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_PROGRAM_NAME_H_
17#define ABSL_FLAGS_INTERNAL_PROGRAM_NAME_H_
18
19#include <string>
20
21#include "absl/strings/string_view.h"
22
23// --------------------------------------------------------------------
24// Program name
25
26namespace absl {
27namespace flags_internal {
28
29// Returns program invocation name or "UNKNOWN" if `SetProgramInvocationName()`
30// is never called. At the moment this is always set to argv[0] as part of
31// library initialization.
32std::string ProgramInvocationName();
33
34// Returns base name for program invocation name. For example, if
35// ProgramInvocationName() == "a/b/mybinary"
36// then
37// ShortProgramInvocationName() == "mybinary"
38std::string ShortProgramInvocationName();
39
40// Sets program invocation name to a new value. Should only be called once
41// during program initialization, before any threads are spawned.
42void SetProgramInvocationName(absl::string_view prog_name_str);
43
44} // namespace flags_internal
45} // namespace absl
46
47#endif // ABSL_FLAGS_INTERNAL_PROGRAM_NAME_H_
48