Class: Dap::Output::OutputLines

Inherits:
Object
  • Object
show all
Includes:
FileDestination
Defined in:
lib/dap/output.rb

Overview

Line Output (CSV, TSV, etc) XXX: Quoted field handling is not supported, CSV should be a new output type

Constant Summary collapse

FIELD_WILDCARD = 
'_'

Instance Attribute Summary collapse

Attributes included from FileDestination

#fd

Instance Method Summary collapse

Methods included from FileDestination

#close, #open, #sanitize, #start, #stop

Constructor Details

#initialize(args) ⇒ OutputLines

Returns a new instance of OutputLines.



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# File 'lib/dap/output.rb', line 73

def initialize(args)
  file = nil
  self.delimiter = ","
  self.fields    = FIELD_WILDCARD

  header = false

  args.each do |str|
    k,v = str.split('=', 2)
    case k
    when 'file'
      file = v
    when 'header'
      header = ( v =~ /^[ty1]/i ? true : false )
    when 'fields'
      self.fields = v.split(',')
    when 'delimiter'
      self.delimiter =
        case v.to_s
        when 'tab'
          "\t"
        when 'null'
          "\x00"
        else
          v
        end
    end
  end
  self.open(file)

  if header and not fields.include?(FIELD_WILDCARD)
    self.fd.puts self.fields.join(self.delimiter)
    self.fd.flush
  end

end

Instance Attribute Details

#delimiter ⇒ Object

Returns the value of attribute delimiter.



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# File 'lib/dap/output.rb', line 68

def delimiter
  @delimiter
end

#fields ⇒ Object

Returns the value of attribute fields.



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# File 'lib/dap/output.rb', line 68

def fields
  @fields
end

Instance Method Details

#write_record(doc) ⇒ Object 



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# File 'lib/dap/output.rb', line 110

def write_record(doc)
  out = []

  if self.fields.include?(FIELD_WILDCARD)
    doc.each_pair do |k,v|
      out << sanitize(v.to_s)
    end
  else
    self.fields.each do |k|
      out << sanitize(doc[k].to_s)
    end
  end

  return unless out.length > 0

  self.fd.puts out.join(self.delimiter)
  self.fd.flush
end