std matcher engine class, extends reflex::StdMatcher for POSIX ERE std::regex::awk syntax and regex matching. More...

#include <stdmatcher.h>

Inheritance diagram for reflex::StdPosixMatcher:

Collaboration diagram for reflex::StdPosixMatcher:

[legend]

Public Member Functions
	StdPosixMatcher ()
	Default constructor. More...

	StdPosixMatcher (const char pattern, const Input &input=Input(), const char opt=NULL)
	Construct a POSIX matcher engine from a string regex pattern and an input character sequence. More...

	StdPosixMatcher (const std::string &pattern, const Input &input=Input(), const char *opt=NULL)
	Construct a POSIX ERE matcher engine from a string regex pattern and an input character sequence. More...

	StdPosixMatcher (const Pattern &pattern, const Input &input=Input(), const char *opt=NULL)
	Construct a matcher engine from a std::regex pattern and an input character sequence. More...

virtual PatternMatcher &	pattern (const Pattern &pattern)
	Set the pattern to use with this matcher (the given pattern is shared and must be persistent), fails when a non-POSIX ERE std::regex is given. More...

virtual PatternMatcher &	pattern (const Pattern *pattern)
	Set the pattern to use with this matcher (the given pattern is shared and must be persistent), fails when a non-POSIX ERE std::regex is given. More...

virtual PatternMatcher &	pattern (const char *pattern)
	Set the pattern from a regex string to use with this matcher. More...

virtual PatternMatcher &	pattern (const std::string &pattern)
	Set the pattern from a regex string to use with this matcher. More...

Public Member Functions inherited from reflex::StdMatcher
	StdMatcher ()
	Default constructor. More...

template<typename P >
	StdMatcher (const P pattern, const Input &input=Input(), const char opt=NULL)
	Construct matcher engine from a std::regex object or string regex, and an input character sequence. More...

template<typename P >
	StdMatcher (const P &pattern, const Input &input=Input(), const char *opt=NULL)
	Construct matcher engine from a std::regex object or string regex, and an input character sequence. More...

	StdMatcher (const StdMatcher &matcher)
	Copy constructor. More...

StdMatcher &	operator= (const StdMatcher &matcher)
	Assign a matcher. More...

virtual StdMatcher *	clone ()
	Polymorphic cloning. More...

virtual void	reset (const char *opt=NULL)
	Reset this matcher's state to the initial state and when assigned new input. More...

virtual PatternMatcher &	pattern (const StdMatcher &matcher)
	Set the pattern to use with this matcher as a shared pointer to another matcher pattern. More...

virtual PatternMatcher &	pattern (const Pattern *pattern)
	Set the pattern to use with this matcher (the given pattern is shared and must be persistent), overrides the ECMA/POSIX/AWK syntax option. More...

virtual PatternMatcher &	pattern (const Pattern &pattern)
	Set the pattern to use with this matcher (the given pattern is shared and must be persistent), overrides the ECMA/POSIX/AWK syntax option. More...

virtual std::pair< const char *, size_t >	operator[] (size_t n) const
	Returns captured text as a std::pair<const char*,size_t> with string pointer (non-0-terminated) and length. More...

virtual std::pair< size_t, const char * >	group_id ()
	Returns the group capture identifier containing the group capture index >0 and name (or NULL) of a named group capture, or (1,NULL) by default. More...

virtual std::pair< size_t, const char * >	group_next_id ()
	Returns the next group capture identifier containing the group capture index >0 and name (or NULL) of a named group capture, or (0,NULL) when no more groups matched. More...

