'i' is already used in this scope so make it clearer.

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

diff --git a/src/common/stream.cpp b/src/common/stream.cpp
index 87748a4fe6a1deda292f3319849d28fe6aaf7f96..babad3a1100956df4c0ba5dccc18bd8d74e7ea5a 100644 (file)
--- a/src/common/stream.cpp
+++ b/src/common/stream.cpp
@@ -434,7 +434,7 @@ size_t wxStreamBuffer::Read(wxStreamBuffer *dbuf)
 
     do
     {
-        nRead = Read(dbuf, WXSIZEOF(buf));
+        nRead = Read(buf, WXSIZEOF(buf));
         if ( nRead )
         {
             nRead = dbuf->Write(buf, nRead);
@@ -551,11 +551,11 @@ size_t wxStreamBuffer::Write(wxStreamBuffer *sbuf)
     return total;
 }
 
-off_t wxStreamBuffer::Seek(off_t pos, wxSeekMode mode)
+wxFileOffset wxStreamBuffer::Seek(wxFileOffset pos, wxSeekMode mode)
 {
-    off_t ret_off, diff;
+    wxFileOffset ret_off, diff;
 
-    off_t last_access = GetLastAccess();
+    wxFileOffset last_access = GetLastAccess();
 
     if ( !m_flushable )
     {
@@ -580,7 +580,9 @@ off_t wxStreamBuffer::Seek(off_t pos, wxSeekMode mode)
         }
         if (diff < 0 || diff > last_access)
             return wxInvalidOffset;
-        SetIntPosition(diff);
+        size_t int_diff = (size_t)diff;
+        wxCHECK_MSG( (wxFileOffset)int_diff == diff, wxInvalidOffset, wxT("huge file not supported") );
+        SetIntPosition(int_diff);
         return diff;
     }
 
@@ -605,7 +607,9 @@ off_t wxStreamBuffer::Seek(off_t pos, wxSeekMode mode)
             }
             else
             {
-                SetIntPosition(diff);
+                size_t int_diff = (size_t)diff;
+                wxCHECK_MSG( (wxFileOffset)int_diff == diff, wxInvalidOffset, wxT("huge file not supported") );
+                SetIntPosition(int_diff);
                 return pos;
             }
 
@@ -619,9 +623,9 @@ off_t wxStreamBuffer::Seek(off_t pos, wxSeekMode mode)
     return wxInvalidOffset;
 }
 
-off_t wxStreamBuffer::Tell() const
+wxFileOffset wxStreamBuffer::Tell() const
 {
-    off_t pos;
+    wxFileOffset pos;
 
     // ask the stream for position if we have a real one
     if ( m_stream )
@@ -657,16 +661,36 @@ wxStreamBase::~wxStreamBase()
 {
 }
 
-off_t wxStreamBase::OnSysSeek(off_t WXUNUSED(seek), wxSeekMode WXUNUSED(mode))
+size_t wxStreamBase::GetSize() const
+{
+    wxFileOffset length = GetLength();
+    return length == wxInvalidOffset ? 0 : (size_t)length;
+}
+
+wxFileOffset wxStreamBase::OnSysSeek(wxFileOffset WXUNUSED(seek), wxSeekMode WXUNUSED(mode))
 {
     return wxInvalidOffset;
 }
 
-off_t wxStreamBase::OnSysTell() const
+wxFileOffset wxStreamBase::OnSysTell() const
 {
     return wxInvalidOffset;
 }
 
+#if WXWIN_COMPATIBILITY_2_2
+
+wxStreamError wxStreamBase::LastError() const
+{
+    return m_lasterror;
+}
+
+size_t wxStreamBase::StreamSize() const
+{
+    return GetSize();
+}
+
+#endif // WXWIN_COMPATIBILITY_2_2
+
 // ----------------------------------------------------------------------------
 // wxInputStream
 // ----------------------------------------------------------------------------
@@ -853,7 +877,7 @@ wxInputStream& wxInputStream::Read(wxOutputStream& stream_out)
     return *this;
 }
 
