ucnv_cbFromUWriteBytes

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

void ucnv_cbFromUWriteBytes(
    UConverterFromUnicodeArgs* args,
    LPCSTR source,
    INT length,
    INT offsetIndex,
    UErrorCode* err
);

<DllImport("icuuc.dll", ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl)>
Public Shared Sub ucnv_cbFromUWriteBytes(
    args As IntPtr,   ' UConverterFromUnicodeArgs* in/out
    <MarshalAs(UnmanagedType.LPStr)> source As String,   ' LPCSTR
    length As Integer,   ' INT
    offsetIndex As Integer,   ' INT
    ByRef err As Integer   ' UErrorCode* in/out
)
End Sub

' args : UConverterFromUnicodeArgs* in/out
' source : LPCSTR
' length : INT
' offsetIndex : INT
' err : UErrorCode* in/out
Declare PtrSafe Sub ucnv_cbFromUWriteBytes Lib "icuuc" ( _
    ByVal args As LongPtr, _
    ByVal source As String, _
    ByVal length As Long, _
    ByVal offsetIndex As Long, _
    ByRef err As Long)
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ucnv_cbFromUWriteBytes = ctypes.cdll.icuuc.ucnv_cbFromUWriteBytes
ucnv_cbFromUWriteBytes.restype = None
ucnv_cbFromUWriteBytes.argtypes = [
    ctypes.c_void_p,  # args : UConverterFromUnicodeArgs* in/out
    wintypes.LPCSTR,  # source : LPCSTR
    ctypes.c_int,  # length : INT
    ctypes.c_int,  # offsetIndex : INT
    ctypes.c_void_p,  # err : UErrorCode* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('icuuc.dll')
ucnv_cbFromUWriteBytes = Fiddle::Function.new(
  lib['ucnv_cbFromUWriteBytes'],
  [
    Fiddle::TYPE_VOIDP,  # args : UConverterFromUnicodeArgs* in/out
    Fiddle::TYPE_VOIDP,  # source : LPCSTR
    Fiddle::TYPE_INT,  # length : INT
    Fiddle::TYPE_INT,  # offsetIndex : INT
    Fiddle::TYPE_VOIDP,  # err : UErrorCode* in/out
  ],
  Fiddle::TYPE_VOID, Fiddle::Function::CDECL)

#[link(name = "icuuc")]
extern "C" {
    fn ucnv_cbFromUWriteBytes(
        args: *mut UConverterFromUnicodeArgs,  // UConverterFromUnicodeArgs* in/out
        source: *const u8,  // LPCSTR
        length: i32,  // INT
        offsetIndex: i32,  // INT
        err: *mut i32  // UErrorCode* in/out
    );
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("icuuc.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern void ucnv_cbFromUWriteBytes(IntPtr args, [MarshalAs(UnmanagedType.LPStr)] string source, int length, int offsetIndex, ref int err);
"@
$api = Add-Type -MemberDefinition $sig -Name 'icuuc_ucnv_cbFromUWriteBytes' -Namespace Win32 -PassThru
# $api::ucnv_cbFromUWriteBytes(args, source, length, offsetIndex, err)

#uselib "icuuc.dll"
#func global ucnv_cbFromUWriteBytes "ucnv_cbFromUWriteBytes" sptr, sptr, sptr, sptr, sptr
; ucnv_cbFromUWriteBytes varptr(args), source, length, offsetIndex, varptr(err)
; args : UConverterFromUnicodeArgs* in/out -> "sptr"
; source : LPCSTR -> "sptr"
; length : INT -> "sptr"
; offsetIndex : INT -> "sptr"
; err : UErrorCode* in/out -> "sptr"

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

var (
	icuuc = windows.NewLazySystemDLL("icuuc.dll")
	procucnv_cbFromUWriteBytes = icuuc.NewProc("ucnv_cbFromUWriteBytes")
)

