155 lines
2.4 KiB
Ruby
155 lines
2.4 KiB
Ruby
#
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# shell/builtin-command.rb -
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# $Release Version: 0.6.0 $
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# $Revision$
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# $Date$
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# by Keiju ISHITSUKA(Nihon Rational Software Co.,Ltd)
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#
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# --
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#
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#
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#
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require "shell/filter"
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class Shell
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class BuiltInCommand<Filter
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def wait?
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false
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end
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def active?
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true
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end
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end
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class Echo < BuiltInCommand
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def initialize(sh, *strings)
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super sh
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@strings = strings
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end
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def each(rs = nil)
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rs = @shell.record_separator unless rs
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for str in @strings
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yield str + rs
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end
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end
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end
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class Cat < BuiltInCommand
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def initialize(sh, *filenames)
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super sh
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@cat_files = filenames
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end
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def each(rs = nil)
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if @cat_files.empty?
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super
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else
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for src in @cat_files
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@shell.foreach(src, rs){|l| yield l}
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end
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end
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end
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end
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class Glob < BuiltInCommand
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def initialize(sh, pattern)
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super sh
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@pattern = pattern
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Thread.critical = true
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back = Dir.pwd
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begin
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Dir.chdir @shell.cwd
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@files = Dir[pattern]
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ensure
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Dir.chdir back
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Thread.critical = false
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end
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end
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def each(rs = nil)
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rs = @shell.record_separator unless rs
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for f in @files
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yield f+rs
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end
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end
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end
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# class Sort < Cat
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# def initialize(sh, *filenames)
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# super
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# end
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#
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# def each(rs = nil)
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# ary = []
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# super{|l| ary.push l}
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# for l in ary.sort!
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# yield l
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# end
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# end
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# end
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class AppendIO < BuiltInCommand
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def initialize(sh, io, filter)
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super sh
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@input = filter
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@io = io
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end
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def input=(filter)
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@input.input=filter
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for l in @input
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@io << l
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end
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end
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end
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class AppendFile < AppendIO
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def initialize(sh, to_filename, filter)
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@file_name = to_filename
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io = sh.open(to_filename, "a")
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super(sh, io, filter)
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end
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def input=(filter)
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begin
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super
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ensure
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@io.close
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end
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end
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end
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class Tee < BuiltInCommand
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def initialize(sh, filename)
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super sh
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@to_filename = filename
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end
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def each(rs = nil)
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to = @shell.open(@to_filename, "w")
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begin
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super{|l| to << l; yield l}
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ensure
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to.close
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end
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end
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end
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class Concat < BuiltInCommand
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def initialize(sh, *jobs)
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super(sh)
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@jobs = jobs
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end
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def each(rs = nil)
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while job = @jobs.shift
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job.each{|l| yield l}
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end
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end
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end
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end
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