+/*
+Copyright (C) 2005 Matthias Braun <matze@braunis.de>
+
+This program 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.
+
+This program 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 this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+#include <config.h>
+
+#include "physfs_stream.h"
+
+#include <physfs.h>
+#include <stdexcept>
+#include <sstream>
+
+IFileStreambuf::IFileStreambuf(const std::string& filename)
+{
+ file = PHYSFS_openRead(filename.c_str());
+ if(file == 0) {
+ std::stringstream msg;
+ msg << "Couldn't open file '" << filename << "': "
+ << PHYSFS_getLastError();
+ throw std::runtime_error(msg.str());
+ }
+}
+
+IFileStreambuf::~IFileStreambuf()
+{
+ PHYSFS_close(file);
+}
+
+int
+IFileStreambuf::underflow()
+{
+ if(PHYSFS_eof(file))
+ return traits_type::eof();
+
+ size_t bytesread = (size_t) PHYSFS_read(file, buf, 1, sizeof(buf));
+ if(bytesread == 0)
+ return traits_type::eof();
+ setg(buf, buf, buf + bytesread);
+
+ return buf[0];
+}
+
+//---------------------------------------------------------------------------
+
+OFileStreambuf::OFileStreambuf(const std::string& filename)
+{
+ file = PHYSFS_openWrite(filename.c_str());
+ if(file == 0) {
+ std::stringstream msg;
+ msg << "Couldn't open file '" << filename << "': "
+ << PHYSFS_getLastError();
+ throw std::runtime_error(msg.str());
+ }
+
+ setp(buf, buf+sizeof(buf));
+}
+
+OFileStreambuf::~OFileStreambuf()
+{
+ sync();
+ PHYSFS_close(file);
+}
+
+int
+OFileStreambuf::overflow(int c)
+{
+ if(pbase() == pptr())
+ return 0;
+
+ size_t size = pptr() - pbase();
+ PHYSFS_sint64 res = PHYSFS_write(file, pbase(), 1, size);
+ if(res <= 0)
+ return traits_type::eof();
+
+ if(c != traits_type::eof()) {
+ PHYSFS_sint64 res = PHYSFS_write(file, &c, 1, 1);
+ if(res <= 0)
+ return traits_type::eof();
+ }
+
+ setp(buf, buf + res);
+ return 0;
+}
+
+int
+OFileStreambuf::sync()
+{
+ return overflow(traits_type::eof());
+}
+
+//---------------------------------------------------------------------------
+
+IFileStream::IFileStream(const std::string& filename)
+ : std::istream(new IFileStreambuf(filename))
+{
+}
+
+IFileStream::~IFileStream()
+{
+ delete rdbuf();
+}
+
+//---------------------------------------------------------------------------
+
+OFileStream::OFileStream(const std::string& filename)
+ : std::ostream(new OFileStreambuf(filename))
+{
+}
+
+OFileStream::~OFileStream()
+{
+ delete rdbuf();
+}
+