Ensure that the default wxWebView backends are registered.

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

diff --git a/src/common/wfstream.cpp b/src/common/wfstream.cpp
index 904a89809f83787474a730478bc0c41f6e1c0d71..1eca40cd08a51c5e993f2d36b5e0beca9350f435 100644 (file)
--- a/src/common/wfstream.cpp
+++ b/src/common/wfstream.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        fstream.cpp
+// Name:        src/common/wfstream.cpp

 // Purpose:     "File stream" classes
 // Author:      Julian Smart
 // Modified by:
 // Purpose:     "File stream" classes
 // Author:      Julian Smart
 // Modified by:


@@ -9,23 +9,25 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // 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__
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__

-  #pragma hdrstop
+    #pragma hdrstop

 #endif
 
 #endif
 

-#if wxUSE_STREAMS && wxUSE_FILE
+#if wxUSE_STREAMS

 
 

-#include <stdio.h>
-#include "wx/stream.h"

 #include "wx/wfstream.h"
 
 #include "wx/wfstream.h"
 

+#ifndef WX_PRECOMP
+    #include "wx/stream.h"
+#endif
+
+#include <stdio.h>
+
+#if wxUSE_FILE
+

 // ----------------------------------------------------------------------------
 // wxFileInputStream
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxFileInputStream
 // ----------------------------------------------------------------------------


@@ -35,6 +37,8 @@ wxFileInputStream::wxFileInputStream(const wxString& fileName)
 {
     m_file = new wxFile(fileName, wxFile::read);
     m_file_destroy = true;
 {
     m_file = new wxFile(fileName, wxFile::read);
     m_file_destroy = true;

+    if ( !m_file->IsOpened() )
+        m_lasterror = wxSTREAM_READ_ERROR;

 }
 
 wxFileInputStream::wxFileInputStream()
 }
 
 wxFileInputStream::wxFileInputStream()


@@ -62,17 +66,17 @@ wxFileInputStream::~wxFileInputStream()
         delete m_file;
 }
 
         delete m_file;
 }
 

-size_t wxFileInputStream::GetSize() const
+wxFileOffset wxFileInputStream::GetLength() const

 {
     return m_file->Length();
 }
 
 size_t wxFileInputStream::OnSysRead(void *buffer, size_t size)
 {
 {
     return m_file->Length();
 }
 
 size_t wxFileInputStream::OnSysRead(void *buffer, size_t size)
 {

-    wxFileOffset ret = m_file->Read(buffer, size);
+    ssize_t ret = m_file->Read(buffer, size);

 
     // NB: we can't use a switch here because HP-UX CC doesn't allow
 
     // NB: we can't use a switch here because HP-UX CC doesn't allow

-    //     switching over long long (which off_t is in 64bit mode)
+    //     switching over long long (which size_t is in 64bit mode)

 
     if ( !ret )
     {
 
     if ( !ret )
     {


@@ -103,6 +107,11 @@ wxFileOffset wxFileInputStream::OnSysTell() const
     return m_file->Tell();
 }
 
     return m_file->Tell();
 }
 

+bool wxFileInputStream::IsOk() const
+{
+    return wxInputStream::IsOk() && m_file->IsOpened();
+}
+

 // ----------------------------------------------------------------------------
 // wxFileOutputStream
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxFileOutputStream
 // ----------------------------------------------------------------------------


@@ -113,14 +122,7 @@ wxFileOutputStream::wxFileOutputStream(const wxString& fileName)
     m_file_destroy = true;
 
     if (!m_file->IsOpened())
     m_file_destroy = true;
 
     if (!m_file->IsOpened())

-    {

         m_lasterror = wxSTREAM_WRITE_ERROR;
         m_lasterror = wxSTREAM_WRITE_ERROR;

-    }
-    else
-    {
-        if (m_file->Error())
-            m_lasterror = wxSTREAM_WRITE_ERROR;
-    }

 }
 
 wxFileOutputStream::wxFileOutputStream(wxFile& file)
 }
 
 wxFileOutputStream::wxFileOutputStream(wxFile& file)


@@ -176,37 +178,89 @@ void wxFileOutputStream::Sync()
     m_file->Flush();
 }
 
     m_file->Flush();
 }
 

-size_t wxFileOutputStream::GetSize() const
+wxFileOffset wxFileOutputStream::GetLength() const