// args (UConverterFromUnicodeArgs* in/out), source (LPCSTR), length (INT), offsetIndex (INT), err (UErrorCode* in/out)
r1, _, err := procucnv_cbFromUWriteBytes.Call(
	uintptr(args),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(source))),
	uintptr(length),
	uintptr(offsetIndex),
	uintptr(err),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // void

procedure ucnv_cbFromUWriteBytes(
  args: Pointer;   // UConverterFromUnicodeArgs* in/out
  source: PAnsiChar;   // LPCSTR
  length: Integer;   // INT
  offsetIndex: Integer;   // INT
  err: Pointer   // UErrorCode* in/out
); cdecl;
  external 'icuuc.dll' name 'ucnv_cbFromUWriteBytes';

result := DllCall("icuuc\ucnv_cbFromUWriteBytes"
    , "Ptr", args   ; UConverterFromUnicodeArgs* in/out
    , "AStr", source   ; LPCSTR
    , "Int", length   ; INT
    , "Int", offsetIndex   ; INT
    , "Ptr", err   ; UErrorCode* in/out
    , "Cdecl Int")   ; return: void

●ucnv_cbFromUWriteBytes(args, source, length, offsetIndex, err) = DLL("icuuc.dll", "int ucnv_cbFromUWriteBytes(void*, char*, int, int, void*)")
# 呼び出し: ucnv_cbFromUWriteBytes(args, source, length, offsetIndex, err)
# args : UConverterFromUnicodeArgs* in/out -> "void*"
# source : LPCSTR -> "char*"
# length : INT -> "int"
# offsetIndex : INT -> "int"
# 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 ucnv_cbFromUWriteBytes(
    args: [*c]UConverterFromUnicodeArgs, // UConverterFromUnicodeArgs* in/out
    source: [*c]const u8, // LPCSTR
    length: i32, // INT
    offsetIndex: i32, // INT
    err: [*c]i32 // UErrorCode* in/out
) callconv(.c) void;

proc ucnv_cbFromUWriteBytes(
    args: ptr UConverterFromUnicodeArgs,  # UConverterFromUnicodeArgs* in/out
    source: cstring,  # LPCSTR
    length: int32,  # INT
    offsetIndex: int32,  # INT
    err: ptr int32  # UErrorCode* in/out
) {.importc: "ucnv_cbFromUWriteBytes", cdecl, dynlib: "icuuc.dll".}

pragma(lib, "icuuc");
extern(C)
void ucnv_cbFromUWriteBytes(
    UConverterFromUnicodeArgs* args,   // UConverterFromUnicodeArgs* in/out
    const(char)* source,   // LPCSTR
    int length,   // INT
    int offsetIndex,   // INT
    int* err   // UErrorCode* in/out
);

ccall((:ucnv_cbFromUWriteBytes, "icuuc.dll"), Cvoid,
      (Ptr{UConverterFromUnicodeArgs}, Cstring, Int32, Int32, Ptr{Int32}),
      args, source, length, offsetIndex, err)
# args : UConverterFromUnicodeArgs* in/out -> Ptr{UConverterFromUnicodeArgs}
# source : LPCSTR -> Cstring
# length : INT -> Int32
# offsetIndex : INT -> Int32
# err : UErrorCode* in/out -> Ptr{Int32}

local ffi = require("ffi")
ffi.cdef[[
void ucnv_cbFromUWriteBytes(
    void* args,
    const char* source,
    int32_t length,
    int32_t offsetIndex,
    int32_t* err);
]]
local icuuc = ffi.load("icuuc")
-- icuuc.ucnv_cbFromUWriteBytes(args, source, length, offsetIndex, err)
-- args : UConverterFromUnicodeArgs* in/out
-- source : LPCSTR
-- length : INT
-- offsetIndex : INT
-- 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 ucnv_cbFromUWriteBytes = lib.func('__cdecl', 'ucnv_cbFromUWriteBytes', 'void', ['void *', 'str', 'int32_t', 'int32_t', 'int32_t *']);
// ucnv_cbFromUWriteBytes(args, source, length, offsetIndex, err)
// args : UConverterFromUnicodeArgs* in/out -> 'void *'
// source : LPCSTR -> 'str'
// length : INT -> 'int32_t'
// offsetIndex : INT -> '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", {
  ucnv_cbFromUWriteBytes: { parameters: ["pointer", "buffer", "i32", "i32", "pointer"], result: "void" },
});
// lib.symbols.ucnv_cbFromUWriteBytes(args, source, length, offsetIndex, err)
// args : UConverterFromUnicodeArgs* in/out -> "pointer"
// source : LPCSTR -> "buffer"
// length : INT -> "i32"
// offsetIndex : INT -> "i32"
// 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
void ucnv_cbFromUWriteBytes(
    void* args,
    const char* source,
    int32_t length,
    int32_t offsetIndex,
    int32_t* err);
C, "icuuc.dll");
// $ffi->ucnv_cbFromUWriteBytes(args, source, length, offsetIndex, err);
// args : UConverterFromUnicodeArgs* in/out
// source : LPCSTR
// length : INT
// offsetIndex : INT
// 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);
    void ucnv_cbFromUWriteBytes(
        Pointer args,   // UConverterFromUnicodeArgs* in/out
        String source,   // LPCSTR
        int length,   // INT
        int offsetIndex,   // INT
        IntByReference err   // UErrorCode* in/out
    );
}

