4 let input_file : string option ref = ref None
5 let output_file : string option ref = ref None
8 let compose = ref false
9 let parallel = ref false
11 let set_string_option r s = r := Some s
15 " write the number of results only";
16 "--count", Set count, " ";
18 " display timing and various statistics";
19 "--stats", Set stats, " ";
20 "-d", String (set_string_option input_file),
21 " specify the input document file [default stdin]";
22 "--doc", String (set_string_option input_file), " ";
23 "-o", String (set_string_option output_file),
24 " specify the output file [default stdout]";
25 "--out", String (set_string_option output_file), " ";
27 " compose queries: each query is applied to the results of the \
28 previous one [default run all queries from the root node]";
29 "--compose", Set compose, " ";
31 " run all queries in parallel [default run all queries \
33 "--parallel", Set parallel, " ";
37 Printf.sprintf "usage: %s [options] query [query ... query]" Sys.argv.(0)
39 let usage () = usage specs usage_msg
42 parse specs (fun q -> queries := q :: !queries ) usage_msg;
44 [] -> raise (Arg.Bad "missing query")
45 | l -> queries := List.rev l