std::basic_stringbuf::str

 

C++

Langage

Concepts

Bibliothèque d'utilitaires

Bibliothèque pour les chaînes de caractères

Bibliothèque de conteneurs

Bibliothèque d'algorithmes

Bibliothèque d'itérateurs

Bibliothèque pour le calcul numérique

Bibliothèque pour les entrées/sorties

Bibliothèque pour la régionalisation

Bibliothèque pour les expressions régulières (C++11)

Bibliothèque pour les opérations atomiques (C++11)

Bibliothèque pour les processus légers (threads) (C++11)

 

D'entrée / sortie de bibliothèque

I / O manipulateurs

C-style I / O

Tampons Original: Buffers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_streambuf

basic_filebuf

basic_stringbuf

strstreambuf (obsolète)

Cours d'eau Original: Streams The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Abstractions Original: Abstractions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

ios_base

basic_ios

basic_istream

basic_ostream

basic_iostream

Fichier E / O Original: File I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_ifstream

basic_ofstream

basic_fstream

Chaîne I / O Original: String I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_istringstream

basic_ostringstream

basic_stringstream

Tableau I / O Original: Array I/O The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

istrstream (obsolète)

ostrstream (obsolète)

strstream (obsolète)

Types Original: Types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

streamoff

streamsize

fpos

Interface catégorie d'erreur Original: Error category interface The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

iostream_category (C++11)

io_errc (C++11)

 

std::basic_stringbuf

Fonctions membres publiques Original: Public member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_stringbuf::basic_stringbuf

basic_stringbuf::operator= (C++11)

basic_stringbuf::swap (C++11)

basic_stringbuf::str

Protégé fonctions membres Original: Protected member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_stringbuf::underflow

basic_stringbuf::pbackfail

basic_stringbuf::overflow

basic_stringbuf::setbuf

basic_stringbuf::seekoff

basic_stringbuf::seekpos

Tiers fonctions Original: Non-member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

swap(std::basic_stringbuf) (C++11)

 

std::basic_string<CharT, Traits, Allocator> str() const;	(1)
void str( const std::basic_string<CharT, Traits, Allocator>& s);	(2)

Obtient et définit la chaîne sous-jacente .

Original:

Gets and sets the underlying string.

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1)

Crée et retourne un objet std::basic_string contenant une copie de cette séquence std::basic_stringbuf le caractère sous-jacent. Pour l'entrée-seulement les flux, la chaîne retournée contient les caractères de l'[eback(), egptr()) gamme. Pour les flux d'entrée / sortie ou de sortie uniquement, contient les caractères de pbase() le dernier caractère de la séquence indépendamment de egptr() et epptr() .

Original:

Creates and returns a std::basic_string object containing a copy of this std::basic_stringbuf's underlying character sequence. For input-only streams, the returned string contains the characters from the range [eback(), egptr()). For input/output or output-only streams, contains the characters from pbase() to the last character in the sequence regardless of egptr() and epptr().

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2)

Supprime la séquence de caractères entier sous-jacente de cette std::basic_stringbuf puis configure une nouvelle séquence de caractères sous-jacent contenant une copie du contenu de s. Les pointeurs de std::basic_streambuf sont initialisées comme suit:

Original:

Deletes the entire underlying character sequence of this std::basic_stringbuf and then configures a new underlying character sequence containing a copy of the contents of s. The pointers of std::basic_streambuf are initialized as follows:

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Pour les flux d'entrée (mode & ios_base::in == true), eback() points au premier caractère, gptr() == eback() et egptr() == eback() + s.size(): l'entrée suivante va lire le premier caractère copié à partir s .

Original:

For input streams (mode & ios_base::in == true), eback() points at the first character, gptr() == eback(), and egptr() == eback() + s.size(): the subsequent input will read the first character copied from s.

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Pour les flux de sortie (mode & ios_base::out == true), pbase() points au premier caractère et epptr() >= pbase() + s.size() (epptr est autorisé à pointer loin pour que le sputc() suivante serait pas immédiatement overflow())

Original:

For output streams (mode & ios_base::out == true), pbase() points at the first character and epptr() >= pbase() + s.size() (epptr is allowed to point farther so that the following sputc() wouldn't immediately call overflow())

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Pour les flux append (mode & ios_base::ate == true), pptr() == pbase() + s.size(), de sorte que la sortie suivante sera ajouté au dernier caractère copié à partir s (depuis C++11)

Original:

For append streams (mode & ios_base::ate == true), pptr() == pbase() + s.size(), so that subsequent output will be appended to the last character copied from s (depuis C++11)

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Pour aucun-ajout flux de sortie, pptr() == pbase(), de sorte que la production subséquente écrasera les caractères copiés à partir s .

Original:

For no-appending output streams, pptr() == pbase(), so that subsequent output will overwrite the characters copied from s.

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Paramètres

s

-

un objet chaîne de caractères contenant la séquence de caractères de remplacement Original: a string object holding the replacement character sequence The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Retourne la valeur

1)

Un objet chaîne contenant une copie de cette séquence tampon de caractère sous-jacent .

Original:

A string object holding a copy of this buffer's underlying character sequence.

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2)

(Aucun)

Original:

(none)

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Notes

Cette fonction est généralement accessible via std::basic_stringstream::str() .

Original:

This function is typically accessed through std::basic_stringstream::str().

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Exemple

#include <sstream>
#include <iostream>
int main()
{
    int n;
 
    std::istringstream in;  // could also use in("1 2")
    in.rdbuf()->str("1 2"); // set the get area
    in >> n;
    std::cout << "after reading the first int from \"1 2\", the int is " 
              << n << ", str() = \"" << in.rdbuf()->str() << "\"\n"; // or in.str()
 
    std::ostringstream out("1 2");
    out << 3;
    std::cout << "after writing the int '3' to output stream \"1 2\""
              << ", str() = \"" << out.str() << "\"\n";
 
    std::ostringstream ate("1 2", std::ios_base::ate); // C++11
    ate << 3;
    std::cout << "after writing the int '3' to append stream \"1 2\""
              << ", str() = \"" << ate.str() << "\"\n";
}

Résultat :

after reading the first int from "1 2", the int is 1, str() = "1 2"
after writing the int '3' to output stream "1 2", str() = "3 2"
after writing the int '3' to append stream "1 2", str() = "1 23"

Voir aussi

str	obtient ou définit le contenu de l'objet chaîne de périphérique sous-jacent Original: gets or sets the contents of underlying string device object The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction membre publique de std::basic_stringstream)