Sha256: 8cd94d39e0ff4e8c26dc621594d829537b7641aa3abe84371c5d176a85b0bf68
Contents?: true
Size: 1.73 KB
Versions: 10
Compression:
Stored size: 1.73 KB
Contents
#!/usr/bin/env ruby
require 'optparse'
options = {}
options[:padding] = 5
options[:count] = 0
OptionParser.new do |opts|
opts.banner = "Usage: #{$0} [OPTIONS]"
opts.on('-w', '--width [NUMBER]', 'Width of the horizontal ruler (custom).') do |value|
options[:width] = value.to_i
end
opts.on('-p', '--padding [NUMBER]', 'Padding for numbers on the left.') do |value|
options[:padding] = value.to_i
end
opts.on('-c', '--count [NUMBER]', 'Count lines starting from.') do |value|
options[:count] = value.to_i
end
end.parse!
required_options = [:padding, :count]
required_options.each do |option|
unless options[option]
$stderr.puts "Can not run #{option.to_s} was not given."
exit 1
end
end
class Ruler
attr_accessor :length
def initialize(length)
@length = length
end
# we print the number of the column
# in various rows:
# for example first row will print:
# 00000000000
# 00000000011
# 12345678901
def to_s
items = (@length + 1).times.map do |item|
item.to_s.rjust(5, '0').chars
end
items.transpose.map(&:join).join("\n")
end
end
if options[:width]
Ruler.new(options[:width].to_i).to_s.lines.each do |line|
puts (' ' * (options[:padding] + 2)) + line
end
STDIN.each_line do |line|
puts "#{options[:count].to_s.rjust(options[:padding], '0')} | #{line}"
options[:count] += 1
end
else
lines = []
STDIN.each_line do |line|
lines << line
end
exit 0 if lines.empty?
options[:width] = lines.map(&:length).max
Ruler.new(options[:width].to_i).to_s.lines.each do |line|
puts (' ' * (options[:padding] + 2)) + line
end
lines.each do |line|
puts "#{options[:count].to_s.rjust(options[:padding], '0')} |#{line}"
options[:count] += 1
end
end
Version data entries
10 entries across 10 versions & 1 rubygems