added (broken, but running) diff routines for block-level diffs

[wikiq] / dtl / Ses.hpp

diff --git a/dtl/Ses.hpp b/dtl/Ses.hpp
new file mode 100644 (file)
index 0000000..ed50d40
--- /dev/null
+++ b/dtl/Ses.hpp
@@ -0,0 +1,112 @@
+/**
+   dtl-1.12 -- Diff Template Library
+   
+   In short, Diff Template Library is distributed under so called "BSD license",
+   
+   Copyright (c) 2008-2011 Tatsuhiko Kubo <cubicdaiya@gmail.com>
+   All rights reserved.
+   
+   Redistribution and use in source and binary forms, with or without modification,
+   are permitted provided that the following conditions are met:
+   
+   * Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.
+   
+   * Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+   
+   * Neither the name of the authors nor the names of its contributors
+   may be used to endorse or promote products derived from this software 
+   without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+   TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/* If you use this library, you must include dtl.hpp only. */
+
+#ifndef DTL_SES_H
+#define DTL_SES_H
+
+namespace dtl {
+    
+    /**
+     * Shortest Edit Script template class
+     */
+    template <typename elem>
+    class Ses : public Sequence< elem >
+    {
+    private :
+        typedef pair< elem, elemInfo > sesElem;
+        typedef vector< sesElem >      sesElemVec;
+    public :
+        
+        Ses () : onlyAdd(true), onlyDelete(true), onlyCopy(true) { }
+        ~Ses () {}
+        
+        bool isOnlyAdd () const {
+            return onlyAdd;
+        }
+        
+        bool isOnlyDelete () const {
+            return onlyDelete;
+        }
+        
+        bool isOnlyCopy () const {
+            return onlyCopy;
+        }
+        
+        bool isOnlyOneOperation () const {
+            return isOnlyAdd() || isOnlyAdd() || isOnlyCopy();
+        }
+        
+        bool isChange () const {
+            return !onlyCopy;
+        }
+        
+        using Sequence< elem >::addSequence;
+        void addSequence (elem e, long long beforeIdx, long long afterIdx, const edit_t type) {
+            elemInfo info;
+            info.beforeIdx = beforeIdx;
+            info.afterIdx  = afterIdx;
+            info.type      = type;
+            sesElem pe(e, info);
+            sequence.push_back(pe);
+            switch (type) {
+            case SES_DELETE:
+                onlyCopy   = false;
+                onlyAdd    = false;
+                break;
+            case SES_COMMON:
+                onlyAdd    = false;
+                onlyDelete = false;
+                break;
+            case SES_ADD:
+                onlyDelete = false;
+                onlyCopy   = false;
+                break;
+            }
+        }
+        
+        sesElemVec getSequence () const {
+            return sequence;
+        }
+    private :
+        sesElemVec sequence;
+        bool       onlyAdd;
+        bool       onlyDelete;
+        bool       onlyCopy;
+    };
+}
+
+#endif // DTL_SES_H