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Diffstat (limited to 'xmerge/source/palmtests/qa/comparator/OfficeZip.java')
| -rw-r--r-- | xmerge/source/palmtests/qa/comparator/OfficeZip.java | 241 |
1 files changed, 241 insertions, 0 deletions
diff --git a/xmerge/source/palmtests/qa/comparator/OfficeZip.java b/xmerge/source/palmtests/qa/comparator/OfficeZip.java new file mode 100644 index 000000000000..496949cf3d17 --- /dev/null +++ b/xmerge/source/palmtests/qa/comparator/OfficeZip.java @@ -0,0 +1,241 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +import java.util.List; +import java.util.ListIterator; +import java.util.LinkedList; +import java.util.zip.ZipInputStream; +import java.util.zip.ZipOutputStream; +import java.util.zip.ZipEntry; +import java.util.zip.CRC32; +import java.io.InputStream; +import java.io.OutputStream; +import java.io.IOException; +import java.io.ByteArrayOutputStream; +import org.openoffice.xmerge.util.Debug; + +/** + * Class used by OfficeDocument to handle zip reading and writing, + * as well as storing zip entries. + * + * @author Herbie Ong + */ + +class OfficeZip { + + /** file name of the xml file in a zipped document. */ + private final static String XMLFILE = "content.xml"; + + private final static int BUFFERSIZE = 1024; + + private List entryList = null; + + private int contentIndex = -1; + + private String filename = null; + + private class Entry { + + ZipEntry zipEntry = null; + byte bytes[] = null; + } + + /** + * Constructor + * + * @param filename Full Path to Zip file to process + * + */ + public OfficeZip(String filename) { + this.filename = filename; + } + + + /** + * Read each zip entry in the given InputStream object + * and store in entryList both the ZipEntry object as well + * as the bits of each entry. Return the bytes for the + * entry of XMLFILE. + * + * @param is InputStream object to read from + * @return byte[] byte array of XML file + * @throws IOException if any I/O error occurs + */ + + byte[] read(InputStream is) throws IOException { + + ZipInputStream zis = new ZipInputStream(is); + ZipEntry ze = null; + int i = -1; + + entryList = new LinkedList(); + + while ((ze = zis.getNextEntry()) != null) { + + String name = ze.getName(); + + Entry entry = new Entry(); + entry.zipEntry = ze; + + Debug.log(Debug.TRACE, "reading entry: " + name); + + ByteArrayOutputStream baos = new ByteArrayOutputStream(); + + int len = 0; + byte bytes[] = new byte[BUFFERSIZE]; + + while ((len = zis.read(bytes)) > 0) { + baos.write(bytes, 0, len); + } + + entry.bytes = baos.toByteArray(); + + entryList.add(entry); + + i++; + + if (isContentXML(name)) { + contentIndex = i; + } + } + + if (contentIndex == -1) { + throw new IOException(XMLFILE + " not found."); + } + + Entry contentEntry = (Entry) entryList.get(contentIndex); + + return contentEntry.bytes; + } + + /** + * Write out the XMLFILE as a zip into the OutputStream object. + * + * If a zip inputstream was previously read, then use + * those zip contents to recreate the zip, except for XMLFILE, + * update it using the new content from xmlBytes. + * + * If there was no zip inputstream previously read, write + * XMLFILE out into the zip outputstream. + * + * @param os OutputStream object to write zip + * @param xmlBytes bytes of XMLFILE + * @throws IOException if any I/O errors occur. + */ + + void write(OutputStream os, byte xmlBytes[]) throws IOException { + + ZipOutputStream zos = new ZipOutputStream(os); + + // if read was not invoked previously, store the bytes directly. + if (contentIndex == -1) { + + Debug.log(Debug.TRACE, "Writing out " + XMLFILE + " into zip."); + + ZipEntry ze = new ZipEntry(XMLFILE); + ze.setSize(xmlBytes.length); + + CRC32 crc = new CRC32(); + crc.reset(); + crc.update(xmlBytes); + ze.setCrc(crc.getValue()); + + ze.setTime(System.currentTimeMillis()); + ze.setMethod(ZipEntry.DEFLATED); + + zos.putNextEntry(ze); + zos.write(xmlBytes); + + } else { + + saveEntries(zos, xmlBytes); + } + + zos.close(); + } + + /** + * Used by write method if there was a zip inputstream + * previously read. It would write out each ZipEntry of + * the previously read zip, except for XMLFILE, it would + * update it with new values and with the content from + * xmlBytes. + * + * @param os OutputStream object to write zip + * @param xmlBytes bytes of XMLFILE + * @throws ZipException if any zip I/O errors occur. + */ + + private void saveEntries(ZipOutputStream zos, byte xmlBytes[]) + throws IOException { + + Debug.log(Debug.TRACE, "Writing out the following entries into zip."); + + ListIterator iterator = entryList.listIterator(); + + while (iterator.hasNext()) { + + Entry entry = (Entry) iterator.next(); + ZipEntry ze = entry.zipEntry; + + String name = ze.getName(); + + Debug.log(Debug.TRACE, "... " + name); + + if (isContentXML(name)) { + + // set new values for this ZipEntry + + ZipEntry zipEntry = new ZipEntry(name); + + zipEntry.setMethod(ze.getMethod()); + zipEntry.setSize(xmlBytes.length); + + CRC32 crc = new CRC32(); + crc.reset(); + crc.update(xmlBytes); + zipEntry.setCrc(crc.getValue()); + + zipEntry.setTime(System.currentTimeMillis()); + + zos.putNextEntry(zipEntry); + zos.write(xmlBytes); + + } else { + + zos.putNextEntry(ze); + zos.write(entry.bytes); + } + } + } + + private boolean isContentXML(String name) { + + String lname = name.toLowerCase(); + return lname.equals(XMLFILE); + } +} |