hxt-8.2.0: doc/hdoc/src/Text-XML-HXT-DOM-QualifiedName.html
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<pre><a name="line-1"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='comment'>{- |
<a name="line-4"></a> Module : Text.XML.HXT.DOM.QualifiedName
<a name="line-5"></a> Copyright : Copyright (C) 2008 Uwe Schmidt
<a name="line-6"></a> License : MIT
<a name="line-7"></a>
<a name="line-8"></a> Maintainer : Uwe Schmidt (uwe@fh-wedel.de)
<a name="line-9"></a> Stability : stable
<a name="line-10"></a> Portability: portable
<a name="line-11"></a>
<a name="line-12"></a> The core data types of the HXT DOM.
<a name="line-13"></a>
<a name="line-14"></a>-}</span>
<a name="line-15"></a>
<a name="line-16"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-17"></a>
<a name="line-18"></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'>DOM</span><span class='varop'>.</span><span class='conid'>QualifiedName</span>
<a name="line-19"></a> <span class='layout'>(</span> <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'>DOM</span><span class='varop'>.</span><span class='conid'>QualifiedName</span>
<a name="line-20"></a> <span class='layout'>)</span>
<a name="line-21"></a>
<a name="line-22"></a><span class='keyword'>where</span>
<a name="line-23"></a><span class='keyword'>import</span> <span class='conid'>Control</span><span class='varop'>.</span><span class='conid'>Parallel</span><span class='varop'>.</span><span class='conid'>Strategies</span>
<a name="line-24"></a>
<a name="line-25"></a><span class='keyword'>import</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>Char</span> <span class='layout'>(</span><span class='varid'>toLower</span><span class='layout'>)</span>
<a name="line-26"></a><span class='keyword'>import</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>Typeable</span>
<a name="line-27"></a>
<a name="line-28"></a><span class='comment'>-- -----------------------------------------------------------------------------</span>
<a name="line-29"></a><span class='comment'>--</span>
<a name="line-30"></a><span class='comment'>-- |</span>
<a name="line-31"></a><span class='comment'>-- Namespace support for element and attribute names.</span>
<a name="line-32"></a><span class='comment'>--</span>
<a name="line-33"></a><span class='comment'>-- A qualified name consists of a name prefix, a local name</span>
<a name="line-34"></a><span class='comment'>-- and a namespace uri.</span>
<a name="line-35"></a><span class='comment'>-- All modules, which are not namespace aware, use only the 'localPart' component.</span>
<a name="line-36"></a><span class='comment'>-- When dealing with namespaces, the document tree must be processed by "propagateNamespaces"</span>
<a name="line-37"></a><span class='comment'>-- to split names of structure \"prefix:localPart\" and label the name with the apropriate namespace uri</span>
<a name="line-38"></a>
<a name="line-39"></a><a name="QName"></a><span class='keyword'>data</span> <span class='conid'>QName</span> <span class='keyglyph'>=</span> <span class='conid'>QN</span> <span class='layout'>{</span> <span class='varid'>namePrefix</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='comment'>-- ^ the name prefix part of a qualified name \"namePrefix:localPart\"</span>
<a name="line-40"></a> <span class='layout'>,</span> <span class='varid'>localPart</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='comment'>-- ^ the local part of a qualified name \"namePrefix:localPart\"</span>
<a name="line-41"></a> <span class='layout'>,</span> <span class='varid'>namespaceUri</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='comment'>-- ^ the associated namespace uri</span>
<a name="line-42"></a> <span class='layout'>}</span>
<a name="line-43"></a> <span class='keyword'>deriving</span> <span class='layout'>(</span><span class='conid'>Ord</span><span class='layout'>,</span> <span class='conid'>Show</span><span class='layout'>,</span> <span class='conid'>Read</span><span class='layout'>,</span> <span class='conid'>Typeable</span><span class='layout'>)</span>
<a name="line-44"></a>
<a name="line-45"></a><span class='comment'>-- | Two QNames are equal if (1. case) namespaces are both empty and the qualified names</span>
