Function read_cmdline_oneline

src/os/linux/json_export.cpp:24–39

Same cmdline-as-string reader as csv_export.cpp. Could be hoisted to task_files.h, but keeping it local avoids cross-file coupling for a 12-line helper.

// task_files.h, but keeping it local avoids cross-file coupling for a
// 12-line helper.
std::string read_cmdline_oneline(const Engine& eng, const Process& p) {
    if (p.mm == 0) return fmt::format("[{}]", p.comm);
    ByteBuf raw;
    try { raw = gen_cmdline(eng.phys(), eng.isf(), eng.kernel(), p); }
    catch (...) { return ""; }
    if (raw.empty()) return "";
    std::string s;
    s.reserve(raw.size());
    for (u8 c : raw) {
        if (c == 0) s.push_back(' ');
        else if (c < 0x20 || c == 0x7F) s.push_back('?');
        else s.push_back((char)c);
    }
    while (!s.empty() && s.back() == ' ') s.pop_back();
    return s;
}

std::string fmt_addr(const SocketInfo& s, const std::array<u8,16>& a) {
    if (s.family == SocketInfo::AF_INET6)