hxt-8.3.0: doc/hdoc/src/Text-XML-HXT-Arrow-GeneralEntitySubstitution.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.Arrow.GeneralEntitySubstitution
<a name="line-5"></a> Copyright : Copyright (C) 2005 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 : experimental
<a name="line-10"></a> Portability: portable
<a name="line-11"></a> Version : $Id: GeneralEntitySubstitution.hs,v 1.13 2006/05/01 18:56:24 hxml Exp $
<a name="line-12"></a>
<a name="line-13"></a> general entity substitution
<a name="line-14"></a>
<a name="line-15"></a>-}</span>
<a name="line-16"></a>
<a name="line-17"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-18"></a>
<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'>Arrow</span><span class='varop'>.</span><span class='conid'>GeneralEntitySubstitution</span>
<a name="line-20"></a> <span class='layout'>(</span> <span class='varid'>processGeneralEntities</span> <span class='layout'>)</span>
<a name="line-21"></a><span class='keyword'>where</span>
<a name="line-22"></a>
<a name="line-23"></a><span class='keyword'>import</span> <span class='conid'>Control</span><span class='varop'>.</span><span class='conid'>Arrow</span> <span class='comment'>-- arrow classes</span>
<a name="line-24"></a><span class='keyword'>import</span> <span class='conid'>Control</span><span class='varop'>.</span><span class='conid'>Arrow</span><span class='varop'>.</span><span class='conid'>ArrowList</span>
<a name="line-25"></a><span class='keyword'>import</span> <span class='conid'>Control</span><span class='varop'>.</span><span class='conid'>Arrow</span><span class='varop'>.</span><span class='conid'>ArrowIf</span>
<a name="line-26"></a><span class='keyword'>import</span> <span class='conid'>Control</span><span class='varop'>.</span><span class='conid'>Arrow</span><span class='varop'>.</span><span class='conid'>ArrowTree</span>
<a name="line-27"></a>
<a name="line-28"></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'>Interface</span>
<a name="line-29"></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'>Arrow</span><span class='varop'>.</span><span class='conid'>XmlArrow</span>
<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'>Arrow</span><span class='varop'>.</span><span class='conid'>XmlIOStateArrow</span>
<a name="line-31"></a>
<a name="line-32"></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'>Arrow</span><span class='varop'>.</span><span class='conid'>ParserInterface</span>
<a name="line-33"></a> <span class='layout'>(</span> <span class='varid'>parseXmlAttrValue</span>
<a name="line-34"></a> <span class='layout'>,</span> <span class='varid'>parseXmlGeneralEntityValue</span>
<a name="line-35"></a> <span class='layout'>)</span>
<a name="line-36"></a>
<a name="line-37"></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'>Arrow</span><span class='varop'>.</span><span class='conid'>Edit</span>
<a name="line-38"></a> <span class='layout'>(</span> <span class='varid'>transfCharRef</span>
<a name="line-39"></a> <span class='layout'>)</span>
<a name="line-40"></a>
<a name="line-41"></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'>Arrow</span><span class='varop'>.</span><span class='conid'>DocumentInput</span>
<a name="line-42"></a> <span class='layout'>(</span> <span class='varid'>getXmlEntityContents</span>
<a name="line-43"></a> <span class='layout'>)</span>
<a name="line-44"></a>
<a name="line-45"></a><span class='keyword'>import</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>Maybe</span>
<a name="line-46"></a>
<a name="line-47"></a><span class='keyword'>import</span> <span class='keyword'>qualified</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>Map</span> <span class='keyword'>as</span> <span class='conid'>M</span>
<a name="line-48"></a> <span class='layout'>(</span> <span class='conid'>Map</span>
<a name="line-49"></a> <span class='layout'>,</span> <span class='varid'>empty</span>
<a name="line-50"></a> <span class='layout'>,</span> <span class='varid'>lookup</span>
<a name="line-51"></a> <span class='layout'>,</span> <span class='varid'>insert</span><span class='layout'>)</span>
<a name="line-52"></a>
<a name="line-53"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-54"></a>
<a name="line-55"></a><a name="GEContext"></a><span class='keyword'>data</span> <span class='conid'>GEContext</span>
<a name="line-56"></a> <span class='keyglyph'>=</span> <span class='conid'>ReferenceInContent</span>
<a name="line-57"></a> <span class='keyglyph'>|</span> <span class='conid'>ReferenceInAttributeValue</span>
<a name="line-58"></a> <span class='keyglyph'>|</span> <span class='conid'>ReferenceInEntityValue</span>
<a name="line-59"></a> <span class='comment'>-- or OccursInAttributeValue -- not used during substitution but during validation</span>
<a name="line-60"></a> <span class='comment'>-- or ReferenceInDTD -- not used: syntax check detects errors</span>
<a name="line-61"></a>
<a name="line-62"></a><a name="GESubstArrow"></a><span class='keyword'>type</span> <span class='conid'>GESubstArrow</span> <span class='keyglyph'>=</span> <span class='conid'>GEContext</span> <span class='keyglyph'>-></span> <span class='conid'>RecList</span> <span class='keyglyph'>-></span> <span class='conid'>GEArrow</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-63"></a>
