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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/170252">170252</a></dd>
<dt>Author</dt> <dd>andersca@apple.com</dd>
<dt>Date</dt> <dd>2014-06-21 14:01:26 -0700 (Sat, 21 Jun 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>Begin work on decoding form data
https://bugs.webkit.org/show_bug.cgi?id=134163

Reviewed by Sam Weinig.

* UIProcess/mac/LegacySessionStateCoding.cpp:
(WebKit::HistoryEntryDataDecoder::operator&gt;&gt;):
(WebKit::HistoryEntryDataDecoder::isValid):
(WebKit::isValidEnum):
(WebKit::decodeFormDataElement):
(WebKit::decodeFormData):
(WebKit::decodeBackForwardTreeNode):</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebKit2ChangeLog">trunk/Source/WebKit2/ChangeLog</a></li>
<li><a href="#trunkSourceWebKit2UIProcessmacLegacySessionStateCodingcpp">trunk/Source/WebKit2/UIProcess/mac/LegacySessionStateCoding.cpp</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebKit2ChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/ChangeLog (170251 => 170252)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/ChangeLog        2014-06-21 20:05:38 UTC (rev 170251)
+++ trunk/Source/WebKit2/ChangeLog        2014-06-21 21:01:26 UTC (rev 170252)
</span><span class="lines">@@ -1,5 +1,20 @@
</span><span class="cx"> 2014-06-21  Anders Carlsson  &lt;andersca@apple.com&gt;
</span><span class="cx"> 
</span><ins>+        Begin work on decoding form data
+        https://bugs.webkit.org/show_bug.cgi?id=134163
+
+        Reviewed by Sam Weinig.
+
+        * UIProcess/mac/LegacySessionStateCoding.cpp:
+        (WebKit::HistoryEntryDataDecoder::operator&gt;&gt;):
+        (WebKit::HistoryEntryDataDecoder::isValid):
+        (WebKit::isValidEnum):
+        (WebKit::decodeFormDataElement):
+        (WebKit::decodeFormData):
+        (WebKit::decodeBackForwardTreeNode):
+
+2014-06-21  Anders Carlsson  &lt;andersca@apple.com&gt;
+
</ins><span class="cx">         Only initialize WebPreferences from NSUserDefaults if there's an identifier
</span><span class="cx">         https://bugs.webkit.org/show_bug.cgi?id=134162
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessmacLegacySessionStateCodingcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/mac/LegacySessionStateCoding.cpp (170251 => 170252)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/mac/LegacySessionStateCoding.cpp        2014-06-21 20:05:38 UTC (rev 170251)
+++ trunk/Source/WebKit2/UIProcess/mac/LegacySessionStateCoding.cpp        2014-06-21 21:01:26 UTC (rev 170252)
</span><span class="lines">@@ -198,6 +198,8 @@
</span><span class="cx">     return true;
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+template&lt;typename T&gt; void isValidEnum(T);
+
</ins><span class="cx"> class HistoryEntryDataDecoder {
</span><span class="cx"> public:
</span><span class="cx">     HistoryEntryDataDecoder(const uint8_t* buffer, size_t bufferSize)
</span><span class="lines">@@ -273,6 +275,56 @@
</span><span class="cx">         return *this;
</span><span class="cx">     }
</span><span class="cx"> 
</span><ins>+    HistoryEntryDataDecoder&amp; operator&gt;&gt;(Vector&lt;uint8_t&gt;&amp; value)
+    {
+        value = { };
+
+        uint64_t size;
+        *this &gt;&gt; size;
+
+        if (!alignBufferPosition(1, size))
+            return *this;
+
+        const uint8_t* data = m_buffer;
+        m_buffer += size;
+
+        value.append(data, size);
+        return *this;
+    }
+
+    HistoryEntryDataDecoder&amp; operator&gt;&gt;(Vector&lt;char&gt;&amp; value)
