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<pre><a name="line-1"></a><span class='hs-comment'>-- #hide</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-4"></a><span class='hs-comment'>-- |</span>
<a name="line-5"></a><span class='hs-comment'>-- Module : Network.CGI.RFC822Headers</span>
<a name="line-6"></a><span class='hs-comment'>-- Copyright : (c) Peter Thiemann 2001,2002</span>
<a name="line-7"></a><span class='hs-comment'>-- (c) Bjorn Bringert 2005-2006</span>
<a name="line-8"></a><span class='hs-comment'>-- (c) Lemmih 2007</span>
<a name="line-9"></a><span class='hs-comment'>-- License : BSD-style</span>
<a name="line-10"></a><span class='hs-comment'>--</span>
<a name="line-11"></a><span class='hs-comment'>-- Maintainer : lemmih@vo.com</span>
<a name="line-12"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-13"></a><span class='hs-comment'>-- Portability : portable</span>
<a name="line-14"></a><span class='hs-comment'>--</span>
<a name="line-15"></a><span class='hs-comment'>-- Parsing of RFC822-style headers (name, value pairs)</span>
<a name="line-16"></a><span class='hs-comment'>-- Partly based on code from WASHMail.</span>
<a name="line-17"></a><span class='hs-comment'>--</span>
<a name="line-18"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-19"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Happstack</span><span class='hs-varop'>.</span><span class='hs-conid'>Server</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-conid'>RFC822Headers</span>
<a name="line-20"></a> <span class='hs-layout'>(</span> <span class='hs-comment'>-- * Headers</span>
<a name="line-21"></a> <span class='hs-conid'>Header</span><span class='hs-layout'>,</span>
<a name="line-22"></a> <span class='hs-varid'>pHeader</span><span class='hs-layout'>,</span>
<a name="line-23"></a> <span class='hs-varid'>pHeaders</span><span class='hs-layout'>,</span>
<a name="line-24"></a> <span class='hs-varid'>parseHeaders</span><span class='hs-layout'>,</span>
<a name="line-25"></a>
<a name="line-26"></a> <span class='hs-comment'>-- * Content-type</span>
<a name="line-27"></a> <span class='hs-conid'>ContentType</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-28"></a> <span class='hs-varid'>getContentType</span><span class='hs-layout'>,</span>
<a name="line-29"></a> <span class='hs-varid'>parseContentType</span><span class='hs-layout'>,</span>
<a name="line-30"></a> <span class='hs-varid'>showContentType</span><span class='hs-layout'>,</span>
<a name="line-31"></a>
<a name="line-32"></a> <span class='hs-comment'>-- * Content-transfer-encoding</span>
<a name="line-33"></a> <span class='hs-conid'>ContentTransferEncoding</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-34"></a> <span class='hs-varid'>getContentTransferEncoding</span><span class='hs-layout'>,</span>
<a name="line-35"></a> <span class='hs-varid'>parseContentTransferEncoding</span><span class='hs-layout'>,</span>
<a name="line-36"></a>
<a name="line-37"></a> <span class='hs-comment'>-- * Content-disposition</span>
<a name="line-38"></a> <span class='hs-conid'>ContentDisposition</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-39"></a> <span class='hs-varid'>getContentDisposition</span><span class='hs-layout'>,</span>
<a name="line-40"></a> <span class='hs-varid'>parseContentDisposition</span><span class='hs-layout'>,</span>
<a name="line-41"></a>
<a name="line-42"></a> <span class='hs-comment'>-- * Utilities</span>
<a name="line-43"></a> <span class='hs-varid'>parseM</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'>Char</span>
<a name="line-47"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span>
<a name="line-48"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>ParserCombinators</span><span class='hs-varop'>.</span><span class='hs-conid'>Parsec</span>
<a name="line-49"></a>
<a name="line-50"></a><a name="Header"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Header</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span>
<a name="line-51"></a>
<a name="line-52"></a><a name="pHeaders"></a><span class='hs-definition'>pHeaders</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Header</span><span class='hs-keyglyph'>]</span>
<a name="line-53"></a><span class='hs-definition'>pHeaders</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>many</span> <span class='hs-varid'>pHeader</span>
<a name="line-54"></a>
<a name="line-55"></a><a name="parseHeaders"></a><span class='hs-definition'>parseHeaders</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>SourceName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Header</span><span class='hs-keyglyph'>]</span>
