Make code reading BMP files more robust.

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

diff --git a/src/common/datstrm.cpp b/src/common/datstrm.cpp
index 771d9c32d2cb0b637b93e83179ba3268ad745bd0..c55f2134fbc9b703f3b5df0df9ffe2334d7a79aa 100644 (file)
--- a/src/common/datstrm.cpp
+++ b/src/common/datstrm.cpp
@@ -1,18 +1,14 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

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

 // Purpose:     Data stream classes
 // Author:      Guilhem Lavaux
 // Purpose:     Data stream classes
 // Author:      Guilhem Lavaux

-// Modified by:
+// Modified by: Mickael Gilabert

 // Created:     28/06/98
 // RCS-ID:      $Id$
 // Created:     28/06/98
 // RCS-ID:      $Id$

-// Copyright:   (c) Guilhem Lavaux 
-// Licence:    wxWindows license
+// Copyright:   (c) Guilhem Lavaux
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "datstrm.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"
 


@@ -24,142 +20,833 @@
 
 #include "wx/datstrm.h"
 
 
 #include "wx/datstrm.h"
 

+#ifndef WX_PRECOMP
+    #include "wx/math.h"
+#endif //WX_PRECOMP
+
+namespace
+{
+
+// helper unions used to swap bytes of floats and doubles
+union Float32Data
+{
+    wxFloat32 f;
+    wxUint32 i;
+};
+
+union Float64Data
+{
+    wxFloat64 f;
+    wxUint32 i[2];
+};
+
+} // anonymous namespace
+
+// ----------------------------------------------------------------------------
+// wxDataStreamBase
+// ----------------------------------------------------------------------------
+
+wxDataStreamBase::wxDataStreamBase(const wxMBConv& conv)
+#if wxUSE_UNICODE
+    : m_conv(conv.Clone())
+#endif // wxUSE_UNICODE
+{
+    // It is unused in non-Unicode build, so suppress a warning there.
+    wxUnusedVar(conv);
+
+    m_be_order = false;
+
+    // For compatibility with the existing data files, we use extended
+    // precision if it is available, i.e. if wxUSE_APPLE_IEEE is on.
+#if wxUSE_APPLE_IEEE
+    m_useExtendedPrecision = true;
+#endif // wxUSE_APPLE_IEEE
+}
+
+#if wxUSE_UNICODE
+void wxDataStreamBase::SetConv( const wxMBConv &conv )
+{
+    delete m_conv;
+    m_conv = conv.Clone();
+}
+#endif
+
+wxDataStreamBase::~wxDataStreamBase()
+{
+#if wxUSE_UNICODE
+    delete m_conv;
+#endif // wxUSE_UNICODE
+}
+

 // ---------------------------------------------------------------------------
 // wxDataInputStream
 // ---------------------------------------------------------------------------
 
 // ---------------------------------------------------------------------------
 // wxDataInputStream
 // ---------------------------------------------------------------------------
 

-wxDataInputStream::wxDataInputStream(wxInputStream& s)
-  : wxFilterInputStream(s)
+wxDataInputStream::wxDataInputStream(wxInputStream& s, const wxMBConv& conv)
+  : wxDataStreamBase(conv),
+    m_input(&s)

 {
 }
 
 {
 }
 

-wxDataInputStream::~wxDataInputStream()
+#if wxHAS_INT64
+wxUint64 wxDataInputStream::Read64()

 {
 {

+  wxUint64 tmp;
+  Read64(&tmp, 1);
+  return tmp;

 }
 }

+#endif // wxHAS_INT64

 
 wxUint32 wxDataInputStream::Read32()
 {
 
 wxUint32 wxDataInputStream::Read32()
 {

-  char buf[4];
+  wxUint32 i32;

 
 

-  Read(buf, 4);
+  m_input->Read(&i32, 4);

 
 

-  return (wxUint32)buf[0] |
-         ((wxUint32)buf[1] << 8) |
-         ((wxUint32)buf[2] << 16) |
-         ((wxUint32)buf[3] << 24);
+  if (m_be_order)
+    return wxUINT32_SWAP_ON_LE(i32);
+  else
+    return wxUINT32_SWAP_ON_BE(i32);

