uloc_forLanguageTag

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

INT uloc_forLanguageTag(
    LPCSTR langtag,
    LPSTR localeID,
    INT localeIDCapacity,
    INT* parsedLength,
    UErrorCode* err
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Function uloc_forLanguageTag(
    <MarshalAs(UnmanagedType.LPStr)> langtag As String,   ' LPCSTR
    <MarshalAs(UnmanagedType.LPStr)> localeID As String,   ' LPSTR
    localeIDCapacity As Integer,   ' INT
    ByRef parsedLength As Integer,   ' INT* in/out
    ByRef err As Integer   ' UErrorCode* in/out
) As Integer
End Function

' langtag : LPCSTR
' localeID : LPSTR
' localeIDCapacity : INT
' parsedLength : INT* in/out
' err : UErrorCode* in/out
Declare PtrSafe Function uloc_forLanguageTag Lib "icuuc" ( _
    ByVal langtag As String, _
    ByVal localeID As String, _
    ByVal localeIDCapacity As Long, _
    ByRef parsedLength As Long, _
    ByRef err 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

uloc_forLanguageTag = ctypes.cdll.icuuc.uloc_forLanguageTag
uloc_forLanguageTag.restype = ctypes.c_int
uloc_forLanguageTag.argtypes = [
    wintypes.LPCSTR,  # langtag : LPCSTR
    wintypes.LPCSTR,  # localeID : LPSTR
    ctypes.c_int,  # localeIDCapacity : INT
    ctypes.POINTER(ctypes.c_int),  # parsedLength : INT* in/out
    ctypes.c_void_p,  # err : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
uloc_forLanguageTag = Fiddle::Function.new(
  lib['uloc_forLanguageTag'],
  [
    Fiddle::TYPE_VOIDP,  # langtag : LPCSTR
    Fiddle::TYPE_VOIDP,  # localeID : LPSTR
    Fiddle::TYPE_INT,  # localeIDCapacity : INT
    Fiddle::TYPE_VOIDP,  # parsedLength : INT* in/out
    Fiddle::TYPE_VOIDP,  # err : UErrorCode* in/out
  ],
  Fiddle::TYPE_INT, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn uloc_forLanguageTag(
        langtag: *const u8,  // LPCSTR
        localeID: *mut u8,  // LPSTR
        localeIDCapacity: i32,  // INT
        parsedLength: *mut i32,  // INT* in/out
        err: *mut i32  // UErrorCode* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuuc.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern int uloc_forLanguageTag([MarshalAs(UnmanagedType.LPStr)] string langtag, [MarshalAs(UnmanagedType.LPStr)] string localeID, int localeIDCapacity, ref int parsedLength, ref int err);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_uloc_forLanguageTag' -Namespace Win32 -PassThru
# $api::uloc_forLanguageTag(langtag, localeID, localeIDCapacity, parsedLength, err)

#uselib "icuuc.dll"
#func global uloc_forLanguageTag "uloc_forLanguageTag" sptr, sptr, sptr, sptr, sptr
; uloc_forLanguageTag langtag, localeID, localeIDCapacity, varptr(parsedLength), varptr(err)   ; 戻り値は stat
; langtag : LPCSTR -> "sptr"
; localeID : LPSTR -> "sptr"
; localeIDCapacity : INT -> "sptr"
; parsedLength : INT* in/out -> "sptr"
; err : 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 (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	proculoc_forLanguageTag = icuuc.NewProc("uloc_forLanguageTag")
)

// langtag (LPCSTR), localeID (LPSTR), localeIDCapacity (INT), parsedLength (INT* in/out), err (UErrorCode* in/out)
r1, _, err := proculoc_forLanguageTag.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(langtag))),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(localeID))),
	uintptr(localeIDCapacity),
	uintptr(parsedLength),
	uintptr(err),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function uloc_forLanguageTag(
  langtag: PAnsiChar;   // LPCSTR
  localeID: PAnsiChar;   // LPSTR
  localeIDCapacity: Integer;   // INT
  parsedLength: Pointer;   // INT* in/out
  err: Pointer   // UErrorCode* in/out
): Integer; cdecl;
  external 'icuuc.dll' name 'uloc_forLanguageTag';

result := DllCall("icuuc\uloc_forLanguageTag"
    , "AStr", langtag   ; LPCSTR
    , "AStr", localeID   ; LPSTR
    , "Int", localeIDCapacity   ; INT
    , "Ptr", parsedLength   ; INT* in/out
    , "Ptr", err   ; UErrorCode* in/out
    , "Cdecl Int")   ; return: INT

●uloc_forLanguageTag(langtag, localeID, localeIDCapacity, parsedLength, err) = DLL("icuuc.dll", "int uloc_forLanguageTag(char*, char*, int, void*, void*)")
# 呼び出し: uloc_forLanguageTag(langtag, localeID, localeIDCapacity, parsedLength, err)
# langtag : LPCSTR -> "char*"
# localeID : LPSTR -> "char*"
# localeIDCapacity : INT -> "int"
# parsedLength : INT* in/out -> "void*"
# err : 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 "icuuc" fn uloc_forLanguageTag(
    langtag: [*c]const u8, // LPCSTR
    localeID: [*c]const u8, // LPSTR
    localeIDCapacity: i32, // INT
    parsedLength: [*c]i32, // INT* in/out
    err: [*c]i32 // UErrorCode* in/out
) callconv(.c) i32;

proc uloc_forLanguageTag(
    langtag: cstring,  # LPCSTR
    localeID: cstring,  # LPSTR
    localeIDCapacity: int32,  # INT
    parsedLength: ptr int32,  # INT* in/out
    err: ptr int32  # UErrorCode* in/out
): int32 {.importc: "uloc_forLanguageTag", cdecl, dynlib: "icuuc.dll".}

pragma(lib, "icuuc");
extern(C)
int uloc_forLanguageTag(
    const(char)* langtag,   // LPCSTR
    const(char)* localeID,   // LPSTR
    int localeIDCapacity,   // INT
    int* parsedLength,   // INT* in/out
    int* err   // UErrorCode* in/out
);

ccall((:uloc_forLanguageTag, "icuuc.dll"), Int32,
      (Cstring, Cstring, Int32, Ptr{Int32}, Ptr{Int32}),
      langtag, localeID, localeIDCapacity, parsedLength, err)
# langtag : LPCSTR -> Cstring
# localeID : LPSTR -> Cstring
# localeIDCapacity : INT -> Int32
# parsedLength : INT* in/out -> Ptr{Int32}
# err : UErrorCode* in/out -> Ptr{Int32}

local ffi = require("ffi")
ffi.cdef[[
int32_t uloc_forLanguageTag(
    const char* langtag,
    const char* localeID,
    int32_t localeIDCapacity,
    int32_t* parsedLength,
    int32_t* err);
]]
local icuuc = ffi.load("icuuc")
-- icuuc.uloc_forLanguageTag(langtag, localeID, localeIDCapacity, parsedLength, err)
-- langtag : LPCSTR
-- localeID : LPSTR
-- localeIDCapacity : INT
-- parsedLength : INT* in/out
-- err : 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('icuuc.dll');
const uloc_forLanguageTag = lib.func('__cdecl', 'uloc_forLanguageTag', 'int32_t', ['str', 'str', 'int32_t', 'int32_t *', 'int32_t *']);
// uloc_forLanguageTag(langtag, localeID, localeIDCapacity, parsedLength, err)
// langtag : LPCSTR -> 'str'
// localeID : LPSTR -> 'str'
// localeIDCapacity : INT -> 'int32_t'
// parsedLength : INT* in/out -> 'int32_t *'
// err : 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("icuuc.dll", {
  uloc_forLanguageTag: { parameters: ["buffer", "buffer", "i32", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.uloc_forLanguageTag(langtag, localeID, localeIDCapacity, parsedLength, err)
// langtag : LPCSTR -> "buffer"
// localeID : LPSTR -> "buffer"
// localeIDCapacity : INT -> "i32"
// parsedLength : INT* in/out -> "pointer"
// err : 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
int32_t uloc_forLanguageTag(
    const char* langtag,
    const char* localeID,
    int32_t localeIDCapacity,
    int32_t* parsedLength,
    int32_t* err);
C, "icuuc.dll");
// $ffi->uloc_forLanguageTag(langtag, localeID, localeIDCapacity, parsedLength, err);
// langtag : LPCSTR
// localeID : LPSTR
// localeIDCapacity : INT
// parsedLength : INT* in/out
// err : 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 Icuuc extends Library {
    Icuuc INSTANCE = Native.load("icuuc", Icuuc.class);
    int uloc_forLanguageTag(
        String langtag,   // LPCSTR
        String localeID,   // LPSTR
        int localeIDCapacity,   // INT
        IntByReference parsedLength,   // INT* in/out
        IntByReference err   // UErrorCode* in/out
    );
}