<a name="line-64"></a><a name="GEArrow"></a><span class='keyword'>type</span> <span class='conid'>GEArrow</span> <span class='varid'>b</span> <span class='varid'>c</span> <span class='keyglyph'>=</span> <span class='conid'>IOStateArrow</span> <span class='conid'>GEEnv</span> <span class='varid'>b</span> <span class='varid'>c</span>
<a name="line-65"></a>
<a name="line-66"></a><a name="RecList"></a><span class='keyword'>type</span> <span class='conid'>RecList</span> <span class='keyglyph'>=</span> <span class='keyglyph'>[</span><span class='conid'>String</span><span class='keyglyph'>]</span>
<a name="line-67"></a>
<a name="line-68"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-69"></a>
<a name="line-70"></a><a name="GEEnv"></a><span class='keyword'>newtype</span> <span class='conid'>GEEnv</span> <span class='keyglyph'>=</span> <span class='conid'>GEEnv</span> <span class='layout'>(</span><span class='conid'>M</span><span class='varop'>.</span><span class='conid'>Map</span> <span class='conid'>String</span> <span class='conid'>GESubstArrow</span><span class='layout'>)</span>
<a name="line-71"></a>
<a name="line-72"></a><a name="emptyGeEnv"></a><span class='definition'>emptyGeEnv</span> <span class='keyglyph'>::</span> <span class='conid'>GEEnv</span>
<a name="line-73"></a><span class='definition'>emptyGeEnv</span> <span class='keyglyph'>=</span> <span class='conid'>GEEnv</span> <span class='conid'>M</span><span class='varop'>.</span><span class='varid'>empty</span>
<a name="line-74"></a>
<a name="line-75"></a><a name="lookupGeEnv"></a><span class='definition'>lookupGeEnv</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>GEEnv</span> <span class='keyglyph'>-></span> <span class='conid'>Maybe</span> <span class='conid'>GESubstArrow</span>
<a name="line-76"></a><span class='definition'>lookupGeEnv</span> <span class='varid'>k</span> <span class='layout'>(</span><span class='conid'>GEEnv</span> <span class='varid'>env</span><span class='layout'>)</span>
<a name="line-77"></a> <span class='keyglyph'>=</span> <span class='conid'>M</span><span class='varop'>.</span><span class='varid'>lookup</span> <span class='varid'>k</span> <span class='varid'>env</span>
<a name="line-78"></a>
<a name="line-79"></a><a name="addGeEntry"></a><span class='definition'>addGeEntry</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>GESubstArrow</span> <span class='keyglyph'>-></span> <span class='conid'>GEEnv</span> <span class='keyglyph'>-></span> <span class='conid'>GEEnv</span>
<a name="line-80"></a><span class='definition'>addGeEntry</span> <span class='varid'>k</span> <span class='varid'>a</span> <span class='layout'>(</span><span class='conid'>GEEnv</span> <span class='varid'>env</span><span class='layout'>)</span>
<a name="line-81"></a> <span class='keyglyph'>=</span> <span class='conid'>GEEnv</span> <span class='varop'>$</span> <span class='conid'>M</span><span class='varop'>.</span><span class='varid'>insert</span> <span class='varid'>k</span> <span class='varid'>a</span> <span class='varid'>env</span>
<a name="line-82"></a>
<a name="line-83"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-84"></a>
<a name="line-85"></a><span class='comment'>-- |</span>
<a name="line-86"></a><span class='comment'>-- substitution of general entities</span>
<a name="line-87"></a><span class='comment'>--</span>
<a name="line-88"></a><span class='comment'>-- input: a complete document tree including root node</span>
<a name="line-89"></a>
<a name="line-90"></a><a name="processGeneralEntities"></a><span class='definition'>processGeneralEntities</span> <span class='keyglyph'>::</span> <span class='conid'>IOStateArrow</span> <span class='varid'>s</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-91"></a><span class='definition'>processGeneralEntities</span>
<a name="line-92"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='varid'>traceMsg</span> <span class='num'>1</span> <span class='str'>"processGeneralEntities: collect and substitute general entities"</span>
<a name="line-93"></a> <span class='varop'>>>></span>
<a name="line-94"></a> <span class='varid'>withOtherUserState</span> <span class='varid'>emptyGeEnv</span> <span class='layout'>(</span><span class='varid'>processChildren</span> <span class='layout'>(</span><span class='varid'>processGeneralEntity</span> <span class='conid'>ReferenceInContent</span> <span class='conid'>[]</span><span class='layout'>)</span><span class='layout'>)</span>
<a name="line-95"></a> <span class='varop'>>>></span>
<a name="line-96"></a> <span class='varid'>setDocumentStatusFromSystemState</span> <span class='str'>"in general entity processing"</span>
<a name="line-97"></a> <span class='varop'>>>></span>
<a name="line-98"></a> <span class='varid'>traceTree</span>
<a name="line-99"></a> <span class='varop'>>>></span>
<a name="line-100"></a> <span class='varid'>traceSource</span>
<a name="line-101"></a> <span class='layout'>)</span>
<a name="line-102"></a> <span class='varop'>`when`</span>
<a name="line-103"></a> <span class='varid'>documentStatusOk</span>
<a name="line-104"></a>
<a name="line-105"></a>
<a name="line-106"></a><a name="processGeneralEntity"></a><span class='definition'>processGeneralEntity</span> <span class='keyglyph'>::</span> <span class='conid'>GESubstArrow</span>