-off_t wxInputStream::SeekI(off_t pos, wxSeekMode mode)
+wxFileOffset wxInputStream::SeekI(wxFileOffset pos, wxSeekMode mode)
 {
     // RR: This code is duplicated in wxBufferedInputStream. This is
     // not really a good design, but buffered stream are different
@@ -887,9 +911,9 @@ off_t wxInputStream::SeekI(off_t pos, wxSeekMode mode)
     return OnSysSeek(pos, mode);
 }
 
-off_t wxInputStream::TellI() const
+wxFileOffset wxInputStream::TellI() const
 {
-    off_t pos = OnSysTell();
+    wxFileOffset pos = OnSysTell();
 
     if (pos != wxInvalidOffset)
         pos -= (m_wbacksize - m_wbackcur);
@@ -933,12 +957,12 @@ wxOutputStream& wxOutputStream::Write(wxInputStream& stream_in)
     return *this;
 }
 
-off_t wxOutputStream::TellO() const
+wxFileOffset wxOutputStream::TellO() const
 {
     return OnSysTell();
 }
 
-off_t wxOutputStream::SeekO(off_t pos, wxSeekMode mode)
+wxFileOffset wxOutputStream::SeekO(wxFileOffset pos, wxSeekMode mode)
 {
     return OnSysSeek(pos, mode);
 }
@@ -957,7 +981,7 @@ wxCountingOutputStream::wxCountingOutputStream ()
      m_currentPos = 0;
 }
 
-size_t wxCountingOutputStream::GetSize() const
+wxFileOffset wxCountingOutputStream::GetLength() const
 {
     return m_lastcount;
 }
@@ -972,20 +996,24 @@ size_t wxCountingOutputStream::OnSysWrite(const void *WXUNUSED(buffer),
     return m_currentPos;
 }
 
-off_t wxCountingOutputStream::OnSysSeek(off_t pos, wxSeekMode mode)
+wxFileOffset wxCountingOutputStream::OnSysSeek(wxFileOffset pos, wxSeekMode mode)
 {
+    ssize_t new_pos = (ssize_t)pos;
+
     switch ( mode )
     {
         case wxFromStart:
-            m_currentPos = pos;
+            wxCHECK_MSG( (wxFileOffset)new_pos == pos, wxInvalidOffset, wxT("huge position not supported") );
             break;
 
         case wxFromEnd:
-            m_currentPos = m_lastcount + pos;
+            new_pos = m_lastcount + new_pos;
+            wxCHECK_MSG( (wxFileOffset)new_pos == (wxFileOffset)(m_lastcount + pos), wxInvalidOffset, wxT("huge position not supported") );
             break;
 
         case wxFromCurrent:
-            m_currentPos += pos;
+            new_pos = m_currentPos + new_pos;
+            wxCHECK_MSG( (wxFileOffset)new_pos == (wxFileOffset)(m_currentPos + pos), wxInvalidOffset, wxT("huge position not supported") );
             break;
 
         default:
@@ -993,13 +1021,15 @@ off_t wxCountingOutputStream::OnSysSeek(off_t pos, wxSeekMode mode)
             return wxInvalidOffset;
     }
 
+    m_currentPos = new_pos;
+
     if (m_currentPos > m_lastcount)
         m_lastcount = m_currentPos;
 
     return m_currentPos;
 }
 
-off_t wxCountingOutputStream::OnSysTell() const
+wxFileOffset wxCountingOutputStream::OnSysTell() const
 {
     return m_currentPos;
 }
@@ -1063,7 +1093,7 @@ wxBufferedInputStream::wxBufferedInputStream(wxInputStream& s,
 
 wxBufferedInputStream::~wxBufferedInputStream()
 {
-    m_parent_i_stream->SeekI(-(off_t)m_i_streambuf->GetBytesLeft(),
+    m_parent_i_stream->SeekI(-(wxFileOffset)m_i_streambuf->GetBytesLeft(),
                              wxFromCurrent);
 
     delete m_i_streambuf;
@@ -1100,7 +1130,7 @@ wxInputStream& wxBufferedInputStream::Read(void *buf, size_t size)
     return *this;
 }
 
-off_t wxBufferedInputStream::SeekI(off_t pos, wxSeekMode mode)
+wxFileOffset wxBufferedInputStream::SeekI(wxFileOffset pos, wxSeekMode mode)
 {
     // RR: Look at wxInputStream for comments.
 
