open Camlp4.PreCast
open Ast
+open CalendarLib
+
open Big_int
+open Unix
open Printf
module StringMap = struct
let values m = fold (fun _ v vs -> v :: vs) m []
end
+module IntMap = struct
+ include Map.Make (struct type t = int let compare = compare end)
+ let keys m = fold (fun k _ ks -> k :: ks) m []
+ let values m = fold (fun _ v vs -> v :: vs) m []
+end
+
+module BigIntMap = struct
+ include Map.Make (struct type t = big_int let compare = compare_big_int end)
+ let keys m = fold (fun k _ ks -> k :: ks) m []
+ let values m = fold (fun _ v vs -> v :: vs) m []
+end
+
module StringSet = Set.Make (String)
+let (//) = Filename.concat
+
+let isalpha = function 'a'..'z' | 'A'..'Z' -> true | _ -> false
+let isalnum = function 'a'..'z' | 'A'..'Z' | '0'..'9' -> true | _ -> false
+
let rec filter_map f = function
| [] -> []
| x :: xs ->
| Some y -> y :: filter_map f xs
| None -> filter_map f xs
-type whenexpr =
- | Expr_bool of bool
- | Expr_str of string
- | Expr_int of Big_int.big_int
- | Expr_float of float
- | Expr_var of string
- | Expr_and of whenexpr * whenexpr
- | Expr_or of whenexpr * whenexpr
- | Expr_eq of whenexpr * whenexpr
- | Expr_not of whenexpr
- | Expr_changes of string
-
-(* This internal type is used during conversion of the OCaml AST
- * to the whenexpr type.
- *)
-type whenexpr_int =
- | IExpr_bool of bool
- | IExpr_str of string
- | IExpr_int of Big_int.big_int
- | IExpr_float of float
- | IExpr_var of string
- | IExpr_app of string * whenexpr_int list
-
-(* Note that days are not necessarily expressible in seconds (because
- * of leap seconds), months are not expressible in days (because months
- * have different lengths), and years are not expressible in days
- * (because of leap days) although we could save a case here by
- * expressing years in months.
- *)
-type periodexpr =
- | Every_seconds of int
- | Every_days of int
- | Every_months of int
- | Every_years of int
-
-type shell_script = {
- sh_loc : Loc.t;
- sh_script : string;
-}
-
-type variable =
- | T_bool of bool
- | T_string of string
- | T_int of big_int
- | T_float of float
-
-let variable_of_rpc = function
- | `bool_t b -> T_bool b
- | `string_t s -> T_string s
- | `int_t i -> T_int (big_int_of_string i)
- | `float_t f -> T_float f
-
-let rpc_of_variable = function
- | T_bool b -> `bool_t b
- | T_string s -> `string_t s
- | T_int i -> `int_t (string_of_big_int i)
- | T_float f -> `float_t f
-
-type variables = variable StringMap.t
-
-type job_private = {
- (* The result of the previous evaluation. This is used for
- * implementing edge-triggering, since we only trigger the job to run
- * when the state changes from false -> true.
- *)
- job_prev_eval_state : bool;
-
- (* When the job {i ran} last time, we take a copy of the variables.
- * This allows us to implement the 'changes' operator.
- *)
- job_prev_variables : variables;
-}
-
-let no_job_private =
- { job_prev_eval_state = false; job_prev_variables = StringMap.empty }
-
-type job_cond =
- | When_job of whenexpr
- | Every_job of periodexpr
-
-type job = {
- job_loc : Loc.t;
- job_name : string;
- job_cond : job_cond;
- job_script : shell_script;
- job_private : job_private;
-}
-
-let rec expr_of_ast _loc ast =
- expr_of_iexpr _loc (iexpr_of_ast _loc ast)
-
-and iexpr_of_ast _loc = function
- | ExId (_, IdLid (_, "true")) -> IExpr_bool true
- | ExId (_, IdLid (_, "false")) -> IExpr_bool false
- | ExStr (_, str) -> IExpr_str str
- | ExInt (_, i) -> IExpr_int (big_int_of_string i) (* XXX too large? *)
- | ExFlo (_, f) -> IExpr_float (float_of_string f)
- | ExId (_, IdLid (_, id)) -> IExpr_var id
-
- (* In the OCaml AST, functions are curried right to left, so we
- * must uncurry to get the list of arguments.
