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Make get, decode, and split handle edge cases correctly #1769

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merged 2 commits into from
Aug 30, 2024
Merged

Make get, decode, and split handle edge cases correctly #1769

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941bc4e
Make get, decode, and split handle a trailing comma correctly
annevk Aug 19, 2024
0334504
Also return an empty string value when a header has no value but is p…
annevk Aug 19, 2024
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54 changes: 29 additions & 25 deletions fetch.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -698,6 +698,19 @@ A: nosniff
B: sniff
A:
</code></pre>
<tr>
<td>
<pre><code class=lang-http>
A:
B: sniff
</code></pre>
<td>« "" »
<tr>
<td>
<pre><code class=lang-http>
B: sniff
</code></pre>
<td>null
<tr>
<td>
<pre><code class=lang-http>A: text/html;", x/x</code></pre>
Expand Down Expand Up @@ -763,12 +776,12 @@ a <a for=/>header value</a> <var>value</var>, run these steps. They return a <a
<li><p>Let <var>position</var> be a <a for=string>position variable</a> for <var>input</var>,
initially pointing at the start of <var>input</var>.

<li><p>Let <var>values</var> be a <a for=/>list</a> of <a for=/>strings</a>, initially empty.
<li><p>Let <var>values</var> be a <a for=/>list</a> of <a for=/>strings</a>, initially « ».

<li><p>Let <var>temporaryValue</var> be the empty string.

<li>
<p>While <var>position</var> is not past the end of <var>input</var>:
<p>While true:

<ol>
<li>
Expand All @@ -778,40 +791,30 @@ a <a for=/>header value</a> <var>value</var>, run these steps. They return a <a
<p class=note>The result might be the empty string.

<li>
<p>If <var>position</var> is not past the end of <var>input</var>, then:
<p>If <var>position</var> is not past the end of <var>input</var> and the
<a for=/>code point</a> at <var>position</var> within <var>input</var> is U+0022 ("):

<ol>
<li>
<p>If the <a for=/>code point</a> at <var>position</var> within <var>input</var> is
U+0022 ("), then:

<ol>
<li><p>Append the result of <a>collecting an HTTP quoted string</a> from <var>input</var>,
given <var>position</var>, to <var>temporaryValue</var>.
<li><p>Append the result of <a>collecting an HTTP quoted string</a> from <var>input</var>,
given <var>position</var>, to <var>temporaryValue</var>.

<li>If <var>position</var> is not past the end of <var>input</var>, then
<a for=iteration>continue</a>.
</ol>

<li>
<p>Otherwise:

<ol>
<li><p>Assert: the <a for=/>code point</a> at <var>position</var> within <var>input</var> is
U+002C (,).

<li><p>Advance <var>position</var> by 1.
</ol>
<li>If <var>position</var> is not past the end of <var>input</var>, then
<a for=iteration>continue</a>.
</ol>

<li><p>Remove all <a>HTTP tab or space</a> from the start and end of <var>temporaryValue</var>.

<li><p><a for=list>Append</a> <var>temporaryValue</var> to <var>values</var>.

<li><p>Set <var>temporaryValue</var> to the empty string.
</ol>

<li><p>Return <var>values</var>.
<li><p>If <var>position</var> is past the end of <var>input</var>, then return <var>values</var>.

<li><p><a for=/>Assert</a>: the <a for=/>code point</a> at <var>position</var> within
<var>input</var> is U+002C (,).

<li><p>Advance <var>position</var> by 1.
</ol>
</ol>

<p class=note>Except for blessed call sites, the algorithm directly above is not to be invoked
Expand Down Expand Up @@ -9040,6 +9043,7 @@ Brad Porter,
Bryan Smith,
Caitlin Potter,
Cameron McCormack,
Carlo Cannas,
白丞祐 (Cheng-You Bai)<!-- CYBAI; GitHub -->,
Chirag S Kumar<!-- fictionistique; GitHub -->,
Chris Needham,
Expand Down
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