| 78 | } |
| 79 | |
| 80 | CompressionMethod chooseCompressionMethod(const std::string & path, const std::string & hint) |
| 81 | { |
| 82 | std::string file_extension; |
| 83 | if (hint.empty() || hint == "auto") |
| 84 | { |
| 85 | auto pos = path.find_last_of('.'); |
| 86 | if (pos != std::string::npos) |
| 87 | file_extension = path.substr(pos + 1, std::string::npos); |
| 88 | } |
| 89 | |
| 90 | std::string method_str; |
| 91 | |
| 92 | if (file_extension.empty()) |
| 93 | method_str = hint; |
| 94 | else |
| 95 | method_str = std::move(file_extension); |
| 96 | |
| 97 | boost::algorithm::to_lower(method_str); |
| 98 | |
| 99 | if (method_str == "gzip" || method_str == "gz") |
| 100 | return CompressionMethod::Gzip; |
| 101 | if (method_str == "deflate") |
| 102 | return CompressionMethod::Zlib; |
| 103 | if (method_str == "brotli" || method_str == "br") |
| 104 | return CompressionMethod::Brotli; |
| 105 | if (method_str == "lzma" || method_str == "xz") |
| 106 | return CompressionMethod::Xz; |
| 107 | if (method_str == "zstd" || method_str == "zst") |
| 108 | return CompressionMethod::Zstd; |
| 109 | if (method_str == "lz4") |
| 110 | return CompressionMethod::Lz4; |
| 111 | if (method_str == "bz2") |
| 112 | return CompressionMethod::Bzip2; |
| 113 | if (method_str == "snappy") |
| 114 | return CompressionMethod::Snappy; |
| 115 | if (hint.empty() || hint == "auto" || hint == "none") |
| 116 | return CompressionMethod::None; |
| 117 | |
| 118 | throw Exception(ErrorCodes::NOT_IMPLEMENTED, "Unknown compression method '{}'. " |
| 119 | "Only 'auto', 'none', 'gzip', 'deflate', 'br', 'xz', 'zstd', 'lz4', 'bz2', 'snappy' are supported as compression methods", hint); |
| 120 | } |
| 121 | |
| 122 | std::pair<uint64_t, uint64_t> getCompressionLevelRange(const CompressionMethod & method) |
| 123 | { |
no test coverage detected