<a name="line-56"></a><span class='hs-definition'>parseHeaders</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>parseM</span> <span class='hs-varid'>pHeaders</span>
<a name="line-57"></a>
<a name="line-58"></a><a name="pHeader"></a><span class='hs-definition'>pHeader</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>Header</span>
<a name="line-59"></a><span class='hs-definition'>pHeader</span> <span class='hs-keyglyph'>=</span>
<a name="line-60"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>many1</span> <span class='hs-varid'>headerNameChar</span>
<a name="line-61"></a> <span class='hs-varid'>char</span> <span class='hs-chr'>':'</span>
<a name="line-62"></a> <span class='hs-varid'>many</span> <span class='hs-varid'>ws1</span>
<a name="line-63"></a> <span class='hs-varid'>line</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>lineString</span>
<a name="line-64"></a> <span class='hs-varid'>crLf</span>
<a name="line-65"></a> <span class='hs-varid'>extraLines</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>many</span> <span class='hs-varid'>extraFieldLine</span>
<a name="line-66"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span> <span class='hs-varid'>name</span><span class='hs-layout'>,</span> <span class='hs-varid'>concat</span> <span class='hs-layout'>(</span><span class='hs-varid'>line</span><span class='hs-conop'>:</span><span class='hs-varid'>extraLines</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-67"></a>
<a name="line-68"></a><a name="extraFieldLine"></a><span class='hs-definition'>extraFieldLine</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>String</span>
<a name="line-69"></a><span class='hs-definition'>extraFieldLine</span> <span class='hs-keyglyph'>=</span>
<a name="line-70"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>sp</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>ws1</span>
<a name="line-71"></a> <span class='hs-varid'>line</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>lineString</span>
<a name="line-72"></a> <span class='hs-varid'>crLf</span>
<a name="line-73"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>sp</span><span class='hs-conop'>:</span><span class='hs-varid'>line</span><span class='hs-layout'>)</span>
<a name="line-74"></a>
<a name="line-75"></a><span class='hs-comment'>--</span>
<a name="line-76"></a><span class='hs-comment'>-- * Parameters (for Content-type etc.)</span>
<a name="line-77"></a><span class='hs-comment'>--</span>
<a name="line-78"></a>
<a name="line-79"></a><a name="showParameters"></a><span class='hs-definition'>showParameters</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span><span class='hs-conid'>String</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-80"></a><span class='hs-definition'>showParameters</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concatMap</span> <span class='hs-varid'>f</span>
<a name="line-81"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>n</span><span class='hs-layout'>,</span><span class='hs-varid'>v</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"; "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>n</span> <span class='hs-varop'>++</span> <span class='hs-str'>"=\""</span> <span class='hs-varop'>++</span> <span class='hs-varid'>concatMap</span> <span class='hs-varid'>esc</span> <span class='hs-varid'>v</span> <span class='hs-varop'>++</span> <span class='hs-str'>"\""</span>
<a name="line-82"></a> <span class='hs-varid'>esc</span> <span class='hs-chr'>'\\'</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"\\\\"</span>
<a name="line-83"></a> <span class='hs-varid'>esc</span> <span class='hs-chr'>'"'</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"\\\""</span>
<a name="line-84"></a> <span class='hs-varid'>esc</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>c</span> <span class='hs-varop'>`elem`</span> <span class='hs-keyglyph'>[</span><span class='hs-chr'>'\\'</span><span class='hs-layout'>,</span><span class='hs-chr'>'"'</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>=</span> <span class='hs-chr'>'\\'</span><span class='hs-conop'>:</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>c</span><span class='hs-keyglyph'>]</span>
<a name="line-85"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>c</span><span class='hs-keyglyph'>]</span>
<a name="line-86"></a>
<a name="line-87"></a><a name="p_parameter"></a><span class='hs-definition'>p_parameter</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span><span class='hs-conid'>String</span><span class='hs-layout'>)</span>
<a name="line-88"></a><span class='hs-definition'>p_parameter</span> <span class='hs-keyglyph'>=</span>
<a name="line-89"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>lexeme</span> <span class='hs-varop'>$</span> <span class='hs-varid'>char</span> <span class='hs-chr'>';'</span>
<a name="line-90"></a> <span class='hs-varid'>p_name</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>lexeme</span> <span class='hs-varop'>$</span> <span class='hs-varid'>p_token</span>
<a name="line-91"></a> <span class='hs-varid'>lexeme</span> <span class='hs-varop'>$</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'='</span>
<a name="line-92"></a> <span class='hs-comment'>-- Workaround for seemingly standardized web browser bug</span>
<a name="line-93"></a> <span class='hs-comment'>-- where nothing is escaped in the filename parameter</span>
<a name="line-94"></a> <span class='hs-comment'>-- of the content-disposition header in multipart/form-data</span>
<a name="line-95"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>litStr</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>p_name</span> <span class='hs-varop'>==</span> <span class='hs-str'>"filename"</span>
<a name="line-96"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>buggyLiteralString</span>
<a name="line-97"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>literalString</span>
<a name="line-98"></a> <span class='hs-varid'>p_value</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>litStr</span> <span class='hs-varop'><|></span> <span class='hs-varid'>p_token</span>
<a name="line-99"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span> <span class='hs-varid'>p_name</span><span class='hs-layout'>,</span> <span class='hs-varid'>p_value</span><span class='hs-layout'>)</span>
<a name="line-100"></a>
<a name="line-101"></a>
<a name="line-102"></a><span class='hs-comment'>-- </span>
<a name="line-103"></a><span class='hs-comment'>-- * Content type</span>
<a name="line-104"></a><span class='hs-comment'>--</span>
<a name="line-105"></a>
<a name="line-106"></a><a name="ContentType"></a><span class='hs-comment'>-- | A MIME media type value.</span>
<a name="line-107"></a><a name="ContentType"></a><span class='hs-comment'>-- The 'Show' instance is derived automatically.</span>
<a name="line-108"></a><a name="ContentType"></a><span class='hs-comment'>-- Use 'showContentType' to obtain the standard</span>
<a name="line-109"></a><a name="ContentType"></a><span class='hs-comment'>-- string representation.</span>
<a name="line-110"></a><a name="ContentType"></a><span class='hs-comment'>-- See <<a href="http://www.ietf.org/rfc/rfc2046.txt">http://www.ietf.org/rfc/rfc2046.txt</a>> for more</span>
<a name="line-111"></a><a name="ContentType"></a><span class='hs-comment'>-- information about MIME media types.</span>
<a name="line-112"></a><a name="ContentType"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>ContentType</span> <span class='hs-keyglyph'>=</span>
<a name="line-113"></a> <span class='hs-conid'>ContentType</span> <span class='hs-layout'>{</span>
<a name="line-114"></a> <span class='hs-comment'>-- | The top-level media type, the general type</span>
<a name="line-115"></a> <span class='hs-comment'>-- of the data. Common examples are</span>
<a name="line-116"></a> <span class='hs-comment'>-- \"text\", \"image\", \"audio\", \"video\",</span>
<a name="line-117"></a> <span class='hs-comment'>-- \"multipart\", and \"application\".</span>
<a name="line-118"></a> <span class='hs-varid'>ctType</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span><span class='hs-layout'>,</span>
<a name="line-119"></a> <span class='hs-comment'>-- | The media subtype, the specific data format.</span>
<a name="line-120"></a> <span class='hs-comment'>-- Examples include \"plain\", \"html\",</span>
<a name="line-121"></a> <span class='hs-comment'>-- \"jpeg\", \"form-data\", etc.</span>
<a name="line-122"></a> <span class='hs-varid'>ctSubtype</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span><span class='hs-layout'>,</span>
<a name="line-123"></a> <span class='hs-comment'>-- | Media type parameters. On common example is</span>
<a name="line-124"></a> <span class='hs-comment'>-- the charset parameter for the \"text\" </span>
<a name="line-125"></a> <span class='hs-comment'>-- top-level type, e.g. @(\"charset\",\"ISO-8859-1\")@.</span>
<a name="line-126"></a> <span class='hs-varid'>ctParameters</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-127"></a> <span class='hs-layout'>}</span>
<a name="line-128"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Read</span><span class='hs-layout'>,</span> <span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span><span class='hs-layout'>)</span>
<a name="line-129"></a>
<a name="line-130"></a><a name="showContentType"></a><span class='hs-comment'>-- | Produce the standard string representation of a content-type,</span>
<a name="line-131"></a><span class='hs-comment'>-- e.g. \"text\/html; charset=ISO-8859-1\".</span>
<a name="line-132"></a><span class='hs-definition'>showContentType</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ContentType</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-133"></a><span class='hs-definition'>showContentType</span> <span class='hs-layout'>(</span><span class='hs-conid'>ContentType</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span> <span class='hs-varop'>++</span> <span class='hs-str'>"/"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>y</span> <span class='hs-varop'>++</span> <span class='hs-varid'>showParameters</span> <span class='hs-varid'>ps</span>
<a name="line-134"></a>
<a name="line-135"></a><a name="pContentType"></a><span class='hs-definition'>pContentType</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>ContentType</span>
<a name="line-136"></a><span class='hs-definition'>pContentType</span> <span class='hs-keyglyph'>=</span>
<a name="line-137"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>many</span> <span class='hs-varid'>ws1</span>
<a name="line-138"></a> <span class='hs-varid'>c_type</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>p_token</span>
<a name="line-139"></a> <span class='hs-varid'>lexeme</span> <span class='hs-varop'>$</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'/'</span>
<a name="line-140"></a> <span class='hs-varid'>c_subtype</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>lexeme</span> <span class='hs-varop'>$</span> <span class='hs-varid'>p_token</span>
<a name="line-141"></a> <span class='hs-varid'>c_parameters</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>many</span> <span class='hs-varid'>p_parameter</span>
<a name="line-142"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>ContentType</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span> <span class='hs-varid'>c_type</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span> <span class='hs-varid'>c_subtype</span><span class='hs-layout'>)</span> <span class='hs-varid'>c_parameters</span>
<a name="line-143"></a>
<a name="line-144"></a><a name="parseContentType"></a><span class='hs-comment'>-- | Parse the standard representation of a content-type.</span>
<a name="line-145"></a><span class='hs-comment'>-- If the input cannot be parsed, this function calls</span>
<a name="line-146"></a><span class='hs-comment'>-- 'fail' with a (hopefully) informative error message.</span>
<a name="line-147"></a><span class='hs-definition'>parseContentType</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>ContentType</span>
<a name="line-148"></a><span class='hs-definition'>parseContentType</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>parseM</span> <span class='hs-varid'>pContentType</span> <span class='hs-str'>"Content-type"</span>
<a name="line-149"></a>
<a name="line-150"></a><a name="getContentType"></a><span class='hs-definition'>getContentType</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Header</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>ContentType</span>
<a name="line-151"></a><span class='hs-definition'>getContentType</span> <span class='hs-varid'>hs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lookupM</span> <span class='hs-str'>"content-type"</span> <span class='hs-varid'>hs</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>parseContentType</span>
<a name="line-152"></a>
<a name="line-153"></a><span class='hs-comment'>--</span>
<a name="line-154"></a><span class='hs-comment'>-- * Content transfer encoding</span>
<a name="line-155"></a><span class='hs-comment'>--</span>
<a name="line-156"></a>
<a name="line-157"></a><a name="ContentTransferEncoding"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>ContentTransferEncoding</span> <span class='hs-keyglyph'>=</span>
<a name="line-158"></a> <span class='hs-conid'>ContentTransferEncoding</span> <span class='hs-conid'>String</span>
<a name="line-159"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Read</span><span class='hs-layout'>,</span> <span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span><span class='hs-layout'>)</span>
<a name="line-160"></a>
<a name="line-161"></a><a name="pContentTransferEncoding"></a><span class='hs-definition'>pContentTransferEncoding</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>ContentTransferEncoding</span>
<a name="line-162"></a><span class='hs-definition'>pContentTransferEncoding</span> <span class='hs-keyglyph'>=</span>
<a name="line-163"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>many</span> <span class='hs-varid'>ws1</span>
<a name="line-164"></a> <span class='hs-varid'>c_cte</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>p_token</span>
<a name="line-165"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>ContentTransferEncoding</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span> <span class='hs-varid'>c_cte</span><span class='hs-layout'>)</span>
<a name="line-166"></a>
<a name="line-167"></a><a name="parseContentTransferEncoding"></a><span class='hs-definition'>parseContentTransferEncoding</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>ContentTransferEncoding</span>
<a name="line-168"></a><span class='hs-definition'>parseContentTransferEncoding</span> <span class='hs-keyglyph'>=</span>
<a name="line-169"></a> <span class='hs-varid'>parseM</span> <span class='hs-varid'>pContentTransferEncoding</span> <span class='hs-str'>"Content-transfer-encoding"</span>
<a name="line-170"></a>
<a name="line-171"></a><a name="getContentTransferEncoding"></a><span class='hs-definition'>getContentTransferEncoding</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Header</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>ContentTransferEncoding</span>
<a name="line-172"></a><span class='hs-definition'>getContentTransferEncoding</span> <span class='hs-varid'>hs</span> <span class='hs-keyglyph'>=</span>
<a name="line-173"></a> <span class='hs-varid'>lookupM</span> <span class='hs-str'>"content-transfer-encoding"</span> <span class='hs-varid'>hs</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>parseContentTransferEncoding</span>
<a name="line-174"></a>
<a name="line-175"></a><span class='hs-comment'>--</span>
<a name="line-176"></a><span class='hs-comment'>-- * Content disposition</span>
<a name="line-177"></a><span class='hs-comment'>--</span>
<a name="line-178"></a>
<a name="line-179"></a><a name="ContentDisposition"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>ContentDisposition</span> <span class='hs-keyglyph'>=</span>
<a name="line-180"></a> <span class='hs-conid'>ContentDisposition</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-181"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Read</span><span class='hs-layout'>,</span> <span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span><span class='hs-layout'>)</span>
<a name="line-182"></a>
<a name="line-183"></a><a name="pContentDisposition"></a><span class='hs-definition'>pContentDisposition</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>ContentDisposition</span>
<a name="line-184"></a><span class='hs-definition'>pContentDisposition</span> <span class='hs-keyglyph'>=</span>
<a name="line-185"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>many</span> <span class='hs-varid'>ws1</span>
<a name="line-186"></a> <span class='hs-varid'>c_cd</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>p_token</span>
<a name="line-187"></a> <span class='hs-varid'>c_parameters</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>many</span> <span class='hs-varid'>p_parameter</span>
<a name="line-188"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>ContentDisposition</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span> <span class='hs-varid'>c_cd</span><span class='hs-layout'>)</span> <span class='hs-varid'>c_parameters</span>
<a name="line-189"></a>
<a name="line-190"></a><a name="parseContentDisposition"></a><span class='hs-definition'>parseContentDisposition</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>ContentDisposition</span>
<a name="line-191"></a><span class='hs-definition'>parseContentDisposition</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>parseM</span> <span class='hs-varid'>pContentDisposition</span> <span class='hs-str'>"Content-disposition"</span>
<a name="line-192"></a>
<a name="line-193"></a><a name="getContentDisposition"></a><span class='hs-definition'>getContentDisposition</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Header</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>ContentDisposition</span>
<a name="line-194"></a><span class='hs-definition'>getContentDisposition</span> <span class='hs-varid'>hs</span> <span class='hs-keyglyph'>=</span>
<a name="line-195"></a> <span class='hs-varid'>lookupM</span> <span class='hs-str'>"content-disposition"</span> <span class='hs-varid'>hs</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>parseContentDisposition</span>
<a name="line-196"></a>
<a name="line-197"></a><span class='hs-comment'>--</span>
<a name="line-198"></a><span class='hs-comment'>-- * Utilities</span>
<a name="line-199"></a><span class='hs-comment'>--</span>
<a name="line-200"></a>
<a name="line-201"></a><a name="parseM"></a><span class='hs-definition'>parseM</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SourceName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-varid'>a</span>
<a name="line-202"></a><span class='hs-definition'>parseM</span> <span class='hs-varid'>p</span> <span class='hs-varid'>n</span> <span class='hs-varid'>inp</span> <span class='hs-keyglyph'>=</span>
<a name="line-203"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>parse</span> <span class='hs-varid'>p</span> <span class='hs-varid'>n</span> <span class='hs-varid'>inp</span> <span class='hs-keyword'>of</span>
<a name="line-204"></a> <span class='hs-conid'>Left</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fail</span> <span class='hs-layout'>(</span><span class='hs-varid'>show</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span>
<a name="line-205"></a> <span class='hs-conid'>Right</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span>
<a name="line-206"></a>
<a name="line-207"></a><a name="lookupM"></a><span class='hs-definition'>lookupM</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span><span class='hs-layout'>,</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-varid'>b</span>
<a name="line-208"></a><span class='hs-definition'>lookupM</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>fail</span> <span class='hs-layout'>(</span><span class='hs-str'>"No such field: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-varid'>lookup</span> <span class='hs-varid'>n</span>
<a name="line-209"></a>
<a name="line-210"></a><span class='hs-comment'>-- </span>
<a name="line-211"></a><span class='hs-comment'>-- * Parsing utilities</span>
<a name="line-212"></a><span class='hs-comment'>--</span>
<a name="line-213"></a>
<a name="line-214"></a><a name="ws1"></a><span class='hs-comment'>-- | RFC 822 LWSP-char</span>
<a name="line-215"></a><span class='hs-definition'>ws1</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>Char</span>
<a name="line-216"></a><span class='hs-definition'>ws1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>oneOf</span> <span class='hs-str'>" \t"</span>
<a name="line-217"></a>
<a name="line-218"></a><a name="lexeme"></a><span class='hs-definition'>lexeme</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>a</span>
<a name="line-219"></a><span class='hs-definition'>lexeme</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>p</span><span class='hs-layout'>;</span> <span class='hs-varid'>many</span> <span class='hs-varid'>ws1</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span>
<a name="line-220"></a>
<a name="line-221"></a><a name="crLf"></a><span class='hs-comment'>-- | RFC 822 CRLF (but more permissive)</span>
<a name="line-222"></a><span class='hs-definition'>crLf</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>String</span>
<a name="line-223"></a><span class='hs-definition'>crLf</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>try</span> <span class='hs-layout'>(</span><span class='hs-varid'>string</span> <span class='hs-str'>"\n\r"</span> <span class='hs-varop'><|></span> <span class='hs-varid'>string</span> <span class='hs-str'>"\r\n"</span><span class='hs-layout'>)</span> <span class='hs-varop'><|></span> <span class='hs-varid'>string</span> <span class='hs-str'>"\n"</span> <span class='hs-varop'><|></span> <span class='hs-varid'>string</span> <span class='hs-str'>"\r"</span>
<a name="line-224"></a>
<a name="line-225"></a><a name="lineString"></a><span class='hs-comment'>-- | One line</span>
<a name="line-226"></a><span class='hs-definition'>lineString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>String</span>
<a name="line-227"></a><span class='hs-definition'>lineString</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>many</span> <span class='hs-layout'>(</span><span class='hs-varid'>noneOf</span> <span class='hs-str'>"\n\r"</span><span class='hs-layout'>)</span>
<a name="line-228"></a>
<a name="line-229"></a><a name="literalString"></a><span class='hs-definition'>literalString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>String</span>
<a name="line-230"></a><span class='hs-definition'>literalString</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'\"'</span>
<a name="line-231"></a> <span class='hs-varid'>str</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>many</span> <span class='hs-layout'>(</span><span class='hs-varid'>noneOf</span> <span class='hs-str'>"\"\\"</span> <span class='hs-varop'><|></span> <span class='hs-varid'>quoted_pair</span><span class='hs-layout'>)</span>
<a name="line-232"></a> <span class='hs-varid'>char</span> <span class='hs-chr'>'\"'</span>
<a name="line-233"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>str</span>
<a name="line-234"></a>
<a name="line-235"></a><a name="buggyLiteralString"></a><span class='hs-comment'>-- No web browsers seem to implement RFC 2046 correctly,</span>
