Buffered binary input. More...

#include <JBufferedIO.hh>

Inheritance diagram for JIO::JBufferedReader:

Public Member Functions
	JBufferedReader (JReader *__in, const int __size=1048576)
	Constructor. More...

	~JBufferedReader ()
	Destructor. More...

virtual bool	getStatus () const
	Status of reader. More...

virtual void	clear ()
	Clear status of reader. More...

virtual int	read (char *zbuf, int n)
	Read byte array. More...

JReader &	operator>> (JSerialisable &object)
	Read serialisable data object. More...

JReader &	operator>> (bool &value)

JReader &	operator>> (char &value)

JReader &	operator>> (unsigned char &value)

JReader &	operator>> (short &value)

JReader &	operator>> (unsigned short &value)

JReader &	operator>> (int &value)

JReader &	operator>> (unsigned int &value)

JReader &	operator>> (long int &value)

JReader &	operator>> (unsigned long int &value)

JReader &	operator>> (long long int &value)

JReader &	operator>> (unsigned long long int &value)

JReader &	operator>> (float &value)

JReader &	operator>> (double &value)

JReader &	operator>> (long double &value)

JReader &	load (JSerialisable &object)
	Read object. More...

template<class T >
JReader &	load (T &object)
	Read object. More...

	operator bool () const
	Type conversion operator. More...

bool	operator! () const
	Negated status of this object. More...

Protected Attributes
JLANG::JSinglePointer< JReader >	in

char *	buffer
	internal buffer More...

int	size
	size of internal buffer More...

int	pos
	pointer to begin of available data More...

int	ls
	pointer to end of available data More...

bool	eof
	end of file More...

Detailed Description

Buffered binary input.

This class implements the JReader interface.

Definition at line 25 of file JBufferedIO.hh.

Constructor & Destructor Documentation

JIO::JBufferedReader::JBufferedReader	(	JReader *	__in,
		const int	__size = `1048576`
	)

inline

Constructor.

Note that this object owns the reader pointed to.

Parameters

__in	pointer to reader
__size	size of internal buffer

Definition at line 36 of file JBufferedIO.hh.

                                                                :
       in(__in)
     {
       size   = std::max(__size, 1024);
       buffer = new char[size];
 
       pos = 0;
       ls  = 0;
       eof = true;
     }

JIO::JBufferedReader::~JBufferedReader ( )

inline

Destructor.

Definition at line 51 of file JBufferedIO.hh.

     {
       delete [] buffer;
     }

Member Function Documentation

virtual bool JIO::JBufferedReader::getStatus ( ) const

inlinevirtual

Status of reader.

Returns: status of this reader

Implements JLANG::JAbstractObjectStatus.

Definition at line 62 of file JBufferedIO.hh.

     { 
       return in->getStatus() || !eof;
     }

virtual void JIO::JBufferedReader::clear ( )

inlinevirtual

Clear status of reader.

Reimplemented from JIO::JReader.

Definition at line 71 of file JBufferedIO.hh.

     {
       in->clear();
     }

virtual int JIO::JBufferedReader::read	(	char *	zbuf,
		int	n
	)

inlinevirtual

Read byte array.

Parameters

zbuf	pointer to byte array
n	number of bytes

Returns: number of bytes

Implements JLANG::JBinaryInput.

Definition at line 84 of file JBufferedIO.hh.

     { 
       for (int i = 0; i != n; ) {
 
         int m = n - i;
 
         if (m > ls - pos) {
           
           memmove(buffer, buffer + pos, ls - pos);
           
           ls  -= pos;
           pos  = 0;
           ls  += in->read(buffer + ls, size - ls); 
 
           if (m > ls) {
 
             if (ls == 0) {
 
               eof = true;
 
               return n - i;
             }
 
             m = ls;
           }
         }
 
         memcpy(zbuf + i, buffer + pos, m);
         
         i   += m;
         pos += m;
       }
 
       eof = false;
 
       return n;
     }

JReader& JIO::JReader::operator>> ( JSerialisable & object )

inlineinherited

Read serialisable data object.

Parameters

object serialisable data object

Returns: JReader

Definition at line 80 of file JSerialisable.hh.

     { 
       return object.read(*this); 
     }

JReader& JIO::JReader::operator>> ( bool & value )

inlineinherited

Definition at line 86 of file JSerialisable.hh.

86 { read((char*) &value, sizeof(bool)); return *this; }

JLANG::JBinaryInput::read

virtual int read(char *buffer, const int length)=0

Read byte array.

JReader& JIO::JReader::operator>> ( char & value )

inlineinherited

Definition at line 87 of file JSerialisable.hh.

87 { read((char*) &value, sizeof(char)); return *this; }

JLANG::JBinaryInput::read

virtual int read(char *buffer, const int length)=0

Read byte array.

JReader& JIO::JReader::operator>> ( unsigned char & value )

inlineinherited

Definition at line 88 of file JSerialisable.hh.

88 { read((char*) &value, sizeof(unsigned char)); return *this; }

JLANG::JBinaryInput::read

virtual int read(char *buffer, const int length)=0

Read byte array.

