http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/htdig/StringMatch.h

// // StringMatch.h // // StringMatch: This class provides an interface to a fairly specialized string // lookup facility. It is intended to be used as a replace for any // regular expression matching when the pattern string is in the form: // // <string1>|<string2>|<string3>|... // // Just like regular expression routines, the pattern needs to be // compiled before it can be used. This is done using the Pattern() // member function. Once the pattern has been compiled, the member // function Find() can be used to search for the pattern in a string. // If a string has been found, the "which" and "length" parameters // will be set to the string index and string length respectively. // (The string index is counted starting from 0) The return value of // Find() is the position at which the string was found or -1 if no // strings could be found. If a case insensitive match needs to be // performed, call the IgnoreCase() member function before calling // Pattern(). This function will setup a character translation table // which will convert all uppercase characters to lowercase. If some // other translation is required, the TranslationTable() member // function can be called to provide a custom table. This table needs // to be 256 characters. // // Part of the ht://Dig package <http://www.htdig.org/> // Copyright (c) 1999-2004 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: StringMatch.h,v 1.13 2004/05/28 13:15:21 lha Exp $ // #ifndef _StringMatch_h_ #define _StringMatch_h_ #include "Object.h" #include "HtWordType.h" class StringMatch : public Object { public: // // Construction/Destruction // StringMatch(); ~StringMatch(); // // Set the pattern to search for. If given as a string needs to // be in the form <string1>|<string2>|... If in the form of a // List, it should be a list of String objects. // void Pattern(char *pattern, char sep = '|'); // // Search for any of the strings in the pattern in the given // string The return value is the offset in the source a pattern // was found. In this case, the which variable will be set to the // index of the pattern string and length will be set to the // length of that pattern string. If none of the pattern strings // could be found, the return value will be -1 // int FindFirst(const char *string, int &which, int &length); int FindFirst(const char *string); int FindFirstWord(const char *string, int &which, int &length); int FindFirstWord(const char *string); // // If you are interested in matching instead of searching, use // the following. Same parameters except that the return value will // be 1 if there was a match, 0 if there was not. // int Compare(const char *string, int &which, int &length); int Compare(const char *string); int CompareWord(const char *string, int &which, int &length); int CompareWord(const char *string); // // Provide a character translation table which will be applied to // both the pattern and the input string. This table should be an // array of 256 characters. If is the caller's responsibility to // manage this table's allocation. The table should remain valid // until this object has been destroyed. // void TranslationTable(char *table); // // Build a local translation table which maps all uppercase // characters to lowercase // void IgnoreCase(); // // Build a local translation table which ignores all given punctuation // characters // void IgnorePunct(char *punct = (char*)NULL); // // Determine if there is a pattern associated with this Match object. // int hasPattern() {return table[0] != 0;} protected: int *table[256]; unsigned char *trans; int local_alloc; }; #endif