44f4c68801
git-svn-id: svn://svn.code.sf.net/p/writer2latex/code/trunk@272 f0f2a975-2e09-46c8-9428-3b39399b9f3c
83 lines
2.6 KiB
Java
83 lines
2.6 KiB
Java
/************************************************************************
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*
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* SimpleZipReader.java
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*
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* Copyright: 2002-2012 by Henrik Just
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*
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* This file is part of Writer2LaTeX.
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*
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* Writer2LaTeX is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Writer2LaTeX is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Writer2LaTeX. If not, see <http://www.gnu.org/licenses/>.
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*
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* Version 1.4 (2012-03-27)
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*
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*/
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package writer2latex.util;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipInputStream;
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public class SimpleZipReader {
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private final static int BUFFERSIZE = 1024;
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private Map<String,byte[]> entries = new HashMap<String,byte[]>();
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/** Read a zipped stream
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*
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* @param is <code>InputStream</code> to read
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*
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* @throws IOException if an I/O error occurs
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*/
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public void read(InputStream is) throws IOException {
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ZipInputStream zis = new ZipInputStream(is);
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ZipEntry entry = null;
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while ((entry=zis.getNextEntry())!=null) {
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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int nLen = 0;
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byte buffer[] = new byte[BUFFERSIZE];
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while ((nLen = zis.read(buffer)) > 0) {
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baos.write(buffer, 0, nLen);
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}
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byte bytes[] = baos.toByteArray();
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entries.put(entry.getName(), bytes);
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}
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zis.close();
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}
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/** Get an entry from the ZIP file. Getting should be taken quite literally here:
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* You can only get an entry once: The <code>SimpleZipReader</code> removes the entry from the
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* collection when this method is called (memory optimization).
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*
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* @param sName the name (path) of the ZIP entry
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*
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* @return a byte array with the contents of the entry, or null if the entry does not exist
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*/
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public byte[] getEntry(String sName) {
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if (entries.containsKey(sName)) {
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byte[] bytes = entries.get(sName);
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entries.remove(sName);
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return bytes;
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}
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return null;
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}
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}
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