mirror of
https://github.com/google/cdc-file-transfer.git
synced 2026-09-13 01:10:44 +03:00
Christian Schneider
4326e972ac
The tools allow efficient and fast synchronization of large directory trees from a Windows workstation to a Linux target machine. cdc_rsync* support efficient copy of files by using content-defined chunking (CDC) to identify chunks within files that can be reused. asset_stream_manager + cdc_fuse_fs support efficient streaming of a local directory to a remote virtual file system based on FUSE. It also employs CDC to identify and reuse unchanged data chunks.
73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
/*
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* Copyright 2022 Google LLC
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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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* 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, 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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*/
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#ifndef COMMON_PATH_FILTER_H_
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#define COMMON_PATH_FILTER_H_
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#include <string>
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#include <vector>
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namespace cdc_ft {
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namespace internal {
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// Returns true iff |path| matches |pattern|. Exposed for testing purposes.
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bool IsMatch(const std::string& pattern, const std::string& path);
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} // namespace internal
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// Applies include and exclude filter rules to a path.
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class PathFilter {
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public:
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struct Rule {
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enum class Type {
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kInclude,
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kExclude,
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};
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Type type;
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std::string pattern;
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Rule(Type type, std::string pattern);
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};
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PathFilter();
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~PathFilter();
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// Returns true if no rule has been added.
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bool IsEmpty() const;
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// Adds a rule to the set of filter rules. The |type| determines whether paths
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// that match |pattern| should be filtered in or out, see IsMatch(). |pattern|
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// is a Windows style file path pattern and supports * and ? wildcards. Does
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// not support general glob-style ** or [a-z] patterns.
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void AddRule(Rule::Type type, std::string pattern);
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// Returns all rules added.
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const std::vector<Rule>& GetRules() const { return rules_; }
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// Applies filter rules in the order they have been passed to AddRule().
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// Returns true if the first matching rule is of type |kInclude| or no
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// matching rule is found. Returns false if the first matching rule is
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// of type |kExclude|.
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bool IsMatch(const std::string& path) const;
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private:
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std::vector<Rule> rules_;
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};
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} // namespace cdc_ft
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#endif // COMMON_PATH_FILTER_H_
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