<a name="line-46"></a><span class='comment'>-- (prefix:localpart) are the same or (2. case) namespaces are set and namespaces and</span>
<a name="line-47"></a><span class='comment'>-- local parts both are equal</span>
<a name="line-48"></a>
<a name="line-49"></a><span class='keyword'>instance</span> <span class='conid'>Eq</span> <span class='conid'>QName</span> <span class='keyword'>where</span>
<a name="line-50"></a> <span class='varid'>q1</span> <span class='varop'>==</span> <span class='varid'>q2</span>
<a name="line-51"></a> <span class='keyglyph'>|</span> <span class='varid'>null</span> <span class='varid'>ns1</span> <span class='varop'>&&</span> <span class='varid'>null</span> <span class='varid'>ns2</span>
<a name="line-52"></a> <span class='keyglyph'>=</span> <span class='varid'>qualifiedName</span> <span class='varid'>q1</span> <span class='varop'>==</span> <span class='varid'>qualifiedName</span> <span class='varid'>q2</span>
<a name="line-53"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span>
<a name="line-54"></a> <span class='keyglyph'>=</span> <span class='varid'>localPart</span> <span class='varid'>q1</span> <span class='varop'>==</span> <span class='varid'>localPart</span> <span class='varid'>q2</span>
<a name="line-55"></a> <span class='varop'>&&</span>
<a name="line-56"></a> <span class='varid'>ns1</span> <span class='varop'>==</span> <span class='varid'>ns2</span>
<a name="line-57"></a> <span class='keyword'>where</span>
<a name="line-58"></a> <span class='varid'>ns1</span> <span class='keyglyph'>=</span> <span class='varid'>namespaceUri</span> <span class='varid'>q1</span>
<a name="line-59"></a> <span class='varid'>ns2</span> <span class='keyglyph'>=</span> <span class='varid'>namespaceUri</span> <span class='varid'>q2</span>
<a name="line-60"></a>
<a name="line-61"></a><span class='keyword'>instance</span> <span class='conid'>NFData</span> <span class='conid'>QName</span> <span class='keyword'>where</span>
<a name="line-62"></a> <span class='varid'>rnf</span> <span class='layout'>(</span><span class='conid'>QN</span> <span class='varid'>np</span> <span class='varid'>lp</span> <span class='varid'>ns</span><span class='layout'>)</span> <span class='keyglyph'>=</span> <span class='varid'>rnf</span> <span class='varid'>np</span> <span class='varop'>`seq`</span> <span class='varid'>rnf</span> <span class='varid'>lp</span> <span class='varop'>`seq`</span> <span class='varid'>rnf</span> <span class='varid'>ns</span>
<a name="line-63"></a>
<a name="line-64"></a>
<a name="line-65"></a><span class='comment'>-- just for adding the module to the lib</span>
<a name="line-66"></a><span class='comment'>-- |</span>
<a name="line-67"></a><span class='comment'>-- builds the full name \"prefix:localPart\", if prefix is not null, else the local part is the result</span>
<a name="line-68"></a>
<a name="line-69"></a><a name="qualifiedName"></a><span class='definition'>qualifiedName</span> <span class='keyglyph'>::</span> <span class='conid'>QName</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-70"></a><span class='definition'>qualifiedName</span> <span class='varid'>n</span>
<a name="line-71"></a> <span class='keyglyph'>|</span> <span class='varid'>null</span> <span class='varid'>px</span>
<a name="line-72"></a> <span class='keyglyph'>=</span> <span class='varid'>lp</span>
<a name="line-73"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span>
<a name="line-74"></a> <span class='keyglyph'>=</span> <span class='varid'>px</span> <span class='varop'>++</span> <span class='layout'>(</span><span class='chr'>':'</span> <span class='conop'>:</span> <span class='varid'>lp</span><span class='layout'>)</span>
<a name="line-75"></a> <span class='keyword'>where</span>
<a name="line-76"></a> <span class='varid'>px</span> <span class='keyglyph'>=</span> <span class='varid'>namePrefix</span> <span class='varid'>n</span>
<a name="line-77"></a> <span class='varid'>lp</span> <span class='keyglyph'>=</span> <span class='varid'>localPart</span> <span class='varid'>n</span>
<a name="line-78"></a>
<a name="line-79"></a><span class='comment'>-- |</span>
<a name="line-80"></a><span class='comment'>-- builds the \"universal\" name, that is the namespace uri surrounded with \"{\" and \"}\" followed by the local part</span>
<a name="line-81"></a><span class='comment'>-- (specialisation of 'buildUniversalName')</span>
<a name="line-82"></a>
<a name="line-83"></a><a name="universalName"></a><span class='definition'>universalName</span> <span class='keyglyph'>::</span> <span class='conid'>QName</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-84"></a><span class='definition'>universalName</span> <span class='keyglyph'>=</span> <span class='varid'>buildUniversalName</span> <span class='layout'>(</span><span class='keyglyph'>\</span> <span class='varid'>ns</span> <span class='varid'>lp</span> <span class='keyglyph'>-></span> <span class='chr'>'{'</span> <span class='conop'>:</span> <span class='varid'>ns</span> <span class='varop'>++</span> <span class='chr'>'}'</span> <span class='conop'>:</span> <span class='varid'>lp</span><span class='layout'>)</span>
<a name="line-85"></a>
<a name="line-86"></a><span class='comment'>-- |</span>
<a name="line-87"></a><span class='comment'>-- builds an \"universal\" uri, that is the namespace uri followed by the local part. This is usefull for RDF applications,</span>
<a name="line-88"></a><span class='comment'>-- where the subject, predicate and object often are concatenated from namespace uri and local part</span>
<a name="line-89"></a><span class='comment'>-- (specialisation of 'buildUniversalName')</span>
<a name="line-90"></a>
<a name="line-91"></a><a name="universalUri"></a><span class='definition'>universalUri</span> <span class='keyglyph'>::</span> <span class='conid'>QName</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-92"></a><span class='definition'>universalUri</span> <span class='keyglyph'>=</span> <span class='varid'>buildUniversalName</span> <span class='layout'>(</span><span class='varop'>++</span><span class='layout'>)</span>
<a name="line-93"></a>
<a name="line-94"></a><span class='comment'>-- |</span>
<a name="line-95"></a><span class='comment'>-- builds a string from the namespace uri and the local part. If the namespace uri is empty, the local part is returned, else</span>
<a name="line-96"></a><span class='comment'>-- namespace uri and local part are combined with the combining function given by the first parameter</span>
<a name="line-97"></a>
<a name="line-98"></a><a name="buildUniversalName"></a><span class='definition'>buildUniversalName</span> <span class='keyglyph'>::</span> <span class='layout'>(</span><span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span><span class='layout'>)</span> <span class='keyglyph'>-></span> <span class='conid'>QName</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-99"></a><span class='definition'>buildUniversalName</span> <span class='varid'>bf</span> <span class='varid'>n</span>
<a name="line-100"></a> <span class='keyglyph'>|</span> <span class='varid'>null</span> <span class='varid'>ns</span>
<a name="line-101"></a> <span class='keyglyph'>=</span> <span class='varid'>lp</span>
<a name="line-102"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span>
<a name="line-103"></a> <span class='keyglyph'>=</span> <span class='varid'>bf</span> <span class='varid'>ns</span> <span class='varid'>lp</span>
<a name="line-104"></a> <span class='keyword'>where</span>
<a name="line-105"></a> <span class='varid'>ns</span> <span class='keyglyph'>=</span> <span class='varid'>namespaceUri</span> <span class='varid'>n</span>
<a name="line-106"></a> <span class='varid'>lp</span> <span class='keyglyph'>=</span> <span class='varid'>localPart</span> <span class='varid'>n</span>
<a name="line-107"></a>
<a name="line-108"></a><span class='comment'>-- |</span>
<a name="line-109"></a><span class='comment'>-- constructs a complete qualified name with 'namePrefix', 'localPart' and 'namespaceUri'.</span>
<a name="line-110"></a>
<a name="line-111"></a><a name="mkQName"></a><span class='definition'>mkQName</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>QName</span>
<a name="line-112"></a><span class='definition'>mkQName</span> <span class='varid'>p</span> <span class='varid'>l</span> <span class='varid'>n</span>
