+struct APT_HIDDEN simple_buffer { /*{{{*/
+ static constexpr size_t buffersize_max = 4096;
+ unsigned long long bufferstart = 0;
+ unsigned long long bufferend = 0;
+ char buffer[buffersize_max];
+
+ char *get() { return buffer + bufferstart; }
+ bool empty() { return bufferend <= bufferstart; }
+ unsigned long long size() { return bufferend-bufferstart; }
+ void reset() { bufferend = bufferstart = 0; }
+ ssize_t read(void *to, unsigned long long requested_size) APT_MUSTCHECK
+ {
+ if (size() < requested_size)
+ requested_size = size();
+ memcpy(to, buffer + bufferstart, requested_size);
+ bufferstart += requested_size;
+ if (bufferstart == bufferend)
+ bufferstart = bufferend = 0;
+ return requested_size;
+ }
+};
+ /*}}}*/
+