Function is_valid_char

src/brpc/uri.cpp:107–115

valid characters in URL https://datatracker.ietf.org/doc/html/rfc3986#section-2.1 https://datatracker.ietf.org/doc/html/rfc3986#section-2.3 https://datatracker.ietf.org/doc/html/rfc3986#section-2.4 space is not allowed by rfc3986, but allowed by brpc

// https://datatracker.ietf.org/doc/html/rfc3986#section-2.4
// space is not allowed by rfc3986, but allowed by brpc
static bool is_valid_char(char c) {
    static const std::unordered_set<char> other_valid_char = {
        ':', '/', '?', '#', '[', ']', '@', '!', '$', '&',
        '\'', '(', ')', '*', '+', ',', ';', '=', '-', '.',
        '_', '~', '%', ' '
    };

    return (isalnum(c) || other_valid_char.count(c));
}

static bool is_all_spaces(const char* p) {
    for (; *p == ' '; ++p) {}