instiki/lib/maruku/output/to_latex_strings.rb

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2007-01-22 15:36:51 +01:00
#--
# Copyright (C) 2006 Andrea Censi <andrea (at) rubyforge.org>
#
# This file is part of Maruku.
#
# Maruku is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# Maruku is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Maruku; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#++
class String
# These are TeX's special characters
LATEX_ADD_SLASH = [ ?{, ?}, ?$, ?&, ?#, ?_, ?%]
# These, we transform to {\tt \char<ascii code>}
LATEX_TO_CHARCODE = [ ?^, ?~, ?>,?<]
def escape_to_latex(s)
s2 = ""
s.each_byte do |b|
if LATEX_TO_CHARCODE.include? b
s2 += "{\\tt \\char#{b}}"
elsif LATEX_ADD_SLASH.include? b
s2 << ?\\ << b
elsif b == ?\\
# there is no backslash in cmr10 fonts
s2 += "$\\backslash$"
else
s2 << b
end
end
s2
end
# escapes special characters
def to_latex
s = escape_to_latex(self)
OtherGoodies.each do |k, v|
s.gsub!(k, v)
end
s
end
# other things that are good on the eyes
OtherGoodies = {
/(\s)LaTeX/ => '\1\\LaTeX\\xspace ', # XXX not if already \LaTeX
# 'HTML' => '\\textsc{html}\\xspace ',
# 'PDF' => '\\textsc{pdf}\\xspace '
}
end