stringfilter_type.h

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00001 /* $Id: stringfilter_type.h 24632 2012-10-27 15:26:17Z frosch $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD 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, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #ifndef STRINGFILTER_TYPE_H
00013 #define STRINGFILTER_TYPE_H
00014 
00015 #include "core/smallvec_type.hpp"
00016 #include "strings_type.h"
00017 
00033 struct StringFilter {
00034 private:
00036   struct WordState {
00037     const char *start;                         
00038     bool match;                                
00039   };
00040 
00041   const char *filter_buffer;                     
00042   SmallVector<WordState, 4> word_index;          
00043   uint word_matches;                             
00044 
00045   const bool *case_sensitive;                    
00046 
00047 public:
00052   StringFilter(const bool *case_sensitive = NULL) : filter_buffer(NULL), word_matches(0), case_sensitive(case_sensitive) {}
00053   ~StringFilter() { free(this->filter_buffer); }
00054 
00055   void SetFilterTerm(const char *str);
00056 
00061   bool IsEmpty() const { return this->word_index.Length() == 0; }
00062 
00063   void ResetState();
00064   void AddLine(const char *str);
00065   void AddLine(StringID str);
00066 
00071   bool GetState() const { return this->word_matches == this->word_index.Length(); }
00072 };
00073 
00074 #endif /* STRINGFILTER_TYPE_H */