1 /* General utility routines for GDB/Python.
3 Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
22 #include "python-internal.h"
25 /* This is a cleanup function which decrements the refcount on a
32 /* Note that we need the extra braces in this 'if' to avoid a
40 /* Return a new cleanup which will decrement the Python object's
44 make_cleanup_py_decref (PyObject *py)
46 return make_cleanup (py_decref, (void *) py);
49 /* Converts a Python 8-bit string to a unicode string object. Assumes the
50 8-bit string is in the host charset. If an error occurs during conversion,
51 returns NULL with a python exception set.
53 As an added bonus, the functions accepts a unicode string and returns it
54 right away, so callers don't need to check which kind of string they've
57 If the given object is not one of the mentioned string types, NULL is
58 returned, with the TypeError python exception set. */
60 python_string_to_unicode (PyObject *obj)
62 PyObject *unicode_str;
64 /* If obj is already a unicode string, just return it.
65 I wish life was always that simple... */
66 if (PyUnicode_Check (obj))
72 else if (PyString_Check (obj))
73 unicode_str = PyUnicode_FromEncodedObject (obj, host_charset (), NULL);
76 PyErr_SetString (PyExc_TypeError,
77 _("Expected a string or unicode object."));
84 /* Returns a newly allocated string with the contents of the given unicode
85 string object converted to CHARSET. If an error occurs during the
86 conversion, NULL will be returned and a python exception will be set.
88 The caller is responsible for xfree'ing the string. */
90 unicode_to_encoded_string (PyObject *unicode_str, const char *charset)
95 /* Translate string to named charset. */
96 string = PyUnicode_AsEncodedString (unicode_str, charset, NULL);
100 result = xstrdup (PyString_AsString (string));
107 /* Returns a PyObject with the contents of the given unicode string
108 object converted to a named charset. If an error occurs during
109 the conversion, NULL will be returned and a python exception will
112 unicode_to_encoded_python_string (PyObject *unicode_str, const char *charset)
116 /* Translate string to named charset. */
117 string = PyUnicode_AsEncodedString (unicode_str, charset, NULL);
124 /* Returns a newly allocated string with the contents of the given unicode
125 string object converted to the target's charset. If an error occurs during
126 the conversion, NULL will be returned and a python exception will be set.
128 The caller is responsible for xfree'ing the string. */
130 unicode_to_target_string (PyObject *unicode_str)
132 return unicode_to_encoded_string (unicode_str,
133 target_charset (python_gdbarch));
136 /* Returns a PyObject with the contents of the given unicode string
137 object converted to the target's charset. If an error occurs
138 during the conversion, NULL will be returned and a python exception
141 unicode_to_target_python_string (PyObject *unicode_str)
143 return unicode_to_encoded_python_string (unicode_str,
144 target_charset (python_gdbarch));
147 /* Converts a python string (8-bit or unicode) to a target string in
148 the target's charset. Returns NULL on error, with a python exception set.
150 The caller is responsible for xfree'ing the string. */
152 python_string_to_target_string (PyObject *obj)
157 str = python_string_to_unicode (obj);
161 result = unicode_to_target_string (str);
166 /* Converts a python string (8-bit or unicode) to a target string in the
167 target's charset. Returns NULL on error, with a python exception
170 python_string_to_target_python_string (PyObject *obj)
175 str = python_string_to_unicode (obj);
179 result = unicode_to_target_python_string (str);
184 /* Converts a python string (8-bit or unicode) to a target string in
185 the host's charset. Returns NULL on error, with a python exception set.
187 The caller is responsible for xfree'ing the string. */
189 python_string_to_host_string (PyObject *obj)
194 str = python_string_to_unicode (obj);
198 result = unicode_to_encoded_string (str, host_charset ());
203 /* Converts a target string of LENGTH bytes in the target's charset to a
204 Python Unicode string. If LENGTH is -1, convert until a null byte is found.
206 Returns NULL on error, with a python exception set. */
208 target_string_to_unicode (const gdb_byte *str, int length)
211 length = strlen (str);
213 return PyUnicode_Decode (str, length, target_charset (python_gdbarch), NULL);
216 /* Return true if OBJ is a Python string or unicode object, false
220 gdbpy_is_string (PyObject *obj)
222 return PyString_Check (obj) || PyUnicode_Check (obj);