X-Git-Url: http://www2.svjatoslav.eu/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Feu%2Fsvjatoslav%2Fcommons%2Fdata%2FBitInputStream.java;h=664ffcbc3c56ba9f1b06d51089bbd1d88ed75488;hb=6846681d727a07385bcd3e0eb856f70a7e96448c;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..664ffcb 100755 --- a/src/main/java/eu/svjatoslav/commons/data/BitInputStream.java +++ b/src/main/java/eu/svjatoslav/commons/data/BitInputStream.java @@ -1,10 +1,10 @@ /* * Svjatoslav Commons - shared library of common functionality. - * Copyright (C) 2012, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu - * + * Copyright ©2012-2017, 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. + * modify it under the terms of version 3 of the GNU Lesser General Public License + * or later as published by the Free Software Foundation. */ package eu.svjatoslav.commons.data; @@ -18,47 +18,37 @@ import java.io.InputStream; public class BitInputStream { - int currentByte; - int currentBytePointer = -1; + private final InputStream inputStream; + private int currentByte; + private int currentBytePointer = -1; - InputStream inputStream; + public BitInputStream(final InputStream inputStream) { + this.inputStream = inputStream; + } - public BitInputStream(final InputStream inputStream) { - this.inputStream = inputStream; - } + public int readBits(final int bitCount) throws IOException { - public int readBits(final int bitCount) throws IOException { + int readableByte = 0; + for (int i = 0; i < bitCount; i++) { - int readableByte = 0; - for (int i = 0; i < bitCount; i++) { + readableByte = readableByte << 1; - readableByte = readableByte << 1; + if (currentBytePointer == -1) { + currentBytePointer = 7; + currentByte = inputStream.read(); + } - if (currentBytePointer == -1) { - currentBytePointer = 7; - currentByte = inputStream.read(); - } + int mask = 1; + mask = mask << currentBytePointer; - int mask = 1; - mask = mask << currentBytePointer; + final int currentBit = currentByte & mask; - final int currentBit = currentByte & mask; + if (currentBit != 0) + readableByte = readableByte | 1; - if (currentBit != 0) { - readableByte = readableByte | 1; - } - - currentBytePointer--; - } - return readableByte; - } - - public int readIntegerCompressed8() throws IOException { - if (readBits(1) == 0) { - return readBits(8); - } else { - return readBits(32); - } - } + currentBytePointer--; + } + return readableByte; + } }