root / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / drivers / shp / LEDataOutputStream.java @ 213
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/*
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* LEDataOutputStream.java
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*
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* Copyright (c) 1998
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* Roedy Green
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* Canadian Mind Products
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* #208 - 525 Ninth Street
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* New Westminster, BC Canada V3M 5T9
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* tel: (604) 777-1804
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* mailto:roedy@mindprod.com
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* http://mindprod.com
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*
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* Copyright (c) 1998 Roedy Green of Canadian Mind Products
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* Version 1.0 1998 January 6
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* 1.1 1998 January 7 - officially implements DataInput
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* 1.2 1998 January 9 - add LERandomAccessFile
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* 1.3 1998 August 28
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* 1.4 1998 November 10 - add new address and phone.
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* 1.5 1999 October 8 - use cmp.LEDataStream package name.
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* 1.5.x 2000 Febuary 15 - Modifed by James Macgill to include LE/BE switch
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* Very similar to DataOutputStream except it writes little-endian instead of
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* big-endian binary data.
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* We can't extend DataOutputStream directly since it has only final methods.
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* This forces us implement LEDataOutputStream with a DataOutputStream object,
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* and use wrapper methods.
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*/
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package com.iver.cit.gvsig.fmap.drivers.shp; |
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import java.io.DataOutput; |
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import java.io.DataOutputStream; |
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import java.io.IOException; |
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import java.io.OutputStream; |
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/**
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* DOCUMENT ME!
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*
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* @author vcn
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*/
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public class LEDataOutputStream implements DataOutput { |
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private static final String EmbeddedCopyright = "Copyright 1998 Roedy Green, Canadian Mind Products, http://mindprod.com"; |
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// i n s t a n c e v a r i a b l e s
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protected DataOutputStream d; // to get at high level write methods of DataOutputStream |
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byte[] w; // work array for composing output |
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protected boolean littleEndianMode = true; |
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/**
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* constructor
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*
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* @param out DOCUMENT ME!
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*/
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public LEDataOutputStream(OutputStream out) { |
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this.d = new DataOutputStream(out); |
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w = new byte[8]; // work array for composing output |
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} |
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// L I T T L E E N D I A N W R I T E R S
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// Little endian methods for multi-byte numeric types.
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// Big-endian do fine for single-byte types and strings.
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/**
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* like DataOutputStream.writeShort. also acts as a writeUnsignedShort
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*
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* @param v DOCUMENT ME!
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*
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* @throws IOException DOCUMENT ME!
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*/
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public final void writeShort(int v) throws IOException { |
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if (!littleEndianMode) {
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d.writeShort(v); |
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return;
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} |
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w[0] = (byte) v; |
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w[1] = (byte) (v >> 8); |
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d.write(w, 0, 2); |
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} |
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/**
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* like DataOutputStream.writeChar. Note the parm is an int even though
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* this as a writeChar
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*
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* @param v DOCUMENT ME!
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*
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* @throws IOException DOCUMENT ME!
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*/
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public final void writeChar(int v) throws IOException { |
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if (!littleEndianMode) {
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d.writeChar(v); |
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return;
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} |
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// same code as writeShort
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w[0] = (byte) v; |
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w[1] = (byte) (v >> 8); |
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d.write(w, 0, 2); |
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} |
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/**
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* like DataOutputStream.writeInt.
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*
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* @param v DOCUMENT ME!
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*
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* @throws IOException DOCUMENT ME!
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*/
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public final void writeInt(int v) throws IOException { |
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if (!littleEndianMode) {
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d.writeInt(v); |
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return;
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} |
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w[0] = (byte) v; |
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w[1] = (byte) (v >> 8); |
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w[2] = (byte) (v >> 16); |
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w[3] = (byte) (v >> 24); |
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d.write(w, 0, 4); |
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} |
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/**
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* like DataOutputStream.writeLong.
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*
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* @param v DOCUMENT ME!
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*
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* @throws IOException DOCUMENT ME!
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*/
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public final void writeLong(long v) throws IOException { |
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if (!littleEndianMode) {
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d.writeLong(v); |
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return;
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} |
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w[0] = (byte) v; |
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w[1] = (byte) (v >> 8); |
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w[2] = (byte) (v >> 16); |
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w[3] = (byte) (v >> 24); |
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w[4] = (byte) (v >> 32); |
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w[5] = (byte) (v >> 40); |
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w[6] = (byte) (v >> 48); |
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w[7] = (byte) (v >> 56); |
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d.write(w, 0, 8); |
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} |
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/**
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* like DataOutputStream.writeFloat.