- *)
- | ExApp (_, left_tree, right_arg) ->
- let f, left_args = uncurry_app_tree _loc left_tree in
- IExpr_app (f, List.rev_map (iexpr_of_ast _loc) (right_arg :: left_args))
-
- | e ->
- (* https://groups.google.com/group/fa.caml/browse_thread/thread/f35452d085654bd6 *)
- eprintf "expr_of_ast: invalid expression: %!";
- let e = Ast.StExp (_loc, e) in
- Printers.OCaml.print_implem ~output_file:"/dev/stderr" e;
-
- invalid_arg (sprintf "%s: invalid expression" (Loc.to_string _loc))
-
-and uncurry_app_tree _loc = function
- | ExId (_, IdLid (_, f)) -> f, []
- | ExApp (_, left_tree, right_arg) ->
- let f, left_args = uncurry_app_tree _loc left_tree in
- f, (right_arg :: left_args)
- | e ->
- eprintf "uncurry_app_tree: invalid expression: %!";
- let e = Ast.StExp (_loc, e) in
- Printers.OCaml.print_implem ~output_file:"/dev/stderr" e;
-
- invalid_arg (sprintf "%s: invalid expression" (Loc.to_string _loc))
-
-and expr_of_iexpr _loc = function
- | IExpr_bool b -> Expr_bool b
- | IExpr_str s -> Expr_str s
- | IExpr_int i -> Expr_int i
- | IExpr_float f -> Expr_float f
- | IExpr_var v -> Expr_var v
-
- | IExpr_app ("&&", exprs) ->
- (match exprs with
- | [e1; e2] -> Expr_and (expr_of_iexpr _loc e1, expr_of_iexpr _loc e2)
- | _ ->
- invalid_arg (sprintf "%s: && operator must be applied to two parameters"
- (Loc.to_string _loc))
- )
-
- | IExpr_app ("||", exprs) ->
- (match exprs with
- | [e1; e2] -> Expr_or (expr_of_iexpr _loc e1, expr_of_iexpr _loc e2)
- | _ ->
- invalid_arg (sprintf "%s: || operator must be applied to two parameters"
- (Loc.to_string _loc))
- )
-
- | IExpr_app (("="|"=="), exprs) ->
- (match exprs with
- | [e1; e2] -> Expr_eq (expr_of_iexpr _loc e1, expr_of_iexpr _loc e2)
- | _ ->
- invalid_arg (sprintf "%s: = operator must be applied to two parameters"
- (Loc.to_string _loc))
- )
-
- | IExpr_app ("!", exprs) ->
- (match exprs with
- | [e1] -> Expr_not (expr_of_iexpr _loc e1)
- | _ ->
- invalid_arg (sprintf "%s: ! operator must be applied to one parameter"
- (Loc.to_string _loc))
- )
-
- | IExpr_app (("change"|"changes"|"changed"), [IExpr_var v]) ->
- Expr_changes v
-
- | IExpr_app (("change"|"changes"|"changed"), _) ->
- invalid_arg (sprintf "%s: 'changes' operator must be followed by a variable name"
- (Loc.to_string _loc))
-
- | IExpr_app (op, _) ->
- invalid_arg (sprintf "%s: unknown operator in expression: %s"
- (Loc.to_string _loc) op)
-
-let rec string_of_whenexpr = function
- | Expr_bool b -> sprintf "%b" b
- | Expr_str s -> sprintf "%S" s
- | Expr_int i -> sprintf "%s" (string_of_big_int i)
- | Expr_float f -> sprintf "%f" f
- | Expr_var v -> sprintf "%s" v
- | Expr_and (e1, e2) ->
- sprintf "%s && %s" (string_of_whenexpr e1) (string_of_whenexpr e2)
- | Expr_or (e1, e2) ->
- sprintf "%s || %s" (string_of_whenexpr e1) (string_of_whenexpr e2)
- | Expr_eq (e1, e2) ->
- sprintf "%s == %s" (string_of_whenexpr e1) (string_of_whenexpr e2)
- | Expr_not e -> sprintf "! %s" (string_of_whenexpr e)
- | Expr_changes v -> sprintf "changes %s" v
-
-let string_of_periodexpr = function
- | Every_seconds 1 -> "1 second"
- | Every_seconds i -> sprintf "%d seconds" i
- | Every_days 1 -> "1 day"
- | Every_days i -> sprintf "%d days" i
- | Every_months 1 -> "1 month"
- | Every_months i -> sprintf "%d months" i
- | Every_years 1 -> "1 year"
- | Every_years i -> sprintf "%d years" i
-
-let rec dependencies_of_whenexpr = function
- | Expr_bool _ -> []
- | Expr_str _ -> []
- | Expr_int _ -> []
- | Expr_float _ -> []
- | Expr_var v -> [v]
- | Expr_and (e1, e2) ->
- dependencies_of_whenexpr e1 @ dependencies_of_whenexpr e2
- | Expr_or (e1, e2) ->
- dependencies_of_whenexpr e1 @ dependencies_of_whenexpr e2
