| /* Copyright 2015 The TensorFlow Authors. All Rights Reserved. |
| |
| 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 "tensorflow/stream_executor/lib/path.h" |
| #include "absl/strings/str_cat.h" |
| #include "absl/strings/string_view.h" |
| |
| namespace stream_executor { |
| namespace port { |
| namespace internal { |
| |
| static bool IsAbsolutePath(absl::string_view path) { |
| return !path.empty() && path[0] == '/'; |
| } |
| |
| // For an array of paths of length count, append them all together, |
| // ensuring that the proper path separators are inserted between them. |
| string JoinPathImpl(std::initializer_list<absl::string_view> paths) { |
| string result; |
| |
| for (absl::string_view path : paths) { |
| if (path.empty()) continue; |
| |
| if (result.empty()) { |
| result = string(path); |
| continue; |
| } |
| |
| if (result[result.size() - 1] == '/') { |
| if (IsAbsolutePath(path)) { |
| absl::StrAppend(&result, path.substr(1)); |
| } else { |
| absl::StrAppend(&result, path); |
| } |
| } else { |
| if (IsAbsolutePath(path)) { |
| absl::StrAppend(&result, path); |
| } else { |
| absl::StrAppend(&result, "/", path); |
| } |
| } |
| } |
| |
| return result; |
| } |
| |
| } // namespace internal |
| } // namespace port |
| } // namespace stream_executor |