Class: BuildTool::Commands::Shell

Inherits:
SubCommands show all
Defined in:
lib/build-tool/commands.rb

Instance Attribute Summary

Attributes inherited from Base

#cmd, #options, #parent

Instance Method Summary collapse

Methods inherited from SubCommands

#add_command, #complete_arguments, #complete_command, #do_complete, #execute, #get_command, #help_commands, #initialize, #load_commands, #show_help

Methods inherited from Base

#<=>, #applicable?, #cleanup_after_vcs_access, #complete_arguments, #complete_readline, #configuration, #debug, #debug2, #do_complete, #do_execute, #each_option, #error, #execute, #fullname, #info, #initialize, #log?, #setup_options, #show_help, #skip_command, #summarize, #teardown_command, #trace, #usage, #verbose, #warn

Methods included from HelpText

#cmdalias, #description, included, #long_description

Constructor Details

This class inherits a constructor from BuildTool::Commands::SubCommands

Instance Method Details

#cli ⇒ Object Also known as: default_command 



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# File 'lib/build-tool/commands.rb', line 961

def cli
    require 'readline'
    Readline.completion_proc = method(:complete_readline)

    while true

        begin

            line = Readline.readline('> ', true)

            return 0 if line.nil?

            # Ignore whitespace lines
            next if Shellwords.shellwords( line ).length == 0

            # Remove duplicate or empty lines from history
            if line =~ /^\s*$/ or Readline::HISTORY.to_a[-2] == line
                Readline::HISTORY.pop
            end

            # Split the line like bash would do it
            execute Shellwords.shellwords( line )

        rescue BuildTool::Error => e
            error( e.message )
            verbose( e.backtrace.join("\n") )
        rescue StandardError => e
            error( e.message )
            error( e.backtrace.join("\n") )
        rescue Interrupt => e
            info( "Use CTRL-D for exit!" )
        end

    end

    return 0
end

#initialize_options ⇒ Object 



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# File 'lib/build-tool/commands.rb', line 901

def initialize_options
    options.banner = "Usage: #{name} [OPTIONS]... COMMAND [COMMAND OPTIONS]..."

    options.separator ''
    options.separator "Options"

    options.on( "-v", "--verbose", "Enable verbose output" ) do
        Logging.appenders['stdout'].level = [ Logging.appenders['stdout'].level - 1, 0 ].max()
    end

    options.on( nil, "--dry-run", "Enable dry run." ) do
        $noop = true
    end

    options.on( "-V", "--version", "Print version information." ) do
        show_version
    end

    options.on( "--ionice", "Set io io niceness to idle (3)." ) { |n|

        pid = Process.pid()
        system( "ionice -p #{pid} -c 3" )
        cur = `ionice -p #{pid}`
        info( 'Process priority (io niceness): %s' % cur )
    }

    options.on( "--nice N", "Set niceness to N." ) { |n|
        if not /^[0-9]+$/.match( n )
            raise OptionParser::ParseError.new( 'value "%s" is not a number' %  n )
        end

        # Set the priority
        Process.setpriority( Process::PRIO_PROCESS, 0, n.to_i() )

        # Check if it worked.
        cur = Process.getpriority( Process::PRIO_PROCESS, 0 )
        if n.to_i() != cur
            warn( 'Process priority (niceness): %d (%d was given)' % [ cur, n ] )
        else
            info( 'Process priority (niceness): %d' % [ cur ] )
        end
    }

    options.on( "--debug-db", "Debug the database." ) do
        Logging.logger['ActiveRecord'].level = :debug
    end

    super()
end

#name ⇒ Object 



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# File 'lib/build-tool/commands.rb', line 897

def name
    return Pathname.new($0).basename.to_s
end

#setup_command ⇒ Object 



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# File 'lib/build-tool/commands.rb', line 951

def setup_command
    # And the commands require all that database related stuff.
    load_commands( Application::instance.application_root.join( "lib/build-tool/commands" ), BuildTool::Commands )
end

#show_version ⇒ Object 



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# File 'lib/build-tool/commands.rb', line 956

def show_version
    @skip_command = true
    info( "#{name()}: Version #{BuildTool::VERSION}" )
end