<a name="line-107"></a><span class='definition'>processGeneralEntity</span> <span class='varid'>context</span> <span class='varid'>recl</span>
<a name="line-108"></a> <span class='keyglyph'>=</span> <span class='varid'>choiceA</span> <span class='keyglyph'>[</span> <span class='varid'>isElem</span> <span class='conop'>:-></span> <span class='layout'>(</span> <span class='varid'>processAttrl</span> <span class='layout'>(</span><span class='varid'>processChildren</span> <span class='varid'>substEntitiesInAttrValue</span><span class='layout'>)</span>
<a name="line-109"></a> <span class='varop'>>>></span>
<a name="line-110"></a> <span class='varid'>processChildren</span> <span class='layout'>(</span><span class='varid'>processGeneralEntity</span> <span class='varid'>context</span> <span class='varid'>recl</span><span class='layout'>)</span>
<a name="line-111"></a> <span class='layout'>)</span>
<a name="line-112"></a> <span class='layout'>,</span> <span class='varid'>isDTDDoctype</span> <span class='conop'>:-></span> <span class='varid'>processChildren</span> <span class='layout'>(</span><span class='varid'>processGeneralEntity</span> <span class='varid'>context</span> <span class='varid'>recl</span><span class='layout'>)</span>
<a name="line-113"></a> <span class='layout'>,</span> <span class='varid'>isDTDEntity</span> <span class='conop'>:-></span> <span class='varid'>addEntityDecl</span>
<a name="line-114"></a> <span class='layout'>,</span> <span class='varid'>isDTDAttlist</span> <span class='conop'>:-></span> <span class='varid'>substEntitiesInAttrDefaultValue</span>
<a name="line-115"></a> <span class='layout'>,</span> <span class='varid'>isEntityRef</span> <span class='conop'>:-></span> <span class='varid'>substEntityRef</span>
<a name="line-116"></a> <span class='layout'>,</span> <span class='varid'>this</span> <span class='conop'>:-></span> <span class='varid'>this</span>
<a name="line-117"></a> <span class='keyglyph'>]</span>
<a name="line-118"></a> <span class='keyword'>where</span>
<a name="line-119"></a> <span class='varid'>addEntityDecl</span> <span class='keyglyph'>::</span> <span class='conid'>GEArrow</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-120"></a> <span class='varid'>addEntityDecl</span>
<a name="line-121"></a> <span class='keyglyph'>=</span> <span class='varid'>perform</span> <span class='layout'>(</span> <span class='varid'>choiceA</span> <span class='keyglyph'>[</span> <span class='varid'>isIntern</span> <span class='conop'>:-></span> <span class='varid'>addInternalEntity</span> <span class='comment'>-- don't change sequence of cases</span>
<a name="line-122"></a> <span class='layout'>,</span> <span class='varid'>isExtern</span> <span class='conop'>:-></span> <span class='varid'>addExternalEntity</span>
<a name="line-123"></a> <span class='layout'>,</span> <span class='varid'>isUnparsed</span> <span class='conop'>:-></span> <span class='varid'>addUnparsedEntity</span>
<a name="line-124"></a> <span class='keyglyph'>]</span>
<a name="line-125"></a> <span class='layout'>)</span>
<a name="line-126"></a> <span class='keyword'>where</span>
<a name="line-127"></a> <span class='varid'>isIntern</span> <span class='keyglyph'>=</span> <span class='varid'>none</span> <span class='varop'>`when`</span> <span class='varid'>hasDTDAttr</span> <span class='varid'>k_system</span>
<a name="line-128"></a> <span class='varid'>isExtern</span> <span class='keyglyph'>=</span> <span class='varid'>none</span> <span class='varop'>`when`</span> <span class='varid'>hasDTDAttr</span> <span class='varid'>k_ndata</span>
<a name="line-129"></a> <span class='varid'>isUnparsed</span> <span class='keyglyph'>=</span> <span class='varid'>this</span>
<a name="line-130"></a>
<a name="line-131"></a> <span class='varid'>addInternalEntity</span> <span class='keyglyph'>::</span> <span class='conid'>GEArrow</span> <span class='conid'>XmlTree</span> <span class='varid'>b</span>
<a name="line-132"></a> <span class='varid'>addInternalEntity</span>
<a name="line-133"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='layout'>(</span> <span class='varid'>getDTDAttrValue</span> <span class='varid'>a_name</span>
<a name="line-134"></a> <span class='varop'>>>></span>
<a name="line-135"></a> <span class='varid'>traceValue</span> <span class='num'>2</span> <span class='layout'>(</span><span class='layout'>(</span><span class='str'>"processGeneralEntity: general entity definition for "</span> <span class='varop'>++</span><span class='layout'>)</span> <span class='varop'>.</span> <span class='varid'>show</span><span class='layout'>)</span>
<a name="line-136"></a> <span class='layout'>)</span>
<a name="line-137"></a> <span class='varop'>&&&</span>
<a name="line-138"></a> <span class='varid'>xshow</span> <span class='layout'>(</span><span class='varid'>getChildren</span> <span class='varop'>>>></span> <span class='varid'>isText</span><span class='layout'>)</span>
<a name="line-139"></a> <span class='layout'>)</span>
<a name="line-140"></a> <span class='varop'>>>></span>
<a name="line-141"></a> <span class='varid'>applyA</span> <span class='layout'>(</span> <span class='varid'>arr2</span> <span class='varop'>$</span> <span class='keyglyph'>\</span> <span class='varid'>entity</span> <span class='varid'>str</span> <span class='keyglyph'>-></span>
