sandboxed-api/sandboxed_api/util/path.h
Christian Blichmann dbaf95c724 Move utility code into sandboxed_api/util
This change should make it less confusing where utility code comes from.
Having it in two places made sense when we were debating whether to publish
Sandbox2 separately, but not any longer.

Follow-up changes will move `sandbox2/util.h` and rename the remaining
`sandbox2/util` folder.

PiperOrigin-RevId: 351601640
Change-Id: I6256845261f610e590c25e2c59851cc51da2d778
2021-01-13 09:25:52 -08:00

60 lines
2.1 KiB
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// Copyright 2019 Google LLC
//
// 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.
#ifndef SANDBOXED_API_SANDBOX2_UTIL_PATH_H_
#define SANDBOXED_API_SANDBOX2_UTIL_PATH_H_
#include <initializer_list>
#include <string>
#include <utility>
#include "absl/strings/string_view.h"
namespace sapi::file {
namespace internal {
// Not part of the public API.
std::string JoinPathImpl(std::initializer_list<absl::string_view> paths);
} // namespace internal
// Joins multiple paths together using the platform-specific path separator.
// Arguments must be convertible to absl::string_view.
template <typename... T>
inline std::string JoinPath(const T&... args) {
return internal::JoinPathImpl({args...});
}
// Return true if path is absolute.
bool IsAbsolutePath(absl::string_view path);
// Returns the parts of the path, split on the final "/". If there is no
// "/" in the path, the first part of the output is empty and the second
// is the input. If the only "/" in the path is the first character, it is
// the first part of the output.
std::pair<absl::string_view, absl::string_view> SplitPath(
absl::string_view path);
// Collapses duplicate "/"s, resolve ".." and "." path elements, removes
// trailing "/".
//
// NOTE: This respects relative vs. absolute paths, but does not
// invoke any system calls in order to resolve relative paths to the actual
// working directory. That is, this is purely a string manipulation, completely
// independent of process state.
std::string CleanPath(absl::string_view path);
} // namespace sapi::file
#endif // SANDBOXED_API_SANDBOX2_UTIL_PATH_H_