PsRegex Struct Reference

PsRegex class. More...

Public Member Functions
virtual void	Destroy ()=0
	Destroys PsRegex resources. More...
virtual bool	SetPattern (const wchar_t *pattern)=0
	Sets a regular expression to search for. More...
virtual bool	Search (const wchar_t *text, int position)=0
	Searches for a match in a string. Use positions parameter to find more patterns. More...
virtual int	GetText (wchar_t *buffer, int len)=0
	Gets a buffer containing the matched text if it finds a match, otherwise it returns 0. More...
virtual int	GetPosition ()=0
virtual int	GetLength ()=0
	Gets a length of the matched text. More...
virtual int	GetNumMatches ()=0
	Gets the number of matched text in pattern. More...
virtual int	GetMatchText (int index, wchar_t *buffer, int len)=0
	Gets the matched text by index. More...

Detailed Description

PsRegex class.

A regular expression is an object that describes a pattern of characters. Regular expressions are used to perform pattern-matching functions on text. It helps to recognize a logical structure in a document. NOTE: Use Perl Regular Expression Syntax to create a new pattern.

Member Function Documentation

Destroy()

virtual void PsRegex::Destroy ( )

pure virtual

Destroys PsRegex resources.

See also

Pdfix::CreateRegex

GetLength()

virtual int PsRegex::GetLength ( )

pure virtual

Gets a length of the matched text.

Returns

Length of the matched text, otherwise it returns 0.

GetMatchText()

virtual int PsRegex::GetMatchText ( int  index, wchar_t *  buffer, int  len  )

pure virtual

Gets the matched text by index.

Parameters

index	The match index to get.
buffer	(filled by method) If the buffer is null function returns required length of string
len	Length of a buffer to be filled in.

Returns

Number of characters written into buffer of required length.

GetNumMatches()

virtual int PsRegex::GetNumMatches ( )

pure virtual

Gets the number of matched text in pattern.

Returns

Length the number of matches.

GetPosition()

virtual int PsRegex::GetPosition ( )

pure virtual

Gets a position of the matched text from the start position defined in PsRegex::Search method. NOTE: It's not a position from text buffer beginning.

Returns

Position of the matched text, otherwise it returns -1.

GetText()

virtual int PsRegex::GetText ( wchar_t *  buffer, int  len  )

pure virtual

Gets a buffer containing the matched text if it finds a match, otherwise it returns 0.

Parameters

buffer	(filled by method) If the buffer is null function returns required length of string
len	Length of a buffer to be filled in.

Returns

Number of characters written into buffer of required length.

Search()

virtual bool PsRegex::Search ( const wchar_t *  text, int  position  )

pure virtual

Searches for a match in a string. Use positions parameter to find more patterns.

Parameters

text	The string to be searched.
position	A position in the text where to start search.

Returns

This method returns true if it finds a match, otherwise it returns false. Sample RegexSearch

SetPattern()

virtual bool PsRegex::SetPattern ( const wchar_t *  pattern )

pure virtual

Sets a regular expression to search for.

Parameters

pattern

The Regular expression.

Returns

true if pattern was set, false otherwise.

See also

CPsRegex::AddPatternType, CPsRegex::Search Sample RegexSetPattern