Module: Formatter Private

Defined in:
Library/Homebrew/utils/formatter.rb

Overview

This module is part of a private API. You should avoid using this module if possible, as it may be removed or be changed in the future.

Helper module for formatting output.

Class Method Summary collapse

Class Method Details

.arrow(string, color: nil) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


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# File 'Library/Homebrew/utils/formatter.rb', line 12

def arrow(string, color: nil)
  prefix("==>", string, color)
end

.columns(*objects, gap_size: 2) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


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# File 'Library/Homebrew/utils/formatter.rb', line 82

def columns(*objects, gap_size: 2)
  objects = objects.flatten.map(&:to_s)

  fallback = proc do
    return objects.join("\n").concat("\n")
  end

  fallback.call if objects.empty?
  fallback.call if respond_to?(:tty?) ? !tty? : !$stdout.tty?

  console_width = Tty.width
  object_lengths = objects.map { |obj| Tty.strip_ansi(obj).length }
  cols = (console_width + gap_size) / (object_lengths.max + gap_size)

  fallback.call if cols < 2

  rows = (objects.count + cols - 1) / cols
  cols = (objects.count + rows - 1) / rows # avoid empty trailing columns

  col_width = (console_width + gap_size) / cols - gap_size

  gap_string = "".rjust(gap_size)

  output = +""

  rows.times do |row_index|
    item_indices_for_row = row_index.step(objects.size - 1, rows).to_a

    first_n = item_indices_for_row[0...-1].map do |index|
      objects[index] + "".rjust(col_width - object_lengths[index])
    end

    # don't add trailing whitespace to last column
    last = objects.values_at(item_indices_for_row.last)

    output.concat((first_n + last)
          .join(gap_string))
          .concat("\n")
  end

  output.freeze
end

.error(string, label: nil) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


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# File 'Library/Homebrew/utils/formatter.rb', line 36

def error(string, label: nil)
  label(label, string, :red)
end

.headline(string, color: nil) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


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# File 'Library/Homebrew/utils/formatter.rb', line 16

def headline(string, color: nil)
  arrow("#{Tty.bold}#{string}#{Tty.reset}", color: color)
end

.identifier(string) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


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# File 'Library/Homebrew/utils/formatter.rb', line 20

def identifier(string)
  "#{Tty.green}#{string}#{Tty.default}"
end

.option(string) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


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# File 'Library/Homebrew/utils/formatter.rb', line 24

def option(string)
  "#{Tty.bold}#{string}#{Tty.reset}"
end

.success(string, label: nil) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


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# File 'Library/Homebrew/utils/formatter.rb', line 28

def success(string, label: nil)
  label(label, string, :green)
end

.url(string) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


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# File 'Library/Homebrew/utils/formatter.rb', line 59

def url(string)
  "#{Tty.underline}#{string}#{Tty.no_underline}"
end

.warning(string, label: nil) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 


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# File 'Library/Homebrew/utils/formatter.rb', line 32

def warning(string, label: nil)
  label(label, string, :yellow)
end

.wrap(s, width = 172) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Wraps text to fit within a given number of columns using regular expressions that:

  1. convert hard-wrapped paragraphs to a single line
  2. add line break and indent to subcommand descriptions
  3. find any option descriptions longer than a pre-set length and wrap between words with a hanging indent, without breaking any words that overflow
  4. wrap any remaining description lines that need wrapping with the same indent
  5. wrap all lines to the given width.

See Also:


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# File 'Library/Homebrew/utils/formatter.rb', line 49

def wrap(s, width = 172)
  desc = OPTION_DESC_WIDTH
  indent = width - desc
  s.gsub(/(?<=\S) *\n(?=\S)/, " ")
   .gsub(/([`>)\]]:) /, "\\1\n    ")
   .gsub(/^( +-.+  +(?=\S.{#{desc}}))(.{1,#{desc}})( +|$)\n?/, "\\1\\2\n#{" " * indent}")
   .gsub(/^( {#{indent}}(?=\S.{#{desc}}))(.{1,#{desc}})( +|$)\n?/, "\\1\\2\n#{" " * indent}")
   .gsub(/(.{1,#{width}})( +|$)\n?/, "\\1\n")
end