MSL__ < 0x6000

     int access( const char *path, int mode ) { return 0 ; }
     int access( const char *path, int mode ) { return 0 ; }

+#else
+    int _access( const char *path, int mode ) { return 0 ; }
+#endif

     char* mktemp( char * path ) { return path ;}
     char* mktemp( char * path ) { return path ;}

-    #include  <unistd.h>
-    #include  <unix.h>
-    #define   W_OK        2
-    #define   R_OK        4
+    #include <stat.h>
+    #include <unistd.h>
+#elif defined(__WXPALMOS__)
+    #include "wx/palmos/missing.h"

 #else
     #error  "Please specify the header with file functions declarations."
 #endif  //Win/UNIX
 
 #include  <stdio.h>       // SEEK_xxx constants
 #else
     #error  "Please specify the header with file functions declarations."
 #endif  //Win/UNIX
 
 #include  <stdio.h>       // SEEK_xxx constants

-#include  <fcntl.h>       // O_RDONLY &c
-
-#ifndef __MWERKS__
-    #include  <sys/types.h>   // needed for stat
-    #include  <sys/stat.h>    // stat
-#endif

 
 

-// Microsoft compiler loves underscores, feed them to it
-#ifdef  __VISUALC__
-  // functions
-  #define   open        _open
-  #define   close       _close
-  #define   read        _read
-  #define   write       _write
-  #define   lseek       _lseek
-  #define   fsync       _commit
-  #define   access      _access
-  #define   eof         _eof
-
-  // types
-  #define   stat        _stat
-
-  // constants
-
-  #define   O_RDONLY    _O_RDONLY
-  #define   O_WRONLY    _O_WRONLY
-  #define   O_RDWR      _O_RDWR
-  #define   O_EXCL      _O_EXCL
-  #define   O_CREAT     _O_CREAT
-  #define   O_BINARY    _O_BINARY
-
-  #define   S_IFDIR     _S_IFDIR
-  #define   S_IFREG     _S_IFREG
-#else
-  #define   tell(fd)    lseek(fd, 0, SEEK_CUR)
-#endif  // VC++
-
-#if defined(__BORLANDC__) || defined(_MSC_VER)
-  #define   W_OK        2
-  #define   R_OK        4
+#ifndef __WXWINCE__
+    #include <errno.h>

 #endif
 
 #endif
 

-// there is no distinction between text and binary files under Unix
-#ifdef    __UNIX__
-  #define   O_BINARY    (0)
+// Windows compilers don't have these constants
+#ifndef W_OK
+    enum
+    {
+        F_OK = 0,   // test for existence
+        X_OK = 1,   //          execute permission
+        W_OK = 2,   //          write
+        R_OK = 4    //          read
+    };
+#endif // W_OK
+
+// wxWidgets
+#ifndef WX_PRECOMP
+    #include  "wx/string.h"
+    #include  "wx/intl.h"
+    #include  "wx/log.h"
+    #include "wx/crt.h"
+#endif // !WX_PRECOMP
+
+#include  "wx/filename.h"
+#include  "wx/file.h"
+#include  "wx/filefn.h"
+
+// there is no distinction between text and binary files under Unix, so define
+// O_BINARY as 0 if the system headers don't do it already
+#if defined(__UNIX__) && !defined(O_BINARY)
+    #define   O_BINARY    (0)

 #endif  //__UNIX__
 
 #endif  //__UNIX__
 

-#ifdef __SALFORDC__
-    #include <unix.h>
+#ifdef __WXMSW__
+    #include "wx/msw/mslu.h"

 #endif
 
 #endif
 

-// wxWindows
-#include  <wx/string.h>
-#include  <wx/intl.h>
-#include  <wx/file.h>
-#include  <wx/log.h>
+#ifdef __WXWINCE__
+    #include "wx/msw/private.h"
+#endif

