Exception message testing now supports wildcards

- extracted WildcardPattern from TestSpec::NamePattern

include/internal/catch_wildcard_pattern.hpp

@@ -0,0 +1,75 @@
+/*
+ *  Created by Phil on 13/7/2015.
+ *  Copyright 2015 Two Blue Cubes Ltd. All rights reserved.
+ *
+ *  Distributed under the Boost Software License, Version 1.0. (See accompanying
+ *  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ */
+#ifndef TWOBLUECUBES_CATCH_WILDCARD_PATTERN_HPP_INCLUDED
+#define TWOBLUECUBES_CATCH_WILDCARD_PATTERN_HPP_INCLUDED
+
+#include "catch_common.h"
+
+namespace Catch
+{
+    class WildcardPattern {
+        enum WildcardPosition {
+            NoWildcard = 0,
+            WildcardAtStart = 1,
+            WildcardAtEnd = 2,
+            WildcardAtBothEnds = WildcardAtStart | WildcardAtEnd
+        };
+        
+    public:
+        
+        enum CaseSensitivity {
+            CaseSensitive,
+            CaseInsensitive
+        };
+        WildcardPattern( std::string const& pattern, CaseSensitivity caseSensitivity )
+        :   m_caseSensitivity( caseSensitivity ),
+            m_wildcard( NoWildcard ),
+            m_pattern( adjustCase( pattern ) )
+        {
+            if( startsWith( m_pattern, "*" ) ) {
+                m_pattern = m_pattern.substr( 1 );
+                m_wildcard = WildcardAtStart;
+            }
+            if( endsWith( m_pattern, "*" ) ) {
+                m_pattern = m_pattern.substr( 0, m_pattern.size()-1 );
+                m_wildcard = static_cast<WildcardPosition>( m_wildcard | WildcardAtEnd );
+            }
+        }
+        virtual ~WildcardPattern();
+        virtual bool matches( std::string const& str ) const {
+            switch( m_wildcard ) {
+                case NoWildcard:
+                    return m_pattern == adjustCase( str );
+                case WildcardAtStart:
+                    return endsWith( adjustCase( str ), m_pattern );
+                case WildcardAtEnd:
+                    return startsWith( adjustCase( str ), m_pattern );
+                case WildcardAtBothEnds:
+                    return contains( adjustCase( str ), m_pattern );
+            }
+            
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunreachable-code"
+#endif
+            throw std::logic_error( "Unknown enum" );
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+        }
+    private:
+        std::string adjustCase( std::string const& str ) const {
+            return m_caseSensitivity == CaseInsensitive ? toLower( str ) : str;
+        }
+        CaseSensitivity m_caseSensitivity;
+        WildcardPosition m_wildcard;
+        std::string m_pattern;
+    };
+}
+
+#endif // TWOBLUECUBES_CATCH_WILDCARD_PATTERN_HPP_INCLUDED