/usr/include/octave-3.8.1/octave/oct-env.h is in liboctave-dev 3.8.1-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Copyright (C) 1996-2013 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_oct_env_h)
#define octave_oct_env_h 1
#include <string>
class
OCTAVE_API
octave_env
{
protected:
octave_env (void);
public:
static std::string polite_directory_format (const std::string& name);
static bool absolute_pathname (const std::string& s);
static bool rooted_relative_pathname (const std::string& s);
static std::string base_pathname (const std::string& s);
static std::string
make_absolute (const std::string& s,
const std::string& dot_path = get_current_directory ());
static std::string get_current_directory (void);
static std::string get_home_directory (void);
static std::string get_program_name (void);
static std::string get_program_invocation_name (void);
static std::string get_user_name (void);
static std::string get_host_name (void);
static std::string getenv (const std::string& name);
static void putenv (const std::string& name, const std::string& value);
static bool have_x11_display (void);
static bool chdir (const std::string& newdir);
static void set_program_name (const std::string& s);
private:
static bool instance_ok (void);
std::string do_polite_directory_format (const std::string& name) const;
bool do_absolute_pathname (const std::string& s) const;
bool do_rooted_relative_pathname (const std::string& s) const;
std::string do_base_pathname (const std::string& s) const;
std::string do_make_absolute (const std::string& s,
const std::string& dot_path) const;
std::string do_getcwd (void) const;
std::string do_get_home_directory (void) const;
std::string do_get_user_name (void) const;
std::string do_get_host_name (void) const;
std::string do_getenv (const std::string& name) const;
void do_putenv (const std::string& name, const std::string& value) const;
bool do_chdir (const std::string& newdir);
void do_set_program_name (const std::string& s) const;
void pathname_backup (std::string& path, int n) const;
void error (int) const;
void error (const std::string&) const;
// No copying!
octave_env (const octave_env&);
octave_env& operator = (const octave_env&);
// The real thing.
static octave_env *instance;
static void cleanup_instance (void) { delete instance; instance = 0; }
// TRUE means follow symbolic links that point to directories just
// as if they are real directories.
bool follow_symbolic_links;
// TRUE means that pwd always give verbatim directory, regardless
// of symbolic link following.
bool verbatim_pwd;
// Where are we?
mutable std::string current_directory;
// Etc.
mutable std::string prog_name;
mutable std::string prog_invocation_name;
mutable std::string user_name;
mutable std::string host_name;
};
#endif
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