module ToAsciiLatex

Constants

MAPPING
NBSP: www.fileformat.info/info/unicode/char/fb01/index.htm www.w3.org/Math/characters/unicode.xml www.johndcook.com/unicode_latex.html
RE
RE_SPECIALS
VERSION

Public Class Methods

escape(s)

If we call `escape`, now we'll get our `new_escape` method

Also aliased as: old_escape

Alias for: new_escape

extended(base) click to toggle source

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

# File lib/to_ascii_latex.rb, line 59
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

new_escape(s) click to toggle source

Define this new method

# File lib/to_ascii_latex.rb, line 66
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

Also aliased as: escape

old_escape(s)

We can call the original `escape` method with `old_escape`

Alias for: escape

replace_nbsp() click to toggle source

# File lib/to_ascii_latex.rb, line 16
def self.replace_nbsp
  @@replace_nbsp
end

replace_nbsp=(v) click to toggle source

# 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() click to toggle source

# File lib/to_ascii_latex.rb, line 9
def self.smartquotes
  @@smartquotes
end

smartquotes=(v) click to toggle source

# 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