### Home Classes Methods

### In Files

- lib/ramaze/bin/helper.rb

### Methods

- #is_running?
- #is_windows?
- #rackup_path

### Class/Module Index

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# Ramaze::Bin::Helper

Module containing various helper methods useful for most commands.

@author Yorick Peterse @author TJ Vanderpoel @since 21-07-2011

### Public Instance Methods

is_running?(pid) click to toggle source

Checks if the specified PID points to a process that's already running.

@author TJ Vanderpoel @since 21-07-2011 @param [String] pid The path to the PID. @return [TrueClass|FalseClass]

    # File lib/ramaze/bin/helper.rb, line 20
    def is_running?(pid)
      return false if !File.exist?(pid)

      pid = File.read(pid).to_i

      if is_windows?
        wmi             = WIN32OLE.connect("winmgmts://")
        processes, ours = wmi.ExecQuery(
          "select * from win32_process where ProcessId = #{pid}"
        ), []

        processes.each { |process| ours << process.Name }

        return ours.first.nil?
      else
        begin
          prio = Process.getpriority(Process::PRIO_PROCESS, pid)
          return true
        rescue Errno::ESRCH
          return false
        end
      end
    end

is_windows?() click to toggle source

Checks if the system the user is using is Windows.

@author TJ Vanderpoel @since 21-07-2011 @return [TrueClass|FalseClass]

    # File lib/ramaze/bin/helper.rb, line 51
    def is_windows?
      return @is_win if @is_win

      begin; require "win32ole"; rescue LoadError; end

      @is_win ||= Object.const_defined?("WIN32OLE")
    end

rackup_path() click to toggle source

Tries to extract the path to the Rackup executable.

@author TJ Vanderpoel @since 21-07-2001 @return [String]

    # File lib/ramaze/bin/helper.rb, line 66
    def rackup_path
      return @rackup_path if @rackup_path

      # Check with 'which' on platforms which support it
      unless is_windows?
        @rackup_path = %{which rackup}.to_s.chomp

        if @rackup_path.size > 0 and File.file?(@rackup_path)
          return @rackup_path
        end
      end

      # check for rackup in RUBYLIB
      libs = ENV["RUBYLIB"].to_s.split(is_windows? ? ";" : ":")

      if rack_lib = libs.detect { |r| r.match %<(\\|/)rack\11>> }
        require "pathname"
        @rackup_path = Pathname.new(rack_lib).parent.join("bin").join(
          "rackup"
        ).expand_path

        return @rackup_path if File.file?(@rackup_path)
      end

      begin
        require "rubygems"
        require "rack"
        require "pathname"

        @rackup_path = Pathname.new(Gem.bindir).join("rackup").to_s

        return @rackup_path if File.file?(@rackup_path)
      rescue LoadError
        nil
      end

      @rackup_path = nil
      abort "Cannot find the path to the Rackup executable"
    end

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