| /* |
| * 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. |
| */ |
| package org.apache.directmemory.lightning.io; |
| |
| import java.io.DataInput; |
| import java.io.FilterInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.ObjectInput; |
| import java.io.PushbackInputStream; |
| import java.io.UTFDataFormatException; |
| |
| import org.apache.directmemory.lightning.Serializer; |
| |
| /** |
| * Parts of this class taken from Hazelcast project |
| */ |
| public class SerializerInputStream |
| extends FilterInputStream |
| implements ObjectInput |
| { |
| |
| private final Serializer serializer; |
| |
| private final byte[] longReadBuffer = new byte[8]; |
| |
| private char lineBuffer[]; |
| |
| public SerializerInputStream( InputStream in, Serializer serializer ) |
| { |
| super( in ); |
| this.serializer = serializer; |
| } |
| |
| @Override |
| public Object readObject() |
| { |
| return serializer.deserialize( (DataInput) this ); |
| } |
| |
| @Override |
| public void readFully( byte[] b ) |
| throws IOException |
| { |
| in.read( b ); |
| } |
| |
| @Override |
| public void readFully( byte[] b, int off, int len ) |
| throws IOException |
| { |
| in.read( b, off, len ); |
| } |
| |
| @Override |
| public int skipBytes( int n ) |
| throws IOException |
| { |
| return (int) in.skip( n ); |
| } |
| |
| @Override |
| public boolean readBoolean() |
| throws IOException |
| { |
| return in.read() == 1; |
| } |
| |
| @Override |
| public byte readByte() |
| throws IOException |
| { |
| return (byte) in.read(); |
| } |
| |
| @Override |
| public int readUnsignedByte() |
| throws IOException |
| { |
| return in.read(); |
| } |
| |
| @Override |
| public short readShort() |
| throws IOException |
| { |
| int byte1 = read(); |
| int byte2 = read(); |
| return (short) ( ( byte1 << 8 ) + ( byte2 << 0 ) ); |
| } |
| |
| @Override |
| public int readUnsignedShort() |
| throws IOException |
| { |
| int byte1 = read(); |
| int byte2 = read(); |
| return (short) ( ( byte1 << 8 ) + ( byte2 << 0 ) ); |
| } |
| |
| @Override |
| public char readChar() |
| throws IOException |
| { |
| return (char) readUnsignedShort(); |
| } |
| |
| @Override |
| public int readInt() |
| throws IOException |
| { |
| final int byte1 = read(); |
| final int byte2 = read(); |
| final int byte3 = read(); |
| final int byte4 = read(); |
| return ( ( byte1 << 24 ) + ( byte2 << 16 ) + ( byte3 << 8 ) + ( byte4 << 0 ) ); |
| } |
| |
| @Override |
| public long readLong() |
| throws IOException |
| { |
| in.read( longReadBuffer ); |
| return ( ( (long) longReadBuffer[0] << 56 ) + ( (long) ( longReadBuffer[1] & 255 ) << 48 ) |
| + ( (long) ( longReadBuffer[2] & 255 ) << 40 ) + ( (long) ( longReadBuffer[3] & 255 ) << 32 ) |
| + ( (long) ( longReadBuffer[4] & 255 ) << 24 ) + ( ( longReadBuffer[5] & 255 ) << 16 ) |
| + ( ( longReadBuffer[6] & 255 ) << 8 ) + ( ( longReadBuffer[7] & 255 ) << 0 ) ); |
| } |
| |
| @Override |
| public float readFloat() |
| throws IOException |
| { |
| return Float.intBitsToFloat( readInt() ); |
| } |
| |
| @Override |
| public double readDouble() |
| throws IOException |
| { |
| return Double.longBitsToDouble( readLong() ); |
| } |
| |
| @Override |
| public String readLine() |
| throws IOException |
