Question

将给定文本中的长行换行到给定长度。例： 'To be or not to be-that is the question', 5 => To be or not to be -that is the quest ion

Answer 1

这解决了您的问题：

max_length = 5

result = ""
word_array = 'To be or not to be-that is the question'.split(/\s|-/)
line = word_array.shift
word_array.each do |word|
  if (line + " " + word).length <= max_length
    line << " " + word
  elsif word.length > max_length
    result << line + "\n" unless line.empty?
    line = ""
    word.each_char do |c|
      line << c
      if line.length == max_length
        result << line + "\n"
        line = ""
      end
    end
  else
    result << line + "\n"
    line = word
  end
end
result << line
puts result

Answer 2

这可能会有所帮助

gosu

https://regex101.com/r/E7FxHg/1

 # http://stackoverflow.com/questions/20431801/word-wrapping-with-regular-expressions/20434776#20434776

 # MS-Windows  "Notepad.exe Word Wrap" simulation
 # ( N = 16 )
 # ------------------
 # Trims optional non-linebreak whitespace
 # external to the viewport
 # ============================
 # Find:     @"(?:(?:(?>(.{1,16})(?:(?<=[^\S\r\n])[^\S\r\n]?|(?<=[,.;:!/?])|(?=\r?\n|[-#%&*@_])|[^\S\r\n]))|(.{1,16}))(?:\r?\n)?|(?:\r?\n))"
 # Replace:  @"$1$2\r\n"
 # Flags:    Global

在Ruby中包含长行

2 个答案: