1 /* 2 * Copyright (c) 2009-2021, Google LLC 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * * Neither the name of Google LLC nor the 13 * names of its contributors may be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL Google LLC BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef PYUPB_PYTHON_H__ 29 #define PYUPB_PYTHON_H__ 30 31 // We restrict ourselves to the limited API, so that a single build can be 32 // ABI-compatible with a wide range of Python versions. 33 // 34 // The build system will define Py_LIMITED_API as appropriate (see BUILD). We 35 // only want to define it for our distribution packages, since we can do some 36 // extra assertions when Py_LIMITED_API is not defined. Also Py_LIMITED_API is 37 // incompatible with Py_DEBUG. 38 39 // #define Py_LIMITED_API <val> // Defined by build system when appropriate. 40 41 #include "Python.h" 42 43 // Ideally we could restrict ourselves to the limited API of 3.7, but this is 44 // a very important function that was not officially added to the limited API 45 // until 3.10. Without this function, there is no way of getting data from a 46 // Python `str` object without a copy. 47 // 48 // While this function was not *officially* added to the limited API until 49 // Python 3.10, In practice it has been stable since Python 3.1. 50 // https://bugs.python.org/issue41784 51 // 52 // On Linux/ELF and macOS/Mach-O, we can get away with using this function with 53 // the limited API prior to 3.10. 54 55 #if (defined(__linux__) || defined(__APPLE__)) && defined(Py_LIMITED_API) && \ 56 Py_LIMITED_API < 0x03100000 57 PyAPI_FUNC(const char*) 58 PyUnicode_AsUTF8AndSize(PyObject* unicode, Py_ssize_t* size); 59 #endif 60 61 #endif // PYUPB_PYTHON_H__ 62