fixed MSVC6 warning

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

diff --git a/src/common/ffile.cpp b/src/common/ffile.cpp
index f880a43134e3b1ec8f0c3f31ff0aa3c18f0f8679..866dc2ef6a348a99287ad981409761b5c5f23d07 100644 (file)
--- a/src/common/ffile.cpp
+++ b/src/common/ffile.cpp
@@ -1,12 +1,12 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        ffile.cpp
-// Purpose:     wxFFile - encapsulates "FILE *" IO stream
+// Purpose:     wxFFile encapsulates "FILE *" IO stream
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     14.07.99
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
@@ -17,7 +17,7 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
     #pragma implementation "ffile.h"
 #endif
 
@@ -28,7 +28,7 @@
   #pragma hdrstop
 #endif
 
-#if wxUSE_FILE
+#if wxUSE_FFILE
 
 #ifndef WX_PRECOMP
     #include "wx/intl.h"
@@ -45,29 +45,29 @@
 // opening the file
 // ----------------------------------------------------------------------------
 
-wxFFile::wxFFile(const wxChar *filename, const char *mode)
+wxFFile::wxFFile(const wxChar *filename, const wxChar *mode)
 {
     Detach();
 
     (void)Open(filename, mode);
 }
 
-bool wxFFile::Open(const wxChar *filename, const char *mode)
+bool wxFFile::Open(const wxChar *filename, const wxChar *mode)
 {
-    wxASSERT_MSG( !m_fp, _T("should close or detach the old file first") );
+    wxASSERT_MSG( !m_fp, wxT("should close or detach the old file first") );
 
-    m_fp = fopen(filename, mode);
+    m_fp = wxFopen(filename, mode);
 
     if ( !m_fp )
     {
         wxLogSysError(_("can't open file '%s'"), filename);
 
-        return FALSE;
+        return false;
     }
 
     m_name = filename;
 
-    return TRUE;
+    return true;
 }
 
 bool wxFFile::Close()
@@ -78,13 +78,13 @@ bool wxFFile::Close()
         {
             wxLogSysError(_("can't close file '%s'"), m_name.c_str());
 
-            return FALSE;
+            return false;
         }
 
         Detach();
     }
 
-    return TRUE;
+    return true;
 }
 
 // ----------------------------------------------------------------------------
@@ -93,8 +93,8 @@ bool wxFFile::Close()
 
 bool wxFFile::ReadAll(wxString *str)
 {
-    wxCHECK_MSG( str, FALSE, _T("invalid parameter") );
-    wxCHECK_MSG( IsOpened(), FALSE, _T("can't read from closed file") );
+    wxCHECK_MSG( str, false, wxT("invalid parameter") );
+    wxCHECK_MSG( IsOpened(), false, wxT("can't read from closed file") );
 
     clearerr(m_fp);
 
@@ -110,7 +110,7 @@ bool wxFFile::ReadAll(wxString *str)
         {
             wxLogSysError(_("Read error on file '%s'"), m_name.c_str());
 
-            return FALSE;
+            return false;
         }
         //else: just EOF
 
@@ -118,13 +118,13 @@ bool wxFFile::ReadAll(wxString *str)
         *str += buf;
     }
 
-    return TRUE;
+    return true;
 }
 
 size_t wxFFile::Read(void *pBuf, size_t nCount)
 {
-    wxCHECK_MSG( pBuf, FALSE, _T("invalid parameter") );
-    wxCHECK_MSG( IsOpened(), FALSE, _T("can't read from closed file") );
+    wxCHECK_MSG( pBuf, FALSE, wxT("invalid parameter") );
+    wxCHECK_MSG( IsOpened(), FALSE, wxT("can't read from closed file") );
 
     size_t nRead = fread(pBuf, 1, nCount, m_fp);
     if ( (nRead < nCount) && Error() )
@@ -137,8 +137,8 @@ size_t wxFFile::Read(void *pBuf, size_t nCount)
 
 size_t wxFFile::Write(const void *pBuf, size_t nCount)
 {
-    wxCHECK_MSG( pBuf, FALSE, _T("invalid parameter") );
-    wxCHECK_MSG( IsOpened(), FALSE, _T("can't write to closed file") );
+    wxCHECK_MSG( pBuf, FALSE, wxT("invalid parameter") );
+    wxCHECK_MSG( IsOpened(), FALSE, wxT("can't write to closed file") );
 
     size_t nWritten = fwrite(pBuf, 1, nCount, m_fp);
     if ( nWritten < nCount )
@@ -153,15 +153,17 @@ bool wxFFile::Flush()
 {
     if ( IsOpened() )
     {
-        if ( !fflush(m_fp) )
+        // fflush returns non-zero on error
+        //
+        if ( fflush(m_fp) )
         {
             wxLogSysError(_("failed to flush the file '%s'"), m_name.c_str());
 
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 // ----------------------------------------------------------------------------
@@ -170,13 +172,13 @@ bool wxFFile::Flush()
 
 bool wxFFile::Seek(long ofs, wxSeekMode mode)
 {
-    wxCHECK_MSG( IsOpened(), FALSE, _T("can't seek on closed file") );
+    wxCHECK_MSG( IsOpened(), false, wxT("can't seek on closed file") );
 
     int origin;
     switch ( mode )
     {
         default:
-            wxFAIL_MSG(_T("unknown seek mode"));
+            wxFAIL_MSG(wxT("unknown seek mode"));
             // still fall through
 
         case wxFromStart:
@@ -196,14 +198,17 @@ bool wxFFile::Seek(long ofs, wxSeekMode mode)
     {
         wxLogSysError(_("Seek error on file '%s'"), m_name.c_str());
 
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 size_t wxFFile::Tell() const
 {
+    wxCHECK_MSG( IsOpened(), (size_t)-1,
+                 _T("wxFFile::Tell(): file is closed!") );
+
     long rc = ftell(m_fp);
     if ( rc == -1 )
     {
@@ -216,6 +221,9 @@ size_t wxFFile::Tell() const
 
 size_t wxFFile::Length() const
 {
+    wxCHECK_MSG( IsOpened(), (size_t)-1,
+                 _T("wxFFile::Length(): file is closed!") );
+
     wxFFile& self = *(wxFFile *)this;   // const_cast
 
     size_t posOld = Tell();
@@ -234,4 +242,4 @@ size_t wxFFile::Length() const
     return (size_t)-1;
 }
 
-#endif // wxUSE_FILE
+#endif // wxUSE_FFILE