<a name="line-142"></a> <span class='varid'>listA</span> <span class='layout'>(</span> <span class='layout'>(</span> <span class='layout'>(</span> <span class='varid'>txt</span> <span class='varid'>str</span>
<a name="line-143"></a> <span class='varop'>>>></span>
<a name="line-144"></a> <span class='varid'>parseXmlGeneralEntityValue</span> <span class='layout'>(</span><span class='str'>"general internal entity"</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>entity</span><span class='layout'>)</span>
<a name="line-145"></a> <span class='varop'>>>></span>
<a name="line-146"></a> <span class='varid'>filterErrorMsg</span>
<a name="line-147"></a> <span class='layout'>)</span>
<a name="line-148"></a> <span class='varop'>`orElse`</span> <span class='varid'>txt</span> <span class='str'>""</span>
<a name="line-149"></a> <span class='layout'>)</span>
<a name="line-150"></a> <span class='varop'>>>></span>
<a name="line-151"></a> <span class='varid'>processGeneralEntity</span> <span class='conid'>ReferenceInEntityValue</span> <span class='layout'>(</span><span class='varid'>entity</span> <span class='conop'>:</span> <span class='varid'>recl</span><span class='layout'>)</span>
<a name="line-152"></a> <span class='layout'>)</span>
<a name="line-153"></a> <span class='varop'>>>></span>
<a name="line-154"></a> <span class='varid'>applyA</span> <span class='layout'>(</span><span class='varid'>arr</span> <span class='varop'>$</span> <span class='keyglyph'>\</span> <span class='varid'>ts</span> <span class='keyglyph'>-></span> <span class='varid'>insertEntity</span> <span class='layout'>(</span><span class='varid'>substInternal</span> <span class='varid'>ts</span><span class='layout'>)</span> <span class='varid'>entity</span><span class='layout'>)</span>
<a name="line-155"></a> <span class='layout'>)</span>
<a name="line-156"></a> <span class='varop'>>>></span>
<a name="line-157"></a> <span class='varid'>none</span>
<a name="line-158"></a>
<a name="line-159"></a> <span class='varid'>addExternalEntity</span> <span class='keyglyph'>::</span> <span class='conid'>GEArrow</span> <span class='conid'>XmlTree</span> <span class='varid'>b</span>
<a name="line-160"></a> <span class='varid'>addExternalEntity</span>
<a name="line-161"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='layout'>(</span> <span class='varid'>getDTDAttrValue</span> <span class='varid'>a_name</span>
<a name="line-162"></a> <span class='varop'>>>></span>
<a name="line-163"></a> <span class='varid'>traceValue</span> <span class='num'>2</span> <span class='layout'>(</span><span class='layout'>(</span><span class='str'>"processGeneralEntity: external entity definition for "</span> <span class='varop'>++</span><span class='layout'>)</span> <span class='varop'>.</span> <span class='varid'>show</span><span class='layout'>)</span>
<a name="line-164"></a> <span class='layout'>)</span>
<a name="line-165"></a> <span class='varop'>&&&</span>
<a name="line-166"></a> <span class='varid'>getDTDAttrValue</span> <span class='varid'>a_url</span> <span class='comment'>-- the absolute URL, not the relative in attr: k_system</span>
<a name="line-167"></a> <span class='layout'>)</span>
<a name="line-168"></a> <span class='varop'>>>></span>
<a name="line-169"></a> <span class='varid'>applyA</span> <span class='layout'>(</span><span class='varid'>arr2</span> <span class='varop'>$</span> <span class='keyglyph'>\</span> <span class='varid'>entity</span> <span class='varid'>uri</span> <span class='keyglyph'>-></span> <span class='varid'>insertEntity</span> <span class='layout'>(</span><span class='varid'>substExternalParsed1Time</span> <span class='varid'>uri</span><span class='layout'>)</span> <span class='varid'>entity</span><span class='layout'>)</span>
<a name="line-170"></a> <span class='varop'>>>></span>
<a name="line-171"></a> <span class='varid'>none</span>
<a name="line-172"></a>
<a name="line-173"></a> <span class='varid'>addUnparsedEntity</span> <span class='keyglyph'>::</span> <span class='conid'>GEArrow</span> <span class='conid'>XmlTree</span> <span class='varid'>b</span>
<a name="line-174"></a> <span class='varid'>addUnparsedEntity</span>
<a name="line-175"></a> <span class='keyglyph'>=</span> <span class='varid'>getDTDAttrValue</span> <span class='varid'>a_name</span>
<a name="line-176"></a> <span class='varop'>>>></span>
<a name="line-177"></a> <span class='varid'>traceValue</span> <span class='num'>2</span> <span class='layout'>(</span><span class='layout'>(</span><span class='str'>"processGeneralEntity: unparsed entity definition for "</span> <span class='varop'>++</span><span class='layout'>)</span> <span class='varop'>.</span> <span class='varid'>show</span><span class='layout'>)</span>
<a name="line-178"></a> <span class='varop'>>>></span>
<a name="line-179"></a> <span class='varid'>applyA</span> <span class='layout'>(</span><span class='varid'>arr</span> <span class='layout'>(</span><span class='varid'>insertEntity</span> <span class='varid'>substUnparsed</span><span class='layout'>)</span><span class='layout'>)</span>
<a name="line-180"></a> <span class='varop'>>>></span>
<a name="line-181"></a> <span class='varid'>none</span>
<a name="line-182"></a>
