diff options
Diffstat (limited to 'ridljar/com/sun/star/lib/uno/adapter/XInputStreamToInputStreamAdapter.java')
| -rw-r--r-- | ridljar/com/sun/star/lib/uno/adapter/XInputStreamToInputStreamAdapter.java | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/ridljar/com/sun/star/lib/uno/adapter/XInputStreamToInputStreamAdapter.java b/ridljar/com/sun/star/lib/uno/adapter/XInputStreamToInputStreamAdapter.java new file mode 100644 index 000000000..25f1798fb --- /dev/null +++ b/ridljar/com/sun/star/lib/uno/adapter/XInputStreamToInputStreamAdapter.java @@ -0,0 +1,218 @@ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * 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 . + */ +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>. + */ +public final class XInputStreamToInputStreamAdapter extends InputStream { + + /** + * Internal handle to the XInputStream + */ + private final XInputStream xin; + + /** + * Constructor. + * + * @param in The <code>XInputStream</code> to be + * accessed as an <code>InputStream</code>. + */ + public XInputStreamToInputStreamAdapter (XInputStream in) { + xin = in; + } + + @Override + public int available() throws IOException { + + int bytesAvail; + + try { + bytesAvail = xin.available(); + } catch (Exception e) { + IOException newEx = new IOException(e.getMessage()); + newEx.initCause(e); + throw newEx; + } + + return bytesAvail; + } + + @Override + public void close() throws IOException { + try { + xin.closeInput(); + } catch (Exception e) { + IOException newEx = new IOException(e.getMessage()); + newEx.initCause(e); + throw newEx; + } + } + + @Override + 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) { + IOException newEx = new IOException(e.getMessage()); + newEx.initCause(e); + throw newEx; + } + } + + @Override + 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) { + IOException newEx = new IOException(e.getMessage()); + newEx.initCause(e); + throw newEx; + } + + return bytesRead; + } + + @Override + public int read(byte[] b, int off, int len) throws IOException { + byte [][] tmp = new byte [1][b.length]; + try { + long bytesRead; + 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) { + IOException newEx = new IOException(e.getMessage()); + newEx.initCause(e); + throw newEx; + } + } + + @Override + public long skip(long n) throws IOException { + + int avail; + long tmpLongVal = n; + int tmpIntVal; + + try { + avail = xin.available(); + } catch (Exception e) { + IOException newEx = new IOException(e.getMessage()); + newEx.initCause(e); + throw newEx; + } + + 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) { + IOException newEx = new IOException(e.getMessage()); + newEx.initCause(e); + throw newEx; + } + } 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. + * + * @return false + */ + @Override + public boolean markSupported() { + return false; + } + + @Override + public synchronized void mark(int readlimit) { + // Not supported. + } + + @Override + public synchronized void reset() throws IOException { + // Not supported. + } +} + |