hxt-8.0.0: doc/hdoc/src/Text-XML-HXT-Validator-AttributeValueValidation.html
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<pre><a name="line-1"></a><span class='comment'>-- |</span>
<a name="line-2"></a><span class='comment'>-- This module provides functions for validating attributes.</span>
<a name="line-3"></a>
<a name="line-4"></a><span class='comment'>-- The main functions are:</span>
<a name="line-5"></a><span class='comment'>--</span>
<a name="line-6"></a><span class='comment'>-- - Check if the attribute value meets the lexical constraints of its type</span>
<a name="line-7"></a><span class='comment'>--</span>
<a name="line-8"></a><span class='comment'>-- - Normalization of an attribute value</span>
<a name="line-9"></a><span class='comment'>--</span>
<a name="line-10"></a>
<a name="line-11"></a><span class='comment'>-- Special namings in source code:</span>
<a name="line-12"></a><span class='comment'>--</span>
<a name="line-13"></a><span class='comment'>-- - nd - XDTD node</span>
<a name="line-14"></a><span class='comment'>--</span>
<a name="line-15"></a><span class='comment'>-- - n - XTag node</span>
<a name="line-16"></a><span class='comment'>--</span>
<a name="line-17"></a><span class='comment'>-- Version : $Id: AttributeValueValidation.hs,v 1.1 2004/09/02 19:12:02 hxml Exp $</span>
<a name="line-18"></a><span class='comment'>--</span>
<a name="line-19"></a><span class='keyword'>module</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>XML</span><span class='varop'>.</span><span class='conid'>HXT</span><span class='varop'>.</span><span class='conid'>Validator</span><span class='varop'>.</span><span class='conid'>AttributeValueValidation</span>
<a name="line-20"></a> <span class='layout'>(</span> <span class='varid'>checkAttributeValue</span>
<a name="line-21"></a> <span class='layout'>,</span> <span class='varid'>normalizeAttributeValue</span>
<a name="line-22"></a> <span class='layout'>)</span>
<a name="line-23"></a><span class='keyword'>where</span>
<a name="line-24"></a>
<a name="line-25"></a><span class='keyword'>import</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>XML</span><span class='varop'>.</span><span class='conid'>HXT</span><span class='varop'>.</span><span class='conid'>Parser</span><span class='varop'>.</span><span class='conid'>XmlParser</span>
<a name="line-26"></a> <span class='layout'>(</span> <span class='varid'>parseNMToken</span>
<a name="line-27"></a> <span class='layout'>,</span> <span class='varid'>parseName</span>
<a name="line-28"></a> <span class='layout'>)</span>
<a name="line-29"></a>
<a name="line-30"></a><span class='keyword'>import</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>XML</span><span class='varop'>.</span><span class='conid'>HXT</span><span class='varop'>.</span><span class='conid'>DOM</span><span class='varop'>.</span><span class='conid'>XmlTree</span>
<a name="line-31"></a><span class='keyword'>import</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>XML</span><span class='varop'>.</span><span class='conid'>HXT</span><span class='varop'>.</span><span class='conid'>DOM</span><span class='varop'>.</span><span class='conid'>Util</span>
<a name="line-32"></a>
<a name="line-33"></a><span class='comment'>-- |</span>
<a name="line-34"></a><span class='comment'>-- Checks if the attribute value meets the lexical constraints of its type.</span>
<a name="line-35"></a><span class='comment'>--</span>
<a name="line-36"></a><span class='comment'>-- * 1.parameter dtdPart : the children of the @DOCTYPE@ node</span>
<a name="line-37"></a><span class='comment'>--</span>
<a name="line-38"></a><span class='comment'>-- - 2.parameter attrDecl : the declaration of the attribute from the DTD</span>
<a name="line-39"></a><span class='comment'>--</span>
<a name="line-40"></a><span class='comment'>-- - returns : a function which takes an element (XTag or XDTD ATTLIST),</span>
<a name="line-41"></a><span class='comment'>-- checks if the attribute value meets the lexical constraints</span>
<a name="line-42"></a><span class='comment'>-- of its type and returns a list of errors</span>
<a name="line-43"></a>
<a name="line-44"></a><a name="checkAttributeValue"></a><span class='definition'>checkAttributeValue</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>XmlFilter</span>
<a name="line-45"></a><span class='definition'>checkAttributeValue</span> <span class='varid'>dtdPart</span> <span class='varid'>attrDecl</span><span class='keyglyph'>@</span><span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='conid'>ATTLIST</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span> <span class='varid'>n</span><span class='keyglyph'>@</span><span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XTag</span> <span class='keyword'>_</span> <span class='sel'>_al'</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span>
<a name="line-46"></a> <span class='keyglyph'>=</span> <span class='varid'>checkValue</span> <span class='varid'>attrType</span> <span class='varid'>dtdPart</span> <span class='varid'>normalizedVal</span> <span class='varid'>attrDecl</span> <span class='varid'>n</span>
<a name="line-47"></a> <span class='keyword'>where</span>
<a name="line-48"></a> <span class='varid'>attrType</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_type</span> <span class='varid'>al</span>
<a name="line-49"></a> <span class='varid'>attrValue</span> <span class='keyglyph'>=</span> <span class='varid'>valueOf</span> <span class='layout'>(</span><span class='varid'>getAttrName</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varid'>n</span>
<a name="line-50"></a> <span class='varid'>normalizedVal</span> <span class='keyglyph'>=</span> <span class='varid'>normalizeAttributeValue</span> <span class='layout'>(</span><span class='conid'>Just</span> <span class='varid'>attrDecl</span><span class='layout'>)</span> <span class='varid'>attrValue</span>
<a name="line-51"></a>
<a name="line-52"></a><span class='definition'>checkAttributeValue</span> <span class='varid'>dtdPart</span> <span class='varid'>attrDecl</span><span class='keyglyph'>@</span><span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='conid'>ATTLIST</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span> <span class='varid'>n</span><span class='keyglyph'>@</span><span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='conid'>ATTLIST</span> <span class='varid'>al'</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span>
<a name="line-53"></a> <span class='keyglyph'>=</span> <span class='varid'>checkValue</span> <span class='varid'>attrType</span> <span class='varid'>dtdPart</span> <span class='varid'>normalizedVal</span> <span class='varid'>attrDecl</span> <span class='varid'>n</span>
<a name="line-54"></a> <span class='keyword'>where</span>
<a name="line-55"></a> <span class='varid'>attrType</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_type</span> <span class='varid'>al</span>
<a name="line-56"></a> <span class='varid'>attrValue</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_default</span> <span class='varid'>al'</span>
<a name="line-57"></a> <span class='varid'>normalizedVal</span> <span class='keyglyph'>=</span> <span class='varid'>normalizeAttributeValue</span> <span class='layout'>(</span><span class='conid'>Just</span> <span class='varid'>attrDecl</span><span class='layout'>)</span> <span class='varid'>attrValue</span>
<a name="line-58"></a>
<a name="line-59"></a><span class='definition'>checkAttributeValue</span> <span class='keyword'>_</span> <span class='varid'>nd</span> <span class='varid'>n</span>
<a name="line-60"></a> <span class='keyglyph'>=</span> <span class='varid'>error</span> <span class='layout'>(</span><span class='str'>"checkAttributeValue: illegeal parameter:\n"</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>nd</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>n</span><span class='layout'>)</span>
<a name="line-61"></a>
<a name="line-62"></a>
<a name="line-63"></a><span class='comment'>-- |</span>
<a name="line-64"></a><span class='comment'>-- Dispatches the attibute check by the attribute type.</span>
<a name="line-65"></a><span class='comment'>--</span>
<a name="line-66"></a><span class='comment'>-- * 1.parameter typ : the attribute type</span>
<a name="line-67"></a><span class='comment'>--</span>
<a name="line-68"></a><span class='comment'>-- - 2.parameter dtdPart : the children of the @DOCTYPE@ node</span>
<a name="line-69"></a><span class='comment'>--</span>
<a name="line-70"></a><span class='comment'>-- - 3.parameter attrValue : the normalized attribute value to be checked</span>
<a name="line-71"></a><span class='comment'>--</span>
<a name="line-72"></a><span class='comment'>-- - 4.parameter attrDecl : the declaration of the attribute from the DTD</span>
<a name="line-73"></a><span class='comment'>--</span>
<a name="line-74"></a><span class='comment'>-- - returns : a functions which takes an element (XTag or XDTD ATTLIST),</span>
<a name="line-75"></a><span class='comment'>-- checks if the attribute value meets the lexical constraints</span>
<a name="line-76"></a><span class='comment'>-- of its type and returns a list of errors</span>
<a name="line-77"></a>
<a name="line-78"></a><a name="checkValue"></a><span class='definition'>checkValue</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>XmlFilter</span>
<a name="line-79"></a><span class='definition'>checkValue</span> <span class='varid'>typ</span> <span class='varid'>dtdPart</span> <span class='varid'>attrValue</span> <span class='varid'>attrDecl</span>
<a name="line-80"></a> <span class='keyglyph'>|</span> <span class='varid'>typ</span> <span class='varop'>==</span> <span class='varid'>k_cdata</span> <span class='keyglyph'>=</span> <span class='varid'>none</span>
<a name="line-81"></a> <span class='keyglyph'>|</span> <span class='varid'>typ</span> <span class='varop'>==</span> <span class='varid'>k_enumeration</span> <span class='keyglyph'>=</span> <span class='varid'>checkValueEnumeration</span> <span class='varid'>attrDecl</span> <span class='varid'>attrValue</span>
<a name="line-82"></a> <span class='keyglyph'>|</span> <span class='varid'>typ</span> <span class='varop'>==</span> <span class='varid'>k_entity</span> <span class='keyglyph'>=</span> <span class='varid'>checkValueEntity</span> <span class='varid'>dtdPart</span> <span class='varid'>attrDecl</span> <span class='varid'>attrValue</span>
<a name="line-83"></a> <span class='keyglyph'>|</span> <span class='varid'>typ</span> <span class='varop'>==</span> <span class='varid'>k_entities</span> <span class='keyglyph'>=</span> <span class='varid'>checkValueEntities</span> <span class='varid'>dtdPart</span> <span class='varid'>attrDecl</span> <span class='varid'>attrValue</span>
<a name="line-84"></a> <span class='keyglyph'>|</span> <span class='varid'>typ</span> <span class='varop'>==</span> <span class='varid'>k_id</span> <span class='keyglyph'>=</span> <span class='varid'>checkValueId</span> <span class='varid'>attrDecl</span> <span class='varid'>attrValue</span>
<a name="line-85"></a> <span class='keyglyph'>|</span> <span class='varid'>typ</span> <span class='varop'>==</span> <span class='varid'>k_idref</span> <span class='keyglyph'>=</span> <span class='varid'>checkValueIdref</span> <span class='varid'>attrDecl</span> <span class='varid'>attrValue</span>
<a name="line-86"></a> <span class='keyglyph'>|</span> <span class='varid'>typ</span> <span class='varop'>==</span> <span class='varid'>k_idrefs</span> <span class='keyglyph'>=</span> <span class='varid'>checkValueIdrefs</span> <span class='varid'>attrDecl</span> <span class='varid'>attrValue</span>
<a name="line-87"></a> <span class='keyglyph'>|</span> <span class='varid'>typ</span> <span class='varop'>==</span> <span class='varid'>k_nmtoken</span> <span class='keyglyph'>=</span> <span class='varid'>checkValueNmtoken</span> <span class='varid'>attrDecl</span> <span class='varid'>attrValue</span>
<a name="line-88"></a> <span class='keyglyph'>|</span> <span class='varid'>typ</span> <span class='varop'>==</span> <span class='varid'>k_nmtokens</span> <span class='keyglyph'>=</span> <span class='varid'>checkValueNmtokens</span> <span class='varid'>attrDecl</span> <span class='varid'>attrValue</span>
<a name="line-89"></a> <span class='keyglyph'>|</span> <span class='varid'>typ</span> <span class='varop'>==</span> <span class='varid'>k_notation</span> <span class='keyglyph'>=</span> <span class='varid'>checkValueEnumeration</span> <span class='varid'>attrDecl</span> <span class='varid'>attrValue</span>
<a name="line-90"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span> <span class='keyglyph'>=</span> <span class='varid'>error</span> <span class='layout'>(</span><span class='str'>"Attribute type "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>typ</span> <span class='varop'>++</span> <span class='str'>" unknown."</span><span class='layout'>)</span>
<a name="line-91"></a>
<a name="line-92"></a><span class='comment'>-- |</span>
<a name="line-93"></a><span class='comment'>-- Checks the value of Enumeration attribute types. (3.3.1 \/ p.27 in Spec)</span>
<a name="line-94"></a><span class='comment'>--</span>
<a name="line-95"></a><span class='comment'>-- * 1.parameter attrDecl : the declaration of the attribute from the DTD</span>
<a name="line-96"></a><span class='comment'>--</span>
<a name="line-97"></a><span class='comment'>-- - 2.parameter attrValue : the normalized attribute value to be checked</span>
<a name="line-98"></a>
<a name="line-99"></a><a name="checkValueEnumeration"></a><span class='definition'>checkValueEnumeration</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>XmlFilter</span>
<a name="line-100"></a><span class='definition'>checkValueEnumeration</span> <span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='conid'>ATTLIST</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varid'>cs</span><span class='layout'>)</span> <span class='varid'>attrValue</span>
<a name="line-101"></a> <span class='keyglyph'>=</span> <span class='keyword'>if</span> <span class='varid'>attrValue</span> <span class='varop'>`elem`</span> <span class='varid'>enumVals</span>
<a name="line-102"></a> <span class='keyword'>then</span> <span class='varid'>none</span>
<a name="line-103"></a> <span class='keyword'>else</span> <span class='varid'>err</span> <span class='layout'>(</span><span class='str'>"Attribute "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='layout'>(</span><span class='varid'>getAttrName</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varop'>++</span> <span class='str'>" for element "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='layout'>(</span><span class='varid'>getElemName</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varop'>++</span>
<a name="line-104"></a> <span class='str'>" must have a value from list "</span><span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>enumVals</span> <span class='varop'>++</span> <span class='str'>"."</span><span class='layout'>)</span>
<a name="line-105"></a> <span class='keyword'>where</span>
<a name="line-106"></a> <span class='varid'>enumVals</span> <span class='keyglyph'>::</span> <span class='keyglyph'>[</span><span class='conid'>String</span><span class='keyglyph'>]</span>
<a name="line-107"></a> <span class='varid'>enumVals</span> <span class='keyglyph'>=</span> <span class='varid'>map</span> <span class='layout'>(</span><span class='varid'>getEnumVal</span><span class='layout'>)</span> <span class='varid'>cs</span>
<a name="line-108"></a>
<a name="line-109"></a> <span class='varid'>getEnumVal</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-110"></a> <span class='varid'>getEnumVal</span> <span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='conid'>NAME</span> <span class='varid'>al'</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_name</span> <span class='varid'>al'</span>
<a name="line-111"></a> <span class='varid'>getEnumVal</span> <span class='keyword'>_</span> <span class='keyglyph'>=</span> <span class='str'>""</span>
<a name="line-112"></a>
<a name="line-113"></a><span class='definition'>checkValueEnumeration</span> <span class='varid'>n</span> <span class='keyword'>_</span>
<a name="line-114"></a> <span class='keyglyph'>=</span> <span class='varid'>error</span> <span class='layout'>(</span><span class='str'>"checkValueEnumeration: illegeal parameter:\n"</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>n</span><span class='layout'>)</span>
<a name="line-115"></a>
<a name="line-116"></a>
<a name="line-117"></a><span class='comment'>-- |</span>
<a name="line-118"></a><span class='comment'>-- Checks the value of ENTITY attribute types. (3.3.1 \/ p.26 in Spec)</span>
<a name="line-119"></a><span class='comment'>--</span>
<a name="line-120"></a><span class='comment'>-- * 1.parameter dtdPart : the children of the @DOCTYPE@ node, to get the</span>
<a name="line-121"></a><span class='comment'>-- unparsed entity declarations</span>
<a name="line-122"></a><span class='comment'>--</span>
<a name="line-123"></a><span class='comment'>-- - 2.parameter attrDecl : the declaration of the attribute from the DTD</span>
<a name="line-124"></a><span class='comment'>--</span>
<a name="line-125"></a><span class='comment'>-- - 3.parameter attrValue : the normalized attribute value to be checked</span>
<a name="line-126"></a>
<a name="line-127"></a><a name="checkValueEntity"></a><span class='definition'>checkValueEntity</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>XmlFilter</span>
<a name="line-128"></a><span class='definition'>checkValueEntity</span> <span class='varid'>dtdPart</span> <span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='conid'>ATTLIST</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span> <span class='varid'>attrValue</span>
<a name="line-129"></a> <span class='keyglyph'>=</span> <span class='keyword'>if</span> <span class='varid'>attrValue</span> <span class='varop'>`elem`</span> <span class='varid'>upEntities</span>
<a name="line-130"></a> <span class='keyword'>then</span> <span class='varid'>none</span>
<a name="line-131"></a> <span class='keyword'>else</span> <span class='varid'>err</span> <span class='layout'>(</span><span class='str'>"Entity "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>attrValue</span> <span class='varop'>++</span> <span class='str'>" of attribute "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='layout'>(</span><span class='varid'>getAttrName</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varop'>++</span>
<a name="line-132"></a> <span class='str'>" for element "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='layout'>(</span><span class='varid'>getElemName</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varop'>++</span> <span class='str'>" is not unparsed. "</span> <span class='varop'>++</span>
<a name="line-133"></a> <span class='str'>"The following unparsed entities exist: "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>upEntities</span> <span class='varop'>++</span> <span class='str'>"."</span><span class='layout'>)</span>
<a name="line-134"></a> <span class='keyword'>where</span>
<a name="line-135"></a> <span class='varid'>upEntities</span> <span class='keyglyph'>::</span> <span class='keyglyph'>[</span><span class='conid'>String</span><span class='keyglyph'>]</span>
<a name="line-136"></a> <span class='varid'>upEntities</span> <span class='keyglyph'>=</span> <span class='varid'>map</span> <span class='layout'>(</span><span class='varid'>getEnumVal</span><span class='layout'>)</span> <span class='layout'>(</span><span class='varid'>isUnparsedEntity</span> <span class='varop'>$$</span> <span class='varid'>dtdPart</span><span class='layout'>)</span>
<a name="line-137"></a>
<a name="line-138"></a> <span class='varid'>getEnumVal</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-139"></a> <span class='varid'>getEnumVal</span> <span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='conid'>ENTITY</span> <span class='varid'>al'</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_name</span> <span class='varid'>al'</span>
<a name="line-140"></a> <span class='varid'>getEnumVal</span> <span class='keyword'>_</span> <span class='keyglyph'>=</span> <span class='str'>""</span>
<a name="line-141"></a>
<a name="line-142"></a>
<a name="line-143"></a><span class='definition'>checkValueEntity</span> <span class='keyword'>_</span> <span class='varid'>n</span> <span class='keyword'>_</span>
<a name="line-144"></a> <span class='keyglyph'>=</span> <span class='varid'>error</span> <span class='layout'>(</span><span class='str'>"checkValueEntity: illegeal parameter:\n"</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>n</span><span class='layout'>)</span>
<a name="line-145"></a>
<a name="line-146"></a>
<a name="line-147"></a><span class='comment'>-- |</span>
<a name="line-148"></a><span class='comment'>-- Checks the value of ENTITIES attribute types. (3.3.1 \/ p.26 in Spec)</span>
<a name="line-149"></a><span class='comment'>--</span>
<a name="line-150"></a><span class='comment'>-- * 1.parameter dtdPart : the children of the @DOCTYPE@ node, to get the</span>
<a name="line-151"></a><span class='comment'>-- unparsed entity declarations</span>
<a name="line-152"></a><span class='comment'>--</span>
<a name="line-153"></a><span class='comment'>-- - 2.parameter attrDecl : the declaration of the attribute from the DTD</span>
<a name="line-154"></a><span class='comment'>--</span>
<a name="line-155"></a><span class='comment'>-- - 3.parameter attrValue : the normalized attribute value to be checked</span>
<a name="line-156"></a>
<a name="line-157"></a><a name="checkValueEntities"></a><span class='definition'>checkValueEntities</span> <span class='keyglyph'>::</span><span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>XmlFilter</span>
<a name="line-158"></a><span class='definition'>checkValueEntities</span> <span class='varid'>dtdPart</span> <span class='varid'>attrDecl</span><span class='keyglyph'>@</span><span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='conid'>ATTLIST</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span> <span class='varid'>attrValue</span>
<a name="line-159"></a> <span class='keyglyph'>=</span> <span class='keyword'>if</span> <span class='varid'>null</span> <span class='varid'>valueList</span>
<a name="line-160"></a> <span class='keyword'>then</span> <span class='varid'>err</span> <span class='layout'>(</span><span class='str'>"Attribute "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='layout'>(</span><span class='varid'>getAttrName</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varop'>++</span> <span class='str'>" of element "</span> <span class='varop'>++</span>
<a name="line-161"></a> <span class='varid'>show</span> <span class='layout'>(</span><span class='varid'>getElemName</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varop'>++</span> <span class='str'>" must be one or more names."</span><span class='layout'>)</span>
<a name="line-162"></a> <span class='keyword'>else</span> <span class='varid'>cat</span> <span class='layout'>(</span><span class='varid'>map</span> <span class='layout'>(</span><span class='varid'>checkValueEntity</span> <span class='varid'>dtdPart</span> <span class='varid'>attrDecl</span><span class='layout'>)</span> <span class='varid'>valueList</span><span class='layout'>)</span>
<a name="line-163"></a> <span class='keyword'>where</span>
<a name="line-164"></a> <span class='varid'>valueList</span> <span class='keyglyph'>=</span> <span class='varid'>words</span> <span class='varid'>attrValue</span>
<a name="line-165"></a>
<a name="line-166"></a><span class='definition'>checkValueEntities</span> <span class='keyword'>_</span> <span class='varid'>n</span> <span class='keyword'>_</span>
<a name="line-167"></a> <span class='keyglyph'>=</span> <span class='varid'>error</span> <span class='layout'>(</span><span class='str'>"checkValueEntities: illegeal parameter:\n"</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>n</span><span class='layout'>)</span>
<a name="line-168"></a>
<a name="line-169"></a>
<a name="line-170"></a><span class='comment'>-- |</span>
<a name="line-171"></a><span class='comment'>-- Checks the value of NMTOKEN attribute types. (3.3.1 \/ p.26 in Spec)</span>
<a name="line-172"></a><span class='comment'>--</span>
<a name="line-173"></a><span class='comment'>-- * 1.parameter attrDecl : the declaration of the attribute from the DTD</span>
<a name="line-174"></a><span class='comment'>--</span>
<a name="line-175"></a><span class='comment'>-- - 2.parameter attrValue : the normalized attribute value to be checked</span>
<a name="line-176"></a>
<a name="line-177"></a><a name="checkValueNmtoken"></a><span class='definition'>checkValueNmtoken</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>XmlFilter</span>
<a name="line-178"></a><span class='definition'>checkValueNmtoken</span> <span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='conid'>ATTLIST</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span> <span class='varid'>attrValue</span>
<a name="line-179"></a> <span class='keyglyph'>=</span> <span class='varid'>checkNmtoken</span> <span class='varid'>parseRes</span>
<a name="line-180"></a> <span class='keyword'>where</span>
<a name="line-181"></a> <span class='varid'>parseRes</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</span>
<a name="line-182"></a> <span class='varid'>parseRes</span> <span class='keyglyph'>=</span> <span class='varid'>parseNMToken</span> <span class='str'>""</span> <span class='layout'>(</span><span class='varid'>mkXTextTree</span> <span class='varid'>attrValue</span><span class='layout'>)</span>
<a name="line-183"></a>
<a name="line-184"></a> <span class='varid'>checkNmtoken</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>XmlFilter</span>
<a name="line-185"></a> <span class='varid'>checkNmtoken</span> <span class='layout'>(</span><span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XError</span> <span class='keyword'>_</span> <span class='varid'>s</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span><span class='conop'>:</span><span class='keyword'>_</span><span class='layout'>)</span>
<a name="line-186"></a> <span class='keyglyph'>=</span> <span class='varid'>err</span> <span class='layout'>(</span><span class='str'>"Attribute value "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>attrValue</span> <span class='varop'>++</span> <span class='str'>" of attribute "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='layout'>(</span><span class='varid'>getAttrName</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varop'>++</span>
<a name="line-187"></a> <span class='str'>" for element "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='layout'>(</span><span class='varid'>getElemName</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varop'>++</span> <span class='str'>" must be a name token, "</span><span class='varop'>++</span> <span class='layout'>(</span><span class='varid'>lines</span> <span class='varid'>s</span><span class='layout'>)</span> <span class='varop'>!!</span> <span class='num'>1</span> <span class='varop'>++</span><span class='str'>"."</span><span class='layout'>)</span>
<a name="line-188"></a>
<a name="line-189"></a> <span class='varid'>checkNmtoken</span> <span class='keyword'>_</span> <span class='keyglyph'>=</span> <span class='varid'>none</span>
<a name="line-190"></a>
<a name="line-191"></a>
<a name="line-192"></a><span class='definition'>checkValueNmtoken</span> <span class='varid'>n</span> <span class='keyword'>_</span>
<a name="line-193"></a> <span class='keyglyph'>=</span> <span class='varid'>error</span> <span class='layout'>(</span><span class='str'>"checkValueNmtoken: illegeal parameter:\n"</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>n</span><span class='layout'>)</span>
<a name="line-194"></a>
<a name="line-195"></a>
<a name="line-196"></a><span class='comment'>-- |</span>
<a name="line-197"></a><span class='comment'>-- Checks the value of NMTOKENS attribute types. (3.3.1 \/ p.26 in Spec)</span>
<a name="line-198"></a><span class='comment'>--</span>
<a name="line-199"></a><span class='comment'>-- * 1.parameter attrDecl : the declaration of the attribute from the DTD</span>
<a name="line-200"></a><span class='comment'>--</span>
<a name="line-201"></a><span class='comment'>-- - 2.parameter attrValue : the normalized attribute value to be checked</span>
<a name="line-202"></a>
<a name="line-203"></a><a name="checkValueNmtokens"></a><span class='definition'>checkValueNmtokens</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>XmlFilter</span>
<a name="line-204"></a><span class='definition'>checkValueNmtokens</span> <span class='varid'>attrDecl</span><span class='keyglyph'>@</span><span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='conid'>ATTLIST</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span> <span class='varid'>attrValue</span>
<a name="line-205"></a> <span class='keyglyph'>=</span> <span class='keyword'>if</span> <span class='varid'>null</span> <span class='varid'>valueList</span>
<a name="line-206"></a> <span class='keyword'>then</span> <span class='varid'>err</span> <span class='layout'>(</span><span class='str'>"Attribute "</span><span class='varop'>++</span> <span class='varid'>show</span> <span class='layout'>(</span><span class='varid'>getAttrName</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varop'>++</span><span class='str'>" of element "</span> <span class='varop'>++</span>
<a name="line-207"></a> <span class='varid'>show</span> <span class='layout'>(</span><span class='varid'>getElemName</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varop'>++</span> <span class='str'>" must be one or more name tokens."</span><span class='layout'>)</span>
<a name="line-208"></a> <span class='keyword'>else</span> <span class='varid'>cat</span> <span class='layout'>(</span><span class='varid'>map</span> <span class='layout'>(</span><span class='varid'>checkValueNmtoken</span> <span class='varid'>attrDecl</span><span class='layout'>)</span> <span class='varid'>valueList</span><span class='layout'>)</span>
<a name="line-209"></a> <span class='keyword'>where</span>
<a name="line-210"></a> <span class='varid'>valueList</span> <span class='keyglyph'>=</span> <span class='varid'>words</span> <span class='varid'>attrValue</span>
<a name="line-211"></a>
<a name="line-212"></a><span class='definition'>checkValueNmtokens</span> <span class='varid'>n</span> <span class='keyword'>_</span>
<a name="line-213"></a> <span class='keyglyph'>=</span> <span class='varid'>error</span> <span class='layout'>(</span><span class='str'>"checkValueNmtokens: illegeal parameter:\n"</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>n</span><span class='layout'>)</span>
<a name="line-214"></a>
<a name="line-215"></a>
<a name="line-216"></a><span class='comment'>-- |</span>
<a name="line-217"></a><span class='comment'>-- Checks the value of ID attribute types. (3.3.1 \/ p.25 in Spec)</span>
<a name="line-218"></a><span class='comment'>--</span>
<a name="line-219"></a><span class='comment'>-- * 1.parameter attrDecl : the declaration of the attribute from the DTD</span>
<a name="line-220"></a><span class='comment'>--</span>
<a name="line-221"></a><span class='comment'>-- - 2.parameter attrValue : the normalized attribute value to be checked</span>
<a name="line-222"></a>
<a name="line-223"></a><a name="checkValueId"></a><span class='definition'>checkValueId</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>XmlFilter</span>
<a name="line-224"></a><span class='definition'>checkValueId</span> <span class='varid'>attrDecl</span> <span class='varid'>attrValue</span>
<a name="line-225"></a> <span class='keyglyph'>=</span> <span class='varid'>checkForName</span> <span class='str'>"Attribute value"</span> <span class='varid'>attrDecl</span> <span class='varid'>attrValue</span>
<a name="line-226"></a>
<a name="line-227"></a>
<a name="line-228"></a><span class='comment'>-- |</span>
<a name="line-229"></a><span class='comment'>-- Checks the value of IDREF attribute types. (3.3.1 \/ p.26 in Spec)</span>
<a name="line-230"></a><span class='comment'>--</span>
<a name="line-231"></a><span class='comment'>-- * 1.parameter attrDecl : the declaration of the attribute from the DTD</span>
<a name="line-232"></a><span class='comment'>--</span>
<a name="line-233"></a><span class='comment'>-- - 2.parameter attrValue : the normalized attribute value to be checked</span>
<a name="line-234"></a>
<a name="line-235"></a><a name="checkValueIdref"></a><span class='definition'>checkValueIdref</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>XmlFilter</span>
<a name="line-236"></a><span class='definition'>checkValueIdref</span> <span class='varid'>attrDecl</span> <span class='varid'>attrValue</span>
<a name="line-237"></a> <span class='keyglyph'>=</span> <span class='varid'>checkForName</span> <span class='str'>"Attribute value"</span> <span class='varid'>attrDecl</span> <span class='varid'>attrValue</span>
<a name="line-238"></a>
<a name="line-239"></a>
<a name="line-240"></a><span class='comment'>-- |</span>
<a name="line-241"></a><span class='comment'>-- Checks the value of IDREFS attribute types. (3.3.1 \/ p.26 in Spec)</span>
<a name="line-242"></a><span class='comment'>--</span>
<a name="line-243"></a><span class='comment'>-- * 1.parameter attrDecl : the declaration of the attribute from the DTD</span>
<a name="line-244"></a><span class='comment'>--</span>
<a name="line-245"></a><span class='comment'>-- - 2.parameter attrValue : the normalized attribute value to be checked</span>
<a name="line-246"></a>
<a name="line-247"></a><a name="checkValueIdrefs"></a><span class='definition'>checkValueIdrefs</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>XmlFilter</span>
<a name="line-248"></a><span class='definition'>checkValueIdrefs</span> <span class='varid'>attrDecl</span> <span class='varid'>attrValue</span>
<a name="line-249"></a> <span class='keyglyph'>=</span> <span class='varid'>cat</span> <span class='layout'>(</span><span class='varid'>map</span> <span class='layout'>(</span><span class='varid'>checkValueIdref</span> <span class='varid'>attrDecl</span><span class='layout'>)</span> <span class='layout'>(</span><span class='varid'>words</span> <span class='varid'>attrValue</span><span class='layout'>)</span><span class='layout'>)</span>
<a name="line-250"></a>
<a name="line-251"></a>
<a name="line-252"></a>
<a name="line-253"></a><span class='comment'>-- -----------------------------------------------------------------------------</span>
<a name="line-254"></a><span class='comment'>-- General helper functions for checking attribute values</span>
<a name="line-255"></a><span class='comment'>--</span>
<a name="line-256"></a>
<a name="line-257"></a><span class='comment'>-- |</span>
<a name="line-258"></a><span class='comment'>-- Checks if the value of an attribute is a name.</span>
<a name="line-259"></a><span class='comment'>--</span>
<a name="line-260"></a><span class='comment'>-- * 1.parameter msg : error message, should be "Entity" or "Attribute value"</span>
<a name="line-261"></a><span class='comment'>--</span>
<a name="line-262"></a><span class='comment'>-- - 2.parameter attrDecl : the declaration of the attribute from the DTD</span>
<a name="line-263"></a><span class='comment'>--</span>
<a name="line-264"></a><span class='comment'>-- - 3.parameter attrValue : the normalized attribute value to be checked</span>
<a name="line-265"></a>
<a name="line-266"></a><a name="checkForName"></a><span class='definition'>checkForName</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>XmlFilter</span>
<a name="line-267"></a><span class='definition'>checkForName</span> <span class='varid'>msg</span> <span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='conid'>ATTLIST</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span> <span class='varid'>attrValue</span>
<a name="line-268"></a> <span class='keyglyph'>=</span> <span class='varid'>checkName</span> <span class='varid'>parseRes</span>
<a name="line-269"></a> <span class='keyword'>where</span>
<a name="line-270"></a> <span class='varid'>parseRes</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</span>
<a name="line-271"></a> <span class='varid'>parseRes</span> <span class='keyglyph'>=</span> <span class='varid'>parseName</span> <span class='str'>""</span> <span class='layout'>(</span><span class='varid'>mkXTextTree</span> <span class='varid'>attrValue</span><span class='layout'>)</span>
<a name="line-272"></a>
<a name="line-273"></a> <span class='varid'>checkName</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>XmlFilter</span>
<a name="line-274"></a> <span class='varid'>checkName</span> <span class='layout'>(</span><span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XError</span> <span class='keyword'>_</span> <span class='varid'>s</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span><span class='conop'>:</span><span class='keyword'>_</span><span class='layout'>)</span>
<a name="line-275"></a> <span class='keyglyph'>=</span> <span class='varid'>err</span> <span class='layout'>(</span><span class='varid'>msg</span> <span class='varop'>++</span> <span class='str'>" "</span><span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>attrValue</span> <span class='varop'>++</span><span class='str'>" of attribute "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='layout'>(</span><span class='varid'>getAttrName</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varop'>++</span>
<a name="line-276"></a> <span class='str'>" for element "</span><span class='varop'>++</span> <span class='varid'>show</span> <span class='layout'>(</span><span class='varid'>getElemName</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varop'>++</span><span class='str'>" must be a name, "</span> <span class='varop'>++</span> <span class='layout'>(</span><span class='varid'>lines</span> <span class='varid'>s</span><span class='layout'>)</span> <span class='varop'>!!</span> <span class='num'>1</span> <span class='varop'>++</span> <span class='str'>"."</span><span class='layout'>)</span>
<a name="line-277"></a>
<a name="line-278"></a> <span class='varid'>checkName</span> <span class='keyword'>_</span> <span class='keyglyph'>=</span> <span class='varid'>none</span>
<a name="line-279"></a>
<a name="line-280"></a>
<a name="line-281"></a><span class='definition'>checkForName</span> <span class='keyword'>_</span> <span class='varid'>n</span> <span class='keyword'>_</span>
<a name="line-282"></a> <span class='keyglyph'>=</span> <span class='varid'>error</span> <span class='layout'>(</span><span class='str'>"checkForName: illegeal parameter:\n"</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>n</span><span class='layout'>)</span>
<a name="line-283"></a>
<a name="line-284"></a>
<a name="line-285"></a><span class='comment'>-- |</span>
<a name="line-286"></a><span class='comment'>-- Gets the element name from an attribute list of an XDTD ATTLIST node.</span>
<a name="line-287"></a><span class='comment'>--</span>
<a name="line-288"></a><span class='comment'>-- * 1.parameter tag : the attibute list of an XDTD ATTLIST</span>
<a name="line-289"></a><span class='comment'>--</span>
<a name="line-290"></a><span class='comment'>-- - returns : the element name</span>
<a name="line-291"></a>
<a name="line-292"></a><a name="getElemName"></a><span class='definition'>getElemName</span> <span class='keyglyph'>::</span> <span class='conid'>Attributes</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-293"></a><span class='definition'>getElemName</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_name</span>
<a name="line-294"></a>
<a name="line-295"></a>
<a name="line-296"></a><span class='comment'>-- |</span>
<a name="line-297"></a><span class='comment'>-- Gets the attribute name from an attribute list of an XDTD ATTLIST node.</span>
<a name="line-298"></a><span class='comment'>--</span>
<a name="line-299"></a><span class='comment'>-- * 1.parameter tag : the attibute list of an XDTD ATTLIST</span>
<a name="line-300"></a><span class='comment'>--</span>
<a name="line-301"></a><span class='comment'>-- - returns : the attribute name</span>
<a name="line-302"></a>
<a name="line-303"></a><a name="getAttrName"></a><span class='definition'>getAttrName</span> <span class='keyglyph'>::</span> <span class='conid'>Attributes</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-304"></a><span class='definition'>getAttrName</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_value</span>
<a name="line-305"></a>
<a name="line-306"></a>
<a name="line-307"></a>
<a name="line-308"></a><span class='comment'>-- -----------------------------------------------------------------------------</span>
<a name="line-309"></a>
<a name="line-310"></a>
<a name="line-311"></a><a name="normalizeAttributeValue"></a><span class='comment'>-- |</span>
<a name="line-312"></a><span class='comment'>-- Normalizes an attribute value with respect to its type. (3.3.3 \/ p.29 in Spec)</span>
<a name="line-313"></a><span class='comment'>--</span>
<a name="line-314"></a><span class='comment'>-- * 1.parameter attrDecl : the declaration of the attribute from the DTD. Expected</span>
<a name="line-315"></a><span class='comment'>-- is a list. If the list is empty, no declaration exists.</span>
<a name="line-316"></a><span class='comment'>--</span>
<a name="line-317"></a><span class='comment'>-- - 2.parameter value : the attribute value to be normalized</span>
<a name="line-318"></a><span class='comment'>--</span>
<a name="line-319"></a><span class='comment'>-- - returns : the normalized value</span>
<a name="line-320"></a><span class='comment'>--</span>
<a name="line-321"></a><span class='definition'>normalizeAttributeValue</span> <span class='keyglyph'>::</span> <span class='conid'>Maybe</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-322"></a><span class='definition'>normalizeAttributeValue</span> <span class='layout'>(</span><span class='conid'>Just</span> <span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='conid'>ATTLIST</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span><span class='layout'>)</span> <span class='varid'>value</span>
<a name="line-323"></a> <span class='keyglyph'>=</span> <span class='varid'>normalizeAttribute</span> <span class='varid'>attrType</span>
<a name="line-324"></a> <span class='keyword'>where</span>
<a name="line-325"></a> <span class='varid'>attrType</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_type</span> <span class='varid'>al</span>
<a name="line-326"></a>
<a name="line-327"></a> <span class='varid'>normalizeAttribute</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-328"></a> <span class='varid'>normalizeAttribute</span> <span class='varid'>typ</span>
<a name="line-329"></a> <span class='keyglyph'>|</span> <span class='varid'>typ</span> <span class='varop'>==</span> <span class='varid'>k_cdata</span> <span class='keyglyph'>=</span> <span class='varid'>cdataNormalization</span> <span class='varid'>value</span>
<a name="line-330"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span> <span class='keyglyph'>=</span> <span class='varid'>otherNormalization</span> <span class='varid'>value</span>
<a name="line-331"></a>
<a name="line-332"></a>
<a name="line-333"></a><span class='comment'>-- Attribute not declared in DTD, normalization as CDATA</span>
<a name="line-334"></a><span class='definition'>normalizeAttributeValue</span> <span class='keyword'>_</span> <span class='varid'>value</span>
<a name="line-335"></a> <span class='keyglyph'>=</span> <span class='varid'>cdataNormalization</span> <span class='varid'>value</span>
<a name="line-336"></a>
<a name="line-337"></a>
<a name="line-338"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-339"></a><span class='comment'>-- Helper functions for normalization</span>
<a name="line-340"></a>
<a name="line-341"></a>
<a name="line-342"></a><a name="cdataNormalization"></a><span class='comment'>-- |</span>
<a name="line-343"></a><span class='comment'>-- Normalization of CDATA attribute values.</span>
<a name="line-344"></a><span class='comment'>-- is already done when parsing</span>
<a name="line-345"></a><span class='comment'>-- during entity substituion for attribute values</span>
<a name="line-346"></a><span class='definition'>cdataNormalization</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-347"></a><span class='definition'>cdataNormalization</span> <span class='keyglyph'>=</span> <span class='varid'>id</span>
<a name="line-348"></a>
<a name="line-349"></a>
<a name="line-350"></a><a name="otherNormalization"></a><span class='comment'>-- | Normalization of attribute values other than CDATA.</span>
<a name="line-351"></a><span class='definition'>otherNormalization</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-352"></a><span class='definition'>otherNormalization</span> <span class='keyglyph'>=</span> <span class='varid'>reduceWSSequences</span> <span class='varop'>.</span> <span class='varid'>stringTrim</span> <span class='varop'>.</span> <span class='varid'>cdataNormalization</span>
<a name="line-353"></a>
<a name="line-354"></a><a name="reduceWSSequences"></a><span class='comment'>-- | Reduce whitespace sequences to a single whitespace.</span>
<a name="line-355"></a><span class='definition'>reduceWSSequences</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-356"></a><span class='definition'>reduceWSSequences</span> <span class='varid'>str</span> <span class='keyglyph'>=</span> <span class='varid'>unwords</span> <span class='layout'>(</span><span class='varid'>words</span> <span class='varid'>str</span><span class='layout'>)</span>
<a name="line-357"></a>
<a name="line-358"></a>
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