Class FileSink

common/script/zip_api.cpp:62–66

    // ---- stdio-backed TransferProto seams --------------------------------

    struct FileSink : TransferProto::ByteSink {
        FILE* f;
        explicit FileSink(FILE* file) : f(file) {}
        bool sendAll(const void* data, size_t len) override { return fwrite(data, 1, len, f) == len; }
    };

    struct StdFileReader : TransferProto::FileReader {
        FILE* f = nullptr;