X-Git-Url: http://www2.svjatoslav.eu/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Feu%2Fsvjatoslav%2Fcommons%2Fdata%2FBitInputStream.java;h=af6486fe1f63a75ed3e9c479065173ea83bf9d72;hb=0bdce2e2b2c16cc9576e8d96c67ce2830c8b0afc;hp=3ecff980515aa769b9599eee0ee692270ec9550a;hpb=26f09b1ebcafae67855b55ad588d5332a107d202;p=svjatoslav_commons.git diff --git a/src/main/java/eu/svjatoslav/commons/data/BitInputStream.java b/src/main/java/eu/svjatoslav/commons/data/BitInputStream.java index 3ecff98..af6486f 100755 --- a/src/main/java/eu/svjatoslav/commons/data/BitInputStream.java +++ b/src/main/java/eu/svjatoslav/commons/data/BitInputStream.java @@ -1,64 +1,49 @@ /* - * Svjatoslav Commons - shared library of common functionality. - * Copyright (C) 2012, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public License - * as published by the Free Software Foundation. + * Svjatoslav Commons - shared library of common functionality. Author: Svjatoslav Agejenko. + * This project is released under Creative Commons Zero (CC0) license. */ - package eu.svjatoslav.commons.data; -/** - * Read individual bits from the input stream. - */ import java.io.IOException; import java.io.InputStream; +/** + * Read individual bits from the input stream. + */ public class BitInputStream { - int currentByte; - int currentBytePointer = -1; - - InputStream inputStream; - - public BitInputStream(final InputStream inputStream) { - this.inputStream = inputStream; - } + private final InputStream inputStream; + private int currentByte; + private int currentBytePointer = -1; - public int readBits(final int bitCount) throws IOException { + public BitInputStream(final InputStream inputStream) { + this.inputStream = inputStream; + } - int readableByte = 0; - for (int i = 0; i < bitCount; i++) { + public int readBits(final int bitCount) throws IOException { - readableByte = readableByte << 1; + int readableByte = 0; + for (int i = 0; i < bitCount; i++) { - if (currentBytePointer == -1) { - currentBytePointer = 7; - currentByte = inputStream.read(); - } + readableByte = readableByte << 1; - int mask = 1; - mask = mask << currentBytePointer; + if (currentBytePointer == -1) { + currentBytePointer = 7; + currentByte = inputStream.read(); + } - final int currentBit = currentByte & mask; + int mask = 1; + mask = mask << currentBytePointer; - if (currentBit != 0) { - readableByte = readableByte | 1; - } + final int currentBit = currentByte & mask; - currentBytePointer--; - } - return readableByte; - } + if (currentBit != 0) + readableByte = readableByte | 1; - public int readIntegerCompressed8() throws IOException { - if (readBits(1) == 0) { - return readBits(8); - } else { - return readBits(32); - } - } + currentBytePointer--; + } + return readableByte; + } }