 }
 
 wxUint16 wxDataInputStream::Read16()
 {
 }
 
 wxUint16 wxDataInputStream::Read16()
 {

-  char buf[2];
+  wxUint16 i16;

 
 

-  Read(buf, 2);
+  m_input->Read(&i16, 2);

 
 

-  return (wxUint16)buf[0] |
-         ((wxUint16)buf[1] << 8);
+  if (m_be_order)
+    return wxUINT16_SWAP_ON_LE(i16);
+  else
+    return wxUINT16_SWAP_ON_BE(i16);

 }
 
 wxUint8 wxDataInputStream::Read8()
 {
   wxUint8 buf;
 
 }
 
 wxUint8 wxDataInputStream::Read8()
 {
   wxUint8 buf;
 

-  Read((char *)&buf, 1);
+  m_input->Read(&buf, 1);

   return (wxUint8)buf;
 }
 
   return (wxUint8)buf;
 }
 

-// Must be at global scope for VC++ 5
-extern "C" double ConvertFromIeeeExtended(const unsigned char *bytes);
-

 double wxDataInputStream::ReadDouble()
 {
 #if wxUSE_APPLE_IEEE
 double wxDataInputStream::ReadDouble()
 {
 #if wxUSE_APPLE_IEEE

-  char buf[10];
+    if ( m_useExtendedPrecision )
+    {
+        char buf[10];
+
+        m_input->Read(buf, 10);
+        return wxConvertFromIeeeExtended((const wxInt8 *)buf);
+    }
+    else
+#endif // wxUSE_APPLE_IEEE
+    {
+        Float64Data floatData;
+
+        if ( m_be_order == (wxBYTE_ORDER == wxBIG_ENDIAN) )
+        {
+            floatData.i[0] = Read32();
+            floatData.i[1] = Read32();
+        }
+        else
+        {
+            floatData.i[1] = Read32();
+            floatData.i[0] = Read32();
+        }
+
+        return static_cast<double>(floatData.f);
+    }
+}
+
+float wxDataInputStream::ReadFloat()
+{
+#if wxUSE_APPLE_IEEE
+    if ( m_useExtendedPrecision )
+    {
+        return (float)ReadDouble();
+    }
+    else
+#endif // wxUSE_APPLE_IEEE
+    {
+        Float32Data floatData;
+
+        floatData.i = Read32();
+        return static_cast<float>(floatData.f);
+    }
+}

 
 

-  Read(buf, 10);
-  return ConvertFromIeeeExtended((unsigned char *)buf);
+wxString wxDataInputStream::ReadString()
+{
+    wxString ret;
+
+    const size_t len = Read32();
+    if ( len > 0 )
+    {
+#if wxUSE_UNICODE
+        wxCharBuffer tmp(len);
+        if ( tmp )
+        {
+            m_input->Read(tmp.data(), len);
+            ret = m_conv->cMB2WX(tmp.data());
+        }

 #else
 #else

-  return 0.0;
+        wxStringBuffer buf(ret, len);
+        if ( buf )
+            m_input->Read(buf, len);

 #endif
 #endif

+    }
+
+    return ret;

 }
 
 }
 

-wxString wxDataInputStream::ReadString()
+#if wxUSE_LONGLONG
+
+template <class T>
+static
+void DoReadLL(T *buffer, size_t size, wxInputStream *input, bool be_order)

