Support TeX elements in FreeType renderer. * libinterp/corefcn/txt-eng.cc: New file. Contains mapping from symbol name to character code, in Unicode and MS symbol. * libinterp/corefcn/modules.mk (COREFCN_SRC): Add txt-eng.cc. * libinterp/corefcn/oct-tex-lexer.ll: Add "\n" to rules applicable to ".", as the latter does not include new line characters. * libinterp/corefcn/oct-tex-parser.yy: Remove debug statements. * libinterp/corefcn/txt-eng.ft.cc (gripe_missing_glyph, gripe_glyph_render): Change signature from char to FT_ULong. (ft_render::ft_render): Adapt to new/removed members. (ft_render::~ft_render): Remove use of fonts member. (ft_render::set_font): Likewise. Use font instead. (ft_render::push_new_line): Likewise. Change meaning of yoffset and initialize line_yoffset. (ft_render::update_line_bbox): New method. (ft_render::set_mode): Change meaning of yoffset and initialize line_yoffset. (ft_render::process_character): New method. (ft_render::visit(text_element_string)): Use it. (ft_render::visit(text_element_list), ft_render::visit(text_element_subscript), ft_render::visit(text_element_superscript), ft_render::visit(text_element_color), ft_render::visit(text_element_fontsize), ft_render::visit(text_element_fontname), ft_render::visit(text_element_fontstyle), ft_render::visit(text_element_symbol)): New methods. (ft_render::set_color): Use color member instead of red/green/blue. * libinterp/corefcn/txt-eng-ft.h (ft_render::visit(text_element_list), ft_render::visit(text_element_subscript), ft_render::visit(text_element_superscript), ft_render::visit(text_element_color), ft_render::visit(text_element_fontsize), ft_render::visit(text_element_fontname), ft_render::visit(text_element_fontstyle), ft_render::visit(text_element_symbol)): New methods. (ft_render::update_line_bbox, ft_render::process_character): New methods. (ft_render::current_face): Removed method.i (ft_render::font): New member, replaces obsolete ft_render::fonts. (ft_render::line_yoffset): New member. (ft_render::color): New member, replaces obsolete red, green and blue. (ft_render::ft_font::ft_font()): Implement default constructor. (ft_render::ft_font::operator=): Fix incorrect use of FT_Reference_Face return value. (ft_render::ft_font::is_valid): New method. * libinterp/corefcn/txt-eng.h (class text_element_symbol, class text_element_fontname, class text_element_fontsize, class text_element_fontname, class text_element_fontstyle, class text_element_color): Add forward definition. (text_element_symbol::invalid_code): New enum. (text_element_symbol::code): New member. (text_element_symbol::text_element_symbol): Initialize it. (text_element_symbol::get_symbol_code): New method. (text_element_fontstyle::get_fontstyle): New method. (text_element_fontname::get_fontname): Renamed from fontname. (text_element_fontsize::get_fontsize): Renamed from fontsize.

/*

Copyright (C) 2012 Iain Murray

This file is part of Octave.

Octave 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 3 of the License, or (at your
option) any later version.

Octave 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 Octave; see the file COPYING.  If not, see
<http://www.gnu.org/licenses/>.

*/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "defun.h"
#include "nproc.h"

DEFUN (nproc, args, nargout,
   "-*- texinfo -*-\n\
@deftypefn  {Built-in Function} {} nproc ()\n\
@deftypefnx {Built-in Function} {} nproc (@var{query})\n\
Return the current number of available processors.\n\
\n\
If called with the optional argument @var{query}, modify how processors\n\
are counted as follows:\n\
\n\
@table @code\n\
@item all\n\
total number of processors.\n\
\n\
@item current\n\
processors available to the current process.\n\
\n\
@item overridable\n\
likewise, but overridable through the @w{@env{OMP_NUM_THREADS}} environment\n\
variable.\n\
@end table\n\
@end deftypefn")
{
  octave_value retval;

  int nargin = args.length ();

  if ((nargin != 0 && nargin != 1) || (nargout != 0 && nargout != 1))
    {
      print_usage ();
      return retval;
    }

  nproc_query query = NPROC_CURRENT;
  if (nargin == 1)
    {
      std::string arg = args(0).string_value ();

      std::transform (arg.begin (), arg.end (), arg.begin (), tolower);

      if (arg == "all")
        query = NPROC_ALL;
      else if (arg == "current")
        query = NPROC_CURRENT;
      else if (arg == "overridable")
        query = NPROC_CURRENT_OVERRIDABLE;
      else
        {
          error ("nproc: invalid value for QUERY");
          return retval;
        }
    }

  retval = num_processors (query);

  return retval;
}

/*
## Must always report at least 1 cpu available
%!assert (nproc () >= 1);
*/