# Style sheet for PHP
# Copyright (c) 2000 Hartmut Holzgraefe
# $Id:$ 
#

#
# This file is part of a2ps.
# 
# This program 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, or (at your option)
# any later version.
#
# This program 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 this program; see the file COPYING.  If not, write to
# the Free Software Foundation, 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
#

style PHP is
requires a2ps 4.12

written by "Hartmut Holzgraefe <hartmut@six.de>"
version is 0.1
documentation is
"This is a a2ps stylesheet for PHP syntax highlighting "
"(just the PHP part, HTML is left 'as is'). "
"This is my first try on a2ps stylesheets. "
"It works OK for me. If it doesn't come up to "
"your expectatios, then please tell me."
end documentation

first alphabet is
   "abcdefghijklmnopqrstuvwxyz_"
second alphabet is
   "0123456789abcdefghijklmnopqrstuvwxyz_"
case insensitive

keywords in Keyword are
  class, extends, include, require, new
end keywords

keywords in Keyword_strong are
   true, false, 
   return, continue, for, 
   switch, do
   "case", default, break, if, while, else, elseif, 
   endif, endfor, endwhile, endswitch,
   print, echo
end keywords

optional operators are
   -> \rightarrow,
   && \wedge,
   || \vee,
   != \neq,
   == \equiv,
   # We need to protect these, so that <= is not replaced in <<=
   <= \leq,
   >= \geq,
   ! \not
end operators

# Function declaration
operators in Plain are
  # variables
  /\\$[a-z_][a-z_0-9]*/ Label_strong,
  # Functions calls
  /\\(&[[:alnum:]_]+\\)/ Label_strong,
  # Function defs.
  (/^\\([ \t]*\\)\\(function\\)\\([ \t]*\\)\\([a-z_][a-z_0-9]*\\)\\([ \t]*\\)/
        \1 Plain , \2 Label_strong , \3 Plain , \4 Label_strong  , \5 Plain , "(" Plain)
end operators


operators in Keyword_strong are
  "<?", "<?php", "<?=", "?>",
  "<%", "%>",
  (/<\\([^>]*\\)>/ "<", \1, ">")
end operators

sequences are
    "/*" Comment "*/",
    "//" Comment,
    "#" Comment,
    "<!--" Comment "-->",
    C-string,
    C-char,
    "case " Keyword_strong Label : Plain
	exceptions are
	  "':'"
	end exceptions,
  # Tags with arguments (E.g., <a>, <img>, <table>...)
  (/<\\([[:alpha:]]+\\) / "<" Keyword_strong, \1 Keyword_strong, " " Plain) Keyword ">" Keyword_strong
    # Exceptions are double-quoted strings inside tags
    exceptions are
        (/"\\(\\([^"]\\|\\\\.\\)*\\)"/ "\"" Plain, \1 String, "\"" Plain)
    end exceptions
end sequences

end style