Module: Mixlib::ShellOut::Windows::Utils

Defined in:
lib/mixlib/shellout/windows.rb

Class Method Summary collapse

Class Method Details

.executable?(path) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mixlib/shellout/windows.rb', line 313

def self.executable?(path)
  File.executable?(path) && !File.directory?(path)
end

.find_executable(path) ⇒ Object

Windows has a different notion of what “executable” means The OS will search through valid the extensions and look for a binary there.



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# File 'lib/mixlib/shellout/windows.rb', line 303

def self.find_executable(path)
  return path if executable? path

  pathext.each do |ext|
    exe = "#{path}#{ext}"
    return exe if executable? exe
  end
  return nil
end

.pathext ⇒ Object 



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# File 'lib/mixlib/shellout/windows.rb', line 286

def self.pathext
  @pathext ||= ENV['PATHEXT'] ? ENV['PATHEXT'].split(';') + [''] : ['']
end

.should_run_under_cmd?(command) ⇒ Boolean

api: semi-private If there are special characters parsable by cmd.exe (such as file redirection), then this method should return true.

This parser is based on github.com/ruby/ruby/blob/9073db5cb1d3173aff62be5b48d00f0fb2890991/win32/win32.c#L1437

Returns:

  • (Boolean) 


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# File 'lib/mixlib/shellout/windows.rb', line 252

def self.should_run_under_cmd?(command)
  return true if command =~ /^@/

  quote = nil
  env = false
  env_first_char = false

  command.dup.each_char do |c|
    case c
    when "'", '"'
      if (!quote)
        quote = c
      elsif quote == c
        quote = nil
      end
      next
    when '>', '<', '|', '&', "\n"
      return true unless quote
    when '%'
      return true if env
      env = env_first_char = true
      next
    else
      next unless env
      if env_first_char
        env_first_char = false
        env = false and next if c !~ /[A-Za-z_]/
      end
      env = false if c !~ /[A-Za-z1-9_]/
    end
  end
  return false
end

.which(cmd) ⇒ Object

which() mimicks the Unix which command FIXME: it is not working



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# File 'lib/mixlib/shellout/windows.rb', line 292

def self.which(cmd)
  ENV['PATH'].split(File::PATH_SEPARATOR).each do |path|
    exe = find_executable("#{path}/#{cmd}")
    return exe if exe
  end
  return nil
end