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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE FlexibleInstances #-}</span>
<a name="line-2"></a><span class='hs-comment'>{-# LANGUAGE TypeSynonymInstances #-}</span>
<a name="line-3"></a><span class='hs-comment'>{-# LANGUAGE Rank2Types #-}</span>
<a name="line-4"></a><span class='hs-comment'>{-# LANGUAGE OverloadedStrings #-}</span>
<a name="line-5"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Yesod</span><span class='hs-varop'>.</span><span class='hs-conid'>Content</span>
<a name="line-6"></a> <span class='hs-layout'>(</span> <span class='hs-comment'>-- * Content</span>
<a name="line-7"></a> <span class='hs-conid'>Content</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-8"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>emptyContent</span>
<a name="line-9"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ToContent</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-10"></a> <span class='hs-comment'>-- * Mime types</span>
<a name="line-11"></a> <span class='hs-comment'>-- ** Data type</span>
<a name="line-12"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ContentType</span>
<a name="line-13"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>typeHtml</span>
<a name="line-14"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>typePlain</span>
<a name="line-15"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>typeJson</span>
<a name="line-16"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>typeXml</span>
<a name="line-17"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>typeAtom</span>
<a name="line-18"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>typeRss</span>
<a name="line-19"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>typeJpeg</span>
<a name="line-20"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>typePng</span>
<a name="line-21"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>typeGif</span>
<a name="line-22"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>typeSvg</span>
<a name="line-23"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>typeJavascript</span>
<a name="line-24"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>typeCss</span>
<a name="line-25"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>typeFlv</span>
<a name="line-26"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>typeOgv</span>
<a name="line-27"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>typeOctet</span>
<a name="line-28"></a> <span class='hs-comment'>-- * Utilities</span>
<a name="line-29"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>simpleContentType</span>
<a name="line-30"></a> <span class='hs-comment'>-- * Representations</span>
<a name="line-31"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ChooseRep</span>
<a name="line-32"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>HasReps</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-33"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>defChooseRep</span>
<a name="line-34"></a> <span class='hs-comment'>-- ** Specific content types</span>
<a name="line-35"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>RepHtml</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-36"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>RepJson</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-37"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>RepHtmlJson</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-38"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>RepPlain</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-39"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>RepXml</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-40"></a> <span class='hs-comment'>-- * Utilities</span>
<a name="line-41"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>formatW3</span>
<a name="line-42"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>formatRFC1123</span>
<a name="line-43"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>formatRFC822</span>
<a name="line-44"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-45"></a>
<a name="line-46"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapMaybe</span><span class='hs-layout'>)</span>
<a name="line-47"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>B</span>
<a name="line-48"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>L</span>
<a name="line-49"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span> <span class='hs-layout'>(</span><span class='hs-conid'>Text</span><span class='hs-layout'>,</span> <span class='hs-varid'>pack</span><span class='hs-layout'>)</span>
<a name="line-50"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>T</span>
<a name="line-51"></a>
<a name="line-52"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Time</span>
<a name="line-53"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Locale</span>
<a name="line-54"></a>
<a name="line-55"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Encoding</span>
<a name="line-56"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span><span class='hs-varop'>.</span><span class='hs-conid'>Encoding</span>
<a name="line-57"></a>
