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 <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/miniz_oxide-0.7.1/src/inflate/stream.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>stream.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../miniz_oxide/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../miniz_oxide/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span>
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 </pre><pre class="rust"><code><span class="doccomment">//! Extra streaming decompression functionality.
 //!
 //! As of now this is mainly intended for use to build a higher-level wrapper.
 </span><span class="attribute">#[cfg(feature = <span class="string">&quot;with-alloc&quot;</span>)]
 </span><span class="kw">use </span><span class="kw">crate</span>::alloc::boxed::Box;
 <span class="kw">use </span>core::{cmp, mem};

 <span class="kw">use </span><span class="kw">crate</span>::inflate::core::{decompress, inflate_flags, DecompressorOxide, TINFL_LZ_DICT_SIZE};
 <span class="kw">use </span><span class="kw">crate</span>::inflate::TINFLStatus;
 <span class="kw">use crate</span>::{DataFormat, MZError, MZFlush, MZResult, MZStatus, StreamResult};

 <span class="doccomment">/// Tag that determines reset policy of [InflateState](struct.InflateState.html)
 </span><span class="kw">pub trait </span>ResetPolicy {
     <span class="doccomment">/// Performs reset
     </span><span class="kw">fn </span>reset(<span class="kw-2">&amp;</span><span class="self">self</span>, state: <span class="kw-2">&amp;mut </span>InflateState);
 }

 <span class="doccomment">/// Resets state, without performing expensive ops (e.g. zeroing buffer)
 ///
 /// Note that not zeroing buffer can lead to security issues when dealing with untrusted input.
 </span><span class="kw">pub struct </span>MinReset;

 <span class="kw">impl </span>ResetPolicy <span class="kw">for </span>MinReset {
     <span class="kw">fn </span>reset(<span class="kw-2">&amp;</span><span class="self">self</span>, state: <span class="kw-2">&amp;mut </span>InflateState) {
         state.decompressor().init();
         state.dict_ofs = <span class="number">0</span>;
         state.dict_avail = <span class="number">0</span>;
         state.first_call = <span class="bool-val">true</span>;
         state.has_flushed = <span class="bool-val">false</span>;
         state.last_status = TINFLStatus::NeedsMoreInput;
     }
 }

 <span class="doccomment">/// Resets state and zero memory, continuing to use the same data format.
 </span><span class="kw">pub struct </span>ZeroReset;

 <span class="kw">impl </span>ResetPolicy <span class="kw">for </span>ZeroReset {
     <span class="attribute">#[inline]
     </span><span class="kw">fn </span>reset(<span class="kw-2">&amp;</span><span class="self">self</span>, state: <span class="kw-2">&amp;mut </span>InflateState) {
         MinReset.reset(state);
         state.dict = [<span class="number">0</span>; TINFL_LZ_DICT_SIZE];
     }
 }

 <span class="doccomment">/// Full reset of the state, including zeroing memory.
 ///
 /// Requires to provide new data format.
 </span><span class="kw">pub struct </span>FullReset(<span class="kw">pub </span>DataFormat);

 <span class="kw">impl </span>ResetPolicy <span class="kw">for </span>FullReset {
     <span class="attribute">#[inline]
     </span><span class="kw">fn </span>reset(<span class="kw-2">&amp;</span><span class="self">self</span>, state: <span class="kw-2">&amp;mut </span>InflateState) {
         ZeroReset.reset(state);
         state.data_format = <span class="self">self</span>.<span class="number">0</span>;
     }
 }

 <span class="doccomment">/// A struct that compbines a decompressor with extra data for streaming decompression.
 ///
 </span><span class="kw">pub struct </span>InflateState {
     <span class="doccomment">/// Inner decompressor struct
     </span>decomp: DecompressorOxide,

