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80 lines
2.6 KiB
C++
80 lines
2.6 KiB
C++
// Copyright 2019 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <string>
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#include <zip.h>
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#include "common/logging/backend.h"
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#include "core/file_sys/vfs.h"
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#include "core/file_sys/vfs_libzip.h"
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#include "core/file_sys/vfs_vector.h"
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namespace FileSys {
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VirtualDir ExtractZIP(VirtualFile file) {
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zip_error_t error{};
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const auto data = file->ReadAllBytes();
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std::unique_ptr<zip_source_t, decltype(&zip_source_close)> src{
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zip_source_buffer_create(data.data(), data.size(), 0, &error), zip_source_close};
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if (src == nullptr)
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return nullptr;
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std::unique_ptr<zip_t, decltype(&zip_close)> zip{zip_open_from_source(src.get(), 0, &error),
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zip_close};
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if (zip == nullptr)
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return nullptr;
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std::shared_ptr<VectorVfsDirectory> out = std::make_shared<VectorVfsDirectory>();
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const auto num_entries = zip_get_num_entries(zip.get(), 0);
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zip_stat_t stat{};
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zip_stat_init(&stat);
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for (std::size_t i = 0; i < num_entries; ++i) {
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const auto stat_res = zip_stat_index(zip.get(), i, 0, &stat);
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if (stat_res == -1)
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return nullptr;
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const std::string name(stat.name);
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if (name.empty())
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continue;
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if (name.back() != '/') {
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std::unique_ptr<zip_file_t, decltype(&zip_fclose)> file{
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zip_fopen_index(zip.get(), i, 0), zip_fclose};
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std::vector<u8> buf(stat.size);
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if (zip_fread(file.get(), buf.data(), buf.size()) != buf.size())
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return nullptr;
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const auto parts = FileUtil::SplitPathComponents(stat.name);
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const auto new_file = std::make_shared<VectorVfsFile>(buf, parts.back());
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std::shared_ptr<VectorVfsDirectory> dtrv = out;
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for (std::size_t j = 0; j < parts.size() - 1; ++j) {
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if (dtrv == nullptr)
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return nullptr;
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const auto subdir = dtrv->GetSubdirectory(parts[j]);
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if (subdir == nullptr) {
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const auto temp = std::make_shared<VectorVfsDirectory>(
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std::vector<VirtualFile>{}, std::vector<VirtualDir>{}, parts[j]);
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dtrv->AddDirectory(temp);
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dtrv = temp;
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} else {
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dtrv = std::dynamic_pointer_cast<VectorVfsDirectory>(subdir);
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}
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}
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if (dtrv == nullptr)
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return nullptr;
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dtrv->AddFile(new_file);
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}
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}
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return out;
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}
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} // namespace FileSys
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