On Thu, 20 Feb 2025 at 13:48, Phil Bouchard via Std-Proposals <
std-proposals_at_[hidden]> wrote:

> Greetings,
>
> Seems to me regex over istreams would be quite useful. Here's an
> inefficient implementation:
>
>
> inline std::istream& operator >> (std::istream& in, std::string & v)
> {
> static const std::regex string_regex(R"(^\"(.*?)\"$)");
>

This uses a hardcoded regular expression to extract from the stream. That
doesn't seem very useful. Surely you would want to be able to customize the
regex? What API are you proposing for that?


> std::smatch match;
>
> std::string x;
>
> for (x += in.get(); in; x += in.get())
> if (std::regex_match(x, match, string_regex))
> {
> v = match[1].str();
>
> return in;
> }
>
> throw std::invalid_argument("Parse error.");
> }
>
> Is there any interests in such implementation?
>
>
> Regards,
> --
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