Public Member Functions inherited from reflex::PatternMatcher< std::regex >
	PatternMatcher (const PatternMatcher &matcher)
	Copy constructor, the underlying pattern object is shared (not deep copied). More...

virtual	~PatternMatcher ()
	Delete matcher, deletes pattern when owned. More...

virtual PatternMatcher &	operator= (const PatternMatcher &matcher)
	Assign a matcher, the underlying pattern object is shared (not deep copied). More...

virtual PatternMatcher &	pattern (const PatternMatcher &matcher)
	Set the pattern to use with this matcher as a shared pointer to another matcher pattern. More...

virtual const Pattern &	pattern () const
	Returns a reference to the pattern object associated with this matcher. More...

bool	has_pattern () const
	Returns true if this matcher has a pattern. More...

bool	own_pattern () const
	Returns true if this matcher has its own pattern not received from another matcher (responsible to delete). More...

Public Member Functions inherited from reflex::AbstractMatcher
	AbstractMatcher (const Input &input, const char *opt)
	Construct a base abstract matcher. More...

	AbstractMatcher (const Input &input, const Option &opt)
	Construct a base abstract matcher. More...

virtual	~AbstractMatcher ()
	Delete abstract matcher, deletes this matcher's internal buffer. More...

bool	buffer (size_t blk=0)
	Set buffer block size for reading: use 0 (or omit argument) to buffer all input in which case returns true if all the data could be read and false if a read error occurred. More...

void	set_handler (Handler *handler)
	Set event handler functor to invoke when the buffer contents are shifted out, e.g. for logging the data searched. More...

void	set_reserve (size_t n)
	Set reserved bytes for buffer shifting. More...

Context	before ()
	Get the buffered context before the matching line. More...

Context	after ()
	Get the buffered context after EOF is reached. More...

void	interactive ()
	Set interactive input with buffer size of 1 to read data bytewise which is very slow. More...

void	flush ()
	Flush the buffer's remaining content. More...

virtual size_t	get (char *s, size_t n)
	Returns more input data directly from the source (method can be overriden, as by reflex::FlexLexer::get(s, n) for example that invokes reflex::FlexLexer::LexerInput(s, n)). More...

virtual bool	wrap ()
	Returns true if wrapping of input after EOF is supported. More...

virtual AbstractMatcher &	input (const Input &input)
	Set the input character sequence for this matcher and reset/restart the matcher. More...

AbstractMatcher &	buffer (char *base, size_t size)
	Set the buffer base containing 0-terminated character data to scan in place (data may be modified), reset/restart the matcher. More...

size_t	matches ()
	Returns nonzero capture index (i.e. true) if the entire input matches this matcher's pattern (and internally caches the true/false result to permit repeat invocations). More...

size_t	accept () const
	Returns a positive integer (true) indicating the capture index of the matched text in the pattern or zero (false) for a mismatch. More...

const char *	begin () const
	Returns pointer to the begin of the matched text (non-0-terminated), a constant-time operation, use with end() or use size() for text end/length. More...

const char *	end () const
	Returns pointer to the exclusive end of the matched text, a constant-time operation. More...

const char *	text ()
	Returns 0-terminated pattern match as a char pointer, does not include matched \0s, this is a constant-time operation. More...

std::string	str () const
	Returns the text matched as a string, a copy of text(), may include pattern-matched \0s. More...

std::wstring	wstr () const
	Returns the pattern match as a wide string, converted from UTF-8 text(), may include pattern-matched \0s. More...

size_t	size () const
	Returns the length of the matched text in number of bytes, including pattern-matched \0s, a constant-time operation. More...

size_t	wsize () const
	Returns the length of the matched text in number of wide characters. More...

int	chr () const
	Returns the first 8-bit character of the text matched. More...

int	wchr () const
	Returns the first wide character of the text matched. More...

void	lineno_skip (bool f=false)
	Set or reset mode to count matching lines only and skip other (e.g. for speed). More...

void	lineno (size_t n)
	Set or change the starting line number of the last match. More...

size_t	lineno ()
	Updates and returns the starting line number of the match in the input character sequence. More...

size_t	lines ()
	Returns the number of lines that the match spans. More...

size_t	lineno_end ()
	Returns the inclusive ending line number of the match in the input character sequence. More...

void	columno (size_t n)
	Set or change the starting column number of the last match. More...

