TwiceAsNice  2019-02-18
Public Types | Public Member Functions | Private Types | Private Attributes | Related Functions | List of all members
Nice::basic_opstream< CharT, Traits > Class Template Reference

Class template for Output PStreams. More...

#include <PStream.h>

Inheritance diagram for Nice::basic_opstream< CharT, Traits >:
Inheritance graph
Collaboration diagram for Nice::basic_opstream< CharT, Traits >:
Collaboration graph

Public Types

typedef pbase_type::pmode pmode
 Type used to specify how to connect to the process. More...
 
typedef pbase_type::argv_type argv_type
 Type used to hold the arguments for a command. More...
 
typedef pbase_type::pmode pmode
 Type used to specify how to connect to the process. More...
 
typedef pbase_type::argv_type argv_type
 Type used to hold the arguments for a command. More...
 
- Public Types inherited from Nice::pstreams
typedef std::ios_base::openmode pmode
 Type used to specify how to connect to the process. More...
 
typedef std::vector< std::string > argv_type
 Type used to hold the arguments for a command. More...
 
typedef int fd_type
 Type used for file descriptors. More...
 
typedef std::ios_base::openmode pmode
 Type used to specify how to connect to the process. More...
 
typedef std::vector< std::string > argv_type
 Type used to hold the arguments for a command. More...
 
typedef int fd_type
 Type used for file descriptors. More...
 

Public Member Functions

 basic_opstream ()
 Default constructor, creates an uninitialised stream. More...
 
 basic_opstream (const std::string &command, pmode mode=pstdin)
 Constructor that initialises the stream by starting a process. More...
 
 basic_opstream (const std::string &file, const argv_type &argv, pmode mode=pstdin)
 Constructor that initialises the stream by starting a process. More...
 
 ~basic_opstream ()
 Destructor. More...
 
void open (const std::string &command, pmode mode=pstdin)
 Start a process. More...
 
void open (const std::string &file, const argv_type &argv, pmode mode=pstdin)
 Start a process. More...
 
 basic_opstream ()
 Default constructor, creates an uninitialised stream. More...
 
 basic_opstream (const std::string &command, pmode mode=pstdin)
 Constructor that initialises the stream by starting a process. More...
 
 basic_opstream (const std::string &file, const argv_type &argv, pmode mode=pstdin)
 Constructor that initialises the stream by starting a process. More...
 
 ~basic_opstream ()
 Destructor. More...
 
void open (const std::string &command, pmode mode=pstdin)
 Start a process. More...
 
void open (const std::string &file, const argv_type &argv, pmode mode=pstdin)
 Start a process. More...
 
- Public Member Functions inherited from Nice::pstream_common< CharT, Traits >
void close ()
 Close the pipe. More...
 
bool is_open () const
 Report whether the stream's buffer has been initialised. More...
 
const std::string & command () const
 Return the command used to initialise the stream. More...
 
streambuf_typerdbuf () const
 Return a pointer to the stream buffer. More...
 
void close ()
 Close the pipe. More...
 
bool is_open () const
 Report whether the stream's buffer has been initialised. More...
 
const std::string & command () const
 Return the command used to initialise the stream. More...
 
streambuf_typerdbuf () const
 Return a pointer to the stream buffer. More...
 

Private Types

typedef std::basic_ostream< CharT, Traits > ostream_type
 
typedef pstream_common< CharT, Traits > pbase_type
 
typedef std::basic_ostream< CharT, Traits > ostream_type
 
typedef pstream_common< CharT, Traits > pbase_type
 

Private Attributes

streambuf_type buf_
 The stream buffer. More...
 
streambuf_type buf_
 The stream buffer. More...
 

Related Functions

(Note that these are not member functions.)

template<typename C , typename T >
std::basic_ostream< C, T > & peof (std::basic_ostream< C, T > &s)
 When inserted into an output pstream the manipulator calls basic_pstreambuf<C,T>::peof() to close the output pipe, causing the child process to receive the end-of-file indicator on subsequent reads from its stdin stream. More...
 
template<typename C , typename T >
std::basic_ostream< C, T > & peof (std::basic_ostream< C, T > &s)
 When inserted into an output pstream the manipulator calls basic_pstreambuf<C,T>::peof() to close the output pipe, causing the child process to receive the end-of-file indicator on subsequent reads from its stdin stream. More...
 

Additional Inherited Members

- Static Public Attributes inherited from Nice::pstreams
static const pmode pstdin = std::ios_base::out
 Write to stdin. More...
 
static const pmode pstdout = std::ios_base::in
 Read from stdout. More...
 
static const pmode pstderr = std::ios_base::app
 Read from stderr. More...
 
