AuroraMiddleware/wxWidgets
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Huge streams checking and warning fixes.

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32580 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Włodzimierz Skiba 2005-03-03 19:12:18 +00:00
parent 2a9c090515
commit 287d71d992
1 changed files with 15 additions and 5 deletions
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20
src/common/stream.cpp
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@ -580,7 +580,9 @@ wxFileOffset wxStreamBuffer::Seek(wxFileOffset 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 @@ wxFileOffset wxStreamBuffer::Seek(wxFileOffset 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;
}
@ -994,18 +998,22 @@ size_t wxCountingOutputStream::OnSysWrite(const void *WXUNUSED(buffer),
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:
@ -1013,6 +1021,8 @@ wxFileOffset wxCountingOutputStream::OnSysSeek(wxFileOffset pos, wxSeekMode mode
return wxInvalidOffset;
}
m_currentPos = new_pos;
if (m_currentPos > m_lastcount)
m_lastcount = m_currentPos;