- | Expr_eq (e1, e2) ->
- dependencies_of_whenexpr e1 @ dependencies_of_whenexpr e2
- | Expr_not e -> dependencies_of_whenexpr e
- | Expr_changes v -> [v]
-
-let dependencies_of_job = function
- | { job_cond = When_job whenexpr } -> dependencies_of_whenexpr whenexpr
- | { job_cond = Every_job _ } -> []
-
-let rec eval_whenexpr job variables = function
- | Expr_bool b -> T_bool b
- | Expr_str s -> T_string s
- | Expr_int i -> T_int i
- | Expr_float f -> T_float f
-
- | Expr_var v ->
- (try StringMap.find v variables with Not_found -> T_string "")
-
- | Expr_and (e1, e2) ->
- if eval_whenexpr_as_bool job variables e1 &&
- eval_whenexpr_as_bool job variables e2 then
- T_bool true
- else
- T_bool false
-
- | Expr_or (e1, e2) ->
- if eval_whenexpr_as_bool job variables e1 ||
- eval_whenexpr_as_bool job variables e2 then
- T_bool true
- else
- T_bool false
-
- | Expr_eq (e1, e2) ->
- let e1 = eval_whenexpr job variables e1
- and e2 = eval_whenexpr job variables e2 in
- if 0 = compare_values e1 e2 then
- T_bool true
- else
- T_bool false
-
- | Expr_not e ->
- if not (eval_whenexpr_as_bool job variables e) then
- T_bool true
- else
- T_bool false
-
- | Expr_changes v ->
- let prev_value =
- try StringMap.find v job.job_private.job_prev_variables
- with Not_found -> T_string "" in
- let curr_value =
- try StringMap.find v variables
- with Not_found -> T_string "" in
-
- if 0 <> compare_values prev_value curr_value then
- T_bool true
- else
- T_bool false
-
-(* Call {!eval_whenexpr} and cast the result to a boolean. *)
-and eval_whenexpr_as_bool job variables expr =
- match eval_whenexpr job variables expr with
- | T_bool r -> r
- | T_string s -> s <> ""
- | T_int i -> sign_big_int i <> 0
- | T_float f -> f <> 0.
-
-(* Do a comparison on two typed values and return -1/0/+1. If the
- * types are different then we compare the values as strings. The user
- * can avoid this by specifying types.
- *)
-and compare_values value1 value2 =
- match value1, value2 with
- | T_bool b1, T_bool b2 -> compare b1 b2
- | T_string s1, T_string s2 -> compare s1 s2
- | T_int i1, T_int i2 -> compare_big_int i1 i2
- | T_float f1, T_float f2 -> compare f1 f2
- | _ ->
- let value1 = value_as_string value1
- and value2 = value_as_string value2 in
- compare value1 value2
-
-and value_as_string = function
- | T_bool b -> string_of_bool b
- | T_string s -> s
- | T_int i -> string_of_big_int i
- | T_float f -> string_of_float f
-
-let job_evaluate job variables =
- match job with
- | { job_cond = Every_job _ } -> false, job
- | { job_cond = When_job whenexpr } ->
- let state = eval_whenexpr_as_bool job variables whenexpr in
-
- (* Because jobs are edge-triggered, we're only interested in the
- * case where the evaluation state changes from false -> true.
- *)
- match job.job_private.job_prev_eval_state, state with
- | false, false
- | true, true
- | true, false ->
- let jobp = { job.job_private with job_prev_eval_state = state } in
- let job = { job with job_private = jobp } in
- false, job
-
- | false, true ->
- let jobp = { job_prev_eval_state = true;
- job_prev_variables = variables } in
- let job = { job with job_private = jobp } in
- true, job
+let string_of_time_t ?(localtime = false) t =
+ let tm = (if localtime then Unix.localtime else gmtime) t in
+ sprintf "%04d-%02d-%02d %02d:%02d:%02d%s"
+ (1900+tm.tm_year) (1+tm.tm_mon) tm.tm_mday
+ tm.tm_hour tm.tm_min tm.tm_sec
+ (if localtime then "" else " UTC")
+
+let string_endswith str suffix =
+ let len = String.length str in
+ let slen = String.length suffix in
+ len >= slen && String.sub str (len-slen) slen = suffix
git.annexia.org / whenjobs.git / blobdiff