Module: Softcover::Commands::Exercises

Extended by:
Exercises
Included in:
Exercises
Defined in:
lib/softcover/commands/exercises.rb

Instance Method Summary collapse

Instance Method Details

#add_to_chapters!Object



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# File 'lib/softcover/commands/exercises.rb', line 7

def add_to_chapters!
  require 'securerandom'

  Dir["chapters/*.tex"].each do |path|

  	str = ""

  	in_exercise = false
  	n = 0
  	line_number = 0

  	lines = []
  	File.read(path).each_line { |line| lines.push line }

  	lines.each do |line|
  		str += line

  		case line
  		when %r{\\subsection{Exercises}}
  			in_exercise = true
  		when %r{\\end{enumerate}}
  			in_exercise = false
  		when %r{\\item}
  			if in_exercise && !(lines[line_number + 1] =~ /^%= <span/)
  				str += "%= <span class='exercise' id='ex-#{SecureRandom.hex(3)}'></span>\n"
  				n += 1
  			end
  		end

  		line_number += 1
  	end

  	File.open(path, "w") { |f| f.write str }

      exercises = n == 1 ? "exercise" : "exercises"
  	puts "#{path}: wrote #{n} #{exercises}"
  end
end