Tools.h++ Manual

104011 Tandem Computers Incorporated 21-71

Public member functions

size_t index(const RWCString& str, size_t* len, size_t

start=0) const;

Returns the index of the ﬁrst instance in the string

str

that matches the

regular expression compiled in self, or

RW_NPOS

if there is no such match. The

search starts at index

start

. The length of the matching pattern is returned in

the variable pointed to by

len

. If an invalid regular expression is used for the

search, an exception of type

RWInternalErr

will be thrown.

Note – This member function is relatively clumsy to use—class

RWCString

offers a better interface to regular expression searches.

statVal status();

Returns the status of the regular expression:

statVal

Meaning

RWCRegexp::OK

No errors

RWCRegexp::ILLEGAL

Pattern was illegal

RWCRegexp::TOOLONG

Pattern exceeded maximum length