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(**************************************************************************)
(* Copyright (c) 2003 Christian Szegedy <csdontspam871@metamatix.org> *)
(* *)
(* Copyright (c) 2007 Jane Street Holding, LLC *)
(* Author: Markus Mottl <markus.mottl@gmail.com> *)
(* *)
(* Permission is hereby granted, free of charge, to any person *)
(* obtaining a copy of this software and associated documentation files *)
(* (the "Software"), to deal in the Software without restriction, *)
(* including without limitation the rights to use, copy, modify, merge, *)
(* publish, distribute, sublicense, and/or sell copies of the Software, *)
(* and to permit persons to whom the Software is furnished to do so, *)
(* subject to the following conditions: *)
(* *)
(* The above copyright notice and this permission notice shall be *)
(* included in all copies or substantial portions of the Software. *)
(* *)
(* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, *)
(* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES *)
(* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND *)
(* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS *)
(* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN *)
(* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN *)
(* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE *)
(* SOFTWARE. *)
(**************************************************************************)
open Printf
exception InternalError of string
exception Error of string
exception RangeError of int * int
type db
type stmt
module Rc = struct
type unknown
external int_of_unknown : unknown -> int = "%identity"
type t =
| OK
| ERROR
| INTERNAL
| PERM
| ABORT
| BUSY
| LOCKED
| NOMEM
| READONLY
| INTERRUPT
| IOERR
| CORRUPT
| NOTFOUND
| FULL
| CANTOPEN
| PROTOCOL
| EMPTY
| SCHEMA
| TOOBIG
| CONSTRAINT
| MISMATCH
| MISUSE
| NOFLS
| AUTH
| FORMAT
| RANGE
| NOTADB
| ROW
| DONE
| UNKNOWN of unknown
let to_string = function
| OK -> "OK"
| ERROR -> "ERROR"
| INTERNAL -> "INTERNAL"
| PERM -> "PERM"
| ABORT -> "ABORT"
| BUSY -> "BUSY"
| LOCKED -> "LOCKED"
| NOMEM -> "NOMEM"
| READONLY -> "READONLY"
| INTERRUPT -> "INTERRUPT"
| IOERR -> "IOERR"
| CORRUPT -> "CORRUPT"
| NOTFOUND -> "NOTFOUND"
| FULL -> "FULL"
| CANTOPEN -> "CANTOPEN"
| PROTOCOL -> "PROTOCOL"
| EMPTY -> "EMPTY"
| SCHEMA -> "SCHEMA"
| TOOBIG -> "TOOBIG"
| CONSTRAINT -> "CONSTRAINT"
| MISMATCH -> "MISMATCH"
| MISUSE -> "MISUSE"
| NOFLS -> "NOLFS"
| AUTH -> "AUTH"
| FORMAT -> "FORMAT"
| RANGE -> "RANGE"
| NOTADB -> "NOTADB"
| ROW -> "ROW"
| DONE -> "DONE"
| UNKNOWN n -> sprintf "UNKNOWN %d" (int_of_unknown n)
end
module Data = struct
type t =
| NONE
| NULL
| INT of int64
| FLOAT of float
| TEXT of string
| BLOB of string
let to_string = function
| NONE | NULL -> ""
| INT i -> Int64.to_string i
| FLOAT f -> string_of_float f
| TEXT t | BLOB t -> t
let to_string_debug = function
| NONE -> "NONE"
| NULL -> "NULL"
| INT i -> sprintf "INT <%Ld>" i
| FLOAT f -> sprintf "FLOAT <%f>" f
| TEXT t -> sprintf "TEXT <%S>" t
| BLOB b -> sprintf "BLOB <%d>" (String.length b)
end
type header = string
type headers = header array
type row = string option array
type row_not_null = string array
external db_open : string -> db = "caml_sqlite3_open"
external db_close : db -> bool = "caml_sqlite3_close"
external errcode : db -> Rc.t = "caml_sqlite3_errcode"
external errmsg : db -> string = "caml_sqlite3_errmsg"
external last_insert_rowid : db -> int64 = "caml_sqlite3_last_insert_rowid"
external exec :
db -> ?cb : (string option array -> headers -> unit) -> string -> Rc.t
= "caml_sqlite3_exec"
external exec_no_headers :
db -> cb : (string option array -> unit) -> string -> Rc.t
= "caml_sqlite3_exec_no_headers"
