1*b1cdbd2cSJim Jagielski /************************************************************** 2*b1cdbd2cSJim Jagielski * 3*b1cdbd2cSJim Jagielski * Licensed to the Apache Software Foundation (ASF) under one 4*b1cdbd2cSJim Jagielski * or more contributor license agreements. See the NOTICE file 5*b1cdbd2cSJim Jagielski * distributed with this work for additional information 6*b1cdbd2cSJim Jagielski * regarding copyright ownership. The ASF licenses this file 7*b1cdbd2cSJim Jagielski * to you under the Apache License, Version 2.0 (the 8*b1cdbd2cSJim Jagielski * "License"); you may not use this file except in compliance 9*b1cdbd2cSJim Jagielski * with the License. You may obtain a copy of the License at 10*b1cdbd2cSJim Jagielski * 11*b1cdbd2cSJim Jagielski * http://www.apache.org/licenses/LICENSE-2.0 12*b1cdbd2cSJim Jagielski * 13*b1cdbd2cSJim Jagielski * Unless required by applicable law or agreed to in writing, 14*b1cdbd2cSJim Jagielski * software distributed under the License is distributed on an 15*b1cdbd2cSJim Jagielski * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*b1cdbd2cSJim Jagielski * KIND, either express or implied. See the License for the 17*b1cdbd2cSJim Jagielski * specific language governing permissions and limitations 18*b1cdbd2cSJim Jagielski * under the License. 19*b1cdbd2cSJim Jagielski * 20*b1cdbd2cSJim Jagielski *************************************************************/ 21*b1cdbd2cSJim Jagielski 22*b1cdbd2cSJim Jagielski 23*b1cdbd2cSJim Jagielski package com.sun.star.lib.uno.adapter; 24*b1cdbd2cSJim Jagielski 25*b1cdbd2cSJim Jagielski import java.io.IOException; 26*b1cdbd2cSJim Jagielski import com.sun.star.io.XInputStream; 27*b1cdbd2cSJim Jagielski import java.io.InputStream; 28*b1cdbd2cSJim Jagielski 29*b1cdbd2cSJim Jagielski /** The <code>InputStreamToInputXStreamAdapter</code> wraps the 30*b1cdbd2cSJim Jagielski Java <code>InputStream</code> object into a 31*b1cdbd2cSJim Jagielski UNO <code>XInputStream</code> object. 32*b1cdbd2cSJim Jagielski This allows users to access an <code>InputStream</code> 33*b1cdbd2cSJim Jagielski as if it were an <code>XInputStream</code>. 34*b1cdbd2cSJim Jagielski */ 35*b1cdbd2cSJim Jagielski public class InputStreamToXInputStreamAdapter implements XInputStream { 36*b1cdbd2cSJim Jagielski 37*b1cdbd2cSJim Jagielski /** 38*b1cdbd2cSJim Jagielski * Internal store to the InputStream 39*b1cdbd2cSJim Jagielski */ 40*b1cdbd2cSJim Jagielski private InputStream iIn; 41*b1cdbd2cSJim Jagielski 42*b1cdbd2cSJim Jagielski /** 43*b1cdbd2cSJim Jagielski * Constructor. 44*b1cdbd2cSJim Jagielski * 45*b1cdbd2cSJim Jagielski * @param in The <code>XInputStream</code> to be 46*b1cdbd2cSJim Jagielski * accessed as an <code>InputStream</code>. 47*b1cdbd2cSJim Jagielski */ InputStreamToXInputStreamAdapter(InputStream in)48*b1cdbd2cSJim Jagielski public InputStreamToXInputStreamAdapter (InputStream in) 49*b1cdbd2cSJim Jagielski { 50*b1cdbd2cSJim Jagielski iIn = in; 51*b1cdbd2cSJim Jagielski } 52*b1cdbd2cSJim Jagielski available()53*b1cdbd2cSJim Jagielski public int available() throws 54*b1cdbd2cSJim Jagielski com.sun.star.io.IOException 55*b1cdbd2cSJim Jagielski { 56*b1cdbd2cSJim Jagielski 57*b1cdbd2cSJim Jagielski int bytesAvail; 58*b1cdbd2cSJim Jagielski 59*b1cdbd2cSJim Jagielski try { 60*b1cdbd2cSJim Jagielski bytesAvail = iIn.available(); 61*b1cdbd2cSJim Jagielski } catch (IOException e) { 62*b1cdbd2cSJim Jagielski throw new com.sun.star.io.IOException(e.toString()); 63*b1cdbd2cSJim Jagielski } 64*b1cdbd2cSJim Jagielski 65*b1cdbd2cSJim Jagielski return(bytesAvail); 66*b1cdbd2cSJim Jagielski } 67*b1cdbd2cSJim Jagielski closeInput()68*b1cdbd2cSJim Jagielski public void closeInput() throws 69*b1cdbd2cSJim Jagielski com.sun.star.io.IOException 70*b1cdbd2cSJim Jagielski { 71*b1cdbd2cSJim Jagielski try { 72*b1cdbd2cSJim Jagielski iIn.close(); 73*b1cdbd2cSJim Jagielski } catch (IOException e) { 74*b1cdbd2cSJim Jagielski throw new com.sun.star.io.IOException(e.toString()); 75*b1cdbd2cSJim Jagielski } 76*b1cdbd2cSJim