X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/47fc03d21ab5b2d88959b6650a0151fb2c241c30..29149a64916d6fdc53e445adca9ef83bc58fb6c3:/src/common/stream.cpp?ds=sidebyside

diff --git a/src/common/stream.cpp b/src/common/stream.cpp
index 99baaa5634..9763842c4a 100644
--- a/src/common/stream.cpp
+++ b/src/common/stream.cpp
@@ -81,6 +81,8 @@ void wxStreamBuffer::Init()
 
 wxStreamBuffer::wxStreamBuffer(wxStreamBase& stream, BufMode mode)
 {
+    Init();
+
     m_stream = &stream;
     m_mode = mode;
 
@@ -90,6 +92,8 @@ wxStreamBuffer::wxStreamBuffer(wxStreamBase& stream, BufMode mode)
 
 wxStreamBuffer::wxStreamBuffer(BufMode mode)
 {
+    Init();
+
     m_stream = new wxStreamBase;
     m_mode = mode;
 
@@ -161,7 +165,7 @@ void wxStreamBuffer::SetBufferIO(void *start,
     m_buffer_size = len;
 
     // if we own it, we free it
-    m_destroybuf = !takeOwnership;
+    m_destroybuf = takeOwnership;
 
     ResetBuffer();
 }
@@ -627,6 +631,16 @@ wxStreamBase::~wxStreamBase()
 {
 }
 
+off_t wxStreamBase::OnSysSeek(off_t WXUNUSED(seek), wxSeekMode WXUNUSED(mode))
+{
+    return wxInvalidOffset;
+}
+
+off_t wxStreamBase::OnSysTell() const
+{
+    return wxInvalidOffset;
+}
+
 // ----------------------------------------------------------------------------
 // wxInputStream
 // ----------------------------------------------------------------------------
@@ -655,7 +669,12 @@ bool wxInputStream::Eof() const
 
     char c;
     self->Read(&c, 1);
-    if ( GetLastError() == wxSTREAM_EOF )
+
+    // some streams can know that they're at EOF before actually trying to
+    // read beyond the end of stream (e.g. files) while others have no way of
+    // knowing it, so to provide the same behaviour in all cases we only
+    // return TRUE from here if the character really couldn't be read
+    if ( !self->LastRead() && GetLastError() == wxSTREAM_EOF )
     {
         return TRUE;
     }
@@ -1010,7 +1029,8 @@ wxBufferedInputStream::wxBufferedInputStream(wxInputStream& s,
 
 wxBufferedInputStream::~wxBufferedInputStream()
 {
-    m_parent_i_stream->SeekI(-m_i_streambuf->GetBytesLeft(), wxFromCurrent);
+    m_parent_i_stream->SeekI(-(off_t)m_i_streambuf->GetBytesLeft(),
+                             wxFromCurrent);
 
     delete m_i_streambuf;
 }