1 files changed, 86 insertions, 0 deletions
diff --git a/src/base/PropertyName.cpp b/src/base/PropertyName.cpp
new file mode 100644
index 0000000..11ff019
--- /dev/null
+++ b/src/base/PropertyName.cpp
@@ -0,0 +1,86 @@
+// -*- c-basic-offset: 4 -*-
+
+
+/*
+    Rosegarden
+    A sequencer and musical notation editor.
+
+    This program is Copyright 2000-2008
+        Guillaume Laurent   <[email protected]>,
+        Chris Cannam        <[email protected]>,
+        Richard Bown        <[email protected]>
+
+    The moral right of the authors to claim authorship of this work
+    has been asserted.
+
+    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.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#include <iostream>
+#include <string>
+
+#include "PropertyName.h"
+#include "Exception.h"
+
+
+namespace Rosegarden 
+{
+using std::string;
+
+PropertyName::intern_map *PropertyName::m_interns = 0;
+PropertyName::intern_reverse_map *PropertyName::m_internsReversed = 0;
+int PropertyName::m_nextValue = 0;
+
+int PropertyName::intern(const string &s)
+{
+    if (!m_interns) {
+        m_interns = new intern_map;
+        m_internsReversed = new intern_reverse_map;
+    }
+
+    intern_map::iterator i(m_interns->find(s));
+    
+    if (i != m_interns->end()) {
+        return i->second;
+    } else {
+        int nv = ++m_nextValue;
+        m_interns->insert(intern_pair(s, nv));
+        m_internsReversed->insert(intern_reverse_pair(nv, s));
+        return nv;
+    }
+}
+
+string PropertyName::getName() const
+{
+    intern_reverse_map::iterator i(m_internsReversed->find(m_value));
+    if (i != m_internsReversed->end()) return i->second;
+
+    // dump some informative data, even if we aren't in debug mode,
+    // because this really shouldn't be happening
+    std::cerr << "ERROR: PropertyName::getName: value corrupted!\n";
+    std::cerr << "PropertyName's internal value is " << m_value << std::endl;
+    std::cerr << "Reverse interns are ";
+    i = m_internsReversed->begin();
+    if (i == m_internsReversed->end()) std::cerr << "(none)";
+    else while (i != m_internsReversed->end()) {
+	if (i != m_internsReversed->begin()) {
+	    std::cerr << ", ";
+	}
+	std::cerr << i->first << "=" << i->second;
+	++i;
+    }
+    std::cerr << std::endl;
+
+    throw Exception
+	("Serious problem in PropertyName::getName(): property "
+	 "name's internal value is corrupted -- see stderr for details");
+}
+
+const PropertyName PropertyName::EmptyPropertyName = "";
+
+}
+