 {
 {

-  wxString wx_string;
-  char *string;
-  unsigned long len;
+    typedef T DataType;
+    unsigned char *pchBuffer = new unsigned char[size * 8];
+    // TODO: Check for overflow when size is of type uint and is > than 512m
+    input->Read(pchBuffer, size * 8);
+    size_t idx_base = 0;
+    if ( be_order )
+    {
+        for ( size_t uiIndex = 0; uiIndex != size; ++uiIndex )
+        {
+            buffer[uiIndex] = 0l;
+            for ( unsigned ui = 0; ui != 8; ++ui )
+            {
+                buffer[uiIndex] = buffer[uiIndex] * 256l +
+                            DataType((unsigned long) pchBuffer[idx_base + ui]);
+            }
+
+            idx_base += 8;
+        }
+    }
+    else // little endian
+    {
+        for ( size_t uiIndex=0; uiIndex!=size; ++uiIndex )
+        {
+            buffer[uiIndex] = 0l;
+            for ( unsigned ui=0; ui!=8; ++ui )
+                buffer[uiIndex] = buffer[uiIndex] * 256l +
+                    DataType((unsigned long) pchBuffer[idx_base + 7 - ui]);
+            idx_base += 8;
+        }
+    }
+    delete[] pchBuffer;
+}

 
 

-  len = Read32();
-  string = new char[len+1];
+template <class T>
+static void DoWriteLL(const T *buffer, size_t size, wxOutputStream *output, bool be_order)
+{
+    typedef T DataType;
+    unsigned char *pchBuffer = new unsigned char[size * 8];
+    size_t idx_base = 0;
+    if ( be_order )
+    {
+        for ( size_t uiIndex = 0; uiIndex != size; ++uiIndex )
+        {
+            DataType i64 = buffer[uiIndex];
+            for ( unsigned ui = 0; ui != 8; ++ui )
+            {
+                pchBuffer[idx_base + 7 - ui] =
+                    (unsigned char) (i64.GetLo() & 255l);
+                i64 >>= 8l;
+            }
+
+            idx_base += 8;
+        }
+    }
+    else // little endian
+    {
+        for ( size_t uiIndex=0; uiIndex != size; ++uiIndex )
+        {
+            DataType i64 = buffer[uiIndex];
+            for (unsigned ui=0; ui!=8; ++ui)
+            {
+                pchBuffer[idx_base + ui] =
+                    (unsigned char) (i64.GetLo() & 255l);
+                i64 >>= 8l;
+            }
+
+            idx_base += 8;
+        }
+    }
+
+    // TODO: Check for overflow when size is of type uint and is > than 512m
+    output->Write(pchBuffer, size * 8);
+    delete[] pchBuffer;
+}

 
 

-  Read(string, len);
+#endif // wxUSE_LONGLONG

 
 

-  string[len] = 0;
-  wx_string = string;
-  delete string;
+#ifdef wxLongLong_t
+
+template <class T>
+static
+void DoReadI64(T *buffer, size_t size, wxInputStream *input, bool be_order)
+{
+    typedef T DataType;
+    unsigned char *pchBuffer = (unsigned char*) buffer;
+    // TODO: Check for overflow when size is of type uint and is > than 512m
+    input->Read(pchBuffer, size * 8);
+    if ( be_order )
+    {
+        for ( wxUint32 i = 0; i < size; i++ )
+        {
+            DataType v = wxUINT64_SWAP_ON_LE(*buffer);
+            *(buffer++) = v;
+        }
+    }
+    else // little endian
+    {
+        for ( wxUint32 i=0; i<size; i++ )
+        {
+            DataType v = wxUINT64_SWAP_ON_BE(*buffer);
+            *(buffer++) = v;
+        }
+    }
+}

 
 