size_t	columno ()
	Updates and returns the starting column number of the matched text, taking tab spacing into account and counting wide characters as one character each. More...

size_t	columns ()
	Returns the number of columns of the matched text, taking tab spacing into account and counting wide characters as one character each. More...

size_t	columno_end ()
	Returns the inclusive ending column number of the matched text on the ending matching line, taking tab spacing into account and counting wide characters as one character each. More...

std::pair< size_t, std::string >	pair () const
	Returns std::pair<size_t,std::string>(accept(), str()), useful for tokenizing input into containers of pairs. More...

std::pair< size_t, std::wstring >	wpair () const
	Returns std::pair<size_t,std::wstring>(accept(), wstr()), useful for tokenizing input into containers of pairs. More...

size_t	first () const
	Returns the position of the first character of the match in the input character sequence, a constant-time operation. More...

size_t	last () const
	Returns the exclusive position of the last character of the match in the input character sequence, a constant-time operation. More...

bool	at_bob () const
	Returns true if this matcher is at the start of a buffer to read an input character sequence. Use reset() to restart reading new input. More...

void	set_bob (bool bob)
	Set/reset the begin of a buffer state. More...

bool	at_end ()
	Returns true if this matcher has no more input to read from the input character sequence. More...

bool	hit_end () const
	Returns true if this matcher hit the end of the input character sequence. More...

void	set_end (bool eof)
	Set and force the end of input state. More...

bool	at_bol () const
	Returns true if this matcher reached the begin of a new line. More...

void	set_bol (bool bol)
	Set/reset the begin of a new line state. More...

bool	at_bow ()
	Returns true if this matcher matched text that begins an ASCII word. More...

bool	at_eow ()
	Returns true if this matcher matched text that ends an ASCII word. More...

int	input ()
	Returns the next 8-bit character (unsigned char 0..255 or EOF) from the input character sequence, while preserving the current text() match (but pointer returned by text() may change; warning: does not preserve the yytext string pointer when options –flex and –bison are used). More...

int	winput ()
	Returns the next wide character (unsigned 0..U+10FFFF or EOF) from the input character sequence, while preserving the current text() match (but pointer returned by text() may change; warning: does not preserve the yytext string pointer when options –flex and –bison are used). More...

void	unput (char c)
	Put back one character (8-bit) on the input character sequence for matching, DANGER: invalidates the previous text() pointer and match info, unput is not honored when matching in-place using buffer(base, size) and nothing has been read yet. More...

void	wunput (int c)
	Put back one (wide) character on the input character sequence for matching, DANGER: invalidates the previous text() pointer and match info, unput is not honored when matching in-place using buffer(base, size) and nothing has been read yet. More...

int	peek ()
	Peek at the next character available for reading from the current input source. More...

const char *	bol ()
	Returns pointer to the begin of the line in the buffer containing the matched text. More...

const char *	eol (bool inclusive=false)
	Returns pointer to the end of the line (last char + 1) in the buffer containing the matched text, DANGER: invalidates previous bol() and text() pointers, use eol() before bol(), text(), begin(), and end() when those are used. More...

const char *	aft (size_t len)
	Return pointer to the end of the match + len after, or at end of file, DANGER: invalidates previous bol() and text() pointers, use aft() before bol(), text(), begin(), and end() when those are used. More...

const char *	bef (size_t len)
	Return pointer to the begin of the match - len before, or at the begin of the file. More...

size_t	fetch (size_t len)
	Return number of bytes available given number of bytes to fetch ahead, limited by input size and buffer size, DANGER: invalidates previous bol() and text() pointers, use fetch() before bol(), text(), begin(), and end() when those are used. More...

size_t	avail ()
	Returns the number of bytes in the buffer available to search from the current begin()/text() position. More...

size_t	border ()
	Returns the byte offset of the match from the start of the line. More...

const char *	span ()
	Enlarge the match to span the entire line of input (excluding ), return text(). More...

std::string	line ()
	Returns the line of input (excluding ) as a string containing the matched text as a substring. More...

