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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">com.ibm.dtfj.utils.file</a></div>
<h2 title="Class FileSniffer" class="title">Class FileSniffer</h2>
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<pre>public class <span class="typeNameLabel">FileSniffer</span>
extends <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">Object</a></pre>
<div class="block">Sniffs files attempting to determine the contents, typically from known
magic numbers/values.</div>
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<td class="colFirst"><code>static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="FileSniffer.CoreFormatType.html" title="enum in com.ibm.dtfj.utils.file">FileSniffer.CoreFormatType</a></span></code></th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">FileSniffer</a></span>()</code></th>
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<td class="colFirst"><code>static <a href="FileSniffer.CoreFormatType.html" title="enum in com.ibm.dtfj.utils.file">FileSniffer.CoreFormatType</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCoreFormat(javax.imageio.stream.ImageInputStream)">getCoreFormat</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/imageio/stream/ImageInputStream.html?is-external=true" title="class or interface in javax.imageio.stream" class="externalLink" target="_blank">ImageInputStream</a>&nbsp;iis)</code></th>
<td class="colLast">
<div class="block">Determine the format of the core file.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isCoreFile(java.io.InputStream,long)">isCoreFile</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">InputStream</a>&nbsp;in,
long&nbsp;filesize)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isCoreFile(javax.imageio.stream.ImageInputStream,long)">isCoreFile</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/imageio/stream/ImageInputStream.html?is-external=true" title="class or interface in javax.imageio.stream" class="externalLink" target="_blank">ImageInputStream</a>&nbsp;iis,
long&nbsp;filesize)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isJavaCoreFile(java.io.InputStream,long)">isJavaCoreFile</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">InputStream</a>&nbsp;in,
long&nbsp;filesize)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isJavaCoreFile(javax.imageio.stream.ImageInputStream,long)">isJavaCoreFile</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/imageio/stream/ImageInputStream.html?is-external=true" title="class or interface in javax.imageio.stream" class="externalLink" target="_blank">ImageInputStream</a>&nbsp;iis,
long&nbsp;filesize)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isPHDFile(java.io.InputStream,long)">isPHDFile</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">InputStream</a>&nbsp;in,
long&nbsp;filesize)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isPHDFile(javax.imageio.stream.ImageInputStream,long)">isPHDFile</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/imageio/stream/ImageInputStream.html?is-external=true" title="class or interface in javax.imageio.stream" class="externalLink" target="_blank">ImageInputStream</a>&nbsp;iis,
long&nbsp;filesize)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isZipFile(java.io.File)">isZipFile</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/File.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">File</a>&nbsp;file)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isZipFile(javax.imageio.stream.ImageInputStream)">isZipFile</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/imageio/stream/ImageInputStream.html?is-external=true" title="class or interface in javax.imageio.stream" class="externalLink" target="_blank">ImageInputStream</a>&nbsp;iis)</code></th>
<td class="colLast">
<div class="block">Checks to see if the input stream is for a zip file, assumes that the stream is correctly positioned.</div>
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<h3>Methods declared in class&nbsp;java.lang.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">Object</a></h3>
<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang" class="externalLink" target="_blank">clone</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink" target="_blank">equals</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink" target="_blank">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink" target="_blank">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang" class="externalLink" target="_blank">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink" target="_blank">notify</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink" target="_blank">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink" target="_blank">toString</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink" target="_blank">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink" target="_blank">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink" target="_blank">wait</a></code></li>
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<h4>FileSniffer</h4>
<pre>public&nbsp;FileSniffer()</pre>
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<h4>getCoreFormat</h4>
<pre class="methodSignature">public static&nbsp;<a href="FileSniffer.CoreFormatType.html" title="enum in com.ibm.dtfj.utils.file">FileSniffer.CoreFormatType</a>&nbsp;getCoreFormat&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/imageio/stream/ImageInputStream.html?is-external=true" title="class or interface in javax.imageio.stream" class="externalLink" target="_blank">ImageInputStream</a>&nbsp;iis)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></pre>
<div class="block">Determine the format of the core file.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>iis</code> - stream to the core file</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>format</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></code> - re-thrown</dd>
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<pre class="methodSignature">public static&nbsp;boolean&nbsp;isCoreFile&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">InputStream</a>&nbsp;in,
long&nbsp;filesize)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></code></dd>
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<pre class="methodSignature">public static&nbsp;boolean&nbsp;isCoreFile&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/imageio/stream/ImageInputStream.html?is-external=true" title="class or interface in javax.imageio.stream" class="externalLink" target="_blank">ImageInputStream</a>&nbsp;iis,
long&nbsp;filesize)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></code></dd>
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<pre class="methodSignature">public static&nbsp;boolean&nbsp;isJavaCoreFile&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">InputStream</a>&nbsp;in,
long&nbsp;filesize)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></code></dd>
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<pre class="methodSignature">public static&nbsp;boolean&nbsp;isJavaCoreFile&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/imageio/stream/ImageInputStream.html?is-external=true" title="class or interface in javax.imageio.stream" class="externalLink" target="_blank">ImageInputStream</a>&nbsp;iis,
long&nbsp;filesize)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></code></dd>
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<pre class="methodSignature">public static&nbsp;boolean&nbsp;isPHDFile&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">InputStream</a>&nbsp;in,
long&nbsp;filesize)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></code></dd>
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<pre class="methodSignature">public static&nbsp;boolean&nbsp;isPHDFile&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/imageio/stream/ImageInputStream.html?is-external=true" title="class or interface in javax.imageio.stream" class="externalLink" target="_blank">ImageInputStream</a>&nbsp;iis,
long&nbsp;filesize)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></pre>
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<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></code></dd>
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<h4>isZipFile</h4>
<pre class="methodSignature">public static&nbsp;boolean&nbsp;isZipFile&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/imageio/stream/ImageInputStream.html?is-external=true" title="class or interface in javax.imageio.stream" class="externalLink" target="_blank">ImageInputStream</a>&nbsp;iis)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></pre>
<div class="block">Checks to see if the input stream is for a zip file, assumes that the stream is correctly positioned.
This method will reset the stream if possible to it's starting position. The reason for using this
method over just trying java.util.zip.ZipFile(File) and catching errors is that on some platforms
the zip support is provided by native libraries. It is possible to cause the native library to
crash when speculatively passing files into it.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>in</code> - stream to analyze</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if it is a zip file</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></code></dd>
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<h4>isZipFile</h4>
<pre class="methodSignature">public static&nbsp;boolean&nbsp;isZipFile&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/File.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">File</a>&nbsp;file)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink" target="_blank">IOException</a></code></dd>
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