Class: Daemonizer::Stats::Table

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

Overview

Container for tabular data.

Instance Method Summary collapse

Constructor Details

#initialize(column_names) ⇒ Table

Returns a new instance of Table.



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# File 'lib/daemonizer/stats.rb', line 40

def initialize(column_names)
	@column_names = column_names
	@rows = []
end

Instance Method Details

#add_row(values) ⇒ Object 



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# File 'lib/daemonizer/stats.rb', line 45

def add_row(values)
	@rows << values.to_a
end

#add_rows(list_of_rows) ⇒ Object 



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# File 'lib/daemonizer/stats.rb', line 49

def add_rows(list_of_rows)
	list_of_rows.each do |row|
		add_row(row)
	end
end

#remove_column(name) ⇒ Object 



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# File 'lib/daemonizer/stats.rb', line 55

def remove_column(name)
	i = @column_names.index(name)
	@column_names.delete_at(i)
	@rows.each do |row|
		row.delete_at(i)
	end
end

#to_s(title = nil) ⇒ Object 



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# File 'lib/daemonizer/stats.rb', line 63

def to_s(title = nil)
	max_column_widths = [1] * @column_names.size
	(@rows + [@column_names]).each do |row|
		row.each_with_index do |value, i|
			max_column_widths[i] = [value.to_s.size, max_column_widths[i]].max
		end
	end

	format_string = max_column_widths.map{ |i| "%#{-i}s" }.join("  ")
	header = sprintf(format_string, *@column_names).rstrip << "\n"
	if title
		free_space = header.size - title.size - 2
		if free_space <= 0
			left_bar_size = 3
			right_bar_size = 3
		else
			left_bar_size = free_space / 2
			right_bar_size = free_space - left_bar_size
		end
		result = "#{BLUE_BG}#{BOLD}#{YELLOW}\n"
		result << "#{"-" * left_bar_size} #{title} #{"-" * right_bar_size}\n"
		if !@rows.empty?
			result << WHITE
			result << header
		end
	else
		result = header.dup
	end
	if @rows.empty?
		result << RESET
	else
		result << ("-" * header.size) << "#{RESET}\n"
		@rows.each do |row|
			result << sprintf(format_string, *row).rstrip << "\n"
		end
	end
	result
end