Class: ChefDK::Policyfile::Reports::TablePrinter

Inherits:
Object
  • Object
show all
Defined in:
lib/chef-dk/policyfile/reports/table_printer.rb

Overview

Defines a table with a flexible number of columns and prints rows in the table. Columns are defined ahead of time, by calling the #column method, individual rows are printed by calling #print_row with the data for each cell.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ui) {|_self| ... } ⇒ TablePrinter

Returns a new instance of TablePrinter.

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/chef-dk/policyfile/reports/table_printer.rb', line 30

def initialize(ui)
  @ui = ui
  @column_widths = []

  yield self
end

Instance Attribute Details

#ui ⇒ Object (readonly)

Returns the value of attribute ui.



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# File 'lib/chef-dk/policyfile/reports/table_printer.rb', line 28

def ui
  @ui
end

Instance Method Details

#column(collection = []) ⇒ Object

Defines a column. If a collection is given, it is mapped to an array of strings and the longest string is used as the left justify width for that column when rows are printed.



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# File 'lib/chef-dk/policyfile/reports/table_printer.rb', line 40

def column(collection = [])
  @column_widths << (collection.map(&:to_s).map(&:size).max || 0)
end

#print_row(*cells) ⇒ Object

Print a row.



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# File 'lib/chef-dk/policyfile/reports/table_printer.rb', line 45

def print_row(*cells)
  row = ""
  cells.each_with_index do |cell_data, i|
    row << cell_data.to_s.ljust(@column_widths[i])
    row << " "
  end
  ui.msg(row.strip)
end