use buffered streams to reduce the number of TCP packets used per IPC command from...

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

diff --git a/src/common/wfstream.cpp b/src/common/wfstream.cpp
index b5c9ccbb219636e841f6b920e7b6d6e0c0521924..de2af11173b63112f29ab52ba5bb787835a7b593 100644 (file)
--- a/src/common/wfstream.cpp
+++ b/src/common/wfstream.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        fstream.cpp
+// Name:        src/common/fstream.cpp
 // Purpose:     "File stream" classes
 // Author:      Julian Smart
 // Modified by:
@@ -9,23 +9,23 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "wfstream.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
-  #pragma hdrstop
+    #pragma hdrstop
 #endif
 
 #if wxUSE_STREAMS
 
-#include <stdio.h>
-#include "wx/stream.h"
 #include "wx/wfstream.h"
 
+#ifndef WX_PRECOMP
+    #include "wx/stream.h"
+#endif
+
+#include <stdio.h>
+
 #if wxUSE_FILE
 
 // ----------------------------------------------------------------------------
@@ -107,6 +107,11 @@ wxFileOffset wxFileInputStream::OnSysTell() const
     return m_file->Tell();
 }
 
+bool wxFileInputStream::IsOk() const
+{
+    return wxInputStream::IsOk() && m_file->IsOpened();
+}
+
 // ----------------------------------------------------------------------------
 // wxFileOutputStream
 // ----------------------------------------------------------------------------
@@ -178,6 +183,11 @@ wxFileOffset wxFileOutputStream::GetLength() const
     return m_file->Length();
 }
 
+bool wxFileOutputStream::IsOk() const
+{
+    return wxOutputStream::IsOk() && m_file->IsOpened();
+}
+
 // ----------------------------------------------------------------------------
 // wxTempFileOutputStream
 // ----------------------------------------------------------------------------
@@ -210,12 +220,24 @@ size_t wxTempFileOutputStream::OnSysWrite(const void *buffer, size_t size)
 // ----------------------------------------------------------------------------
 
 wxFileStream::wxFileStream(const wxString& fileName)
-            : wxFileInputStream(fileName)
+            : wxFileInputStream(),
+              wxFileOutputStream()
 {
-    wxFileOutputStream::m_file = wxFileInputStream::m_file;
+    wxFileOutputStream::m_file =
+    wxFileInputStream::m_file = new wxFile(fileName, wxFile::read_write);
+
+    // this is a bit ugly as streams are symmetric but we still have to delete
+    // the file we created above exactly once so we decide to (arbitrarily) do
+    // it in wxFileInputStream
+    wxFileInputStream::m_file_destroy = true;
 }
 
-#endif //wxUSE_FILE
+bool wxFileStream::IsOk() const
+{
+    return wxFileOutputStream::IsOk() && wxFileInputStream::IsOk();
+}
+
+#endif // wxUSE_FILE
 
 #if wxUSE_FFILE
 
@@ -224,7 +246,7 @@ wxFileStream::wxFileStream(const wxString& fileName)
 // ----------------------------------------------------------------------------
 
 wxFFileInputStream::wxFFileInputStream(const wxString& fileName,
-                                       const wxChar *mode)
+                                       const wxString& mode)
                   : wxInputStream()
 {
     m_file = new wxFFile(fileName, mode);
@@ -290,12 +312,17 @@ wxFileOffset wxFFileInputStream::OnSysTell() const
     return m_file->Tell();
 }
 
+bool wxFFileInputStream::IsOk() const
+{
+    return wxStreamBase::IsOk() && m_file->IsOpened();
+}
+
 // ----------------------------------------------------------------------------
 // wxFFileOutputStream
 // ----------------------------------------------------------------------------
 
 wxFFileOutputStream::wxFFileOutputStream(const wxString& fileName,
-                                         const wxChar *mode)
+                                         const wxString& mode)
 {
     m_file = new wxFFile(fileName, mode);
     m_file_destroy = true;
@@ -371,17 +398,34 @@ wxFileOffset wxFFileOutputStream::GetLength() const
     return m_file->Length();
 }
 
+bool wxFFileOutputStream::IsOk() const
+{
+    return wxStreamBase::IsOk() && m_file->IsOpened();
+}
+
 // ----------------------------------------------------------------------------
 // wxFFileStream
 // ----------------------------------------------------------------------------
 
-wxFFileStream::wxFFileStream(const wxString& fileName)
-             : wxFFileInputStream(fileName)
+wxFFileStream::wxFFileStream(const wxString& fileName, const wxString& mode)
+             : wxFFileInputStream(),
+               wxFFileOutputStream()
 {
-    wxFFileOutputStream::m_file = wxFFileInputStream::m_file;
+    wxASSERT_MSG( mode.find_first_of('+') != wxString::npos,
+                  "must be opened in read-write mode for this class to work" );
+
+    wxFFileOutputStream::m_file =
+    wxFFileInputStream::m_file = new wxFFile(fileName, mode);
+
+    // see comment in wxFileStream ctor
+    wxFFileInputStream::m_file_destroy = true;
+}
+
+bool wxFFileStream::IsOk() const
+{
+    return wxFFileOutputStream::IsOk() && wxFFileInputStream::IsOk();
 }
 
 #endif //wxUSE_FFILE
 
 #endif // wxUSE_STREAMS
-