Implement directory iteration support

1 files changed, 65 insertions, 0 deletions

diff --git a/butl/filesystem.ixx b/butl/filesystem.ixx
new file mode 100644
index 0000000..7aa3622
--- /dev/null
+++ b/butl/filesystem.ixx
@@ -0,0 +1,65 @@
+// file      : butl/filesystem.ixx -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+namespace butl
+{
+  // dir_entry
+  //
+  inline entry_type dir_entry::
+  type () const
+  {
+    return t_ != entry_type::unknown ? t_ : (t_ = type (false));
+  }
+
+  inline entry_type dir_entry::
+  ltype () const
+  {
+    entry_type t (type ());
+    return t != entry_type::symlink
+      ? t
+      : lt_ != entry_type::unknown ? lt_ : (lt_ = type (true));
+  }
+
+  // dir_iterator
+  //
+  inline dir_iterator::
+  dir_iterator (dir_iterator&& x): e_ (std::move (x.e_)), h_ (x.h_)
+  {
+    x.h_ = nullptr;
+  }
+
+  inline dir_iterator& dir_iterator::
+  operator= (dir_iterator&& x)
+  {
+    if (this != &x)
+    {
+      e_ = std::move (x.e_);
+      h_ = x.h_;
+      x.h_ = nullptr;
+    }
+    return *this;
+  }
+
+  inline bool
+  operator== (const dir_iterator& x, const dir_iterator& y)
+  {
+    return x.h_ == y.h_;
+  }
+
+  inline bool
+  operator!= (const dir_iterator& x, const dir_iterator& y)
+  {
+    return !(x == y);
+  }
+
+#ifndef _WIN32
+  inline dir_iterator::
+  ~dir_iterator ()
+  {
+    if (h_ != nullptr)
+      ::closedir (h_); // Ignore any errors.
+  }
+#else
+#endif
+}