-  return wx_string;
+template <class T>
+static
+void DoWriteI64(const T *buffer, size_t size, wxOutputStream *output, bool be_order)
+{
+  typedef T DataType;
+  if ( be_order )
+  {
+    for ( size_t i = 0; i < size; i++ )
+    {
+      DataType i64 = wxUINT64_SWAP_ON_LE(*buffer);
+      buffer++;
+      output->Write(&i64, 8);
+    }
+  }
+  else // little endian
+  {
+    for ( size_t i=0; i < size; i++ )
+    {
+      DataType i64 = wxUINT64_SWAP_ON_BE(*buffer);
+      buffer++;
+      output->Write(&i64, 8);
+    }
+  }
+}
+
+#endif // wxLongLong_t
+
+
+#if wxHAS_INT64
+void wxDataInputStream::Read64(wxUint64 *buffer, size_t size)
+{
+#ifndef wxLongLong_t
+    DoReadLL(buffer, size, m_input, m_be_order);
+#else
+    DoReadI64(buffer, size, m_input, m_be_order);
+#endif
+}
+
+void wxDataInputStream::Read64(wxInt64 *buffer, size_t size)
+{
+#ifndef wxLongLong_t
+    DoReadLL(buffer, size, m_input, m_be_order);
+#else
+    DoReadI64(buffer, size, m_input, m_be_order);
+#endif
+}
+#endif // wxHAS_INT64
+
+#if defined(wxLongLong_t) && wxUSE_LONGLONG
+void wxDataInputStream::Read64(wxULongLong *buffer, size_t size)
+{
+    DoReadLL(buffer, size, m_input, m_be_order);
+}
+
+void wxDataInputStream::Read64(wxLongLong *buffer, size_t size)
+{
+    DoReadLL(buffer, size, m_input, m_be_order);
+}
+#endif // wxLongLong_t
+
+#if wxUSE_LONGLONG
+void wxDataInputStream::ReadLL(wxULongLong *buffer, size_t size)
+{
+    DoReadLL(buffer, size, m_input, m_be_order);
+}
+
+void wxDataInputStream::ReadLL(wxLongLong *buffer, size_t size)
+{
+    DoReadLL(buffer, size, m_input, m_be_order);
+}
+
+wxLongLong wxDataInputStream::ReadLL(void)
+{
+    wxLongLong ll;
+    DoReadLL(&ll, (size_t)1, m_input, m_be_order);
+    return ll;
+}
+#endif // wxUSE_LONGLONG
+
+void wxDataInputStream::Read32(wxUint32 *buffer, size_t size)
+{
+    m_input->Read(buffer, size * 4);
+
+    if (m_be_order)
+    {
+        for (wxUint32 i=0; i<size; i++)
+        {
+            wxUint32 v = wxUINT32_SWAP_ON_LE(*buffer);
+            *(buffer++) = v;
+        }
+    }
+    else
+    {
+        for (wxUint32 i=0; i<size; i++)
+        {
+            wxUint32 v = wxUINT32_SWAP_ON_BE(*buffer);
+            *(buffer++) = v;
+        }
+    }
+}
+
+void wxDataInputStream::Read16(wxUint16 *buffer, size_t size)
+{
+  m_input->Read(buffer, size * 2);
+
+  if (m_be_order)
+  {
+    for (wxUint32 i=0; i<size; i++)
+    {
+      wxUint16 v = wxUINT16_SWAP_ON_LE(*buffer);
+      *(buffer++) = v;
+    }
+  }
+  else
+  {
+    for (wxUint32 i=0; i<size; i++)
+    {
+      wxUint16 v = wxUINT16_SWAP_ON_BE(*buffer);
+      *(buffer++) = v;
+    }
+  }
+}
+
+void wxDataInputStream::Read8(wxUint8 *buffer, size_t size)
+{
+  m_input->Read(buffer, size);
+}
+
+void wxDataInputStream::ReadDouble(double *buffer, size_t size)
+{
+  for (wxUint32 i=0; i<size; i++)
+  {
+    *(buffer++) = ReadDouble();
+  }
+}
+
+void wxDataInputStream::ReadFloat(float *buffer, size_t size)
+{
+  for (wxUint32 i=0; i<size; i++)
+  {
+    *(buffer++) = ReadFloat();
+  }
+}
+
+wxDataInputStream& wxDataInputStream::operator>>(wxString& s)
+{
+  s = ReadString();
+  return *this;
+}
+
+wxDataInputStream& wxDataInputStream::operator>>(wxInt8& c)
+{
+  c = (wxInt8)Read8();
+  return *this;
+}
+
+wxDataInputStream& wxDataInputStream::operator>>(wxInt16& i)
+{
+  i = (wxInt16)Read16();
+  return *this;
+}
+
+wxDataInputStream& wxDataInputStream::operator>>(wxInt32& i)
+{
+  i = (wxInt32)Read32();
+  return *this;
+}
+
+wxDataInputStream& wxDataInputStream::operator>>(wxUint8& c)
+{
+  c = Read8();
+  return *this;
+}
+
+wxDataInputStream& wxDataInputStream::operator>>(wxUint16& i)
+{
+  i = Read16();
+  return *this;
+}
+
+wxDataInputStream& wxDataInputStream::operator>>(wxUint32& i)
+{
+  i = Read32();
+  return *this;
+}
+
+#if wxHAS_INT64
+wxDataInputStream& wxDataInputStream::operator>>(wxUint64& i)
+{
+  i = Read64();
+  return *this;
+}
+
+wxDataInputStream& wxDataInputStream::operator>>(wxInt64& i)
+{
+  i = Read64();
+  return *this;
+}
+#endif // wxHAS_INT64
+
+#if defined(wxLongLong_t) && wxUSE_LONGLONG
+wxDataInputStream& wxDataInputStream::operator>>(wxULongLong& i)
+{
+  i = ReadLL();
+  return *this;
+}
+
+wxDataInputStream& wxDataInputStream::operator>>(wxLongLong& i)
+{
+  i = ReadLL();
+  return *this;
+}
+#endif // wxLongLong_t
+
+wxDataInputStream& wxDataInputStream::operator>>(double& d)
+{
+  d = ReadDouble();
+  return *this;
+}
+
+wxDataInputStream& wxDataInputStream::operator>>(float& f)
+{
+  f = ReadFloat();
+  return *this;

