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    std::basic_filebuf::pbackfail

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    <metanoindex/>

     
    C++
     
    Input / Output-Bibliothek
    I / O-Manipulatoren
    C-style I / O
    Puffern
    Original:
    Buffers
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    basic_streambuf
    basic_filebuf
    basic_stringbuf
    strstreambuf(veraltet)
    Streams
    Original:
    Streams
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    Abstraktionen
    Original:
    Abstractions
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    ios_base
    basic_ios
    basic_istream
    basic_ostream
    basic_iostream
    Datei-I / O
    Original:
    File I/O
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    basic_ifstream
    basic_ofstream
    basic_fstream
    String I / O
    Original:
    String I/O
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    basic_istringstream
    basic_ostringstream
    basic_stringstream
    Array I / O
    Original:
    Array I/O
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    istrstream(veraltet)
    ostrstream(veraltet)
    strstream(veraltet)
    Types
    Original:
    Types
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    streamoff
    streamsize
    fpos
    Fehler Kategorie Schnittstelle
    Original:
    Error category interface
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    iostream_category(C++11)
    io_errc(C++11)
     
    std::basic_filebuf
    Öffentliche Member-Funktionen
    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
    Geschützt Member-Funktionen
    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
    Non-Member-Funktionen
    Original:
    Non-member functions
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    swap(std::basic_filebuf)(C++11)
     
    <tbody> </tbody>
    protected: virtual int_type pbackfail( int_type c = Traits::eof() )
    Versetzt den Charakter c zurück in die get-Bereich, in einer der drei Möglichkeiten:
    Original:
    Puts the character c back into the get area, in one of the three ways:
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    1)

    Wenn c nicht die EOF-Zeichen, wie durch den Aufruf Traits::eq_int_type(c,traits::eof()) und wenn es Raum für eine putback bestimmt, und wenn c genau ist das Zeichen, dass wurde zuletzt von der get-Bereich, wie Traits::eq(to_char_type(c),gptr()[-1]) bestimmt, dann einfach dekrementiert gptr() einzeln gelesen .
    Original:
    If c is not the EOF character, as determined by calling Traits::eq_int_type(c,traits::eof()) and if there is room for a putback, and if c is exactly the character that was most recently read from the get area, as determined by Traits::eq(to_char_type(c),gptr()[-1]), then simply decrements gptr() by one.
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    2)

    Wenn c nicht das EOF-Zeichen, wie durch Aufrufen Traits::eq_int_type(c,traits::eof()) und wenn es Raum für eine putback bestimmt, und wenn der Puffer erlaubt, die Fläche zu erhalten, dekrementiert gptr() modifizieren und schreibt c nach dort. Beachten Sie, dass dies nicht zu ändern die zugehörige Zeichenfolge (die Datei), sondern nur die sich im Arbeitsspeicher .
    Original:
    If c is not the EOF character, as determined by calling Traits::eq_int_type(c,traits::eof()) and if there is room for a putback, and if the buffer is allowed to modify the get area, decrements gptr() and writes c to there. Note that this does not modify the associated character sequence (the file), but only the get area in memory.
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    3)

    Wenn c ist die EOF-Zeichen (Traits::eq_int_type(c,traits::eof()) kehrt true), und wenn es Raum für eine putback, dekrementiert gptr(). Dies hat den Effekt, dass das letzte Zeichen ausgelesen zum Lesen wieder .
    Original:
    If c is the EOF character (Traits::eq_int_type(c,traits::eof()) returns true), and if there is room for a putback, decrements gptr(). This has the effect of making the last character read available for reading once again.
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    Wenn die Datei nicht geöffnet ist (is_open()==false diese Funktion kehrt Traits::eof() sofort .
    Original:
    If the file is not open (is_open()==false, this function returns Traits::eof() immediately.
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    Parameter

    c -
    das Zeichen putback oder eof
    Original:
    the character to putback, or eof
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    Rückgabewert

    1-2) c

    3) Traits::not_eof(c)

    Traits::eof() im Falle des Scheiterns .
    Original:
    Traits::eof() in case of failure.
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    Beispiel

    This section is incomplete
    Reason: no example

    Siehe auch

    [virtuell]
    stellt ein Zeichen wieder in der Eingangssequenz, gegebenenfalls Modifizierung der Eingabesequenz
    Original:
    puts a character back into the input sequence, possibly modifying the input sequence
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    (virtuellen geschützten Member-Funktion of std::basic_streambuf) [edit]
    bewegt den nächsten Zeiger in der Eingabesequenz zurück um eins
    Original:
    moves the next pointer in the input sequence back by one
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    (öffentliche Elementfunktion of std::basic_streambuf) [edit]
    stellt ein Zeichen wieder in der Eingabesequenz
    Original:
    puts one character back in the input sequence
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    (öffentliche Elementfunktion of std::basic_streambuf) [edit]
    unextracts ein Zeichen
    Original:
    unextracts a character
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    (öffentliche Elementfunktion of std::basic_istream) [edit]
    setzt Zeichen in Input-Stream
    Original:
    puts character into input stream
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    (öffentliche Elementfunktion of std::basic_istream) [edit]