external exec_not_null :
db -> cb : (string array -> headers -> unit) -> string -> Rc.t
= "caml_sqlite3_exec_not_null"
external exec_not_null_no_headers :
db -> cb : (string array -> unit) -> string -> Rc.t
= "caml_sqlite3_exec_not_null_no_headers"
external changes : db -> int = "caml_sqlite3_changes"
external prepare : db -> string -> stmt = "caml_sqlite3_prepare"
external prepare_tail : stmt -> stmt option = "caml_sqlite3_prepare_tail"
external recompile : stmt -> unit = "caml_sqlite3_recompile"
external step : stmt -> Rc.t = "caml_sqlite3_step"
external reset : stmt -> Rc.t = "caml_sqlite3_stmt_reset"
external finalize : stmt -> Rc.t = "caml_sqlite3_stmt_finalize"
external data_count : stmt -> int = "caml_sqlite3_data_count"
external column_count : stmt -> int = "caml_sqlite3_column_count"
external column : stmt -> int -> Data.t = "caml_sqlite3_column"
external column_name : stmt -> int -> string = "caml_sqlite3_column_name"
external column_decltype :
stmt -> int -> string option = "caml_sqlite3_column_decltype"
external bind : stmt -> int -> Data.t -> Rc.t = "caml_sqlite3_bind"
external bind_parameter_count :
stmt -> int = "caml_sqlite3_bind_parameter_count"
external bind_parameter_name :
stmt -> int -> string option = "caml_sqlite3_bind_parameter_name"
external bind_parameter_index :
stmt -> string -> int = "caml_sqlite3_bind_parameter_index"
external busy_timeout : db -> int -> unit = "caml_sqlite3_busy_timeout"
external enable_load_extension :
db -> bool -> bool = "caml_sqlite3_enable_load_extension" "noalloc"
(* TODO: these give linking errors on some platforms *)
(* external sleep : int -> int = "caml_sqlite3_sleep" *)
(* external clear_bindings : stmt -> Rc.t = "caml_sqlite3_clear_bindings" *)
let row_data stmt = Array.init (data_count stmt) (column stmt)
let row_names stmt = Array.init (data_count stmt) (column_name stmt)
let row_decltypes stmt = Array.init (data_count stmt) (column_decltype stmt)
(* Function registration *)
external create_function :
db -> string -> int -> (Data.t array -> Data.t) -> unit =
"caml_sqlite3_create_function"
let create_funN db name f = create_function db name (-1) f
let create_fun0 db name f = create_function db name 0 (fun _ -> f ())
let create_fun1 db name f = create_function db name 1 (fun args -> f args.(0))
let create_fun2 db name f =
create_function db name 2 (fun args -> f args.(0) args.(1))
let create_fun3 db name f =
create_function db name 3 (fun args -> f args.(0) args.(1) args.(2))
external delete_function : db -> string -> unit = "caml_sqlite3_delete_function"
module Aggregate = struct
external create_function :
db -> string -> int ->
'a -> ('a -> Data.t array -> 'a) -> ('a -> Data.t) -> unit =
"caml_sqlite3_create_aggregate_function_bc"
"caml_sqlite3_create_aggregate_function_nc"
let create_funN db name ~init ~step ~final =
create_function db name (-1) init step final
let create_fun0 db name ~init ~step ~final =
create_function db name 0 init (fun acc _ -> step acc) final
let create_fun1 db name ~init ~step ~final =
create_function db name 1 init (fun acc args -> step acc args.(0)) final
let create_fun2 db name ~init ~step ~final =
create_function db name 2 init
(fun acc args -> step acc args.(0) args.(1)) final
let create_fun3 db name ~init ~step ~final =
create_function db name 3 init
(fun acc args -> step acc args.(0) args.(1) args.(2)) final
end
(* Initialisation *)
external init : unit -> unit = "caml_sqlite3_init"
let () =
Callback.register_exception "Sqlite3.InternalError" (InternalError "");
Callback.register_exception "Sqlite3.Error" (Error "");
Callback.register_exception "Sqlite3.RangeError" (RangeError (0, 0));
init ()
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