Jagielski } 77*b1cdbd2cSJim Jagielski readBytes(byte[][] b, int len)78*b1cdbd2cSJim Jagielski public int readBytes(byte[][] b, int len) throws 79*b1cdbd2cSJim Jagielski com.sun.star.io.IOException 80*b1cdbd2cSJim Jagielski { 81*b1cdbd2cSJim Jagielski int count = 0; 82*b1cdbd2cSJim Jagielski try { 83*b1cdbd2cSJim Jagielski long bytesRead=0; 84*b1cdbd2cSJim Jagielski if (len >iIn.available()) { 85*b1cdbd2cSJim Jagielski bytesRead = iIn.read(b[0], 0, iIn.available()); 86*b1cdbd2cSJim Jagielski } 87*b1cdbd2cSJim Jagielski else{ 88*b1cdbd2cSJim Jagielski bytesRead = iIn.read(b[0], 0, len); 89*b1cdbd2cSJim Jagielski } 90*b1cdbd2cSJim Jagielski // Casting bytesRead to an int is okay, since the user can 91*b1cdbd2cSJim Jagielski // only pass in an integer length to read, so the bytesRead 92*b1cdbd2cSJim Jagielski // must <= len. 93*b1cdbd2cSJim Jagielski // 94*b1cdbd2cSJim Jagielski if (bytesRead <= 0) { 95*b1cdbd2cSJim Jagielski return(0); 96*b1cdbd2cSJim Jagielski } 97*b1cdbd2cSJim Jagielski return ((int)bytesRead); 98*b1cdbd2cSJim Jagielski 99*b1cdbd2cSJim Jagielski 100*b1cdbd2cSJim Jagielski } catch (IOException e) { 101*b1cdbd2cSJim Jagielski throw new com.sun.star.io.IOException("reader error: "+e.toString()); 102*b1cdbd2cSJim Jagielski } 103*b1cdbd2cSJim Jagielski } 104*b1cdbd2cSJim Jagielski readSomeBytes(byte[][] b, int len)105*b1cdbd2cSJim Jagielski public int readSomeBytes(byte[][] b, int len) throws 106*b1cdbd2cSJim Jagielski com.sun.star.io.IOException 107*b1cdbd2cSJim Jagielski { 108*b1cdbd2cSJim Jagielski int count = 0; 109*b1cdbd2cSJim Jagielski try { 110*b1cdbd2cSJim Jagielski long bytesRead=0; 111*b1cdbd2cSJim Jagielski if (len >iIn.available()) { 112*b1cdbd2cSJim Jagielski bytesRead = iIn.read(b[0], 0, iIn.available()); 113*b1cdbd2cSJim Jagielski } 114*b1cdbd2cSJim Jagielski else{ 115*b1cdbd2cSJim Jagielski bytesRead = iIn.read(b[0], 0, len); 116*b1cdbd2cSJim Jagielski } 117*b1cdbd2cSJim Jagielski // Casting bytesRead to an int is okay, since the user can 118*b1cdbd2cSJim Jagielski // only pass in an integer length to read, so the bytesRead 119*b1cdbd2cSJim Jagielski // must <= len. 120*b1cdbd2cSJim Jagielski // 121*b1cdbd2cSJim Jagielski if (bytesRead <= 0) { 122*b1cdbd2cSJim Jagielski return(0); 123*b1cdbd2cSJim Jagielski } 124*b1cdbd2cSJim Jagielski return ((int)bytesRead); 125*b1cdbd2cSJim Jagielski 126*b1cdbd2cSJim Jagielski 127*b1cdbd2cSJim Jagielski } catch (IOException e) { 128*b1cdbd2cSJim Jagielski throw new com.sun.star.io.IOException("reader error: "+e.toString()); 129*b1cdbd2cSJim Jagielski } 130*b1cdbd2cSJim Jagielski } 131*b1cdbd2cSJim Jagielski skipBytes(int n)132*b1cdbd2cSJim Jagielski public void skipBytes(int n) throws 133*b1cdbd2cSJim Jagielski com.sun.star.io.IOException 134*b1cdbd2cSJim Jagielski { 135*b1cdbd2cSJim Jagielski int avail; 136*b1cdbd2cSJim Jagielski int tmpLongVal = n; 137*b1cdbd2cSJim Jagielski int tmpIntVal; 138*b1cdbd2cSJim Jagielski 139*b1cdbd2cSJim Jagielski try { 140*b1cdbd2cSJim Jagielski avail = iIn.available(); 141*b1cdbd2cSJim Jagielski } catch (IOException e) { 142*b1cdbd2cSJim Jagielski throw new com.sun.star.io.IOException(e.toString()); 143*b1cdbd2cSJim Jagielski } 144*b1cdbd2cSJim Jagielski 145*b1cdbd2cSJim Jagielski do { 146*b1cdbd2cSJim Jagielski if (tmpLongVal >= Integer.MAX_VALUE) { 147*b1cdbd2cSJim Jagielski tmpIntVal = Integer.MAX_VALUE; 148*b1cdbd2cSJim Jagielski } else { 149*b1cdbd2cSJim Jagielski // Casting is safe here. 150*b1cdbd2cSJim Jagielski tmpIntVal = (int)tmpLongVal; 151*b1cdbd2cSJim Jagielski } 152*b1cdbd2cSJim Jagielski tmpLongVal -= tmpIntVal; 153*b1cdbd2cSJim Jagielski 154*b1cdbd2cSJim Jagielski try { 155*b1cdbd2cSJim Jagielski iIn.skip(tmpIntVal); 156*b1cdbd2cSJim Jagielski } catch (IOException e) { 157*b1cdbd2cSJim Jagielski throw new com.sun.star.io.IOException(e.toString()); 158*b1cdbd2cSJim Jagielski } 159*b1cdbd2cSJim Jagielski } while (tmpLongVal > 0); 160*b1cdbd2cSJim Jagielski } 161*b1cdbd2cSJim Jagielski } 162*b1cdbd2cSJim Jagielski 163