 
 #ifndef MAX_PATH
     #define MAX_PATH 512
 #endif
 
 
 #ifndef MAX_PATH
     #define MAX_PATH 512
 #endif
 

-#ifdef __WXMAC__
-    char gwxMacFileName[ MAX_PATH ] ;
-    char gwxMacFileName2[ MAX_PATH ] ;
-    char gwxMacFileName3[ MAX_PATH ] ;
-#endif
-

 // ============================================================================
 // implementation of wxFile
 // ============================================================================
 // ============================================================================
 // implementation of wxFile
 // ============================================================================


@@ -148,35 +140,36 @@
 // ----------------------------------------------------------------------------
 // static functions
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // static functions
 // ----------------------------------------------------------------------------

-bool wxFile::Exists(const char *name)
-{
-#ifdef __SALFORDC__
-  struct _stat st;
-#else
-  struct stat st;
-#endif

 
 

-  return !access(name, 0) && !stat((char*) name, &st) && (st.st_mode & S_IFREG);
+bool wxFile::Exists(const wxString& name)
+{
+    return wxFileExists(name);

 }
 
 }
 

-bool wxFile::Access(const char *name, OpenMode mode)
+bool wxFile::Access(const wxString& name, OpenMode mode)

 {
 {

-  int how = 0;
+    int how;

 
 

-  switch ( mode ) {
-    case read:
-      how = R_OK;
-      break;
+    switch ( mode )
+    {
+        default:
+            wxFAIL_MSG(wxT("bad wxFile::Access mode parameter."));
+            // fall through

 
 

-    case write:
-      how = W_OK;
-      break;
+        case read:
+            how = R_OK;
+            break;

 
 

-    default:
-      wxFAIL_MSG("bad wxFile::Access mode parameter.");
-  }
+        case write:
+            how = W_OK;
+            break;

 
 

-  return access(name, how) == 0;
+        case read_write:
+            how = R_OK | W_OK;
+            break;
+    }
+
+    return wxAccess(name, how) == 0;

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -184,96 +177,116 @@ bool wxFile::Access(const char *name, OpenMode mode)
 // ----------------------------------------------------------------------------
 
 // ctors
 // ----------------------------------------------------------------------------
 
 // ctors

-wxFile::wxFile(const char *szFileName, OpenMode mode)
+wxFile::wxFile(const wxString& fileName, OpenMode mode)

 {
 {

-  m_fd = fd_invalid;
-  m_error = FALSE;
+    m_fd = fd_invalid;
+    m_lasterror = 0;

 
 

-  Open(szFileName, mode);
+    Open(fileName, mode);

 }
 
 }
 

-// dtor
-wxFile::~wxFile()
+bool wxFile::CheckForError(wxFileOffset rc) const

 {
 {

-  Close();
+    if ( rc != -1 )
+        return false;
+
+    const_cast<wxFile *>(this)->m_lasterror =
+#ifndef __WXWINCE__
+                                                errno
+#else
+                                                ::GetLastError()
+#endif
+                                                ;
+
+    return true;

 }
 
 // create the file, fail if it already exists and bOverwrite
 }
 
 // create the file, fail if it already exists and bOverwrite

-bool wxFile::Create(const char *szFileName, bool bOverwrite, int accessMode)
+bool wxFile::Create(const wxString& fileName, bool bOverwrite, int accessMode)

 {
 {

-  // if bOverwrite we create a new file or truncate the existing one,
-  // otherwise we only create the new file and fail if it already exists
-#ifdef __SALFORDC__
-  int fd = open(szFileName, O_WRONLY | O_CREAT |
-                (bOverwrite ? O_TRUNC : O_EXCL));
-#else
-  int fd = open(szFileName, O_WRONLY | O_CREAT |
-                (bOverwrite ? O_TRUNC : O_EXCL), accessMode);
-#endif
+    // if bOverwrite we create a new file or truncate the existing one,
+    // otherwise we only create the new file and fail if it already exists
+    int fd = wxOpen( fileName,
+                     O_BINARY | O_WRONLY | O_CREAT |
+                     (bOverwrite ? O_TRUNC : O_EXCL),
+                     accessMode );
+    if ( CheckForError(fd) )
+    {
+        wxLogSysError(_("can't create file '%s'"), fileName);
+        return false;
+    }

