debian man page for buffer_get_token_pred

buffer_get_token_pred(3)				     Library Functions Manual					  buffer_get_token_pred(3)

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)