<a name="line-183"></a> <span class='varid'>insertEntity</span> <span class='keyglyph'>::</span> <span class='layout'>(</span><span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>GESubstArrow</span><span class='layout'>)</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>GEArrow</span> <span class='varid'>b</span> <span class='varid'>b</span>
<a name="line-184"></a> <span class='varid'>insertEntity</span> <span class='varid'>fct</span> <span class='varid'>entity</span>
<a name="line-185"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='varid'>getUserState</span>
<a name="line-186"></a> <span class='varop'>>>></span>
<a name="line-187"></a> <span class='varid'>applyA</span> <span class='layout'>(</span><span class='varid'>arr</span> <span class='varid'>checkDefined</span><span class='layout'>)</span>
<a name="line-188"></a> <span class='layout'>)</span>
<a name="line-189"></a> <span class='varop'>`guards`</span>
<a name="line-190"></a> <span class='varid'>addEntity</span> <span class='varid'>fct</span> <span class='varid'>entity</span>
<a name="line-191"></a> <span class='keyword'>where</span>
<a name="line-192"></a> <span class='varid'>checkDefined</span> <span class='varid'>geEnv</span>
<a name="line-193"></a> <span class='keyglyph'>=</span> <span class='varid'>maybe</span> <span class='varid'>ok</span> <span class='varid'>alreadyDefined</span> <span class='varop'>.</span> <span class='varid'>lookupGeEnv</span> <span class='varid'>entity</span> <span class='varop'>$</span> <span class='varid'>geEnv</span>
<a name="line-194"></a> <span class='keyword'>where</span>
<a name="line-195"></a> <span class='varid'>ok</span> <span class='keyglyph'>=</span> <span class='varid'>this</span>
<a name="line-196"></a> <span class='varid'>alreadyDefined</span> <span class='keyword'>_</span>
<a name="line-197"></a> <span class='keyglyph'>=</span> <span class='varid'>issueWarn</span> <span class='layout'>(</span><span class='str'>"entity "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>entity</span> <span class='varop'>++</span> <span class='str'>" already defined, repeated definition ignored"</span><span class='layout'>)</span>
<a name="line-198"></a>
<a name="line-199"></a> <span class='varid'>addEntity</span> <span class='keyglyph'>::</span> <span class='layout'>(</span><span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>GESubstArrow</span><span class='layout'>)</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>GEArrow</span> <span class='varid'>b</span> <span class='varid'>b</span>
<a name="line-200"></a> <span class='varid'>addEntity</span> <span class='varid'>fct</span> <span class='varid'>entity</span>
<a name="line-201"></a> <span class='keyglyph'>=</span> <span class='varid'>changeUserState</span> <span class='varid'>ins</span>
<a name="line-202"></a> <span class='keyword'>where</span>
<a name="line-203"></a> <span class='varid'>ins</span> <span class='keyword'>_</span> <span class='varid'>geEnv</span> <span class='keyglyph'>=</span> <span class='varid'>addGeEntry</span> <span class='varid'>entity</span> <span class='layout'>(</span><span class='varid'>fct</span> <span class='varid'>entity</span><span class='layout'>)</span> <span class='varid'>geEnv</span>
<a name="line-204"></a>
<a name="line-205"></a> <span class='varid'>substEntitiesInAttrDefaultValue</span> <span class='keyglyph'>::</span> <span class='conid'>GEArrow</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-206"></a> <span class='varid'>substEntitiesInAttrDefaultValue</span>
<a name="line-207"></a> <span class='keyglyph'>=</span> <span class='varid'>applyA</span> <span class='layout'>(</span> <span class='varid'>xshow</span> <span class='layout'>(</span> <span class='varid'>getDTDAttrValue</span> <span class='varid'>a_default</span> <span class='comment'>-- parse the default value</span>
<a name="line-208"></a> <span class='varop'>>>></span> <span class='comment'>-- substitute entities</span>
<a name="line-209"></a> <span class='varid'>mkText</span> <span class='comment'>-- and convert value into a string</span>
<a name="line-210"></a> <span class='varop'>>>></span>
<a name="line-211"></a> <span class='varid'>parseXmlAttrValue</span> <span class='str'>"default value of attribute"</span>
<a name="line-212"></a> <span class='varop'>>>></span>
<a name="line-213"></a> <span class='varid'>filterErrorMsg</span>
<a name="line-214"></a> <span class='varop'>>>></span>
<a name="line-215"></a> <span class='varid'>substEntitiesInAttrValue</span>
<a name="line-216"></a> <span class='layout'>)</span>
<a name="line-217"></a> <span class='varop'>>>></span> <span class='varid'>arr</span> <span class='layout'>(</span><span class='varid'>setDTDAttrValue</span> <span class='varid'>a_default</span><span class='layout'>)</span>
<a name="line-218"></a> <span class='layout'>)</span>
<a name="line-219"></a> <span class='varop'>`when`</span> <span class='varid'>hasDTDAttr</span> <span class='varid'>a_default</span>
<a name="line-220"></a>
<a name="line-221"></a> <span class='varid'>substEntitiesInAttrValue</span> <span class='keyglyph'>::</span> <span class='conid'>GEArrow</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-222"></a> <span class='varid'>substEntitiesInAttrValue</span>
<a name="line-223"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='varid'>processGeneralEntity</span> <span class='conid'>ReferenceInAttributeValue</span> <span class='varid'>recl</span>
