Jpp
Public Member Functions | Protected Attributes | List of all members
JIO::JFileStreamReader Class Reference

Binary buffered file input. More...

#include <JFileStreamIO.hh>

Inheritance diagram for JIO::JFileStreamReader:
JIO::JBufferedReader JIO::JReader JLANG::JBinaryInput JLANG::JAbstractObjectStatus

Public Member Functions

 JFileStreamReader ()
 Default constructor. More...
 
 JFileStreamReader (const char *file_name, const int size=1048576)
 Constructor. More...
 
void open (const char *file_name)
 Open file. More...
 
bool operator! () const
 Negated status of this object. 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>> (long long int &value)
 
JReader & operator>> (unsigned long long int &value)
 
JReader & operator>> (float &value)
 
JReader & operator>> (double &value)
 
JReader & operator>> (long double &value)
 
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>> (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

Binary buffered file input.

Definition at line 22 of file JFileStreamIO.hh.

Constructor & Destructor Documentation

◆ JFileStreamReader() [1/2]

JIO::JFileStreamReader::JFileStreamReader ( )
inline

Default constructor.

Definition at line 36 of file JFileStreamIO.hh.

36  :
37  std::ifstream(),
38  JBufferedReader(new JStreamReader(static_cast<std::ifstream&>(*this)))
39  {}

◆ JFileStreamReader() [2/2]

JIO::JFileStreamReader::JFileStreamReader ( const char *  file_name,
const int  size = 1048576 
)
inline

Constructor.

Parameters
file_namefile name
sizesize of internal buffer

Definition at line 48 of file JFileStreamIO.hh.

49  :
50  std::ifstream (),
51  JBufferedReader(new JStreamReader(static_cast<std::ifstream&>(*this)), size)
52  {
53  open(file_name);
54  }

Member Function Documentation

◆ open()

void JIO::JFileStreamReader::open ( const char *  file_name)
inline

Open file.

Parameters
file_namefile name

Definition at line 62 of file JFileStreamIO.hh.

63  {
64  static_cast<std::ifstream*>(this)->open(file_name, std::ios::binary);
65  }

◆ operator!() [1/2]

bool JLANG::JAbstractObjectStatus::operator!
inline

Negated status of this object.

Returns
negated status of this object

Definition at line 44 of file JAbstractObjectStatus.hh.

45  {
46  return !(this->getStatus());
47  }

◆ operator>>() [1/28]

JReader& JIO::JReader::operator>>
inline

Read serialisable data object.

Parameters
objectserialisable data object
Returns
JReader

Definition at line 80 of file JSerialisable.hh.

81  {
82  return object.read(*this);
83  }

◆ operator>>() [2/28]

JReader& JIO::JReader::operator>>
inline

Definition at line 86 of file JSerialisable.hh.

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

◆ operator>>() [3/28]

JReader& JIO::JReader::operator>>
inline

Definition at line 87 of file JSerialisable.hh.

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

◆ operator>>() [4/28]

JReader& JIO::JReader::operator>>
inline

Definition at line 88 of file JSerialisable.hh.

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

◆ operator>>() [5/28]

JReader& JIO::JReader::operator>>
inline

Definition at line 89 of file JSerialisable.hh.

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

◆ operator>>() [6/28]

JReader& JIO::JReader::operator>>
inline

Definition at line 90 of file JSerialisable.hh.

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

◆ operator>>() [7/28]

JReader& JIO::JReader::operator>>
inline

Definition at line 91 of file JSerialisable.hh.

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

◆ operator>>() [8/28]

JReader& JIO::JReader::operator>>
inline

Definition at line 92 of file JSerialisable.hh.

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

◆ operator>>() [9/28]

JReader& JIO::JReader::operator>>
inline

Definition at line 93 of file JSerialisable.hh.

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

◆ operator>>() [10/28]

JReader& JIO::JReader::operator>>
inline

Definition at line 94 of file JSerialisable.hh.

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

◆ operator>>() [11/28]

JReader& JIO::JReader::operator>>
inline

Definition at line 95 of file JSerialisable.hh.

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

◆ operator>>() [12/28]

JReader& JIO::JReader::operator>>
inline

Definition at line 96 of file JSerialisable.hh.

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

◆ operator>>() [13/28]

JReader& JIO::JReader::operator>>
inline

Definition at line 97 of file JSerialisable.hh.

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

◆ operator>>() [14/28]

JReader& JIO::JReader::operator>>
inline

Definition at line 98 of file JSerialisable.hh.

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

◆ getStatus()

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

Status of reader.

Returns
status of this reader

Implements JLANG::JAbstractObjectStatus.

Definition at line 62 of file JBufferedIO.hh.

63  {
64  return in->getStatus() || !eof;
65  }

◆ clear()

virtual void JIO::JBufferedReader::clear ( )
inlinevirtualinherited

Clear status of reader.

Reimplemented from JIO::JReader.

Definition at line 71 of file JBufferedIO.hh.

72  {
73  in->clear();
74  }

◆ read()

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

Read byte array.

Parameters
zbufpointer to byte array
nnumber of bytes
Returns
number of bytes

Implements JLANG::JBinaryInput.

Definition at line 84 of file JBufferedIO.hh.

