Ogre::FileHandleDataStream Class Reference

Common subclass of DataStream for handling data from C-style file handles. More...

#include <OgreDataStream.h>

Inheritance diagram for Ogre::FileHandleDataStream:

Public Member Functions
	FileHandleDataStream (const String &name, FILE *handle, uint16 accessMode=READ)
	Create named stream from a C file handle. More...
	FileHandleDataStream (FILE *handle, uint16 accessMode=READ)
	Create stream from a C file handle. More...
	~FileHandleDataStream () override
void	close () override
	Close the stream; this makes further operations invalid. More...
bool	eof () const override
	Returns true if the stream has reached the end. More...
size_t	read (void *buf, size_t count) override
	Read the requisite number of bytes from the stream, stopping at the end of the file. More...
void	seek (size_t pos) override
	Repositions the read point to a specified byte. More...
void	skip (long count) override
	Skip a defined number of bytes. More...
size_t	tell () const override
	Returns the current byte offset from beginning. More...
size_t	write (const void *buf, size_t count) override
	Write the requisite number of bytes from the stream (only applicable to streams that are not read-only) More...
Public Member Functions inherited from Ogre::DataStream
	DataStream (const String &name, uint16 accessMode=READ)
	Constructor for creating named streams. More...
	DataStream (uint16 accessMode=READ)
	Constructor for creating unnamed streams. More...
virtual	~DataStream ()
uint16	getAccessMode () const
	Gets the access mode of the stream. More...
virtual String	getAsString ()
	Returns a String containing the entire stream. More...
virtual String	getLine (bool trimAfter=true)
	Returns a String containing the next line of data, optionally trimmed for whitespace. More...
const String &	getName ()
	Returns the name of the stream, if it has one. More...
virtual bool	isReadable () const
	Reports whether this stream is readable. More...
virtual bool	isWriteable () const
	Reports whether this stream is writeable. More...
template<typename T >
DataStream &	operator>> (T &val)
virtual size_t	readLine (char *buf, size_t maxCount, const String &delim="\n")
	Get a single line from the stream. More...
size_t	size () const
	Returns the total size of the data to be read from the stream, or 0 if this is indeterminate for this stream. More...
virtual size_t	skipLine (const String &delim="\n")
	Skip a single line from the stream. More...

Additional Inherited Members
Public Types inherited from Ogre::DataStream
enum	AccessMode { READ = 1 , WRITE = 2 }

Detailed Description

Common subclass of DataStream for handling data from C-style file handles.

Remarks

Use of this class is generally discouraged; if you want to wrap file access in a DataStream, you should definitely be using the C++ friendly FileStreamDataStream. However, since there are quite a few applications and libraries still wedded to the old FILE handle access, this stream wrapper provides some backwards compatibility.

Constructor & Destructor Documentation

FileHandleDataStream() [1/2]

Ogre::FileHandleDataStream::FileHandleDataStream	(	FILE *	handle,
		uint16	accessMode = READ
	)

Create stream from a C file handle.

FileHandleDataStream() [2/2]

Ogre::FileHandleDataStream::FileHandleDataStream	(	const String &	name,
		FILE *	handle,
		uint16	accessMode = READ
	)

Create named stream from a C file handle.

~FileHandleDataStream()

Ogre::FileHandleDataStream::~FileHandleDataStream ( )

override

Member Function Documentation

close()

void Ogre::FileHandleDataStream::close ( )

overridevirtual

Close the stream; this makes further operations invalid.

Implements Ogre::DataStream.

eof()

bool Ogre::FileHandleDataStream::eof ( ) const

overridevirtual

Returns true if the stream has reached the end.

Implements Ogre::DataStream.

read()

size_t Ogre::FileHandleDataStream::read ( void *  buf, size_t  count  )

overridevirtual

Read the requisite number of bytes from the stream, stopping at the end of the file.

Parameters

buf	Reference to a buffer pointer
count	Number of bytes to read

Returns

The number of bytes read

Implements Ogre::DataStream.

seek()

void Ogre::FileHandleDataStream::seek ( size_t  pos )

overridevirtual

Repositions the read point to a specified byte.

Implements Ogre::DataStream.

skip()

void Ogre::FileHandleDataStream::skip ( long  count )

overridevirtual

Skip a defined number of bytes.

This can also be a negative value, in which case the file pointer rewinds a defined number of bytes.

Implements Ogre::DataStream.

tell()

size_t Ogre::FileHandleDataStream::tell ( ) const

overridevirtual

Returns the current byte offset from beginning.

Implements Ogre::DataStream.

write()

size_t Ogre::FileHandleDataStream::write ( const void *  buf, size_t  count  )

overridevirtual

Write the requisite number of bytes from the stream (only applicable to streams that are not read-only)

Parameters

buf	Pointer to a buffer containing the bytes to write
count	Number of bytes to write

Returns

The number of bytes written

Reimplemented from Ogre::DataStream.

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The documentation for this class was generated from the following file:

• OgreDataStream.h