 
 

-  if ( fd == -1 ) {
-    wxLogSysError(_("can't create file '%s'"), szFileName);
-    return FALSE;
-  }
-  else {

     Attach(fd);
     Attach(fd);

-    return TRUE;
-  }
+    return true;

 }
 
 // open the file
 }
 
 // open the file

-bool wxFile::Open(const char *szFileName, OpenMode mode, int accessMode)
+bool wxFile::Open(const wxString& fileName, OpenMode mode, int accessMode)

 {
 {

-  int flags = O_BINARY;
-
-  switch ( mode ) {
-    case read:
-      flags |= O_RDONLY;
-      break;
-
-    case write:
-      flags |= O_WRONLY | O_CREAT | O_TRUNC;
-      break;
+    int flags = O_BINARY;
+
+    switch ( mode )
+    {
+        case read:
+            flags |= O_RDONLY;
+            break;
+
+        case write_append:
+            if ( wxFile::Exists(fileName) )
+            {
+                flags |= O_WRONLY | O_APPEND;
+                break;
+            }
+            //else: fall through as write_append is the same as write if the
+            //      file doesn't exist
+
+        case write:
+            flags |= O_WRONLY | O_CREAT | O_TRUNC;
+            break;
+
+        case write_excl:
+            flags |= O_WRONLY | O_CREAT | O_EXCL;
+            break;
+
+        case read_write:
+            flags |= O_RDWR;
+            break;
+    }

 
 

-    case write_append:
-      flags |= O_WRONLY | O_APPEND;
-      break;
+#ifdef __WINDOWS__
+    // only read/write bits for "all" are supported by this function under
+    // Windows, and VC++ 8 returns EINVAL if any other bits are used in
+    // accessMode, so clear them as they have at best no effect anyhow
+    accessMode &= wxS_IRUSR | wxS_IWUSR;
+#endif // __WINDOWS__

 
 

-    case read_write:
-      flags |= O_RDWR;
-      break;
-  }
+    int fd = wxOpen( fileName, flags, accessMode);

 
 

-#ifdef __SALFORDC__
-  int fd = open(szFileName, flags);
-#else
-  int fd = open(szFileName, flags, accessMode);
-#endif
+    if ( CheckForError(fd) )
+    {
+        wxLogSysError(_("can't open file '%s'"), fileName);
+        return false;
+    }

 
 

-  if ( fd == -1 ) {
-    wxLogSysError(_("can't open file '%s'"), szFileName);
-    return FALSE;
-  }
-  else {

     Attach(fd);
     Attach(fd);

-    return TRUE;
-  }
+    return true;

 }
 
 // close
 bool wxFile::Close()
 {
 }
 
 // close
 bool wxFile::Close()
 {

-  if ( IsOpened() ) {
-    if ( close(m_fd) == -1 ) {
-      wxLogSysError(_("can't close file descriptor %d"), m_fd);
-      m_fd = fd_invalid;
-      return FALSE;
+    if ( IsOpened() ) {
+        if ( CheckForError(wxClose(m_fd)) )
+        {
+            wxLogSysError(_("can't close file descriptor %d"), m_fd);
+            m_fd = fd_invalid;
+            return false;
+        }
+        else
+            m_fd = fd_invalid;

     }
     }

-    else
-      m_fd = fd_invalid;
-  }

 
 

-  return TRUE;
+    return true;

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -281,58 +294,69 @@ bool wxFile::Close()
 // ----------------------------------------------------------------------------
 
 // read
 // ----------------------------------------------------------------------------
 
 // read

-off_t wxFile::Read(void *pBuf, off_t nCount)
+ssize_t wxFile::Read(void *pBuf, size_t nCount)

 {
 {

-  wxCHECK( (pBuf != NULL) && IsOpened(), 0 );
+    wxCHECK( (pBuf != NULL) && IsOpened(), 0 );

 
 

-#ifdef __MWERKS__
-  int iRc = ::read(m_fd, (char*) pBuf, nCount);
-#else
-  int iRc = ::read(m_fd, pBuf, nCount);
-#endif
-  if ( iRc == -1 ) {
-    wxLogSysError(_("can't read from file descriptor %d"), m_fd);
-    return wxInvalidOffset;
-  }
-  else
-    return (size_t)iRc;
+    ssize_t iRc = wxRead(m_fd, pBuf, nCount);
+
+    if ( CheckForError(iRc) )
+    {
+        wxLogSysError(_("can't read from file descriptor %d"), m_fd);
+        return wxInvalidOffset;
+    }
+
+    return iRc;

 }
 
 // write
 size_t wxFile::Write(const void *pBuf, size_t nCount)
 {
 }
 
 // write
 size_t wxFile::Write(const void *pBuf, size_t nCount)
 {

-  wxCHECK( (pBuf != NULL) && IsOpened(), 0 );
+    wxCHECK( (pBuf != NULL) && IsOpened(), 0 );

 
 

-#ifdef __MWERKS__
-  int iRc = ::write(m_fd, (const char*) pBuf, nCount);
+    ssize_t iRc = wxWrite(m_fd, pBuf, nCount);
+
+    if ( CheckForError(iRc) )
+    {
+        wxLogSysError(_("can't write to file descriptor %d"), m_fd);
+        iRc = 0;
+    }
+
+    return iRc;
+}
+
+bool wxFile::Write(const wxString& s, const wxMBConv& conv)
+{
+  const wxWX2MBbuf buf = s.mb_str(conv);
+  if ( !buf )
+      return false;
+
+#if wxUSE_UNICODE
+  const size_t size = buf.length();

 #else
 #else

-  int iRc = ::write(m_fd, pBuf, nCount);
+  const size_t size = s.length();

 #endif
 #endif

-  if ( iRc == -1 ) {
-    wxLogSysError(_("can't write to file descriptor %d"), m_fd);
-    m_error = TRUE;
-    return 0;
-  }
-  else
-    return iRc;
+
+  return Write(buf, size) == size;

 }
 
 // flush
 bool wxFile::Flush()
 {
 }
 
 // flush
 bool wxFile::Flush()
 {

-  if ( IsOpened() ) {
-    #if defined(__VISUALC__) || wxHAVE_FSYNC
-        if ( fsync(m_fd) == -1 )
+#ifdef HAVE_FSYNC
+    // fsync() only works on disk files and returns errors for pipes, don't
+    // call it then
+    if ( IsOpened() && GetKind() == wxFILE_KIND_DISK )
+    {
+        if ( CheckForError(wxFsync(m_fd)) )

         {
             wxLogSysError(_("can't flush file descriptor %d"), m_fd);
         {
             wxLogSysError(_("can't flush file descriptor %d"), m_fd);

-            return FALSE;
+            return false;

         }
         }

-    #else // no fsync
-        // just do nothing
-    #endif // fsync
-  }
+    }
+#endif // HAVE_FSYNC

 
 

-  return TRUE;
+    return true;

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -340,119 +364,129 @@ bool wxFile::Flush()
 // ----------------------------------------------------------------------------
 
 // seek
 // ----------------------------------------------------------------------------
 
 // seek

-off_t wxFile::Seek(off_t ofs, wxSeekMode mode)
+wxFileOffset wxFile::Seek(wxFileOffset ofs, wxSeekMode mode)

