| /* |
| * This file is part of the libsigrokdecode project. |
| * |
| * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de> |
| * 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 |
| * the Free Software Foundation, either version 3 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, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "libsigrokdecode-internal.h" /* First, so we avoid a _POSIX_C_SOURCE warning. */ |
| #include "libsigrokdecode.h" |
| #include "config.h" |
| |
| /** |
| * Get the value of a Python object's attribute, returned as a newly |
| * allocated char *. |
| * |
| * @param py_obj The object to probe. |
| * @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. |
| * |
| * @private |
| */ |
| SRD_PRIV int py_attr_as_str(const PyObject *py_obj, const char *attr, |
| char **outstr) |
| { |
| PyObject *py_str; |
| int ret; |
| |
| if (!PyObject_HasAttrString((PyObject *)py_obj, attr)) { |
| srd_dbg("%s object has no attribute '%s'.", |
| Py_TYPE(py_obj)->tp_name, attr); |
| return SRD_ERR_PYTHON; |
| } |
| |
| if (!(py_str = PyObject_GetAttrString((PyObject *)py_obj, attr))) { |
| srd_exception_catch(""); |
| return SRD_ERR_PYTHON; |
| } |
| |
| if (!PyUnicode_Check(py_str)) { |
| srd_dbg("%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 key Key of the item to retrieve. |
| * @param outstr Pointer 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. |
| * |
| * @private |
| */ |
| SRD_PRIV int py_dictitem_as_str(const PyObject *py_obj, const char *key, |
| char **outstr) |
| { |
| PyObject *py_value; |
| int ret; |
| |
| if (!PyDict_Check((PyObject *)py_obj)) { |
| srd_dbg("Object is a %s, not a dictionary.", |
| Py_TYPE((PyObject *)py_obj)->tp_name); |
| return SRD_ERR_PYTHON; |
| } |
| |
| if (!(py_value = PyDict_GetItemString((PyObject *)py_obj, key))) { |
| srd_dbg("Dictionary has no attribute '%s'.", key); |
| return SRD_ERR_PYTHON; |
| } |
| |
| if (!PyUnicode_Check(py_value)) { |
| srd_dbg("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 ret; |
| } |
| |
| /** |
| * 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. |
| * |
| * @private |
| */ |
| SRD_PRIV int py_str_as_str(const PyObject *py_str, char **outstr) |
| { |
| PyObject *py_encstr; |
| int ret; |
| char *str; |
| |
| py_encstr = NULL; |
| str = NULL; |
| ret = SRD_OK; |
| |
| if (!PyUnicode_Check((PyObject *)py_str)) { |
| srd_dbg("Object is a %s, not a string object.", |
| Py_TYPE((PyObject *)py_str)->tp_name); |
| ret = SRD_ERR_PYTHON; |
| goto err_out; |
| } |
| |
| if (!(py_encstr = PyUnicode_AsEncodedString((PyObject *)py_str, |
| "utf-8", NULL))) { |
| ret = SRD_ERR_PYTHON; |
| goto err_out; |
| } |
| if (!(str = PyBytes_AS_STRING(py_encstr))) { |
| ret = SRD_ERR_PYTHON; |
| goto err_out; |
| } |
| |
| if (!(*outstr = g_strdup(str))) { |
| srd_dbg("Failed to g_malloc() outstr."); |
| ret = SRD_ERR_MALLOC; |
| goto err_out; |
| } |
| |
| err_out: |
| if (py_encstr) |
| Py_XDECREF(py_encstr); |
| |
| if (PyErr_Occurred()) { |
| srd_exception_catch("string conversion failed"); |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * Convert a Python list of unicode strings to a NULL-terminated UTF8-encoded |
| * char * array. The caller must g_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 g_malloc()ed char** upon success. |
| * |
| * @private |
| */ |
| SRD_PRIV int py_strseq_to_char(const PyObject *py_strseq, char ***outstr) |
| { |
| PyObject *py_str; |
| int list_len, i; |
| char **out, *str; |
| |
| list_len = PySequence_Size((PyObject *)py_strseq); |
| if (!(out = g_try_malloc(sizeof(char *) * (list_len + 1)))) { |
| srd_err("Failed to g_malloc() 'out'."); |
| return SRD_ERR_MALLOC; |
| } |
| for (i = 0; i < list_len; i++) { |
| if (!(py_str = PyUnicode_AsEncodedString( |
| PySequence_GetItem((PyObject *)py_strseq, 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; |
| } |