2678afd2db
Refactor the interface of create_file_reader the file_size and mtime are merged into FileDescription, not in FileReaderOptions anymore. Now the file handle cache can get correct file's modification time from FileDescription. Add HdfsIO for hdfs file reader pick from [Enhancement](multi-catalog) Add hdfs read statistics profile. #21442
69 lines
2.7 KiB
C++
69 lines
2.7 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://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,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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//
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// Utility methods for dealing with file paths.
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#pragma once
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#include <string>
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#include <vector>
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namespace doris {
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namespace path_util {
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// NOTE: The methods here are only related to path processing, do not involve
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// any file and IO operations.
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extern const std::string kTmpInfix;
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// Join two path segments with the appropriate path separator, if necessary.
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std::string join_path_segments(const std::string& a, const std::string& b);
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// Join each path segment in a list with a common suffix segment.
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std::vector<std::string> join_path_segments_v(const std::vector<std::string>& v,
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const std::string& s);
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// Split a path into segments with the appropriate path separator.
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std::vector<std::string> split_path(const std::string& path);
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// Return the enclosing directory of path.
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// This is like dirname(3) but for C++ strings.
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// The following list of examples shows the strings returned by dirname() and basename():
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// path dirname basename
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// "/usr/lib" "/usr" "lib"
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// "/usr/" "/" "usr"
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// "usr" "." "usr"
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// "/" "/" "/"
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// "." "." "."
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// ".." "." ".."
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std::string dir_name(const std::string& path);
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// Return the terminal component of a path.
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// This is like basename(3) but for C++ strings.
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std::string base_name(const std::string& path);
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// It is used to replace std::filesystem::path::extension().
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// If the filename contains a dot but does not consist solely of one or to two dots,
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// returns the substring of file_name starting at the rightmost dot and ending at
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// the path's end. Otherwise, returns an empty string.
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// The dot is included in the return value so that it is possible to distinguish
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// between no extension and an empty extension.
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// NOTE: path can be either one file's full path or only file name
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std::string file_extension(const std::string& path);
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} // namespace path_util
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} // namespace doris
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