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std::basic_filebuf::underflow

提供: cppreference.com
< cpp‎ | io‎ | basic filebuf

 
 
入力/出力ライブラリ
I / Oのマニピュレータ
CスタイルのI / O
バッファ
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(廃止予定)
ストリーム
Original:
Streams
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抽象化
Original:
Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
ファイルI / O
Original:
File I/O
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basic_ifstream
basic_ofstream
basic_fstream
文字列I / O
Original:
String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
アレイのI / O
Original:
Array I/O
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istrstream(廃止予定)
ostrstream(廃止予定)
strstream(廃止予定)
タイプ
Original:
Types
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streamoff
streamsize
fpos
エラーカテゴリインターフェース
Original:
Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_filebuf
パブリックメンバ関数
Original:
Public member functions
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basic_filebuf::basic_filebuf
basic_filebuf::~basic_filebuf
basic_filebuf::operator=(C++11)
basic_filebuf::swap(C++11)
basic_filebuf::is_open
basic_filebuf::open
basic_filebuf::close
メンバ関数を保護しました
Original:
Protected member functions
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basic_filebuf::showmanyc
basic_filebuf::underflow
basic_filebuf::uflow
basic_filebuf::pbackfail
basic_filebuf::overflow
basic_filebuf::setbuf
basic_filebuf::seekoff
basic_filebuf::seekpos
basic_filebuf::sync
basic_filebuf::imbue
非メンバ関数
Original:
Non-member functions
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swap(std::basic_filebuf)(C++11)
 
protected:
virtual int_type underflow()
get領域に関連付けられた文字列(ファイル)からデータを読み取るためにことを除いて、基本クラスstd::basic_streambuf::underflowのように振る舞い、最初の(必要に応じて大として割り当て)ファイルからの一時的なバッファにバイトを読み込み、その後のstd::codecvt::inを使用しています次にget領域を設定するために使用される内部形式に外部(通常は、マルチバイト)表現に変換するため吹き込まロケール。変換は、ロケールのstd::codecvt::always_noconv戻りtrue場合にスキップされることがあります
Original:
Behaves like the base class std::basic_streambuf::underflow, except that to read the data from the associated character sequence (the file) into the get area, first reads the bytes from the file into a temporary buffer (allocated as large as necessary), then uses std::codecvt::in of the imbued locale to convert the external (typically, multibyte) representation to the internal form which is then used to populate the get area. The conversion may be skipped if the locale's std::codecvt::always_noconv returns true
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目次

[編集] パラメータ

(なし)
Original:
(none)
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[編集] 値を返します

Traits::to_int_type(*gptr())(保留中のシーケンスの最初の文字)が成功した場合、または障害が発生した場合にTraits::eof().
Original:
Traits::to_int_type(*gptr()) (the first character of the pending sequence) in case of success, or Traits::eof() in case of failure.
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[編集]

[編集] も参照してください

[仮想]
get領域に関連付けられた入力シーケンスから文字列を読み取ります
Original:
reads characters from the associated input sequence to the get area
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(仮想protectedメンバ関数of std::basic_streambuf) [edit]
[仮想]
関連付けられたファイルおよび前渡金からの読み取り中に、変換結果に暗黙的に変換できるget領域の次のポインタ
Original:
reads from the associated file and advances the next pointer in the get area
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(仮想protectedメンバ関数) [edit]
[仮想]
put領域から関連付けられたファイルに文字を書き込みます
Original:
writes characters to the associated file from the put area
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(仮想protectedメンバ関数) [edit]