@[Link("icuuc")]
lib Libicuuc
  fun ucnv_cbFromUWriteBytes = ucnv_cbFromUWriteBytes(
    args : UConverterFromUnicodeArgs*,   # UConverterFromUnicodeArgs* in/out
    source : UInt8*,   # LPCSTR
    length : Int32,   # INT
    offsetIndex : Int32,   # INT
    err : Int32*   # UErrorCode* in/out
  ) : Void
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 ucnv_cbFromUWriteBytesNative = Void Function(Pointer<Void>, Pointer<Utf8>, Int32, Int32, Pointer<Int32>);
typedef ucnv_cbFromUWriteBytesDart = void Function(Pointer<Void>, Pointer<Utf8>, int, int, Pointer<Int32>);
final ucnv_cbFromUWriteBytes = DynamicLibrary.open('icuuc.dll')
    .lookupFunction<ucnv_cbFromUWriteBytesNative, ucnv_cbFromUWriteBytesDart>('ucnv_cbFromUWriteBytes');
// args : UConverterFromUnicodeArgs* in/out -> Pointer<Void>
// source : LPCSTR -> Pointer<Utf8>
// length : INT -> Int32
// offsetIndex : INT -> Int32
// err : UErrorCode* in/out -> Pointer<Int32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
procedure ucnv_cbFromUWriteBytes(
  args: Pointer;   // UConverterFromUnicodeArgs* in/out
  source: PAnsiChar;   // LPCSTR
  length: Integer;   // INT
  offsetIndex: Integer;   // INT
  err: Pointer   // UErrorCode* in/out
); cdecl;
  external 'icuuc.dll' name 'ucnv_cbFromUWriteBytes';

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

foreign import ccall safe "ucnv_cbFromUWriteBytes"
  c_ucnv_cbFromUWriteBytes :: Ptr () -> CString -> Int32 -> Int32 -> Ptr Int32 -> IO ()
-- args : UConverterFromUnicodeArgs* in/out -> Ptr ()
-- source : LPCSTR -> CString
-- length : INT -> Int32
-- offsetIndex : INT -> 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 ucnv_cbfromuwritebytes =
  foreign "ucnv_cbFromUWriteBytes"
    ((ptr void) @-> string @-> int32_t @-> int32_t @-> (ptr int32_t) @-> returning void)
(* args : UConverterFromUnicodeArgs* in/out -> (ptr void) *)
(* source : LPCSTR -> string *)
(* length : INT -> int32_t *)
(* offsetIndex : INT -> 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 ("ucnv_cbFromUWriteBytes" ucnv-cb-from-uwrite-bytes :convention :cdecl) :void
  (args :pointer)   ; UConverterFromUnicodeArgs* in/out
  (source :string)   ; LPCSTR
  (length :int32)   ; INT
  (offset-index :int32)   ; INT
  (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 $ucnv_cbFromUWriteBytes = Win32::API::More->new('icuuc',
    'void ucnv_cbFromUWriteBytes(LPVOID args, LPCSTR source, int length, int offsetIndex, LPVOID err)');
# my $ret = $ucnv_cbFromUWriteBytes->Call($args, $source, $length, $offsetIndex, $err);
# args : UConverterFromUnicodeArgs* in/out -> LPVOID
# source : LPCSTR -> LPCSTR
# length : INT -> int
# offsetIndex : INT -> int
# 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。