<a name="line-224"></a> <span class='varop'>`when`</span>
<a name="line-225"></a> <span class='varid'>isEntityRef</span>
<a name="line-226"></a> <span class='layout'>)</span>
<a name="line-227"></a> <span class='varop'>>>></span>
<a name="line-228"></a> <span class='varid'>changeText</span> <span class='varid'>normalizeWhiteSpace</span>
<a name="line-229"></a> <span class='varop'>>>></span>
<a name="line-230"></a> <span class='varid'>transfCharRef</span>
<a name="line-231"></a> <span class='keyword'>where</span>
<a name="line-232"></a> <span class='varid'>normalizeWhiteSpace</span> <span class='keyglyph'>=</span> <span class='varid'>map</span> <span class='layout'>(</span> <span class='keyglyph'>\</span><span class='varid'>c</span> <span class='keyglyph'>-></span> <span class='keyword'>if</span> <span class='varid'>c</span> <span class='varop'>`elem`</span> <span class='str'>"\n\t\r"</span> <span class='keyword'>then</span> <span class='chr'>' '</span> <span class='keyword'>else</span> <span class='varid'>c</span> <span class='layout'>)</span>
<a name="line-233"></a>
<a name="line-234"></a>
<a name="line-235"></a> <span class='varid'>substEntityRef</span> <span class='keyglyph'>::</span> <span class='conid'>GEArrow</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-236"></a> <span class='varid'>substEntityRef</span>
<a name="line-237"></a> <span class='keyglyph'>=</span> <span class='varid'>applyA</span> <span class='layout'>(</span> <span class='layout'>(</span> <span class='layout'>(</span> <span class='varid'>getEntityRef</span> <span class='comment'>-- get the entity name and the env</span>
<a name="line-238"></a> <span class='varop'>>>></span> <span class='comment'>-- and compute the arrow to be applied</span>
<a name="line-239"></a> <span class='varid'>traceValue</span> <span class='num'>2</span> <span class='layout'>(</span><span class='layout'>(</span><span class='str'>"processGeneralEntity: entity reference for entity "</span> <span class='varop'>++</span><span class='layout'>)</span> <span class='varop'>.</span> <span class='varid'>show</span><span class='layout'>)</span>
<a name="line-240"></a> <span class='varop'>>>></span>
<a name="line-241"></a> <span class='varid'>traceMsg</span> <span class='num'>3</span> <span class='layout'>(</span><span class='str'>"recursion list = "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>recl</span><span class='layout'>)</span>
<a name="line-242"></a> <span class='layout'>)</span>
<a name="line-243"></a> <span class='varop'>&&&</span>
<a name="line-244"></a> <span class='varid'>getUserState</span>
<a name="line-245"></a> <span class='layout'>)</span> <span class='varop'>>>></span>
<a name="line-246"></a> <span class='varid'>arr2</span> <span class='varid'>substA</span>
<a name="line-247"></a> <span class='layout'>)</span>
<a name="line-248"></a> <span class='varop'>`orElse`</span> <span class='varid'>this</span>
<a name="line-249"></a> <span class='keyword'>where</span>
<a name="line-250"></a> <span class='varid'>substA</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>GEEnv</span> <span class='keyglyph'>-></span> <span class='conid'>GEArrow</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-251"></a> <span class='varid'>substA</span> <span class='varid'>entity</span> <span class='varid'>geEnv</span>
<a name="line-252"></a> <span class='keyglyph'>=</span> <span class='varid'>maybe</span> <span class='varid'>entityNotFound</span> <span class='varid'>entityFound</span> <span class='varop'>.</span> <span class='varid'>lookupGeEnv</span> <span class='varid'>entity</span> <span class='varop'>$</span> <span class='varid'>geEnv</span>
<a name="line-253"></a> <span class='keyword'>where</span>
<a name="line-254"></a> <span class='varid'>errMsg</span> <span class='varid'>msg</span>
<a name="line-255"></a> <span class='keyglyph'>=</span> <span class='varid'>issueErr</span> <span class='varid'>msg</span>
<a name="line-256"></a>
<a name="line-257"></a> <span class='varid'>entityNotFound</span>
<a name="line-258"></a> <span class='keyglyph'>=</span> <span class='varid'>errMsg</span> <span class='layout'>(</span><span class='str'>"general entity reference \"&"</span> <span class='varop'>++</span> <span class='varid'>entity</span> <span class='varop'>++</span> <span class='str'>";\" not processed, no definition found, (forward reference?)"</span><span class='layout'>)</span>
<a name="line-259"></a>
<a name="line-260"></a> <span class='varid'>entityFound</span> <span class='varid'>fct</span>
<a name="line-261"></a> <span class='keyglyph'>|</span> <span class='varid'>entity</span> <span class='varop'>`elem`</span> <span class='varid'>recl</span>
<a name="line-262"></a> <span class='keyglyph'>=</span> <span class='varid'>errMsg</span> <span class='layout'>(</span><span class='str'>"general entity reference \"&"</span> <span class='varop'>++</span> <span class='varid'>entity</span> <span class='varop'>++</span> <span class='str'>";\" not processed, cyclic definition"</span><span class='layout'>)</span>
<a name="line-263"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span>
<a name="line-264"></a> <span class='keyglyph'>=</span> <span class='varid'>fct</span> <span class='varid'>context</span> <span class='varid'>recl</span>
