--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/fdbuf/fdbuf.cc	Wed Jan 16 22:39:43 2008 +0100
@@ -0,0 +1,107 @@
+// Copyright (C) 1999,2000 Bruce Guenter <bruceg@em.ca>
+//
+// 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 "fdbuf.h"
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+
+///////////////////////////////////////////////////////////////////////////////
+// Class fdbuf
+///////////////////////////////////////////////////////////////////////////////
+fdbuf::fdbuf(int fdesc, bool dc, unsigned bufsz)
+  : buf(new char[bufsz]),
+    buflength(0),
+    bufstart(0),
+    offset(0),
+    errnum(0),
+    flags(0),
+    bufsize(bufsz),
+    fd(fdesc),
+    do_close(dc)
+{
+  if(!buf) {
+    flags = flag_error;
+    errnum = errno;
+  }
+  if(fdesc < 0)
+    flags |= flag_closed;
+#ifdef _REENTRANT
+  pthread_mutex_t tmp = PTHREAD_MUTEX_INITIALIZER;
+  mutex = tmp;
+  pthread_mutex_init(&mutex, 0);
+#else
+#ifdef FDBUF_MUTEX_DEBUG
+  mutex_count = 0;
+#endif
+#endif
+}
+
+fdbuf::~fdbuf()
+{
+  close();
+#ifdef _REENTRANT
+  pthread_mutex_destroy(&mutex);
+#endif
+  delete buf;
+}
+
+bool fdbuf::error() const
+{
+  return flags & flag_error;
+}
+
+bool fdbuf::closed() const
+{
+  return flags & flag_closed;
+}
+
+bool fdbuf::close()
+{
+  if(do_close && fd >= 0 && !(flags & flag_closed)) {
+    if(::close(fd) == -1) {
+      errnum = errno;
+      flags |= flag_error;
+      return false;
+    }
+    flags |= flag_closed;
+  }
+  return true;
+}
+
+#if defined(FDBUF_MUTEX_DEBUG) && !defined(_REENTRANT)
+{
+  int* null = 0;
+  (*null)++;
+  kill(getpid(), 9);
+}
+
+// Debugging code
+void fdbuf::lock()
+{
+  if(mutex)
+    abort();
+  ++mutex;
+}
+
+void fdbuf::unlock()
+{
+  if(mutex != 1)
+    abort();
+  --mutex;
+}
+#endif