001: /*
002: * $Id: RtfDiskCache.java 1555 2005-02-02 18:09:32Z hallm $
003: * $Name$
004: *
005: * Copyright 2005 by Mark Hall
006: *
007: * The contents of this file are subject to the Mozilla Public License Version 1.1
008: * (the "License"); you may not use this file except in compliance with the License.
009: * You may obtain a copy of the License at http://www.mozilla.org/MPL/
010: *
011: * Software distributed under the License is distributed on an "AS IS" basis,
012: * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
013: * for the specific language governing rights and limitations under the License.
014: *
015: * The Original Code is 'iText, a free JAVA-PDF library'.
016: *
017: * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
018: * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
019: * All Rights Reserved.
020: * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
021: * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
022: *
023: * Contributor(s): all the names of the contributors are added in the source code
024: * where applicable.
025: *
026: * Alternatively, the contents of this file may be used under the terms of the
027: * LGPL license (the ?GNU LIBRARY GENERAL PUBLIC LICENSE?), in which case the
028: * provisions of LGPL are applicable instead of those above. If you wish to
029: * allow use of your version of this file only under the terms of the LGPL
030: * License and not to allow others to use your version of this file under
031: * the MPL, indicate your decision by deleting the provisions above and
032: * replace them with the notice and other provisions required by the LGPL.
033: * If you do not delete the provisions above, a recipient may use your version
034: * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
035: *
036: * This library is free software; you can redistribute it and/or modify it
037: * under the terms of the MPL as stated above or under the terms of the GNU
038: * Library General Public License as published by the Free Software Foundation;
039: * either version 2 of the License, or any later version.
040: *
041: * This library is distributed in the hope that it will be useful, but WITHOUT
042: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
043: * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
044: * details.
045: *
046: * If you didn't download this code from the following link, you should check if
047: * you aren't using an obsolete version:
048: * http://www.lowagie.com/iText/
049: */
050:
051: package com.lowagie.text.rtf.document.output;
052:
053: import java.io.BufferedInputStream;
054: import java.io.BufferedOutputStream;
055: import java.io.File;
056: import java.io.FileInputStream;
057: import java.io.FileOutputStream;
058: import java.io.IOException;
059: import java.io.OutputStream;
060:
061: /**
062: * The RtfFileCache is a RtfDataCache that uses a temporary file
063: * to store the rtf document data. Not so fast, but doesn't use any
064: * memory (just disk space).
065: *
066: * @version $Revision: 1555 $
067: * @author Mark Hall (mhall@edu.uni-klu.ac.at)
068: */
069: public class RtfDiskCache implements RtfDataCache {
070:
071: /**
072: * The BufferedOutputStream that stores the cache data.
073: */
074: private BufferedOutputStream data = null;
075: /**
076: * The temporary file to store the data in.
077: */
078: private File tempFile = null;
079:
080: /**
081: * Constructs a RtfFileCache. Creates the temp file.
082: *
083: * @throws IOException If the temporary file could not be created.
084: */
085: public RtfDiskCache() throws IOException {
086: this .tempFile = File.createTempFile("iText", null);
087: this .data = new BufferedOutputStream(new FileOutputStream(
088: tempFile));
089: }
090:
091: /**
092: * Gets the BufferedOutputStream to write to.
093: */
094: public OutputStream getOutputStream() {
095: return this .data;
096: }
097:
098: /**
099: * Writes the content of the temporary file into the OutputStream.
100: */
101: public void writeTo(OutputStream target) throws IOException {
102: this .data.close();
103: BufferedInputStream tempIn = new BufferedInputStream(
104: new FileInputStream(this .tempFile));
105: byte[] buffer = new byte[8192];
106: int bytesRead = -1;
107: while ((bytesRead = tempIn.read(buffer)) >= 0) {
108: target.write(buffer, 0, bytesRead);
109: }
110: tempIn.close();
111: this.tempFile.delete();
112: }
113:
114: }
|