diff liboctave/dir-ops.h @ 1782:b17d014b6926

[project @ 1996-01-24 08:09:17 by jwe] Initial revision
author jwe
date Wed, 24 Jan 1996 08:09:17 +0000
parents
children 1b43d3c06c04
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+// dir-ops.h                                            -*- C++ -*-
+/*
+
+Copyright (C) 1996 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 (octave_dir_ops_h)
+#define octave_dir_ops_h 1
+
+#include <string>
+
+#include "str-vec.h"
+
+struct DIR;
+
+class
+dir_entry
+{
+public:
+
+  dir_entry (const string& n = string ()) : name (n), dir (0)
+      {
+	if (! name.empty ())
+	  open ();
+      }
+
+  dir_entry (const dir_entry& d) { copy (d); }
+
+  dir_entry& operator = (const dir_entry& d)
+    {
+      copy (d);
+      return *this;
+    }
+
+  ~dir_entry (void) { close (); }
+
+  bool open (const string& = string ());
+
+  string_vector read (void);
+
+  void close (void);
+
+  bool ok (void) const { return dir && ! fail; }
+
+  operator void* () const { return ok () ? (void *) -1 : (void *) 0; }
+
+  string error (void) const { return ok () ? string () : errmsg; }
+
+private:
+
+  // Name of the directory.
+  string name;
+
+  // A pointer to the contents of the directory.
+  DIR *dir;
+
+  // TRUE means the open for this directory failed.
+  bool fail;
+
+  // If a failure occurs, this contains the system error text.
+  string errmsg;
+
+  void copy (const dir_entry&);
+};
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; page-delimiter: "^/\\*" ***
+;;; End: ***
+*/