Pattern_matcher Class Reference

Enables comparison of strings against particular set of patterns. More...

#include <pattern_matcher.h>

Public Member Functions
size_t	add_patterns (const std::string &patterns, char delimiter=':')
	Parses concatenated patterns and adds them to internal pattern list. More...
bool	is_matching (const std::string &text, const CHARSET_INFO *info) const
	Verifies whether text matches any of the matcher internal patterns. More...
void	clear ()
	Removes all previously stored patterns from pattern matcher. More...

Private Attributes
std::unordered_set< std::string >	m_patterns
	used for storing matcher patterns More...

Static Private Attributes
static const char	WILD_ONE = '?'
	any (single) character wild card More...
static const char	WILD_MANY = '*'
	zero or many characters wild card More...
static const char	WILD_ESCAPE = '\\'
	escape sequence character More...

Detailed Description

Enables comparison of strings against particular set of patterns.

Patterns may contain wildcards (WILD_ONE/WILD_MANY/WILD_ESCAPE). Pattern strings may be added to the class through a special method. Matching method traverses all of the patterns within pattern matcher in search for a match.

Member Function Documentation

add_patterns()

size_t Pattern_matcher::add_patterns	(	const std::string &	patterns,
		char	delimiter = ':'
	)

Parses concatenated patterns and adds them to internal pattern list.

Parameters

[in]	patterns	concatenated patterns
[in]	delimiter	delimiter for pattern concatenation

Returns

number of added patterns

clear()

void Pattern_matcher::clear

(

)

Removes all previously stored patterns from pattern matcher.

is_matching()

bool Pattern_matcher::is_matching	(	const std::string &	text,
		const CHARSET_INFO *	info
	)		const

Verifies whether text matches any of the matcher internal patterns.

Parameters

[in]	text	string to search for patterns
[in]	info	charset information for comparison rules

Returns

result of matching the text to internal patterns

Return values

true	at least one pattern matches provided string
false	string does not match any of the patterns

Member Data Documentation

m_patterns

std::unordered_set<std::string> Pattern_matcher::m_patterns

private

used for storing matcher patterns

WILD_ESCAPE

const char Pattern_matcher::WILD_ESCAPE = '\\'

staticprivate

escape sequence character

WILD_MANY

const char Pattern_matcher::WILD_MANY = '*'

staticprivate

zero or many characters wild card

WILD_ONE

const char Pattern_matcher::WILD_ONE = '?'

staticprivate

any (single) character wild card

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The documentation for this class was generated from the following files:

• client/pattern_matcher.h
• client/pattern_matcher.cc