| { |
| char buf[] = lineBuffer; |
| if ( buf == null ) |
| { |
| buf = lineBuffer = new char[128]; |
| } |
| int room = buf.length; |
| int offset = 0; |
| int c; |
| loop: while ( true ) |
| { |
| switch ( c = read() ) |
| { |
| case -1: |
| case '\n': |
| break loop; |
| case '\r': |
| final int c2 = read(); |
| if ( ( c2 != '\n' ) && ( c2 != -1 ) ) |
| { |
| new PushbackInputStream( this ).unread( c2 ); |
| } |
| break loop; |
| default: |
| if ( --room < 0 ) |
| { |
| buf = new char[offset + 128]; |
| room = buf.length - offset - 1; |
| System.arraycopy( lineBuffer, 0, buf, 0, offset ); |
| lineBuffer = buf; |
| } |
| buf[offset++] = (char) c; |
| break; |
| } |
| } |
| if ( ( c == -1 ) && ( offset == 0 ) ) |
| { |
| return null; |
| } |
| return String.copyValueOf( buf, 0, offset ); |
| |
| } |
| |
| @Override |
| public String readUTF() |
| throws IOException |
| { |
| boolean isNull = readBoolean(); |
| if ( isNull ) |
| return null; |
| int length = readInt(); |
| StringBuilder result = new StringBuilder( length ); |
| int chunkSize = length / SerializerOutputStream.STRING_CHUNK_SIZE + 1; |
| while ( chunkSize > 0 ) |
| { |
| result.append( readShortUTF() ); |
| chunkSize--; |
| } |
| return result.toString(); |
| } |
| |
| private final String readShortUTF() |
| throws IOException |
| { |
| final int utflen = readShort(); |
| byte[] bytearr = null; |
| char[] chararr = null; |
| bytearr = new byte[utflen]; |
| chararr = new char[utflen]; |
| int c, char2, char3; |
| int count = 0; |
| int chararr_count = 0; |
| readFully( bytearr, 0, utflen ); |
| while ( count < utflen ) |
| { |
| c = bytearr[count] & 0xff; |
| if ( c > 127 ) |
| break; |
| count++; |
| chararr[chararr_count++] = (char) c; |
| } |
| while ( count < utflen ) |
| { |
| c = bytearr[count] & 0xff; |
| switch ( c >> 4 ) |
| { |
| case 0: |
| case 1: |
| case 2: |
| case 3: |
| case 4: |
| case 5: |
| case 6: |
| case 7: |
| /* 0xxxxxxx */ |
| count++; |
| chararr[chararr_count++] = (char) c; |
| break; |
| case 12: |
| case 13: |
| /* 110x xxxx 10xx xxxx */ |
| count += 2; |
| if ( count > utflen ) |
| throw new UTFDataFormatException( "malformed input: partial character at end" ); |
| char2 = bytearr[count - 1]; |
| if ( ( char2 & 0xC0 ) != 0x80 ) |
| throw new UTFDataFormatException( "malformed input around byte " + count ); |
| chararr[chararr_count++] = (char) ( ( ( c & 0x1F ) << 6 ) | ( char2 & 0x3F ) ); |
| break; |
| case 14: |
| /* 1110 xxxx 10xx xxxx 10xx xxxx */ |
| count += 3; |
| if ( count > utflen ) |
| throw new UTFDataFormatException( "malformed input: partial character at end" ); |
| char2 = bytearr[count - 2]; |
| char3 = bytearr[count - 1]; |
| if ( ( ( char2 & 0xC0 ) != 0x80 ) || ( ( char3 & 0xC0 ) != 0x80 ) ) |
| throw new UTFDataFormatException( "malformed input around byte " + ( count - 1 ) ); |
| chararr[chararr_count++] = |
| (char) ( ( ( c & 0x0F ) << 12 ) | ( ( char2 & 0x3F ) << 6 ) | ( ( char3 & 0x3F ) << 0 ) ); |
| break; |
| default: |
| /* 10xx xxxx, 1111 xxxx */ |
| throw new UTFDataFormatException( "malformed input around byte " + count ); |
| } |
| } |
| // The number of chars produced may be less than utflen |
| return new String( chararr, 0, chararr_count ); |
| } |
| } |