ara::per::ReadWriteAccessor类 参考

用于读写文件数据的类 更多...

#include <read_write_accessor.h>

类 ara::per::ReadWriteAccessor 继承关系图:

ara::per::ReadWriteAccessor 的协作图:

Public 成员函数
	ReadWriteAccessor (const std::shared_ptr< fileaccess::ReadAccessorImpl > &impl_ptr, std::shared_ptr< fileaccess::IFileStream > &stream)
	construtor of ReadWriteAccessor 更多...
	ReadWriteAccessor ()=delete
	The default constructor for ReadWriteAccessor shall not be used. 更多...
ara::core::Result< void >	SyncToFile () noexcept
	Triggers flushing of the current file content to the physical storage. 更多...
ara::core::Result< void >	SetFileSize (std::uint64_t size) noexcept
	Reduces the size of the file to ’size’, effectively removing the current content of the file beyond this size. 更多...
ara::core::Result< void >	WriteText (ara::core::StringView s) noexcept
	Writes the content of a StringView to the file 更多...
ara::core::Result< void >	WriteBinary (ara::core::Span< const ara::core::Byte > b) noexcept
	Writes the content of a Span of Byte to the file. 更多...
ReadWriteAccessor &	operator<< (ara::core::StringView s) noexcept
	Writes the content of a StringView to the file. 更多...
Public 成员函数 继承自 ara::per::ReadAccessor
	ReadAccessor (const std::shared_ptr< fileaccess::ReadAccessorImpl > &impl_ptr)
	construtor of ReadAccessor 更多...
	ReadAccessor ()=delete
	The default constructor for ReadAccessor shall not be used. 更多...
	ReadAccessor (ReadAccessor &&ra)=delete
	The move constructor for ReadAccessor shall not be used. 更多...
ReadAccessor &	operator= (ReadAccessor &&ra) &=delete
	The move assignment operator for ReadAccessor shall not be used. 更多...
	ReadAccessor (const ReadAccessor &)=delete
	The copy constructor for ReadAccessor shall not be used. 更多...
ReadAccessor &	operator= (const ReadAccessor &)=delete
	The copy assignment operator for ReadAccessor shall not be used. 更多...
	~ReadAccessor () noexcept=default
	Destructor for ReadAccessor. 更多...
ara::core::Result< char >	PeekChar () noexcept
	Returns the character at the current position of the file. 更多...
ara::core::Result< ara::core::Byte >	PeekByte () const noexcept
	Returns the byte at the current position of the file. 更多...
ara::core::Result< char >	GetChar () noexcept
	Returns the character at the current position of the file, advancing the current position 更多...
ara::core::Result< ara::core::Byte >	GetByte () noexcept
	Returns the byte at the current position of the file, advancing the current position. 更多...
ara::core::Result< ara::core::String >	ReadText (uint64_t n) noexcept
	Reads a number of characters into a String, starting from the current position. 更多...
ara::core::Result< ara::core::String >	ReadText () noexcept
	Reads all remaining characters into a String, starting from the current position. 更多...
ara::core::Result< ara::core::Vector< ara::core::Byte > >	ReadBinary () noexcept
	Reads all remaining bytes into a Vector of Byte, starting from the current position. 更多...
ara::core::Result< ara::core::Vector< ara::core::Byte > >	ReadBinary (uint64_t n) noexcept
	Reads a number of bytes into a Vector of Byte, starting from the current position. 更多...
ara::core::Result< ara::core::String >	ReadLine (char delimiter='\n') noexcept
	Reads a complete line of characters into a String, advancing the current position accordingly 更多...
uint64_t	GetPosition () const noexcept
	Returns the current position relative to the beginning of the file. 更多...
ara::core::Result< void >	SetPosition (uint64_t position) noexcept
	Sets the current position relative to the beginning of the file. 更多...
ara::core::Result< uint64_t >	MovePosition (Origin const origin, int64_t const offset) noexcept
	Moves the current position in the file relative to the Origin. 更多...
bool	IsEof () const noexcept
	Checks if the current position is at end of file.。 更多...
uint64_t	GetSize () const noexcept
	Returns the current size of a file in bytes 更多...

详细描述

用于读写文件数据的类

Swsid

SWS_PER_00343

符合标准

Yes

非标原因

N/A

种类

class

符号

ara::per::ReadWriteAccessor

范围

namespace ara::per

基类

N/A

分类

ara

头文件

注解

代码示例及类句柄的获取说明： 见FileStorage class相应的示例获取的proxy句柄。 auto accessor = proxy->OpenFileReadWrite(StringView("filename")); if (!accessor) { 以读写方式打开文件失败，信息为:accessor.Error().Message(); 相应处理 } auto ac = std::move(accessor).Value(); ac即为此类的指针。

模板参数

N/A	@uptrace{N/A}

在文件 第 行定义.

构造及析构函数说明

ReadWriteAccessor()

ara::per::ReadWriteAccessor::ReadWriteAccessor ( const std::shared_ptr< fileaccess::ReadAccessorImpl > &  impl_ptr, std::shared_ptr< fileaccess::IFileStream > &  stream  )

inline

construtor of ReadWriteAccessor

模板参数

N/A

参数

[in]	impl_ptr	shared_ptr of ReadAccessorImpl class
[in]	stream	shared_ptr of IFileStream class
[out]	N/A
[in,out]	N/A

返回

N/A

注解

construtor of ReadWriteAccessor

异常

N/A

Swsid

N/A

符合标准

yes

非标原因

N/A

种类

function

可见

public

线程安全

no

Fireandforget

no

错误

N/A

头文件

ara/per/readwrite_accessor.h

异常安全

N/A

分类

ara

范围

namespace ara::per::ReadWriteAccessor @uptrace{N/A}

在文件 第 行定义.