std::wstring	wline ()
	Returns the line of input (excluding ) as a wide string containing the matched text as a substring. More...

bool	skip (char c)
	Skip input until the specified ASCII character is consumed and return true, or EOF is reached and return false. More...

bool	skip (wchar_t c)
	Skip input until the specified Unicode character is consumed and return true, or EOF is reached and return false. More...

bool	skip (const char *s)
	Skip input until the specified literal UTF-8 string is consumed and return true, or EOF is reached and return false. More...

const char *	rest ()
	Fetch the rest of the input as text, useful for searching/splitting up to n times after which the rest is needed. More...

void	more ()
	Append the next match to the currently matched text returned by AbstractMatcher::text, when the next match found is adjacent to the current match. More...

void	less (size_t n)
	Truncate the AbstractMatcher::text length of the match to n characters in length and reposition for next match. More...

	operator size_t () const
	Cast this matcher to positive integer indicating the nonzero capture index of the matched text in the pattern, same as AbstractMatcher::accept. More...

	operator std::string () const
	Cast this matcher to a std::string of the text matched by this matcher. More...

	operator std::wstring () const
	Cast this matcher to a std::wstring of the text matched by this matcher. More...

	operator std::pair< size_t, std::string > () const
	Cast the match to std::pair<size_t,std::wstring>(accept(), wstr()), useful for tokenization into containers. More...

bool	operator== (const char *rhs) const
	Returns true if matched text is equal to a string, useful for std::algorithm. More...

bool	operator== (const std::string &rhs) const
	Returns true if matched text is equalt to a string, useful for std::algorithm. More...

bool	operator== (size_t rhs) const
	Returns true if capture index is equal to a given size_t value, useful for std::algorithm. More...

bool	operator== (int rhs) const
	Returns true if capture index is equal to a given int value, useful for std::algorithm. More...

bool	operator!= (const char *rhs) const
	Returns true if matched text is not equal to a string, useful for std::algorithm. More...

bool	operator!= (const std::string &rhs) const
	Returns true if matched text is not equal to a string, useful for std::algorithm. More...

bool	operator!= (size_t rhs) const
	Returns true if capture index is not equal to a given size_t value, useful for std::algorithm. More...

bool	operator!= (int rhs) const
	Returns true if capture index is not equal to a given int value, useful for std::algorithm. More...

void	tabs (char n)
	Set tab size 1, 2, 4, or 8. More...

char	tabs ()
	Returns current tab size 1, 2, 4, or 8. More...

Static Public Member Functions
template<typename T >
static std::string	convert (T regex, convert_flag_type flags=convert_flag::none, bool *multiline=NULL)
	Convert a regex to an acceptable form, given the specified regex library signature `"[decls:]escapes[?+]"`, see reflex::convert. More...

Static Public Member Functions inherited from reflex::StdMatcher
template<typename T >
static std::string	convert (T regex, convert_flag_type flags=convert_flag::none, bool *multiline=NULL)
	Convert a regex to an acceptable form, given the specified regex library signature `"[decls:]escapes[?+]"`, see reflex::convert. More...

Additional Inherited Members
Public Types inherited from reflex::PatternMatcher< std::regex >
typedef std::regex	Pattern

Public Types inherited from reflex::AbstractMatcher
typedef AbstractMatcher::Iterator< AbstractMatcher >	iterator
	std::input_iterator for scanning, searching, and splitting input character sequences More...

typedef AbstractMatcher::Iterator< const AbstractMatcher >	const_iterator

Public Attributes inherited from reflex::AbstractMatcher
Operation	scan
	functor to scan input (to tokenize input) More...

Operation	find
	functor to search input More...

Operation	split
	functor to split input More...

Input	in
	input character sequence being matched by this matcher More...

Protected Types inherited from reflex::AbstractMatcher
typedef int	Method
	a method is one of Const::SCAN, Const::FIND, Const::SPLIT, Const::MATCH More...

