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pnmixer-rust/deflate/write/struct.ZlibEncoder.html
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<p class='location'>Struct ZlibEncoder</p><div class="block items"><ul><li><a href="#methods">Methods</a></li><li><a href="#implementations">Trait Implementations</a></li></ul></div><p class='location'><a href='../index.html'>deflate</a>::<wbr><a href='index.html'>write</a></p><script>window.sidebarCurrent = {name: 'ZlibEncoder', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<h1 class='fqn'><span class='in-band'>Struct <a href='../index.html'>deflate</a>::<wbr><a href='index.html'>write</a>::<wbr><a class="struct" href=''>ZlibEncoder</a></span><span class='out-of-band'><span id='render-detail'>
<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
[<span class='inner'>&#x2212;</span>]
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</span><a class='srclink' href='../../src/deflate/writer.rs.html#186-190' title='goto source code'>[src]</a></span></h1>
<pre class='rust struct'>pub struct ZlibEncoder&lt;W:&nbsp;<a class="trait" href="https://doc.rust-lang.org/nightly/std/io/trait.Write.html" title="trait std::io::Write">Write</a>&gt; { /* fields omitted */ }</pre><div class='docblock'><p>A Zlib encoder/compressor.</p>
<p>A struct implementing a <a href="https://doc.rust-lang.org/std/io/trait.Write.html"><code>Write</code></a> interface that takes unencoded data and compresses it to
the provided writer using DEFLATE compression with Zlib headers and trailers.</p>
<h1 id='examples' class='section-header'><a href='#examples'>Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>::<span class="ident">Write</span>;
<span class="kw">use</span> <span class="ident">deflate</span>::<span class="ident">Compression</span>;
<span class="kw">use</span> <span class="ident">deflate</span>::<span class="ident">write</span>::<span class="ident">ZlibEncoder</span>;
<span class="kw">let</span> <span class="ident">data</span> <span class="op">=</span> <span class="string">b&quot;This is some test data&quot;</span>;
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">encoder</span> <span class="op">=</span> <span class="ident">ZlibEncoder</span>::<span class="ident">new</span>(<span class="ident">Vec</span>::<span class="ident">new</span>(), <span class="ident">Compression</span>::<span class="ident">Default</span>);
<span class="ident">encoder</span>.<span class="ident">write_all</span>(<span class="ident">data</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">compressed_data</span> <span class="op">=</span> <span class="ident">encoder</span>.<span class="ident">finish</span>()<span class="question-mark">?</span>;</pre>
</div><h2 id='methods'>Methods</h2><h3 class='impl'><span class='in-band'><code>impl&lt;W:&nbsp;<a class="trait" href="https://doc.rust-lang.org/nightly/std/io/trait.Write.html" title="trait std::io::Write">Write</a>&gt; <a class="struct" href="../../deflate/write/struct.ZlibEncoder.html" title="struct deflate::write::ZlibEncoder">ZlibEncoder</a>&lt;W&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/deflate/writer.rs.html#192-252' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.new' class="method"><span id='new.v' class='invisible'><code>fn <a href='#method.new' class='fnname'>new</a>&lt;O:&nbsp;<a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;<a class="struct" href="../../deflate/struct.CompressionOptions.html" title="struct deflate::CompressionOptions">CompressionOptions</a>&gt;&gt;(writer: W, options: O) -&gt; <a class="struct" href="../../deflate/write/struct.ZlibEncoder.html" title="struct deflate::write::ZlibEncoder">ZlibEncoder</a>&lt;W&gt;</code></span></h4>
<div class='docblock'><p>Create a new <code>ZlibEncoder</code> using the provided compression options.</p>
</div><h4 id='method.finish' class="method"><span id='finish.v' class='invisible'><code>fn <a href='#method.finish' class='fnname'>finish</a>(self) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;W&gt;</code></span></h4>
<div class='docblock'><p>Encode all pending data to the contained writer, consume this <code>ZlibEncoder</code>,
and return the contained writer if writing succeeds.</p>
</div><h4 id='method.reset' class="method"><span id='reset.v' class='invisible'><code>fn <a href='#method.reset' class='fnname'>reset</a>(&amp;mut self, writer: W) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;W&gt;</code></span></h4>
<div class='docblock'><p>Resets the encoder (except the compression options), replacing the current writer
with a new one, returning the old one.</p>
</div><h4 id='method.checksum' class="method"><span id='checksum.v' class='invisible'><code>fn <a href='#method.checksum' class='fnname'>checksum</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span></h4>
<div class='docblock'><p>Return the adler32 checksum of the currently consumed data.</p>
</div></div><h2 id='implementations'>Trait Implementations</h2><h3 class='impl'><span class='in-band'><code>impl&lt;W:&nbsp;<a class="trait" href="https://doc.rust-lang.org/nightly/std/io/trait.Write.html" title="trait std::io::Write">Write</a>&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/std/io/trait.Write.html" title="trait std::io::Write">Write</a> for <a class="struct" href="../../deflate/write/struct.ZlibEncoder.html" title="struct deflate::write::ZlibEncoder">ZlibEncoder</a>&lt;W&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/deflate/writer.rs.html#254-278' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.write' class="method"><span id='write.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/std/io/trait.Write.html#tymethod.write' class='fnname'>write</a>(&amp;mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code></span></h4>
<div class='docblock'><p>Write a buffer into this object, returning how many bytes were written. <a href="https://doc.rust-lang.org/nightly/std/io/trait.Write.html#tymethod.write">Read more</a></p>
</div><h4 id='method.flush' class="method"><span id='flush.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/std/io/trait.Write.html#tymethod.flush' class='fnname'>flush</a>(&amp;mut self) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">()</a>&gt;</code></span></h4>
<div class='docblock'><p>Flush the encoder.</p>
<p>This will flush the encoder, emulating the Sync flush method from Zlib.
This essentially finishes the current block, and sends an additional empty stored block to
the writer.</p>
</div><h4 id='method.write_all' class="method"><span id='write_all.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/std/io/trait.Write.html#method.write_all' class='fnname'>write_all</a>(&amp;mut self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>&gt;</code><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div></span></h4>
<div class='docblock'><p>Attempts to write an entire buffer into this write. <a href="https://doc.rust-lang.org/nightly/std/io/trait.Write.html#method.write_all">Read more</a></p>
</div><h4 id='method.write_fmt' class="method"><span id='write_fmt.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/std/io/trait.Write.html#method.write_fmt' class='fnname'>write_fmt</a>(&amp;mut self, fmt: <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Arguments.html" title="struct core::fmt::Arguments">Arguments</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>&gt;</code><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div></span></h4>
<div class='docblock'><p>Writes a formatted string into this writer, returning any error encountered. <a href="https://doc.rust-lang.org/nightly/std/io/trait.Write.html#method.write_fmt">Read more</a></p>
</div><h4 id='method.by_ref' class="method"><span id='by_ref.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/std/io/trait.Write.html#method.by_ref' class='fnname'>by_ref</a>(&amp;mut self) -&gt; &amp;mut Self</code><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div></span></h4>
<div class='docblock'><p>Creates a &quot;by reference&quot; adaptor for this instance of <code>Write</code>. <a href="https://doc.rust-lang.org/nightly/std/io/trait.Write.html#method.by_ref">Read more</a></p>
</div></div><h3 class='impl'><span class='in-band'><code>impl&lt;W:&nbsp;<a class="trait" href="https://doc.rust-lang.org/nightly/std/io/trait.Write.html" title="trait std::io::Write">Write</a>&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html" title="trait core::ops::drop::Drop">Drop</a> for <a class="struct" href="../../deflate/write/struct.ZlibEncoder.html" title="struct deflate::write::ZlibEncoder">ZlibEncoder</a>&lt;W&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/deflate/writer.rs.html#280-291' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.drop' class="method"><span id='drop.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html#tymethod.drop' class='fnname'>drop</a>(&amp;mut self)</code></span></h4>
<div class='docblock'><p>When the encoder is dropped, output the rest of the data.</p>
<p>WARNING: This may silently fail if writing fails, so using this to finish encoding
for writers where writing might fail is not recommended, for that call
<a href="#method.finish"><code>finish()</code></a> instead.</p>
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