uregex_lookingAt

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

CHAR uregex_lookingAt(
    URegularExpression* regexp,
    INT startIndex,
    UErrorCode* status
);

<DllImport("icuin.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function uregex_lookingAt(
    ByRef regexp As IntPtr,   ' URegularExpression* in/out
    startIndex As Integer,   ' INT
    ByRef status As Integer   ' UErrorCode* in/out
) As SByte
End Function

' regexp : URegularExpression* in/out
' startIndex : INT
' status : UErrorCode* in/out
Declare PtrSafe Function uregex_lookingAt Lib "icuin" ( _
    ByRef regexp As LongPtr, _
    ByVal startIndex As Long, _
    ByRef status As Long) As Byte
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

uregex_lookingAt = ctypes.cdll.icuin.uregex_lookingAt
uregex_lookingAt.restype = ctypes.c_byte
uregex_lookingAt.argtypes = [
    ctypes.c_void_p,  # regexp : URegularExpression* in/out
    ctypes.c_int,  # startIndex : INT
    ctypes.c_void_p,  # status : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuin.dll')
uregex_lookingAt = Fiddle::Function.new(
  lib['uregex_lookingAt'],
  [
    Fiddle::TYPE_VOIDP,  # regexp : URegularExpression* in/out
    Fiddle::TYPE_INT,  # startIndex : INT
    Fiddle::TYPE_VOIDP,  # status : UErrorCode* in/out
  ],
  Fiddle::TYPE_CHAR, Fiddle::Function::CDECL)

#[link(name = "icuin")]
extern "C" {
    fn uregex_lookingAt(
        regexp: *mut isize,  // URegularExpression* in/out
        startIndex: i32,  // INT
        status: *mut i32  // UErrorCode* in/out
    ) -> i8;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuin.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern sbyte uregex_lookingAt(ref IntPtr regexp, int startIndex, ref int status);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuin_uregex_lookingAt' -Namespace Win32 -PassThru
# $api::uregex_lookingAt(regexp, startIndex, status)

#uselib "icuin.dll"
#func global uregex_lookingAt "uregex_lookingAt" sptr, sptr, sptr
; uregex_lookingAt varptr(regexp), startIndex, varptr(status)   ; 戻り値は stat
; regexp : URegularExpression* in/out -> "sptr"
; startIndex : INT -> "sptr"
; status : UErrorCode* in/out -> "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 (
	icuin = windows.NewLazySystemDLL("icuin.dll")
	procuregex_lookingAt = icuin.NewProc("uregex_lookingAt")
)

// regexp (URegularExpression* in/out), startIndex (INT), status (UErrorCode* in/out)
r1, _, err := procuregex_lookingAt.Call(
	uintptr(regexp),
	uintptr(startIndex),
	uintptr(status),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // CHAR

function uregex_lookingAt(
  regexp: Pointer;   // URegularExpression* in/out
  startIndex: Integer;   // INT
  status: Pointer   // UErrorCode* in/out
): Shortint; cdecl;
  external 'icuin.dll' name 'uregex_lookingAt';

result := DllCall("icuin\uregex_lookingAt"
    , "Ptr", regexp   ; URegularExpression* in/out
    , "Int", startIndex   ; INT
    , "Ptr", status   ; UErrorCode* in/out
    , "Cdecl Char")   ; return: CHAR

●uregex_lookingAt(regexp, startIndex, status) = DLL("icuin.dll", "char uregex_lookingAt(void*, int, void*)")
# 呼び出し: uregex_lookingAt(regexp, startIndex, status)
# regexp : URegularExpression* in/out -> "void*"
# startIndex : INT -> "int"
# status : UErrorCode* in/out -> "void*"
# 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 "icuin" fn uregex_lookingAt(
    regexp: [*c]isize, // URegularExpression* in/out
    startIndex: i32, // INT
    status: [*c]i32 // UErrorCode* in/out
) callconv(.c) i8;

proc uregex_lookingAt(
    regexp: ptr int,  # URegularExpression* in/out
    startIndex: int32,  # INT
    status: ptr int32  # UErrorCode* in/out
): int8 {.importc: "uregex_lookingAt", cdecl, dynlib: "icuin.dll".}

pragma(lib, "icuin");
extern(C)
byte uregex_lookingAt(
    ptrdiff_t* regexp,   // URegularExpression* in/out
    int startIndex,   // INT
    int* status   // UErrorCode* in/out
);