 {
     return m_file->Length();
 }
 
 {
     return m_file->Length();
 }
 

+bool wxFileOutputStream::IsOk() const
+{
+    return wxOutputStream::IsOk() && m_file->IsOpened();
+}
+
+// ----------------------------------------------------------------------------
+// wxTempFileOutputStream
+// ----------------------------------------------------------------------------
+
+wxTempFileOutputStream::wxTempFileOutputStream(const wxString& fileName)
+{
+    m_file = new wxTempFile(fileName);
+
+    if (!m_file->IsOpened())
+        m_lasterror = wxSTREAM_WRITE_ERROR;
+}
+
+wxTempFileOutputStream::~wxTempFileOutputStream()
+{
+    if (m_file->IsOpened())
+        Discard();
+    delete m_file;
+}
+
+size_t wxTempFileOutputStream::OnSysWrite(const void *buffer, size_t size)
+{
+    if (IsOk() && m_file->Write(buffer, size))
+        return size;
+    m_lasterror = wxSTREAM_WRITE_ERROR;
+    return 0;
+}
+

 // ----------------------------------------------------------------------------
 // wxFileStream
 // ----------------------------------------------------------------------------
 
 wxFileStream::wxFileStream(const wxString& fileName)
 // ----------------------------------------------------------------------------
 // wxFileStream
 // ----------------------------------------------------------------------------
 
 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;

 }
 
 }
 

+bool wxFileStream::IsOk() const
+{
+    return wxFileOutputStream::IsOk() && wxFileInputStream::IsOk();
+}
+
+#endif // wxUSE_FILE
+
+#if wxUSE_FFILE
+

 // ----------------------------------------------------------------------------
 // wxFFileInputStream
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 // wxFFileInputStream
 // ----------------------------------------------------------------------------
 

-wxFFileInputStream::wxFFileInputStream(const wxString& fileName)
-  : wxInputStream()
+wxFFileInputStream::wxFFileInputStream(const wxString& fileName,
+                                       const wxString& mode)
+                  : wxInputStream()

 {
 {

-    m_file = new wxFFile(fileName, _T("rb"));
+    m_file = new wxFFile(fileName, mode);

     m_file_destroy = true;
     m_file_destroy = true;

+
+    if (!m_file->IsOpened())
+        m_lasterror = wxSTREAM_WRITE_ERROR;

 }
 
 wxFFileInputStream::wxFFileInputStream()
 }
 
 wxFFileInputStream::wxFFileInputStream()

-  : wxInputStream()
+                  : wxInputStream()

 {
 {

-    m_file_destroy = false;

     m_file = NULL;
     m_file = NULL;

+    m_file_destroy = false;

 }
 
 wxFFileInputStream::wxFFileInputStream(wxFFile& file)
 }
 
 wxFFileInputStream::wxFFileInputStream(wxFFile& file)


@@ -227,18 +281,17 @@ wxFFileInputStream::~wxFFileInputStream()
         delete m_file;
 }
 
         delete m_file;
 }
 

-size_t wxFFileInputStream::GetSize() const
+wxFileOffset wxFFileInputStream::GetLength() const

 {
     return m_file->Length();
 }
 
 size_t wxFFileInputStream::OnSysRead(void *buffer, size_t size)
 {
 {
     return m_file->Length();
 }
 
 size_t wxFFileInputStream::OnSysRead(void *buffer, size_t size)
 {

-    wxFileOffset ret;
+    ssize_t ret = m_file->Read(buffer, size);

 
 

-    ret = m_file->Read(buffer, size);
-
-    if (m_file->Eof())
+    // It is not safe to call Eof() if the file is not opened.
+    if (!m_file->IsOpened() || m_file->Eof())

         m_lasterror = wxSTREAM_EOF;
     if (ret == wxInvalidOffset)
     {
         m_lasterror = wxSTREAM_EOF;
     if (ret == wxInvalidOffset)
     {


@@ -251,13 +304,7 @@ size_t wxFFileInputStream::OnSysRead(void *buffer, size_t size)
 
 wxFileOffset wxFFileInputStream::OnSysSeek(wxFileOffset pos, wxSeekMode mode)
 {
 
 wxFileOffset wxFFileInputStream::OnSysSeek(wxFileOffset pos, wxSeekMode mode)
 {

-#ifdef __VMS
-#pragma message disable intsignchange
-#endif
-   return ( m_file->Seek(pos, mode) ? m_file->Tell() : wxInvalidOffset );
-#ifdef __VMS
-#pragma message enable intsignchange
-#endif
+    return m_file->Seek(pos, mode) ? m_file->Tell() : wxInvalidOffset;