JReader& JIO::JReader::operator>> ( short & value )

inlineinherited

Definition at line 89 of file JSerialisable.hh.

89 { read((char*) &value, sizeof(short)); return *this; }

JLANG::JBinaryInput::read

virtual int read(char *buffer, const int length)=0

Read byte array.

JReader& JIO::JReader::operator>> ( unsigned short & value )

inlineinherited

Definition at line 90 of file JSerialisable.hh.

90 { read((char*) &value, sizeof(unsigned short)); return *this; }

JLANG::JBinaryInput::read

virtual int read(char *buffer, const int length)=0

Read byte array.

JReader& JIO::JReader::operator>> ( int & value )

inlineinherited

Definition at line 91 of file JSerialisable.hh.

91 { read((char*) &value, sizeof(int)); return *this; }

JLANG::JBinaryInput::read

virtual int read(char *buffer, const int length)=0

Read byte array.

JReader& JIO::JReader::operator>> ( unsigned int & value )

inlineinherited

Definition at line 92 of file JSerialisable.hh.

92 { read((char*) &value, sizeof(unsigned int)); return *this; }

JLANG::JBinaryInput::read

virtual int read(char *buffer, const int length)=0

Read byte array.

JReader& JIO::JReader::operator>> ( long int & value )

inlineinherited

Definition at line 93 of file JSerialisable.hh.

93 { read((char*) &value, sizeof(long int)); return *this; }

JLANG::JBinaryInput::read

virtual int read(char *buffer, const int length)=0

Read byte array.

JReader& JIO::JReader::operator>> ( unsigned long int & value )

inlineinherited

Definition at line 94 of file JSerialisable.hh.

94 { read((char*) &value, sizeof(unsigned long int)); return *this; }

JLANG::JBinaryInput::read

virtual int read(char *buffer, const int length)=0

Read byte array.

JReader& JIO::JReader::operator>> ( long long int & value )

inlineinherited

Definition at line 95 of file JSerialisable.hh.

95 { read((char*) &value, sizeof(long long int)); return *this; }

JLANG::JBinaryInput::read

virtual int read(char *buffer, const int length)=0

Read byte array.

JReader& JIO::JReader::operator>> ( unsigned long long int & value )

inlineinherited

Definition at line 96 of file JSerialisable.hh.

96 { read((char*) &value, sizeof(unsigned long long int)); return *this; }

JLANG::JBinaryInput::read

virtual int read(char *buffer, const int length)=0

Read byte array.

JReader& JIO::JReader::operator>> ( float & value )

inlineinherited

Definition at line 97 of file JSerialisable.hh.

97 { read((char*) &value, sizeof(float)); return *this; }

JLANG::JBinaryInput::read

virtual int read(char *buffer, const int length)=0

Read byte array.

JReader& JIO::JReader::operator>> ( double & value )

inlineinherited

Definition at line 98 of file JSerialisable.hh.

98 { read((char*) &value, sizeof(double)); return *this; }

JLANG::JBinaryInput::read

virtual int read(char *buffer, const int length)=0

Read byte array.

JReader& JIO::JReader::operator>> ( long double & value )

inlineinherited

Definition at line 99 of file JSerialisable.hh.

99 { read((char*) &value, sizeof(long double)); return *this; }

JLANG::JBinaryInput::read

virtual int read(char *buffer, const int length)=0

Read byte array.

JReader& JIO::JReader::load ( JSerialisable & object )

inlineinherited

Read object.

Parameters

object object

Returns: this reader

Definition at line 108 of file JSerialisable.hh.

     {
       return object.read(*this);
     }

template<class T >

JReader& JIO::JReader::load ( T & object )

inlineinherited

Read object.

Parameters

object object

Returns: this reader

Definition at line 121 of file JSerialisable.hh.

     {
       return *this >> object;
     }

JLANG::JAbstractObjectStatus::operator bool ( ) const

inlineinherited

Type conversion operator.

Returns: status of this object

Definition at line 33 of file JAbstractObjectStatus.hh.

     {
       return this->getStatus();
     }

bool JLANG::JAbstractObjectStatus::operator! ( ) const

inlineinherited

Negated status of this object.

Returns: negated status of this object

Definition at line 44 of file JAbstractObjectStatus.hh.

     {
       return !(this->getStatus());
     }

Member Data Documentation

JLANG::JSinglePointer<JReader> JIO::JBufferedReader::in

protected

Definition at line 124 of file JBufferedIO.hh.

char* JIO::JBufferedReader::buffer

protected

internal buffer

Definition at line 126 of file JBufferedIO.hh.

int JIO::JBufferedReader::size

protected

size of internal buffer

Definition at line 127 of file JBufferedIO.hh.

int JIO::JBufferedReader::pos

protected

pointer to begin of available data

Definition at line 128 of file JBufferedIO.hh.

int JIO::JBufferedReader::ls

protected

pointer to end of available data

Definition at line 129 of file JBufferedIO.hh.

bool JIO::JBufferedReader::eof

protected

end of file

Definition at line 130 of file JBufferedIO.hh.

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

JBufferedIO.hh

Public Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation