Class: GLI::Commands::HelpModules::TextWrapper

Inherits:
Object
  • Object
show all
Defined in:
lib/gli/commands/help_modules/text_wrapper.rb

Overview

Handles wrapping text

Instance Method Summary collapse

Constructor Details

#initialize(width, indent) ⇒ TextWrapper

Create a text_wrapper wrapping at the given width, and indent.



8
9
10
11
 
# File 'lib/gli/commands/help_modules/text_wrapper.rb', line 8

def initialize(width,indent)
  @width = width
  @indent = indent
end

Instance Method Details

#wrap(text) ⇒ Object

Return a wrapped version of text, assuming that the first line has already been indented by @indent characters. Resulting text does NOT have a newline in it.



15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
 
# File 'lib/gli/commands/help_modules/text_wrapper.rb', line 15

def wrap(text)
  return text if text.nil?
  wrapped_text = ''
  current_graf = ''

  paragraphs = text.split(/\n\n+/)
  paragraphs.each do |graf|
    current_line = ''
    current_line_length = @indent

    words = graf.split(/\s+/)
    current_line = words.shift || ''
    current_line_length += current_line.length

    words.each do |word|
      if current_line_length + word.length + 1 > @width
        current_graf << current_line << "\n"
        current_line = ''
        current_line << ' ' * @indent << word
        current_line_length = @indent + word.length
      else
        if current_line == ''
          current_line << word
        else
          current_line << ' ' << word
        end
        current_line_length += (word.length + 1)
      end
    end
    current_graf << current_line
    wrapped_text << current_graf  << "\n\n" << ' ' * @indent
    current_graf = ''
  end
  wrapped_text.gsub(/[\n\s]*\Z/,'')
end