mentat/hyper/header/parsing/fn.parse_extended_value.html

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<p class='location'><a href='../../index.html'>hyper</a>::<wbr><a href='../index.html'>header</a>::<wbr><a href='index.html'>parsing</a></p><script>window.sidebarCurrent = {name: 'parse_extended_value', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<h1 class='fqn'><span class='in-band'>Function <a href='../../index.html'>hyper</a>::<wbr><a href='../index.html'>header</a>::<wbr><a href='index.html'>parsing</a>::<wbr><a class="fn" href=''>parse_extended_value</a></span><span class='out-of-band'><span id='render-detail'>
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<pre class='rust fn'>pub fn parse_extended_value(val: &amp;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -&gt; <a class="type" href="../../../hyper/error/type.Result.html" title="type hyper::error::Result">Result</a>&lt;<a class="struct" href="../../../hyper/header/parsing/struct.ExtendedValue.html" title="struct hyper::header::parsing::ExtendedValue">ExtendedValue</a>&gt;</pre><div class='docblock'><p>Parses extended header parameter values (<code>ext-value</code>), as defined in
<a href="https://tools.ietf.org/html/rfc5987#section-3.2">RFC 5987</a>.</p>
<p>Extended values are denoted by parameter names that end with <code>*</code>.</p>
<h2 id="abnf" class="section-header"><a href="#abnf">ABNF</a></h2>
<pre><code class="language-text">ext-value = charset &quot;'&quot; [ language ] &quot;'&quot; value-chars
; like RFC 2231's &lt;extended-initial-value&gt;
; (see [RFC2231], Section 7)
charset = &quot;UTF-8&quot; / &quot;ISO-8859-1&quot; / mime-charset
mime-charset = 1*mime-charsetc
mime-charsetc = ALPHA / DIGIT
/ &quot;!&quot; / &quot;#&quot; / &quot;$&quot; / &quot;%&quot; / &quot;&amp;&quot;
/ &quot;+&quot; / &quot;-&quot; / &quot;^&quot; / &quot;_&quot; / &quot;`&quot;
/ &quot;{&quot; / &quot;}&quot; / &quot;~&quot;
; as &lt;mime-charset&gt; in Section 2.3 of [RFC2978]
; except that the single quote is not included
; SHOULD be registered in the IANA charset registry
language = &lt;Language-Tag, defined in [RFC5646], Section 2.1&gt;
value-chars = *( pct-encoded / attr-char )
pct-encoded = &quot;%&quot; HEXDIG HEXDIG
; see [RFC3986], Section 2.1
attr-char = ALPHA / DIGIT
/ &quot;!&quot; / &quot;#&quot; / &quot;$&quot; / &quot;&amp;&quot; / &quot;+&quot; / &quot;-&quot; / &quot;.&quot;
/ &quot;^&quot; / &quot;_&quot; / &quot;`&quot; / &quot;|&quot; / &quot;~&quot;
; token except ( &quot;*&quot; / &quot;'&quot; / &quot;%&quot; )
</code></pre>
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