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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de> | |
5 | * Copyright (C) 2011 Bert Vermeulen <bert@biot.com> | |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation, either version 3 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #include "sigrokdecode.h" /* First, so we avoid a _POSIX_C_SOURCE warning. */ | |
22 | #include "sigrokdecode-internal.h" | |
23 | #include "config.h" | |
24 | ||
25 | ||
26 | /** | |
27 | * Get the value of a python object's attribute, returned as a newly | |
28 | * allocated char *. | |
29 | * | |
30 | * @param py_obj The object to probe. | |
31 | * @param attr Name of the attribute to retrieve. | |
32 | * @param outstr ptr to char * storage to be filled in. | |
33 | * | |
34 | * @return SRD_OK upon success, a (negative) error code otherwise. | |
35 | * The 'outstr' argument points to a malloc()ed string upon success. | |
36 | */ | |
37 | int py_attr_as_str(PyObject *py_obj, const char *attr, char **outstr) | |
38 | { | |
39 | PyObject *py_str; | |
40 | int ret; | |
41 | ||
42 | if (!PyObject_HasAttrString(py_obj, attr)) { | |
43 | srd_dbg("object has no attribute '%s'", attr); | |
44 | return SRD_ERR_PYTHON; | |
45 | } | |
46 | ||
47 | if (!(py_str = PyObject_GetAttrString(py_obj, attr))) { | |
48 | /* TODO: report exception message/traceback to err/dbg */ | |
49 | PyErr_Clear(); | |
50 | return SRD_ERR_PYTHON; | |
51 | } | |
52 | ||
53 | ret = py_str_as_str(py_str, outstr); | |
54 | Py_XDECREF(py_str); | |
55 | ||
56 | return ret; | |
57 | } | |
58 | ||
59 | ||
60 | /** | |
61 | * Get the value of a python unicode string object, returned as a newly | |
62 | * allocated char *. | |
63 | * | |
64 | * @param py_str The unicode string object. | |
65 | * @param outstr ptr to char * storage to be filled in. | |
66 | * | |
67 | * @return SRD_OK upon success, a (negative) error code otherwise. | |
68 | * The 'outstr' argument points to a malloc()ed string upon success. | |
69 | */ | |
70 | int py_str_as_str(PyObject *py_str, char **outstr) | |
71 | { | |
72 | PyObject *py_encstr; | |
73 | int ret; | |
74 | char *str; | |
75 | ||
76 | py_encstr = NULL; | |
77 | str = NULL; | |
78 | ret = SRD_OK; | |
79 | ||
80 | if (!PyUnicode_Check(py_str)) { | |
81 | srd_dbg("not a string object"); | |
82 | ret = SRD_ERR_PYTHON; | |
83 | goto err_out; | |
84 | } | |
85 | ||
86 | if (!(py_encstr = PyUnicode_AsEncodedString(py_str, "utf-8", NULL))) { | |
87 | ret = SRD_ERR_PYTHON; | |
88 | goto err_out; | |
89 | } | |
90 | if (!(str = PyBytes_AS_STRING(py_encstr))) { | |
91 | ret = SRD_ERR_PYTHON; | |
92 | goto err_out; | |
93 | } | |
94 | ||
95 | if (!(*outstr = g_strdup(str))) { | |
96 | srd_dbg("malloc failed"); | |
97 | ret = SRD_ERR_MALLOC; | |
98 | goto err_out; | |
99 | } | |
100 | ||
101 | err_out: | |
102 | if (py_str) | |
103 | Py_XDECREF(py_str); | |
104 | if (py_encstr) | |
105 | Py_XDECREF(py_encstr); | |
106 | ||
107 | if (PyErr_Occurred()) { | |
108 | srd_dbg("string conversion failed"); | |
109 | /* TODO: dump exception to srd_dbg */ | |
110 | PyErr_Clear(); | |
111 | } | |
112 | ||
113 | return ret; | |
114 | } | |
115 | ||
116 | ||
117 | /** | |
118 | * Convert a python list of unicode strings to a NULL-terminated UTF8-encoded | |
119 | * char * array. The caller must free each string when finished. | |
120 | * | |
121 | * @param py_strlist The list object. | |
122 | * @param outstr ptr to char ** storage to be filled in. | |
123 | * | |
124 | * @return SRD_OK upon success, a (negative) error code otherwise. | |
125 | * The 'outstr' argument points to a malloc()ed char ** upon success. | |
126 | */ | |
127 | int py_strlist_to_char(PyObject *py_strlist, char ***outstr) | |
128 | { | |
129 | PyObject *py_str; | |
130 | int list_len, i; | |
131 | char **out, *str; | |
132 | ||
133 | list_len = PyList_Size(py_strlist); | |
134 | if (!(out = g_try_malloc(sizeof(char *) * (list_len + 1)))) | |
135 | return SRD_ERR_MALLOC; | |
136 | for (i = 0; i < list_len; i++) { | |
137 | if (!(py_str = PyUnicode_AsEncodedString( | |
138 | PyList_GetItem(py_strlist, i), "utf-8", NULL))) | |
139 | return SRD_ERR_PYTHON; | |
140 | if (!(str = PyBytes_AS_STRING(py_str))) | |
141 | return SRD_ERR_PYTHON; | |
142 | out[i] = g_strdup(str); | |
143 | } | |
144 | out[i] = NULL; | |
145 | *outstr = out; | |
146 | ||
147 | return SRD_OK; | |
148 | } | |
149 |