--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/c-file-ptr-stream.cc	Thu Mar 23 07:34:55 2000 +0000
@@ -0,0 +1,126 @@
+/*
+
+Copyright (C) 2000 John W. Eaton
+
+This file is part of Octave.
+
+Octave 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, or (at your option) any
+later version.
+
+Octave 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 Octave; see the file COPYING.  If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+#if defined (__GNUG__)
+#pragma implementation
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "c_file_ptr_stream.h"
+
+#ifndef SEEK_SET
+#define SEEK_SET 0
+#endif
+
+#ifndef SEEK_CUR
+#define SEEK_CUR 1
+#endif
+
+#ifndef SEEK_END
+#define SEEK_END 2
+#endif
+
+c_file_ptr_buf::~c_file_ptr_buf (void) { fflush (f); }
+
+// XXX FIXME XXX -- I'm sure there is room for improvement here...
+
+int
+c_file_ptr_buf::overflow (int c)
+{
+  return (c != EOF) ? fputc (c, f) : fflush (f);
+}
+
+int
+c_file_ptr_buf::underflow (void)
+{
+  return fgetc (f);
+}
+
+int
+c_file_ptr_buf::uflow (void)
+{
+  return underflow ();
+}
+
+int
+c_file_ptr_buf::pbackfail (int c)
+{
+  return (c != EOF) ? ungetc (c, f) : EOF;
+}
+
+std::streamsize
+c_file_ptr_buf::xsputn (const char* s, std::streamsize n)
+{
+  return fwrite (s, 1, n, f);
+}
+
+std::streamsize
+c_file_ptr_buf::xsgetn (char *s, std::streamsize n)
+{
+  return fread (s, 1, n, f);
+}
+
+static inline int
+seekdir_to_whence (std::ios::seekdir dir)
+{
+  return ((dir == std::ios::beg) ? SEEK_SET :
+	  (dir == std::ios::cur) ? SEEK_CUR :
+	  (dir == std::ios::end) ? SEEK_END :
+	  dir);
+}
+
+std::streampos
+c_file_ptr_buf::seekoff (std::streamoff offset, std::ios::seekdir dir,
+			 std::ios::openmode)
+{
+  // XXX FIXME XXX -- is this the right thing to do?
+
+  fseek (f, offset, seekdir_to_whence (dir));
+
+  return ftell (f);
+}
+
+std::streampos
+c_file_ptr_buf::seekpos (std::streampos offset, std::ios::openmode)
+{
+  // XXX FIXME XXX -- is this the right thing to do?
+
+  fseek (f, offset, SEEK_SET);
+
+  return ftell (f);
+}
+
+int
+c_file_ptr_buf::sync (void)
+{
+  return 0;
+}
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/
+