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Diffstat (limited to 'debian/htdig/htdig-3.2.0b6/htfuzzy/Fuzzy.h')
| -rw-r--r-- | debian/htdig/htdig-3.2.0b6/htfuzzy/Fuzzy.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/debian/htdig/htdig-3.2.0b6/htfuzzy/Fuzzy.h b/debian/htdig/htdig-3.2.0b6/htfuzzy/Fuzzy.h new file mode 100644 index 00000000..825e357f --- /dev/null +++ b/debian/htdig/htdig-3.2.0b6/htfuzzy/Fuzzy.h @@ -0,0 +1,112 @@ +// +// Fuzzy.h +// +// Fuzzy: This is the base class for all the different types of fuzzy searches. +// We only define the interface. +// +// There are two main uses of classes derived from this class: +// 1) Creation of a fuzzy index +// 2) Searching for a word using the fuzzy index +// +// The Fuzzy classes take the raw words from the user's query and generate +// a list of words to be looked up in the database. These words are created +// using the getWords call and can either be picked off from a separate fuzzy +// database specific to the method, or by generating words on the fly. +// +// Part of the ht://Dig package <http://www.htdig.org/> +// Copyright (c) 1995-2004 The ht://Dig Group +// For copyright details, see the file COPYING in your distribution +// or the GNU Library General Public License (LGPL) version 2 or later +// <http://www.gnu.org/copyleft/lgpl.html> +// +// $Id: Fuzzy.h,v 1.12 2004/05/28 13:15:20 lha Exp $ +// + +#ifndef _Fuzzy_h_ +#define _Fuzzy_h_ + +#include "Object.h" +#include "htString.h" +#include "Database.h" +#include "HtWordType.h" +#include "HtWordList.h" + +class HtConfiguration; +class Dictionary; +class List; + + +class Fuzzy : public Object +{ +public: + // + // Construction/Destruction + // + Fuzzy(const HtConfiguration& config); + virtual ~Fuzzy(); + + // + // Given a single work, generate a list of replacement words using + // the current algorithm. + // + virtual void getWords(char *word, List &words); + + // + // For the current algorithm, open the key database + // + virtual int openIndex(); + + // + // For searching, we will need to keep track of the weight associated + // with a particular fuzzy algorithm. + // + void setWeight(double w) {weight = w;} + double getWeight() {return weight;} + + //******************************************************************* + // The following are used in the creation of the fuzzy databases. + // + // For the current algorithm, write the database to disk. + // + virtual int writeDB(); + + // + // For the current algorithm, create the database. + // This is for those algoritms that don't need a list of words + // to work. + // + virtual int createDB(const HtConfiguration &config); + + // + // Given a word from the htdig word database, create the appropriate + // entries into memory which will later be written out with writeDB(). + // + virtual void addWord(char *word); + + // + // Each algorithm has a name... + // + char *getName() {return name;} + + // + // Fuzzy algorithm factory. This returns a new Fuzzy algorithm + // object that belongs to the given name. + // + static Fuzzy *getFuzzyByName(char *name, const HtConfiguration& config); + +protected: + // + // Given a single word, generate a database key + // + virtual void generateKey(char *word, String &key); + + char *name; + Database *index; + Dictionary *dict; + double weight; + const HtConfiguration& config; +}; + +#endif + + |