Abseil Common Libraries (C++) (grcp 依赖)
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61 lines
2.0 KiB
61 lines
2.0 KiB
6 years ago
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// Copyright 2019 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef ABSL_FLAGS_INTERNAL_PATH_UTIL_H_
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#define ABSL_FLAGS_INTERNAL_PATH_UTIL_H_
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#include "absl/strings/match.h"
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#include "absl/strings/string_view.h"
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namespace absl {
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namespace flags_internal {
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// A portable interface that returns the basename of the filename passed as an
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// argument. It is similar to basename(3)
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// <https://linux.die.net/man/3/basename>.
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// For example:
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// flags_internal::Basename("a/b/prog/file.cc")
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// returns "file.cc"
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// flags_internal::Basename("file.cc")
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// returns "file.cc"
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inline absl::string_view Basename(absl::string_view filename) {
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auto last_slash_pos = filename.find_last_of("/\\");
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return last_slash_pos == absl::string_view::npos
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? filename
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: filename.substr(last_slash_pos + 1);
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}
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// A portable interface that returns the directory name of the filename
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// passed as an argument, including the trailing slash.
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// Returns the empty string if a slash is not found in the input file name.
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// For example:
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// flags_internal::Package("a/b/prog/file.cc")
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// returns "a/b/prog/"
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// flags_internal::Package("file.cc")
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// returns ""
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inline absl::string_view Package(absl::string_view filename) {
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auto last_slash_pos = filename.find_last_of("/\\");
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return last_slash_pos == absl::string_view::npos
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? absl::string_view()
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: filename.substr(0, last_slash_pos + 1);
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}
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} // namespace flags_internal
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} // namespace absl
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#endif // ABSL_FLAGS_INTERNAL_PATH_UTIL_H_
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