 {
 {

-  wxASSERT( IsOpened() );
-
-  int flag = -1;
-  switch ( mode ) {
-    case wxFromStart:
-      flag = SEEK_SET;
-      break;
-
-    case wxFromCurrent:
-      flag = SEEK_CUR;
-      break;
-
-    case wxFromEnd:
-      flag = SEEK_END;
-      break;
-
-    default:
-      wxFAIL_MSG(_("unknown seek origin"));
-  }
-
-  int iRc = lseek(m_fd, ofs, flag);
-  if ( iRc == -1 ) {
-    wxLogSysError(_("can't seek on file descriptor %d"), m_fd);
-    return wxInvalidOffset;
-  }
-  else
-    return (off_t)iRc;
+    wxASSERT_MSG( IsOpened(), wxT("can't seek on closed file") );
+    wxCHECK_MSG( ofs != wxInvalidOffset || mode != wxFromStart,
+                 wxInvalidOffset,
+                 wxT("invalid absolute file offset") );
+
+    int origin;
+    switch ( mode ) {
+        default:
+            wxFAIL_MSG(wxT("unknown seek origin"));
+
+        case wxFromStart:
+            origin = SEEK_SET;
+            break;
+
+        case wxFromCurrent:
+            origin = SEEK_CUR;
+            break;
+
+        case wxFromEnd:
+            origin = SEEK_END;
+            break;
+    }
+
+    wxFileOffset iRc = wxSeek(m_fd, ofs, origin);
+    if ( CheckForError(iRc) )
+    {
+        wxLogSysError(_("can't seek on file descriptor %d"), m_fd);
+    }
+
+    return iRc;

 }
 
 }
 

-// get current off_t
-off_t wxFile::Tell() const
+// get current file offset
+wxFileOffset wxFile::Tell() const

 {
 {

-  wxASSERT( IsOpened() );
-
-  int iRc = tell(m_fd);
-  if ( iRc == -1 ) {
-    wxLogSysError(_("can't get seek position on file descriptor %d"), m_fd);
-    return wxInvalidOffset;
-  }
-  else
-    return (off_t)iRc;
+    wxASSERT( IsOpened() );
+
+    wxFileOffset iRc = wxTell(m_fd);
+    if ( CheckForError(iRc) )
+    {
+        wxLogSysError(_("can't get seek position on file descriptor %d"), m_fd);
+    }
+
+    return iRc;

 }
 
 // get current file length
 }
 
 // get current file length

-off_t wxFile::Length() const
+wxFileOffset wxFile::Length() const

 {
 {

-  wxASSERT( IsOpened() );
-
-  #ifdef __VISUALC__
-    int iRc = _filelength(m_fd);
-  #else // !VC++
-    int iRc = tell(m_fd);
-    if ( iRc != -1 ) {
-      // @ have to use const_cast :-(
-      int iLen = ((wxFile *)this)->SeekEnd();
-      if ( iLen != -1 ) {
-        // restore old position
-        if ( ((wxFile *)this)->Seek(iRc) == -1 ) {
-          // error
-          iLen = -1;
+    wxASSERT( IsOpened() );
+
+    // we use a special method for Linux systems where files in sysfs (i.e.
+    // those under /sys typically) return length of 4096 bytes even when
+    // they're much smaller -- this is a problem as it results in errors later
+    // when we try reading 4KB from them
+#ifdef __LINUX__
+    struct stat st;
+    if ( fstat(m_fd, &st) == 0 )
+    {
+        // returning 0 for the special files indicates to the caller that they
+        // are not seekable
+        return st.st_blocks ? st.st_size : 0;
+    }
+    //else: failed to stat, try the normal method
+#endif // __LINUX__
+
+    wxFileOffset iRc = Tell();
+    if ( iRc != wxInvalidOffset ) {
+        wxFileOffset iLen = const_cast<wxFile *>(this)->SeekEnd();
+        if ( iLen != wxInvalidOffset ) {
+            // restore old position
+            if ( ((wxFile *)this)->Seek(iRc) == wxInvalidOffset ) {
+                // error
+                iLen = wxInvalidOffset;
+            }

         }
         }

-      }

 
 

-      iRc = iLen;
+        iRc = iLen;
+    }
+
+    if ( iRc == wxInvalidOffset )
+    {
+        // last error was already set by Tell()
+        wxLogSysError(_("can't find length of file on file descriptor %d"), m_fd);

