1 | // Licensed to the Apache Software Foundation (ASF) under one |
2 | // or more contributor license agreements. See the NOTICE file |
3 | // distributed with this work for additional information |
4 | // regarding copyright ownership. The ASF licenses this file |
5 | // to you under the Apache License, Version 2.0 (the |
6 | // "License"); you may not use this file except in compliance |
7 | // with the License. You may obtain a copy of the License at |
8 | // |
9 | // http://www.apache.org/licenses/LICENSE-2.0 |
10 | // |
11 | // Unless required by applicable law or agreed to in writing, |
12 | // software distributed under the License is distributed on an |
13 | // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
14 | // KIND, either express or implied. See the License for the |
15 | // specific language governing permissions and limitations |
16 | // under the License. |
17 | |
18 | #ifndef ARROW_UTIL_COMPRESSION_ZLIB_H |
19 | #define ARROW_UTIL_COMPRESSION_ZLIB_H |
20 | |
21 | #include <cstdint> |
22 | #include <memory> |
23 | |
24 | #include "arrow/status.h" |
25 | #include "arrow/util/compression.h" |
26 | #include "arrow/util/visibility.h" |
27 | |
28 | namespace arrow { |
29 | namespace util { |
30 | |
31 | // GZip codec. |
32 | class ARROW_EXPORT GZipCodec : public Codec { |
33 | public: |
34 | /// Compression formats supported by the zlib library |
35 | enum Format { |
36 | ZLIB, |
37 | DEFLATE, |
38 | GZIP, |
39 | }; |
40 | |
41 | explicit GZipCodec(Format format = GZIP); |
42 | ~GZipCodec() override; |
43 | |
44 | Status Decompress(int64_t input_len, const uint8_t* input, int64_t output_buffer_len, |
45 | uint8_t* output_buffer) override; |
46 | |
47 | Status Decompress(int64_t input_len, const uint8_t* input, int64_t output_buffer_len, |
48 | uint8_t* output_buffer, int64_t* output_len) override; |
49 | |
50 | Status Compress(int64_t input_len, const uint8_t* input, int64_t output_buffer_len, |
51 | uint8_t* output_buffer, int64_t* output_len) override; |
52 | |
53 | int64_t MaxCompressedLen(int64_t input_len, const uint8_t* input) override; |
54 | |
55 | Status MakeCompressor(std::shared_ptr<Compressor>* out) override; |
56 | |
57 | Status MakeDecompressor(std::shared_ptr<Decompressor>* out) override; |
58 | |
59 | const char* name() const override; |
60 | |
61 | private: |
62 | // The gzip compressor is stateful |
63 | class GZipCodecImpl; |
64 | std::unique_ptr<GZipCodecImpl> impl_; |
65 | }; |
66 | |
67 | } // namespace util |
68 | } // namespace arrow |
69 | |
70 | #endif // ARROW_UTIL_COMPRESSION_ZLIB_H |
71 | |