<a name="line-58"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Blaze</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Builder</span> <span class='hs-layout'>(</span><span class='hs-conid'>Builder</span><span class='hs-layout'>,</span> <span class='hs-varid'>fromByteString</span><span class='hs-layout'>,</span> <span class='hs-varid'>fromLazyByteString</span><span class='hs-layout'>)</span>
<a name="line-59"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Monoid</span> <span class='hs-layout'>(</span><span class='hs-varid'>mempty</span><span class='hs-layout'>)</span>
<a name="line-60"></a>
<a name="line-61"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Hamlet</span> <span class='hs-layout'>(</span><span class='hs-conid'>Html</span><span class='hs-layout'>)</span>
<a name="line-62"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Blaze</span><span class='hs-varop'>.</span><span class='hs-conid'>Renderer</span><span class='hs-varop'>.</span><span class='hs-conid'>Utf8</span> <span class='hs-layout'>(</span><span class='hs-varid'>renderHtmlBuilder</span><span class='hs-layout'>)</span>
<a name="line-63"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>String</span> <span class='hs-layout'>(</span><span class='hs-conid'>IsString</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromString</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-64"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>Wai</span> <span class='hs-layout'>(</span><span class='hs-conid'>FilePart</span><span class='hs-layout'>)</span>
<a name="line-65"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Conduit</span> <span class='hs-layout'>(</span><span class='hs-conid'>Source</span><span class='hs-layout'>,</span> <span class='hs-conid'>Flush</span><span class='hs-layout'>)</span>
<a name="line-66"></a>
<a name="line-67"></a><a name="Content"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Content</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ContentBuilder</span> <span class='hs-conid'>Builder</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>Int</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ^ The content and optional content length.</span>
<a name="line-68"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>ContentSource</span> <span class='hs-layout'>(</span><span class='hs-conid'>Source</span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Flush</span> <span class='hs-conid'>Builder</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-69"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>ContentFile</span> <span class='hs-conid'>FilePath</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>FilePart</span><span class='hs-layout'>)</span>
<a name="line-70"></a>
<a name="line-71"></a><a name="emptyContent"></a><span class='hs-comment'>-- | Zero-length enumerator.</span>
<a name="line-72"></a><span class='hs-definition'>emptyContent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Content</span>
<a name="line-73"></a><span class='hs-definition'>emptyContent</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ContentBuilder</span> <span class='hs-varid'>mempty</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Just</span> <span class='hs-num'>0</span>
<a name="line-74"></a>
<a name="line-75"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>IsString</span> <span class='hs-conid'>Content</span> <span class='hs-keyword'>where</span>
<a name="line-76"></a> <span class='hs-varid'>fromString</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toContent</span>
<a name="line-77"></a>
<a name="line-78"></a><a name="ToContent"></a><span class='hs-comment'>-- | Anything which can be converted into 'Content'. Most of the time, you will</span>
<a name="line-79"></a><a name="ToContent"></a><span class='hs-comment'>-- want to use the 'ContentBuilder' constructor. An easier approach will be to use</span>
<a name="line-80"></a><a name="ToContent"></a><span class='hs-comment'>-- a pre-defined 'toContent' function, such as converting your data into a lazy</span>
<a name="line-81"></a><a name="ToContent"></a><span class='hs-comment'>-- bytestring and then calling 'toContent' on that.</span>
<a name="line-82"></a><a name="ToContent"></a><span class='hs-comment'>--</span>
<a name="line-83"></a><a name="ToContent"></a><span class='hs-comment'>-- Please note that the built-in instances for lazy data structures ('String',</span>
<a name="line-84"></a><a name="ToContent"></a><span class='hs-comment'>-- lazy 'L.ByteString', lazy 'Text' and 'Html') will not automatically include</span>
<a name="line-85"></a><a name="ToContent"></a><span class='hs-comment'>-- the content length for the 'ContentBuilder' constructor.</span>
<a name="line-86"></a><a name="ToContent"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>ToContent</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span>
<a name="line-87"></a> <span class='hs-varid'>toContent</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Content</span>
<a name="line-88"></a>
<a name="line-89"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ToContent</span> <span class='hs-conid'>Builder</span> <span class='hs-keyword'>where</span>
<a name="line-90"></a> <span class='hs-varid'>toContent</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flip</span> <span class='hs-conid'>ContentBuilder</span> <span class='hs-conid'>Nothing</span>