- Protected Types inherited from Nice::pstream_common< CharT, Traits >
typedef basic_pstreambuf< CharT, Traits > streambuf_type
 
typedef basic_pstreambuf< CharT, Traits > streambuf_type
 
- Protected Types inherited from Nice::pstreams
enum  { bufsz = 32 }
 
enum  { pbsz = 2 }
 
enum  { bufsz = 32 }
 
enum  { pbsz = 2 }
 
- Protected Member Functions inherited from Nice::pstream_common< CharT, Traits >
 pstream_common ()
 Default constructor. More...
 
 pstream_common (const std::string &command, pmode mode)
 Constructor that initialises the stream by starting a process. More...
 
 pstream_common (const std::string &file, const argv_type &argv, pmode mode)
 Constructor that initialises the stream by starting a process. More...
 
virtual ~pstream_common ()=0
 Pure virtual destructor. More...
 
void do_open (const std::string &command, pmode mode)
 Start a process. More...
 
void do_open (const std::string &file, const argv_type &argv, pmode mode)
 Start a process. More...
 
 pstream_common ()
 Default constructor. More...
 
 pstream_common (const std::string &command, pmode mode)
 Constructor that initialises the stream by starting a process. More...
 
 pstream_common (const std::string &file, const argv_type &argv, pmode mode)
 Constructor that initialises the stream by starting a process. More...
 
virtual ~pstream_common ()=0
 Pure virtual destructor. More...
 
void do_open (const std::string &command, pmode mode)
 Start a process. More...
 
void do_open (const std::string &file, const argv_type &argv, pmode mode)
 Start a process. More...
 
- Protected Attributes inherited from Nice::pstream_common< CharT, Traits >
std::string command_
 The command used to start the process. More...
 
streambuf_type buf_
 The stream buffer. More...
 

Detailed Description

template<typename CharT, typename Traits = std::char_traits<CharT>>
class Nice::basic_opstream< CharT, Traits >

Class template for Output PStreams.

Writing to an open opstream writes to the standard input of the command; the command's standard output is the same as that of the process that created the pstream object, unless altered by the command itself.

Member Typedef Documentation

◆ argv_type [1/2]

template<typename CharT , typename Traits = std::char_traits<CharT>>
typedef pbase_type::argv_type Nice::basic_opstream< CharT, Traits >::argv_type

Type used to hold the arguments for a command.

◆ argv_type [2/2]

template<typename CharT , typename Traits = std::char_traits<CharT>>
typedef pbase_type::argv_type Nice::basic_opstream< CharT, Traits >::argv_type

Type used to hold the arguments for a command.

◆ ostream_type [1/2]

template<typename CharT , typename Traits = std::char_traits<CharT>>
typedef std::basic_ostream<CharT, Traits> Nice::basic_opstream< CharT, Traits >::ostream_type
private

◆ ostream_type [2/2]

template<typename CharT , typename Traits = std::char_traits<CharT>>
typedef std::basic_ostream<CharT, Traits> Nice::basic_opstream< CharT, Traits >::ostream_type
private

◆ pbase_type [1/2]

template<typename CharT , typename Traits = std::char_traits<CharT>>
typedef pstream_common<CharT, Traits> Nice::basic_opstream< CharT, Traits >::pbase_type
private

◆ pbase_type [2/2]

template<typename CharT , typename Traits = std::char_traits<CharT>>
typedef pstream_common<CharT, Traits> Nice::basic_opstream< CharT, Traits >::pbase_type
private

◆ pmode [1/2]

template<typename CharT , typename Traits = std::char_traits<CharT>>
typedef pbase_type::pmode Nice::basic_opstream< CharT, Traits >::pmode

Type used to specify how to connect to the process.

◆ pmode [2/2]

template<typename CharT , typename Traits = std::char_traits<CharT>>
typedef pbase_type::pmode Nice::basic_opstream< CharT, Traits >::pmode

Type used to specify how to connect to the process.

Constructor & Destructor Documentation

◆ basic_opstream() [1/6]

template<typename CharT , typename Traits = std::char_traits<CharT>>
Nice::basic_opstream< CharT, Traits >::basic_opstream ( )
inline

Default constructor, creates an uninitialised stream.

◆ basic_opstream() [2/6]

template<typename CharT , typename Traits = std::char_traits<CharT>>
Nice::basic_opstream< CharT, Traits >::basic_opstream ( const std::string &  command,
pmode  mode = pstdin 
)
inline

Constructor that initialises the stream by starting a process.

Initialises the stream buffer by calling do_open() with the supplied arguments.

Parameters
commanda string containing a shell command.
modethe I/O mode to use when opening the pipe.
See also
do_open(const std::string&, pmode)

◆ basic_opstream() [3/6]

template<typename CharT , typename Traits = std::char_traits<CharT>>
Nice::basic_opstream< CharT, Traits >::basic_opstream ( const std::string &  file,
const argv_type argv,
pmode  mode = pstdin 
)
inline

Constructor that initialises the stream by starting a process.

Initialises the stream buffer by calling do_open() with the supplied arguments.

Parameters
filea string containing the pathname of a program to execute.
argva vector of argument strings passed to the new program.
modethe I/O mode to use when opening the pipe.
See also
do_open(const std::string&, const argv_type&, pmode)

◆ ~basic_opstream() [1/2]

template<typename CharT , typename Traits = std::char_traits<CharT>>
Nice::basic_opstream< CharT, Traits >::~basic_opstream ( )
inline

Destructor.

Closes the stream and waits for the child to exit.

