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std::basic_fstream::basic_fstream

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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_fstream
Member-Funktionen
Original:
Member functions
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basic_fstream::basic_fstream
basic_fstream::operator=(C++11)
basic_fstream::swap(C++11)
basic_fstream::rdbuf
Datei-Operationen
Original:
File operations
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basic_fstream::is_open
basic_fstream::open
basic_fstream::close
Non-Member-Funktionen
Original:
Non-member functions
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basic_fstream::swap(std::basic_fstream)(C++11)
 
basic_fstream();
 (1)
basic_fstream( const char* filename,
               ios_base::openmode mode = ios_base::in|ios_base::out );
 (2)
basic_fstream( const string& filename,                                  
               ios_base::openmode mode = ios_base::in|ios_base::out );
 (3) (seit C++11)
basic_fstream( basic_fstream&& other );
 (4) (seit C++11)
basic_fstream( const basic_fstream& rhs) = delete;
 (5)
Erzeugt neue Datei-Stream .
Original:
Constructs new file stream.
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1)
Standard constructor: baut einen Stream, der nicht mit einer Datei zugeordnet ist: default-konstruiert die std::basic_filebuf und baut die Basis mit dem Zeiger auf diese default-konstruiert std::basic_filebuf Mitglied .
Original:
Default constructor: constructs a stream that is not associated with a file: default-constructs the std::basic_filebuf and constructs the base with the pointer to this default-constructed std::basic_filebuf member.
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2)
Zuerst führt die gleichen Schritte wie die Default-Konstruktor, dann asssociate den Strom mit einer Datei durch den Aufruf rdbuf()->open(filename, mode).. Wenn die open ()-Aufruf gibt einen Null-Zeiger, setzt setstate(failbit) .
Original:
First, performs the same steps as the default constructor, then asssociate the stream with a file by calling rdbuf()->open(filename, mode).. If the open() call returns a null pointer, sets setstate(failbit).
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3)
Gleich wie basic_fstream(filename.c_str(), mode) .
Original:
Same as basic_fstream(filename.c_str(), mode).
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4)
Bewegen Konstruktor. Zunächst Bewegung baut die Basisklasse von other (was keinen Einfluss auf die rdbuf() Zeiger), dann bewegen-baut das std::basic_filebuf Mitglied, dann nennt this->set_rdbuf() die neue basic_filebuf als rdbuf() Zeiger in der Basisklasse installieren .
Original:
Move constructor. First, move-constructs the base class from other (which does not affect the rdbuf() pointer), then move-constructs the std::basic_filebuf member, then calls this->set_rdbuf() to install the new basic_filebuf as the rdbuf() pointer in the base class.
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5)
Der Copy-Konstruktor wird gelöscht: Diese Klasse ist nicht kopierbar .
Original:
The copy-constructor is deleted: this class is not copyable.
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[Bearbeiten] Parameter

filename -
der Name der Datei, die geöffnet werden kann
Original:
the name of the file to be opened
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mode -
legt Stream offenen Modus. Es ist Bitmaske Typ sind die folgenden Konstanten definiert:
Constant
Original:
Constant
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 Explanation
app
versuchen Ende Strom vor jedem Schreibvorgang
Original:
seek to the end of stream before each write
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binary
Öffnen Sie im Binär-Modus
Original:
open in binary mode
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in
zum Lesen öffnen
Original:
open for reading
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out
zum Schreiben geöffnet
Original:
open for writing
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trunc
Verwerfen der Inhalt des Stroms beim Öffnen
Original:
discard the contents of the stream when opening
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ate
versuchen Ende Stromes unmittelbar nach geöffnet
Original:
seek to the end of stream immediately after open
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Original:
specifies stream open mode. It is bitmask type, the following constants are defined:
Constant
Original:
Constant
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 Explanation
app
versuchen Ende Strom vor jedem Schreibvorgang
Original:
seek to the end of stream before each write
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binary
Öffnen Sie im Binär-Modus
Original:
open in binary mode
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in
zum Lesen öffnen
Original:
open for reading
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out
zum Schreiben geöffnet
Original:
open for writing
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trunc
Verwerfen der Inhalt des Stroms beim Öffnen
Original:
discard the contents of the stream when opening
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ate
versuchen Ende Stromes unmittelbar nach geöffnet
Original:
seek to the end of stream immediately after open
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other -
andere Datei-Stream, der als Quelle verwenden
Original:
another file stream to use as source
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[Bearbeiten] Beispiel

#include <fstream>
#include <utility>
#include <string>
int main()
{
std::fstream f0;
    std::fstream f1("test.bin", std::ios::binary);
    std::string name = "example.txt";
    std::fstream f2(name);
    std::fstream f3(std::move(f1));
}


[Bearbeiten] Siehe auch
öffnet eine Datei und ordnet sie mit dem Strom
Original:
opens a file and associates it with the stream
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(öffentliche Elementfunktion) [edit]
öffnet eine Datei und konfiguriert es wie die zugehörige Zeichenfolge
Original:
opens a file and configures it as the associated character sequence
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(öffentliche Elementfunktion of std::basic_filebuf) [edit]
ersetzt die rdbuf ohne Löschen seinen Fehler Zustand
Original:
replaces the rdbuf without clearing its error state
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(geschützt Member-Funktion) [edit]
Baut das Objekt
Original:
constructs the object
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(öffentliche Elementfunktion of std::basic_iostream) [edit]
Von „https://de.cppreference.com/mwiki/index.php?title=cpp/io/basic_fstream/basic_fstream&oldid=26755“