diff options
Diffstat (limited to 'src/core/file_sys/vfs_libzip.cpp')
-rw-r--r-- | src/core/file_sys/vfs_libzip.cpp | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/core/file_sys/vfs_libzip.cpp b/src/core/file_sys/vfs_libzip.cpp new file mode 100644 index 000000000..8bdaa7e4a --- /dev/null +++ b/src/core/file_sys/vfs_libzip.cpp @@ -0,0 +1,79 @@ +// 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_close)> src{ + zip_source_buffer_create(data.data(), data.size(), 0, &error), zip_source_close}; + if (src == nullptr) + return nullptr; + + std::unique_ptr<zip_t, decltype(&zip_close)> zip{zip_open_from_source(src.get(), 0, &error), + zip_close}; + 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 |