Class: PPCommand

Inherits:
Object
  • Object
show all
Defined in:
lib/ppcommand.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.execute ⇒ Object 



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# File 'lib/ppcommand.rb', line 9

def self.execute
  self.new.execute(ARGV)
end

Instance Method Details

#execute(argv) ⇒ Object 



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# File 'lib/ppcommand.rb', line 77

def execute(argv)
  opts = {:type => "auto"}
  opp = OptionParser.new

  opp.banner = "pp [options] [file|URI]"
  opp.on_tail("-h", "--help", "show this help.") do
    puts opp
    exit
  end
  opp.on_tail("-v", "--version", "show version.") do
    puts "ppcommand " + File.read(File.dirname(__FILE__) + "/../VERSION")
    exit
  end

  opp.on("-c", "--csv", "parse CSV and pp."){|x| opts[:type] = "csv"}
  opp.on("-C", "--csvtable", "parse CSV, add labels and pp."){|x| opts[:type] = "csvtable"}
  opp.on("-H", "--html", "parse HTML and pp."){|x| opts[:type] = "html"}
  opp.on("-j", "--json", "parse JSON and pp."){|x| opts[:type] = "json"}
  opp.on("-x", "--xml", "parse XML using REXML and pp."){|x| opts[:type] = "xml"}
  opp.on("-X", "--xmlsimple", "parse XML using XMLSimple and pp."){|x| opts[:type] = "xmlsimple"}
  opp.on("-y", "--yaml", "parse YAML and pp."){|x| opts[:type] = "yaml"}

  opp.on("-t", "--text", "do not parse. print plain text."){|x| opts[:type] = "text"}

  opp.parse!(argv)

  file = argv.shift

  source = ""
  if file.nil?
    source = STDIN.read
  elsif file=~ %r{^https?://}
    require 'open-uri'
    open(file) do |io|
      source = io.read
      if opts[:type] == "auto"
        t = io.content_type
        if t =~ /json/
          opts[:type] = "json"
        elsif t =~ /yaml/
          opts[:type] = "yaml"
        elsif t =~ /csv/
          opts[:type] = "csv"
        elsif t =~ /html/
          opts[:type] = "html"
        elsif t =~ /xml/
          opts[:type] = "xml"
        end
      end
    end
  else
    source = File.read(file)
  end

  if opts[:type] == "auto"
    if file =~ /\.xml$/i
      opts[:type] = "xml"
    elsif file =~ /\.json$/i
      opts[:type] = "json"
    elsif file =~ /\.(?:csv|txt)$/i
      opts[:type] = "csv"
    elsif file =~ /\.html$/i
      opts[:type] = "html"
    else
      opts[:type] = "yaml"
    end
  end
  
  case opts[:type]
  when "xml"
    pp_xml(source)
  when "xmlsimple"
    pp_xmlsimple(source)
  when "json"
    pp_json(source)
  when "csv"
    pp_csv(source)
  when "csvtable"
    pp_csvtable(source)
  when "html"
    pp_html(source)
  when "text"
    puts source
  else "yaml"
    pp_yaml(source)
  end
end

#get_att_list(node, itab = 0) ⇒ Object 



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# File 'lib/ppcommand.rb', line 195

def get_att_list(node, itab = 0)
  att_list = ''
  node.attributes.each { |attribute, val| att_list += "\n" + (" " * itab) + " #{attribute} = \"#{val}\"" }
  att_list
end

#pp_csv(source) ⇒ Object 



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# File 'lib/ppcommand.rb', line 37

def pp_csv(source)
  require 'csv'
  pp CSV.parse(source)
end

#pp_csvtable(source) ⇒ Object 



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# File 'lib/ppcommand.rb', line 42

def pp_csvtable(source)
  require 'csv'
  data = CSV.parse(source)
  keys = data.shift
  result = []
  data.each do |values|
    entry = []
    i = nil
    keys.each_with_index do |k, i|
      entry << [i, k, values[i]]
    end
    if keys.length < values.length
      values[i + 1 .. -1].each_with_index do |v, j|
        entry << [i + j + 1, nil, v]
      end
    end
    result << entry
  end
  pp result
  # data.map {|values| Hash[* [keys,values].transpose.flatten] }
end

#pp_html(source) ⇒ Object 



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# File 'lib/ppcommand.rb', line 64

def pp_html(source)
  begin
    require 'nokogiri'
  rescue Exception => e
    STDERR.puts "'nokogiri' is required to parse HTML."
    STDERR.puts "$ sudo gem install nokorigi"
    return
  end
  doc = Nokogiri.HTML(source)
  # doc.serialize(:encoding => 'UTF-8', :save_with =>  Nokogiri::XML::Node::SaveOptions::FORMAT | Nokogiri::XML::Node::SaveOptions::AS_XML)
  pp doc
end

#pp_json(source) ⇒ Object 



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# File 'lib/ppcommand.rb', line 25

def pp_json(source)
  require 'rubygems'
  require 'json'
  pp JSON.parse(source)
end

#pp_xml(source) ⇒ Object 



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# File 'lib/ppcommand.rb', line 13

def pp_xml(source)
  require 'rubygems'
  require 'rexml/document'
  puts pretty_xml(REXML::Document.new(source))
end

#pp_xmlsimple(source) ⇒ Object 



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# File 'lib/ppcommand.rb', line 19

def pp_xmlsimple(source)
  require 'rubygems'
  require 'xmlsimple'
  pp XmlSimple.xml_in(source)
end

#pp_yaml(source) ⇒ Object 



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# File 'lib/ppcommand.rb', line 31

def pp_yaml(source)
  YAML.each_document(StringIO.new(source)) do |obj|
    pp obj
  end
end

#pretty_xml(doc) ⇒ Object 



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# File 'lib/ppcommand.rb', line 201

def pretty_xml(doc)
  buffer = ''
  xml_declaration = doc.to_s.match('<\?.*\?>').to_s
  buffer += "#{xml_declaration}\n" if not xml_declaration.nil?
  xml_doctype = doc.to_s.match('<\!.*\">').to_s
  buffer += "#{xml_doctype}\n" if not xml_doctype.nil?
  buffer += "<#{doc.root.name}#{get_att_list(doc.root)}"
  if doc.root.to_a.length > 0
    buffer +=">\n#{x_pretty_print(doc.root,2)}</#{doc.root.name}>"
  else
    buffer += " />\n"
  end
end

#x_pretty_print(parent_node, itab) ⇒ Object

original from snippets.dzone.com/posts/show/4953



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# File 'lib/ppcommand.rb', line 167

def x_pretty_print(parent_node, itab)
  buffer = ''
  parent_node.elements.each do |node|
  buffer += ' ' * itab + "<#{node.name}#{get_att_list(node, itab)}"
    if node.to_a.length > 0
      buffer += ">"
      if node.text.nil?
        buffer += "\n"
        buffer += x_pretty_print(node,itab+2) 
        buffer += ' ' * itab + "</#{node.name}>\n"
      else
        node_text = node.text.strip
        if node_text != ''
          buffer += node_text 
          buffer += "</#{node.name}>\n"        
        else
          buffer += "\n" + x_pretty_print(node,itab+2) 
          buffer += ' ' * itab + "</#{node.name}>\n"        
        end
      end
    else
      buffer += " />\n"
    end
    
  end
  buffer
end