| /* |
| * 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. |
| */ |
| |
| #ifndef INCLUDE_PERFETTO_EXT_BASE_GETOPT_COMPAT_H_ |
| #define INCLUDE_PERFETTO_EXT_BASE_GETOPT_COMPAT_H_ |
| |
| #include <cstddef> // For std::nullptr_t |
| |
| // No translation units other than base/getopt.h and getopt_compat_unittest.cc |
| // should directly include this file. Use base/getopt.h instead. |
| |
| namespace perfetto { |
| namespace base { |
| namespace getopt_compat { |
| |
| // A tiny getopt() replacement for Windows, which doesn't have <getopt.h>. |
| // This implementation is based on the subset of features that we use in the |
| // Perfetto codebase. It doesn't even try to deal with the full surface of GNU's |
| // getopt(). |
| // Limitations: |
| // - getopt_long_only() is not supported. |
| // - optional_argument is not supported. That is extremely subtle and caused us |
| // problems in the past with GNU's getopt. |
| // - It does not reorder non-option arguments. It behaves like MacOS getopt, or |
| // GNU's when POSIXLY_CORRECT=1. |
| // - Doesn't expose optopt or opterr. |
| // - option.flag and longindex are not supported and must be nullptr. |
| |
| enum { |
| no_argument = 0, |
| required_argument = 1, |
| }; |
| |
| struct option { |
| const char* name; |
| int has_arg; |
| std::nullptr_t flag; // Only nullptr is supported. |
| int val; |
| }; |
| |
| extern char* optarg; |
| extern int optind; |
| extern int optopt; |
| extern int opterr; |
| |
| int getopt_long(int argc, |
| char** argv, |
| const char* shortopts, |
| const option* longopts, |
| std::nullptr_t /*longindex is not supported*/); |
| |
| int getopt(int argc, char** argv, const char* shortopts); |
| |
| } // namespace getopt_compat |
| } // namespace base |
| } // namespace perfetto |
| |
| #endif // INCLUDE_PERFETTO_EXT_BASE_GETOPT_COMPAT_H_ |