ccall((:uregex_lookingAt, "icuin.dll"), Int8,
      (Ptr{Int}, Int32, Ptr{Int32}),
      regexp, startIndex, status)
# regexp : URegularExpression* in/out -> Ptr{Int}
# startIndex : INT -> Int32
# status : UErrorCode* in/out -> Ptr{Int32}

local ffi = require("ffi")
ffi.cdef[[
int8_t uregex_lookingAt(
    intptr_t* regexp,
    int32_t startIndex,
    int32_t* status);
]]
local icuin = ffi.load("icuin")
-- icuin.uregex_lookingAt(regexp, startIndex, status)
-- regexp : URegularExpression* in/out
-- startIndex : INT
-- status : UErrorCode* in/out
-- 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('icuin.dll');
const uregex_lookingAt = lib.func('__cdecl', 'uregex_lookingAt', 'int8_t', ['intptr_t *', 'int32_t', 'int32_t *']);
// uregex_lookingAt(regexp, startIndex, status)
// regexp : URegularExpression* in/out -> 'intptr_t *'
// startIndex : INT -> 'int32_t'
// status : UErrorCode* in/out -> '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("icuin.dll", {
  uregex_lookingAt: { parameters: ["pointer", "i32", "pointer"], result: "i8" },
});
// lib.symbols.uregex_lookingAt(regexp, startIndex, status)
// regexp : URegularExpression* in/out -> "pointer"
// startIndex : INT -> "i32"
// status : UErrorCode* in/out -> "pointer"
// 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
int8_t uregex_lookingAt(
    intptr_t* regexp,
    int32_t startIndex,
    int32_t* status);
C, "icuin.dll");
// $ffi->uregex_lookingAt(regexp, startIndex, status);
// regexp : URegularExpression* in/out
// startIndex : INT
// status : UErrorCode* in/out
// 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 Icuin extends Library {
    Icuin INSTANCE = Native.load("icuin", Icuin.class);
    byte uregex_lookingAt(
        LongByReference regexp,   // URegularExpression* in/out
        int startIndex,   // INT
        IntByReference status   // UErrorCode* in/out
    );
}

@[Link("icuin")]
lib Libicuin
  fun uregex_lookingAt = uregex_lookingAt(
    regexp : LibC::SSizeT*,   # URegularExpression* in/out
    startIndex : Int32,   # INT
    status : Int32*   # UErrorCode* in/out
  ) : Int8
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 uregex_lookingAtNative = Int8 Function(Pointer<IntPtr>, Int32, Pointer<Int32>);
typedef uregex_lookingAtDart = int Function(Pointer<IntPtr>, int, Pointer<Int32>);
final uregex_lookingAt = DynamicLibrary.open('icuin.dll')
    .lookupFunction<uregex_lookingAtNative, uregex_lookingAtDart>('uregex_lookingAt');
// regexp : URegularExpression* in/out -> Pointer<IntPtr>
// startIndex : INT -> Int32
// status : UErrorCode* in/out -> Pointer<Int32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function uregex_lookingAt(
  regexp: Pointer;   // URegularExpression* in/out
  startIndex: Integer;   // INT
  status: Pointer   // UErrorCode* in/out
): Shortint; cdecl;
  external 'icuin.dll' name 'uregex_lookingAt';

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

foreign import ccall safe "uregex_lookingAt"
  c_uregex_lookingAt :: Ptr CIntPtr -> Int32 -> Ptr Int32 -> IO Int8
-- regexp : URegularExpression* in/out -> Ptr CIntPtr
-- startIndex : INT -> Int32
-- status : UErrorCode* in/out -> Ptr 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 uregex_lookingat =
  foreign "uregex_lookingAt"
    ((ptr intptr_t) @-> int32_t @-> (ptr int32_t) @-> returning int8_t)
(* regexp : URegularExpression* in/out -> (ptr intptr_t) *)
(* startIndex : INT -> int32_t *)
(* status : UErrorCode* in/out -> (ptr 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 icuin (t "icuin.dll"))
(cffi:use-foreign-library icuin)

(cffi:defcfun ("uregex_lookingAt" uregex-looking-at :convention :cdecl) :int8
  (regexp :pointer)   ; URegularExpression* in/out
  (start-index :int32)   ; INT
  (status :pointer))   ; UErrorCode* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $uregex_lookingAt = Win32::API::More->new('icuin',
    'char uregex_lookingAt(LPVOID regexp, int startIndex, LPVOID status)');
# my $ret = $uregex_lookingAt->Call($regexp, $startIndex, $status);
# regexp : URegularExpression* in/out -> LPVOID
# startIndex : INT -> int
# status : UErrorCode* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。