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/* nbdkit
* Copyright Red Hat
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Red Hat nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include "plugin.h"
/* Is a callback defined? */
int
callback_defined (const char *name, PyObject **obj_rtn)
{
PyObject *obj;
assert (script != NULL);
assert (module != NULL);
obj = PyObject_GetAttrString (module, name);
if (!obj) {
PyErr_Clear (); /* Clear the AttributeError from testing attr. */
return 0;
}
if (!PyCallable_Check (obj)) {
nbdkit_debug ("object %s isn't callable", name);
Py_DECREF (obj);
return 0;
}
if (obj_rtn != NULL)
*obj_rtn = obj;
else
Py_DECREF (obj);
return 1;
}
/* Convert bytes/str/unicode into a string. Caller must free. */
char *
python_to_string (PyObject *str)
{
if (str) {
if (PyUnicode_Check (str))
return strdup (PyUnicode_AsUTF8 (str));
else if (PyBytes_Check (str))
return strdup (PyBytes_AS_STRING (str));
}
return NULL;
}
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