Class: SoPretty::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/so-pretty.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Base

Returns a new instance of Base.



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# File 'lib/so-pretty.rb', line 18

def initialize( options = {} )
  @instream  = to_stream( :input,  options[:instream] )
  @outstream = to_stream( :output, options[:outstream] )
  @outformat = options[:format]
end

Class Method Details

.from_cli(argv) ⇒ Object 



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# File 'lib/so-pretty.rb', line 100

def self.from_cli( argv )
  options = {
    :instream  => "-",
    :outstream => "-",
    :format    => :yaml,
  }

  parser = OptionParser.new do |opts|
    opts.banner = "Usage: sp [options]"
    opts.separator ""
    opts.separator "Options:"

    opts.on( "-i", "--input [instream]", "Input stream, one of: '-', 'STDIN', or a file name. default: '-'" ) do |instream|
      options[:instream] = instream
    end

    opts.on( "-o", "--output [outstream]", "Output stream, one of: '-', 'STDOUT', 'STDERR' or a file name. default: '-'" ) do |outstream|
      options[:outstream] = outstream
    end

    opts.on( "-f", "--format [format]", "Output format, one of: 'yaml', 'json', 'ruby', 'minjson'") do |format|
      options[:format] = format.to_sym
    end

    opts.on("-V", "--version", "Show version") do
      puts VERSION
      exit
    end

    opts.separator ""
    opts.separator "Examples:"
    opts.separator EXAMPLES
  end

  parser.parse( argv )

  return self.new( options )
end

Instance Method Details

#close_streams ⇒ Object 



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# File 'lib/so-pretty.rb', line 92

def close_streams
  @instream.flush
  @instream.close

  @outstream.flush
  @outstream.close
end

#parsed ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/so-pretty.rb', line 50

def parsed
  return @parsed if @parsed

  begin
    data = JSON.load( string )
    return @parsed = data
  rescue JSON::ParserError => e
  end

  begin
    data = YAML::load( string )
    return @parsed = data
  rescue Psych::SyntaxError => e
  end

  begin
    data = Kernel.eval( string )
    return @parsed = data
  rescue StandardError => e
  end

  raise ArgumentError, "Input was unparsable as JSON or YAML."
end

#prettify ⇒ Object 



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# File 'lib/so-pretty.rb', line 24

def prettify
  if @outformat == :yaml
    @outstream.puts YAML::dump( parsed )
    return
  end

  if @outformat == :ruby
    if defined?( AwesomePrint )
      @outstream.puts parsed.ai( plain: true, index: false )
    else
      @outstream.puts parsed.inspect
    end

    return
  end

  if @outformat == :minjson
    @outstream.puts JSON.dump( parsed )
    return
  end

  @outstream.puts JSON.pretty_generate( parsed )
ensure
  close_streams
end

#string ⇒ Object 



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# File 'lib/so-pretty.rb', line 74

def string
  return @string if @string

  str = @instream.read

  zstream = Zlib::Inflate.new
  begin
    buf = zstream.inflate(str)
    zstream.finish
    zstream.close

    return @string = buf
  rescue Exception => e
  end

  return @string = str
end