buffer_get_token_sa - read token from buffer

       buffer_get_token_sa  appends  data  from the b to sa until one of the delimiters in charset is found, NOT
       overwriting the previous content of sa.  That delimiter is also appended to sa.

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

       buffer_get_token_sa - read token from buffer

       buffer_get_token_sa  appends  instead  of  overwriting  so  it can be used on non-blocking sockets (these
       signal error and set errno to EAGAIN; in this case you can simply  call  buffer_get_token_sa  again  when
       select or poll indicate more data is available).

       -1 on error (setting errno), 0 on EOF, 1 when successful.

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

                                                                                          buffer_get_token_sa(3)

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

       int buffer_get_token_sa(buffer* b,stralloc* sa,
                           const char* charset,size_t setlen);