名前空間
変種
操作

std::codecvt_utf16

提供: cppreference.com
< cpp‎ | locale

 
 
ローカライゼーションライブラリ
ロケールおよびファセット
Original:
Locales and facets
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
locale
文字分類
Original:
Character classification
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
変換
Original:
Conversions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
ファセットカテゴリの基底クラスです
Original:
Facet category base classes
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
ファセットカテゴリ
Original:
Facet categories
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
ロケール固有のファセット
Original:
Locale-specific facets
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
コー​​ド変換ファセット
Original:
Code conversion facets
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
codecvt_utf8(C++11)
codecvt_utf16(C++11)
Cロケール
Original:
C locale
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
 
Defined in header <codecvt>
template< class Elem,

          unsigned long Maxcode = 0x10ffff,
          std::codecvt_mode Mode = (std::codecvt_mode)0 >

class codecvt_utf16 : public std::codecvt<Elem, char, std::mbstate_t>;;
std::codecvt_utf16UTF-16でエンコードされたバイト列とUCS2またはUCS4の文字列(std::codecvtの種類によって異なります)との間の変換をカプセル化Elemファセットです。このcodecvtファセットはバイナリモードでUTF-16でファイルを読み書きするために使用することができます.
Original:
std::codecvt_utf16 is a std::codecvt facet which encapsulates conversion between a UTF-16 encoded byte string and UCS2 or UCS4 character string (depending on the type of Elem). This codecvt facet can be used to read and write UTF-16 files in binary mode.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

目次

[編集] テンプレートパラメータ

Elem -
どちらchar16_tchar32_t、またはwchar_t
Original:
either char16_t, char32_t, or wchar_t
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Maxcode -
このファセットはエラーなしで読み取りまたは書き込みすることElemの最大値
Original:
the largest value of Elem that this facet will read or write without error
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Mode -
タイプstd::codecvt_modeの定数
Original:
a constant of type std::codecvt_mode
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Inherited from std::codecvt

Member types

メンバー·タイプ
Original:
Member type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Definition
intern_type internT
extern_type externT
state_type stateT

Member objects

メンバー名
Original:
Member name
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Type
id (静的) std::locale::id

Member functions

do_outを呼び出します
Original:
invokes do_out
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(パブリックメンバ関数of std::codecvt) [edit]
do_inを呼び出します
Original:
invokes do_in
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(パブリックメンバ関数of std::codecvt) [edit]
do_unshiftを呼び出します
Original:
invokes do_unshift
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(パブリックメンバ関数of std::codecvt) [edit]
do_encodingを呼び出します
Original:
invokes do_encoding
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(パブリックメンバ関数of std::codecvt) [edit]
do_always_noconvを呼び出します
Original:
invokes do_always_noconv
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(パブリックメンバ関数of std::codecvt) [edit]
do_lengthを呼び出します
Original:
invokes do_length
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(パブリックメンバ関数of std::codecvt) [edit]
do_max_lengthを呼び出します
Original:
invokes do_max_length
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(パブリックメンバ関数of std::codecvt) [edit]

Protected member functions

[仮想]
そのようなファイルに書き込むときのように、internTからexternTに文字列を変換します
Original:
converts a string from internT to externT, such as when writing to file
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(仮想protectedメンバ関数of std::codecvt) [edit]
[仮想]
そのようなファイルからの読み込みの場合のように、externTからinternTに文字列を変換します
Original:
converts a string from externT to internT, such as when reading from file
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(仮想protectedメンバ関数of std::codecvt) [edit]
[仮想]
不完全な変換のためexternT文字の終端文字列を生成する
Original:
generates the termination character sequence of externT characters for incomplete conversion
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(仮想protectedメンバ関数of std::codecvt) [edit]
[仮想]
一定の場合には、1 internT文字を生成するのに必要なexternT文字の数を返します
Original:
returns the number of externT characters necessary to produce one internT character, if constant
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(仮想protectedメンバ関数of std::codecvt) [edit]
ファセットかどうかをテストし、すべての有効な引数値の恒等変換をエンコードします
Original:
tests if the facet encodes an identity conversion for all valid argument values
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(仮想protectedメンバ関数of std::codecvt) [edit]
[仮想]
与えられたinternTバッファに変換することによって消費されるexternT文字列の長さを計算します
Original:
calculates the length of the externT string that would be consumed by conversion into given internT buffer
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(仮想protectedメンバ関数of std::codecvt) [edit]
シングルinternT文字に変換することができるexternT文字の最大数を返します
Original:
returns the maximum number of externT characters that could be converted into a single internT character
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(仮想protectedメンバ関数of std::codecvt) [edit]


