Module: PG::SafeSys

Defined in:
lib/pg-safesys.rb,
lib/pg-safesys/version.rb

Constant Summary collapse

VERSION = 
"0.0.6"

Instance Method Summary collapse

Instance Method Details

#close_all(*streams) ⇒ Object 



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# File 'lib/pg-safesys.rb', line 53

def close_all(*streams)
  streams.each { |s| s.close }
end

#nix_sys(*commands) ⇒ Object 



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# File 'lib/pg-safesys.rb', line 38

def nix_sys(*commands)
  sh = Session.new
  output = []
  commands.each do |cmd|
    _out, _err = sh.execute cmd
    if sh.exit_status > 0
      sh.close
      raise IOError, "\"#{ cmd }\": #{ _err }"
    end
    output << _out
  end
  sh.close
  output
end

#replace_in_file(filepath, regexp, *args, &block) ⇒ Object 



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# File 'lib/pg-safesys.rb', line 57

def replace_in_file(filepath, regexp, *args, &block)
  content = File.read(filepath).gsub(regexp, *args, &block)
  File.open(filepath, 'wb') { |file| file.write(content) }
end

#safe_system(*cmd) ⇒ Object

NOTE: win_sys executes in separate processes, nix_sys in one shell attempting to cd, for instance, will only work for nix_sys



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# File 'lib/pg-safesys.rb', line 16

def safe_system(*cmd)
  is_windows = (!!RUBY_PLATFORM['mswin32'] || !!RUBY_PLATFORM['mingw'] || !!RUBY_PLATFORM['cygwin'])
  is_windows ? win_sys(*cmd) : nix_sys(*cmd)
end

#win_sys(*commands) ⇒ Object 



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# File 'lib/pg-safesys.rb', line 21

def win_sys(*commands)
  output = []
  commands.each do |cmd|
    _in, _out, _err = Open3.popen3(cmd)
    error = _err.read

    if error != ""
      close_all _in, _out, _err
      raise IOError, "\"#{ cmd }\": #{ error }"
    end

    output << _out.read
    close_all _in, _out, _err
  end
  output
end