 }
 
 // ---------------------------------------------------------------------------
 // wxDataOutputStream
 // ---------------------------------------------------------------------------
 
 }
 
 // ---------------------------------------------------------------------------
 // wxDataOutputStream
 // ---------------------------------------------------------------------------
 

-wxDataOutputStream::wxDataOutputStream(wxOutputStream& s)
- : wxFilterOutputStream(s)
+wxDataOutputStream::wxDataOutputStream(wxOutputStream& s, const wxMBConv& conv)
+  : wxDataStreamBase(conv),
+    m_output(&s)

 {
 }
 
 {
 }
 

-wxDataOutputStream::~wxDataOutputStream()
+#if wxHAS_INT64
+void wxDataOutputStream::Write64(wxUint64 i)

 {
 {

+  Write64(&i, 1);

 }
 
 }
 

+void wxDataOutputStream::Write64(wxInt64 i)
+{
+  Write64(&i, 1);
+}
+#endif // wxHAS_INT64
+

 void wxDataOutputStream::Write32(wxUint32 i)
 {
 void wxDataOutputStream::Write32(wxUint32 i)
 {

-  char buf[4];
+  wxUint32 i32;

 
 

-  buf[0] = i & 0xff;
-  buf[1] = (i >> 8) & 0xff;
-  buf[2] = (i >> 16) & 0xff;
-  buf[3] = (i >> 24) & 0xff;
-  Write(buf, 4);
+  if (m_be_order)
+    i32 = wxUINT32_SWAP_ON_LE(i);
+  else
+    i32 = wxUINT32_SWAP_ON_BE(i);
+  m_output->Write(&i32, 4);

 }
 
 void wxDataOutputStream::Write16(wxUint16 i)
 {
 }
 
 void wxDataOutputStream::Write16(wxUint16 i)
 {

-  char buf[2];
+  wxUint16 i16;
+
+  if (m_be_order)
+    i16 = wxUINT16_SWAP_ON_LE(i);
+  else
+    i16 = wxUINT16_SWAP_ON_BE(i);

 
 

-  buf[0] = i & 0xff;
-  buf[1] = (i >> 8) & 0xff;
-  Write(buf, 2);
+  m_output->Write(&i16, 2);

 }
 
 void wxDataOutputStream::Write8(wxUint8 i)
 {
 }
 
 void wxDataOutputStream::Write8(wxUint8 i)
 {

-  Write(&i, 1);
+  m_output->Write(&i, 1);

