mirror of
https://github.com/RYDE-WORK/pybind11.git
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522c59ceb2
* chore: drop Python 3.5 support * chore: more fstrings with flynt's help * ci: drop Python 3.5 * chore: bump dependency versions * docs: touch up py::args * tests: remove deprecation warning * Ban smartquotes * Very minor tweaks (by-product of reviewing PR #3719). Co-authored-by: Aaron Gokaslan <skylion.aaron@gmail.com> Co-authored-by: Ralf W. Grosse-Kunstleve <rwgk@google.com>
103 lines
3.4 KiB
C++
103 lines
3.4 KiB
C++
// Copyright (c) 2021 The Pybind Development Team.
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// All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#pragma once
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#include "../pybind11.h"
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#include "../detail/common.h"
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#include "../detail/descr.h"
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#include "../cast.h"
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#include "../pytypes.h"
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#include <string>
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#ifdef __has_include
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# if defined(PYBIND11_CPP17) && __has_include(<filesystem>)
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# include <filesystem>
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# define PYBIND11_HAS_FILESYSTEM 1
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# endif
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#endif
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#if !defined(PYBIND11_HAS_FILESYSTEM) && !defined(PYBIND11_HAS_FILESYSTEM_IS_OPTIONAL)
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# error \
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"#include <filesystem> is not available. (Use -DPYBIND11_HAS_FILESYSTEM_IS_OPTIONAL to ignore.)"
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#endif
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PYBIND11_NAMESPACE_BEGIN(PYBIND11_NAMESPACE)
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PYBIND11_NAMESPACE_BEGIN(detail)
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#if defined(PYBIND11_HAS_FILESYSTEM)
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template <typename T>
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struct path_caster {
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private:
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static PyObject *unicode_from_fs_native(const std::string &w) {
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# if !defined(PYPY_VERSION)
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return PyUnicode_DecodeFSDefaultAndSize(w.c_str(), ssize_t(w.size()));
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# else
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// PyPy mistakenly declares the first parameter as non-const.
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return PyUnicode_DecodeFSDefaultAndSize(const_cast<char *>(w.c_str()), ssize_t(w.size()));
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# endif
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}
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static PyObject *unicode_from_fs_native(const std::wstring &w) {
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return PyUnicode_FromWideChar(w.c_str(), ssize_t(w.size()));
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}
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public:
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static handle cast(const T &path, return_value_policy, handle) {
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if (auto py_str = unicode_from_fs_native(path.native())) {
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return module_::import("pathlib")
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.attr("Path")(reinterpret_steal<object>(py_str))
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.release();
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}
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return nullptr;
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}
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bool load(handle handle, bool) {
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// PyUnicode_FSConverter and PyUnicode_FSDecoder normally take care of
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// calling PyOS_FSPath themselves, but that's broken on PyPy (PyPy
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// issue #3168) so we do it ourselves instead.
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PyObject *buf = PyOS_FSPath(handle.ptr());
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if (!buf) {
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PyErr_Clear();
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return false;
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}
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PyObject *native = nullptr;
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if constexpr (std::is_same_v<typename T::value_type, char>) {
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if (PyUnicode_FSConverter(buf, &native) != 0) {
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if (auto *c_str = PyBytes_AsString(native)) {
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// AsString returns a pointer to the internal buffer, which
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// must not be free'd.
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value = c_str;
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}
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}
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} else if constexpr (std::is_same_v<typename T::value_type, wchar_t>) {
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if (PyUnicode_FSDecoder(buf, &native) != 0) {
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if (auto *c_str = PyUnicode_AsWideCharString(native, nullptr)) {
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// AsWideCharString returns a new string that must be free'd.
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value = c_str; // Copies the string.
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PyMem_Free(c_str);
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}
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}
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}
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Py_XDECREF(native);
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Py_DECREF(buf);
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if (PyErr_Occurred()) {
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PyErr_Clear();
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return false;
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}
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return true;
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}
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PYBIND11_TYPE_CASTER(T, const_name("os.PathLike"));
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};
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template <>
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struct type_caster<std::filesystem::path> : public path_caster<std::filesystem::path> {};
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#endif // PYBIND11_HAS_FILESYSTEM
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PYBIND11_NAMESPACE_END(detail)
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PYBIND11_NAMESPACE_END(PYBIND11_NAMESPACE)
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