[ruby-list:20809] Re: rbsh

ごとけんです

In message "[ruby-list:20788] Re: rbsh"
    on 00/02/17, "Hideaki Takata" <[e-mail]> writes:
>bashの標準出力をRubyでどうにかして受け取っておかねえとおかしなことにな
>るよなあ。一つのコマンドにReadableとWritableのふたつのIOを作る時にはど
>うすりゃ良いんだろう。

gpv の付属品として cmdsrv.rb というのを書いたことがあります。
http://www.math.sci.hokudai.ac.jp/ruby/p/gpv/

モノによってはptyを使ってきちんと処理する必要があると思うん
ですけど、モチベーションが足りないのでやってません。

-- gotoken

# ドキュメントだけつけときます↓

COMMANDSERVER           RUBY LIBRARY REFERENCE MANUAL            COMMANDSERVER

 NAME
   CommandServer

 SYNOPSIS
   c = CommandServer.new(cmd)

 DESCRIPTION
   CommandServer is a class to control a child process with standard IOs.
   A CommandServer object behaves as a readable and writable IO. The stderr
   of the child is always bufferd in an Array and can be obtain by err.shift.

   Note that child process maybe have internal buffer to output, so, gets
   might cause block.  A solution to avoid blocking is making stdout of
   CommandServer tty, e.g.,

     child = CommandServer.new(cmd)
     STDOUT.reopen(child.stdout)

   but this maybe mix child's stdout and parent's.

 CLASS METHODS
   CommandServer.new(<command name>)
      create new process.

 METHODS
   alive?
      returns true if process is alive.
   err
      returns stderr buffer as an Array.
   gets
      gets one line from stdout of command.
   kill(signal)
      sends signal to command (child process). See also Process::kill.
   print arg1, arg2, ...
      prints to stdin of command.
   << arg
      puts to stdin of command and returns stdin IO object.
   pid
      returns pid of command.
   stdout
      returns stdout of command.

 AUTHORS
   [e-mail]