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|
%%{
machine common;
action read_char {
dd("reading %c", *p);
}
CR = "\r";
LF = "\n";
CRLF = CR LF; # $read_char;
action finalize {
dd("done!");
done = 1;
}
action read_size {
ctx->chunk_size *= 10;
ctx->chunk_size += *p - '0';
dd("read chunk size: %d", (int) ctx->chunk_size);
}
action start_reading_size {
dd("start reading chunk size");
ctx->chunk_bytes_read = 0;
ctx->chunk_size = 0;
}
action start_reading_data {
dd("start reading data");
ctx->chunk_bytes_read = 0;
}
action test_len {
#if 0
fprintf(stderr, "test chunk len: %d < %d\n",
(int) ctx->chunk_bytes_read, (int) ctx->chunk_size),
#endif
ctx->chunk_bytes_read++ < ctx->chunk_size
}
chunk_size = ([1-9] digit*) >start_reading_size $read_size
;
chunk_data_octet = any when test_len
;
chunk_data = chunk_data_octet+;
action read_chunk {
ctx->chunks_read++;
dd("have read chunk %d, %.*s", (int) ctx->chunks_read,
(int) (p - (signed char *) b->last), (signed char *) b->last);
}
action check_data_complete {
#if 0
fprintf(stderr,
"check_data_complete: chunk bytes read: %d, chunk size: %d\n",
(int) ctx->chunk_bytes_read, (int) ctx->chunk_size),
#endif
ctx->chunk_bytes_read == ctx->chunk_size + 1
}
trailer = CRLF @read_chunk
;
chunk = "$" "0"+ CRLF trailer
| "$-" digit+ trailer
| "$" chunk_size CRLF chunk_data CR when check_data_complete LF @read_chunk
;
single_line_reply = [:\+\-] (any* -- CRLF) CRLF;
}%%
|
