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Parso is a lightweight Java library designed to read SAS7BDAT datasets. The Parso interfaces
are analogous to libraries designed to read table-storing files, for example, CSVReader library.
Despite its small size, the Parso library is the only full-featured open-source solution to process SAS7BDAT
datasets, both uncompressed, CHAR-compressed and BIN-compressed. It is effective in processing clinical and
statistical data often stored in SAS7BDAT format. Parso allows converting data into CSV format.
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/**
* *************************************************************************
* Copyright (C) 2015 EPAM
* Licensed 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.
*
* *************************************************************************
*/
package com.epam.parso.impl;
/**
* Interface which should be implemented in all data decompressors.
*/
interface Decompressor {
/**
* The function to decompress data. Compressed data are an array of bytes with control bytes and data bytes.
* The project documentation contains descriptions of the decompression algorithm.
*
* @param offset the offset of bytes array in page
that contains compressed data.
* @param srcLength the length of bytes array that contains compressed data.
* @param resultLength the length of bytes array that contains decompressed data.
* @param page an array of bytes with compressed data.
* @return an array of bytes with decompressed data.
*/
byte[] decompressRow(int offset, int srcLength, int resultLength, byte[] page);
}
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