mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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82 lines
3.4 KiB
C++
82 lines
3.4 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stratosphere.hpp>
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namespace ams::fssystem {
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SubDirectoryFileSystem::SubDirectoryFileSystem(std::shared_ptr<fs::fsa::IFileSystem> fs, const char *bp, bool unc)
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: PathResolutionFileSystem(fs, unc)
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{
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this->base_path = nullptr;
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R_ABORT_UNLESS(this->Initialize(bp));
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}
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SubDirectoryFileSystem::SubDirectoryFileSystem(std::unique_ptr<fs::fsa::IFileSystem> fs, const char *bp, bool unc)
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: PathResolutionFileSystem(std::move(fs), unc)
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{
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this->base_path = nullptr;
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R_ABORT_UNLESS(this->Initialize(bp));
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}
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SubDirectoryFileSystem::~SubDirectoryFileSystem() {
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if (this->base_path != nullptr) {
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fs::impl::Deallocate(this->base_path, this->base_path_len);
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}
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}
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Result SubDirectoryFileSystem::Initialize(const char *bp) {
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/* Make sure the path isn't too long. */
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R_UNLESS(strnlen(bp, fs::EntryNameLengthMax + 1) <= fs::EntryNameLengthMax, fs::ResultTooLongPath());
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/* Normalize the path. */
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char normalized_path[fs::EntryNameLengthMax + 2];
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size_t normalized_path_len;
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R_TRY(fs::PathNormalizer::Normalize(normalized_path, std::addressof(normalized_path_len), bp, sizeof(normalized_path), this->IsUncPreserved()));
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/* Ensure terminating '/' */
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if (!fs::PathNormalizer::IsSeparator(normalized_path[normalized_path_len - 1])) {
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AMS_ASSERT(normalized_path_len + 2 < sizeof(normalized_path));
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normalized_path[normalized_path_len] = fs::StringTraits::DirectorySeparator;
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normalized_path[normalized_path_len + 1] = fs::StringTraits::NullTerminator;
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++normalized_path_len;
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}
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/* Allocate new path. */
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this->base_path_len = normalized_path_len + 1;
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this->base_path = static_cast<char *>(fs::impl::Allocate(this->base_path_len));
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R_UNLESS(this->base_path != nullptr, fs::ResultAllocationFailureInSubDirectoryFileSystem());
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/* Copy path in. */
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std::memcpy(this->base_path, normalized_path, normalized_path_len);
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this->base_path[normalized_path_len] = fs::StringTraits::NullTerminator;
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return ResultSuccess();
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}
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Result SubDirectoryFileSystem::ResolveFullPath(char *out, size_t out_size, const char *relative_path) {
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/* Ensure path will fit. */
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R_UNLESS(this->base_path_len + strnlen(relative_path, fs::EntryNameLengthMax + 1) <= out_size, fs::ResultTooLongPath());
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/* Copy base path. */
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std::memcpy(out, this->base_path, this->base_path_len);
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/* Normalize it. */
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const size_t prefix_size = this->base_path_len - 2;
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size_t normalized_len;
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return fs::PathNormalizer::Normalize(out + prefix_size, std::addressof(normalized_len), relative_path, out_size - prefix_size, this->IsUncPreserved(), false);
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}
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}
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