| buffer_get_token_pred(3) | Library Functions Manual | buffer_get_token_pred(3) |
buffer_get_token_pred - read token from buffer
#include <libowfat/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)