X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c980c992630e94e71139660631a77ffbca8ed958..10992a81d39da31b79063387b7b71c0ff68737ce:/src/common/mstream.cpp

diff --git a/src/common/mstream.cpp b/src/common/mstream.cpp
index 4555d35062..b0f1ab6a1a 100644
--- a/src/common/mstream.cpp
+++ b/src/common/mstream.cpp
@@ -23,8 +23,8 @@
 #if wxUSE_STREAMS
 
 #include <stdlib.h>
-#include <wx/stream.h>
-#include <wx/mstream.h>
+#include "wx/stream.h"
+#include "wx/mstream.h"
 
 // ----------------------------------------------------------------------------
 // wxMemoryInputStream
@@ -51,9 +51,25 @@ char wxMemoryInputStream::Peek()
   return m_i_streambuf->GetBufferStart()[m_i_streambuf->GetIntPosition()];
 }
 
+bool wxMemoryInputStream::Eof() const
+{
+    return m_i_streambuf->GetBufferPos() == m_i_streambuf->GetBufferEnd();
+}
+
 size_t wxMemoryInputStream::OnSysRead(void *buffer, size_t nbytes)
 {
-  return m_i_streambuf->Read(buffer, nbytes);
+    size_t pos = m_i_streambuf->GetIntPosition();
+    if ( pos == m_length )
+    {
+        m_lasterror = wxSTREAM_EOF;
+
+        return 0;
+    }
+
+    m_i_streambuf->Read(buffer, nbytes);
+    m_lasterror = wxSTREAM_NOERROR;
+
+    return m_i_streambuf->GetIntPosition() - pos;
 }
 
 off_t wxMemoryInputStream::OnSysSeek(off_t pos, wxSeekMode mode)
@@ -76,7 +92,8 @@ wxMemoryOutputStream::wxMemoryOutputStream(char *data, size_t len)
   m_o_streambuf = new wxStreamBuffer(wxStreamBuffer::write);
   if (data)
     m_o_streambuf->SetBufferIO(data, data+len);
-  m_o_streambuf->Fixed(TRUE);
+  m_o_streambuf->Fixed(FALSE);
+  m_o_streambuf->Flushable(FALSE);
 }
 
 wxMemoryOutputStream::~wxMemoryOutputStream()
@@ -86,7 +103,12 @@ wxMemoryOutputStream::~wxMemoryOutputStream()
 
 size_t wxMemoryOutputStream::OnSysWrite(const void *buffer, size_t nbytes)
 {
-  return m_o_streambuf->Write(buffer, nbytes);
+  size_t bufsize = m_o_streambuf->GetBufferEnd() - m_o_streambuf->GetBufferStart();
+  size_t oldpos = m_o_streambuf->GetIntPosition();
+  m_o_streambuf->Write(buffer, nbytes);
+  size_t newpos = m_o_streambuf->GetIntPosition();
+  if (newpos == 0) return bufsize - oldpos;
+  else return newpos - oldpos;
 }
 
 off_t wxMemoryOutputStream::OnSysSeek(off_t pos, wxSeekMode mode)
@@ -99,5 +121,16 @@ off_t wxMemoryOutputStream::OnSysTell() const
   return m_o_streambuf->Tell();
 }
 
+size_t wxMemoryOutputStream::CopyTo(char *buffer, size_t len) const
+{
+  if (!buffer)
+    return 0;
+
+  if (len > GetSize())
+    len = GetSize();
+
+  memcpy(buffer, m_o_streambuf->GetBufferStart(), len);
+  return len;
+}
 
 #endif