/*
* State of reading a block and trying to generate its sum.
*/
static rs_result
rs_sig_s_generate(rs_job_t *job)
{
rs_result result;
size_t len;
void *block;
/* must get a whole block, otherwise try again */
len = job->block_len;
result = rs_scoop_read(job, len, &block);
/* unless we're near eof, in which case we'll accept
* whatever's in there */
if ((result == RS_BLOCKED && rs_job_input_is_ending(job))) {
result = rs_scoop_read_rest(job, &len, &block);
} else if (result == RS_INPUT_ENDED) {
return RS_DONE;
} else if (result != RS_DONE) {
rs_trace("generate stopped: %s", rs_strerror(result));
return result;
}
rs_trace("got %ld byte block", (long) len);
return rs_sig_do_block(job, block, len);
}
/**
* \brief State function that does a slack delta containing only
* literal data to recreate the input.
*/
static rs_result rs_delta_s_slack(rs_job_t *job)
{
rs_buffers_t * const stream = job->stream;
size_t avail = stream->avail_in;
if (avail) {
rs_trace("emit slack delta for " PRINTF_FORMAT_U64
" available bytes", PRINTF_CAST_U64(avail));
rs_emit_literal_cmd(job, avail);
rs_tube_copy(job, avail);
return RS_RUNNING;
} else {
if (rs_job_input_is_ending(job)) {
job->statefn = rs_delta_s_end;
return RS_RUNNING;
} else {
return RS_BLOCKED;
}
}
}
