JetCompactW

関数

データベースを圧縮して再構築する(Unicode版)。

DLLESENT.dll文字セットUnicode (-W)呼出規約winapi

シグネチャ

// ESENT.dll  (Unicode / -W)
#include <windows.h>

INT JetCompactW(
    JET_SESID sesid,
    WORD* szDatabaseSrc,
    WORD* szDatabaseDest,
    JET_PFNSTATUS pfnStatus,
    JET_CONVERT_W* pconvert,   // optional
    DWORD grbit
);

パラメーター

名前	型	方向
sesid	JET_SESID	in
szDatabaseSrc	WORD*	in
szDatabaseDest	WORD*	in
pfnStatus	JET_PFNSTATUS	in
pconvert	JET_CONVERT_W*	inoptional
grbit	DWORD	in

戻り値の型: INT

各言語での呼び出し定義

// ESENT.dll  (Unicode / -W)
#include <windows.h>

INT JetCompactW(
    JET_SESID sesid,
    WORD* szDatabaseSrc,
    WORD* szDatabaseDest,
    JET_PFNSTATUS pfnStatus,
    JET_CONVERT_W* pconvert,   // optional
    DWORD grbit
);

[DllImport("ESENT.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
static extern int JetCompactW(
    UIntPtr sesid,   // JET_SESID
    ref ushort szDatabaseSrc,   // WORD*
    ref ushort szDatabaseDest,   // WORD*
    IntPtr pfnStatus,   // JET_PFNSTATUS
    IntPtr pconvert,   // JET_CONVERT_W* optional
    uint grbit   // DWORD
);

<DllImport("ESENT.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function JetCompactW(
    sesid As UIntPtr,   ' JET_SESID
    ByRef szDatabaseSrc As UShort,   ' WORD*
    ByRef szDatabaseDest As UShort,   ' WORD*
    pfnStatus As IntPtr,   ' JET_PFNSTATUS
    pconvert As IntPtr,   ' JET_CONVERT_W* optional
    grbit As UInteger   ' DWORD
) As Integer
End Function

' sesid : JET_SESID
' szDatabaseSrc : WORD*
' szDatabaseDest : WORD*
' pfnStatus : JET_PFNSTATUS
' pconvert : JET_CONVERT_W* optional
' grbit : DWORD
Declare PtrSafe Function JetCompactW Lib "esent" ( _
    ByVal sesid As LongPtr, _
    ByRef szDatabaseSrc As Integer, _
    ByRef szDatabaseDest As Integer, _
    ByVal pfnStatus As LongPtr, _
    ByVal pconvert As LongPtr, _
    ByVal grbit As Long) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

JetCompactW = ctypes.windll.esent.JetCompactW
JetCompactW.restype = ctypes.c_int
JetCompactW.argtypes = [
    ctypes.c_size_t,  # sesid : JET_SESID
    ctypes.POINTER(ctypes.c_ushort),  # szDatabaseSrc : WORD*
    ctypes.POINTER(ctypes.c_ushort),  # szDatabaseDest : WORD*
    ctypes.c_void_p,  # pfnStatus : JET_PFNSTATUS
    ctypes.c_void_p,  # pconvert : JET_CONVERT_W* optional
    wintypes.DWORD,  # grbit : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('ESENT.dll')
JetCompactW = Fiddle::Function.new(
  lib['JetCompactW'],
  [
    Fiddle::TYPE_UINTPTR_T,  # sesid : JET_SESID
    Fiddle::TYPE_VOIDP,  # szDatabaseSrc : WORD*
    Fiddle::TYPE_VOIDP,  # szDatabaseDest : WORD*
    Fiddle::TYPE_VOIDP,  # pfnStatus : JET_PFNSTATUS
    Fiddle::TYPE_VOIDP,  # pconvert : JET_CONVERT_W* optional
    -Fiddle::TYPE_INT,  # grbit : DWORD
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "esent")]
extern "system" {
    fn JetCompactW(
        sesid: usize,  // JET_SESID
        szDatabaseSrc: *mut u16,  // WORD*
        szDatabaseDest: *mut u16,  // WORD*
        pfnStatus: *const core::ffi::c_void,  // JET_PFNSTATUS
        pconvert: *mut JET_CONVERT_W,  // JET_CONVERT_W* optional
        grbit: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("ESENT.dll", CharSet = CharSet.Unicode)]
public static extern int JetCompactW(UIntPtr sesid, ref ushort szDatabaseSrc, ref ushort szDatabaseDest, IntPtr pfnStatus, IntPtr pconvert, uint grbit);
"@
$api = Add-Type -MemberDefinition $sig -Name 'ESENT_JetCompactW' -Namespace Win32 -PassThru
# $api::JetCompactW(sesid, szDatabaseSrc, szDatabaseDest, pfnStatus, pconvert, grbit)

#uselib "ESENT.dll"
#func global JetCompactW "JetCompactW" wptr, wptr, wptr, wptr, wptr, wptr
; JetCompactW sesid, varptr(szDatabaseSrc), varptr(szDatabaseDest), pfnStatus, varptr(pconvert), grbit   ; 戻り値は stat
; sesid : JET_SESID -> "wptr"
; szDatabaseSrc : WORD* -> "wptr"
; szDatabaseDest : WORD* -> "wptr"
; pfnStatus : JET_PFNSTATUS -> "wptr"
; pconvert : JET_CONVERT_W* optional -> "wptr"
; grbit : DWORD -> "wptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

