-/*
-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
-*/
+// $Id$
+//
+// SuperTux
+// Copyright (C) 2006 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_stream.hpp"
+#include <assert.h>
#include <physfs.h>
#include <stdexcept>
#include <sstream>
int
IFileStreambuf::underflow()
{
- if(PHYSFS_eof(file))
+ if(PHYSFS_eof(file)) {
return traits_type::eof();
-
- size_t bytesread = (size_t) PHYSFS_read(file, buf, 1, sizeof(buf));
- if(bytesread == 0)
+ }
+
+ PHYSFS_sint64 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];
}
+IFileStreambuf::pos_type
+IFileStreambuf::seekpos(pos_type pos, std::ios_base::openmode)
+{
+ if(PHYSFS_seek(file, static_cast<PHYSFS_uint64> (pos)) == 0) {
+ return pos_type(off_type(-1));
+ }
+
+ // the seek invalidated the buffer
+ setg(buf, buf, buf);
+ return pos;
+}
+
+IFileStreambuf::pos_type
+IFileStreambuf::seekoff(off_type off, std::ios_base::seekdir dir,
+ std::ios_base::openmode mode)
+{
+ off_type pos = off;
+ PHYSFS_sint64 ptell = PHYSFS_tell(file);
+
+ switch(dir) {
+ case std::ios_base::beg:
+ break;
+ case std::ios_base::cur:
+ if(off == 0)
+ return static_cast<pos_type> (ptell) - static_cast<pos_type> (egptr() - gptr());
+ pos += static_cast<off_type> (ptell) - static_cast<off_type> (egptr() - gptr());
+ break;
+ case std::ios_base::end:
+ pos += static_cast<off_type> (PHYSFS_fileLength(file));
+ break;
+ default:
+#ifdef DEBUG
+ assert(false);
+#else
+ return pos_type(off_type(-1));
+#endif
+ }
+
+ return seekpos(static_cast<pos_type> (pos), mode);
+}
+
//---------------------------------------------------------------------------
OFileStreambuf::OFileStreambuf(const std::string& filename)