buffer_getn(3)buffer_getn(3)NAMEbuffer_getn - read binary data from buffer
SYNTAX
#include <buffer.h>
ssize_t buffer_getn(buffer* b,char* x,size_t len);
DESCRIPTIONbuffer_getn copies data to x[0], x[1], ..., x[len-1] from the buffer,
calling buffer_feed as needed, and returns len.
If a read error occurs, buffer_getn returns -1 and sets errno appropri‐
ately. It may then have put any number between 0 and len in the buf‐
fer, you can't tell. That makes this function only useful if you don't
care when an error occurs. Use buffer_get otherwise.
If the read operation signals end-of-file before len bytes were read,
buffer_getn returns the number of bytes read from the buffer before
end-of-file.
SEE ALSObuffer_init(3), buffer_get(3), buffer(3)buffer_getn(3)