 }
 
 void wxDataOutputStream::WriteString(const wxString& string)
 {
 }
 
 void wxDataOutputStream::WriteString(const wxString& string)
 {

-  Write32(string.Length());
-  Write((const wxChar *) string, string.Length()*sizeof(wxChar));
+#if wxUSE_UNICODE
+  const wxWX2MBbuf buf = string.mb_str(*m_conv);
+#else
+  const wxWX2MBbuf buf = string.mb_str();
+#endif
+  size_t len = strlen(buf);
+  Write32(len);
+  if (len > 0)
+      m_output->Write(buf, len);

 }
 
 }
 

-// Must be at global scope for VC++ 5
-extern "C" void ConvertToIeeeExtended(double num, unsigned char *bytes);
-

 void wxDataOutputStream::WriteDouble(double d)
 {
 void wxDataOutputStream::WriteDouble(double d)
 {

-  char buf[10];
+#if wxUSE_APPLE_IEEE
+    if ( m_useExtendedPrecision )
+    {
+        char buf[10];
+
+        wxConvertToIeeeExtended(d, (wxInt8 *)buf);
+        m_output->Write(buf, 10);
+    }
+    else
+#endif // wxUSE_APPLE_IEEE
+    {
+        Float64Data floatData;
+
+        floatData.f = (wxFloat64)d;
+
+        if ( m_be_order == (wxBYTE_ORDER == wxBIG_ENDIAN) )
+        {
+            Write32(floatData.i[0]);
+            Write32(floatData.i[1]);
+        }
+        else
+        {
+            Write32(floatData.i[1]);
+            Write32(floatData.i[0]);
+        }
+    }
+}

 
 

+void wxDataOutputStream::WriteFloat(float f)
+{

 #if wxUSE_APPLE_IEEE
 #if wxUSE_APPLE_IEEE

-  ConvertToIeeeExtended(d, (unsigned char *)buf);
+    if ( m_useExtendedPrecision )
+    {
+        WriteDouble((double)f);
+    }
+    else
+#endif // wxUSE_APPLE_IEEE
+    {
+        Float32Data floatData;
+
+        floatData.f = (wxFloat32)f;
+        Write32(floatData.i);
+    }
+}
+
+#if wxHAS_INT64
+void wxDataOutputStream::Write64(const wxUint64 *buffer, size_t size)
+{
+#ifndef wxLongLong_t
+    DoWriteLL(buffer, size, m_output, m_be_order);
+#else
+    DoWriteI64(buffer, size, m_output, m_be_order);
+#endif
+}
+
+void wxDataOutputStream::Write64(const wxInt64 *buffer, size_t size)
+{
+#ifndef wxLongLong_t
+    DoWriteLL(buffer, size, m_output, m_be_order);

 #else
 #else

-#  pragma warning "wxDataOutputStream::WriteDouble() not using IeeeExtended - will not work!"
- buf[0] = '\0';
+    DoWriteI64(buffer, size, m_output, m_be_order);

