lib/git_trend/formatters/text_formatter.rb
require "mb_string"
module GitTrend::Formatters
class TextFormatter
HEADER_COLUMNS = %w[no. name lang star description].freeze
DEFAULT_COLUMNS_SIZES = [3, 40, 10, 6, 20].freeze
def print(projects, options)
if projects.empty?
render_zero
return
end
@enable_description = options[:enable_description]
rule_columns_sizes(projects)
render_header
render_body(projects)
render_footer
end
def print_languages(languages)
puts languages
puts
puts "#{languages.size} languages"
puts "you can get only selected language list with '-l' option."
puts "if languages is unknown, you can specify 'unkown'."
puts
end
private
def render_zero
puts "It looks like we don’t have any trending repositories."
puts
end
def rule_columns_sizes(projects)
@columns_sizes = DEFAULT_COLUMNS_SIZES.dup
rule_max_column_size(projects, :name)
rule_max_column_size(projects, :lang)
rule_max_description_size if @enable_description
@columns_sizes.pop unless @enable_description
end
def rule_max_description_size
terminal_width, _terminal_height = detect_terminal_size
description_width = terminal_width - @columns_sizes[0..-2].sum - (@columns_sizes.size - 1)
if description_width >= DEFAULT_COLUMNS_SIZES.last
@columns_sizes[-1] = description_width
else
@enable_description = false
end
end
def rule_max_column_size(projects, attr)
index = HEADER_COLUMNS.index(attr.to_s)
max_size = max_size_of(projects, attr)
@columns_sizes[index] = max_size if max_size > @columns_sizes[index]
end
def max_size_of(projects, attr)
projects.max_by { |project| project.send(attr).size }.send(attr).size
end
def render_header
header = HEADER_COLUMNS.map(&:capitalize)
header.pop unless @enable_description
f = @columns_sizes
fmt = "%#{f[0]}s %-#{f[1]}s %-#{f[2]}s %#{f[3]}s"
fmt << " %-#{f[4]}s" if @enable_description
puts (fmt % header).rstrip
puts fmt % @columns_sizes.map { |column| "-" * column }
end
# rubocop:disable Metrics/AbcSize
def render_body(projects)
f = @columns_sizes
fmt = "%#{f[0]}s %-#{f[1]}s %-#{f[2]}s %#{f[3]}s"
description_fmt = ""
projects.each_with_index do |project, i|
data = [i + 1, [project.name, project.lang, project.star_count.to_s]].flatten
if @enable_description
description = project.description.mb_truncate(f.last)
data << description
mb_char_size = description.display_width - description.size
description_fmt = " %-#{f.last - mb_char_size}s"
end
result = "#{fmt}#{description_fmt}" % data
puts result.rstrip
end
end
# rubocop:enable Metrics/AbcSize
def render_footer
puts
end
# https://github.com/cldwalker/hirb/blob/master/lib/hirb/util.rb#L61-71
# rubocop:disable all
def detect_terminal_size
if (ENV["COLUMNS"] =~ /^\d+$/) && (ENV["LINES"] =~ /^\d+$/)
[ENV["COLUMNS"].to_i, ENV["LINES"].to_i]
elsif (RUBY_PLATFORM =~ /java/ || (!STDIN.tty? && ENV["TERM"])) && command_exists?("tput")
[`tput cols`.to_i, `tput lines`.to_i]
elsif STDIN.tty? && command_exists?("stty")
`stty size`.scan(/\d+/).map(&:to_i).reverse
end
rescue
nil
end
# rubocop:enable all
def command_exists?(command)
ENV["PATH"].split(File::PATH_SEPARATOR).any? { |d| File.exist? File.join(d, command) }
end
end
end