<a name="line-236"></a><span class='hs-comment'>-- since they do not escape double quotes and backslashes</span>
<a name="line-237"></a><span class='hs-comment'>-- in the filename parameter in multipart/form-data.</span>
<a name="line-238"></a><span class='hs-comment'>--</span>
<a name="line-239"></a><span class='hs-comment'>-- Note that this eats everything until the last double quote on the line.</span>
<a name="line-240"></a><span class='hs-definition'>buggyLiteralString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>String</span>
<a name="line-241"></a><span class='hs-definition'>buggyLiteralString</span> <span class='hs-keyglyph'>=</span>
<a name="line-242"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'\"'</span>
<a name="line-243"></a> <span class='hs-varid'>str</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>manyTill</span> <span class='hs-varid'>anyChar</span> <span class='hs-layout'>(</span><span class='hs-varid'>try</span> <span class='hs-varid'>lastQuote</span><span class='hs-layout'>)</span>
<a name="line-244"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>str</span>
<a name="line-245"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>lastQuote</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'\"'</span>
<a name="line-246"></a> <span class='hs-varid'>notFollowedBy</span> <span class='hs-layout'>(</span><span class='hs-varid'>try</span> <span class='hs-layout'>(</span><span class='hs-varid'>many</span> <span class='hs-layout'>(</span><span class='hs-varid'>noneOf</span> <span class='hs-str'>"\""</span><span class='hs-layout'>)</span> <span class='hs-varop'>>></span> <span class='hs-varid'>char</span> <span class='hs-chr'>'\"'</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-247"></a>
<a name="line-248"></a><a name="headerNameChar"></a><span class='hs-definition'>headerNameChar</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>Char</span>
<a name="line-249"></a><span class='hs-definition'>headerNameChar</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>noneOf</span> <span class='hs-str'>"\n\r:"</span>
<a name="line-250"></a>
<a name="line-251"></a><a name="tspecials"></a><span class='hs-definition'>tspecials</span><span class='hs-layout'>,</span> <span class='hs-varid'>tokenchar</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Char</span><span class='hs-keyglyph'>]</span>
<a name="line-252"></a><span class='hs-definition'>tspecials</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"()<>@,;:\\\"/[]?="</span> <span class='hs-comment'>-- RFC2045</span>
<a name="line-253"></a><a name="tokenchar"></a><span class='hs-definition'>tokenchar</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~"</span> <span class='hs-varop'>\\</span> <span class='hs-varid'>tspecials</span>
<a name="line-254"></a>
<a name="line-255"></a><a name="p_token"></a><span class='hs-definition'>p_token</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>String</span>
<a name="line-256"></a><span class='hs-definition'>p_token</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>many1</span> <span class='hs-layout'>(</span><span class='hs-varid'>oneOf</span> <span class='hs-varid'>tokenchar</span><span class='hs-layout'>)</span>
<a name="line-257"></a>
<a name="line-258"></a><a name="text_chars"></a><span class='hs-definition'>text_chars</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Char</span><span class='hs-keyglyph'>]</span>
<a name="line-259"></a><span class='hs-definition'>text_chars</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>chr</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-num'>1</span><span class='hs-keyglyph'>..</span><span class='hs-num'>9</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>11</span><span class='hs-layout'>,</span><span class='hs-num'>12</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>14</span><span class='hs-keyglyph'>..</span><span class='hs-num'>127</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-260"></a>
<a name="line-261"></a><a name="p_text"></a><span class='hs-definition'>p_text</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>Char</span>
<a name="line-262"></a><span class='hs-definition'>p_text</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>oneOf</span> <span class='hs-varid'>text_chars</span>
<a name="line-263"></a>
<a name="line-264"></a><a name="quoted_pair"></a><span class='hs-definition'>quoted_pair</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>Char</span>
<a name="line-265"></a><span class='hs-definition'>quoted_pair</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'\\'</span>
<a name="line-266"></a> <span class='hs-varid'>p_text</span>
</pre></body>
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