     }
     }

-  #endif  // VC++
-
-  if ( iRc == -1 ) {
-    wxLogSysError(_("can't find length of file on file descriptor %d"), m_fd);
-    return wxInvalidOffset;
-  }
-  else
-    return (off_t)iRc;
+
+    return iRc;

 }
 
 // is end of file reached?
 bool wxFile::Eof() const
 {
 }
 
 // is end of file reached?
 bool wxFile::Eof() const
 {

-  wxASSERT( IsOpened() );
+    wxASSERT( IsOpened() );

 
 

-  int iRc;
+    wxFileOffset iRc;

 
 

-  #if defined(__UNIX__) || defined(__GNUWIN32__) || defined( __MWERKS__ ) || defined(__SALFORDC__)
+#if defined(__DOS__) || defined(__UNIX__) || defined(__GNUWIN32__) || defined( __MWERKS__ )

     // @@ this doesn't work, of course, on unseekable file descriptors
     // @@ this doesn't work, of course, on unseekable file descriptors

-    off_t ofsCur = Tell(),
-          ofsMax = Length();
+    wxFileOffset ofsCur = Tell(),
+    ofsMax = Length();

     if ( ofsCur == wxInvalidOffset || ofsMax == wxInvalidOffset )
     if ( ofsCur == wxInvalidOffset || ofsMax == wxInvalidOffset )

-      iRc = -1;
+        iRc = wxInvalidOffset;

     else
     else

-     iRc = ofsCur == ofsMax;
-  #else  // Windows and "native" compiler
-    iRc = eof(m_fd);
-  #endif // Windows/Unix
+        iRc = ofsCur == ofsMax;
+#else  // Windows and "native" compiler
+    iRc = wxEof(m_fd);
+#endif // Windows/Unix

 
 

-  switch ( iRc ) {
-    case 1:
-      break;
+    if ( iRc == 0 )
+        return false;

 
 

-    case 0:
-      return FALSE;
-
-    case -1:
-      wxLogSysError(_("can't determine if the end of file is reached on \
-descriptor %d"), m_fd);
-      break;
-
-    default:
-      wxFAIL_MSG(_("invalid eof() return value."));
-  }
+    if ( iRc == wxInvalidOffset )
+    {
+        wxLogSysError(_("can't determine if the end of file is reached on descriptor %d"), m_fd);
+    }
+    else if ( iRc != 1 )
+    {
+        wxFAIL_MSG(wxT("invalid eof() return value."));
+    }

 
 

-  return TRUE;
+    return true;

 }
 
 // ============================================================================
 }
 
 // ============================================================================


@@ -462,39 +496,64 @@ descriptor %d"), m_fd);
 // ----------------------------------------------------------------------------
 // construction
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // construction
 // ----------------------------------------------------------------------------

+

 wxTempFile::wxTempFile(const wxString& strName)
 {
 wxTempFile::wxTempFile(const wxString& strName)
 {

-  Open(strName);
+    Open(strName);