出力引数:

#uselib "ESENT.dll"
#cfunc global JetCompactW "JetCompactW" sptr, var, var, sptr, var, int
; res = JetCompactW(sesid, szDatabaseSrc, szDatabaseDest, pfnStatus, pconvert, grbit)
; sesid : JET_SESID -> "sptr"
; szDatabaseSrc : WORD* -> "var"
; szDatabaseDest : WORD* -> "var"
; pfnStatus : JET_PFNSTATUS -> "sptr"
; pconvert : JET_CONVERT_W* optional -> "var"
; grbit : DWORD -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。#uselib "ESENT.dll"
#cfunc global JetCompactW "JetCompactW" sptr, sptr, sptr, sptr, sptr, int
; res = JetCompactW(sesid, varptr(szDatabaseSrc), varptr(szDatabaseDest), pfnStatus, varptr(pconvert), grbit)
; sesid : JET_SESID -> "sptr"
; szDatabaseSrc : WORD* -> "sptr"
; szDatabaseDest : WORD* -> "sptr"
; pfnStatus : JET_PFNSTATUS -> "sptr"
; pconvert : JET_CONVERT_W* optional -> "sptr"
; grbit : DWORD -> "int"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; INT JetCompactW(JET_SESID sesid, WORD* szDatabaseSrc, WORD* szDatabaseDest, JET_PFNSTATUS pfnStatus, JET_CONVERT_W* pconvert, DWORD grbit)
#uselib "ESENT.dll"
#cfunc global JetCompactW "JetCompactW" intptr, var, var, intptr, var, int
; res = JetCompactW(sesid, szDatabaseSrc, szDatabaseDest, pfnStatus, pconvert, grbit)
; sesid : JET_SESID -> "intptr"
; szDatabaseSrc : WORD* -> "var"
; szDatabaseDest : WORD* -> "var"
; pfnStatus : JET_PFNSTATUS -> "intptr"
; pconvert : JET_CONVERT_W* optional -> "var"
; grbit : DWORD -> "int"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。; INT JetCompactW(JET_SESID sesid, WORD* szDatabaseSrc, WORD* szDatabaseDest, JET_PFNSTATUS pfnStatus, JET_CONVERT_W* pconvert, DWORD grbit)
#uselib "ESENT.dll"
#cfunc global JetCompactW "JetCompactW" intptr, intptr, intptr, intptr, intptr, int
; res = JetCompactW(sesid, varptr(szDatabaseSrc), varptr(szDatabaseDest), pfnStatus, varptr(pconvert), grbit)
; sesid : JET_SESID -> "intptr"
; szDatabaseSrc : WORD* -> "intptr"
; szDatabaseDest : WORD* -> "intptr"
; pfnStatus : JET_PFNSTATUS -> "intptr"
; pconvert : JET_CONVERT_W* optional -> "intptr"
; grbit : DWORD -> "int"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	esent = windows.NewLazySystemDLL("ESENT.dll")
	procJetCompactW = esent.NewProc("JetCompactW")
)

// sesid (JET_SESID), szDatabaseSrc (WORD*), szDatabaseDest (WORD*), pfnStatus (JET_PFNSTATUS), pconvert (JET_CONVERT_W* optional), grbit (DWORD)
r1, _, err := procJetCompactW.Call(
	uintptr(sesid),
	uintptr(szDatabaseSrc),
	uintptr(szDatabaseDest),
	uintptr(pfnStatus),
	uintptr(pconvert),
	uintptr(grbit),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function JetCompactW(
  sesid: NativeUInt;   // JET_SESID
  szDatabaseSrc: Pointer;   // WORD*
  szDatabaseDest: Pointer;   // WORD*
  pfnStatus: Pointer;   // JET_PFNSTATUS
  pconvert: Pointer;   // JET_CONVERT_W* optional
  grbit: DWORD   // DWORD
): Integer; stdcall;
  external 'ESENT.dll' name 'JetCompactW';

result := DllCall("ESENT\JetCompactW"
    , "UPtr", sesid   ; JET_SESID
    , "Ptr", szDatabaseSrc   ; WORD*
    , "Ptr", szDatabaseDest   ; WORD*
    , "Ptr", pfnStatus   ; JET_PFNSTATUS
    , "Ptr", pconvert   ; JET_CONVERT_W* optional
    , "UInt", grbit   ; DWORD
    , "Int")   ; return: INT

●JetCompactW(sesid, szDatabaseSrc, szDatabaseDest, pfnStatus, pconvert, grbit) = DLL("ESENT.dll", "int JetCompactW(int, void*, void*, void*, void*, dword)")
# 呼び出し: JetCompactW(sesid, szDatabaseSrc, szDatabaseDest, pfnStatus, pconvert, grbit)
# sesid : JET_SESID -> "int"
# szDatabaseSrc : WORD* -> "void*"
# szDatabaseDest : WORD* -> "void*"
# pfnStatus : JET_PFNSTATUS -> "void*"
# pconvert : JET_CONVERT_W* optional -> "void*"
# grbit : DWORD -> "dword"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。