| // Copyright (C) 2021 The Android Open Source Project |
| // |
| // 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 "utils/header_abi_util.h" |
| |
| #include <llvm/Support/FileSystem.h> |
| #include <llvm/Support/Path.h> |
| #include <llvm/Support/raw_ostream.h> |
| |
| #include <set> |
| #include <string> |
| #include <vector> |
| |
| |
| namespace header_checker { |
| namespace utils { |
| |
| |
| static bool ShouldSkipFile(llvm::StringRef &file_name) { |
| // Ignore swap files, hidden files, and hidden directories. Do not recurse |
| // into hidden directories either. We should also not look at source files. |
| // Many projects include source files in their exports. |
| return (file_name.empty() || file_name.startswith(".") || |
| file_name.endswith(".swp") || file_name.endswith(".swo") || |
| file_name.endswith("#") || file_name.endswith(".cpp") || |
| file_name.endswith(".cc") || file_name.endswith(".c")); |
| } |
| |
| std::string GetCwd() { |
| llvm::SmallString<256> cwd; |
| if (llvm::sys::fs::current_path(cwd)) { |
| llvm::errs() << "ERROR: Failed to get current working directory\n"; |
| ::exit(1); |
| } |
| return cwd.c_str(); |
| } |
| |
| std::string NormalizePath(const std::string &path, |
| const std::string &root_dir) { |
| llvm::SmallString<256> norm_path(path); |
| if (llvm::sys::fs::make_absolute(norm_path)) { |
| return ""; |
| } |
| llvm::sys::path::remove_dots(norm_path, /* remove_dot_dot = */ true); |
| // Convert /cwd/path to /path. |
| if (llvm::sys::path::replace_path_prefix(norm_path, root_dir, "")) { |
| // Convert /path to path. |
| return llvm::sys::path::relative_path(norm_path.str()).str(); |
| } |
| return std::string(norm_path); |
| } |
| |
| static bool CollectExportedHeaderSet(const std::string &dir_name, |
| std::set<std::string> *exported_headers, |
| const std::string &root_dir) { |
| std::error_code ec; |
| llvm::sys::fs::recursive_directory_iterator walker(dir_name, ec); |
| // Default construction - end of directory. |
| llvm::sys::fs::recursive_directory_iterator end; |
| for ( ; walker != end; walker.increment(ec)) { |
| if (ec) { |
| llvm::errs() << "Failed to walk directory: " << dir_name << ": " |
| << ec.message() << "\n"; |
| return false; |
| } |
| |
| const std::string &file_path = walker->path(); |
| |
| llvm::StringRef file_name(llvm::sys::path::filename(file_path)); |
| // Ignore swap files and hidden files / dirs. Do not recurse into them too. |
| // We should also not look at source files. Many projects include source |
| // files in their exports. |
| if (ShouldSkipFile(file_name)) { |
| walker.no_push(); |
| continue; |
| } |
| |
| llvm::ErrorOr<llvm::sys::fs::basic_file_status> status = walker->status(); |
| if (!status) { |
| llvm::errs() << "Failed to stat file: " << file_path << "\n"; |
| return false; |
| } |
| |
| if ((status->type() != llvm::sys::fs::file_type::symlink_file) && |
| (status->type() != llvm::sys::fs::file_type::regular_file)) { |
| // Ignore non regular files, except symlinks. |
| continue; |
| } |
| |
| exported_headers->insert(NormalizePath(file_path, root_dir)); |
| } |
| return true; |
| } |
| |
| std::set<std::string> |
| CollectAllExportedHeaders(const std::vector<std::string> &exported_header_dirs, |
| const std::string &root_dir) { |
| std::set<std::string> exported_headers; |
| for (auto &&dir : exported_header_dirs) { |
| if (!CollectExportedHeaderSet(dir, &exported_headers, root_dir)) { |
| llvm::errs() << "Couldn't collect exported headers\n"; |
| ::exit(1); |
| } |
| } |
| return exported_headers; |
| } |
| |
| } // namespace utils |
| } // namespace header_checker |