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138 lines (127 loc) · 4.54 KB
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// Copyright Stefan Seefeld 2005.
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#include <boost/python/exec.hpp>
#include <boost/python/borrowed.hpp>
#include <boost/python/dict.hpp>
#include <boost/python/extract.hpp>
#include <boost/python/handle.hpp>
namespace boost
{
namespace python
{
object BOOST_PYTHON_DECL eval(str string, object global, object local)
{
return eval(python::extract<char const *>(string), global, local);
}
object BOOST_PYTHON_DECL eval(char const *string, object global, object local)
{
// Set suitable default values for global and local dicts.
if (global.is_none())
{
if (PyObject *g = PyEval_GetGlobals())
global = object(detail::borrowed_reference(g));
else
global = dict();
}
if (local.is_none()) local = global;
// should be 'char const *' but older python versions don't use 'const' yet.
char *s = const_cast<char *>(string);
PyObject* result = PyRun_String(s, Py_eval_input, global.ptr(), local.ptr());
if (!result) throw_error_already_set();
return object(detail::new_reference(result));
}
object BOOST_PYTHON_DECL exec(str string, object global, object local)
{
return exec(python::extract<char const *>(string), global, local);
}
object BOOST_PYTHON_DECL exec(char const *string, object global, object local)
{
// Set suitable default values for global and local dicts.
if (global.is_none())
{
if (PyObject *g = PyEval_GetGlobals())
global = object(detail::borrowed_reference(g));
else
global = dict();
}
if (local.is_none()) local = global;
// should be 'char const *' but older python versions don't use 'const' yet.
char *s = const_cast<char *>(string);
PyObject* result = PyRun_String(s, Py_file_input, global.ptr(), local.ptr());
if (!result) throw_error_already_set();
return object(detail::new_reference(result));
}
object BOOST_PYTHON_DECL exec_statement(str string, object global, object local)
{
return exec_statement(python::extract<char const *>(string), global, local);
}
object BOOST_PYTHON_DECL exec_statement(char const *string, object global, object local)
{
// Set suitable default values for global and local dicts.
if (global.is_none())
{
if (PyObject *g = PyEval_GetGlobals())
global = object(detail::borrowed_reference(g));
else
global = dict();
}
if (local.is_none()) local = global;
// should be 'char const *' but older python versions don't use 'const' yet.
char *s = const_cast<char *>(string);
PyObject* result = PyRun_String(s, Py_single_input, global.ptr(), local.ptr());
if (!result) throw_error_already_set();
return object(detail::new_reference(result));
}
// Execute python source code from file filename.
// global and local are the global and local scopes respectively,
// used during execution.
object BOOST_PYTHON_DECL exec_file(str filename, object global, object local)
{
return exec_file(python::extract<char const *>(filename), global, local);
}
object BOOST_PYTHON_DECL exec_file(char const *filename, object global, object local)
{
// Set suitable default values for global and local dicts.
if (global.is_none())
{
if (PyObject *g = PyEval_GetGlobals())
global = object(detail::borrowed_reference(g));
else
global = dict();
}
if (local.is_none()) local = global;
// should be 'char const *' but older python versions don't use 'const' yet.
char *f = const_cast<char *>(filename);
#if PY_VERSION_HEX >= 0x03010000
// Let python manage any UTF bits to avoid potential incompatibilities.
PyObject *fo = Py_BuildValue("s", f);
PyObject *fb = Py_None;
PyUnicode_FSConverter(fo, &fb);
char *f_as_uft = PyBytes_AsString(fb);
FILE *fs = fopen(f_as_uft, "r");
Py_DECREF(fo);
Py_DECREF(fb);
#elif PY_VERSION_HEX >= 0x03000000
// Let python open the file to avoid potential binary incompatibilities.
PyObject *fo = Py_BuildValue("s", f);
FILE *fs = fopen(fo, "r");
Py_DECREF(fo);
#else
// Let python open the file to avoid potential binary incompatibilities.
PyObject *pyfile = PyFile_FromString(f, const_cast<char*>("r"));
if (!pyfile) throw std::invalid_argument(std::string(f) + " : no such file");
python::handle<> file(pyfile);
FILE *fs = PyFile_AsFile(file.get());
#endif
PyObject* result = PyRun_File(fs,
f,
Py_file_input,
global.ptr(), local.ptr());
fclose(fs);
if (!result) throw_error_already_set();
return object(detail::new_reference(result));
}
} // namespace boost::python
} // namespace boost