@[Link("icuuc")]
lib Libicuuc
  fun uloc_forLanguageTag = uloc_forLanguageTag(
    langtag : UInt8*,   # LPCSTR
    localeID : UInt8*,   # LPSTR
    localeIDCapacity : Int32,   # INT
    parsedLength : Int32*,   # INT* in/out
    err : Int32*   # UErrorCode* in/out
  ) : 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 uloc_forLanguageTagNative = Int32 Function(Pointer<Utf8>, Pointer<Utf8>, Int32, Pointer<Int32>, Pointer<Int32>);
typedef uloc_forLanguageTagDart = int Function(Pointer<Utf8>, Pointer<Utf8>, int, Pointer<Int32>, Pointer<Int32>);
final uloc_forLanguageTag = DynamicLibrary.open('icuuc.dll')
    .lookupFunction<uloc_forLanguageTagNative, uloc_forLanguageTagDart>('uloc_forLanguageTag');
// langtag : LPCSTR -> Pointer<Utf8>
// localeID : LPSTR -> Pointer<Utf8>
// localeIDCapacity : INT -> Int32
// parsedLength : INT* in/out -> Pointer<Int32>
// err : UErrorCode* in/out -> Pointer<Int32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function uloc_forLanguageTag(
  langtag: PAnsiChar;   // LPCSTR
  localeID: PAnsiChar;   // LPSTR
  localeIDCapacity: Integer;   // INT
  parsedLength: Pointer;   // INT* in/out
  err: Pointer   // UErrorCode* in/out
): Integer; cdecl;
  external 'icuuc.dll' name 'uloc_forLanguageTag';

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

foreign import ccall safe "uloc_forLanguageTag"
  c_uloc_forLanguageTag :: CString -> CString -> Int32 -> Ptr Int32 -> Ptr Int32 -> IO Int32
-- langtag : LPCSTR -> CString
-- localeID : LPSTR -> CString
-- localeIDCapacity : INT -> Int32
-- parsedLength : INT* in/out -> Ptr Int32
-- err : 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 uloc_forlanguagetag =
  foreign "uloc_forLanguageTag"
    (string @-> string @-> int32_t @-> (ptr int32_t) @-> (ptr int32_t) @-> returning int32_t)
(* langtag : LPCSTR -> string *)
(* localeID : LPSTR -> string *)
(* localeIDCapacity : INT -> int32_t *)
(* parsedLength : INT* in/out -> (ptr int32_t) *)
(* err : 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 icuuc (t "icuuc.dll"))
(cffi:use-foreign-library icuuc)

(cffi:defcfun ("uloc_forLanguageTag" uloc-for-language-tag :convention :cdecl) :int32
  (langtag :string)   ; LPCSTR
  (locale-id :string)   ; LPSTR
  (locale-idcapacity :int32)   ; INT
  (parsed-length :pointer)   ; INT* in/out
  (err :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 $uloc_forLanguageTag = Win32::API::More->new('icuuc',
    'int uloc_forLanguageTag(LPCSTR langtag, LPCSTR localeID, int localeIDCapacity, LPVOID parsedLength, LPVOID err)');
# my $ret = $uloc_forLanguageTag->Call($langtag, $localeID, $localeIDCapacity, $parsedLength, $err);
# langtag : LPCSTR -> LPCSTR
# localeID : LPSTR -> LPCSTR
# localeIDCapacity : INT -> int
# parsedLength : INT* in/out -> LPVOID
# err : 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。