     <span class="doccomment">/// Buffer of input bytes for matches.
     /// TODO: Could probably do this a bit cleaner with some
     /// Cursor-like class.
     /// We may also look into whether we need to keep a buffer here, or just one in the
     /// decompressor struct.
     </span>dict: [u8; TINFL_LZ_DICT_SIZE],
     <span class="doccomment">/// Where in the buffer are we currently at?
     </span>dict_ofs: usize,
     <span class="doccomment">/// How many bytes of data to be flushed is there currently in the buffer?
     </span>dict_avail: usize,

     first_call: bool,
     has_flushed: bool,

     <span class="doccomment">/// Whether the input data is wrapped in a zlib header and checksum.
     /// TODO: This should be stored in the decompressor.
     </span>data_format: DataFormat,
     last_status: TINFLStatus,
 }

 <span class="kw">impl </span>Default <span class="kw">for </span>InflateState {
     <span class="kw">fn </span>default() -&gt; <span class="self">Self </span>{
         InflateState {
             decomp: DecompressorOxide::default(),
             dict: [<span class="number">0</span>; TINFL_LZ_DICT_SIZE],
             dict_ofs: <span class="number">0</span>,
             dict_avail: <span class="number">0</span>,
             first_call: <span class="bool-val">true</span>,
             has_flushed: <span class="bool-val">false</span>,
             data_format: DataFormat::Raw,
             last_status: TINFLStatus::NeedsMoreInput,
         }
     }
 }
 <span class="kw">impl </span>InflateState {
     <span class="doccomment">/// Create a new state.
     ///
     /// Note that this struct is quite large due to internal buffers, and as such storing it on
     /// the stack is not recommended.
     ///
     /// # Parameters
     /// `data_format`: Determines whether the compressed data is assumed to wrapped with zlib
     /// metadata.
     </span><span class="kw">pub fn </span>new(data_format: DataFormat) -&gt; InflateState {
         InflateState {
             data_format,
             ..Default::default()
         }
     }

     <span class="doccomment">/// Create a new state on the heap.
     ///
     /// # Parameters
     /// `data_format`: Determines whether the compressed data is assumed to wrapped with zlib
     /// metadata.
     </span><span class="attribute">#[cfg(feature = <span class="string">&quot;with-alloc&quot;</span>)]
     </span><span class="kw">pub fn </span>new_boxed(data_format: DataFormat) -&gt; Box&lt;InflateState&gt; {
         <span class="kw">let </span><span class="kw-2">mut </span>b: Box&lt;InflateState&gt; = Box::default();
         b.data_format = data_format;
         b
     }

     <span class="doccomment">/// Access the innner decompressor.
     </span><span class="kw">pub fn </span>decompressor(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; <span class="kw-2">&amp;mut </span>DecompressorOxide {
         <span class="kw-2">&amp;mut </span><span class="self">self</span>.decomp
     }

     <span class="doccomment">/// Return the status of the last call to `inflate` with this `InflateState`.
     </span><span class="kw">pub const fn </span>last_status(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; TINFLStatus {
         <span class="self">self</span>.last_status
     }

     <span class="doccomment">/// Create a new state using miniz/zlib style window bits parameter.
     ///
     /// The decompressor does not support different window sizes. As such,
     /// any positive (&gt;0) value will set the zlib header flag, while a negative one
     /// will not.
     </span><span class="attribute">#[cfg(feature = <span class="string">&quot;with-alloc&quot;</span>)]
     </span><span class="kw">pub fn </span>new_boxed_with_window_bits(window_bits: i32) -&gt; Box&lt;InflateState&gt; {
         <span class="kw">let </span><span class="kw-2">mut </span>b: Box&lt;InflateState&gt; = Box::default();
         b.data_format = DataFormat::from_window_bits(window_bits);
         b
     }

     <span class="attribute">#[inline]
     </span><span class="doccomment">/// Reset the decompressor without re-allocating memory, using the given
     /// data format.
     </span><span class="kw">pub fn </span>reset(<span class="kw-2">&amp;mut </span><span class="self">self</span>, data_format: DataFormat) {
         <span class="self">self</span>.reset_as(FullReset(data_format));
     }

