File Coverage

src/panda/protocol/websocket/Utf8Checker.h

Criterion	Covered	Total	%
statement	11	11	100.0
branch	5	6	83.3
condition			n/a
subroutine			n/a
pod			n/a
total	16	17	94.1

#pragma once
#include
#include

namespace panda { namespace protocol { namespace websocket {

// Incremental UTF8 validator. Based on boost::beast

struct Utf8Checker {
    void reset () {
        need_ = 0;
        p_    = cp_;
    }

    bool finish () {
        auto const success = need_ == 0;
        reset();
        return success;
    }

    bool write (const string&);

    bool write (const std::vector& v) {
        for (const auto& s : v) if (!write(s)) return false;
        return true;
    }

private:
    std::uint8_t  cp_[4];      // a temp buffer for the code point
    size_t        need_ = 0;   // chars we need to finish the code point
    std::uint8_t* p_    = cp_; // current position in temp buffer
};

}}}