Inherited from std::codecvt_base

メンバー·タイプ
Original:
Member type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Definition
enum result { ok, partial, error, noconv };
対象範囲外の列挙型
Original:
Unscoped enumeration type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
列挙定数
Original:
Enumeration constant
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Definition
ok
変換はエラーなしで完了しました
Original:
conversion was completed with no error
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
partial
ていないすべてのソースの文字が変換されました
Original:
not all source characters were converted
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
error
無効な文字を検出しました
Original:
encountered an invalid character
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
noconv
変換が必要なく、入力と出力の種類が同じものはありません
Original:
no conversion required, input and output types are the same
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[編集]

次の例では、32ビットwchar_tているシステムでUTF-16LEファイルの復号化を示しています。 wchar_tは、UCS2ではなく、UTF-16を生成するための16ビットシステム上でstd::codecvt_utf16<char16_t>、第三文字のデコードに失敗します..
Original:
The following example demonstrates decoding of UTF-16le file on a system with 32-bit wchar_t. On a system with 16-bit wchar_t, decoding of the third character will fail because std::codecvt_utf16<char16_t> produces UCS2, not UTF-16.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

#include <fstream>
#include <iostream>
#include <string>
#include <locale>
#include <codecvt>
void prepare_file()
{
    // UTF-16le data (if host system is little-endian)
    char16_t utf16le[4] ={0x007a,          // latin small letter 'z' U+007a
                          0x6c34,          // CJK ideograph "water"  U+6c34
                          0xd834, 0xdd0b}; // musical sign segno U+1d10b
    // store in a file
    std::ofstream fout("text.txt");
    fout.write( reinterpret_cast<char*>(utf16le), sizeof utf16le);
}
int main()
{
    prepare_file();
    // open as a byte stream
    std::wifstream fin("text.txt", std::ios::binary);
    // apply facet
    fin.imbue(std::locale(fin.getloc(),
       new std::codecvt_utf16<wchar_t, 0x10ffff, std::little_endian>));
 
    for(wchar_t c; fin.get(c); )
            std::cout << std::showbase << std::hex << c << '\n';
}

Output:

0x7a
0x6c34
0x1d10b

[編集] も参照してください

Character
conversions
narrow multibyte
(char)
UTF-8
(char)
UTF-16
(char16_t)
UTF-16 mbrtoc16 / c16rtomb codecvt<char16_t, char, mbstate_t>
codecvt_utf8_utf16<char16_t>
codecvt_utf8_utf16<char32_t>
codecvt_utf8_utf16<wchar_t>
N/A
UCS2 No codecvt_utf8<char16_t> codecvt_utf16<char16_t>
UTF-32/UCS4
(char32_t)
mbrtoc32 / c32rtomb codecvt<char32_t, char, mbstate_t>
codecvt_utf8<char32_t>
codecvt_utf16<char32_t>
UCS2/UCS4
(wchar_t)
No codecvt_utf8<wchar_t> codecvt_utf16<wchar_t>
wide
(wchar_t)
codecvt<wchar_t, char, mbstate_t>
mbsrtowcs / wcsrtombs
No No
UTF-8、UTF-16、UTF-32を含む文字エンコーディング間の変換を行います
Original:
converts between character encodings, including UTF-8, UTF-16, UTF-32
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(クラステンプレート) [edit]
タグ標準codecvtファセットの動作を変更する
Original:
tags to alter behavior of the standard codecvt facets
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(クラス) [edit]
UTF-8とUCS2/UCS4の間で変換を行います
Original:
converts between UTF-8 and UCS2/UCS4
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(クラステンプレート) [edit]
converts between UTF-8 and UTF-16
(クラステンプレート) [edit]