<a name="line-91"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ToContent</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyword'>where</span>
<a name="line-92"></a> <span class='hs-varid'>toContent</span> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ContentBuilder</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromByteString</span> <span class='hs-varid'>bs</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>length</span> <span class='hs-varid'>bs</span>
<a name="line-93"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ToContent</span> <span class='hs-conid'>L</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyword'>where</span>
<a name="line-94"></a> <span class='hs-varid'>toContent</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flip</span> <span class='hs-conid'>ContentBuilder</span> <span class='hs-conid'>Nothing</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fromLazyByteString</span>
<a name="line-95"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ToContent</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span> <span class='hs-keyword'>where</span>
<a name="line-96"></a> <span class='hs-varid'>toContent</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toContent</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Encoding</span><span class='hs-varop'>.</span><span class='hs-varid'>encodeUtf8</span>
<a name="line-97"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ToContent</span> <span class='hs-conid'>Text</span> <span class='hs-keyword'>where</span>
<a name="line-98"></a> <span class='hs-varid'>toContent</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toContent</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span><span class='hs-varop'>.</span><span class='hs-conid'>Encoding</span><span class='hs-varop'>.</span><span class='hs-varid'>encodeUtf8</span>
<a name="line-99"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ToContent</span> <span class='hs-conid'>String</span> <span class='hs-keyword'>where</span>
<a name="line-100"></a> <span class='hs-varid'>toContent</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toContent</span> <span class='hs-varop'>.</span> <span class='hs-varid'>pack</span>
<a name="line-101"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ToContent</span> <span class='hs-conid'>Html</span> <span class='hs-keyword'>where</span>
<a name="line-102"></a> <span class='hs-varid'>toContent</span> <span class='hs-varid'>bs</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ContentBuilder</span> <span class='hs-layout'>(</span><span class='hs-varid'>renderHtmlBuilder</span> <span class='hs-varid'>bs</span><span class='hs-layout'>)</span> <span class='hs-conid'>Nothing</span>
<a name="line-103"></a>
<a name="line-104"></a><a name="ChooseRep"></a><span class='hs-comment'>-- | A function which gives targetted representations of content based on the</span>
<a name="line-105"></a><a name="ChooseRep"></a><span class='hs-comment'>-- content-types the user accepts.</span>
<a name="line-106"></a><a name="ChooseRep"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>ChooseRep</span> <span class='hs-keyglyph'>=</span>
<a name="line-107"></a> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ContentType</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ list of content-types user accepts, ordered by preference</span>
<a name="line-108"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>ContentType</span><span class='hs-layout'>,</span> <span class='hs-conid'>Content</span><span class='hs-layout'>)</span>
<a name="line-109"></a>
<a name="line-110"></a><a name="HasReps"></a><span class='hs-comment'>-- | Any type which can be converted to representations.</span>
<a name="line-111"></a><a name="HasReps"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>HasReps</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span>
<a name="line-112"></a> <span class='hs-varid'>chooseRep</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ChooseRep</span>
<a name="line-113"></a>
<a name="line-114"></a><a name="defChooseRep"></a><span class='hs-comment'>-- | A helper method for generating 'HasReps' instances.</span>
<a name="line-115"></a><span class='hs-comment'>--</span>
<a name="line-116"></a><span class='hs-comment'>-- This function should be given a list of pairs of content type and conversion</span>
<a name="line-117"></a><span class='hs-comment'>-- functions. If none of the content types match, the first pair is used.</span>
<a name="line-118"></a><span class='hs-definition'>defChooseRep</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>ContentType</span><span class='hs-layout'>,</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Content</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ChooseRep</span>
<a name="line-119"></a><span class='hs-definition'>defChooseRep</span> <span class='hs-varid'>reps</span> <span class='hs-varid'>a</span> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-120"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>ct</span><span class='hs-layout'>,</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-121"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>mapMaybe</span> <span class='hs-varid'>helper</span> <span class='hs-varid'>ts</span> <span class='hs-keyword'>of</span>
<a name="line-122"></a> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>x</span>
<a name="line-123"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>reps</span> <span class='hs-keyword'>of</span>
<a name="line-124"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>error</span> <span class='hs-str'>"Empty reps to defChooseRep"</span>
<a name="line-125"></a> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>x</span>
<a name="line-126"></a> <span class='hs-varid'>c'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>c</span> <span class='hs-varid'>a</span>
<a name="line-127"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>ct</span><span class='hs-layout'>,</span> <span class='hs-varid'>c'</span><span class='hs-layout'>)</span>
<a name="line-128"></a> <span class='hs-keyword'>where</span>
<a name="line-129"></a> <span class='hs-varid'>helper</span> <span class='hs-varid'>ct</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-130"></a> <span class='hs-varid'>c</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>lookup</span> <span class='hs-varid'>ct</span> <span class='hs-varid'>reps</span>
<a name="line-131"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>ct</span><span class='hs-layout'>,</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span>
<a name="line-132"></a>
<a name="line-133"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>HasReps</span> <span class='hs-conid'>ChooseRep</span> <span class='hs-keyword'>where</span>
<a name="line-134"></a> <span class='hs-varid'>chooseRep</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>id</span>
<a name="line-135"></a>
<a name="line-136"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>HasReps</span> <span class='hs-conid'>()</span> <span class='hs-keyword'>where</span>
<a name="line-137"></a> <span class='hs-varid'>chooseRep</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defChooseRep</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>typePlain</span><span class='hs-layout'>,</span> <span class='hs-varid'>const</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>toContent</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-138"></a>
<a name="line-139"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>HasReps</span> <span class='hs-layout'>(</span><span class='hs-conid'>ContentType</span><span class='hs-layout'>,</span> <span class='hs-conid'>Content</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-140"></a> <span class='hs-varid'>chooseRep</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>const</span> <span class='hs-varop'>.</span> <span class='hs-varid'>return</span>
<a name="line-141"></a>
<a name="line-142"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>HasReps</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>ContentType</span><span class='hs-layout'>,</span> <span class='hs-conid'>Content</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyword'>where</span>
<a name="line-143"></a> <span class='hs-varid'>chooseRep</span> <span class='hs-varid'>a</span> <span class='hs-varid'>cts</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span>
<a name="line-144"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>ct</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>go</span> <span class='hs-varid'>ct</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>map</span> <span class='hs-varid'>go</span> <span class='hs-varid'>cts</span><span class='hs-layout'>)</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>of</span>
<a name="line-145"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>ct</span><span class='hs-layout'>,</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>ct</span><span class='hs-layout'>,</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span>
<a name="line-146"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>of</span>
<a name="line-147"></a> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>x</span>
<a name="line-148"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>error</span> <span class='hs-str'>"chooseRep [(ContentType, Content)] of empty"</span>
<a name="line-149"></a> <span class='hs-keyword'>where</span>
<a name="line-150"></a> <span class='hs-varid'>go</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>simpleContentType</span>
<a name="line-151"></a>
<a name="line-152"></a><a name="RepHtml"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>RepHtml</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>RepHtml</span> <span class='hs-conid'>Content</span>
<a name="line-153"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>HasReps</span> <span class='hs-conid'>RepHtml</span> <span class='hs-keyword'>where</span>
<a name="line-154"></a> <span class='hs-varid'>chooseRep</span> <span class='hs-layout'>(</span><span class='hs-conid'>RepHtml</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>typeHtml</span><span class='hs-layout'>,</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span>
<a name="line-155"></a><a name="RepJson"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>RepJson</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>RepJson</span> <span class='hs-conid'>Content</span>
