FXRex

class FXRex

FXRex is a regular expression class implementing a NFA matcher.

Public Methods

[more] FXRex()
Construct empty regular expression object
[more] FXRex(const FXRex& orig)
Copy regular expression object
[more] FXRex(const FXchar* pattern, FXint mode=REX_NORMAL, FXRexError* error=NULL)
Compile expression from pattern; if error is not NULL, error code is returned
[more] FXRex(const FXString& pattern, FXint mode=REX_NORMAL, FXRexError* error=NULL)
Compile expression from pattern; if error is not NULL, error code is returned
[more]FXRex& operator=(const FXRex& orig)
Assign another regular expression to this one
[more]FXbool empty() const
See if regular expression is empty; the regular expression will be empty when it is unable to parse a pattern due to a syntax error
[more]FXRexError parse(const FXchar* pattern, FXint mode=REX_NORMAL)
Parse pattern, return error code if syntax error is found
[more]FXRexError parse(const FXString& pattern, FXint mode=REX_NORMAL)
Parse pattern, return error code if syntax error is found
[more]FXbool match(const FXchar* string, FXint len, FXint* beg=NULL, FXint* end=NULL, FXint mode=REX_FORWARD, FXint npar=1, FXint fm=0, FXint to=2147483647) const
Match a subject string of length len, returning TRUE if a match is found and FALSE otherwise.
[more]FXbool match(const FXString& string, FXint* beg=NULL, FXint* end=NULL, FXint mode=REX_FORWARD, FXint npar=1, FXint fm=0, FXint to=2147483647) const
Search for match in a string
[more]static FXString substitute(const FXchar* string, FXint len, FXint* beg, FXint* end, const FXString& replace, FXint npar=1)
After performing a regular expression match with capturing parentheses, a substitution string is build from the replace string, where where "&" is replaced by the entire matched pattern, and "\1" through "\9" are replaced by captured expressions.
[more]static FXString substitute(const FXString& string, FXint* beg, FXint* end, const FXString& replace, FXint npar=1)
Return substitution string
[more]static const FXchar* getError(FXRexError err)
Returns error code for given error
[more] ~FXRex()
Delete


Documentation

FXRex is a regular expression class implementing a NFA matcher. It supports capturing parentheses, non-capturing parentheses, positive or negative lookahead, backreferences, case-insensitive matching, counted repetitions, lazy or greedy matches, and PERL-like matching operators. The subject string may be scanned forwards or backwards, and may contain any of 256 possible character values.

When parsing a regular expression pattern, the mode parameter is the bitwise OR of a set of flags and affects the match algorithm. Passing the flag REX_CAPTURE enables capturing parentheses and back references. The flag REX_ICASE enables case-insensitive matching. When the flag REX_NEWLINE is passed, newlines are treated like normal characters; otherwise, newline is NOT matched except when explicitly part of a character class. The flag REX_VERBATIM disables all special character interpretation.

When matching a compiled pattern, the mode parameter is the bitwise OR of a set of flags that affects how the match is performed. Passing the flag REX_BACKWARD causes the match to proceed backwards through the subject string. Passing the flags REX_NOT_BOL and/or REX_NOT_EOL causes the begin and end of the subject string NOT to be considered a line start or line end. The flag REX_NOT_EMPTY causes a match to fail if the empty string was matched.

o FXRex()
Construct empty regular expression object

o FXRex(const FXRex& orig)
Copy regular expression object

o FXRex(const FXchar* pattern, FXint mode=REX_NORMAL, FXRexError* error=NULL)
Compile expression from pattern; if error is not NULL, error code is returned

o FXRex(const FXString& pattern, FXint mode=REX_NORMAL, FXRexError* error=NULL)
Compile expression from pattern; if error is not NULL, error code is returned

oFXRex& operator=(const FXRex& orig)
Assign another regular expression to this one

oFXbool empty() const
See if regular expression is empty; the regular expression will be empty when it is unable to parse a pattern due to a syntax error

oFXRexError parse(const FXchar* pattern, FXint mode=REX_NORMAL)
Parse pattern, return error code if syntax error is found

oFXRexError parse(const FXString& pattern, FXint mode=REX_NORMAL)
Parse pattern, return error code if syntax error is found

oFXbool match(const FXchar* string, FXint len, FXint* beg=NULL, FXint* end=NULL, FXint mode=REX_FORWARD, FXint npar=1, FXint fm=0, FXint to=2147483647) const
Match a subject string of length len, returning TRUE if a match is found and FALSE otherwise. The entire pattern is captured in beg[0] and end[0], where beg[0] refers to the position of the first matched character and end[0] refers to the position after the last matched character. Sub expressions from capturing parenthesis i are returned in beg[i] and end[i].

oFXbool match(const FXString& string, FXint* beg=NULL, FXint* end=NULL, FXint mode=REX_FORWARD, FXint npar=1, FXint fm=0, FXint to=2147483647) const
Search for match in a string

ostatic FXString substitute(const FXchar* string, FXint len, FXint* beg, FXint* end, const FXString& replace, FXint npar=1)
After performing a regular expression match with capturing parentheses, a substitution string is build from the replace string, where where "&" is replaced by the entire matched pattern, and "\1" through "\9" are replaced by captured expressions. The original source string and its length, and the match arrays beg and end must be passed.

ostatic FXString substitute(const FXString& string, FXint* beg, FXint* end, const FXString& replace, FXint npar=1)
Return substitution string

ostatic const FXchar* getError(FXRexError err)
Returns error code for given error

o ~FXRex()
Delete


This class has no child classes.
Friends:
FXbool operator==(const FXRex &r1,const FXRex &r2)
FXbool operator!=(const FXRex &r1,const FXRex &r2)
FXStream& operator<<(FXStream& store,const FXRex& s)
FXStream& operator>>(FXStream& store,FXRex& s)

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