Function py_strseq_to_char

libsigrokdecode4DSL/util.c:489–563

* Convert a Python list of unicode strings to a C string vector. * On success, a pointer to a newly allocated NULL-terminated array of * allocated C strings is written to @a out_strv. The caller must g_free() * each string and the array itself. * * @param[in] py_strseq The sequence object. * @param[out] out_strv Address of string vector to be filled in. * * @return SRD_OK upon success, a (

 * @private
 */
SRD_PRIV int py_strseq_to_char(PyObject *py_strseq, char ***out_strv)
{
	PyObject *py_item, *py_bytes;
	char **strv, *str;
	ssize_t seq_len, i;
	PyGILState_STATE gstate;
	int ret = SRD_ERR_PYTHON;
	int lv = 0;
	char dec_buf[15];

	gstate = PyGILState_Ensure();

    str = NULL;
    strv = NULL;
	if (!PySequence_Check(py_strseq)) {
		srd_err("Object does not provide sequence protocol.");
		goto err;
	}

	seq_len = PySequence_Size(py_strseq);
	if (seq_len < 0) {
        srd_exception_catch(NULL, "Failed to obtain sequence size");
		goto err;
	}

	strv = g_try_new0(char *, seq_len + 1);
	if (!strv) {
		srd_err("Failed to allocate result string vector.");
		ret = SRD_ERR_MALLOC;
		goto err;
	}

	for (i = 0; i < seq_len; i++) {
		py_item = PySequence_GetItem(py_strseq, i);
		if (!py_item)
			goto err;

		if (PyUnicode_Check(py_item))
		{
			py_bytes = PyUnicode_AsUTF8String(py_item);
			Py_DECREF(py_item);
			if (!py_bytes)
				goto err;

			str = g_strdup(PyBytes_AsString(py_bytes));
			Py_DECREF(py_bytes);
			if (!str)
				goto err;
		}
		else if (PyLong_Check(py_item))
		{
			lv = PyLong_AsLong(py_item);
			sprintf(dec_buf, "%d", lv);
			str = g_strdup(dec_buf);
		}
		else{
			Py_DECREF(py_item);
			goto err;