<a name="line-156"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>HasReps</span> <span class='hs-conid'>RepJson</span> <span class='hs-keyword'>where</span>
<a name="line-157"></a> <span class='hs-varid'>chooseRep</span> <span class='hs-layout'>(</span><span class='hs-conid'>RepJson</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>typeJson</span><span class='hs-layout'>,</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span>
<a name="line-158"></a><a name="RepHtmlJson"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>RepHtmlJson</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>RepHtmlJson</span> <span class='hs-conid'>Content</span> <span class='hs-conid'>Content</span>
<a name="line-159"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>HasReps</span> <span class='hs-conid'>RepHtmlJson</span> <span class='hs-keyword'>where</span>
<a name="line-160"></a> <span class='hs-varid'>chooseRep</span> <span class='hs-layout'>(</span><span class='hs-conid'>RepHtmlJson</span> <span class='hs-varid'>html</span> <span class='hs-varid'>json</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>chooseRep</span>
<a name="line-161"></a> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-varid'>typeHtml</span><span class='hs-layout'>,</span> <span class='hs-varid'>html</span><span class='hs-layout'>)</span>
<a name="line-162"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>typeJson</span><span class='hs-layout'>,</span> <span class='hs-varid'>json</span><span class='hs-layout'>)</span>
<a name="line-163"></a> <span class='hs-keyglyph'>]</span>
<a name="line-164"></a><a name="RepPlain"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>RepPlain</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>RepPlain</span> <span class='hs-conid'>Content</span>
<a name="line-165"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>HasReps</span> <span class='hs-conid'>RepPlain</span> <span class='hs-keyword'>where</span>
<a name="line-166"></a> <span class='hs-varid'>chooseRep</span> <span class='hs-layout'>(</span><span class='hs-conid'>RepPlain</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>typePlain</span><span class='hs-layout'>,</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span>
<a name="line-167"></a><a name="RepXml"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>RepXml</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>RepXml</span> <span class='hs-conid'>Content</span>
<a name="line-168"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>HasReps</span> <span class='hs-conid'>RepXml</span> <span class='hs-keyword'>where</span>
<a name="line-169"></a> <span class='hs-varid'>chooseRep</span> <span class='hs-layout'>(</span><span class='hs-conid'>RepXml</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>typeXml</span><span class='hs-layout'>,</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span>
<a name="line-170"></a>
<a name="line-171"></a><a name="ContentType"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>ContentType</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-comment'>-- FIXME Text?</span>
<a name="line-172"></a>
<a name="line-173"></a><a name="typeHtml"></a><span class='hs-definition'>typeHtml</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span>
<a name="line-174"></a><span class='hs-definition'>typeHtml</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"text/html; charset=utf-8"</span>
<a name="line-175"></a>
<a name="line-176"></a><a name="typePlain"></a><span class='hs-definition'>typePlain</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span>
<a name="line-177"></a><span class='hs-definition'>typePlain</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"text/plain; charset=utf-8"</span>
<a name="line-178"></a>
<a name="line-179"></a><a name="typeJson"></a><span class='hs-definition'>typeJson</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span>
<a name="line-180"></a><span class='hs-definition'>typeJson</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"application/json; charset=utf-8"</span>
<a name="line-181"></a>
<a name="line-182"></a><a name="typeXml"></a><span class='hs-definition'>typeXml</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span>
<a name="line-183"></a><span class='hs-definition'>typeXml</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"text/xml"</span>
<a name="line-184"></a>
<a name="line-185"></a><a name="typeAtom"></a><span class='hs-definition'>typeAtom</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span>
<a name="line-186"></a><span class='hs-definition'>typeAtom</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"application/atom+xml"</span>
<a name="line-187"></a>
<a name="line-188"></a><a name="typeRss"></a><span class='hs-definition'>typeRss</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span>
<a name="line-189"></a><span class='hs-definition'>typeRss</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"application/rss+xml"</span>
<a name="line-190"></a>
<a name="line-191"></a><a name="typeJpeg"></a><span class='hs-definition'>typeJpeg</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span>
<a name="line-192"></a><span class='hs-definition'>typeJpeg</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"image/jpeg"</span>
<a name="line-193"></a>
