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// Copyright 2019 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <string>
#include <zip.h>
#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();
std::unique_ptr<zip_source_t, decltype(&zip_source_free)> src{
zip_source_buffer_create(data.data(), data.size(), 0, &error), zip_source_free};
if (src == nullptr)
return nullptr;
std::unique_ptr<zip_t, decltype(&zip_discard)> zip{zip_open_from_source(src.get(), 0, &error),
zip_discard};
if (zip == nullptr)
return nullptr;
std::shared_ptr<VectorVfsDirectory> out = std::make_shared<VectorVfsDirectory>();
const auto num_entries = zip_get_num_entries(zip.get(), 0);
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.get(), i, 0, &stat);
if (stat_res == -1)
return nullptr;
const std::string name(stat.name);
if (name.empty())
continue;
if (name.back() != '/') {
std::unique_ptr<zip_file_t, decltype(&zip_fclose)> file{
zip_fopen_index(zip.get(), i, 0), zip_fclose};
std::vector<u8> buf(stat.size);
if (zip_fread(file.get(), buf.data(), buf.size()) != buf.size())
return nullptr;
const auto parts = FileUtil::SplitPathComponents(stat.name);
const auto new_file = std::make_shared<VectorVfsFile>(buf, parts.back());
std::shared_ptr<VectorVfsDirectory> 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<VectorVfsDirectory>(
std::vector<VirtualFile>{}, std::vector<VirtualDir>{}, parts[j]);
dtrv->AddDirectory(temp);
dtrv = temp;
} else {
dtrv = std::dynamic_pointer_cast<VectorVfsDirectory>(subdir);
}
}
if (dtrv == nullptr)
return nullptr;
dtrv->AddFile(new_file);
}
}
return out;
}
} // namespace FileSys
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