| /************************************************************** |
| * |
| * 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 com.sun.star.lib.uno.adapter; |
| |
| import java.io.IOException; |
| import com.sun.star.io.XInputStream; |
| import java.io.InputStream; |
| |
| /** The <code>InputStreamToInputXStreamAdapter</code> wraps the |
| Java <code>InputStream</code> object into a |
| UNO <code>XInputStream</code> object. |
| This allows users to access an <code>InputStream</code> |
| as if it were an <code>XInputStream</code>. |
| */ |
| public class InputStreamToXInputStreamAdapter implements XInputStream { |
| |
| /** |
| * Internal store to the InputStream |
| */ |
| private InputStream iIn; |
| |
| /** |
| * Constructor. |
| * |
| * @param in The <code>XInputStream</code> to be |
| * accessed as an <code>InputStream</code>. |
| */ |
| public InputStreamToXInputStreamAdapter (InputStream in) |
| { |
| iIn = in; |
| } |
| |
| public int available() throws |
| com.sun.star.io.IOException |
| { |
| |
| int bytesAvail; |
| |
| try { |
| bytesAvail = iIn.available(); |
| } catch (IOException e) { |
| throw new com.sun.star.io.IOException(e.toString()); |
| } |
| |
| return(bytesAvail); |
| } |
| |
| public void closeInput() throws |
| com.sun.star.io.IOException |
| { |
| try { |
| iIn.close(); |
| } catch (IOException e) { |
| throw new com.sun.star.io.IOException(e.toString()); |
| } |
| } |
| |
| public int readBytes(byte[][] b, int len) throws |
| com.sun.star.io.IOException |
| { |
| int count = 0; |
| try { |
| long bytesRead=0; |
| if (len >iIn.available()) { |
| bytesRead = iIn.read(b[0], 0, iIn.available()); |
| } |
| else{ |
| bytesRead = iIn.read(b[0], 0, len); |
| } |
| // Casting bytesRead to an int is okay, since the user can |
| // only pass in an integer length to read, so the bytesRead |
| // must <= len. |
| // |
| if (bytesRead <= 0) { |
| return(0); |
| } |
| return ((int)bytesRead); |
| |
| |
| } catch (IOException e) { |
| throw new com.sun.star.io.IOException("reader error: "+e.toString()); |
| } |
| } |
| |
| public int readSomeBytes(byte[][] b, int len) throws |
| com.sun.star.io.IOException |
| { |
| int count = 0; |
| try { |
| long bytesRead=0; |
| if (len >iIn.available()) { |
| bytesRead = iIn.read(b[0], 0, iIn.available()); |
| } |
| else{ |
| bytesRead = iIn.read(b[0], 0, len); |
| } |
| // Casting bytesRead to an int is okay, since the user can |
| // only pass in an integer length to read, so the bytesRead |
| // must <= len. |
| // |
| if (bytesRead <= 0) { |
| return(0); |
| } |
| return ((int)bytesRead); |
| |
| |
| } catch (IOException e) { |
| throw new com.sun.star.io.IOException("reader error: "+e.toString()); |
| } |
| } |
| |
| public void skipBytes(int n) throws |
| com.sun.star.io.IOException |
| { |
| int avail; |
| int tmpLongVal = n; |
| int tmpIntVal; |
| |
| try { |
| avail = iIn.available(); |
| } catch (IOException e) { |
| throw new com.sun.star.io.IOException(e.toString()); |
| } |
| |
| do { |
| if (tmpLongVal >= Integer.MAX_VALUE) { |
| tmpIntVal = Integer.MAX_VALUE; |
| } else { |
| // Casting is safe here. |
| tmpIntVal = (int)tmpLongVal; |
| } |
| tmpLongVal -= tmpIntVal; |
| |
| try { |
| iIn.skip(tmpIntVal); |
| } catch (IOException e) { |
| throw new com.sun.star.io.IOException(e.toString()); |
| } |
| } while (tmpLongVal > 0); |
| } |
| } |
| |