 }
 
 wxFileOffset wxFFileInputStream::OnSysTell() const
 }
 
 wxFileOffset wxFFileInputStream::OnSysTell() const


@@ -265,13 +312,19 @@ wxFileOffset wxFFileInputStream::OnSysTell() const
     return m_file->Tell();
 }
 
     return m_file->Tell();
 }
 

+bool wxFFileInputStream::IsOk() const
+{
+    return wxStreamBase::IsOk() && m_file->IsOpened();
+}
+

 // ----------------------------------------------------------------------------
 // wxFFileOutputStream
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 // wxFFileOutputStream
 // ----------------------------------------------------------------------------
 

-wxFFileOutputStream::wxFFileOutputStream(const wxString& fileName)
+wxFFileOutputStream::wxFFileOutputStream(const wxString& fileName,
+                                         const wxString& mode)

 {
 {

-    m_file = new wxFFile(fileName, _T("w+b"));
+    m_file = new wxFFile(fileName, mode);

     m_file_destroy = true;
 
     if (!m_file->IsOpened())
     m_file_destroy = true;
 
     if (!m_file->IsOpened())


@@ -292,10 +345,10 @@ wxFFileOutputStream::wxFFileOutputStream(wxFFile& file)
 }
 
 wxFFileOutputStream::wxFFileOutputStream()
 }
 
 wxFFileOutputStream::wxFFileOutputStream()

-  : wxOutputStream()
+                   : wxOutputStream()

 {
 {

-    m_file_destroy = false;

     m_file = NULL;
     m_file = NULL;

+    m_file_destroy = false;

 }
 
 wxFFileOutputStream::wxFFileOutputStream(FILE *file)
 }
 
 wxFFileOutputStream::wxFFileOutputStream(FILE *file)


@@ -316,7 +369,8 @@ wxFFileOutputStream::~wxFFileOutputStream()
 size_t wxFFileOutputStream::OnSysWrite(const void *buffer, size_t size)
 {
     size_t ret = m_file->Write(buffer, size);
 size_t wxFFileOutputStream::OnSysWrite(const void *buffer, size_t size)
 {
     size_t ret = m_file->Write(buffer, size);

-    if (m_file->Error())
+    // It is not safe to call Error() if the file is not opened.
+    if (!m_file->IsOpened() || m_file->Error())

         m_lasterror = wxSTREAM_WRITE_ERROR;
     else
         m_lasterror = wxSTREAM_NO_ERROR;
         m_lasterror = wxSTREAM_WRITE_ERROR;
     else
         m_lasterror = wxSTREAM_NO_ERROR;


@@ -330,13 +384,7 @@ wxFileOffset wxFFileOutputStream::OnSysTell() const
 
 wxFileOffset wxFFileOutputStream::OnSysSeek(wxFileOffset pos, wxSeekMode mode)
 {
 
 wxFileOffset wxFFileOutputStream::OnSysSeek(wxFileOffset pos, wxSeekMode mode)
 {

-#ifdef __VMS
-#pragma message disable intsignchange
-#endif
-    return ( m_file->Seek(pos, mode) ? m_file->Tell() : wxInvalidOffset );
-#ifdef __VMS
-#pragma message enable intsignchange
-#endif
+    return m_file->Seek(pos, mode) ? m_file->Tell() : wxInvalidOffset;

 }
 
 void wxFFileOutputStream::Sync()
 }
 
 void wxFFileOutputStream::Sync()


@@ -345,21 +393,39 @@ void wxFFileOutputStream::Sync()
     m_file->Flush();
 }
 
     m_file->Flush();
 }
 

-size_t wxFFileOutputStream::GetSize() const
+wxFileOffset wxFFileOutputStream::GetLength() const

 {
     return m_file->Length();
 }
 
 {
     return m_file->Length();
 }
 

+bool wxFFileOutputStream::IsOk() const
+{
+    return wxStreamBase::IsOk() && m_file->IsOpened();
+}
+

 // ----------------------------------------------------------------------------
 // wxFFileStream
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 // wxFFileStream
 // ----------------------------------------------------------------------------
 

-wxFFileStream::wxFFileStream(const wxString& fileName)
-             : wxFFileInputStream(fileName)
+wxFFileStream::wxFFileStream(const wxString& fileName, const wxString& mode)
+             : wxFFileInputStream(),
+               wxFFileOutputStream()
+{
+    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

 {
 {

-    wxFFileOutputStream::m_file = wxFFileInputStream::m_file;
+    return wxFFileOutputStream::IsOk() && wxFFileInputStream::IsOk();

 }
 
 }
 

-#endif
-  // wxUSE_STREAMS && wxUSE_FILE
+#endif //wxUSE_FFILE

 
 

+#endif // wxUSE_STREAMS