| /* |
| * Copyright (C) 2015 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.h" |
| |
| #include <dirent.h> |
| #include <errno.h> |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| |
| #include <base/logging.h> |
| |
| void PrintIndented(size_t indent, const char* fmt, ...) { |
| va_list ap; |
| va_start(ap, fmt); |
| printf("%*s", static_cast<int>(indent * 2), ""); |
| vprintf(fmt, ap); |
| va_end(ap); |
| } |
| |
| bool IsPowerOfTwo(uint64_t value) { |
| return (value != 0 && ((value & (value - 1)) == 0)); |
| } |
| |
| bool NextArgumentOrError(const std::vector<std::string>& args, size_t* pi) { |
| if (*pi + 1 == args.size()) { |
| LOG(ERROR) << "No argument following " << args[*pi] << " option. Try `simpleperf help " |
| << args[0] << "`"; |
| return false; |
| } |
| ++*pi; |
| return true; |
| } |
| |
| void GetEntriesInDir(const std::string& dirpath, std::vector<std::string>* files, |
| std::vector<std::string>* subdirs) { |
| if (files != nullptr) { |
| files->clear(); |
| } |
| if (subdirs != nullptr) { |
| subdirs->clear(); |
| } |
| DIR* dir = opendir(dirpath.c_str()); |
| if (dir == nullptr) { |
| PLOG(DEBUG) << "can't open dir " << dirpath; |
| return; |
| } |
| dirent* entry; |
| while ((entry = readdir(dir)) != nullptr) { |
| if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) { |
| continue; |
| } |
| if (entry->d_type == DT_DIR) { |
| if (subdirs != nullptr) { |
| subdirs->push_back(entry->d_name); |
| } |
| } else { |
| if (files != nullptr) { |
| files->push_back(entry->d_name); |
| } |
| } |
| } |
| closedir(dir); |
| } |