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Input/output library

Da cppreference.com
< cpp


 
 
De entrada / saída da biblioteca
I / O manipuladores
C estilo de I / O
Buffers
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(obsoleta)
Streams
Original:
Streams
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Abstrações
Original:
Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
File I / O
Original:
File I/O
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basic_ifstream
basic_ofstream
basic_fstream
Cordas I / O
Original:
String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Matriz de I / O
Original:
Array I/O
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istrstream(obsoleta)
ostrstream(obsoleta)
strstream(obsoleta)
Tipos
Original:
Types
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streamoff
streamsize
fpos
Interface de categoria de erro
Original:
Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
C + + inclui duas entradas / saídas bibliotecas: uma moderna, baseada em fluxo de biblioteca de E / S e do conjunto padrão de estilo C / S funções.
Original:
C++ includes two input/output libraries: a modern, stream-based I/O library and the standard set of C-style I/O functions.
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Índice

[editar] Baseada em fluxo de I / O

O fluxo baseado em biblioteca de entrada / saída é organizado em torno de entrada resumo / dispositivos de saída. Estes dispositivos abstratos permitir que o mesmo código para manipular a entrada / saída de arquivos, fluxos de memória ou dispositivos adaptador personalizado que executam operações arbitrárias (de compressão, por exemplo) na mosca.
Original:
The stream-based input/output library is organized around abstract input/output devices. These abstract devices allow the same code to handle input/output to files, memory streams, or custom adaptor devices that perform arbitrary operations (e.g. compression) on the fly.
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A maior parte das classes são templated, para que possam ser adaptadas a qualquer tipo de carácter básico. Typedefs separados são fornecidos para os tipos mais comuns de caráter básico (char e wchar_t). As aulas são organizadas em a seguinte hierarquia:
Original:
Most of the classes are templated, so they can be adapted to any basic character type. Separate typedefs are provided for the most common basic character types (char and wchar_t). The classes are organized into the following hierarchy:
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cpp/io/ios basecpp/io/basic ioscpp/io/basic istreamcpp/io/basic ifstreamcpp/io/basic istringstreamcpp/io/basic ostreamcpp/io/basic ofstreamcpp/io/basic ostringstreamcpp/io/basic fstreamcpp/io/basic stringstreamcpp/io/basic iostreamstd-io-complete-inheritance.svg
Sobre esta imagem

Inheritance diagram

Abstração
Original:
Abstraction
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gerencia bandeiras de formatação e de entrada / saída exceções
Original:
manages formatting flags and input/output exceptions
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(classe)
gerencia um buffer de fluxo arbitrária
Original:
manages an arbitrary stream buffer
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(modelo de classe)
abstrai um dispositivo bruto
Original:
abstracts a raw device
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(modelo de classe)
envolve um determinado dispositivo abstrato (std::basic_streambuf)
e oferece alto nível de interface de entrada
Original:
wraps a given abstract device (std::basic_streambuf)
and provides high-level input interface
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(modelo de classe)
envolve um determinado dispositivo abstrato (std::basic_streambuf)
e oferece alto nível de interface de saída
Original:
wraps a given abstract device (std::basic_streambuf)
and provides high-level output interface
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(modelo de classe)
envolve um determinado dispositivo abstrato (std::basic_streambuf)
e oferece alto nível de entrada / interface de saída
Original:
wraps a given abstract device (std::basic_streambuf)
and provides high-level input/output interface
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(modelo de classe)
File I / 0 implementação
Original:
File I/0 implementation
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implementa dispositivo de arquivo RAW
Original:
implements raw file device
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(modelo de classe)
implementa alto nível de arquivo operações de entrada de fluxo
Original:
implements high-level file stream input operations
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(modelo de classe)
implementa alto nível de arquivo operações de saída de fluxo
Original:
implements high-level file stream output operations
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(modelo de classe)
implementa alto nível de ficheiros de fluxo de entrada / saída operações
Original:
implements high-level file stream input/output operations
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(modelo de classe)
Cordas I / 0 implementação
Original:
String I/0 implementation
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implementa dispositivo de corda crua
Original:
implements raw string device
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(modelo de classe)
implementa alto nível cordas operações de entrada de fluxo
Original:
implements high-level string stream input operations
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(modelo de classe)
implementa alto nível cordas operações de saída de fluxo
Original:
implements high-level string stream output operations
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(modelo de classe)
implementa alto nível de cadeia de fluxo de entrada / saída operações
Original:
implements high-level string stream input/output operations
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(modelo de classe)
Matriz de I / O implementações
Original:
Array I/O implementations
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(obsoleta)
implementa dispositivo de matriz de caracteres brutos
Original:
implements raw character array device
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(classe)
(obsoleta)
implementa operações de introdução de caracteres da matriz
Original:
implements character array input operations
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(classe)
(obsoleta)
implementa operações de caracteres de saída da matriz
Original:
implements character array output operations
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(classe)
(obsoleta)
implementa caracteres de matriz de entrada / saída operações
Original:
implements character array input/output operations
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(classe)

[editar] Typedefs

Os typedefs seguintes para tipos de caracteres comuns são fornecidos:
Original:
The following typedefs for common character types are provided:
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|<source lang="cpp">}}
{{tr|typedef basic_ios <char> ios;|typedef basic_ios<char>                ios;}}
{{tr|typedef basic_ios <wchar_t> wios;|typedef basic_ios<wchar_t>            wios;}}
 
{{tr|streambuf <char> typedef basic_streambuf;|typedef basic_streambuf<char>     streambuf;}}
{{tr|wstreambuf <wchar_t> typedef basic_streambuf;|typedef basic_streambuf<wchar_t> wstreambuf;}}
{{tr|typedef basic_filebuf <char> filebuf;|typedef basic_filebuf<char>         filebuf;}}
{{tr|typedef basic_filebuf <wchar_t> wfilebuf;|typedef basic_filebuf<wchar_t>     wfilebuf;}}
{{tr|typedef basic_stringbuf <char> stringbuf;|typedef basic_stringbuf<char>     stringbuf;}}
{{tr|typedef basic_stringbuf <wchar_t> wstringbuf;|typedef basic_stringbuf<wchar_t> wstringbuf;}}
 
{{tr|istream <char> typedef basic_istream;|typedef basic_istream<char>         istream;}}
{{tr|typedef basic_istream <wchar_t> wistream;|typedef basic_istream<wchar_t>     wistream;}}
{{tr|typedef basic_ostream <char> ostream;|typedef basic_ostream<char>         ostream;}}
{{tr|typedef basic_ostream <wchar_t> wostream;|typedef basic_ostream<wchar_t>     wostream;}}
{{tr|typedef basic_iostream <char> iostream,|typedef basic_iostream<char>       iostream;}}
{{tr|typedef basic_iostream <wchar_t> wiostream;|typedef basic_iostream<wchar_t>   wiostream;}}
 
{{tr|typedef basic_ifstream <char> ifstream;|typedef basic_ifstream<char>       ifstream;}}
{{tr|typedef basic_ifstream <wchar_t> wifstream;|typedef basic_ifstream<wchar_t>   wifstream;}}
{{tr|typedef basic_ofstream <char> ofstream,|typedef basic_ofstream<char>       ofstream;}}
{{tr|typedef basic_ofstream <wchar_t> wofstream;|typedef basic_ofstream<wchar_t>   wofstream;}}
{{tr|typedef basic_fstream <char> fstream;|typedef basic_fstream<char>         fstream;}}
{{tr|typedef basic_fstream <wchar_t> wfstream;|typedef basic_fstream<wchar_t>     wfstream;}}
 
{{tr|typedef basic_istringstream <char> istringstream;|typedef basic_istringstream<char>     istringstream;}}
{{tr|typedef basic_istringstream <wchar_t> wistringstream;|typedef basic_istringstream<wchar_t> wistringstream;}}
{{tr|typedef basic_ostringstream <char> ostringstream;|typedef basic_ostringstream<char>     ostringstream;}}
{{tr|typedef basic_ostringstream <wchar_t> wostringstream;|typedef basic_ostringstream<wchar_t> wostringstream;}}
{{tr|typedef basic_stringstream <char> stringstream;|typedef basic_stringstream<char>       stringstream;}}
{{tr|typedef basic_stringstream <wchar_t> wstringstream;|typedef basic_stringstream<wchar_t>   wstringstream;}}
{{tr|</ Source>|
Original:
{{{2}}}
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Padrão predefinidas objetos de fluxo:
Original:
Predefined standard stream objects:
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|<source lang="cpp">}}
{{tr|extern istream cin; entrada / / padrão (stdin)|extern  istream  cin;   //standard input (stdin)}}
{{tr|extern wistream wcin,|extern wistream wcin;}}
{{tr|extern ostream cout; saída / / padrão (stdout)|extern  ostream  cout;  //standard output (stdout)}}
{{tr|extern wostream wcout,|extern wostream wcout;}}
{{tr|extern ostream cerr, erro / / padrão (stderr)|extern  ostream  cerr;  //standard error (stderr)}}
{{tr|extern wostream wcerr,|extern wostream wcerr;}}
{{tr|tamanco extern ostream; / log / padrão (stdlog)|extern  ostream  clog;  //standard log (stdlog)}}
{{tr|extern wostream wclog,|extern wostream wclog;}}
{{tr|</ Source>|
Original:
{{{2}}}
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[editar] I / O Manipuladores

O fluxo baseado biblioteca de I / O utiliza I / O manipuladores (eg std::boolalpha, std::hex, etc) para controlar a forma como se comportam correntes.
Original:
The stream-based I/O library uses I / O manipuladores (e.g. std::boolalpha, std::hex, etc.) to control how streams behave.
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[editar] Tipos

Os seguintes tipos auxiliares são definidos:
Original:
The following auxiliary types are defined:
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Defined in header <ios>
representa a posição arquivo / stream relativa (deslocamento de fpos), suficientes para representar qualquer tamanho de arquivo
Original:
represents relative file/stream position (offset from fpos), sufficient to represent any file size
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(typedef)
representa o número de caracteres transferidos de uma operação I / O, ou o tamanho de um tampão de I / O
Original:
represents the number of characters transferred in an I/O operation or the size of an I/O buffer
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(typedef)
representa a posição absoluta em um córrego ou um arquivo
Original:
represents absolute position in a stream or a file
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(modelo de classe)
Quatro especializações de std::fpos são fornecidos:
Original:
Four specializations of std::fpos are provided:
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Defined in header <ios>
Tipo
Original:
Type
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Definition
streampos std::fpos<std::char_traits<char>::state_type>
u16streampos std::fpos<std::char_traits<char16_t>::state_type>
u32streampos std::fpos<std::char_traits<char32_t>::state_type>
wstreampos std::fpos<std::char_traits<wchar_t>::state_type>

[editar] Interface de categoria de erro

Defined in header <ios>
(C++11)
O erro de IO códigos de fluxo
Original:
the IO stream error codes
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(enum) [edit]
identifica a categoria de erro iostream
Original:
identifies the iostream error category
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(função) [edit]

[editar] C-estilo IO

C + + também inclui o entrada / saída de funções definidas por C, como std::fopen, std::getc, etc
Original:
C++ also includes the entrada / saída de funções definidas por C, such as std::fopen, std::getc, etc.
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