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open Operators
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open Builtin_defs
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open Ident
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let variant_type_ascii l =
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List.fold_left
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(fun accu (l,t) ->
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Types.cup accu
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(Types.times
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(Types.cons (Types.atom (Atoms.atom (Atoms.V.mk_ascii l))))
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(Types.cons t)))
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Types.empty
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l
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let record_type_ascii l =
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Types.record_fields (false,
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(LabelMap.from_list_disj
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(List.map (fun (l,t) -> Value.label_ascii l, Types.cons t) l)))
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module Reader = struct
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let b = Buffer.create 10240
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let buf = String.create 1024
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let rec read_loop ic =
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let i = input ic buf 0 (String.length buf) in
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if i > 0 then (Buffer.add_string b (String.sub buf 0 i); read_loop ic)
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let ic ic =
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read_loop ic;
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let s = Buffer.contents b in
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Buffer.clear b;
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s
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end
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let run_process cmd =
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let (sout,sin,serr) as h = Unix.open_process_full cmd (Unix.environment()) in
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close_out sin;
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let sout = Reader.ic sout in
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let serr = Reader.ic serr in
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sout,serr, Unix.close_process_full h
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let process_status = function
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| Unix.WEXITED n ->
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Value.Pair (Value.atom_ascii "exited", Value.ocaml2cduce_int n)
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| Unix.WSTOPPED n ->
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Value.Pair (Value.atom_ascii "stopped", Value.ocaml2cduce_int n)
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| Unix.WSIGNALED n ->
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Value.Pair (Value.atom_ascii "signaled", Value.ocaml2cduce_int n)
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let system_out =
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record_type_ascii [
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"stdout", string_latin1;
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"stderr", string_latin1;
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"status", variant_type_ascii [
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"exited", int;
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"stopped", int;
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"signaled", int
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]
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]
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let () = register_fun "system" string_latin1 system_out
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(fun v ->
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Location.protect_op "system";
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let cmd = Value.get_string_latin1 v in
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let sout,serr,ps = run_process cmd in
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Value.record_ascii [
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"stdout", Value.string_latin1 sout;
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"stderr", Value.string_latin1 serr;
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"status", process_status ps
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]
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)
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let () = register_fun "exit" byte_int Types.empty
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(fun v -> Location.protect_op "exit"; exit (Value.cduce2ocaml_int v))
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let exn_not_found =
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Value.CDuceExn (Value.Atom (Atoms.V.mk_ascii "Not_found"))
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let () = register_fun "getenv" string_latin1 string_latin1
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(fun e ->
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Location.protect_op "getenv";
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let var = Value.get_string_latin1 e in
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try Value.string_latin1 (Sys.getenv var)
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with Not_found -> raise exn_not_found);;
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let () = register_fun "argv" nil (Sequence.star string_latin1)
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(fun e ->
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Location.protect_op "argv";
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!Builtin.argv);;
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