mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-11-10 15:16:34 +00:00
81 lines
2.9 KiB
C++
81 lines
2.9 KiB
C++
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/*
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* Copyright (c) 2019-2020 Adubbz, 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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#include "ncm_fs_utils.hpp"
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namespace ams::ncm {
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namespace {
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using FilePathString = kvdb::BoundedString<64>;
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bool IsContentMetaFileName(const char *name) {
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return impl::PathView(name).HasSuffix(".cnmt");
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}
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}
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Result ReadContentMetaPath(AutoBuffer *out, const char *path) {
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/* Mount the content. */
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auto mount_name = impl::CreateUniqueMountName();
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R_TRY(fs::MountContent(mount_name.str, path, fs::ContentType_Meta));
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ON_SCOPE_EXIT { fs::Unmount(mount_name.str); };
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/* Open the root directory. */
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auto root_path = impl::GetRootDirectoryPath(mount_name);
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fs::DirectoryHandle dir;
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R_TRY(fs::OpenDirectory(std::addressof(dir), root_path.str, fs::OpenDirectoryMode_File));
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ON_SCOPE_EXIT { fs::CloseDirectory(dir); };
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/* Loop directory reading until we find the entry we're looking for. */
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while (true) {
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/* Read one entry, and finish when we fail to read. */
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fs::DirectoryEntry entry;
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s64 num_read;
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R_TRY(fs::ReadDirectory(std::addressof(num_read), std::addressof(entry), dir, 1));
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if (num_read == 0) {
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break;
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}
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/* If this is the content meta file, parse it. */
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if (IsContentMetaFileName(entry.name)) {
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/* Create the file path. */
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FilePathString file_path(root_path.str);
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file_path.Append(entry.name);
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/* Open the content meta file. */
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fs::FileHandle file;
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R_TRY(fs::OpenFile(std::addressof(file), file_path, fs::OpenMode_Read));
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ON_SCOPE_EXIT { fs::CloseFile(file); };
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/* Get the meta size. */
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s64 file_size;
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R_TRY(fs::GetFileSize(std::addressof(file_size), file));
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const size_t meta_size = static_cast<size_t>(file_size);
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/* Create a buffer for the meta. */
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R_TRY(out->Initialize(meta_size));
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/* Read the meta into the buffer. */
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return fs::ReadFile(file, 0, out->Get(), meta_size);
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}
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}
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return ncm::ResultContentMetaNotFound();
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}
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}
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