Class: String

Inherits:
Object
  • Object
show all
Defined in:
lib/wrap.rb

Overview

>> Evan Weaver

> blog.evanweaver.com/articles/2006/09/03/smart-plaintext-wrapping

Instance Method Summary collapse

Instance Method Details

#tail!(pos) ⇒ Object 



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# File 'lib/wrap.rb', line 38

def tail!(pos)
  self[0..pos] = ""
  strip!
end

#wrap(width = 80, hanging_indent = 0, magic_lists = false) ⇒ Object 



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# File 'lib/wrap.rb', line 4

def wrap(width = 80, hanging_indent = 0, magic_lists = false)
  lines = self.split(/\n/)

  lines.collect! do |line|

    if magic_lists 
      line =~ /^([\s\-\d\.\:]*\s)/
    else 
      line =~ /^([\s]*\s)/
    end

    indent = $1.length + hanging_indent rescue hanging_indent

    buffer = ""
    first = true

    while line.length > 0
      first ? (i, first = 0, false) : i = indent              
      pos = width - i

      if line.length > pos and line[0..pos] =~ /^(.+)\s/
        subline = $1
      else 
        subline = line[0..pos]
      end
      buffer += " " * i + subline + "\n"
      line.tail!(subline.length)
    end
    buffer[0..-2]
  end

  lines.join("\n")
end