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praktikum-holons


			
				
					
						
						
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<div class="subTitle">org.apache.commons.compress.archivers.zip</div>
<h2 title="Interface ZipEncoding" class="title">Interface ZipEncoding</h2>
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<pre>public interface <a href="../../../../../../src-html/org/apache/commons/compress/archivers/zip/ZipEncoding.html#line.44">ZipEncoding</a></pre>
<div class="block">An interface for encoders that do a pretty encoding of ZIP
 filenames.

 <p>There are mostly two implementations, one that uses java.nio
 <a href="http://docs.oracle.com/javase/7/docs/api/java/nio/charset/Charset.html?is-external=true" title="class or interface in java.nio.charset"><code>Charset</code></a> and one implementation,
 which copes with simple 8 bit charsets, because java-1.4 did not
 support Cp437 in java.nio.</p>
 
 <p>The main reason for defining an own encoding layer comes from
 the problems with <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true#getBytes(java.lang.String)" title="class or interface in java.lang"><code>String.getBytes</code></a>, which encodes unknown characters as ASCII
 quotation marks ('?'). Quotation marks are per definition an
 invalid filename on some operating systems  like Windows, which
 leads to ignored ZIP entries.</p>
 
 <p>All implementations should implement this interface in a
 reentrant way.</p></div>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/compress/archivers/zip/ZipEncoding.html#canEncode(java.lang.String)">canEncode</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;name)</code>
<div class="block">Check, whether the given string may be losslessly encoded using this
 encoding.</div>
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<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/compress/archivers/zip/ZipEncoding.html#decode(byte[])">decode</a></strong>(byte[]&nbsp;data)</code>&nbsp;</td>
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<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/compress/archivers/zip/ZipEncoding.html#encode(java.lang.String)">encode</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;name)</code>
<div class="block">Encode a filename or a comment to a byte array suitable for
 storing it to a serialized zip entry.</div>
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<h4>canEncode</h4>
<pre>boolean&nbsp;<a href="../../../../../../src-html/org/apache/commons/compress/archivers/zip/ZipEncoding.html#line.52">canEncode</a>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;name)</pre>
<div class="block">Check, whether the given string may be losslessly encoded using this
 encoding.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>name</code> - A filename or ZIP comment.</dd>
<dt><span class="strong">Returns:</span></dt><dd>Whether the given name may be encoded with out any losses.</dd></dl>
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<h4>encode</h4>
<pre><a href="http://docs.oracle.com/javase/7/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a>&nbsp;<a href="../../../../../../src-html/org/apache/commons/compress/archivers/zip/ZipEncoding.html#line.76">encode</a>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;name)
                  throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Encode a filename or a comment to a byte array suitable for
 storing it to a serialized zip entry.
 
 <p>Examples for CP 437 (in pseudo-notation, right hand side is
 C-style notation):</p>
 <pre>
  encode("?_for_Dollar.txt") = "%U20AC_for_Dollar.txt"
  encode("Ölfässer.txt") = "\231lf\204sser.txt"
 </pre></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>name</code> - A filename or ZIP comment.</dd>
<dt><span class="strong">Returns:</span></dt><dd>A byte buffer with a backing array containing the
         encoded name.  Unmappable characters or malformed
         character sequences are mapped to a sequence of utf-16
         words encoded in the format <code>%Uxxxx</code>.  It is
         assumed, that the byte buffer is positioned at the
         beginning of the encoded result, the byte buffer has a
         backing array and the limit of the byte buffer points
         to the end of the encoded result.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - on error</dd></dl>
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<h4>decode</h4>
<pre><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;<a href="../../../../../../src-html/org/apache/commons/compress/archivers/zip/ZipEncoding.html#line.83">decode</a>(byte[]&nbsp;data)
              throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>data</code> - The byte values to decode.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The decoded string.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - on error</dd></dl>
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