changed: the way of building the cmslu

main Makefile is in an application directory
         in cmslu/ there are only libraries:
         core.a content.a confparser.a templates.a
added:   macros APPTEMPLATES APPFUNCTIONS
         defined in the application's Makefile
added:   PatternCacher
added:   cmslu function 'run'
         files which have exec permissions
         can be run (run is a default function)
         after read from the database the content is parsed
         into Ezc::Pattern object, this object is then cached
         in PatternCacher
added:   FunctionCodeParser - will be used to parse the code
         from standard functions (ls/cat/...)


git-svn-id: svn://ttmath.org/publicrep/cmslu/trunk@475 e52654a7-88a9-db11-a3e9-0013d4bc506e

templates/patterncacher.h

@@ -0,0 +1,77 @@
+/*
+ * This file is a part of CMSLU -- Content Management System like Unix
+ * and is not publicly distributed
+ * 
+ * Copyright (c) 2008, Tomasz Sowa
+ * All rights reserved.
+ * 
+ */
+ 
+#ifndef headerfilepatterncacher
+#define headerfilepatterncacher
+
+#include <vector>
+#include <map>
+
+#include "../core/item.h"
+#include "../../ezc/src/ezc.h"
+#include "../core/log.h"
+
+
+
+class PatternCacher
+{
+	struct PatternUsed
+	{
+		Ezc::Pattern pattern;
+		int used;    // how many times used (incremented by GetPattern and UpdatePattern)
+		int item_id;
+	};
+
+	typedef std::map<long, PatternUsed> PatternTab;
+	PatternTab pattern_tab;
+
+	
+	// temporarily struct used during deleting some items from pattern_tab
+	struct PatternErase
+	{
+		PatternTab::iterator iter;
+		int used;
+		
+		bool operator<(const PatternErase & p) const { return used < p.used; }
+	};
+	
+	// temporarily buffer used during deleting some items from pattern_tab
+	std::vector<PatternErase> erase_tab;
+	
+	
+
+	void CreatePattern(const Item & item, Ezc::Pattern & pattern);
+	void AddIndexes(const Item & item, size_t pattern_index);
+	Ezc::Pattern * AddPattern(const Item & item);
+	void CheckTableSize();
+
+
+	// the size of pattern_tab when we are deleting some items
+	size_t when_delete_patterns;
+	
+	// how many items to delete
+	size_t how_many_delete;
+
+public:
+
+	PatternCacher();
+
+	// returning a pattern corresponding to the 'item'
+	Ezc::Pattern * GetPattern(const Item & item);
+
+	// updating the pattern for the item
+	// if there is no such a pattern the method does nothing
+	void UpdatePattern(const Item & item);
+	
+	// deleting the pattern for the item
+	// if there is no such a pattern the method does nothing
+	void DeletePattern(const Item & item);
+};
+
+#endif