<a name="line-265"></a>
<a name="line-266"></a> <span class='varid'>substExternalParsed1Time</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'>GESubstArrow</span>
<a name="line-267"></a> <span class='varid'>substExternalParsed1Time</span> <span class='varid'>uri</span> <span class='varid'>entity</span> <span class='varid'>cx</span> <span class='varid'>rl</span>
<a name="line-268"></a> <span class='keyglyph'>=</span> <span class='varid'>perform</span> <span class='layout'>(</span> <span class='varid'>traceMsg</span> <span class='num'>2</span> <span class='layout'>(</span><span class='str'>"substExternalParsed1Time: read and parse external parsed entity "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>entity</span><span class='layout'>)</span>
<a name="line-269"></a> <span class='varop'>>>></span>
<a name="line-270"></a> <span class='varid'>runInLocalURIContext</span> <span class='layout'>(</span> <span class='varid'>root</span> <span class='keyglyph'>[</span><span class='varid'>sattr</span> <span class='varid'>a_source</span> <span class='varid'>uri</span><span class='keyglyph'>]</span> <span class='conid'>[]</span> <span class='comment'>-- uri must be an absolute uri</span>
<a name="line-271"></a> <span class='varop'>>>></span> <span class='comment'>-- abs uri is computed during parameter entity handling</span>
<a name="line-272"></a> <span class='varid'>listA</span> <span class='layout'>(</span> <span class='varid'>getXmlEntityContents</span>
<a name="line-273"></a> <span class='varop'>>>></span>
<a name="line-274"></a> <span class='varid'>processExternalEntityContents</span>
<a name="line-275"></a> <span class='layout'>)</span>
<a name="line-276"></a> <span class='layout'>)</span>
<a name="line-277"></a> <span class='varop'>>>></span>
<a name="line-278"></a> <span class='varid'>applyA</span> <span class='layout'>(</span> <span class='varid'>arr</span> <span class='varop'>$</span> <span class='keyglyph'>\</span> <span class='varid'>ts</span> <span class='keyglyph'>-></span> <span class='varid'>addEntity</span> <span class='layout'>(</span><span class='varid'>substExternalParsed</span> <span class='varid'>ts</span><span class='layout'>)</span> <span class='varid'>entity</span> <span class='layout'>)</span>
<a name="line-279"></a> <span class='layout'>)</span>
<a name="line-280"></a> <span class='varop'>>>></span>
<a name="line-281"></a> <span class='varid'>processGeneralEntity</span> <span class='varid'>cx</span> <span class='varid'>rl</span>
<a name="line-282"></a> <span class='keyword'>where</span>
<a name="line-283"></a> <span class='varid'>processExternalEntityContents</span> <span class='keyglyph'>::</span> <span class='conid'>IOStateArrow</span> <span class='varid'>s</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-284"></a> <span class='varid'>processExternalEntityContents</span>
<a name="line-285"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='layout'>(</span> <span class='varid'>documentStatusOk</span> <span class='comment'>-- reading entity succeeded</span>
<a name="line-286"></a> <span class='varop'>>>></span> <span class='comment'>-- with content stored in a text node</span>
<a name="line-287"></a> <span class='layout'>(</span><span class='varid'>getChildren</span> <span class='varop'>>>></span> <span class='varid'>isText</span><span class='layout'>)</span>
<a name="line-288"></a> <span class='layout'>)</span>
<a name="line-289"></a> <span class='varop'>`guards`</span>
<a name="line-290"></a> <span class='layout'>(</span> <span class='varid'>getChildren</span>
<a name="line-291"></a> <span class='varop'>>>></span>
<a name="line-292"></a> <span class='varid'>parseXmlGeneralEntityValue</span> <span class='layout'>(</span><span class='str'>"external parsed entity "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>entity</span><span class='layout'>)</span>
<a name="line-293"></a> <span class='varop'>>>></span>
<a name="line-294"></a> <span class='varid'>filterErrorMsg</span>
<a name="line-295"></a> <span class='layout'>)</span>
<a name="line-296"></a> <span class='layout'>)</span>
<a name="line-297"></a> <span class='varop'>`orElse`</span>
<a name="line-298"></a> <span class='varid'>issueErr</span> <span class='layout'>(</span><span class='str'>"illegal value for external parsed entity "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>entity</span><span class='layout'>)</span>
<a name="line-299"></a>
<a name="line-300"></a> <span class='varid'>substExternalParsed</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'>GESubstArrow</span>
<a name="line-301"></a> <span class='varid'>substExternalParsed</span> <span class='varid'>ts</span> <span class='varid'>entity</span> <span class='conid'>ReferenceInContent</span> <span class='varid'>rl</span> <span class='keyglyph'>=</span> <span class='varid'>includedIfValidating</span> <span class='varid'>ts</span> <span class='varid'>rl</span> <span class='varid'>entity</span>
<a name="line-302"></a> <span class='varid'>substExternalParsed</span> <span class='keyword'>_</span> <span class='varid'>entity</span> <span class='conid'>ReferenceInAttributeValue</span> <span class='keyword'>_</span>
<a name="line-303"></a> <span class='keyglyph'>=</span> <span class='varid'>forbidden</span> <span class='varid'>entity</span> <span class='str'>"external parsed general"</span> <span class='str'>"in attribute value"</span>
