* This file is part of the sigrok project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
- * Copyright (C) 2011 Bert Vermeulen <bert@biot.com>
+ * Copyright (C) 2012 Bert Vermeulen <bert@biot.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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include "sigrokdecode.h" /* First, so we avoid a _POSIX_C_SOURCE warning. */
+#include "sigrokdecode-internal.h"
#include "config.h"
-#include <sigrokdecode.h> /* First, so we avoid a _POSIX_C_SOURCE warning. */
/**
- * Helper function to get the value of a python object's attribute,
- * returned as a newly allocated char *.
+ * Get the value of a python object's attribute, returned as a newly
+ * allocated char *.
*
* @param py_obj The object to probe.
- * @param key Name of the attribute to retrieve.
+ * @param attr Name of the attribute to retrieve.
* @param outstr ptr to char * storage to be filled in.
*
* @return SRD_OK upon success, a (negative) error code otherwise.
* The 'outstr' argument points to a malloc()ed string upon success.
*/
-int h_str(PyObject *py_obj, const char *key, char **outstr)
+int py_attr_as_str(PyObject *py_obj, const char *attr, char **outstr)
{
- PyObject *py_str, *py_encstr;
- char *str;
+ PyObject *py_str;
+ int ret;
+
+ if (!PyObject_HasAttrString(py_obj, attr)) {
+ srd_dbg("srd: %s object has no attribute '%s'.",
+ Py_TYPE(py_obj)->tp_name, attr);
+ return SRD_ERR_PYTHON;
+ }
+
+ if (!(py_str = PyObject_GetAttrString(py_obj, attr))) {
+ /* TODO: report exception message/traceback to err/dbg */
+ PyErr_Clear();
+ return SRD_ERR_PYTHON;
+ }
+
+ if (!PyUnicode_Check(py_str)) {
+ srd_dbg("srd: %s attribute should be a string, but is a %s.",
+ attr, Py_TYPE(py_str)->tp_name);
+ Py_DecRef(py_str);
+ return SRD_ERR_PYTHON;
+ }
+
+ ret = py_str_as_str(py_str, outstr);
+ Py_DecRef(py_str);
+
+ return ret;
+}
+
+
+/**
+ * Get the value of a python dictionary item, returned as a newly
+ * allocated char *.
+ *
+ * @param py_obj The dictionary to probe.
+ * @param attr Key of the item to retrieve.
+ * @param outstr ptr to char * storage to be filled in.
+ *
+ * @return SRD_OK upon success, a (negative) error code otherwise.
+ * The 'outstr' argument points to a malloc()ed string upon success.
+ */
+int py_dictitem_as_str(PyObject *py_obj, const char *key, char **outstr)
+{
+ PyObject *py_value;
+ int ret;
+
+ if (!PyDict_Check(py_obj)) {
+ srd_dbg("srd: Object is a %s, not a dictionary.", Py_TYPE(py_obj)->tp_name);
+ return SRD_ERR_PYTHON;
+ }
+
+ if (!(py_value = PyDict_GetItemString(py_obj, key))) {
+ srd_dbg("srd: Dictionary has no attribute '%s'.", key);
+ return SRD_ERR_PYTHON;
+ }
+
+ if (!PyUnicode_Check(py_value)) {
+ srd_dbg("srd: Dictionary value for %s should be a string, but is a %s.",
+ key, Py_TYPE(py_value)->tp_name);
+ return SRD_ERR_PYTHON;
+ }
+
+ ret = py_str_as_str(py_value, outstr);
+
+ return SRD_OK;
+}
+
+
+/**
+ * Get the value of a python unicode string object, returned as a newly
+ * allocated char *.
+ *
+ * @param py_str The unicode string object.
+ * @param outstr ptr to char * storage to be filled in.
+ *
+ * @return SRD_OK upon success, a (negative) error code otherwise.
+ * The 'outstr' argument points to a malloc()ed string upon success.
+ */
+int py_str_as_str(PyObject *py_str, char **outstr)
+{
+ PyObject *py_encstr;
int ret;
+ char *str;
- py_str = py_encstr = NULL;
+ py_encstr = NULL;
str = NULL;
ret = SRD_OK;
- if (!(py_str = PyObject_GetAttrString(py_obj, (char *)key))) {
- /* TODO: log level 4 debug message */
+ if (!PyUnicode_Check(py_str)) {
+ srd_dbg("srd: object is a %s, not a string object", Py_TYPE(py_str)->tp_name);
ret = SRD_ERR_PYTHON;
goto err_out;
}
if (!(py_encstr = PyUnicode_AsEncodedString(py_str, "utf-8", NULL))) {
- /* TODO: log level 4 debug message */
ret = SRD_ERR_PYTHON;
goto err_out;
}
if (!(str = PyBytes_AS_STRING(py_encstr))) {
- /* TODO: log level 4 debug message */
ret = SRD_ERR_PYTHON;
goto err_out;
}
if (!(*outstr = g_strdup(str))) {
- /* TODO: log level 4 debug message */
+ srd_dbg("srd: malloc failed");
ret = SRD_ERR_MALLOC;
goto err_out;
}
err_out:
- if (py_str)
- Py_XDECREF(py_str);
if (py_encstr)
Py_XDECREF(py_encstr);
- if (PyErr_Occurred())
- PyErr_Print();
+ if (PyErr_Occurred()) {
+ srd_dbg("srd: string conversion failed");
+ /* TODO: dump exception to srd_dbg */
+ PyErr_Clear();
+ }
return ret;
}
+
+/**
+ * Convert a python list of unicode strings to a NULL-terminated UTF8-encoded
+ * char * array. The caller must free each string when finished.
+ *
+ * @param py_strlist The list object.
+ * @param outstr ptr to char ** storage to be filled in.
+ *
+ * @return SRD_OK upon success, a (negative) error code otherwise.
+ * The 'outstr' argument points to a malloc()ed char ** upon success.
+ */
+int py_strlist_to_char(PyObject *py_strlist, char ***outstr)
+{
+ PyObject *py_str;
+ int list_len, i;
+ char **out, *str;
+
+ list_len = PyList_Size(py_strlist);
+ if (!(out = g_try_malloc(sizeof(char *) * (list_len + 1))))
+ return SRD_ERR_MALLOC;
+ for (i = 0; i < list_len; i++) {
+ if (!(py_str = PyUnicode_AsEncodedString(
+ PyList_GetItem(py_strlist, i), "utf-8", NULL)))
+ return SRD_ERR_PYTHON;
+ if (!(str = PyBytes_AS_STRING(py_str)))
+ return SRD_ERR_PYTHON;
+ out[i] = g_strdup(str);
+ }
+ out[i] = NULL;
+ *outstr = out;
+
+ return SRD_OK;
+}
+
projects / libsigrokdecode.git / blobdiff