◆ basic_opstream() [4/6]

template<typename CharT , typename Traits = std::char_traits<CharT>>
Nice::basic_opstream< CharT, Traits >::basic_opstream ( )
inline

Default constructor, creates an uninitialised stream.

◆ basic_opstream() [5/6]

template<typename CharT , typename Traits = std::char_traits<CharT>>
Nice::basic_opstream< CharT, Traits >::basic_opstream ( const std::string &  command,
pmode  mode = pstdin 
)
inline

Constructor that initialises the stream by starting a process.

Initialises the stream buffer by calling do_open() with the supplied arguments.

Parameters
commanda string containing a shell command.
modethe I/O mode to use when opening the pipe.
See also
do_open(const std::string&, pmode)

◆ basic_opstream() [6/6]

template<typename CharT , typename Traits = std::char_traits<CharT>>
Nice::basic_opstream< CharT, Traits >::basic_opstream ( const std::string &  file,
const argv_type argv,
pmode  mode = pstdin 
)
inline

Constructor that initialises the stream by starting a process.

Initialises the stream buffer by calling do_open() with the supplied arguments.

Parameters
filea string containing the pathname of a program to execute.
argva vector of argument strings passed to the new program.
modethe I/O mode to use when opening the pipe.
See also
do_open(const std::string&, const argv_type&, pmode)

◆ ~basic_opstream() [2/2]

template<typename CharT , typename Traits = std::char_traits<CharT>>
Nice::basic_opstream< CharT, Traits >::~basic_opstream ( )
inline

Destructor.

Closes the stream and waits for the child to exit.

Member Function Documentation

◆ open() [1/4]

template<typename CharT , typename Traits = std::char_traits<CharT>>
void Nice::basic_opstream< CharT, Traits >::open ( const std::string &  command,
pmode  mode = pstdin 
)
inline

Start a process.

Calls do_open( command , mode|pstdin ).

Parameters
commanda string containing a shell command.
modethe I/O mode to use when opening the pipe.
See also
do_open(const std::string&, pmode)

◆ open() [2/4]

template<typename CharT , typename Traits = std::char_traits<CharT>>
void Nice::basic_opstream< CharT, Traits >::open ( const std::string &  command,
pmode  mode = pstdin 
)
inline

Start a process.

Calls do_open( command , mode|pstdin ).

Parameters
commanda string containing a shell command.
modethe I/O mode to use when opening the pipe.
See also
do_open(const std::string&, pmode)

◆ open() [3/4]

template<typename CharT , typename Traits = std::char_traits<CharT>>
void Nice::basic_opstream< CharT, Traits >::open ( const std::string &  file,
const argv_type argv,
pmode  mode = pstdin 
)
inline

Start a process.

Calls do_open( file , argv , mode|pstdin ).

Parameters
filea string containing the pathname of a program to execute.
argva vector of argument strings passed to the new program.
modethe I/O mode to use when opening the pipe.
See also
do_open(const std::string&, const argv_type&, pmode)

◆ open() [4/4]

template<typename CharT , typename Traits = std::char_traits<CharT>>
void Nice::basic_opstream< CharT, Traits >::open ( const std::string &  file,
const argv_type argv,
pmode  mode = pstdin 
)
inline

Start a process.

Calls do_open( file , argv , mode|pstdin ).

Parameters
filea string containing the pathname of a program to execute.
argva vector of argument strings passed to the new program.
modethe I/O mode to use when opening the pipe.
See also
do_open(const std::string&, const argv_type&, pmode)

Friends And Related Function Documentation

◆ peof() [1/2]

template<typename C , typename T >
std::basic_ostream< C, T > & peof ( std::basic_ostream< C, T > &  s)
related

When inserted into an output pstream the manipulator calls basic_pstreambuf<C,T>::peof() to close the output pipe, causing the child process to receive the end-of-file indicator on subsequent reads from its stdin stream.

Manipulator to close the pipe connected to the process' stdin.

Parameters
sAn output PStream class.
Returns
The stream object the manipulator was invoked on.
See also
basic_pstreambuf<C,T>::peof() basic_pstream basic_rpstream

◆ peof() [2/2]

template<typename C , typename T >
std::basic_ostream< C, T > & peof ( std::basic_ostream< C, T > &  s)
related

When inserted into an output pstream the manipulator calls basic_pstreambuf<C,T>::peof() to close the output pipe, causing the child process to receive the end-of-file indicator on subsequent reads from its stdin stream.

Manipulator to close the pipe connected to the process' stdin.

Parameters
sAn output PStream class.
Returns
The stream object the manipulator was invoked on.
See also
basic_pstreambuf<C,T>::peof() basic_pstream basic_rpstream

Member Data Documentation

◆ buf_ [1/2]

template<typename CharT , typename Traits = std::char_traits<CharT>>
streambuf_type Nice::pstream_common< CharT, Traits >::buf_
private

The stream buffer.

◆ buf_ [2/2]

template<typename CharT , typename Traits = std::char_traits<CharT>>
streambuf_type Nice::pstream_common< CharT, Traits >::buf_
private

The stream buffer.


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