From c00ed8f4ffc4e6fca6337aecaa1acd390c71a584 Mon Sep 17 00:00:00 2001 From: Zach Hilman Date: Sun, 28 Apr 2019 18:42:05 -0400 Subject: [PATCH] vfs: Add function to extract ZIP file into virtual filesystem --- src/core/file_sys/vfs_libzip.cpp | 83 ++++++++++++++++++++++++++++++++ src/core/file_sys/vfs_libzip.h | 13 +++++ 2 files changed, 96 insertions(+) create mode 100644 src/core/file_sys/vfs_libzip.cpp create mode 100644 src/core/file_sys/vfs_libzip.h diff --git a/src/core/file_sys/vfs_libzip.cpp b/src/core/file_sys/vfs_libzip.cpp new file mode 100644 index 000000000..64f19a0ea --- /dev/null +++ b/src/core/file_sys/vfs_libzip.cpp @@ -0,0 +1,83 @@ +// Copyright 2019 yuzu emulator team +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include +#include +#include "common/logging/backend.h" +#include "core/file_sys/vfs.h" +#include "core/file_sys/vfs_libzip.h" +#include "core/file_sys/vfs_vector.h" + +namespace FileSys { + +VirtualDir ExtractZIP(VirtualFile file) { + zip_error_t error{}; + + const auto data = file->ReadAllBytes(); + const auto src = zip_source_buffer_create(data.data(), data.size(), 0, &error); + if (src == nullptr) + return nullptr; + + const auto zip = zip_open_from_source(src, 0, &error); + if (zip == nullptr) + return nullptr; + + std::shared_ptr out = std::make_shared(); + + const auto num_entries = zip_get_num_entries(zip, 0); + if (num_entries == -1) + return nullptr; + + zip_stat_t stat{}; + zip_stat_init(&stat); + + for (std::size_t i = 0; i < num_entries; ++i) { + const auto stat_res = zip_stat_index(zip, i, 0, &stat); + if (stat_res == -1) + return nullptr; + + const std::string name(stat.name); + if (name.empty()) + continue; + + if (name[name.size() - 1] != '/') { + const auto file = zip_fopen_index(zip, i, 0); + + std::vector buf(stat.size); + if (zip_fread(file, buf.data(), buf.size()) != buf.size()) + return nullptr; + + zip_fclose(file); + + const auto parts = FileUtil::SplitPathComponents(stat.name); + const auto new_file = std::make_shared(buf, parts.back()); + + std::shared_ptr dtrv = out; + for (std::size_t j = 0; j < parts.size() - 1; ++j) { + if (dtrv == nullptr) + return nullptr; + const auto subdir = dtrv->GetSubdirectory(parts[j]); + if (subdir == nullptr) { + const auto temp = std::make_shared( + std::vector{}, std::vector{}, parts[j]); + dtrv->AddDirectory(temp); + dtrv = temp; + } else { + dtrv = std::dynamic_pointer_cast(subdir); + } + } + + if (dtrv == nullptr) + return nullptr; + dtrv->AddFile(new_file); + } + } + + zip_source_close(src); + zip_close(zip); + + return out; +} + +} // namespace FileSys diff --git a/src/core/file_sys/vfs_libzip.h b/src/core/file_sys/vfs_libzip.h new file mode 100644 index 000000000..f68af576a --- /dev/null +++ b/src/core/file_sys/vfs_libzip.h @@ -0,0 +1,13 @@ +// Copyright 2019 yuzu emulator team +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include "core/file_sys/vfs_types.h" + +namespace FileSys { + +VirtualDir ExtractZIP(VirtualFile zip); + +} // namespace FileSys