*
*)
-open Mathql;;
+open MathQL;;
(*
* conversione di un pattern
[] -> ""
| head::tail ->
let h = match head with
- MQString (s) -> Str.global_replace (Str.regexp "\.") "\\\\\." s
- | MQSlash -> "/"
- | MQAnyChr -> "[^/#]?"
- | MQAst -> "[^/#]*"
- | MQAstAst -> "[^#]*"
+ MQBC s -> Str.global_replace (Str.regexp "\.") "\\\\\." s
+ | MQBD -> "/"
+ | MQBQ -> "[^/#]?"
+ | MQBS -> "[^/#]*"
+ | MQBSS -> "[^#]*"
in
h ^ (patterneval tail)
;;
+let rec fieval fi =
+ match fi with
+ [] -> ""
+ | MQFC i :: tail -> "/" ^ (string_of_int i) ^ (fieval tail)
+ | MQFS :: tail -> "[^/]*" ^ (fieval tail)
+ | MQFSS :: tail -> ".*" ^ (fieval tail)
+;;
+
(*
* conversione di un fragment identifier
*)
let fieval fi =
- match fst fi with
- None -> ""
- | Some i ->
- let s = "#xpointer\\\\(1/" ^ string_of_int (i) in
- match snd fi with
- None ->
- s ^ "\\\\)"
- | Some j ->
- s ^ "/" ^ string_of_int j ^ "\\\\)"
+ if fi = [] then
+ ""
+ else
+ "#xpointer\\\\(1" ^ fieval fi ^ "\\\\)"
;;
(*
* valuta il preambolo
*)
let preeval p =
- p
+ match p with
+ Some s -> s
+ | None -> "[^/]*"
;;
(*
* SQL standard LIKE perche' MathQL prevede esperssioni con "*"
* e con "**".
*)
-let pattern_match preamble pattern fragid =
- " ~ '" ^ (preeval preamble) ^ ":/" ^ (patterneval pattern) ^ (fieval fragid) ^ "'"
+let pattern_match (preamble, pattern, fragid) =
+ " ~ '^" ^ (preeval preamble) ^ ":/" ^ (patterneval pattern) ^ (fieval fragid) ^ "$'"
;;