<a name="line-113"></a> <span class='keyglyph'>=</span> <span class='conid'>QN</span> <span class='layout'>{</span> <span class='varid'>namePrefix</span> <span class='keyglyph'>=</span> <span class='varid'>p</span>
<a name="line-114"></a> <span class='layout'>,</span> <span class='varid'>localPart</span> <span class='keyglyph'>=</span> <span class='varid'>l</span>
<a name="line-115"></a> <span class='layout'>,</span> <span class='varid'>namespaceUri</span> <span class='keyglyph'>=</span> <span class='varid'>n</span>
<a name="line-116"></a> <span class='layout'>}</span>
<a name="line-117"></a>
<a name="line-118"></a><span class='comment'>-- |</span>
<a name="line-119"></a><span class='comment'>-- constructs a simple, namespace unaware name, 'namePrefix' and 'namespaceUri' are set to the empty string.</span>
<a name="line-120"></a>
<a name="line-121"></a><a name="mkName"></a><span class='definition'>mkName</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>QName</span>
<a name="line-122"></a><span class='definition'>mkName</span> <span class='varid'>s</span>
<a name="line-123"></a> <span class='keyglyph'>=</span> <span class='conid'>QN</span> <span class='layout'>{</span> <span class='varid'>namePrefix</span> <span class='keyglyph'>=</span> <span class='str'>""</span>
<a name="line-124"></a> <span class='layout'>,</span> <span class='varid'>localPart</span> <span class='keyglyph'>=</span> <span class='varid'>s</span>
<a name="line-125"></a> <span class='layout'>,</span> <span class='varid'>namespaceUri</span> <span class='keyglyph'>=</span> <span class='str'>""</span>
<a name="line-126"></a> <span class='layout'>}</span>
<a name="line-127"></a>
<a name="line-128"></a><span class='comment'>-- |</span>
<a name="line-129"></a><span class='comment'>-- constructs a simple name, with prefix and localPart but without a namespace uri.</span>
<a name="line-130"></a><span class='comment'>--</span>
<a name="line-131"></a><span class='comment'>-- see also 'mkName', 'mkNsName', 'mkSNsName'</span>
<a name="line-132"></a>
<a name="line-133"></a><a name="mkPrefixLocalPart"></a><span class='definition'>mkPrefixLocalPart</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>QName</span>
<a name="line-134"></a><span class='definition'>mkPrefixLocalPart</span> <span class='varid'>p</span> <span class='varid'>l</span>
<a name="line-135"></a> <span class='keyglyph'>=</span> <span class='conid'>QN</span> <span class='layout'>{</span> <span class='varid'>namePrefix</span> <span class='keyglyph'>=</span> <span class='varid'>p</span>
<a name="line-136"></a> <span class='layout'>,</span> <span class='varid'>localPart</span> <span class='keyglyph'>=</span> <span class='varid'>l</span>
<a name="line-137"></a> <span class='layout'>,</span> <span class='varid'>namespaceUri</span> <span class='keyglyph'>=</span> <span class='str'>""</span>
<a name="line-138"></a> <span class='layout'>}</span>
<a name="line-139"></a>
<a name="line-140"></a><span class='comment'>-- |</span>
<a name="line-141"></a><span class='comment'>-- constructs a simple, namespace aware name, with prefix:localPart as first parameter, namspace uri as second.</span>
<a name="line-142"></a><span class='comment'>--</span>
<a name="line-143"></a><span class='comment'>-- see also 'mkName', 'mkPrefixLocalPart'</span>
<a name="line-144"></a>
<a name="line-145"></a><a name="mkNsName"></a><span class='definition'>mkNsName</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>QName</span>
<a name="line-146"></a><span class='definition'>mkNsName</span> <span class='varid'>n</span> <span class='varid'>ns</span>
<a name="line-147"></a> <span class='keyglyph'>=</span> <span class='conid'>QN</span> <span class='layout'>{</span> <span class='varid'>namePrefix</span> <span class='keyglyph'>=</span> <span class='varid'>p</span>
<a name="line-148"></a> <span class='layout'>,</span> <span class='varid'>localPart</span> <span class='keyglyph'>=</span> <span class='varid'>l</span>
<a name="line-149"></a> <span class='layout'>,</span> <span class='varid'>namespaceUri</span> <span class='keyglyph'>=</span> <span class='varid'>ns</span>
<a name="line-150"></a> <span class='layout'>}</span>
<a name="line-151"></a> <span class='keyword'>where</span>
