Irb: Unterschied zwischen den Versionen

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Zeile 17: Zeile 17:
 
         histfile if $DEBUG || $VERBOSE
 
         histfile if $DEBUG || $VERBOSE
 
     end
 
     end
 
 
     Kernel::at_exit {
 
     Kernel::at_exit {
 
       lines = Readline::HISTORY.to_a.reverse.uniq.reverse
 
       lines = Readline::HISTORY.to_a.reverse.uniq.reverse
 
       lines = lines[ -MAXHISTSIZE, MAXHISTSIZE ] if lines.nitems > MAXHISTSIZE
 
       lines = lines[ -MAXHISTSIZE, MAXHISTSIZE ] if lines.nitems > MAXHISTSIZE
 
       $stderr.puts "Saving %d history lines to %s." %
 
       $stderr.puts "Saving %d history lines to %s." %
 
 
         [ lines.length, histfile ] if $VERBOSE || $DEBUG
 
         [ lines.length, histfile ] if $VERBOSE || $DEBUG
 
       File::open( histfile, File::WRONLY|File::CREAT|File::TRUNC ) {|ofh|
 
       File::open( histfile, File::WRONLY|File::CREAT|File::TRUNC ) {|ofh|
Zeile 31: Zeile 29:
 
end
 
end
 
</pre>
 
</pre>
 
 
=ri in irb=
 
=ri in irb=
 
<pre>
 
<pre>
Zeile 37: Zeile 34:
 
   puts `ri #{arg}`
 
   puts `ri #{arg}`
 
end
 
end
 
 
class Module
 
class Module
 
   def ri(meth=nil)
 
   def ri(meth=nil)
Zeile 52: Zeile 48:
 
end
 
end
 
</pre>
 
</pre>
 
 
=Tab completion=
 
=Tab completion=
 
<pre>
 
<pre>
Zeile 58: Zeile 53:
 
ARGV.concat [ "--readline", "--prompt-mode", "simple" ]
 
ARGV.concat [ "--readline", "--prompt-mode", "simple" ]
 
</pre>
 
</pre>
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{{Rübÿ Spëëd Mëtäl Cödïng}}

Version vom 18. Mai 2006, 21:23 Uhr

History

HISTFILE = "~/.irb.hist"
MAXHISTSIZE = 10000
 
begin
  if defined? Readline::HISTORY
    histfile = File::expand_path( HISTFILE )
    if File::exists?( histfile )
      lines = IO::readlines( histfile ).collect {|line| line.chomp}
      puts "Read %d saved history commands from %s." %
        [ lines.nitems, histfile ] if $DEBUG || $VERBOSE
      Readline::HISTORY.push( *lines )
    else
      puts "History file '%s' was empty or non-existant." %
        histfile if $DEBUG || $VERBOSE
    end
    Kernel::at_exit {
      lines = Readline::HISTORY.to_a.reverse.uniq.reverse
      lines = lines[ -MAXHISTSIZE, MAXHISTSIZE ] if lines.nitems > MAXHISTSIZE
      $stderr.puts "Saving %d history lines to %s." %
        [ lines.length, histfile ] if $VERBOSE || $DEBUG
      File::open( histfile, File::WRONLY|File::CREAT|File::TRUNC ) {|ofh|
        lines.each {|line| ofh.puts line }
      }
    }
  end
end

ri in irb

def ri arg
   puts `ri #{arg}`
end
class Module
   def ri(meth=nil)
     if meth
       if instance_methods(false).include? meth.to_s
         puts `ri #{self}##{meth}`
       else
         super
       end
     else
       puts `ri #{self}`
     end
   end
end

Tab completion

require 'irb/completion'
ARGV.concat [ "--readline", "--prompt-mode", "simple" ]


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