1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/util/compression_internal.h"
#include <cstddef>
#include <cstdint>
#include <memory>
#include <snappy.h>
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/result.h"
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/status.h"
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/util/logging.h"
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/util/macros.h"
using std::size_t;
namespace arrow20 {
namespace util {
namespace internal {
namespace {
// ----------------------------------------------------------------------
// Snappy implementation
class SnappyCodec : public Codec {
public:
Result<int64_t> Decompress(int64_t input_len, const uint8_t* input,
int64_t output_buffer_len, uint8_t* output_buffer) override {
size_t decompressed_size;
if (!snappy::GetUncompressedLength(reinterpret_cast<const char*>(input),
static_cast<size_t>(input_len),
&decompressed_size)) {
return Status::IOError("Corrupt snappy compressed data.");
}
if (output_buffer_len < static_cast<int64_t>(decompressed_size)) {
return Status::Invalid("Output buffer size (", output_buffer_len, ") must be ",
decompressed_size, " or larger.");
}
if (!snappy::RawUncompress(reinterpret_cast<const char*>(input),
static_cast<size_t>(input_len),
reinterpret_cast<char*>(output_buffer))) {
return Status::IOError("Corrupt snappy compressed data.");
}
return static_cast<int64_t>(decompressed_size);
}
int64_t MaxCompressedLen(int64_t input_len,
const uint8_t* ARROW_ARG_UNUSED(input)) override {
DCHECK_GE(input_len, 0);
return snappy::MaxCompressedLength(static_cast<size_t>(input_len));
}
Result<int64_t> Compress(int64_t input_len, const uint8_t* input,
int64_t ARROW_ARG_UNUSED(output_buffer_len),
uint8_t* output_buffer) override {
size_t output_size;
snappy::RawCompress(reinterpret_cast<const char*>(input),
static_cast<size_t>(input_len),
reinterpret_cast<char*>(output_buffer), &output_size);
return static_cast<int64_t>(output_size);
}
Result<std::shared_ptr<Compressor>> MakeCompressor() override {
return Status::NotImplemented("Streaming compression unsupported with Snappy");
}
Result<std::shared_ptr<Decompressor>> MakeDecompressor() override {
return Status::NotImplemented("Streaming decompression unsupported with Snappy");
}
Compression::type compression_type() const override { return Compression::SNAPPY; }
int minimum_compression_level() const override { return kUseDefaultCompressionLevel; }
int maximum_compression_level() const override { return kUseDefaultCompressionLevel; }
int default_compression_level() const override { return kUseDefaultCompressionLevel; }
};
} // namespace
std::unique_ptr<Codec> MakeSnappyCodec() { return std::make_unique<SnappyCodec>(); }
} // namespace internal
} // namespace util
} // namespace arrow20
|