+    {
+        value = { };
+
+        uint64_t size;
+        *this &gt;&gt; size;
+
+        if (!alignBufferPosition(1, size))
+            return *this;
+
+        const uint8_t* data = m_buffer;
+        m_buffer += size;
+
+        value.append(data, size);
+        return *this;
+    }
+
+    template&lt;typename T&gt;
+    auto operator&gt;&gt;(Optional&lt;T&gt;&amp; value) -&gt; typename std::enable_if&lt;std::is_enum&lt;T&gt;::value, HistoryEntryDataDecoder&amp;&gt;::type
+    {
+        uint32_t underlyingEnumValue;
+        *this &gt;&gt; underlyingEnumValue;
+
+        if (!isValid() || !isValidEnum(static_cast&lt;T&gt;(underlyingEnumValue)))
+            value = Nullopt;
+        else
+            value = static_cast&lt;T&gt;(underlyingEnumValue);
+
+        return *this;
+    }
+
+    bool isValid() const { return m_buffer &lt;= m_bufferEnd; }
+
</ins><span class="cx">     bool finishDecoding() { return m_buffer == m_bufferEnd; }
</span><span class="cx"> 
</span><span class="cx"> private:
</span><span class="lines">@@ -343,6 +395,63 @@
</span><span class="cx">     const uint8_t* m_bufferEnd;
</span><span class="cx"> };
</span><span class="cx"> 
</span><ins>+enum class FormDataElementType {
+    Data = 0,
+    EncodedFile = 1,
+    EncodedBlob = 2,
+};
+
+static bool isValidEnum(FormDataElementType type)
+{
+    switch (type) {
+    case FormDataElementType::Data:
+    case FormDataElementType::EncodedFile:
+    case FormDataElementType::EncodedBlob:
+        return true;
+    }
+
+    return false;
+}
+
+static void decodeFormDataElement(HistoryEntryDataDecoder&amp; decoder, HTTPBody::Element&amp; formDataElement)
+{
+    Optional&lt;FormDataElementType&gt; elementType;
+    decoder &gt;&gt; elementType;
+    if (!elementType)
+        return;
+
+    switch (elementType.value()) {
+    case FormDataElementType::Data:
+        formDataElement.type = HTTPBody::Element::Type::Data;
+        decoder &gt;&gt; formDataElement.data;
+        break;
+
+    case FormDataElementType::EncodedFile:
+    case FormDataElementType::EncodedBlob:
+        // FIXME: Implement.
+        ASSERT_NOT_REACHED();
+    }
+}
+
+static void decodeFormData(HistoryEntryDataDecoder&amp; decoder, HTTPBody&amp; formData)
+{
+    bool alwaysStream;
+    decoder &gt;&gt; alwaysStream;
+
+    Vector&lt;uint8_t&gt; boundary;
+    decoder &gt;&gt; boundary;
+
+    uint64_t formDataElementCount;
+    decoder &gt;&gt; formDataElementCount;
+
+    for (uint64_t i = 0; i &lt; formDataElementCount; ++i) {
+        HTTPBody::Element formDataElement;
+        decodeFormDataElement(decoder, formDataElement);
+
+        formData.elements.append(std::move(formDataElement));
+    }
+}
+
</ins><span class="cx"> static void decodeBackForwardTreeNode(HistoryEntryDataDecoder&amp; decoder, FrameState&amp; frameState)
</span><span class="cx"> {
</span><span class="cx">     uint64_t childCount;
</span><span class="lines">@@ -374,8 +483,12 @@
</span><span class="cx">     decoder &gt;&gt; hasFormData;
</span><span class="cx"> 
</span><span class="cx">     if (hasFormData) {
</span><del>-        // FIXME: Implement.
-        ASSERT_NOT_REACHED();
</del><ins>+        HTTPBody httpBody;
+        httpBody.contentType = std::move(formContentType);
+
+        decodeFormData(decoder, httpBody);
+
+        frameState.httpBody = std::move(httpBody);
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     decoder &gt;&gt; frameState.itemSequenceNumber;
</span></span></pre>
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