31 Regular expressions library [re]
31.11 Regular expression algorithms [re.alg]
template <class OutputIterator, class BidirectionalIterator,
class traits, class charT, class ST, class SA>
OutputIterator
regex_replace(OutputIterator out,
BidirectionalIterator first, BidirectionalIterator last,
const basic_regex<charT, traits>& e,
const basic_string<charT, ST, SA>& fmt,
regex_constants::match_flag_type flags = regex_constants::match_default);
template <class OutputIterator, class BidirectionalIterator, class traits, class charT>
OutputIterator
regex_replace(OutputIterator out,
BidirectionalIterator first, BidirectionalIterator last,
const basic_regex<charT, traits>& e,
const charT* fmt,
regex_constants::match_flag_type flags = regex_constants::match_default);
Effects:
Constructs a
regex_iterator object
i
as if by
regex_iterator<BidirectionalIterator, charT, traits> i(first, last, e, flags)
and uses
i to enumerate through all
of the matches
m of type
match_results<BidirectionalIterator>
that occur within the sequence
[first, last). If no such
matches are found and
!(flags & regex_constants::format_no_copy), then calls
out = copy(first, last, out)
If any matches are found then, for each such match:
If
!(flags & regex_constants::format_no_copy), calls
out = copy(m.prefix().first, m.prefix().second, out)
Then calls
out = m.format(out, fmt, flags)
for the first form of the function and
out = m.format(out, fmt, fmt + char_traits<charT>::length(fmt), flags)
for the second
.
Finally, if such a match
is found and
!(flags & regex_constants::format_no_copy),
calls
out = copy(last_m.suffix().first, last_m.suffix().second, out)
where
last_m is a copy of the last match
found
.If
flags & regex_constants::format_first_only
is nonzero, then only the first match found is replaced
.template <class traits, class charT, class ST, class SA, class FST, class FSA>
basic_string<charT, ST, SA>
regex_replace(const basic_string<charT, ST, SA>& s,
const basic_regex<charT, traits>& e,
const basic_string<charT, FST, FSA>& fmt,
regex_constants::match_flag_type flags = regex_constants::match_default);
template <class traits, class charT, class ST, class SA>
basic_string<charT, ST, SA>
regex_replace(const basic_string<charT, ST, SA>& s,
const basic_regex<charT, traits>& e,
const charT* fmt,
regex_constants::match_flag_type flags = regex_constants::match_default);
Effects: Constructs an empty string
result of
type
basic_string<charT, ST, SA> and calls:
regex_replace(back_inserter(result), s.begin(), s.end(), e, fmt, flags);
template <class traits, class charT, class ST, class SA>
basic_string<charT>
regex_replace(const charT* s,
const basic_regex<charT, traits>& e,
const basic_string<charT, ST, SA>& fmt,
regex_constants::match_flag_type flags = regex_constants::match_default);
template <class traits, class charT>
basic_string<charT>
regex_replace(const charT* s,
const basic_regex<charT, traits>& e,
const charT* fmt,
regex_constants::match_flag_type flags = regex_constants::match_default);
Effects: Constructs an empty string
result of
type
basic_string<charT> and calls:
regex_replace(back_inserter(result), s, s + char_traits<charT>::length(s), e, fmt, flags);