NAME

       buffer_get_new_token_sa_pred - read token from buffer

SYNTAX

       #include <libowfat/stralloc.h>
       #include <libowfat/buffer.h>

       int buffer_get_new_token_sa_pred(buffer* b,stralloc* sa,
                        int (*predicate)(stralloc* * sa));

DESCRIPTION

       buffer_get_token_sa_pred copies data from b to sa until predicate(sa) returns 1 or -1.

       If  predicate returns 1 once a '\n' was read, that new-line character is still appended to
       sa -- use stralloc_chop or stralloc_chomp to get rid of it.  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).

       If  reading  from  the  buffer  or  allocating  memory fails, buffer_get_new_token_sa_pred
       returns -1 and sets errno appropriately.  At that point sa may already contain  a  partial
       token.

       On success, buffer_get_new_token_sa_pred returns 0.

       If you want to read from a non-blocking socket, use buffer_get_token_sa_pred instead.

SEE ALSO

       buffer_getline_sa(3), buffer_get_token(3), buffer(3)

                                                                  buffer_get_new_token_sa_pred(3)