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fixed bug in wxMemoryInput/OutputStream::OnSysRead/Write that caused incorrect LastRead reports

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6149 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Václav Slavík 2000-02-19 00:55:10 +00:00
parent 69a492c9b2
commit c83b076636
1 changed files with 13 additions and 5 deletions
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18
src/common/mstream.cpp
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@ -52,9 +52,13 @@ char wxMemoryInputStream::Peek()
}
size_t wxMemoryInputStream::OnSysRead(void *buffer, size_t nbytes)
{
m_lastcount = 0;
return m_i_streambuf->Read(buffer, nbytes);
{
size_t bufsize = m_i_streambuf->GetBufferEnd() - m_i_streambuf->GetBufferStart();
size_t oldpos = m_i_streambuf->GetIntPosition();
m_i_streambuf->Read(buffer, nbytes);
size_t newpos = m_i_streambuf->GetIntPosition();
if (newpos == 0) return bufsize - oldpos;
else return newpos - oldpos;
}
off_t wxMemoryInputStream::OnSysSeek(off_t pos, wxSeekMode mode)
@ -88,8 +92,12 @@ wxMemoryOutputStream::~wxMemoryOutputStream()
size_t wxMemoryOutputStream::OnSysWrite(const void *buffer, size_t nbytes)
{
m_lastcount = 0;
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)