mirror of https://github.com/apache/maven.git
update to version from plexus-utils
git-svn-id: https://svn.apache.org/repos/asf/maven/components/trunk@163930 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Brett Leslie Porter
parent
3cefcd54f9
commit
a1b93338e5
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@ -1,25 +1,147 @@
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package util;
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/*
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* Copyright 2001-2005 The Apache Software Foundation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import java.io.BufferedInputStream;
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import java.io.BufferedOutputStream;
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import java.io.ByteArrayInputStream;
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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.io.InputStreamReader;
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import java.io.OutputStream;
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import java.io.OutputStreamWriter;
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import java.io.Reader;
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import java.io.StringReader;
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import java.io.StringWriter;
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import java.io.Writer;
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/**
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* General IO Stream manipulation.
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* <p/>
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* This class provides static utility methods for input/output operations, particularly buffered
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* copying between sources (<code>InputStream</code>, <code>Reader</code>, <code>String</code> and
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* <code>byte[]</code>) and destinations (<code>OutputStream</code>, <code>Writer</code>,
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* <code>String</code> and <code>byte[]</code>).
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* </p>
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* <p/>
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* <p>Unless otherwise noted, these <code>copy</code> methods do <em>not</em> flush or close the
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* streams. Often, doing so would require making non-portable assumptions about the streams' origin
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* and further use. This means that both streams' <code>close()</code> methods must be called after
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* copying. if one omits this step, then the stream resources (sockets, file descriptors) are
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* released when the associated Stream is garbage-collected. It is not a good idea to rely on this
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* mechanism. For a good overview of the distinction between "memory management" and "resource
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* management", see <a href="http://www.unixreview.com/articles/1998/9804/9804ja/ja.htm">this
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* UnixReview article</a></p>
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* <p/>
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* <p>For each <code>copy</code> method, a variant is provided that allows the caller to specify the
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* buffer size (the default is 4k). As the buffer size can have a fairly large impact on speed, this
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* may be worth tweaking. Often "large buffer -> faster" does not hold, even for large data
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* transfers.</p>
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* <p/>
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* <p>For byte-to-char methods, a <code>copy</code> variant allows the encoding to be selected
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* (otherwise the platform default is used).</p>
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* <p/>
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* <p>The <code>copy</code> methods use an internal buffer when copying. It is therefore advisable
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* <em>not</em> to deliberately wrap the stream arguments to the <code>copy</code> methods in
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* <code>Buffered*</code> streams. For example, don't do the
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* following:</p>
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* <p/>
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* <code>copy( new BufferedInputStream( in ), new BufferedOutputStream( out ) );</code>
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* <p/>
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* <p>The rationale is as follows:</p>
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* <p/>
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* <p>Imagine that an InputStream's read() is a very expensive operation, which would usually suggest
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* wrapping in a BufferedInputStream. The BufferedInputStream works by issuing infrequent
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* {@link java.io.InputStream#read(byte[] b, int off, int len)} requests on the underlying InputStream, to
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* fill an internal buffer, from which further <code>read</code> requests can inexpensively get
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* their data (until the buffer runs out).</p>
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* <p>However, the <code>copy</code> methods do the same thing, keeping an internal buffer,
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* populated by {@link InputStream#read(byte[] b, int off, int len)} requests. Having two buffers
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* (or three if the destination stream is also buffered) is pointless, and the unnecessary buffer
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* management hurts performance slightly (about 3%, according to some simple experiments).</p>
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*
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* @author <a href="mailto:peter@codehaus.org">Peter Donald</a>
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* @author <a href="mailto:jefft@codehaus.org">Jeff Turner</a>
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* @version CVS $Revision$ $Date$
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* @since 4.0
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*/
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/*
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* Behold, intrepid explorers; a map of this class:
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*
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* Method Input Output Dependency
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* ------ ----- ------ -------
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* 1 copy InputStream OutputStream (primitive)
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* 2 copy Reader Writer (primitive)
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*
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* 3 copy InputStream Writer 2
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* 4 toString InputStream String 3
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* 5 toByteArray InputStream byte[] 1
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*
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* 6 copy Reader OutputStream 2
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* 7 toString Reader String 2
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* 8 toByteArray Reader byte[] 6
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*
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* 9 copy String OutputStream 2
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* 10 copy String Writer (trivial)
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* 11 toByteArray String byte[] 9
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*
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* 12 copy byte[] Writer 3
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* 13 toString byte[] String 12
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* 14 copy byte[] OutputStream (trivial)
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*
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*
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* Note that only the first two methods shuffle bytes; the rest use these two, or (if possible) copy
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* using native Java copy methods. As there are method variants to specify buffer size and encoding,
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* each row may correspond to up to 4 methods.
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*
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*/
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public final class IOUtil
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{
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private static final int DEFAULT_BUFFER_SIZE = 1024 * 4;
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/**
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* Private constructor to prevent instantiation.
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*/
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private IOUtil()
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{
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}
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///////////////////////////////////////////////////////////////
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// Core copy methods
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///////////////////////////////////////////////////////////////
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/**
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* Copy bytes from an <code>InputStream</code> to an <code>OutputStream</code>.
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*/
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public static void copy( final InputStream input, final OutputStream output )
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throws IOException
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{
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copy( input, output, DEFAULT_BUFFER_SIZE );
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}
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public static void copy( final InputStream input,
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final OutputStream output,
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final int bufferSize )
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/**
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* Copy bytes from an <code>InputStream</code> to an <code>OutputStream</code>.
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*
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* @param bufferSize Size of internal buffer to use.
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*/
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public static void copy( final InputStream input, final OutputStream output, final int bufferSize )
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throws IOException
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{
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final byte[] buffer = new byte[bufferSize];
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@ -30,6 +152,9 @@ public final class IOUtil
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}
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}
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/**
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* Copy chars from a <code>Reader</code> to a <code>Writer</code>.
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*/
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public static void copy( final Reader input, final Writer output )
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throws IOException
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{
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@ -53,16 +178,605 @@ public final class IOUtil
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output.flush();
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}
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///////////////////////////////////////////////////////////////
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// Derived copy methods
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// InputStream -> *
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///////////////////////////////////////////////////////////////
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///////////////////////////////////////////////////////////////
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// InputStream -> Writer
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/**
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* Copy and convert bytes from an <code>InputStream</code> to chars on a
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* <code>Writer</code>.
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* The platform's default encoding is used for the byte-to-char conversion.
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*/
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public static void copy( final InputStream input, final Writer output )
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throws IOException
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{
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copy( input, output, DEFAULT_BUFFER_SIZE );
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}
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/**
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* Copy and convert bytes from an <code>InputStream</code> to chars on a
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* <code>Writer</code>.
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* The platform's default encoding is used for the byte-to-char conversion.
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*
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* @param bufferSize Size of internal buffer to use.
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*/
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public static void copy( final InputStream input, final Writer output, final int bufferSize )
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throws IOException
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{
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final InputStreamReader in = new InputStreamReader( input );
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copy( in, output, bufferSize );
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}
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/**
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* Copy and convert bytes from an <code>InputStream</code> to chars on a
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* <code>Writer</code>, using the specified encoding.
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*
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* @param encoding The name of a supported character encoding. See the
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* <a href="http://www.iana.org/assignments/character-sets">IANA
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* Charset Registry</a> for a list of valid encoding types.
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*/
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public static void copy( final InputStream input, final Writer output, final String encoding )
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throws IOException
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{
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final InputStreamReader in = new InputStreamReader( input, encoding );
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copy( in, output );
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}
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/**
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* Copy and convert bytes from an <code>InputStream</code> to chars on a
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* <code>Writer</code>, using the specified encoding.
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*
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* @param encoding The name of a supported character encoding. See the
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* <a href="http://www.iana.org/assignments/character-sets">IANA
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* Charset Registry</a> for a list of valid encoding types.
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* @param bufferSize Size of internal buffer to use.
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*/
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public static void copy( final InputStream input, final Writer output, final String encoding, final int bufferSize )
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throws IOException
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{
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final InputStreamReader in = new InputStreamReader( input, encoding );
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copy( in, output, bufferSize );
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}
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///////////////////////////////////////////////////////////////
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// InputStream -> String
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/**
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* Get the contents of an <code>InputStream</code> as a String.
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* The platform's default encoding is used for the byte-to-char conversion.
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*/
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public static String toString( final InputStream input )
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throws IOException
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{
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return toString( input, DEFAULT_BUFFER_SIZE );
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}
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/**
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* Get the contents of an <code>InputStream</code> as a String.
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* The platform's default encoding is used for the byte-to-char conversion.
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*
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* @param bufferSize Size of internal buffer to use.
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*/
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public static String toString( final InputStream input, final int bufferSize )
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throws IOException
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{
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final StringWriter sw = new StringWriter();
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copy( input, sw, bufferSize );
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return sw.toString();
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}
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/**
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* Get the contents of an <code>InputStream</code> as a String.
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*
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* @param encoding The name of a supported character encoding. See the
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* <a href="http://www.iana.org/assignments/character-sets">IANA
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* Charset Registry</a> for a list of valid encoding types.
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*/
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public static String toString( final InputStream input, final String encoding )
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throws IOException
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{
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return toString( input, encoding, DEFAULT_BUFFER_SIZE );
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}
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/**
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* Get the contents of an <code>InputStream</code> as a String.
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*
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* @param encoding The name of a supported character encoding. See the
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* <a href="http://www.iana.org/assignments/character-sets">IANA
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* Charset Registry</a> for a list of valid encoding types.
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* @param bufferSize Size of internal buffer to use.
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*/
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public static String toString( final InputStream input, final String encoding, final int bufferSize )
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throws IOException
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{
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final StringWriter sw = new StringWriter();
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copy( input, sw, encoding, bufferSize );
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return sw.toString();
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}
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///////////////////////////////////////////////////////////////
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// InputStream -> byte[]
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/**
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* Get the contents of an <code>InputStream</code> as a <code>byte[]</code>.
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*/
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public static byte[] toByteArray( final InputStream input )
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throws IOException
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{
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return toByteArray( input, DEFAULT_BUFFER_SIZE );
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}
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/**
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* Get the contents of an <code>InputStream</code> as a <code>byte[]</code>.
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*
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* @param bufferSize Size of internal buffer to use.
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*/
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public static byte[] toByteArray( final InputStream input, final int bufferSize )
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throws IOException
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{
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final ByteArrayOutputStream output = new ByteArrayOutputStream();
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copy( input, output, bufferSize );
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return output.toByteArray();
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}
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///////////////////////////////////////////////////////////////
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// Derived copy methods
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// Reader -> *
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///////////////////////////////////////////////////////////////
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///////////////////////////////////////////////////////////////
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// Reader -> OutputStream
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/**
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* Serialize chars from a <code>Reader</code> to bytes on an <code>OutputStream</code>, and
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* flush the <code>OutputStream</code>.
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*/
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public static void copy( final Reader input, final OutputStream output )
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throws IOException
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{
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copy( input, output, DEFAULT_BUFFER_SIZE );
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}
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/**
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* Serialize chars from a <code>Reader</code> to bytes on an <code>OutputStream</code>, and
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* flush the <code>OutputStream</code>.
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*
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* @param bufferSize Size of internal buffer to use.
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*/
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public static void copy( final Reader input, final OutputStream output, final int bufferSize )
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throws IOException
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{
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final OutputStreamWriter out = new OutputStreamWriter( output );
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copy( input, out, bufferSize );
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// NOTE: Unless anyone is planning on rewriting OutputStreamWriter, we have to flush
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// here.
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out.flush();
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}
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///////////////////////////////////////////////////////////////
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// Reader -> String
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/**
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* Get the contents of a <code>Reader</code> as a String.
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*/
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public static String toString( final Reader input )
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throws IOException
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{
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return toString( input, DEFAULT_BUFFER_SIZE );
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}
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|
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/**
|
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* Get the contents of a <code>Reader</code> as a String.
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*
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* @param bufferSize Size of internal buffer to use.
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*/
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public static String toString( final Reader input, final int bufferSize )
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throws IOException
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{
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final StringWriter sw = new StringWriter();
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copy( input, sw, bufferSize );
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return sw.toString();
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}
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///////////////////////////////////////////////////////////////
|
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// Reader -> byte[]
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/**
|
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* Get the contents of a <code>Reader</code> as a <code>byte[]</code>.
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*/
|
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public static byte[] toByteArray( final Reader input )
|
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throws IOException
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{
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return toByteArray( input, DEFAULT_BUFFER_SIZE );
|
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}
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|
||||
/**
|
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* Get the contents of a <code>Reader</code> as a <code>byte[]</code>.
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*
|
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* @param bufferSize Size of internal buffer to use.
|
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*/
|
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public static byte[] toByteArray( final Reader input, final int bufferSize )
|
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throws IOException
|
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{
|
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ByteArrayOutputStream output = new ByteArrayOutputStream();
|
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copy( input, output, bufferSize );
|
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return output.toByteArray();
|
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}
|
||||
|
||||
|
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///////////////////////////////////////////////////////////////
|
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// Derived copy methods
|
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// String -> *
|
||||
///////////////////////////////////////////////////////////////
|
||||
|
||||
|
||||
///////////////////////////////////////////////////////////////
|
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// String -> OutputStream
|
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|
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/**
|
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* Serialize chars from a <code>String</code> to bytes on an <code>OutputStream</code>, and
|
||||
* flush the <code>OutputStream</code>.
|
||||
*/
|
||||
public static void copy( final String input, final OutputStream output )
|
||||
throws IOException
|
||||
{
|
||||
copy( input, output, DEFAULT_BUFFER_SIZE );
|
||||
}
|
||||
|
||||
/**
|
||||
* Serialize chars from a <code>String</code> to bytes on an <code>OutputStream</code>, and
|
||||
* flush the <code>OutputStream</code>.
|
||||
*
|
||||
* @param bufferSize Size of internal buffer to use.
|
||||
*/
|
||||
public static void copy( final String input, final OutputStream output, final int bufferSize )
|
||||
throws IOException
|
||||
{
|
||||
final StringReader in = new StringReader( input );
|
||||
final OutputStreamWriter out = new OutputStreamWriter( output );
|
||||
copy( in, out, bufferSize );
|
||||
// NOTE: Unless anyone is planning on rewriting OutputStreamWriter, we have to flush
|
||||
// here.
|
||||
out.flush();
|
||||
}
|
||||
|
||||
|
||||
|
||||
///////////////////////////////////////////////////////////////
|
||||
// String -> Writer
|
||||
|
||||
/**
|
||||
* Copy chars from a <code>String</code> to a <code>Writer</code>.
|
||||
*/
|
||||
public static void copy( final String input, final Writer output )
|
||||
throws IOException
|
||||
{
|
||||
output.write( input );
|
||||
}
|
||||
|
||||
/**
|
||||
* Copy bytes from an <code>InputStream</code> to an
|
||||
* <code>OutputStream</code>, with buffering.
|
||||
* This is equivalent to passing a
|
||||
* {@link java.io.BufferedInputStream} and
|
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* {@link java.io.BufferedOutputStream} to {@link #copy(InputStream, OutputStream)},
|
||||
* and flushing the output stream afterwards. The streams are not closed
|
||||
* after the copy.
|
||||
*
|
||||
* @deprecated Buffering streams is actively harmful! See the class description as to why. Use
|
||||
* {@link #copy(InputStream, OutputStream)} instead.
|
||||
*/
|
||||
public static void bufferedCopy( final InputStream input, final OutputStream output )
|
||||
throws IOException
|
||||
{
|
||||
final BufferedInputStream in = new BufferedInputStream( input );
|
||||
final BufferedOutputStream out = new BufferedOutputStream( output );
|
||||
copy( in, out );
|
||||
out.flush();
|
||||
}
|
||||
|
||||
|
||||
///////////////////////////////////////////////////////////////
|
||||
// String -> byte[]
|
||||
/**
|
||||
* Get the contents of a <code>String</code> as a <code>byte[]</code>.
|
||||
*/
|
||||
public static byte[] toByteArray( final String input )
|
||||
throws IOException
|
||||
{
|
||||
return toByteArray( input, DEFAULT_BUFFER_SIZE );
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the contents of a <code>String</code> as a <code>byte[]</code>.
|
||||
*
|
||||
* @param bufferSize Size of internal buffer to use.
|
||||
*/
|
||||
public static byte[] toByteArray( final String input, final int bufferSize )
|
||||
throws IOException
|
||||
{
|
||||
ByteArrayOutputStream output = new ByteArrayOutputStream();
|
||||
copy( input, output, bufferSize );
|
||||
return output.toByteArray();
|
||||
}
|
||||
|
||||
|
||||
|
||||
///////////////////////////////////////////////////////////////
|
||||
// Derived copy methods
|
||||
// byte[] -> *
|
||||
///////////////////////////////////////////////////////////////
|
||||
|
||||
|
||||
///////////////////////////////////////////////////////////////
|
||||
// byte[] -> Writer
|
||||
|
||||
/**
|
||||
* Copy and convert bytes from a <code>byte[]</code> to chars on a
|
||||
* <code>Writer</code>.
|
||||
* The platform's default encoding is used for the byte-to-char conversion.
|
||||
*/
|
||||
public static void copy( final byte[] input, final Writer output )
|
||||
throws IOException
|
||||
{
|
||||
copy( input, output, DEFAULT_BUFFER_SIZE );
|
||||
}
|
||||
|
||||
/**
|
||||
* Copy and convert bytes from a <code>byte[]</code> to chars on a
|
||||
* <code>Writer</code>.
|
||||
* The platform's default encoding is used for the byte-to-char conversion.
|
||||
*
|
||||
* @param bufferSize Size of internal buffer to use.
|
||||
*/
|
||||
public static void copy( final byte[] input, final Writer output, final int bufferSize )
|
||||
throws IOException
|
||||
{
|
||||
final ByteArrayInputStream in = new ByteArrayInputStream( input );
|
||||
copy( in, output, bufferSize );
|
||||
}
|
||||
|
||||
/**
|
||||
* Copy and convert bytes from a <code>byte[]</code> to chars on a
|
||||
* <code>Writer</code>, using the specified encoding.
|
||||
*
|
||||
* @param encoding The name of a supported character encoding. See the
|
||||
* <a href="http://www.iana.org/assignments/character-sets">IANA
|
||||
* Charset Registry</a> for a list of valid encoding types.
|
||||
*/
|
||||
public static void copy( final byte[] input, final Writer output, final String encoding )
|
||||
throws IOException
|
||||
{
|
||||
final ByteArrayInputStream in = new ByteArrayInputStream( input );
|
||||
copy( in, output, encoding );
|
||||
}
|
||||
|
||||
/**
|
||||
* Copy and convert bytes from a <code>byte[]</code> to chars on a
|
||||
* <code>Writer</code>, using the specified encoding.
|
||||
*
|
||||
* @param encoding The name of a supported character encoding. See the
|
||||
* <a href="http://www.iana.org/assignments/character-sets">IANA
|
||||
* Charset Registry</a> for a list of valid encoding types.
|
||||
* @param bufferSize Size of internal buffer to use.
|
||||
*/
|
||||
public static void copy( final byte[] input, final Writer output, final String encoding, final int bufferSize )
|
||||
throws IOException
|
||||
{
|
||||
final ByteArrayInputStream in = new ByteArrayInputStream( input );
|
||||
copy( in, output, encoding, bufferSize );
|
||||
}
|
||||
|
||||
|
||||
///////////////////////////////////////////////////////////////
|
||||
// byte[] -> String
|
||||
|
||||
/**
|
||||
* Get the contents of a <code>byte[]</code> as a String.
|
||||
* The platform's default encoding is used for the byte-to-char conversion.
|
||||
*/
|
||||
public static String toString( final byte[] input )
|
||||
throws IOException
|
||||
{
|
||||
return toString( input, DEFAULT_BUFFER_SIZE );
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the contents of a <code>byte[]</code> as a String.
|
||||
* The platform's default encoding is used for the byte-to-char conversion.
|
||||
*
|
||||
* @param bufferSize Size of internal buffer to use.
|
||||
*/
|
||||
public static String toString( final byte[] input, final int bufferSize )
|
||||
throws IOException
|
||||
{
|
||||
final StringWriter sw = new StringWriter();
|
||||
copy( input, sw, bufferSize );
|
||||
return sw.toString();
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the contents of a <code>byte[]</code> as a String.
|
||||
*
|
||||
* @param encoding The name of a supported character encoding. See the
|
||||
* <a href="http://www.iana.org/assignments/character-sets">IANA
|
||||
* Charset Registry</a> for a list of valid encoding types.
|
||||
*/
|
||||
public static String toString( final byte[] input, final String encoding )
|
||||
throws IOException
|
||||
{
|
||||
return toString( input, encoding, DEFAULT_BUFFER_SIZE );
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the contents of a <code>byte[]</code> as a String.
