Initial import of the CDE 2.1.30 sources from the Open Group.

cde/programs/dtinfo/dtinfogen/infolib/etc/SearchEng.h

@@ -0,0 +1,86 @@
+/* $XConsortium: SearchEng.h /main/2 1996/07/18 16:48:56 drk $ */
+// SearchEngine.h - This serves as a base class for different search engine
+
+#ifndef SRH_ENG_HEADER
+#define SRH_ENG_HEADER
+
+#include "FlexBuffer.h"
+
+template <class Type> class Stack;
+
+class ComplexTask;
+class Token;
+class NodeData;
+class GraphicsTask;
+
+class SearchEngine : public ComplexTask {
+
+protected:
+
+  const FlexBuffer *termsBuffer;
+  int   f_base;
+  int   hasTerms;
+  int   CollectObject;
+  NodeData     *f_parent;
+  GraphicsTask *f_graphics;
+
+protected:
+  virtual void write_start_tag ( const Token & ) = 0;
+  virtual void write_end_tag   ( const Token & ) = 0;
+  virtual void write_terms ( FlexBuffer *termsbuf ) = 0;
+
+  virtual void write_buffer() = 0; /*
+				    * This corresponds to the 
+				    * write_fulcrum_buffer, write_qsearch_buffer 
+				    */
+public:
+
+  /* The following 2 are pure virtual, so that each derived class has to 
+   * redefine them
+   */
+  virtual void markup( const Token &) = 0;
+  virtual void data ( const char *, size_t ) = 0;
+
+  /* default will be used if not redefined by the derived class
+   */
+  virtual int          HasSearchTerms() const;
+  virtual const FlexBuffer   *DumpSearchTerms();
+  virtual int          GraphicsIsDone() const;
+  virtual NodeData     *node_data() { return f_parent; }
+
+
+protected:
+  SearchEngine( NodeData *, const Token &);  /* This is not intended to be
+					      * used as a constructor for 
+					      * instantiation an object
+					      * but used as a common point
+					      * of initialization of all the
+					      * base classes for SearchEng
+					      */
+
+public:
+
+  virtual ~SearchEngine() {}
+
+};
+
+inline
+int
+SearchEngine::HasSearchTerms() const
+{
+  return( hasTerms );
+}
+
+//---------------------------------------------------------------------
+inline
+const FlexBuffer *
+SearchEngine::DumpSearchTerms()
+{
+  hasTerms = 0;
+  return ( termsBuffer );
+}
+
+#endif
+
+  
+