std.regex with multiple matches

[Dmitry Olshansky]

On 21.04.2011 21:43, David Gileadi wrote:
> I was using std.regex yesterday, matching a regular expression against 
> a string with the "g" flag to find multiple matches.  As the example 
> from the docs shows (BTW I think the example may be wrong; I think it 
> needs the "g" flag added to the regex call), you can do a foreach loop 
> on the matches like:
>
> foreach(m; match("abcabcabab", regex("ab")))
> {
>     writefln("%s[%s]%s", m.pre, m.hit, m.post);
> }
>
> Each match "m" is a RegexMatch, which includes .pre, .hit, and .post 
> properties to return ranges of everything before, inside, and after 
> the match.
>
> However what I really wanted was a way to get the range between 
> matches, i.e. since I had multiple matches I wanted something like 
> m.upToNextMatch.
I might be wrong but I think that you are looking for std.regex.splitter:

auto  s1 =", abc, de,  fg, hi,";
assert(equal(splitter(s1, regex(", *")),
     ["","abc","de","fg","hi",""][]))

Simply put it gets you range of slices of input separated by regex matches.
>
> Since I'm not very familiar with ranges, am I missing some obvious way 
> of doing this with the existing .pre, .hit and .post properties?
>
> -Dave


-- 
Dmitry Olshansky