utf8_back1SafeBody

// icuuc.dll
#include <windows.h>

INT utf8_back1SafeBody(
    const BYTE* s,
    INT start,
    INT i
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function utf8_back1SafeBody(
    s As IntPtr,   ' BYTE*
    start As Integer,   ' INT
    i As Integer   ' INT
) As Integer
End Function

' s : BYTE*
' start : INT
' i : INT
Declare PtrSafe Function utf8_back1SafeBody Lib "icuuc" ( _
    ByVal s As LongPtr, _
    ByVal start As Long, _
    ByVal i As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

utf8_back1SafeBody = ctypes.cdll.icuuc.utf8_back1SafeBody
utf8_back1SafeBody.restype = ctypes.c_int
utf8_back1SafeBody.argtypes = [
    ctypes.POINTER(ctypes.c_ubyte),  # s : BYTE*
    ctypes.c_int,  # start : INT
    ctypes.c_int,  # i : INT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
utf8_back1SafeBody = Fiddle::Function.new(
  lib['utf8_back1SafeBody'],
  [
    Fiddle::TYPE_VOIDP,  # s : BYTE*
    Fiddle::TYPE_INT,  # start : INT
    Fiddle::TYPE_INT,  # i : INT
  ],
  Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn utf8_back1SafeBody(
        s: *const u8,  // BYTE*
        start: i32,  // INT
        i: i32  // INT
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuuc.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int utf8_back1SafeBody(IntPtr s, int start, int i);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_utf8_back1SafeBody' -Namespace Win32 -PassThru
# $api::utf8_back1SafeBody(s, start, i)

#uselib "icuuc.dll"
#func global utf8_back1SafeBody "utf8_back1SafeBody" sptr, sptr, sptr
; utf8_back1SafeBody varptr(s), start, i   ; 戻り値は stat
; s : BYTE* -> "sptr"
; start : INT -> "sptr"
; i : INT -> "sptr"
; ※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。

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

var (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	procutf8_back1SafeBody = icuuc.NewProc("utf8_back1SafeBody")
)

// s (BYTE*), start (INT), i (INT)
r1, _, err := procutf8_back1SafeBody.Call(
	uintptr(s),
	uintptr(start),
	uintptr(i),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function utf8_back1SafeBody(
  s: Pointer;   // BYTE*
  start: Integer;   // INT
  i: Integer   // INT
): Integer; cdecl;
  external 'icuuc.dll' name 'utf8_back1SafeBody';

result := DllCall("icuuc\utf8_back1SafeBody"
    , "Ptr", s   ; BYTE*
    , "Int", start   ; INT
    , "Int", i   ; INT
    , "Cdecl Int")   ; return: INT

●utf8_back1SafeBody(s, start, i) = DLL("icuuc.dll", "int utf8_back1SafeBody(void*, int, int)")
# 呼び出し: utf8_back1SafeBody(s, start, i)
# s : BYTE* -> "void*"
# start : INT -> "int"
# i : INT -> "int"
# 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)。
# ※cdecl関数。DLL()宣言はstdcall前提。cdeclは EXEC_PTR(`cdecl`,…) を使用。

const std = @import("std");

extern "icuuc" fn utf8_back1SafeBody(
    s: [*c]u8, // BYTE*
    start: i32, // INT
    i: i32 // INT
) callconv(.c) i32;

proc utf8_back1SafeBody(
    s: ptr uint8,  # BYTE*
    start: int32,  # INT
    i: int32  # INT
): int32 {.importc: "utf8_back1SafeBody", cdecl, dynlib: "icuuc.dll".}

pragma(lib, "icuuc");
extern(C)
int utf8_back1SafeBody(
    ubyte* s,   // BYTE*
    int start,   // INT
    int i   // INT
);

ccall((:utf8_back1SafeBody, "icuuc.dll"), Int32,
      (Ptr{UInt8}, Int32, Int32),
      s, start, i)
# s : BYTE* -> Ptr{UInt8}
# start : INT -> Int32
# i : INT -> Int32

local ffi = require("ffi")
ffi.cdef[[
int32_t utf8_back1SafeBody(
    uint8_t* s,
    int32_t start,
    int32_t i);
]]
local icuuc = ffi.load("icuuc")
-- icuuc.utf8_back1SafeBody(s, start, i)
-- s : BYTE*
-- start : INT
-- i : INT
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('icuuc.dll');
const utf8_back1SafeBody = lib.func('__cdecl', 'utf8_back1SafeBody', 'int32_t', ['uint8_t *', 'int32_t', 'int32_t']);
// utf8_back1SafeBody(s, start, i)
// s : BYTE* -> 'uint8_t *'
// start : INT -> 'int32_t'
// i : INT -> 'int32_t'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("icuuc.dll", {
  utf8_back1SafeBody: { parameters: ["pointer", "i32", "i32"], result: "i32" },
});
// lib.symbols.utf8_back1SafeBody(s, start, i)
// s : BYTE* -> "pointer"
// start : INT -> "i32"
// i : INT -> "i32"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t utf8_back1SafeBody(
    uint8_t* s,
    int32_t start,
    int32_t i);
C, "icuuc.dll");
// $ffi->utf8_back1SafeBody(s, start, i);
// s : BYTE*
// start : INT
// i : INT
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Icuuc extends Library {
    Icuuc INSTANCE = Native.load("icuuc", Icuuc.class);
    int utf8_back1SafeBody(
        byte[] s,   // BYTE*
        int start,   // INT
        int i   // INT
    );
}

@[Link("icuuc")]
lib Libicuuc
  fun utf8_back1SafeBody = utf8_back1SafeBody(
    s : UInt8*,   # BYTE*
    start : Int32,   # INT
    i : Int32   # INT
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef utf8_back1SafeBodyNative = Int32 Function(Pointer<Uint8>, Int32, Int32);
typedef utf8_back1SafeBodyDart = int Function(Pointer<Uint8>, int, int);
final utf8_back1SafeBody = DynamicLibrary.open('icuuc.dll')
    .lookupFunction<utf8_back1SafeBodyNative, utf8_back1SafeBodyDart>('utf8_back1SafeBody');
// s : BYTE* -> Pointer<Uint8>
// start : INT -> Int32
// i : INT -> Int32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function utf8_back1SafeBody(
  s: Pointer;   // BYTE*
  start: Integer;   // INT
  i: Integer   // INT
): Integer; cdecl;
  external 'icuuc.dll' name 'utf8_back1SafeBody';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import ccall safe "utf8_back1SafeBody"
  c_utf8_back1SafeBody :: Ptr Word8 -> Int32 -> Int32 -> IO Int32
-- s : BYTE* -> Ptr Word8
-- start : INT -> Int32
-- i : INT -> Int32
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let utf8_back1safebody =
  foreign "utf8_back1SafeBody"
    ((ptr uint8_t) @-> int32_t @-> int32_t @-> returning int32_t)
(* s : BYTE* -> (ptr uint8_t) *)
(* start : INT -> int32_t *)
(* i : INT -> int32_t *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library icuuc (t "icuuc.dll"))
(cffi:use-foreign-library icuuc)

(cffi:defcfun ("utf8_back1SafeBody" utf8-back1-safe-body :convention :cdecl) :int32
  (s :pointer)   ; BYTE*
  (start :int32)   ; INT
  (i :int32))   ; INT
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $utf8_back1SafeBody = Win32::API::More->new('icuuc',
    'int utf8_back1SafeBody(LPVOID s, int start, int i)');
# my $ret = $utf8_back1SafeBody->Call($s, $start, $i);
# s : BYTE* -> LPVOID
# start : INT -> int
# i : INT -> int
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。