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buffer_get_token_pred(3)                    DragonFly Library Functions Manual

NAME
       buffer_get_token_pred - read token from buffer

SYNTAX
       #include <buffer.h>

       ssize_t buffer_get_token_pred(buffer* b,char* x,size_t len,
                        int (*predicate)(const char* s,size_t len));

DESCRIPTION
       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).

SEE ALSO
       buffer_init(3), buffer_feed(3), buffer_peek(3), buffer_seek(3),
       buffer(3)

                                                      buffer_get_token_pred(3)