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RE Class Reference

Regex wrapper class. More...

List of all members.

Public Methods
	RE (const string &pattern)
	Constructor.
bool	match (const string &s)
string	get_matched (const int i)
const int *	get_span (const int i)
int	get_nsub ()

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Detailed Description

Regex wrapper class.

RE wraps the regex library by Henry Spencer, which is included in the aglib package.

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Constructor & Destructor Documentation

RE::RE (  const string &    pattern )

Constructor. Compile the given "pattern"(a regular expression) into internal form for matches which will be performed later on.

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Member Function Documentation

string RE::get_matched (  const int    i )

Get i-th matched substring. Parameters: i  The index of substring to get. Returns: i-th substring Calling this after a failed match will cause GetError exception. Out-of-range error detected and GetError will be thrown.

int RE::get_nsub (    )

Returns: The number of subexpressions in the expression

const int* RE::get_span (  const int    i )

Get the start and end index of i-th substring relative to the whole string. Parameters: i  The index of target substring. Returns: Array(pair) of integers. First one is the start index, and second one, the end index. The values in the array will be updated after another get_span() call.

bool RE::match (  const string &    s )

Match given string "s" with the compiled expression. "True" is returned for "match success", "false" for "match failed." The exception MatchError doesn't mean "match failed."

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