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/* This is a component of LinuxCNC
* Copyright 2011, 2012, 2013 Michael Haberler <git@mah.priv.at>,
* Sebastian Kuzminsky <seb@highlab.com>
*
* 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 of the License, 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; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef PYTHON_PLUGIN_HH
#define PYTHON_PLUGIN_HH
#ifndef BOOST_PYTHON_MAX_ARITY
#define BOOST_PYTHON_MAX_ARITY 4
#endif
#include <boost/python/object.hpp>
#include <vector>
#include <string>
#include <sys/types.h>
extern std::string handle_pyerror();
// PY_EXCEPTION: both exception_msg and error_msg are set
// PY_ERROR: error_msg is set
enum pp_status {
PLUGIN_NO_SECTION = -1,
PLUGIN_NO_INIFILE = -2,
PLUGIN_BAD_INIFILE = -3,
PLUGIN_NO_TOPLEVEL = -4,
PLUGIN_BAD_PATH = -5,
PLUGIN_STAT_FAILED = -6,
PLUGIN_INITTAB_FAILED = -7 ,
PLUGIN_PYTHON_ALREADY_INITIALIZED = -8,
PLUGIN_EXCEPTION_DURING_PATH_PREPEND = -9,
PLUGIN_EXCEPTION_DURING_PATH_APPEND = -10,
PLUGIN_INIT_EXCEPTION = -11,
PLUGIN_PYTHON_NOT_INITIALIZED = -12,
PLUGIN_PATH_TOO_LONG = -13,
// errors < OK make run_string(), is_callable(), and call() fail immediately
// a reload might clear the error
PLUGIN_OK = 0,
PLUGIN_NO_CALLABLE = 1,
PLUGIN_EXCEPTION = 2
};
class PythonPlugin {
public:
// factory method
static PythonPlugin *instantiate(struct _inittab *inittab = NULL);
int configure(const char *iniFilename = NULL, const char *section = NULL);
bool is_callable(const char *module, const char *funcname);
int call(const char *module,const char *callable,
boost::python::object tupleargs, boost::python::object kwargs, boost::python::object &retval);
int run_string(const char *cmd, boost::python::object &retval, bool as_file = false);
int call_method(boost::python::object method, boost::python::object &retval);
int plugin_status() { return status; };
bool usable() { return (status >= PLUGIN_OK); }
int initialize();
std::string last_exception() { return exception_msg; };
std::string last_errmsg() { return error_msg; };
boost::python::object main_namespace;
private:
PythonPlugin(struct _inittab *inittab); // nb: no public constructor
PythonPlugin(const PythonPlugin &) {}; // not copyable
PythonPlugin & operator=(const PythonPlugin&) { return *this; }; // not assignable
~PythonPlugin() {};
int reload();
std::vector<std::string> inittab_entries;
int status;
time_t module_mtime; // toplevel module - last modification time
bool reload_on_change; // auto-reload if toplevel module was changed
const char *toplevel; // toplevel script
// const char *plugin_dir; // directory prefix
const char *abs_path; // normalized path to toplevel module
std::string exception_msg;
std::string error_msg;
int log_level;
};
#endif
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