chromium/third_party/mediapipe/src/mediapipe/tasks/cc/metadata/utils/zip_utils.cc

/* Copyright 2022 The MediaPipe Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/

#include "mediapipe/tasks/cc/metadata/utils/zip_utils.h"

#include <string>

#include "absl/cleanup/cleanup.h"
#include "absl/container/flat_hash_map.h"
#include "absl/log/absl_log.h"
#include "absl/status/status.h"
#include "absl/status/statusor.h"
#include "contrib/minizip/ioapi.h"
#include "contrib/minizip/unzip.h"
#include "mediapipe/framework/port/status_macros.h"
#include "mediapipe/tasks/cc/common.h"
#include "mediapipe/tasks/cc/metadata/utils/zip_readonly_mem_file.h"

namespace mediapipe {
namespace tasks {
namespace metadata {

namespace {

StatusCode;

// Wrapper function around calls to unzip to avoid repeating conversion logic
// from error code to Status.
absl::Status UnzipErrorToStatus(int error) { … }

// Stores a file name, position in zip buffer and size.
struct ZipFileInfo { … };

// Returns the ZipFileInfo corresponding to the current file in the provided
// unzFile object.
absl::StatusOr<ZipFileInfo> GetCurrentZipFileInfo(const unzFile& zf) { … }

}  // namespace

absl::Status ExtractFilesfromZipFile(
    const char* buffer_data, const size_t buffer_size,
    absl::flat_hash_map<std::string, absl::string_view>* files) { … }

void SetExternalFile(const absl::string_view& file_content,
                     core::proto::ExternalFile* model_file, bool is_copy) { … }

}  // namespace metadata
}  // namespace tasks
}  // namespace mediapipe