| /************************************************************** |
| * |
| * 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>XInputStreamToInputStreamAdapter</code> wraps |
| * the UNO <code>XInputStream</code> object in a Java |
| * <code>InputStream</code>. This allows users to access |
| * an <code>XInputStream</code> as if it were an |
| * <code>InputStream</code>. |
| * |
| * @author Brian Cameron |
| */ |
| public class XInputStreamToInputStreamAdapter extends InputStream { |
| |
| /** |
| * Internal handle to the XInputStream |
| */ |
| private XInputStream xin; |
| |
| /** |
| * Constructor. |
| * |
| * @param in The <code>XInputStream</code> to be |
| * accessed as an <code>InputStream</code>. |
| */ |
| public XInputStreamToInputStreamAdapter (XInputStream in) { |
| xin = in; |
| } |
| |
| public int available() throws IOException { |
| |
| int bytesAvail; |
| |
| try { |
| bytesAvail = xin.available(); |
| } catch (Exception e) { |
| throw new IOException(e.toString()); |
| } |
| |
| return(bytesAvail); |
| } |
| |
| public void close() throws IOException { |
| try { |
| xin.closeInput(); |
| } catch (Exception e) { |
| throw new IOException(e.toString()); |
| } |
| } |
| |
| public int read () throws IOException { |
| byte [][] tmp = new byte [1][1]; |
| try { |
| long bytesRead = xin.readBytes(tmp, 1); |
| |
| if (bytesRead <= 0) { |
| return (-1); |
| } else { |
| int tmpInt = tmp[0][0]; |
| if (tmpInt< 0 ){ |
| tmpInt = 256 +tmpInt; |
| } |
| return(tmpInt); |
| } |
| |
| } catch (Exception e) { |
| throw new IOException(e.toString()); |
| } |
| } |
| |
| public int read (byte[] b) throws IOException { |
| |
| byte [][] tmp = new byte [1][b.length]; |
| int bytesRead; |
| |
| try { |
| bytesRead = xin.readBytes(tmp, b.length); |
| if (bytesRead <= 0) { |
| return(-1); |
| } else if (bytesRead < b.length) { |
| System.arraycopy(tmp[0], 0, b, 0, bytesRead); |
| } else { |
| System.arraycopy(tmp[0], 0, b, 0, b.length); |
| } |
| } catch (Exception e) { |
| throw new IOException(e.toString()); |
| } |
| |
| return (bytesRead); |
| } |
| |
| public int read(byte[] b, int off, int len) throws IOException { |
| int count = 0; |
| byte [][] tmp = new byte [1][b.length]; |
| try { |
| long bytesRead=0; |
| int av = xin.available(); |
| if ( av != 0 && len > av) { |
| bytesRead = xin.readBytes(tmp, av); |
| } |
| else{ |
| bytesRead = xin.readBytes(tmp,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(-1); |
| } else if (bytesRead < len) { |
| System.arraycopy(tmp[0], 0, b, off, (int)bytesRead); |
| } else { |
| System.arraycopy(tmp[0], 0, b, off, len); |
| } |
| |
| return ((int)bytesRead); |
| |
| |
| } catch (Exception e) { |
| throw new IOException("reader error: "+e.toString()); |
| } |
| } |
| |
| public long skip(long n) throws IOException { |
| |
| int avail; |
| long tmpLongVal = n; |
| int tmpIntVal; |
| |
| try { |
| avail = xin.available(); |
| } catch (Exception e) { |
| throw new IOException(e.toString()); |
| } |
| |
| do { |
| if (tmpLongVal >= Integer.MAX_VALUE) { |
| tmpIntVal = Integer.MAX_VALUE; |
| } else { |
| // Casting is safe here. |
| tmpIntVal = (int)tmpLongVal; |
| } |
| tmpLongVal -= tmpIntVal; |
| |
| try { |
| xin.skipBytes(tmpIntVal); |
| } catch (Exception e) { |
| throw new IOException(e.toString()); |
| } |
| } while (tmpLongVal > 0); |
| |
| if ( avail != 0 && avail < n) { |
| return(avail); |
| } else { |
| return(n); |
| } |
| } |
| |
| /** |
| * Tests if this input stream supports the mark and reset methods. |
| * The markSupported method of |
| * <code>XInputStreamToInputStreamAdapter</code> returns false. |
| * |
| * @returns false |
| */ |
| public boolean markSupported() { |
| return false; |
| } |
| |
| public void mark(int readlimit) { |
| // Not supported. |
| } |
| |
| public void reset() throws IOException { |
| // Not supported. |
| } |
| } |
| |