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lokinet/llarp/buffer.cpp

26 lines
504 B
C++

#include <llarp/buffer.h>
#include <cstring>
extern "C" {
size_t llarp_buffer_size_left(llarp_buffer_t *buff) {
auto diff = buff->cur - buff->base;
if (diff < 0) {
return 0;
} else if (diff > buff->sz)
return 0;
else
return buff->sz - diff;
}
bool llarp_buffer_write(llarp_buffer_t *buff, const void *data, size_t sz) {
size_t left = llarp_buffer_size_left(buff);
if (sz > left) {
return false;
}
std::memcpy(buff->cur, data, sz);
buff->cur += sz;
return true;
}
}