 }
 
 bool wxTempFile::Open(const wxString& strName)
 {
 }
 
 bool wxTempFile::Open(const wxString& strName)
 {

-  m_strName = strName;
-
-  // we want to create the file in the same directory as strName because
-  // otherwise rename() in Commit() might not work (if the files are on
-  // different partitions for example). Unfortunately, the only standard
-  // (POSIX) temp file creation function tmpnam() can't do it.
-  #if defined(__UNIX__) || defined(__WXSTUBS__)|| defined( __WXMAC__ )
-    static const char *szMktempSuffix = "XXXXXX";
-    m_strTemp << strName << szMktempSuffix;
-    mktemp((char *)m_strTemp.c_str()); // will do because length doesn't change
-  #else // Windows
-    wxString strPath;
-    wxSplitPath(strName, &strPath, NULL, NULL);
-    if ( strPath.IsEmpty() )
-      strPath = '.';  // GetTempFileName will fail if we give it empty string
-#ifdef __WIN32__
-    if ( !GetTempFileName(strPath, "wx_",0, m_strTemp.GetWriteBuf(MAX_PATH)) )
-#else
-    // Not sure why MSVC++ 1.5 header defines first param as BYTE - bug?
-    if ( !GetTempFileName((BYTE) (const char*) strPath, "wx_",0, m_strTemp.GetWriteBuf(MAX_PATH)) )
+    // we must have an absolute filename because otherwise CreateTempFileName()
+    // would create the temp file in $TMP (i.e. the system standard location
+    // for the temp files) which might be on another volume/drive/mount and
+    // wxRename()ing it later to m_strName from Commit() would then fail
+    //
+    // with the absolute filename, the temp file is created in the same
+    // directory as this one which ensures that wxRename() may work later
+    wxFileName fn(strName);
+    if ( !fn.IsAbsolute() )
+    {
+        fn.Normalize(wxPATH_NORM_ABSOLUTE);
+    }
+
+    m_strName = fn.GetFullPath();
+
+    m_strTemp = wxFileName::CreateTempFileName(m_strName, &m_file);
+
+    if ( m_strTemp.empty() )
+    {
+        // CreateTempFileName() failed
+        return false;
+    }
+
+#ifdef __UNIX__
+    // the temp file should have the same permissions as the original one
+    mode_t mode;
+
+    wxStructStat st;
+    if ( stat( (const char*) m_strName.fn_str(), &st) == 0 )
+    {
+        mode = st.st_mode;
+    }
+    else
+    {
+        // file probably didn't exist, just give it the default mode _using_
+        // user's umask (new files creation should respect umask)
+        mode_t mask = umask(0777);
+        mode = 0666 & ~mask;
+        umask(mask);
+    }
+
+    if ( chmod( (const char*) m_strTemp.fn_str(), mode) == -1 )
+    {
+#ifndef __OS2__
+        wxLogSysError(_("Failed to set temporary file permissions"));

 #endif
 #endif

-      wxLogLastError("GetTempFileName");
-    m_strTemp.UngetWriteBuf();
-  #endif  // Windows/Unix
+    }
+#endif // Unix

 
 

-  return m_file.Open(m_strTemp, wxFile::write);
+    return true;

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -503,30 +562,35 @@ bool wxTempFile::Open(const wxString& strName)
 
 wxTempFile::~wxTempFile()
 {
 
 wxTempFile::~wxTempFile()
 {

-  if ( IsOpened() )
-    Discard();
+    if ( IsOpened() )
+        Discard();

 }
 
 bool wxTempFile::Commit()
 {
 }
 
 bool wxTempFile::Commit()
 {

-  m_file.Close();
+    m_file.Close();

 
 

-  if ( wxFile::Exists(m_strName) && remove(m_strName) != 0 ) {
-    wxLogSysError(_("can't remove file '%s'"), m_strName.c_str());
-    return FALSE;
-  }
+    if ( wxFile::Exists(m_strName) && wxRemove(m_strName) != 0 ) {
+        wxLogSysError(_("can't remove file '%s'"), m_strName.c_str());
+        return false;
+    }

 
 

-  if ( rename(m_strTemp, m_strName) != 0 ) {
-    wxLogSysError(_("can't commit changes to file '%s'"), m_strName.c_str());
-    return FALSE;
-  }
+    if ( !wxRenameFile(m_strTemp, m_strName)  ) {
+        wxLogSysError(_("can't commit changes to file '%s'"), m_strName.c_str());
+        return false;
+    }

 
 

-  return TRUE;
+    return true;

 }
 
 void wxTempFile::Discard()
 {
 }
 
 void wxTempFile::Discard()
 {

-  m_file.Close();
-  if ( remove(m_strTemp) != 0 )
-    wxLogSysError(_("can't remove temporary file '%s'"), m_strTemp.c_str());
+    m_file.Close();
+    if ( wxRemove(m_strTemp) != 0 )
+    {
+        wxLogSysError(_("can't remove temporary file '%s'"), m_strTemp.c_str());
+    }

 }
 }

+
+#endif // wxUSE_FILE
+