redi::basic_ipstream - Class template for Input PStreams

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PStreams                                         Sun Dec 13 2020        redi::basic_ipstream<CharT,Traits>(3)

template<typenameCharT,typenameTraits=std::char_traits<CharT>>redi::basic_ipstream<CharT,Traits>::basic_ipstream(conststd::string&cmd,pmodemode=pstdout)[inline],[explicit]
       Constructor that initialises the stream by starting a process. Initialises the stream buffer by calling
       do_open() with the supplied arguments.

       Parameterscmd a string containing a shell command.
           mode the I/O mode to use when opening the pipe.

       Seealsodo_open(conststd::string&,pmode)template<typenameCharT,typenameTraits=std::char_traits<CharT>>redi::basic_ipstream<CharT,Traits>::basic_ipstream(conststd::string&file,constargv_type&argv,pmodemode=pstdout)[inline]
       Constructor that initialises the stream by starting a process. Initialises the stream buffer by calling
       do_open() with the supplied arguments.

       Parametersfile a string containing the pathname of a program to execute.
           argv a vector of argument strings passed to the new program.
           mode the I/O mode to use when opening the pipe.

       Seealsodo_open(conststd::string&,constargv_type&,pmode)template<typenameCharT,typenameTraits=std::char_traits<CharT>>redi::basic_ipstream<CharT,Traits>::basic_ipstream(constargv_type&argv,pmodemode=pstdout)[inline],[explicit]
       Constructor that initialises the stream by starting a process. Initialises the stream buffer by calling
       do_open(argv[0],argv,mode|pstdout)

       Parametersargv a vector of argument strings passed to the new program.
           mode the I/O mode to use when opening the pipe.

       Seealsodo_open(conststd::string&,constargv_type&,pmode)template<typenameCharT,typenameTraits=std::char_traits<CharT>>redi::basic_ipstream<CharT,Traits>::~basic_ipstream()[inline]
       Destructor. Closes the stream and waits for the child to exit.

template<typenameCharT,typenameTraits=std::char_traits<CharT>>
       class redi::basic_ipstream< CharT, Traits >" Class template for Input PStreams.

       Reading from an ipstream reads the command's standard output and/or standard error (depending on how the
       ipstream is opened) and the command's standard input is the same as that of the process that created the
       object, unless altered by the command itself.

intredi::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.

   conststd::string&redi::pstream_common<C,T>::command[inline],[inherited]
       Return the command used to initialise the stream.

       Returns
           a string containing the command used to initialise the stream.

   voidredi::pstream_common<C,T>::do_open(conststd::string&cmd,pmodemode)[inline],[protected],[inherited]
       Start a process. Calls rdbuf()->open( command , mode ) and sets failbit on error.

       Parameterscmd a string containing a shell command.
           mode the I/O mode to use when opening the pipe.

       Seealsobasic_pstreambuf::open(conststd::string&,pmode)voidredi::pstream_common<C,T>::do_open(conststd::string&file,constargv_type&argv,pmodemode)[inline],[protected],[inherited]
       Start a process. Calls rdbuf()->open( file, argv, mode ) and sets failbit on error.

       Parametersfile a string containing the pathname of a program to execute.
           argv a vector of argument strings passed to the new program.
           mode the I/O mode to use when opening the pipe.

       Seealsobasic_pstreambuf::open(conststd::string&,constargv_type&,pmode)template<typenameCharT,typenameTraits=std::char_traits<CharT>>basic_ipstream&redi::basic_ipstream<CharT,Traits>::err()[inline]
       Set streambuf to read from process' stderr.

       Returns
           *this

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

   boolredi::pstream_common<C,T>::is_open[inline],[inherited]
       Report whether the stream's buffer has been initialised.

       Returnsrdbuf()->is_open().

       Seealsobasic_pstreambuf::is_open()template<typenameCharT,typenameTraits=std::char_traits<CharT>>voidredi::basic_ipstream<CharT,Traits>::open(conststd::string&cmd,pmodemode=pstdout)[inline]
       Start a process. Calls do_open( cmd , mode|pstdout ).

       Parameterscmd a string containing a shell command.
           mode the I/O mode to use when opening the pipe.

       Seealsodo_open(conststd::string&,pmode)

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

   template<typenameCharT,typenameTraits=std::char_traits<CharT>>voidredi::basic_ipstream<CharT,Traits>::open(conststd::string&file,constargv_type&argv,pmodemode=pstdout)[inline]
       Start a process. Calls do_open( file , argv , mode|pstdout ).

       Parametersfile a string containing the pathname of a program to execute.
           argv a vector of argument strings passed to the new program.
           mode the I/O mode to use when opening the pipe.

       Seealsodo_open(conststd::string&,constargv_type&,pmode)

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

   template<typenameCharT,typenameTraits=std::char_traits<CharT>>basic_ipstream&redi::basic_ipstream<CharT,Traits>::out()[inline]
       Set streambuf to read from process' stdout.

       Returns
           *this

       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
           a pointer to the private stream buffer member.

       redi::basic_ipstream - Class template for Input PStreams

       #include <pstream.h>

       Inherits basic_istream< CharT, std::char_traits< CharT > >, redi::pstream_common<CharT,std::char_traits<CharT>>, and redi::pstreams.

   PublicTypes
       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.

   PublicMemberFunctionsbasic_ipstream ()
           Default constructor, creates an uninitialised stream.
       basic_ipstream (const std::string &cmd, pmode mode=pstdout)
           Constructor that initialises the stream by starting a process.
       basic_ipstream (const std::string &file, const argv_type &argv, pmode mode=pstdout)
           Constructor that initialises the stream by starting a process.
       basic_ipstream (const argv_type &argv, pmode mode=pstdout)
           Constructor that initialises the stream by starting a process.
       ~basic_ipstream ()
           Destructor.
       void open (const std::string &cmd, pmode mode=pstdout)
           Start a process.
       void open (const std::string &file, const argv_type &argv, pmode mode=pstdout)
           Start a process.
       basic_ipstream & out ()
           Set streambuf to read from process' stdout.
       basic_ipstream & 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.

   StaticPublicAttributes
       static const pmodepstdin = std::ios_base::out
           Write to stdin.
       static const pmodepstdout = std::ios_base::in
           Read from stdout.
       static const pmodepstderr = std::ios_base::app
           Read from stderr.
       static const pmodenewpg = std::ios_base::trunc
           Create a new process group for the child process.
       static const pmodepstdin = std::ios_base::out
           Write to stdin.
       static const pmodepstdout = std::ios_base::in
           Read from stdout.
       static const pmodepstderr = std::ios_base::app
           Read from stderr.
       static const pmodenewpg = std::ios_base::trunc
           Create a new process group for the child process.

   ProtectedTypes
       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 }

   ProtectedMemberFunctions
       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.

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