@@ -1120,9 +1150,9 @@ off_t wxBufferedInputStream::SeekI(off_t pos, wxSeekMode mode)
     return m_i_streambuf->Seek(pos, mode);
 }
 
-off_t wxBufferedInputStream::TellI() const
+wxFileOffset wxBufferedInputStream::TellI() const
 {
-    off_t pos = m_i_streambuf->Tell();
+    wxFileOffset pos = m_i_streambuf->Tell();
 
     if (pos != wxInvalidOffset)
         pos -= (m_wbacksize - m_wbackcur);
@@ -1135,12 +1165,12 @@ size_t wxBufferedInputStream::OnSysRead(void *buffer, size_t bufsize)
     return m_parent_i_stream->Read(buffer, bufsize).LastRead();
 }
 
-off_t wxBufferedInputStream::OnSysSeek(off_t seek, wxSeekMode mode)
+wxFileOffset wxBufferedInputStream::OnSysSeek(wxFileOffset seek, wxSeekMode mode)
 {
     return m_parent_i_stream->SeekI(seek, mode);
 }
 
-off_t wxBufferedInputStream::OnSysTell() const
+wxFileOffset wxBufferedInputStream::OnSysTell() const
 {
     return m_parent_i_stream->TellI();
 }
@@ -1179,6 +1209,13 @@ wxBufferedOutputStream::~wxBufferedOutputStream()
     delete m_o_streambuf;
 }
 
+bool wxBufferedOutputStream::Close()
+{
+    Sync();
+    return IsOk();
+}
+
+
 wxOutputStream& wxBufferedOutputStream::Write(const void *buffer, size_t size)
 {
     m_lastcount = 0;
@@ -1186,13 +1223,13 @@ wxOutputStream& wxBufferedOutputStream::Write(const void *buffer, size_t size)
     return *this;
 }
 
-off_t wxBufferedOutputStream::SeekO(off_t pos, wxSeekMode mode)
+wxFileOffset wxBufferedOutputStream::SeekO(wxFileOffset pos, wxSeekMode mode)
 {
     Sync();
     return m_o_streambuf->Seek(pos, mode);
 }
 
-off_t wxBufferedOutputStream::TellO() const
+wxFileOffset wxBufferedOutputStream::TellO() const
 {
     return m_o_streambuf->Tell();
 }
@@ -1208,19 +1245,19 @@ size_t wxBufferedOutputStream::OnSysWrite(const void *buffer, size_t bufsize)
     return m_parent_o_stream->Write(buffer, bufsize).LastWrite();
 }
 
-off_t wxBufferedOutputStream::OnSysSeek(off_t seek, wxSeekMode mode)
+wxFileOffset wxBufferedOutputStream::OnSysSeek(wxFileOffset seek, wxSeekMode mode)
 {
     return m_parent_o_stream->SeekO(seek, mode);
 }
 
-off_t wxBufferedOutputStream::OnSysTell() const
+wxFileOffset wxBufferedOutputStream::OnSysTell() const
 {
     return m_parent_o_stream->TellO();
 }
 
-size_t wxBufferedOutputStream::GetSize() const
+wxFileOffset wxBufferedOutputStream::GetLength() const
 {
-   return m_parent_o_stream->GetSize() + m_o_streambuf->GetIntPosition();
+   return m_parent_o_stream->GetLength() + m_o_streambuf->GetIntPosition();
 }
 
 void wxBufferedOutputStream::SetOutputStreamBuffer(wxStreamBuffer *buffer)