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*
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* @param v DOCUMENT ME!
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*
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* @throws IOException DOCUMENT ME!
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*/
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public final void writeFloat(float v) throws IOException { |
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if (!littleEndianMode) {
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d.writeFloat(v); |
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return;
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} |
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writeInt(Float.floatToIntBits(v));
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} |
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/**
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* like DataOutputStream.writeDouble.
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*
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* @param v DOCUMENT ME!
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*
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* @throws IOException DOCUMENT ME!
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*/
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public final void writeDouble(double v) throws IOException { |
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if (!littleEndianMode) {
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d.writeDouble(v); |
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return;
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} |
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writeLong(Double.doubleToLongBits(v));
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} |
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/**
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* like DataOutputStream.writeChars, flip each char.
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*
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* @param s DOCUMENT ME!
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*
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* @throws IOException DOCUMENT ME!
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*/
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public final void writeChars(String s) throws IOException { |
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if (!littleEndianMode) {
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d.writeChars(s); |
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return;
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} |
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int len = s.length();
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for (int i = 0; i < len; i++) { |
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writeChar(s.charAt(i)); |
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} |
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} |
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// end writeChars
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/**
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* DOCUMENT ME!
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*
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* @param b DOCUMENT ME!
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*
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* @throws IOException DOCUMENT ME!
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*/
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public final synchronized void write(int b) throws IOException { |
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d.write(b); |
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} |
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/**
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* DOCUMENT ME!
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*
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* @param b DOCUMENT ME!
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* @param off DOCUMENT ME!
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* @param len DOCUMENT ME!
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*
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* @throws IOException DOCUMENT ME!
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*/
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public final synchronized void write(byte[] b, int off, int len) |
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throws IOException { |
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d.write(b, off, len); |
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} |
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/**
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* DOCUMENT ME!
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*
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* @throws IOException DOCUMENT ME!
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*/
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public void flush() throws IOException { |
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d.flush(); |
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} |
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/* Only writes one byte */
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public final void writeBoolean(boolean v) throws IOException { |
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d.writeBoolean(v); |
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} |
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/**
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* DOCUMENT ME!
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*
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* @param v DOCUMENT ME!
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*
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* @throws IOException DOCUMENT ME!
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*/
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public final void writeByte(int v) throws IOException { |
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d.writeByte(v); |
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} |
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/**
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* DOCUMENT ME!
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*
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* @param s DOCUMENT ME!
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*
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* @throws IOException DOCUMENT ME!
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*/
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public final void writeBytes(String s) throws IOException { |
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d.writeBytes(s); |
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} |
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/**
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* DOCUMENT ME!
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*
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* @param str DOCUMENT ME!
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*
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* @throws IOException DOCUMENT ME!
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*/
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public final void writeUTF(String str) throws IOException { |
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d.writeUTF(str); |
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} |
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/**
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* DOCUMENT ME!
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*
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* @return DOCUMENT ME!
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*/
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public final int size() { |
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return d.size();
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} |
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/**
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* DOCUMENT ME!
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*
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* @param b DOCUMENT ME!
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*
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* @throws IOException DOCUMENT ME!
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*/
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public final void write(byte[] b) throws IOException { |
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d.write(b, 0, b.length);
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} |
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/**
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* DOCUMENT ME!
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*
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* @throws IOException DOCUMENT ME!
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*/
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public final void close() throws IOException { |
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d.close(); |
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} |
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/**
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* DOCUMENT ME!
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*
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* @param flag DOCUMENT ME!
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*/
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public final void setLittleEndianMode(boolean flag) { |
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littleEndianMode = flag; |
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} |
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/**
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* DOCUMENT ME!
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*
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* @return DOCUMENT ME!
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*/
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public final boolean getLittleEndianMode() { |
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return littleEndianMode;
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} |
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/**
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* DOCUMENT ME!
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*
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* @return DOCUMENT ME!
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*/
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public final boolean isLittleEndianMode() { |
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return littleEndianMode;
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} |
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} |
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// end LEDataOutputStream
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