Method copyBufferSafe

FluidNC/src/WebUI/WebClient.cpp:93–112

    }

    size_t WebClient::copyBufferSafe(uint8_t* dest_buffer, size_t maxLen, size_t total) {
        xBufferLock.lock();
        if (_buflen > 0) {
            int bytes = min(_buflen, maxLen);
            memcpy(dest_buffer, _buffer, bytes);
            memmove(_buffer, &_buffer[bytes], _buflen - bytes);
            _buflen -= bytes;
            xBufferLock.unlock();
            return bytes;
        } else if (done) {
            free(_buffer);
            _buffer    = nullptr;
            _allocsize = 0;
            _buflen    = 0;
            xBufferLock.unlock();
            return 0;
        }
        xBufferLock.unlock();
        return RESPONSE_TRY_AGAIN;
    }

    void WebClient::executeCommandBackground(const char* cmd) {
        xBufferLock.lock();