     <span class="attribute">#[inline]
     </span><span class="doccomment">/// Resets the state according to specified policy.
     </span><span class="kw">pub fn </span>reset_as&lt;T: ResetPolicy&gt;(<span class="kw-2">&amp;mut </span><span class="self">self</span>, policy: T) {
         policy.reset(<span class="self">self</span>)
     }
 }

 <span class="doccomment">/// Try to decompress from `input` to `output` with the given [`InflateState`]
 ///
 /// # `flush`
 ///
 /// Generally, the various [`MZFlush`] flags have meaning only on the compression side.  They can be
 /// supplied here, but the only one that has any semantic meaning is [`MZFlush::Finish`], which is a
 /// signal that the stream is expected to finish, and failing to do so is an error.  It isn&#39;t
 /// necessary to specify it when the stream ends; you&#39;ll still get returned a
 /// [`MZStatus::StreamEnd`] anyway.  Other values either have no effect or cause errors.  It&#39;s
 /// likely that you&#39;ll almost always just want to use [`MZFlush::None`].
 ///
 /// # Errors
 ///
 /// Returns [`MZError::Buf`] if the size of the `output` slice is empty or no progress was made due
 /// to lack of expected input data, or if called with [`MZFlush::Finish`] and input wasn&#39;t all
 /// consumed.
 ///
 /// Returns [`MZError::Data`] if this or a a previous call failed with an error return from
 /// [`TINFLStatus`]; probably indicates corrupted data.
 ///
 /// Returns [`MZError::Stream`] when called with [`MZFlush::Full`] (meaningless on
 /// decompression), or when called without [`MZFlush::Finish`] after an earlier call with
 /// [`MZFlush::Finish`] has been made.
 </span><span class="kw">pub fn </span>inflate(
     state: <span class="kw-2">&amp;mut </span>InflateState,
     input: <span class="kw-2">&amp;</span>[u8],
     output: <span class="kw-2">&amp;mut </span>[u8],
     flush: MZFlush,
 ) -&gt; StreamResult {
     <span class="kw">let </span><span class="kw-2">mut </span>bytes_consumed = <span class="number">0</span>;
     <span class="kw">let </span><span class="kw-2">mut </span>bytes_written = <span class="number">0</span>;
     <span class="kw">let </span><span class="kw-2">mut </span>next_in = input;
     <span class="kw">let </span><span class="kw-2">mut </span>next_out = output;

     <span class="kw">if </span>flush == MZFlush::Full {
         <span class="kw">return </span>StreamResult::error(MZError::Stream);
     }

     <span class="kw">let </span><span class="kw-2">mut </span>decomp_flags = <span class="kw">if </span>state.data_format == DataFormat::Zlib {
         inflate_flags::TINFL_FLAG_COMPUTE_ADLER32
     } <span class="kw">else </span>{
         inflate_flags::TINFL_FLAG_IGNORE_ADLER32
     };

     <span class="kw">if </span>(state.data_format == DataFormat::Zlib)
         | (state.data_format == DataFormat::ZLibIgnoreChecksum)
     {
         decomp_flags |= inflate_flags::TINFL_FLAG_PARSE_ZLIB_HEADER;
     }

     <span class="kw">let </span>first_call = state.first_call;
     state.first_call = <span class="bool-val">false</span>;
     <span class="kw">if </span>(state.last_status <span class="kw">as </span>i32) &lt; <span class="number">0 </span>{
         <span class="kw">return </span>StreamResult::error(MZError::Data);
     }

     <span class="kw">if </span>state.has_flushed &amp;&amp; (flush != MZFlush::Finish) {
         <span class="kw">return </span>StreamResult::error(MZError::Stream);
     }
     state.has_flushed |= flush == MZFlush::Finish;

     <span class="kw">if </span>(flush == MZFlush::Finish) &amp;&amp; first_call {
         decomp_flags |= inflate_flags::TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF;

         <span class="kw">let </span>status = decompress(<span class="kw-2">&amp;mut </span>state.decomp, next_in, next_out, <span class="number">0</span>, decomp_flags);
         <span class="kw">let </span>in_bytes = status.<span class="number">1</span>;
         <span class="kw">let </span>out_bytes = status.<span class="number">2</span>;
         <span class="kw">let </span>status = status.<span class="number">0</span>;

         state.last_status = status;

         bytes_consumed += in_bytes;
         bytes_written += out_bytes;

         <span class="kw">let </span>ret_status = {
             <span class="kw">if </span>(status <span class="kw">as </span>i32) &lt; <span class="number">0 </span>{
                 <span class="prelude-val">Err</span>(MZError::Data)
             } <span class="kw">else if </span>status != TINFLStatus::Done {
                 state.last_status = TINFLStatus::Failed;
                 <span class="prelude-val">Err</span>(MZError::Buf)
             } <span class="kw">else </span>{
                 <span class="prelude-val">Ok</span>(MZStatus::StreamEnd)
             }
         };
         <span class="kw">return </span>StreamResult {
             bytes_consumed,
             bytes_written,
             status: ret_status,
         };
     }

     <span class="kw">if </span>flush != MZFlush::Finish {
         decomp_flags |= inflate_flags::TINFL_FLAG_HAS_MORE_INPUT;
     }

     <span class="kw">if </span>state.dict_avail != <span class="number">0 </span>{
         bytes_written += push_dict_out(state, <span class="kw-2">&amp;mut </span>next_out);
         <span class="kw">return </span>StreamResult {
             bytes_consumed,
             bytes_written,
             status: <span class="prelude-val">Ok</span>(
                 <span class="kw">if </span>(state.last_status == TINFLStatus::Done) &amp;&amp; (state.dict_avail == <span class="number">0</span>) {
                     MZStatus::StreamEnd
                 } <span class="kw">else </span>{
                     MZStatus::Ok
                 },
             ),
         };
     }

     <span class="kw">let </span>status = inflate_loop(
         state,
         <span class="kw-2">&amp;mut </span>next_in,
         <span class="kw-2">&amp;mut </span>next_out,
         <span class="kw-2">&amp;mut </span>bytes_consumed,
         <span class="kw-2">&amp;mut </span>bytes_written,
         decomp_flags,
         flush,
     );
     StreamResult {
         bytes_consumed,
         bytes_written,
         status,
     }
 }

 <span class="kw">fn </span>inflate_loop(
     state: <span class="kw-2">&amp;mut </span>InflateState,
     next_in: <span class="kw-2">&amp;mut &amp;</span>[u8],
     next_out: <span class="kw-2">&amp;mut &amp;mut </span>[u8],
     total_in: <span class="kw-2">&amp;mut </span>usize,
     total_out: <span class="kw-2">&amp;mut </span>usize,
     decomp_flags: u32,
     flush: MZFlush,
 ) -&gt; MZResult {
     <span class="kw">let </span>orig_in_len = next_in.len();
     <span class="kw">loop </span>{
         <span class="kw">let </span>status = decompress(
             <span class="kw-2">&amp;mut </span>state.decomp,
             <span class="kw-2">*</span>next_in,
             <span class="kw-2">&amp;mut </span>state.dict,
             state.dict_ofs,
             decomp_flags,
         );

         <span class="kw">let </span>in_bytes = status.<span class="number">1</span>;
         <span class="kw">let </span>out_bytes = status.<span class="number">2</span>;
         <span class="kw">let </span>status = status.<span class="number">0</span>;

         state.last_status = status;

         <span class="kw-2">*</span>next_in = <span class="kw-2">&amp;</span>next_in[in_bytes..];
         <span class="kw-2">*</span>total_in += in_bytes;

         state.dict_avail = out_bytes;
         <span class="kw-2">*</span>total_out += push_dict_out(state, next_out);

         <span class="comment">// The stream was corrupted, and decompression failed.
         </span><span class="kw">if </span>(status <span class="kw">as </span>i32) &lt; <span class="number">0 </span>{
             <span class="kw">return </span><span class="prelude-val">Err</span>(MZError::Data);
         }

         <span class="comment">// The decompressor has flushed all it&#39;s data and is waiting for more input, but
         // there was no more input provided.
         </span><span class="kw">if </span>(status == TINFLStatus::NeedsMoreInput) &amp;&amp; orig_in_len == <span class="number">0 </span>{
             <span class="kw">return </span><span class="prelude-val">Err</span>(MZError::Buf);
         }

         <span class="kw">if </span>flush == MZFlush::Finish {
             <span class="kw">if </span>status == TINFLStatus::Done {
                 <span class="comment">// There is not enough space in the output buffer to flush the remaining
                 // decompressed data in the internal buffer.
                 </span><span class="kw">return if </span>state.dict_avail != <span class="number">0 </span>{
                     <span class="prelude-val">Err</span>(MZError::Buf)
                 } <span class="kw">else </span>{
                     <span class="prelude-val">Ok</span>(MZStatus::StreamEnd)
                 };
             <span class="comment">// No more space in the output buffer, but we&#39;re not done.
             </span>} <span class="kw">else if </span>next_out.is_empty() {
                 <span class="kw">return </span><span class="prelude-val">Err</span>(MZError::Buf);
             }
         } <span class="kw">else </span>{
             <span class="comment">// We&#39;re not expected to finish, so it&#39;s fine if we can&#39;t flush everything yet.
             </span><span class="kw">let </span>empty_buf = next_in.is_empty() || next_out.is_empty();
             <span class="kw">if </span>(status == TINFLStatus::Done) || empty_buf || (state.dict_avail != <span class="number">0</span>) {
                 <span class="kw">return if </span>(status == TINFLStatus::Done) &amp;&amp; (state.dict_avail == <span class="number">0</span>) {
                     <span class="comment">// No more data left, we&#39;re done.
                     </span><span class="prelude-val">Ok</span>(MZStatus::StreamEnd)
                 } <span class="kw">else </span>{
                     <span class="comment">// Ok for now, still waiting for more input data or output space.
                     </span><span class="prelude-val">Ok</span>(MZStatus::Ok)
                 };
             }
         }
     }
 }

 <span class="kw">fn </span>push_dict_out(state: <span class="kw-2">&amp;mut </span>InflateState, next_out: <span class="kw-2">&amp;mut &amp;mut </span>[u8]) -&gt; usize {
     <span class="kw">let </span>n = cmp::min(state.dict_avail <span class="kw">as </span>usize, next_out.len());
     (next_out[..n]).copy_from_slice(<span class="kw-2">&amp;</span>state.dict[state.dict_ofs..state.dict_ofs + n]);
     <span class="kw-2">*</span>next_out = <span class="kw-2">&amp;mut </span>mem::take(next_out)[n..];
     state.dict_avail -= n;
     state.dict_ofs = (state.dict_ofs + (n)) &amp; (TINFL_LZ_DICT_SIZE - <span class="number">1</span>);
     n
 }

 <span class="attribute">#[cfg(test)]
 </span><span class="kw">mod </span>test {
     <span class="kw">use super</span>::{inflate, InflateState};
     <span class="kw">use crate</span>::{DataFormat, MZFlush, MZStatus};
     <span class="kw">use </span>alloc::vec;

     <span class="attribute">#[test]
     </span><span class="kw">fn </span>test_state() {
         <span class="kw">let </span>encoded = [
             <span class="number">120u8</span>, <span class="number">156</span>, <span class="number">243</span>, <span class="number">72</span>, <span class="number">205</span>, <span class="number">201</span>, <span class="number">201</span>, <span class="number">215</span>, <span class="number">81</span>, <span class="number">168</span>, <span class="number">202</span>, <span class="number">201</span>, <span class="number">76</span>, <span class="number">82</span>, <span class="number">4</span>, <span class="number">0</span>, <span class="number">27</span>, <span class="number">101</span>, <span class="number">4</span>,
             <span class="number">19</span>,
         ];
         <span class="kw">let </span><span class="kw-2">mut </span>out = <span class="macro">vec!</span>[<span class="number">0</span>; <span class="number">50</span>];
         <span class="kw">let </span><span class="kw-2">mut </span>state = InflateState::new_boxed(DataFormat::Zlib);
         <span class="kw">let </span>res = inflate(<span class="kw-2">&amp;mut </span>state, <span class="kw-2">&amp;</span>encoded, <span class="kw-2">&amp;mut </span>out, MZFlush::Finish);
         <span class="kw">let </span>status = res.status.expect(<span class="string">&quot;Failed to decompress!&quot;</span>);
         <span class="macro">assert_eq!</span>(status, MZStatus::StreamEnd);
         <span class="macro">assert_eq!</span>(out[..res.bytes_written <span class="kw">as </span>usize], <span class="string">b&quot;Hello, zlib!&quot;</span>[..]);
         <span class="macro">assert_eq!</span>(res.bytes_consumed, encoded.len());