Protected Member Functions inherited from reflex::StdMatcher
virtual size_t	match (Method method)
	The match method Const::SCAN, Const::FIND, Const::SPLIT, or Const::MATCH, implemented with std::regex. More...

void	new_itr (Method method)
	Create a new std::regex iterator to (continue to) advance over input. More...

Protected Member Functions inherited from reflex::PatternMatcher< std::regex >
	PatternMatcher (const Pattern pattern=NULL, const Input &input=Input(), const char opt=NULL)
	Construct a base abstract matcher from a pointer to a persistent pattern object (that is shared with this class) and an input character sequence. More...

	PatternMatcher (const Pattern &pattern, const Input &input=Input(), const char *opt=NULL)
	Construct a base abstract matcher from a persistent pattern object (that is shared with this class) and an input character sequence. More...

	PatternMatcher (const char pattern, const Input &input=Input(), const char opt=NULL)
	Construct a base abstract matcher from a regex pattern string and an input character sequence. More...

	PatternMatcher (const std::string &pattern, const Input &input=Input(), const char *opt=NULL)
	Construct a base abstract matcher from a regex pattern string and an input character sequence. More...

Protected Member Functions inherited from reflex::AbstractMatcher
virtual void	init (const char *opt=NULL)
	Initialize the base abstract matcher at construction. More...

bool	grow (size_t need=Const::BLOCK)
	Shift or expand the internal buffer when it is too small to accommodate more input, where the buffer size is doubled when needed, change cur_, pos_, end_, max_, ind_, buf_, bol_, lpb_, and txt_. More...

int	get ()
	Returns the next character read from the current input source. More...

void	reset_text ()
	Reset the matched text by removing the terminating \0 when applicable, which is needed to search for a new match. More...

void	set_current (size_t loc)
	Set the current position in the buffer for the next match. More...

void	set_current_and_peek_more (size_t loc)
	Set the current match position in the buffer and peek for more text, allows large buffer shifts that aren't pinned to txt_. More...

int	get_more ()
	Get the next character and grow the buffer to make more room if necessary. More...

int	peek_more ()
	Peek at the next character and grow the buffer to make more room if necessary. More...

Protected Attributes inherited from reflex::StdMatcher
std::regex_constants::match_flag_type	flg_
	std::regex match flags More...

std::cregex_iterator	itr_
	const std::regex iterator More...

std::cregex_iterator	fin_
	const std::regex iterator final end More...

size_t	grp_
	last group index for group_next_id() More...

Protected Attributes inherited from reflex::PatternMatcher< std::regex >
const Pattern *	pat_
	points to the pattern object used by the matcher More...

bool	del_
	true if PatternMatcher::pat_ was allocated and should be deleted More...

Protected Attributes inherited from reflex::AbstractMatcher
Option	opt_
	options for matcher engines More...

char *	buf_
	input character sequence buffer More...

char *	txt_
	points to the matched text in buffer AbstractMatcher::buf_ More...

size_t	len_
	size of the matched text More...

size_t	cap_
	nonzero capture index of an accepted match or zero More...

size_t	cur_
	next position in AbstractMatcher::buf_ to assign to AbstractMatcher::txt_ More...

size_t	pos_
	position in AbstractMatcher::buf_ after AbstractMatcher::txt_ More...

size_t	end_
	ending position of the input buffered in AbstractMatcher::buf_ More...

size_t	max_
	total buffer size and max position + 1 to fill More...

size_t	ind_
	current indent position More...

size_t	blk_
	block size for block-based input reading, as set by AbstractMatcher::buffer More...

int	got_
	last unsigned character we looked at (to determine anchors and boundaries) More...

int	chr_
	the character located at AbstractMatcher::txt_[AbstractMatcher::len_] More...

const char *	bol_
	begin of line pointer in buffer More...

