1 //
2 // Copyright 2019 The Abseil Authors.
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 //      https://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15 
16 #ifndef ABSL_FLAGS_INTERNAL_PARSE_H_
17 #define ABSL_FLAGS_INTERNAL_PARSE_H_
18 
19 #include <string>
20 #include <vector>
21 
22 #include "absl/base/config.h"
23 #include "absl/flags/declare.h"
24 
25 ABSL_DECLARE_FLAG(std::vector<std::string>, flagfile);
26 ABSL_DECLARE_FLAG(std::vector<std::string>, fromenv);
27 ABSL_DECLARE_FLAG(std::vector<std::string>, tryfromenv);
28 ABSL_DECLARE_FLAG(std::vector<std::string>, undefok);
29 
30 namespace absl {
31 ABSL_NAMESPACE_BEGIN
32 namespace flags_internal {
33 
34 enum class ArgvListAction { kRemoveParsedArgs, kKeepParsedArgs };
35 enum class UsageFlagsAction { kHandleUsage, kIgnoreUsage };
36 enum class OnUndefinedFlag {
37   kIgnoreUndefined,
38   kReportUndefined,
39   kAbortIfUndefined
40 };
41 
42 std::vector<char*> ParseCommandLineImpl(int argc, char* argv[],
43                                         ArgvListAction arg_list_act,
44                                         UsageFlagsAction usage_flag_act,
45                                         OnUndefinedFlag on_undef_flag);
46 
47 }  // namespace flags_internal
48 ABSL_NAMESPACE_END
49 }  // namespace absl
50 
51 #endif  // ABSL_FLAGS_INTERNAL_PARSE_H_
52