Function lower_ascii

app/server/multipart.cpp:10–15

namespace {

std::string lower_ascii(std::string value) {
    for (char & ch : value) {
        ch = static_cast<char>(std::tolower(static_cast<unsigned char>(ch)));
    }
    return value;
}

std::string trim(std::string value) {
    auto is_space = [](unsigned char ch) { return std::isspace(ch) != 0; };