85  {
86  for (int i = 0; i != n; ) {
87 
88  int m = n - i;
89 
90  if (m > ls - pos) {
91 
92  memmove(buffer, buffer + pos, ls - pos);
93 
94  ls -= pos;
95  pos = 0;
96  ls += in->read(buffer + ls, size - ls);
97 
98  if (m > ls) {
99 
100  if (ls == 0) {
101 
102  eof = true;
103 
104  return n - i;
105  }
106 
107  m = ls;
108  }
109  }
110 
111  memcpy(zbuf + i, buffer + pos, m);
112 
113  i += m;
114  pos += m;
115  }
116 
117  eof = false;
118 
119  return n;
120  }

◆ operator>>() [15/28]

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

Read serialisable data object.

Parameters
objectserialisable data object
Returns
JReader

Definition at line 80 of file JSerialisable.hh.

81  {
82  return object.read(*this);
83  }

◆ operator>>() [16/28]

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

Definition at line 86 of file JSerialisable.hh.

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

◆ operator>>() [17/28]

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

Definition at line 87 of file JSerialisable.hh.

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

◆ operator>>() [18/28]

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; }

◆ operator>>() [19/28]

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

Definition at line 89 of file JSerialisable.hh.

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

◆ operator>>() [20/28]

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; }

◆ operator>>() [21/28]

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

Definition at line 91 of file JSerialisable.hh.

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

◆ operator>>() [22/28]

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; }

◆ operator>>() [23/28]

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; }

◆ operator>>() [24/28]

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

Definition at line 94 of file JSerialisable.hh.

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

◆ operator>>() [25/28]

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

Definition at line 95 of file JSerialisable.hh.

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

◆ operator>>() [26/28]

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

Definition at line 96 of file JSerialisable.hh.

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

◆ operator>>() [27/28]

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

Definition at line 97 of file JSerialisable.hh.

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

◆ operator>>() [28/28]

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

Definition at line 98 of file JSerialisable.hh.

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

◆ load() [1/2]

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

Read object.

Parameters
objectobject
Returns
this reader

Definition at line 107 of file JSerialisable.hh.

108  {
109  return object.read(*this);
110  }

◆ load() [2/2]

template<class T >
JReader& JIO::JReader::load ( T &  object)
inlineinherited

Read object.

Parameters
objectobject
Returns
this reader

Definition at line 120 of file JSerialisable.hh.

121  {
122  return *this >> object;
123  }

◆ operator bool()

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

Type conversion operator.

Returns
status of this object

Definition at line 33 of file JAbstractObjectStatus.hh.

34  {
35  return this->getStatus();
36  }

◆ operator!() [2/2]

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.

45  {
46  return !(this->getStatus());
47  }

Member Data Documentation

◆ in

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

Definition at line 124 of file JBufferedIO.hh.

◆ buffer

char* JIO::JBufferedReader::buffer
protectedinherited

internal buffer

Definition at line 126 of file JBufferedIO.hh.

◆ size

int JIO::JBufferedReader::size
protectedinherited

size of internal buffer

Definition at line 127 of file JBufferedIO.hh.

◆ pos

int JIO::JBufferedReader::pos
protectedinherited

pointer to begin of available data

Definition at line 128 of file JBufferedIO.hh.

◆ ls

int JIO::JBufferedReader::ls
protectedinherited

pointer to end of available data

Definition at line 129 of file JBufferedIO.hh.

◆ eof

bool JIO::JBufferedReader::eof
protectedinherited

end of file

Definition at line 130 of file JBufferedIO.hh.

The documentation for this class was generated from the following file:
JIO::JBufferedReader::size
int size
size of internal buffer
Definition: JBufferedIO.hh:127
JIO::JBufferedReader::in
JLANG::JSinglePointer< JReader > in
Definition: JBufferedIO.hh:124
JTOOLS::n
const int n
Definition: JPolint.hh:628
JIO::JFileStreamReader::open
void open(const char *file_name)
Open file.
Definition: JFileStreamIO.hh:62
JIO::JBufferedReader::buffer
char * buffer
internal buffer
Definition: JBufferedIO.hh:126
JIO::JBufferedReader::JBufferedReader
JBufferedReader(JReader *__in, const int __size=1048576)
Constructor.
Definition: JBufferedIO.hh:36
JLANG::JBinaryInput::read
virtual int read(char *buffer, const int length)=0
Read byte array.
JIO::JStreamReader
Binary input based on std::istream.
Definition: JStreamIO.hh:24
JIO::JBufferedReader::ls
int ls
pointer to end of available data
Definition: JBufferedIO.hh:129
JIO::JBufferedReader::pos
int pos
pointer to begin of available data
Definition: JBufferedIO.hh:128
JIO::JBufferedReader::getStatus
virtual bool getStatus() const
Status of reader.
Definition: JBufferedIO.hh:62
JIO::JBufferedReader::eof
bool eof
end of file
Definition: JBufferedIO.hh:130
JLANG::JAbstractObjectStatus::getStatus
virtual bool getStatus() const =0
Get status of object.
JIO::JBufferedReader::read
virtual int read(char *zbuf, int n)
Read byte array.
Definition: JBufferedIO.hh:84
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