path_util.h
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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_PATH_UTIL_H_
17 #define ABSL_FLAGS_INTERNAL_PATH_UTIL_H_
18 
19 #include "absl/strings/match.h"
21 
22 namespace absl {
23 namespace flags_internal {
24 
25 // A portable interface that returns the basename of the filename passed as an
26 // argument. It is similar to basename(3)
27 // <https://linux.die.net/man/3/basename>.
28 // For example:
29 // flags_internal::Basename("a/b/prog/file.cc")
30 // returns "file.cc"
31 // flags_internal::Basename("file.cc")
32 // returns "file.cc"
34  auto last_slash_pos = filename.find_last_of("/\\");
35 
36  return last_slash_pos == absl::string_view::npos
37  ? filename
38  : filename.substr(last_slash_pos + 1);
39 }
40 
41 // A portable interface that returns the directory name of the filename
42 // passed as an argument, including the trailing slash.
43 // Returns the empty string if a slash is not found in the input file name.
44 // For example:
45 // flags_internal::Package("a/b/prog/file.cc")
46 // returns "a/b/prog/"
47 // flags_internal::Package("file.cc")
48 // returns ""
50  auto last_slash_pos = filename.find_last_of("/\\");
51 
52  return last_slash_pos == absl::string_view::npos
54  : filename.substr(0, last_slash_pos + 1);
55 }
56 
57 } // namespace flags_internal
58 } // namespace absl
59 
60 #endif // ABSL_FLAGS_INTERNAL_PATH_UTIL_H_
string_view substr(size_type pos, size_type n=npos) const
Definition: string_view.h:354
static constexpr size_type npos
Definition: string_view.h:159
absl::string_view Package(absl::string_view filename)
Definition: path_util.h:49
Definition: algorithm.h:29
absl::string_view Basename(absl::string_view filename)
Definition: path_util.h:33
size_type find_last_of(string_view s, size_type pos=npos) const noexcept
Definition: string_view.cc:179


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autogenerated on Mon Feb 28 2022 21:31:19