Module: SvgDrawer::Utils::Text

Defined in:
lib/svg_drawer/utils/text.rb

Constant Summary collapse

DEFAULT_WORD_PATTERN = 
/
  [[:word:]]+         # chars
  [^[:word:]]         # delimiter
  \s?                 # optional space
  (?![^[:word:]])     # not followed by delimiter
  |
  [[:word:]]+         # chars
  |
  [^[:word:]]         # delimiter
/x

Class Method Summary collapse

Class Method Details

.truncate(text, maxlen, trailer = '...') ⇒ Object 



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# File 'lib/svg_drawer/utils/text.rb', line 17

def truncate(text, maxlen, trailer = '...')
  return text unless text.length > maxlen
  raise if maxlen < trailer.length
  text.slice(0, maxlen - trailer.length).concat(trailer)
end

.word_wrap(txt, maxlen, word_pattern = DEFAULT_WORD_PATTERN) ⇒ Object

Wrap on any word delimiter, but consider a word followed by a single delimiter and a space as unwrappable (e.g. end of sentence)

If word itself is longer than max line length, force-wrap it on any char (effectively slicing it at maxlen)



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# File 'lib/svg_drawer/utils/text.rb', line 30

def word_wrap(txt, maxlen, word_pattern = DEFAULT_WORD_PATTERN)
  words = txt.scan(word_pattern)

  words.each_with_object(['']) do |word, lines|
    last = lines.last
    wordlen = word.rstrip.length

    if wordlen > maxlen
      lines.concat(word.scan(/.{1,#{maxlen}}/))
    elsif last != '' && last.length + wordlen > maxlen
      lines << word
    else
      lines.last << word
    end
  end.delete_if(&:empty?).each(&:strip!)
end