* ext/pty: moved documents and samples to the appropriate places.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28400 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

sample/pty/expect_sample.rb

@@ -0,0 +1,48 @@
+#
+# sample program of expect.rb
+#
+#  by A. Ito
+#
+#  This program reports the latest version of ruby interpreter
+#  by connecting to ftp server at ruby-lang.org.
+#
+require 'pty'
+require 'expect'
+
+fnames = []
+PTY.spawn("ftp ftp.ruby-lang.org") do |r_f,w_f,pid|
+  w_f.sync = true
+
+  $expect_verbose = false
+
+  if !ENV['USER'].nil?
+    username = ENV['USER']
+  elsif !ENV['LOGNAME'].nil?
+    username = ENV['LOGNAME']
+  else
+    username = 'guest'
+  end
+
+  r_f.expect(/^(Name).*: |(word):|> /) do
+    w_f.puts($1 ? "ftp" : $2 ? "#{username}@" : "cd pub/ruby")
+  end
+  r_f.expect("> ") do
+    w_f.print "dir\n"
+  end
+
+  r_f.expect(/[^\-]> /) do |output|
+    for x in output[0].split("\n")
+      if x =~ /(ruby.*?\.tar\.gz)/ then
+         fnames.push $1
+      end
+    end
+  end
+  begin
+    w_f.print "quit\n"
+  rescue
+  end
+end
+
+print "The latest ruby interpreter is "
+print fnames.sort.pop
+print "\n"

sample/pty/script.rb

@@ -0,0 +1,37 @@
+require 'pty'
+
+if ARGV.size == 0 then
+  ofile = "typescript"
+else
+  ofile = ARGV[0]
+end
+
+logfile = File.open(ofile,"a")
+
+system "stty -echo raw lnext ^_"
+
+PTY.spawn("/bin/csh") do |r_pty,w_pty,pid|
+
+  Thread.new do
+    while true
+      w_pty.print STDIN.getc.chr
+      w_pty.flush
+    end
+  end
+
+  begin
+    while true
+      c = r_pty.sysread(512)
+      break if c.nil?
+      print c
+      STDOUT.flush
+      logfile.print c
+    end
+  rescue
+  #  print $@,':',$!,"\n"
+    logfile.close
+  end
+end
+
+system "stty echo -raw lnext ^v"
+

sample/pty/shl.rb

@@ -0,0 +1,92 @@
+#
+#  old-fashioned 'shl' like program
+#  by A. Ito
+#
+#  commands:
+#     c        creates new shell
+#     C-z      suspends shell
+#     p        lists all shell
+#     0,1,...  choose shell
+#     q        quit
+
+require 'pty'
+
+$shells = []
+$n_shells = 0
+
+$r_pty = nil
+$w_pty = nil
+
+def writer
+  system "stty -echo raw"
+  begin
+    while true
+      c = STDIN.getc
+      if c == 26 then # C-z
+        $reader.raise(nil)
+        return 'Suspend'
+      end
+      $w_pty.print c.chr
+      $w_pty.flush
+    end
+  rescue
+    $reader.raise(nil)
+    return 'Exit'
+  ensure
+    system "stty echo -raw"
+  end
+end
+
+$reader = Thread.new {
+  while true
+    begin
+      next if $r_pty.nil?
+      c = $r_pty.getc
+      if c.nil? then
+        Thread.stop
+      end
+      print c.chr
+      STDOUT.flush
+    rescue
+      Thread.stop
+    end
+  end
+}
+
+# $reader.raise(nil)
+
+
+while true
+  print ">> "
+  STDOUT.flush
+  case gets
+  when /^c/i
+    $shells[$n_shells] = PTY.spawn("/bin/csh")
+    $r_pty,$w_pty = $shells[$n_shells]
+    $n_shells += 1
+    $reader.run
+    if writer == 'Exit'
+      $n_shells -= 1
+      $shells[$n_shells] = nil
+    end
+  when /^p/i
+    for i in 0..$n_shells
+      unless $shells[i].nil?
+        print i,"\n"
+      end
+    end
+  when /^([0-9]+)/
+    n = $1.to_i
+    if $shells[n].nil?
+      print "\##{i} doesn't exist\n"
+    else
+      $r_pty,$w_pty = $shells[n]
+      $reader.run
+      if writer == 'Exit' then
+        $shells[n] = nil
+      end
+    end
+  when /^q/i
+    exit
+  end
+end