зеркало из https://github.com/github/ruby.git
585 строки
14 KiB
Ruby
585 строки
14 KiB
Ruby
#
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# shell/command-controller.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(Nippon Rational Inc.)
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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 "e2mmap"
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require "ftools"
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require "thread"
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require "shell/error"
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require "shell/filter"
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require "shell/system-command"
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require "shell/builtin-command"
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class Shell
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class CommandProcessor
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#
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# initialize of Shell and related classes.
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#
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NoDelegateMethods = ["initialize", "expand_path"]
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def self.initialize
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install_builtin_commands
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# define CommandProccessor#methods to Shell#methods and Filter#methods
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for m in CommandProcessor.instance_methods - NoDelegateMethods
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add_delegate_command_to_shell(m)
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end
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def self.method_added(id)
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add_delegate_command_to_shell(id)
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end
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end
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#
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# include run file.
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#
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def self.run_config
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begin
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load File.expand_path("~/.rb_shell") if ENV.key?("HOME")
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rescue LoadError, Errno::ENOENT
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rescue
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print "load error: #{rc}\n"
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print $!.class, ": ", $!, "\n"
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for err in $@[0, $@.size - 2]
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print "\t", err, "\n"
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end
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end
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end
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def initialize(shell)
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@shell = shell
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@system_commands = {}
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end
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#
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# CommandProcessor#expand_path(path)
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# path: String
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# return: String
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# returns the absolute path for <path>
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#
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def expand_path(path)
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@shell.expand_path(path)
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end
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#
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# File related commands
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# Shell#foreach
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# Shell#open
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# Shell#unlink
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# Shell#test
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#
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# -
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#
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# CommandProcessor#foreach(path, rs)
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# path: String
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# rs: String - record separator
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# iterator
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# Same as:
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# File#foreach (when path is file)
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# Dir#foreach (when path is directory)
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# path is relative to pwd
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#
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def foreach(path = nil, *rs)
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path = "." unless path
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path = expand_path(path)
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if File.directory?(path)
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Dir.foreach(path){|fn| yield fn}
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else
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IO.foreach(path, *rs){|l| yield l}
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end
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end
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#
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# CommandProcessor#open(path, mode)
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# path: String
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# mode: String
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# return: File or Dir
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# Same as:
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# File#open (when path is file)
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# Dir#open (when path is directory)
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# mode has an effect only when path is a file
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#
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def open(path, mode)
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path = expand_path(path)
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if File.directory?(path)
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Dir.open(path)
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else
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effect_umask do
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File.open(path, mode)
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end
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end
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end
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# public :open
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#
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# CommandProcessor#unlink(path)
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# same as:
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# Dir#unlink (when path is directory)
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# File#unlink (when path is file)
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#
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def unlink(path)
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path = expand_path(path)
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if File.directory?(path)
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Dir.unlink(path)
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else
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IO.unlink(path)
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end
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end
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#
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# CommandProcessor#test(command, file1, file2)
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# CommandProcessor#[command, file1, file2]
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# command: char or String or Symbol
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# file1: String
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# file2: String(optional)
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# return: Boolean
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# same as:
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# test() (when command is char or length 1 string or sumbol)
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# FileTest.command (others)
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# example:
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# sh[?e, "foo"]
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# sh[:e, "foo"]
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# sh["e", "foo"]
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# sh[:exists?, "foo"]
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# sh["exists?", "foo"]
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#
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def test(command, file1, file2=nil)
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file1 = expand_path(file1)
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file2 = expand_path(file2) if file2
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command = command.id2name if command.kind_of?(Symbol)
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case command
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when Integer
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top_level_test(command, file1, file2)
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when String
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if command.size == 1
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if file2
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top_level_test(command, file1, file2)
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else
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top_level_test(command, file1)
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end
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else
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if file2
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FileTest.send(command, file1, file2)
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else
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FileTest.send(command, file1)
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end
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end
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end
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end
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alias [] test
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#
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# Dir related methods
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#
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# Shell#mkdir
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# Shell#rmdir
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#
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#--
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#
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# CommandProcessor#mkdir(*path)
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# path: String
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# same as Dir.mkdir()
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#
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def mkdir(*path)
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for dir in path
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Dir.mkdir(expand_path(dir))
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end
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end
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#
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# CommandProcessor#rmdir(*path)
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# path: String
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# same as Dir.rmdir()
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#
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def rmdir(*path)
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for dir in path
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Dir.rmdir(expand_path(path))
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end
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end
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#
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# CommandProcessor#system(command, *opts)
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# command: String
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# opts: String
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# retuen: SystemCommand
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# Same as system() function
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# example:
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# print sh.system("ls", "-l")
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# sh.system("ls", "-l") | sh.head > STDOUT
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#
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def system(command, *opts)
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SystemCommand.new(@shell, find_system_command(command), *opts)
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end
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#
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# ProcessCommand#rehash
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# clear command hash table.
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#
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def rehash
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@system_commands = {}
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end
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#
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# ProcessCommand#transact
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#
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def check_point
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@shell.process_controller.wait_all_jobs_execution
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end
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alias finish_all_jobs check_point
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def transact(&block)
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begin
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@shell.instance_eval(&block)
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ensure
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check_point
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end
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end
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#
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# internal commands
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#
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def out(dev = STDOUT, &block)
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dev.print transact(&block)
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end
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def echo(*strings)
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Echo.new(@shell, *strings)
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end
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def cat(*filenames)
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Cat.new(@shell, *filenames)
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end
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# def sort(*filenames)
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# Sort.new(self, *filenames)
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# end
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def glob(pattern)
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Glob.new(@shell, pattern)
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end
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def append(to, filter)
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case to
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when String
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AppendFile.new(@shell, to, filter)
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when IO
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AppendIO.new(@shell, to, filter)
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else
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Shell.Fail CantApplyMethod, "append", to.class
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end
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end
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def tee(file)
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Tee.new(@shell, file)
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end
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def concat(*jobs)
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Concat.new(@shell, *jobs)
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end
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# %pwd, %cwd -> @pwd
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def notify(*opts, &block)
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Thread.exclusive do
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Shell.notify(*opts) {|mes|
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yield mes if iterator?
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mes.gsub!("%pwd", "#{@cwd}")
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mes.gsub!("%cwd", "#{@cwd}")
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}
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end
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end
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#
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# private functions
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#
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def effect_umask
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if @shell.umask
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Thread.critical = true
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save = File.umask
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begin
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yield
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ensure
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File.umask save
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Thread.critical = false
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end
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else
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yield
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end
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end
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private :effect_umask
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def find_system_command(command)
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return command if /^\// =~ command
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case path = @system_commands[command]
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when String
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if exists?(path)
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return path
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else
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Shell.Fail CommandNotFound, command
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end
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when false
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Shell.Fail CommandNotFound, command
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end
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for p in @shell.system_path
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path = join(p, command)
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if FileTest.exists?(path)
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@system_commands[command] = path
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return path
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end
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end
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@system_commands[command] = false
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Shell.Fail CommandNotFound, command
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end
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#
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# CommandProcessor.def_system_command(command, path)
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# command: String
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# path: String
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# define 'command()' method as method.
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#
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def self.def_system_command(command, path = command)
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begin
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eval((d = %Q[def #{command}(*opts)
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SystemCommand.new(@shell, '#{path}', *opts)
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end]), nil, __FILE__, __LINE__ - 1)
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rescue SyntaxError
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Shell.notify "warn: Can't define #{command} path: #{path}."
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end
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Shell.notify "Define #{command} path: #{path}.", Shell.debug?
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Shell.notify("Definition of #{command}: ", d,
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Shell.debug.kind_of?(Integer) && Shell.debug > 1)
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end
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def self.undef_system_command(command)
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command = command.id2name if command.kind_of?(Symbol)
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remove_method(command)
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Shell.module_eval{remove_method(command)}
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Filter.module_eval{remove_method(command)}
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self
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end
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# define command alias
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# ex)
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# def_alias_command("ls_c", "ls", "-C", "-F")
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# def_alias_command("ls_c", "ls"){|*opts| ["-C", "-F", *opts]}
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#
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@alias_map = {}
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def self.alias_map
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@alias_map
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end
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def self.alias_command(ali, command, *opts, &block)
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ali = ali.id2name if ali.kind_of?(Symbol)
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command = command.id2name if command.kind_of?(Symbol)
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begin
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if iterator?
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@alias_map[ali.intern] = proc
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eval((d = %Q[def #{ali}(*opts)
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@shell.__send__(:#{command},
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*(CommandProcessor.alias_map[:#{ali}].call *opts))
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end]), nil, __FILE__, __LINE__ - 1)
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else
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args = opts.collect{|opt| '"' + opt + '"'}.join ","
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eval((d = %Q[def #{ali}(*opts)
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@shell.__send__(:#{command}, #{args}, *opts)
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end]), nil, __FILE__, __LINE__ - 1)
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end
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rescue SyntaxError
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Shell.notify "warn: Can't alias #{ali} command: #{command}."
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Shell.notify("Definition of #{ali}: ", d)
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raise
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end
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Shell.notify "Define #{ali} command: #{command}.", Shell.debug?
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Shell.notify("Definition of #{ali}: ", d,
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Shell.debug.kind_of?(Integer) && Shell.debug > 1)
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self
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end
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def self.unalias_command(ali)
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ali = ali.id2name if ali.kind_of?(Symbol)
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@alias_map.delete ali.intern
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undef_system_command(ali)
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end
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#
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# CommandProcessor.def_builtin_commands(delegation_class, command_specs)
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# delegation_class: Class or Module
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# command_specs: [[command_name, [argument,...]],...]
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# command_name: String
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# arguments: String
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# FILENAME?? -> expand_path(filename??)
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# *FILENAME?? -> filename??.collect{|f|expand_path(f)}.join(", ")
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# define command_name(argument,...) as
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# delegation_class.command_name(argument,...)
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#
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def self.def_builtin_commands(delegation_class, command_specs)
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for meth, args in command_specs
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arg_str = args.collect{|arg| arg.downcase}.join(", ")
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call_arg_str = args.collect{
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|arg|
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case arg
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when /^(FILENAME.*)$/
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format("expand_path(%s)", $1.downcase)
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when /^(\*FILENAME.*)$/
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# \*FILENAME* -> filenames.collect{|fn| expand_path(fn)}.join(", ")
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$1.downcase + '.collect{|fn| expand_path(fn)}'
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else
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arg
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end
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}.join(", ")
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d = %Q[def #{meth}(#{arg_str})
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#{delegation_class}.#{meth}(#{call_arg_str})
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end]
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Shell.notify "Define #{meth}(#{arg_str})", Shell.debug?
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Shell.notify("Definition of #{meth}: ", d,
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Shell.debug.kind_of?(Integer) && Shell.debug > 1)
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eval d
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end
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end
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#
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# CommandProcessor.install_system_commands(pre)
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# pre: String - command name prefix
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# defines every command which belongs in default_system_path via
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# CommandProcessor.command(). It doesn't define already defined
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# methods twice. By default, "pre_" is prefixes to each method
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# name. Characters that may not be used in a method name are
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# all converted to '_'. Definition errors are just ignored.
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#
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def self.install_system_commands(pre = "sys_")
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defined_meth = {}
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for m in Shell.methods
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defined_meth[m] = true
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end
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sh = Shell.new
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for path in Shell.default_system_path
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next unless sh.directory? path
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sh.cd path
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sh.foreach do
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|cn|
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if !defined_meth[pre + cn] && sh.file?(cn) && sh.executable?(cn)
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command = (pre + cn).gsub(/\W/, "_").sub(/^([0-9])/, '_\1')
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begin
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def_system_command(command, sh.expand_path(cn))
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rescue
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Shell.notify "warn: Can't define #{command} path: #{cn}"
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end
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defined_meth[command] = command
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end
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end
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end
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end
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#----------------------------------------------------------------------
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#
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# class initializing methods -
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#
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#----------------------------------------------------------------------
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def self.add_delegate_command_to_shell(id)
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id = id.intern if id.kind_of?(String)
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name = id.id2name
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if Shell.method_defined?(id)
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Shell.notify "warn: override definnition of Shell##{name}."
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Shell.notify "warn: alias Shell##{name} to Shell##{name}_org.\n"
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Shell.module_eval "alias #{name}_org #{name}"
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end
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Shell.notify "method added: Shell##{name}.", Shell.debug?
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Shell.module_eval(%Q[def #{name}(*args, &block)
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begin
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@command_processor.__send__(:#{name}, *args, &block)
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rescue Exception
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$@.delete_if{|s| /:in `__getobj__'$/ =~ s} #`
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$@.delete_if{|s| /^\\(eval\\):/ =~ s}
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raise
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end
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end], __FILE__, __LINE__)
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if Shell::Filter.method_defined?(id)
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Shell.notify "warn: override definnition of Shell::Filter##{name}."
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Shell.notify "warn: alias Shell##{name} to Shell::Filter##{name}_org."
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Filter.module_eval "alias #{name}_org #{name}"
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end
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Shell.notify "method added: Shell::Filter##{name}.", Shell.debug?
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Filter.module_eval(%Q[def #{name}(*args, &block)
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begin
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self | @shell.__send__(:#{name}, *args, &block)
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rescue Exception
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$@.delete_if{|s| /:in `__getobj__'$/ =~ s} #`
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$@.delete_if{|s| /^\\(eval\\):/ =~ s}
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raise
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end
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end], __FILE__, __LINE__)
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end
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#
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# define default builtin commands
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#
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def self.install_builtin_commands
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# method related File.
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# (exclude open/foreach/unlink)
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normal_delegation_file_methods = [
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["atime", ["FILENAME"]],
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["basename", ["fn", "*opts"]],
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["chmod", ["mode", "*FILENAMES"]],
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["chown", ["owner", "group", "*FILENAME"]],
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["ctime", ["FILENAMES"]],
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["delete", ["*FILENAMES"]],
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["dirname", ["FILENAME"]],
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["ftype", ["FILENAME"]],
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["join", ["*items"]],
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["link", ["FILENAME_O", "FILENAME_N"]],
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["lstat", ["FILENAME"]],
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["mtime", ["FILENAME"]],
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["readlink", ["FILENAME"]],
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["rename", ["FILENAME_FROM", "FILENAME_TO"]],
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# ["size", ["FILENAME"]],
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["split", ["pathname"]],
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["stat", ["FILENAME"]],
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["symlink", ["FILENAME_O", "FILENAME_N"]],
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["truncate", ["FILENAME", "length"]],
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["utime", ["atime", "mtime", "*FILENAMES"]]]
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def_builtin_commands(File, normal_delegation_file_methods)
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alias_method :rm, :delete
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|
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# method related FileTest
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def_builtin_commands(FileTest,
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FileTest.singleton_methods.collect{|m| [m, ["FILENAME"]]})
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|
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# method related ftools
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normal_delegation_ftools_methods = [
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["syscopy", ["FILENAME_FROM", "FILENAME_TO"]],
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["copy", ["FILENAME_FROM", "FILENAME_TO"]],
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["move", ["FILENAME_FROM", "FILENAME_TO"]],
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["compare", ["FILENAME_FROM", "FILENAME_TO"]],
|
|
["safe_unlink", ["*FILENAMES"]],
|
|
["makedirs", ["*FILENAMES"]],
|
|
# ["chmod", ["mode", "*FILENAMES"]],
|
|
["install", ["FILENAME_FROM", "FILENAME_TO", "mode"]],
|
|
]
|
|
def_builtin_commands(File,
|
|
normal_delegation_ftools_methods)
|
|
alias_method :cmp, :compare
|
|
alias_method :mv, :move
|
|
alias_method :cp, :copy
|
|
alias_method :rm_f, :safe_unlink
|
|
alias_method :mkpath, :makedirs
|
|
end
|
|
|
|
end
|
|
end
|