The GtkRadiant sources as originally released under the GPL license.

libs/stream/memstream.h

@@ -0,0 +1,81 @@
+/*
+Copyright (C) 2001-2006, William Joseph.
+All Rights Reserved.
+
+This file is part of GtkRadiant.
+
+GtkRadiant is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+GtkRadiant is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GtkRadiant; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#if !defined(INCLUDED_STREAM_MEMSTREAM_H)
+#define INCLUDED_STREAM_MEMSTREAM_H
+
+#include "itextstream.h"
+#include <algorithm>
+#include <vector>
+
+class BufferOutputStream : public TextOutputStream
+{
+  std::vector<char> m_buffer;
+public:
+  std::size_t write(const char* buffer, std::size_t length)
+  {
+    m_buffer.insert(m_buffer.end(), buffer, buffer+length);
+    return length;
+  }
+  const char* data() const
+  {
+    return &(*m_buffer.begin());
+  }
+  std::size_t size() const
+  {
+    return m_buffer.size();
+  }
+  void clear()
+  {
+    std::vector<char> empty;
+    std::swap(empty, m_buffer);
+  }
+};
+
+template<typename T>
+inline BufferOutputStream& operator<<(BufferOutputStream& ostream, const T& t)
+{
+  return ostream_write(ostream, t);
+}
+
+
+class BufferInputStream : public TextInputStream
+{
+  const char* m_read;
+  const char* m_end;
+public:
+  BufferInputStream(const char* buffer, std::size_t length)
+    : m_read(buffer), m_end(buffer + length)
+  {
+  }
+  std::size_t read(char* buffer, std::size_t length)
+  {
+    std::size_t count = std::min(std::size_t(m_end - m_read), length);
+    const char* end = m_read + count;
+    while(m_read != end)
+    {
+      *buffer++ = *m_read++;
+    }
+    return count;
+  }
+};
+
+#endif