buffer_get_token_pred - read token from buffer
#include <buffer.h>
ssize_t
buffer_get_token_pred(buffer*
b,char*
x,size_t
len,
int (*
predicate)(const char*
s,size_t
len));
buffer_get_token_pred copies data from
b to
x[0],
x[1],
...,
x[
len-1] until
len bytes have been read or
predicate called on the destination string returns nonzero.
predicate can also return 0 (indicating further input is required to
complete the token) or -1 (abort and return -1; use this if
predicate
wants to enfore a maximum message size or does timeout handling or detects a
malformed message).
buffer_get_token_pred returns the number of bytes copied or -1 on error (setting
errno appropriately).
buffer_init(3), buffer_feed(3), buffer_peek(3), buffer_seek(3), buffer(3)