initial commit

Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>

libs/wxWidgets-3.3.1/include/wx/sstream.h

@@ -0,0 +1,100 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/sstream.h
+// Purpose:     string-based streams
+// Author:      Vadim Zeitlin
+// Created:     2004-09-19
+// Copyright:   (c) 2004 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_SSTREAM_H_
+#define _WX_SSTREAM_H_
+
+#include "wx/stream.h"
+
+#if wxUSE_STREAMS
+
+// ----------------------------------------------------------------------------
+// wxStringInputStream is a stream reading from the given (fixed size) string
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_BASE wxStringInputStream : public wxInputStream
+{
+public:
+    // ctor associates the stream with the given string which makes a copy of
+    // it
+    wxStringInputStream(const wxString& s);
+
+    virtual wxFileOffset GetLength() const override;
+    virtual bool IsSeekable() const override { return true; }
+
+protected:
+    virtual wxFileOffset OnSysSeek(wxFileOffset ofs, wxSeekMode mode) override;
+    virtual wxFileOffset OnSysTell() const override;
+    virtual size_t OnSysRead(void *buffer, size_t size) override;
+
+private:
+    // Return the length of the string in bytes.
+    size_t GetBufferSize() const { return m_buf.length(); }
+
+    // the string that was passed in the ctor
+    wxString m_str;
+
+    // the buffer we're reading from
+    const wxCharBuffer m_buf;
+
+    // position in the stream in bytes, *not* in chars
+    size_t m_pos;
+
+    wxDECLARE_NO_COPY_CLASS(wxStringInputStream);
+};
+
+// ----------------------------------------------------------------------------
+// wxStringOutputStream writes data to the given string, expanding it as needed
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_BASE wxStringOutputStream : public wxOutputStream
+{
+public:
+    // The stream will write data either to the provided string or to an
+    // internal string which can be retrieved using GetString()
+    //
+    // Note that the conversion object should have the life time greater than
+    // this stream.
+    explicit wxStringOutputStream(wxString *pString = nullptr,
+                                  wxMBConv& conv = wxConvUTF8);
+
+    // get the string containing current output
+    const wxString& GetString() const { return *m_str; }
+
+    virtual bool IsSeekable() const override { return true; }
+
+protected:
+    virtual wxFileOffset OnSysTell() const override;
+    virtual size_t OnSysWrite(const void *buffer, size_t size) override;
+
+private:
+    // internal string, not used if caller provided his own string
+    wxString m_strInternal;
+
+    // pointer given by the caller or just pointer to m_strInternal
+    wxString *m_str;
+
+    // position in the stream in bytes, *not* in chars
+    size_t m_pos;
+
+    // converter to use: notice that with the default UTF-8 one the input
+    // stream must contain valid UTF-8 data, use wxConvISO8859_1 to work with
+    // arbitrary 8 bit data
+    wxMBConv& m_conv;
+
+    // unconverted data from the last call to OnSysWrite()
+    wxMemoryBuffer m_unconv;
+
+    wxDECLARE_NO_COPY_CLASS(wxStringOutputStream);
+};
+
+#endif // wxUSE_STREAMS
+
+#endif // _WX_SSTREAM_H_
+