<a name="line-194"></a><a name="typePng"></a><span class='hs-definition'>typePng</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span>
<a name="line-195"></a><span class='hs-definition'>typePng</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"image/png"</span>
<a name="line-196"></a>
<a name="line-197"></a><a name="typeGif"></a><span class='hs-definition'>typeGif</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span>
<a name="line-198"></a><span class='hs-definition'>typeGif</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"image/gif"</span>
<a name="line-199"></a>
<a name="line-200"></a><a name="typeSvg"></a><span class='hs-definition'>typeSvg</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span>
<a name="line-201"></a><span class='hs-definition'>typeSvg</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"image/svg+xml"</span>
<a name="line-202"></a>
<a name="line-203"></a><a name="typeJavascript"></a><span class='hs-definition'>typeJavascript</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span>
<a name="line-204"></a><span class='hs-definition'>typeJavascript</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"text/javascript; charset=utf-8"</span>
<a name="line-205"></a>
<a name="line-206"></a><a name="typeCss"></a><span class='hs-definition'>typeCss</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span>
<a name="line-207"></a><span class='hs-definition'>typeCss</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"text/css; charset=utf-8"</span>
<a name="line-208"></a>
<a name="line-209"></a><a name="typeFlv"></a><span class='hs-definition'>typeFlv</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span>
<a name="line-210"></a><span class='hs-definition'>typeFlv</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"video/x-flv"</span>
<a name="line-211"></a>
<a name="line-212"></a><a name="typeOgv"></a><span class='hs-definition'>typeOgv</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span>
<a name="line-213"></a><span class='hs-definition'>typeOgv</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"video/ogg"</span>
<a name="line-214"></a>
<a name="line-215"></a><a name="typeOctet"></a><span class='hs-definition'>typeOctet</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span>
<a name="line-216"></a><span class='hs-definition'>typeOctet</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"application/octet-stream"</span>
<a name="line-217"></a>
<a name="line-218"></a><a name="simpleContentType"></a><span class='hs-comment'>-- | Removes \"extra\" information at the end of a content type string. In</span>
<a name="line-219"></a><span class='hs-comment'>-- particular, removes everything after the semicolon, if present.</span>
<a name="line-220"></a><span class='hs-comment'>--</span>
<a name="line-221"></a><span class='hs-comment'>-- For example, \"text/html; charset=utf-8\" is commonly used to specify the</span>
<a name="line-222"></a><span class='hs-comment'>-- character encoding for HTML data. This function would return \"text/html\".</span>
<a name="line-223"></a><span class='hs-definition'>simpleContentType</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ContentType</span>
<a name="line-224"></a><span class='hs-definition'>simpleContentType</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fst</span> <span class='hs-varop'>.</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>breakByte</span> <span class='hs-num'>59</span> <span class='hs-comment'>-- 59 == ;</span>
<a name="line-225"></a>
<a name="line-226"></a><a name="formatW3"></a><span class='hs-comment'>-- | Format a 'UTCTime' in W3 format.</span>
<a name="line-227"></a><span class='hs-definition'>formatW3</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>UTCTime</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span>
<a name="line-228"></a><span class='hs-definition'>formatW3</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-varop'>.</span> <span class='hs-varid'>formatTime</span> <span class='hs-varid'>defaultTimeLocale</span> <span class='hs-str'>"%FT%X-00:00"</span>
<a name="line-229"></a>
<a name="line-230"></a><a name="formatRFC1123"></a><span class='hs-comment'>-- | Format as per RFC 1123.</span>
<a name="line-231"></a><span class='hs-definition'>formatRFC1123</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>UTCTime</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span>
<a name="line-232"></a><span class='hs-definition'>formatRFC1123</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-varop'>.</span> <span class='hs-varid'>formatTime</span> <span class='hs-varid'>defaultTimeLocale</span> <span class='hs-str'>"%a, %d %b %Y %X %Z"</span>
<a name="line-233"></a>
<a name="line-234"></a><a name="formatRFC822"></a><span class='hs-comment'>-- | Format as per RFC 822.</span>
<a name="line-235"></a><span class='hs-definition'>formatRFC822</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>UTCTime</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span>
<a name="line-236"></a><span class='hs-definition'>formatRFC822</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-varop'>.</span> <span class='hs-varid'>formatTime</span> <span class='hs-varid'>defaultTimeLocale</span> <span class='hs-str'>"%a, %d %b %Y %H:%M:%S %z"</span>
</pre></body>
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