|
||||
*
|
||||
* @param encoding The name of a supported character encoding. See the
|
||||
* <a href="http://www.iana.org/assignments/character-sets">IANA
|
||||
* Charset Registry</a> for a list of valid encoding types.
|
||||
* @param bufferSize Size of internal buffer to use.
|
||||
*/
|
||||
public static String toString( final byte[] input, final String encoding, final int bufferSize )
|
||||
throws IOException
|
||||
{
|
||||
final StringWriter sw = new StringWriter();
|
||||
copy( input, sw, encoding, bufferSize );
|
||||
return sw.toString();
|
||||
}
|
||||
|
||||
|
||||
///////////////////////////////////////////////////////////////
|
||||
// byte[] -> OutputStream
|
||||
|
||||
/**
|
||||
* Copy bytes from a <code>byte[]</code> to an <code>OutputStream</code>.
|
||||
*/
|
||||
public static void copy( final byte[] input, final OutputStream output )
|
||||
throws IOException
|
||||
{
|
||||
copy( input, output, DEFAULT_BUFFER_SIZE );
|
||||
}
|
||||
|
||||
/**
|
||||
* Copy bytes from a <code>byte[]</code> to an <code>OutputStream</code>.
|
||||
*
|
||||
* @param bufferSize Size of internal buffer to use.
|
||||
*/
|
||||
public static void copy( final byte[] input, final OutputStream output, final int bufferSize )
|
||||
throws IOException
|
||||
{
|
||||
output.write( input );
|
||||
}
|
||||
|
||||
/**
|
||||
* Compare the contents of two Streams to determine if they are equal or not.
|
||||
*
|
||||
* @param input1 the first stream
|
||||
* @param input2 the second stream
|
||||
* @return true if the content of the streams are equal or they both don't exist, false otherwise
|
||||
*/
|
||||
public static boolean contentEquals( final InputStream input1, final InputStream input2 )
|
||||
throws IOException
|
||||
{
|
||||
final InputStream bufferedInput1 = new BufferedInputStream( input1 );
|
||||
final InputStream bufferedInput2 = new BufferedInputStream( input2 );
|
||||
|
||||
int ch = bufferedInput1.read();
|
||||
while ( -1 != ch )
|
||||
{
|
||||
final int ch2 = bufferedInput2.read();
|
||||
if ( ch != ch2 )
|
||||
{
|
||||
return false;
|
||||
}
|
||||
ch = bufferedInput1.read();
|
||||
}
|
||||
|
||||
final int ch2 = bufferedInput2.read();
|
||||
if ( -1 != ch2 )
|
||||
{
|
||||
return false;
|
||||
}
|
||||
else
|
||||
{
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------
|
||||
// closeXXX()
|
||||
// ----------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Closes the input stream. The input stream can be null and any IOException's will be swallowed.
|
||||
*
|
||||
* @param inputStream The stream to close.
|
||||
*/
|
||||
public static void close( InputStream inputStream )
|
||||
{
|
||||
if ( inputStream == null )
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
try
|
||||
{
|
||||
inputStream.close();
|
||||
}
|
||||
catch ( IOException ex )
|
||||
{
|
||||
// ignore
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Closes the output stream. The output stream can be null and any IOException's will be swallowed.
|
||||
*
|
||||
* @param outputStream The stream to close.
|
||||
*/
|
||||
public static void close( OutputStream outputStream )
|
||||
{
|
||||
if ( outputStream == null )
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
try
|
||||
{
|
||||
outputStream.close();
|
||||
}
|
||||
catch ( IOException ex )
|
||||
{
|
||||
// ignore
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Closes the reader. The reader can be null and any IOException's will be swallowed.
|
||||
*
|
||||
* @param reader The reader to close.
|
||||
*/
|
||||
public static void close( Reader reader )
|
||||
{
|
||||
if ( reader == null )
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
try
|
||||
{
|
||||
reader.close();
|
||||
}
|
||||
catch ( IOException ex )
|
||||
{
|
||||
// ignore
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Closes the writer. The writer can be null and any IOException's will be swallowed.
|
||||
*
|
||||
* @param wrtier The writer to close.
|
||||
*/
|
||||
public static void close( Writer writer )
|
||||
{
|
||||
if ( writer == null )
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
try
|
||||
{
|
||||
writer.close();
|
||||
}
|
||||
catch ( IOException ex )
|
||||
{
|
||||
// ignore
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue