64 lines
1.6 KiB
Ruby
64 lines
1.6 KiB
Ruby
#--
|
|
# 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 |