         state.reset_as(<span class="kw">super</span>::ZeroReset);
         out.iter_mut().map(|x| <span class="kw-2">*</span>x = <span class="number">0</span>).count();
         <span class="kw">let </span>res = inflate(<span class="kw-2">&amp;mut </span>state, <span class="kw-2">&amp;</span>encoded, <span class="kw-2">&amp;mut </span>out, MZFlush::Finish);
         <span class="kw">let </span>status = res.status.expect(<span class="string">&quot;Failed to decompress!&quot;</span>);
         <span class="macro">assert_eq!</span>(status, MZStatus::StreamEnd);
         <span class="macro">assert_eq!</span>(out[..res.bytes_written <span class="kw">as </span>usize], <span class="string">b&quot;Hello, zlib!&quot;</span>[..]);
         <span class="macro">assert_eq!</span>(res.bytes_consumed, encoded.len());

         state.reset_as(<span class="kw">super</span>::MinReset);
         out.iter_mut().map(|x| <span class="kw-2">*</span>x = <span class="number">0</span>).count();
         <span class="kw">let </span>res = inflate(<span class="kw-2">&amp;mut </span>state, <span class="kw-2">&amp;</span>encoded, <span class="kw-2">&amp;mut </span>out, MZFlush::Finish);
         <span class="kw">let </span>status = res.status.expect(<span class="string">&quot;Failed to decompress!&quot;</span>);
         <span class="macro">assert_eq!</span>(status, MZStatus::StreamEnd);
         <span class="macro">assert_eq!</span>(out[..res.bytes_written <span class="kw">as </span>usize], <span class="string">b&quot;Hello, zlib!&quot;</span>[..]);
         <span class="macro">assert_eq!</span>(res.bytes_consumed, encoded.len());
         <span class="macro">assert_eq!</span>(state.decompressor().adler32(), <span class="prelude-val">Some</span>(<span class="number">459605011</span>));

         <span class="comment">// Test state when not computing adler.
         </span>state = InflateState::new_boxed(DataFormat::ZLibIgnoreChecksum);
         out.iter_mut().map(|x| <span class="kw-2">*</span>x = <span class="number">0</span>).count();
         <span class="kw">let </span>res = inflate(<span class="kw-2">&amp;mut </span>state, <span class="kw-2">&amp;</span>encoded, <span class="kw-2">&amp;mut </span>out, MZFlush::Finish);
         <span class="kw">let </span>status = res.status.expect(<span class="string">&quot;Failed to decompress!&quot;</span>);
         <span class="macro">assert_eq!</span>(status, MZStatus::StreamEnd);
         <span class="macro">assert_eq!</span>(out[..res.bytes_written <span class="kw">as </span>usize], <span class="string">b&quot;Hello, zlib!&quot;</span>[..]);
         <span class="macro">assert_eq!</span>(res.bytes_consumed, encoded.len());
         <span class="comment">// Not computed, so should be Some(1)
         </span><span class="macro">assert_eq!</span>(state.decompressor().adler32(), <span class="prelude-val">Some</span>(<span class="number">1</span>));
         <span class="comment">// Should still have the checksum read from the header file.
         </span><span class="macro">assert_eq!</span>(state.decompressor().adler32_header(), <span class="prelude-val">Some</span>(<span class="number">459605011</span>))
     }
 }
 </code></pre></div>
 </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="miniz_oxide" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html>