Add simple TeX parser based on flex/bison. * libinterp/corefcn/oct-tex-lexer.ll, libinterp/corefcn/oct-tex-pareser.yy: New files. * libinterp/Makefile.am (BUILT_SOURCES): Add oct-tex-lexer.cc and oct-tex-parser.cc. * libinterp/corefcn/modules.mk (corefcn/oct-tex-lexer.cc, corefcn/oct-tex-parser.h): New rules. * libinterp/corefcn/txt-eng-ft.h (ft_render::text_to_pixels, ft_render::get_extent): Add interpreter argument. * libinterp/corefcn/txt-eng-ft.cc (ft_render::text_to_pixels, ft_render::get_extent): Likewise. Use text_parser::parse(). * libinterp/corefcn/gl-render.cc (opengl_renderer::text_to_pixels): Use new interpreter argument. * libinterp/corefcn/graphics.cc (axes::properties::get_ticklabel_extents): Likewise. (uicontrol::properties::update_text_extent): Use text_parser::parse. * libinterp/corefcn/txt-eng.h (memory, string, caseless-str.h, dMatrix.h): New includes. (class text_element_subscript): Renamed from text_subscript_element. (class text_element_supserscript): Renamed from text_superscript_element. (class text_element_symbol, class text_element_fontstyle, class text_element_fontname, class text_element_fontsize, class text_element_color): New classes. (text_element_list::text_element_list(text_element*)): New constructor. (text_element_subscript::text_element_subscript(text_element*), text_element_subscript::text_element::subscript(char)): New constructors. (text_element_subscript::elem): New member. (text_element_subscript::get_element): New method. Returns it. (text_element_subscript::~text_element_subscript): New destructor. Delete it. (text_element_subscript::text_element_subscript()): Make default constructor private. (text_element_superscript::text_element_superscript(text_element*), text_element_superscript::text_element::superscript(char)): New constructors. (text_element_superscript::elem): New member. (text_element_superscript::get_element): New method. Returns it. (text_element_superscript::~text_element_superscript): New destructor. Delete it. (text_element_superscript::text_element_superscript()): Make default constructor private. (text_processor::visit(text_element_symbol), text_processor::visit(text_element_fontstyle), text_processor::visit(text_element_fontname), text_processor::visit(text_element_fontsize), text_processor::visit(text_element_color)): New methods. (text_parser::parse): New static method. (class text_parser_tex): New class.

/*

Copyright (C) 2003-2012 John W. Eaton

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/>.

*/

#if !defined (octave_ls_mat4_h)
#define octave_ls_mat4_h 1

extern oct_mach_info::float_format
mopt_digit_to_float_format (int mach);

extern int
float_format_to_mopt_digit (oct_mach_info::float_format flt_fmt);

extern int
read_mat_file_header (std::istream& is, bool& swap, int32_t& mopt,
                      int32_t& nr, int32_t& nc, int32_t& imag,
                      int32_t& len, int quiet = 0);

extern std::string
read_mat_binary_data (std::istream& is, const std::string& filename,
                      octave_value& tc);

extern bool
save_mat_binary_data (std::ostream& os, const octave_value& tc,
                      const std::string& name) ;

#endif