From 4bd00b89c7a6156d568f6c9ccb636a406a1e996a Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Tue, 15 Nov 2011 01:25:03 +0000
Subject: [PATCH] utility function to detect symlinks

git-svn-id: svn://localhost/ardour2/branches/3.0@10604 d708f5d6-7413-0410-9779-e7cbd77b26cf
---
 libs/pbd/pbd/symlink.h | 29 +++++++++++++++++++++++++++++
 libs/pbd/symlink.cc    | 42 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 71 insertions(+)
 create mode 100644 libs/pbd/pbd/symlink.h
 create mode 100644 libs/pbd/symlink.cc

diff --git a/libs/pbd/pbd/symlink.h b/libs/pbd/pbd/symlink.h
new file mode 100644
index 0000000000..1820e51ad1
--- /dev/null
+++ b/libs/pbd/pbd/symlink.h
@@ -0,0 +1,29 @@
+/*
+    Copyright (C) 2011 Paul Davis
+
+    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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __libpbd_symlink_h__
+#define __libpbd_symlink_h__
+
+#include <string>
+
+namespace PBD {
+	bool is_symlink (const std::string&);
+}
+
+#endif /* __libpbd_symlink_h__ */
diff --git a/libs/pbd/symlink.cc b/libs/pbd/symlink.cc
new file mode 100644
index 0000000000..6497a5a352
--- /dev/null
+++ b/libs/pbd/symlink.cc
@@ -0,0 +1,42 @@
+/*
+    Copyright (C) 2011 Paul Davis
+
+    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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <string>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <glib.h>
+#include <glib/gstdio.h>
+
+#include "pbd/symlink.h"
+
+bool
+PBD::is_symlink (const std::string& path)
+{
+	struct stat statbuf;
+
+	if (g_lstat (path.c_str(), &statbuf)) {
+		return false;
+	}
+
+	if (S_ISLNK(statbuf.st_mode)) {
+		return true;
+	}
+
+	return false;
+}