 #endif
 #endif

-  Write(buf, 10);
+}
+#endif // wxHAS_INT64
+
+#if defined(wxLongLong_t) && wxUSE_LONGLONG
+void wxDataOutputStream::Write64(const wxULongLong *buffer, size_t size)
+{
+    DoWriteLL(buffer, size, m_output, m_be_order);
+}
+
+void wxDataOutputStream::Write64(const wxLongLong *buffer, size_t size)
+{
+    DoWriteLL(buffer, size, m_output, m_be_order);
+}
+#endif // wxLongLong_t
+
+#if wxUSE_LONGLONG
+void wxDataOutputStream::WriteLL(const wxULongLong *buffer, size_t size)
+{
+    DoWriteLL(buffer, size, m_output, m_be_order);
+}
+
+void wxDataOutputStream::WriteLL(const wxLongLong *buffer, size_t size)
+{
+    DoWriteLL(buffer, size, m_output, m_be_order);
+}
+
+void wxDataOutputStream::WriteLL(const wxLongLong &ll)
+{
+    WriteLL(&ll, 1);
+}
+
+void wxDataOutputStream::WriteLL(const wxULongLong &ll)
+{
+    WriteLL(&ll, 1);
+}
+#endif // wxUSE_LONGLONG
+
+void wxDataOutputStream::Write32(const wxUint32 *buffer, size_t size)
+{
+  if (m_be_order)
+  {
+    for (wxUint32 i=0; i<size ;i++)
+    {
+      wxUint32 i32 = wxUINT32_SWAP_ON_LE(*buffer);
+      buffer++;
+      m_output->Write(&i32, 4);
+    }
+  }
+  else
+  {
+    for (wxUint32 i=0; i<size ;i++)
+    {
+      wxUint32 i32 = wxUINT32_SWAP_ON_BE(*buffer);
+      buffer++;
+      m_output->Write(&i32, 4);
+    }
+  }
+}
+
+void wxDataOutputStream::Write16(const wxUint16 *buffer, size_t size)
+{
+  if (m_be_order)
+  {
+    for (wxUint32 i=0; i<size ;i++)
+    {
+      wxUint16 i16 = wxUINT16_SWAP_ON_LE(*buffer);
+      buffer++;
+      m_output->Write(&i16, 2);
+    }
+  }
+  else
+  {
+    for (wxUint32 i=0; i<size ;i++)
+    {
+      wxUint16 i16 = wxUINT16_SWAP_ON_BE(*buffer);
+      buffer++;
+      m_output->Write(&i16, 2);
+    }
+  }
+}
+
+void wxDataOutputStream::Write8(const wxUint8 *buffer, size_t size)
+{
+  m_output->Write(buffer, size);
+}
+
+void wxDataOutputStream::WriteDouble(const double *buffer, size_t size)
+{
+  for (wxUint32 i=0; i<size; i++)
+  {
+    WriteDouble(*(buffer++));
+  }
+}
+
+void wxDataOutputStream::WriteFloat(const float *buffer, size_t size)
+{
+  for (wxUint32 i=0; i<size; i++)
+  {
+    WriteFloat(*(buffer++));
+  }
+}
+
+wxDataOutputStream& wxDataOutputStream::operator<<(const wxString& string)
+{
+  WriteString(string);
+  return *this;
+}
+
+wxDataOutputStream& wxDataOutputStream::operator<<(wxInt8 c)
+{
+  Write8((wxUint8)c);
+  return *this;
+}
+
+wxDataOutputStream& wxDataOutputStream::operator<<(wxInt16 i)
+{
+  Write16((wxUint16)i);
+  return *this;
+}
+
+wxDataOutputStream& wxDataOutputStream::operator<<(wxInt32 i)
+{
+  Write32((wxUint32)i);
+  return *this;
+}
+
+wxDataOutputStream& wxDataOutputStream::operator<<(wxUint8 c)
+{
+  Write8(c);
+  return *this;
+}
+
+wxDataOutputStream& wxDataOutputStream::operator<<(wxUint16 i)
+{
+  Write16(i);
+  return *this;
+}
+
+wxDataOutputStream& wxDataOutputStream::operator<<(wxUint32 i)
+{
+  Write32(i);
+  return *this;
+}
+
+#if wxHAS_INT64
+wxDataOutputStream& wxDataOutputStream::operator<<(wxUint64 i)
+{
+  Write64(i);
+  return *this;
+}
+
+wxDataOutputStream& wxDataOutputStream::operator<<(wxInt64 i)
+{
+  Write64(i);
+  return *this;
+}
+#endif // wxHAS_INT64
+
+#if defined(wxLongLong_t) && wxUSE_LONGLONG
+wxDataOutputStream& wxDataOutputStream::operator<<(const wxULongLong &i)
+{
+  WriteLL(i);
+  return *this;
+}
+
+wxDataOutputStream& wxDataOutputStream::operator<<(const wxLongLong &i)
+{
+  WriteLL(i);
+  return *this;
+}
+#endif // wxLongLong_t
+
+wxDataOutputStream& wxDataOutputStream::operator<<(double d)
+{
+  WriteDouble(d);
+  return *this;
+}
+
+wxDataOutputStream& wxDataOutputStream::operator<<(float f)
+{
+  WriteFloat(f);
+  return *this;

 }
 
 #endif
   // wxUSE_STREAMS
 }
 
 #endif
   // wxUSE_STREAMS

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