Module: ToAsciiLatex

Defined in:
lib/to_ascii_latex.rb,
lib/to_ascii_latex/version.rb

Constant Summary collapse

NBSP =

www.fileformat.info/info/unicode/char/fb01/index.htm www.w3.org/Math/characters/unicode.xml www.johndcook.com/unicode_latex.html

"\u00A0"
MAPPING = 
{}
RE_SPECIALS = 
%w{. | ( ) [ ] { } \ ^ $ + * ?}
RE = 
/#{MAPPING.keys.collect{|c| RE_SPECIALS.include?(c) ? "\\#{c}" : c}.join('|')}/
VERSION = 
"0.1.1"
@@smartquotes = 
false
@@replace_nbsp = 
false

Class Method Summary collapse

Class Method Details

.extended(base) ⇒ Object

Add a hook - whenever a class or module calls ‘extend ToAsciiLatex`, run this code



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# File 'lib/to_ascii_latex.rb', line 57

def self.extended(base)

  # In the context of the extending module or class 
  # (in this case, it will be ToLatex), do the following
  base.class_eval do

    # Define this new method
    def self.new_escape(s)
      s = s.gsub(NBSP, ' ') if @@replace_nbsp
      x = s.gsub(RE){|c| MAPPING[c]} # .gsub('\backslash{}', '\ensuremath{\backslash}')
      warn "Unicode in  #{x.inspect}" if x.delete("^\u{0000}-\u{007F}") != x

      if @@smartquotes
        i = 0
        x.gsub!('"'){|q| i += 1; (i % 2 == 0) ? "''" : "``"}
      end

      return x
    end

    # Set up aliases. 
    # We're already in the context of the class, but there's no
    # `self.alias`, so we need to call `alias` inside this block
    class << self

      # We can call the original `escape` method with `old_escape`
      alias :old_escape :escape

      # If we call `escape`, now we'll get our `new_escape` method
      alias :escape :new_escape
    end
  end

end

.replace_nbsp ⇒ Object 



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# File 'lib/to_ascii_latex.rb', line 16

def self.replace_nbsp
  @@replace_nbsp
end

.replace_nbsp=(v) ⇒ Object 



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# File 'lib/to_ascii_latex.rb', line 19

def self.replace_nbsp=(v)
  raise "Unexpected value #{v.inspect} for replace_nbsp" unless [true, false].include?(v)
  @@replace_nbsp = v
end

.smartquotes ⇒ Object 



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# File 'lib/to_ascii_latex.rb', line 9

def self.smartquotes
  @@smartquotes
end

.smartquotes=(v) ⇒ Object 



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# File 'lib/to_ascii_latex.rb', line 12

def self.smartquotes=(v)
  raise "Unexpected value #{v.inspect} for smartquotes" unless [true, false].include?(v)
  @@smartquotes = v
end