RegEx.DLL

Rating   Downloads : 250
Price :     Freeware

Size : 0.03MB
Version : 0.6.0 Major Update  
OS

Win98 , Windows2000 , WinXP , Windows2003 , Windows Vista Starter , Windows Vista Home Basic , Windows Vista Home Premium , Windows Vista Business , Windows Vista Enterprise , Windows Vista Ultimate , Windows Vista Home Basic x64 , Windows Vista Home Premium x64 , Windows Vista Business x64 , Windows Vista Enterprise x64 , Windows Vista Ultimate x64 
RegEx.DLL

Provides regular-expression handling for VB.

RegEx. DLL provides some much needed regular-expression handling for VB programmers. The clsRegEx class implements all the common UNIX wildcard characters allowing sophisticated string comparisons and search-and-replace operations to be performed.

* The * character represents zero or more occurrences of the previous character in the expression:

ab*c matches ac, abc, abbc, abbbbbbbc...

* The character represents one or more occurrences of the previous character in the expression:

ab c matches abc, abbc, abbbbbbbc but not ac

* Numbers within curly brackets represent a specific number of occurrences of the previous character:

a 3 matches aaa a 3,5 matches aaa, aaaa and aaaaa

* The ! character represents zero or one occurrences of the previous character:

a! c matches ac and aac

* The . character represents any single character:

a. c matches abc, aXc but not ac or abbc

Round brackets can be used to apply multipliers, such as * or , to groups of characters:

* (abc)* matches an empty string, abc, abcabc, abcabcabc...

* (abc) matches abc, abcabc, abcabcabc...

Square brackets can be used to specify possible values for a single character. A hyphen can be used in this context to represent a range of characters. If the first character within the brackets is a ^ then the range is exclusive rather than inclusive (ie. the expression matches any single character not shown):

* a[bB]c matches abc and aBc

* a[^0-9]c matches abc and aXc but not a0c... a9c

A \ symbol negates the special meaning of the following character. Only valid if it precedes one of *! \ ([]).

* a\*c matches a*c

* a[\[\]]c matches a]c and a[c

* a\\c matches a\c

* ab\c is not a valid expression

The download includes VB code samples demonstrating how to use the library.

This library continues to be in beta test - it works well for short expressions, but due to the recursive nature of the code longer strings can get a while.

You can find some alternatives for RegEx.DLL here .
RegEx.DLL


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