<a name="line-152"></a> <span class='layout'>(</span><span class='varid'>x1</span><span class='layout'>,</span> <span class='varid'>x2</span><span class='layout'>)</span> <span class='keyglyph'>=</span> <span class='varid'>span</span> <span class='layout'>(</span><span class='varop'>/=</span> <span class='chr'>':'</span><span class='layout'>)</span> <span class='varid'>n</span>
<a name="line-153"></a> <span class='layout'>(</span><span class='varid'>p</span><span class='layout'>,</span> <span class='varid'>l</span><span class='layout'>)</span>
<a name="line-154"></a> <span class='keyglyph'>|</span> <span class='varid'>null</span> <span class='varid'>x2</span> <span class='keyglyph'>=</span> <span class='layout'>(</span><span class='str'>""</span><span class='layout'>,</span> <span class='varid'>x1</span><span class='layout'>)</span>
<a name="line-155"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span> <span class='keyglyph'>=</span> <span class='layout'>(</span><span class='varid'>x1</span><span class='layout'>,</span> <span class='varid'>tail</span> <span class='varid'>x2</span><span class='layout'>)</span>
<a name="line-156"></a>
<a name="line-157"></a>
<a name="line-158"></a><span class='comment'>-- |</span>
<a name="line-159"></a><span class='comment'>-- constructs a simple name, with prefix:localPart as 1 parameter, with empty namspace uri, same as 'mkPrefixLocalPart, but with a single parameter</span>
<a name="line-160"></a><span class='comment'>--</span>
<a name="line-161"></a><span class='comment'>-- see also 'mkNsName', 'mkPrefixLocalPart'</span>
<a name="line-162"></a>
<a name="line-163"></a><a name="mkSNsName"></a><span class='definition'>mkSNsName</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>QName</span>
<a name="line-164"></a><span class='definition'>mkSNsName</span> <span class='varid'>n</span> <span class='keyglyph'>=</span> <span class='varid'>mkNsName</span> <span class='varid'>n</span> <span class='str'>""</span>
<a name="line-165"></a>
<a name="line-166"></a><span class='comment'>-- | Empty QName</span>
<a name="line-167"></a>
<a name="line-168"></a><a name="nullQName"></a><span class='definition'>nullQName</span> <span class='keyglyph'>::</span> <span class='conid'>QName</span>
<a name="line-169"></a><span class='definition'>nullQName</span> <span class='keyglyph'>=</span> <span class='conid'>QN</span> <span class='str'>""</span> <span class='str'>""</span> <span class='str'>""</span>
<a name="line-170"></a>
<a name="line-171"></a><span class='comment'>-- | Equality of QNames: Two QNames are equal, if the local parts are equal</span>
<a name="line-172"></a><span class='comment'>-- and the namespace URIs are equal.</span>
<a name="line-173"></a><span class='comment'>-- The comparison works with and without namespace propagation.</span>
<a name="line-174"></a><span class='comment'>-- If namespaces have been propagated, the name is split into prefix and local part</span>
<a name="line-175"></a><span class='comment'>-- and the namespace uri is set. In this case the prefix is not significant for equality test.</span>
<a name="line-176"></a><span class='comment'>-- If namespaces have not been propagated, the local part contains the full name, prefix</span>
<a name="line-177"></a><span class='comment'>-- and namespace URI are empty. The full name (prefix and local part) is used for comparison.</span>
<a name="line-178"></a>
<a name="line-179"></a><a name="equalQName"></a><span class='definition'>equalQName</span> <span class='keyglyph'>::</span> <span class='conid'>QName</span> <span class='keyglyph'>-></span> <span class='conid'>QName</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span>
<a name="line-180"></a><span class='definition'>equalQName</span> <span class='keyglyph'>=</span> <span class='varid'>equalQNameBy</span> <span class='layout'>(</span><span class='varop'>==</span><span class='layout'>)</span>
<a name="line-181"></a>
<a name="line-182"></a><span class='comment'>-- | Equivalent QNames are defined as follows: The URIs are normalized before comparison.</span>
<a name="line-183"></a><span class='comment'>-- Comparison is done with 'equalQNameBy' and 'equivUri'</span>
<a name="line-184"></a>
<a name="line-185"></a><a name="equivQName"></a><span class='definition'>equivQName</span> <span class='keyglyph'>::</span> <span class='conid'>QName</span> <span class='keyglyph'>-></span> <span class='conid'>QName</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span>
<a name="line-186"></a><span class='definition'>equivQName</span> <span class='keyglyph'>=</span> <span class='varid'>equalQNameBy</span> <span class='varid'>equivUri</span>
<a name="line-187"></a>
<a name="line-188"></a><span class='comment'>-- | Comparison of normalized namespace URIs using 'normalizeNsUri'</span>
<a name="line-189"></a>
<a name="line-190"></a><a name="equivUri"></a><span class='definition'>equivUri</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span>
<a name="line-191"></a><span class='definition'>equivUri</span> <span class='varid'>x</span> <span class='varid'>y</span> <span class='keyglyph'>=</span> <span class='varid'>normalizeNsUri</span> <span class='varid'>x</span> <span class='varop'>==</span> <span class='varid'>normalizeNsUri</span> <span class='varid'>y</span>
<a name="line-192"></a>
<a name="line-193"></a><span class='comment'>-- | Sometimes a weaker equality relation than 'equalQName' is appropriate, e.g no case significance in names, ...</span>
<a name="line-194"></a><span class='comment'>-- a name normalization function can be applied to the strings before comparing. Called by 'equalQName' and</span>
<a name="line-195"></a><span class='comment'>-- 'equivQName'</span>
<a name="line-196"></a>
<a name="line-197"></a><a name="equalQNameBy"></a><span class='definition'>equalQNameBy</span> <span class='keyglyph'>::</span> <span class='layout'>(</span><span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span><span class='layout'>)</span> <span class='keyglyph'>-></span> <span class='conid'>QName</span> <span class='keyglyph'>-></span> <span class='conid'>QName</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span>
<a name="line-198"></a><span class='definition'>equalQNameBy</span> <span class='varid'>equiv</span> <span class='varid'>q1</span> <span class='varid'>q2</span>
<a name="line-199"></a> <span class='keyglyph'>=</span> <span class='varid'>localPart</span> <span class='varid'>q1</span> <span class='varop'>==</span> <span class='varid'>localPart</span> <span class='varid'>q2</span>
<a name="line-200"></a> <span class='varop'>&&</span>
<a name="line-201"></a> <span class='layout'>(</span><span class='varid'>namespaceUri</span> <span class='varid'>q1</span> <span class='varop'>`equiv`</span> <span class='varid'>namespaceUri</span> <span class='varid'>q2</span><span class='layout'>)</span>
<a name="line-202"></a>
<a name="line-203"></a><span class='comment'>-- | Normalization of URIs: Normalization is done by conversion into lowercase letters. A trailing \"\/\" is ignored</span>
<a name="line-204"></a>
<a name="line-205"></a><a name="normalizeNsUri"></a><span class='definition'>normalizeNsUri</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-206"></a><span class='definition'>normalizeNsUri</span>
<a name="line-207"></a> <span class='keyglyph'>=</span> <span class='varid'>map</span> <span class='varid'>toLower</span> <span class='varop'>.</span> <span class='varid'>stripSlash</span>
<a name="line-208"></a> <span class='keyword'>where</span>
<a name="line-209"></a> <span class='varid'>stripSlash</span> <span class='str'>""</span> <span class='keyglyph'>=</span> <span class='str'>""</span>
<a name="line-210"></a> <span class='varid'>stripSlash</span> <span class='varid'>s</span>
<a name="line-211"></a> <span class='keyglyph'>|</span> <span class='varid'>last</span> <span class='varid'>s</span> <span class='varop'>==</span> <span class='chr'>'/'</span> <span class='keyglyph'>=</span> <span class='varid'>init</span> <span class='varid'>s</span>
<a name="line-212"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span> <span class='keyglyph'>=</span> <span class='varid'>s</span>
<a name="line-213"></a>
<a name="line-214"></a><span class='comment'>-- -----------------------------------------------------------------------------</span>
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