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Contents
module ::Af::OptionParser
class Columnizer
# Convert an array into a single string, where each item consumes a static
# number of characters. Long fields are truncated and small ones are padded.
#
# *Arguments*
# * fields - array of objects that respond to "to_s"
# * sized - character count for each field in the new string????
def columnized_row(fields, sized)
r = []
fields.each_with_index do |f, i|
r << sprintf("%0-#{sized[i]}s", f.to_s.gsub(/\\n\\r/, '').slice(0, sized[i]))
end
return r.join(' ')
end
# Converts an array of arrays into a single array of columnized strings.
#
# *Arguments*
# * rows - arrays to convert
# * options - hash of options, includes:
# :max_width => <integer max width of columns>
def columnized(rows, options = {})
sized = {}
rows.each do |row|
row.each_index do |i|
value = row[i]
sized[i] = [sized[i].to_i, value.to_s.length].max
sized[i] = [options[:max_width], sized[i].to_i].min if options[:max_width]
end
end
return rows.map { |row| " " + columnized_row(row, sized).rstrip }
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems