meta::io Namespace Reference

Compressed file readers and writers, configuration file readers, a simple parser, and memory-mapped file support. More...

Namespaces
	libsvm_parser
	Parser specifically for libsvm-formatted files.

Classes
class	compressed_file_reader
	Represents a file of unsigned integers compressed using gamma compression. More...
class	compressed_file_writer
	Writes to a file of unsigned integers using gamma compression. More...
class	gzifstream
class	gzofstream
class	gzstreambuf
class	mmap_file
	Memory maps a text file readonly. More...
class	parser
	Parses a text file by reading it completely into memory, delimiting tokens by user request. More...

Enumerations
enum	ReaderStatus { notDone, readerDone, userDone }
	Simply saves the current state of the reader.

Functions
template<class T >
void	write_binary (std::ostream &out, const T &elem)
	Writes an object in binary format to a stream. More...
void	write_binary (std::ostream &out, const std::string &str)
	Writes a std::string object in binary format to a stream. More...
template<class T >
void	read_binary (std::istream &in, T &elem)
	Reads an object in binary from a stream. More...
void	read_binary (std::istream &in, std::string &str)
	Reads a string in binary from a stream. More...
uint64_t	default_compression_reader_func (uint64_t value)
	Function that converts a compressed number back into its normal representation. More...
uint64_t	default_compression_writer_func (uint64_t key)
	Shows how to convert a number into its compressed form. More...

Detailed Description

Compressed file readers and writers, configuration file readers, a simple parser, and memory-mapped file support.

Function Documentation

template<class T >

void meta::io::write_binary	(	std::ostream &	out,
		const T &	elem
	)

Writes an object in binary format to a stream.

Parameters

out	The stream to write to
elem	The element to write

void meta::io::write_binary ( std::ostream &  out, const std::string &  str  )

inline

Writes a std::string object in binary format to a stream.

Parameters

out	The stream to write to
str	the string to write

template<class T >

void meta::io::read_binary	(	std::istream &	in,
		T &	elem
	)

Reads an object in binary from a stream.

Parameters

in	The stream to read from
elem	The element to read

void meta::io::read_binary ( std::istream &  in, std::string &  str  )

inline

Reads a string in binary from a stream.

Parameters

in	The stream to read from
str	The string to read

uint64_t meta::io::default_compression_reader_func

(

uint64_t

value

)

Function that converts a compressed number back into its normal representation.

Parameters

value

The value to transform

Returns

the original form

uint64_t meta::io::default_compression_writer_func

(

uint64_t

key

)

Shows how to convert a number into its compressed form.

Parameters

key	The value to transform

Returns

the compressed form