Function RemoveLastComponent

src/brpc/restful.cpp:359–372

Remove last component from the (normalized) path: Say /A/B/C/ -> /A/B/ Notice that /A/ is modified to / and returns true.

// Say /A/B/C/ -> /A/B/
// Notice that /A/ is modified to / and returns true.
static bool RemoveLastComponent(butil::StringPiece* path) {
    if (path->empty()) {
        return false;
    }
    if (path->back() == '/') {
        path->remove_suffix(1);
    }
    size_t slash_pos = path->rfind('/');
    if (slash_pos == std::string::npos) {
        return false;
    }
    path->remove_suffix(path->size() - slash_pos - 1); // keep the slash
    return true;
}

// Normalized as /A/B/C/
static std::string NormalizeSlashes(const butil::StringPiece& path) {