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- <h2 title="Class ZipUtil" class="title">Class ZipUtil</h2>
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- <pre>public abstract class <a href="../../../../../../src-html/org/apache/commons/compress/archivers/zip/ZipUtil.html#line.31">ZipUtil</a>
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- <div class="block">Utility class for handling DOS and Java time conversions.</div>
- <dl><dt><span class="strong">This class is immutable</span></dt>
- <dd></dd></dl>
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- <tr class="altColor">
- <td class="colOne"><code><strong><a href="../../../../../../org/apache/commons/compress/archivers/zip/ZipUtil.html#ZipUtil()">ZipUtil</a></strong>()</code> </td>
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- <td class="colFirst"><code>static long</code></td>
- <td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/compress/archivers/zip/ZipUtil.html#adjustToLong(int)">adjustToLong</a></strong>(int i)</code>
- <div class="block">Assumes a negative integer really is a positive integer that
- has wrapped around and re-creates the original value.</div>
- </td>
- </tr>
- <tr class="rowColor">
- <td class="colFirst"><code>static long</code></td>
- <td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/compress/archivers/zip/ZipUtil.html#dosToJavaTime(long)">dosToJavaTime</a></strong>(long dosTime)</code>
- <div class="block">Converts DOS time to Java time (number of milliseconds since
- epoch).</div>
- </td>
- </tr>
- <tr class="altColor">
- <td class="colFirst"><code>static <a href="http://docs.oracle.com/javase/7/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</a></code></td>
- <td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/compress/archivers/zip/ZipUtil.html#fromDosTime(org.apache.commons.compress.archivers.zip.ZipLong)">fromDosTime</a></strong>(<a href="../../../../../../org/apache/commons/compress/archivers/zip/ZipLong.html" title="class in org.apache.commons.compress.archivers.zip">ZipLong</a> zipDosTime)</code>
- <div class="block">Convert a DOS date/time field to a Date object.</div>
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- </tr>
- <tr class="rowColor">
- <td class="colFirst"><code>static byte[]</code></td>
- <td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/compress/archivers/zip/ZipUtil.html#reverse(byte[])">reverse</a></strong>(byte[] array)</code>
- <div class="block">Reverses a byte[] array.</div>
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- <tr class="altColor">
- <td class="colFirst"><code>static int</code></td>
- <td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/compress/archivers/zip/ZipUtil.html#signedByteToUnsignedInt(byte)">signedByteToUnsignedInt</a></strong>(byte b)</code>
- <div class="block">Converts a signed byte into an unsigned integer representation
- (e.g., -1 becomes 255).</div>
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- <td class="colFirst"><code>static <a href="../../../../../../org/apache/commons/compress/archivers/zip/ZipLong.html" title="class in org.apache.commons.compress.archivers.zip">ZipLong</a></code></td>
- <td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/compress/archivers/zip/ZipUtil.html#toDosTime(java.util.Date)">toDosTime</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</a> time)</code>
- <div class="block">Convert a Date object to a DOS date/time field.</div>
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- <td class="colFirst"><code>static byte[]</code></td>
- <td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/compress/archivers/zip/ZipUtil.html#toDosTime(long)">toDosTime</a></strong>(long t)</code>
- <div class="block">Convert a Date object to a DOS date/time field.</div>
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- <td class="colFirst"><code>static void</code></td>
- <td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/compress/archivers/zip/ZipUtil.html#toDosTime(long,%20byte[],%20int)">toDosTime</a></strong>(long t,
- byte[] buf,
- int offset)</code>
- <div class="block">Convert a Date object to a DOS date/time field.</div>
- </td>
- </tr>
- <tr class="altColor">
- <td class="colFirst"><code>static byte</code></td>
- <td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/compress/archivers/zip/ZipUtil.html#unsignedIntToSignedByte(int)">unsignedIntToSignedByte</a></strong>(int i)</code>
- <div class="block">Converts an unsigned integer to a signed byte (e.g., 255 becomes -1).</div>
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- <pre>public <a href="../../../../../../src-html/org/apache/commons/compress/archivers/zip/ZipUtil.html#line.31">ZipUtil</a>()</pre>
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- <div class="block">Convert a Date object to a DOS date/time field.</div>
- <dl><dt><span class="strong">Parameters:</span></dt><dd><code>time</code> - the <code>Date</code> to convert</dd>
- <dt><span class="strong">Returns:</span></dt><dd>the date as a <code>ZipLong</code></dd></dl>
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- <div class="block">Convert a Date object to a DOS date/time field.
- <p>Stolen from InfoZip's <code>fileio.c</code></p></div>
- <dl><dt><span class="strong">Parameters:</span></dt><dd><code>t</code> - number of milliseconds since the epoch</dd>
- <dt><span class="strong">Returns:</span></dt><dd>the date as a byte array</dd></dl>
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- <pre>public static void <a href="../../../../../../src-html/org/apache/commons/compress/archivers/zip/ZipUtil.html#line.69">toDosTime</a>(long t,
- byte[] buf,
- int offset)</pre>
- <div class="block">Convert a Date object to a DOS date/time field.
- <p>Stolen from InfoZip's <code>fileio.c</code></p></div>
- <dl><dt><span class="strong">Parameters:</span></dt><dd><code>t</code> - number of milliseconds since the epoch</dd><dd><code>buf</code> - the output buffer</dd><dd><code>offset</code> - The offset within the output buffer of the first byte to be written.
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- <pre>public static long <a href="../../../../../../src-html/org/apache/commons/compress/archivers/zip/ZipUtil.html#line.99">adjustToLong</a>(int i)</pre>
- <div class="block">Assumes a negative integer really is a positive integer that
- has wrapped around and re-creates the original value.</div>
- <dl><dt><span class="strong">Parameters:</span></dt><dd><code>i</code> - the value to treat as unsigned int.</dd>
- <dt><span class="strong">Returns:</span></dt><dd>the unsigned int as a long.</dd></dl>
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- <pre>public static byte[] <a href="../../../../../../src-html/org/apache/commons/compress/archivers/zip/ZipUtil.html#line.117">reverse</a>(byte[] array)</pre>
- <div class="block">Reverses a byte[] array. Reverses in-place (thus provided array is
- mutated), but also returns same for convenience.</div>
- <dl><dt><span class="strong">Parameters:</span></dt><dd><code>array</code> - to reverse (mutated in-place, but also returned for
- convenience).</dd>
- <dt><span class="strong">Returns:</span></dt><dd>the reversed array (mutated in-place, but also returned for
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- <div class="block">Converts a signed byte into an unsigned integer representation
- (e.g., -1 becomes 255).</div>
- <dl><dt><span class="strong">Parameters:</span></dt><dd><code>b</code> - byte to convert to int</dd>
- <dt><span class="strong">Returns:</span></dt><dd>int representation of the provided byte</dd><dt><span class="strong">Since:</span></dt>
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- <pre>public static byte <a href="../../../../../../src-html/org/apache/commons/compress/archivers/zip/ZipUtil.html#line.186">unsignedIntToSignedByte</a>(int i)</pre>
- <div class="block">Converts an unsigned integer to a signed byte (e.g., 255 becomes -1).</div>
- <dl><dt><span class="strong">Parameters:</span></dt><dd><code>i</code> - integer to convert to byte</dd>
- <dt><span class="strong">Returns:</span></dt><dd>byte representation of the provided int</dd>
- <dt><span class="strong">Throws:</span></dt>
- <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if the provided integer is not inside the range [0,255].</dd><dt><span class="strong">Since:</span></dt>
- <dd>1.5</dd></dl>
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- <pre>public static <a href="http://docs.oracle.com/javase/7/docs/api/java/util/Date.html?is-external=true" title="class or interface in java.util">Date</a> <a href="../../../../../../src-html/org/apache/commons/compress/archivers/zip/ZipUtil.html#line.202">fromDosTime</a>(<a href="../../../../../../org/apache/commons/compress/archivers/zip/ZipLong.html" title="class in org.apache.commons.compress.archivers.zip">ZipLong</a> zipDosTime)</pre>
- <div class="block">Convert a DOS date/time field to a Date object.</div>
- <dl><dt><span class="strong">Parameters:</span></dt><dd><code>zipDosTime</code> - contains the stored DOS time.</dd>
- <dt><span class="strong">Returns:</span></dt><dd>a Date instance corresponding to the given time.</dd></dl>
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- <h4>dosToJavaTime</h4>
- <pre>public static long <a href="../../../../../../src-html/org/apache/commons/compress/archivers/zip/ZipUtil.html#line.213">dosToJavaTime</a>(long dosTime)</pre>
- <div class="block">Converts DOS time to Java time (number of milliseconds since
- epoch).</div>
- <dl><dt><span class="strong">Parameters:</span></dt><dd><code>dosTime</code> - time to convert</dd>
- <dt><span class="strong">Returns:</span></dt><dd>converted time</dd></dl>
- </li>
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