Public Types¶

typedef pbase_type::pmode pmode
Type used to specify how to connect to the process. typedef pbase_type::argv_type argv_type
Type used to hold the arguments for a command. typedef int fd_type
Type used for file descriptors. typedef int fd_type
Type used for file descriptors.

Public Member Functions¶

basic_pstream ()
Default constructor, creates an uninitialised stream. basic_pstream (const std::string &cmd, pmode mode=pstdout|pstdin)
Constructor that initialises the stream by starting a process. basic_pstream (const std::string &file, const argv_type &argv, pmode mode=pstdout|pstdin)
Constructor that initialises the stream by starting a process. basic_pstream (const argv_type &argv, pmode mode=pstdout|pstdin)
Constructor that initialises the stream by starting a process. ~basic_pstream ()
Destructor. void open (const std::string &cmd, pmode mode=pstdout|pstdin)
Start a process. void open (const std::string &file, const argv_type &argv, pmode mode=pstdout|pstdin)
Start a process. basic_pstream & out ()
Set streambuf to read from process' stdout. basic_pstream & err ()
Set streambuf to read from process' stderr. int close ()
bool is_open () const
Report whether the stream's buffer has been initialised. const std::string & command () const
Return the command used to initialise the stream. streambuf_type * rdbuf () const
Return a pointer to the stream buffer.

Static Public Attributes¶

static const pmode pstdin = std::ios_base::out
Write to stdin. static const pmode pstdout = std::ios_base::in
Read from stdout. static const pmode pstderr = std::ios_base::app
Read from stderr. static const pmode newpg = std::ios_base::trunc
Create a new process group for the child process. static const pmode pstdin = std::ios_base::out
Write to stdin. static const pmode pstdout = std::ios_base::in
Read from stdout. static const pmode pstderr = std::ios_base::app
Read from stderr. static const pmode newpg = std::ios_base::trunc
Create a new process group for the child process.

Protected Types¶

typedef basic_pstreambuf< CharT, std::char_traits< CharT > > streambuf_type
typedef std::basic_ios< CharT, std::char_traits< CharT > > ios_type
enum { bufsz = 32 }
enum { pbsz = 2 }
enum { bufsz = 32 }
enum { pbsz = 2 }

Protected Member Functions¶

void do_open (const std::string &cmd, pmode mode)
Start a process. void do_open (const std::string &file, const argv_type &argv, pmode mode)
Start a process.

Protected Attributes¶

std::string command_
The command used to start the process.

template<typename CharT, typename Traits = std::char_traits<CharT>>¶

class redi::basic_pstream< CharT, Traits >" Class template for Bidirectional PStreams.

Writing to a pstream opened with pmode pstdin writes to the standard input of the command. Reading from a pstream opened with pmode pstdout and/or pstderr reads the command's standard output and/or standard error. Any of the process' stdin, stdout or stderr that is not connected to the pstream (as specified by the pmode) will be the same as the process that created the pstream object, unless altered by the command itself.

template<typename CharT , typename Traits = std::char_traits<CharT>> redi::basic_pstream< CharT, Traits >::basic_pstream (const std::string & cmd, pmode mode = pstdout|pstdin) [inline], [explicit]¶

Constructor that initialises the stream by starting a process. Initialises the stream buffer by calling do_open() with the supplied arguments.

Parameters

See also

template<typename CharT , typename Traits = std::char_traits<CharT>> redi::basic_pstream< CharT, Traits >::basic_pstream (const std::string & file, const argv_type & argv, pmode mode = pstdout|pstdin) [inline]¶

Constructor that initialises the stream by starting a process. Initialises the stream buffer by calling do_open() with the supplied arguments.

Parameters

See also

template<typename CharT , typename Traits = std::char_traits<CharT>> redi::basic_pstream< CharT, Traits >::basic_pstream (const argv_type & argv, pmode mode = pstdout|pstdin) [inline], [explicit]¶

Constructor that initialises the stream by starting a process. Initialises the stream buffer by calling do_open(argv[0],argv,mode)

Parameters

See also

template<typename CharT , typename Traits = std::char_traits<CharT>> redi::basic_pstream< CharT, Traits >::~basic_pstream () [inline]¶

Destructor. Closes the stream and waits for the child to exit.

int redi::pstream_common< C, T >::close [inline], [inherited]¶

Close the pipe, returning the program's exit status, as pclose(3) does.

Calls rdbuf->close() and sets failbit on error. Returns process's exit status, as pclose(3) does.

const std::string & redi::pstream_common< C, T >::command [inline], [inherited]¶

Return the command used to initialise the stream.

Returns

void redi::pstream_common< C, T >::do_open (const std::string & cmd, pmode mode) [inline], [protected], [inherited]¶

Start a process. Calls rdbuf()->open( command , mode ) and sets failbit on error.

Parameters

See also

void redi::pstream_common< C, T >::do_open (const std::string & file, const argv_type & argv, pmode mode) [inline], [protected], [inherited]¶

Start a process. Calls rdbuf()->open( file, argv, mode ) and sets failbit on error.

Parameters

See also

template<typename CharT , typename Traits = std::char_traits<CharT>> basic_pstream& redi::basic_pstream< CharT, Traits >::err () [inline]¶

Set streambuf to read from process' stderr.

Returns

References redi::basic_pstreambuf< CharT, Traits >::read_err().

bool redi::pstream_common< C, T >::is_open [inline], [inherited]¶

Report whether the stream's buffer has been initialised.

Returns

See also

template<typename CharT , typename Traits = std::char_traits<CharT>> void redi::basic_pstream< CharT, Traits >::open (const std::string & cmd, pmode mode = pstdout|pstdin) [inline]¶

Start a process. Calls do_open( cnd , mode ).

Parameters

See also

References redi::pstream_common< CharT, std::char_traits< CharT > >::do_open().

template<typename CharT , typename Traits = std::char_traits<CharT>> void redi::basic_pstream< CharT, Traits >::open (const std::string & file, const argv_type & argv, pmode mode = pstdout|pstdin) [inline]¶

Start a process. Calls do_open( file , argv , mode ).

Parameters

See also

References redi::pstream_common< CharT, std::char_traits< CharT > >::do_open().

template<typename CharT , typename Traits = std::char_traits<CharT>> basic_pstream& redi::basic_pstream< CharT, Traits >::out () [inline]¶

Set streambuf to read from process' stdout.

Returns

References redi::basic_pstreambuf< CharT, Traits >::read_err().

pstream_common< C, T >::streambuf_type * redi::pstream_common< C, T >::rdbuf [inline], [inherited]¶

Return a pointer to the stream buffer.

Returns