Helper to create and pass std::istream. More...

#include <InputStream.h>

Public Member Functions
	InputStream ()
	Default ctor providing `std::cin`.
	InputStream (std::istream &stream_r, const std::string &name_r=std::string())
	Ctor providing an aleady existig `std::istream`.
	InputStream (const Pathname &file_r)
	Ctor for reading a (gziped) file.
	InputStream (const Pathname &file_r, const std::string &name_r)
	Ctor for reading a (gziped) file.
	InputStream (const std::string &file_r)
	Ctor for reading a (gziped) file.
	InputStream (const std::string &file_r, const std::string &name_r)
	Ctor for reading a (gziped) file.
	InputStream (const char *file_r)
	Ctor for reading a (gziped) file.
	InputStream (const char *file_r, const std::string &name_r)
	Ctor for reading a (gziped) file.
	~InputStream ()
	Dtor.
std::istream &	stream () const
	The std::istream.
	operator std::istream & () const
	Allow implicit conversion to std::istream.
const std::string &	name () const
	Name of the std::istream.
const Pathname &	path () const
	Path to the input file or empty if no file.
std::streamoff	size () const
	Size of the input stream (informal).
void	setSize (std::streamoff val_r)
	Set the size of the input stream.

Private Attributes
Pathname	_path
shared_ptr< std::istream >	_stream
std::string	_name
DefaultIntegral < std::streamoff,-1 >	_size

Related Functions
(Note that these are not member functions.)
std::ostream &	operator<< (std::ostream &str, const InputStream &obj)

Detailed Description

Helper to create and pass std::istream.

The provided std::istream may either be std::cin, sone (gziped) file or an aleady existig std::istream.

An optional name arument may be passed to the ctor, to identify the stream in log messages, even if it is not a file.

Per default the name is "STDIN", the path to an input file or empty.

 void parse( const InputStream & input = InputStream() )
 {
   // process input.stream() and refer to input.name()
   // in log messages.
 }
 parse();                  // std::cin
 parse( "/some/file" );    // file
 parse( "/some/file.gz" ); // gziped file
 std::istream & mystream;
 parse( mystream );        // some existing stream
 parse( InputStream( mystream,
                     "my stream's name" ) );

Definition at line 56 of file InputStream.h.

Constructor & Destructor Documentation

zypp::InputStream::InputStream ( )

Default ctor providing std::cin.

Definition at line 47 of file InputStream.cc.

zypp::InputStream::InputStream	(	std::istream &	stream_r,
		const std::string &	name_r = `std::string()`
	)

Ctor providing an aleady existig std::istream.

Definition at line 57 of file InputStream.cc.

zypp::InputStream::InputStream ( const Pathname & file_r )