Handler *	evh_
	event handler functor to invoke when buffer contents are shifted out More...

const char *	lpb_
	line pointer in buffer, updated when counting line numbers with lineno() More...

size_t	lno_
	line number count (cached) More...

const char *	cpb_
	column pointer in buffer, updated when counting column numbers with columno() More...

size_t	cno_
	column number count (cached) More...

size_t	num_
	character count of the input till bol_ More...

size_t	res_
	reserve bytes to keep in the buffer before bol_ when shifting, use only w/o evh_() set More...

bool	own_
	true if AbstractMatcher::buf_ was allocated and should be deleted More...

bool	eof_
	input has reached EOF More...

bool	mat_
	true if AbstractMatcher::matches() was successful More...

bool	cml_
	true when counting matching lines instead of line numbers More...

Detailed Description

std matcher engine class, extends reflex::StdMatcher for POSIX ERE std::regex::awk syntax and regex matching.

std::regex with POSIX ERE std::regex::awk.

Constructor & Destructor Documentation

reflex::StdPosixMatcher::StdPosixMatcher ( )

inline

Default constructor.

reflex::StdPosixMatcher::StdPosixMatcher	(	const char *	pattern,
		const Input &	input = `Input()`,
		const char *	opt = `NULL`
	)

inline

Construct a POSIX matcher engine from a string regex pattern and an input character sequence.

Parameters

pattern	a string regex for this matcher
input	input character sequence for this matcher
opt	option string of the form `(A\|N\|T(=[[:digit:]])?\|;)*`

reflex::StdPosixMatcher::StdPosixMatcher	(	const std::string &	pattern,
		const Input &	input = `Input()`,
		const char *	opt = `NULL`
	)

inline

Construct a POSIX ERE matcher engine from a string regex pattern and an input character sequence.

Parameters

pattern	a string regex for this matcher
input	input character sequence for this matcher
opt	option string of the form `(A\|N\|T(=[[:digit:]])?\|;)*`

reflex::StdPosixMatcher::StdPosixMatcher	(	const Pattern &	pattern,
		const Input &	input = `Input()`,
		const char *	opt = `NULL`
	)

inline

Construct a matcher engine from a std::regex pattern and an input character sequence.

Parameters

pattern	a std::regex for this matcher
input	input character sequence for this matcher
opt	option string of the form `(A\|N\|T(=[[:digit:]])?\|;)*`

Member Function Documentation

template<typename T >

static std::string reflex::StdPosixMatcher::convert	(	T	regex,
		convert_flag_type	flags = `convert_flag::none`,
		bool *	multiline = `NULL`
	)

inlinestatic

Convert a regex to an acceptable form, given the specified regex library signature "[decls:]escapes[?+]", see reflex::convert.

virtual PatternMatcher& reflex::StdPosixMatcher::pattern ( const Pattern & pattern )

inlinevirtual

Set the pattern to use with this matcher (the given pattern is shared and must be persistent), fails when a non-POSIX ERE std::regex is given.

Returns: this matcher.

Parameters

pattern std::regex for this matcher

Reimplemented from reflex::PatternMatcher< std::regex >.

virtual PatternMatcher& reflex::StdPosixMatcher::pattern ( const Pattern * pattern )

inlinevirtual

Set the pattern to use with this matcher (the given pattern is shared and must be persistent), fails when a non-POSIX ERE std::regex is given.

Returns: this matcher.

Parameters

pattern std::regex for this matcher

Reimplemented from reflex::PatternMatcher< std::regex >.

virtual PatternMatcher& reflex::StdPosixMatcher::pattern ( const char * pattern )

inlinevirtual

Set the pattern from a regex string to use with this matcher.

Returns: this matcher.

Parameters

pattern regex string to instantiate internal pattern object

Reimplemented from reflex::StdMatcher.

virtual PatternMatcher& reflex::StdPosixMatcher::pattern ( const std::string & pattern )

inlinevirtual

Set the pattern from a regex string to use with this matcher.

Returns: this matcher.

Parameters

pattern regex string to instantiate internal pattern object

Reimplemented from reflex::StdMatcher.

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

stdmatcher.h

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation