Structr

Bind plain text to Ruby classes.

Inspired by ROXML http://github.com/Empact/roxml/tree/master

Usage

require 'structr'

Load = Struct.new(:one, :five, :fifteen)
ProcessItem = Struct.new(:pid, :user)

class Top
include Structr

converter :load do |one, five, fifteen|
  Load.new(one.to_f, five.to_f, fifteen.to_f)
end

converter :process do |pid, user|
  ProcessItem.new(pid.to_i, user)
end

field_accessor  :uptime, /top - (\d+):(\d+):(\d+)/ do |h, m, s|
  h.to_i * 3600 + m.to_i * 60 + s.to_i
end
field_accessor  :cpu_string, /(Cpu.*?)\n/
load_accessor   :load, /load average: (\d+\.\d+), (\d+\.\d+), (\d+\.\d+)/
int_accessor    :tasks, /Tasks:\s+(\d+)/
int_accessor    :memory, /Mem:\s+(\d+)/
field           :processes, /^\s*(\d+)\s(\S+)/, &converter(:process)

def processes
  @processes
end

def users
  @processes.map {|p| p.user }.uniq
end

def highest_pid
  @processes.map {|p| p.pid }.sort.last
end
end

top = Top.structr(`top -b -n 1`)

puts "Load is #{top.load.one}"
puts "Up since #{top.uptime} seconds"
puts top.cpu_string
puts "#{top.tasks} Tasks"
puts "#{top.memory / 1024}MB memory available"
puts "Users: #{top.users.join(", ")}"
puts "Highest PID: #{top.highest_pid}"

Examples

See examples/ for further examples

Installation

Installation

gem install structr

Authors:

• Peter Suschlik

Changelog

See CHANGELOG file.