<a name="line-304"></a> <span class='varid'>substExternalParsed</span> <span class='keyword'>_</span> <span class='keyword'>_</span> <span class='conid'>ReferenceInEntityValue</span> <span class='keyword'>_</span>
<a name="line-305"></a> <span class='keyglyph'>=</span> <span class='varid'>bypassed</span>
<a name="line-306"></a>
<a name="line-307"></a> <span class='varid'>substInternal</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'>GESubstArrow</span>
<a name="line-308"></a> <span class='varid'>substInternal</span> <span class='varid'>ts</span> <span class='varid'>entity</span> <span class='conid'>ReferenceInContent</span> <span class='varid'>rl</span> <span class='keyglyph'>=</span> <span class='varid'>included</span> <span class='varid'>ts</span> <span class='varid'>rl</span> <span class='varid'>entity</span>
<a name="line-309"></a> <span class='varid'>substInternal</span> <span class='varid'>ts</span> <span class='varid'>entity</span> <span class='conid'>ReferenceInAttributeValue</span> <span class='varid'>rl</span><span class='keyglyph'>=</span> <span class='varid'>includedInLiteral</span> <span class='varid'>ts</span> <span class='varid'>rl</span> <span class='varid'>entity</span>
<a name="line-310"></a> <span class='varid'>substInternal</span> <span class='keyword'>_</span> <span class='keyword'>_</span> <span class='conid'>ReferenceInEntityValue</span> <span class='keyword'>_</span> <span class='keyglyph'>=</span> <span class='varid'>bypassed</span>
<a name="line-311"></a>
<a name="line-312"></a> <span class='varid'>substUnparsed</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>GESubstArrow</span>
<a name="line-313"></a> <span class='varid'>substUnparsed</span> <span class='varid'>entity</span> <span class='conid'>ReferenceInContent</span> <span class='keyword'>_</span> <span class='keyglyph'>=</span> <span class='varid'>forbidden</span> <span class='varid'>entity</span> <span class='str'>"unparsed"</span> <span class='str'>"content"</span>
<a name="line-314"></a> <span class='varid'>substUnparsed</span> <span class='varid'>entity</span> <span class='conid'>ReferenceInAttributeValue</span> <span class='keyword'>_</span> <span class='keyglyph'>=</span> <span class='varid'>forbidden</span> <span class='varid'>entity</span> <span class='str'>"unparsed"</span> <span class='str'>"attribute value"</span>
<a name="line-315"></a> <span class='varid'>substUnparsed</span> <span class='varid'>entity</span> <span class='conid'>ReferenceInEntityValue</span> <span class='keyword'>_</span> <span class='keyglyph'>=</span> <span class='varid'>forbidden</span> <span class='varid'>entity</span> <span class='str'>"unparsed"</span> <span class='str'>"entity value"</span>
<a name="line-316"></a>
<a name="line-317"></a> <span class='comment'>-- XML 1.0 chapter 4.4.2</span>
<a name="line-318"></a> <span class='varid'>included</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>RecList</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>GEArrow</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-319"></a> <span class='varid'>included</span> <span class='varid'>ts</span> <span class='varid'>rl</span> <span class='varid'>entity</span>
<a name="line-320"></a> <span class='keyglyph'>=</span> <span class='varid'>arrL</span> <span class='layout'>(</span><span class='varid'>const</span> <span class='varid'>ts</span><span class='layout'>)</span>
<a name="line-321"></a> <span class='varop'>>>></span>
<a name="line-322"></a> <span class='varid'>processGeneralEntity</span> <span class='varid'>context</span> <span class='layout'>(</span><span class='varid'>entity</span> <span class='conop'>:</span> <span class='varid'>rl</span><span class='layout'>)</span>
<a name="line-323"></a>
<a name="line-324"></a> <span class='comment'>-- XML 1.0 chapter 4.4.3</span>
<a name="line-325"></a> <span class='varid'>includedIfValidating</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>RecList</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>GEArrow</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-326"></a> <span class='varid'>includedIfValidating</span>
<a name="line-327"></a> <span class='keyglyph'>=</span> <span class='varid'>included</span>
<a name="line-328"></a>
<a name="line-329"></a> <span class='comment'>-- XML 1.0 chapter 4.4.4</span>
<a name="line-330"></a> <span class='varid'>forbidden</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'>GEArrow</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-331"></a> <span class='varid'>forbidden</span> <span class='varid'>entity</span> <span class='varid'>msg</span> <span class='varid'>cx</span>
<a name="line-332"></a> <span class='keyglyph'>=</span> <span class='varid'>issueErr</span> <span class='layout'>(</span><span class='str'>"reference of "</span> <span class='varop'>++</span> <span class='varid'>msg</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>entity</span> <span class='varop'>++</span> <span class='str'>" forbidden in "</span> <span class='varop'>++</span> <span class='varid'>cx</span><span class='layout'>)</span>
<a name="line-333"></a>
<a name="line-334"></a> <span class='comment'>-- XML 1.0 chapter 4.4.5</span>
<a name="line-335"></a> <span class='varid'>includedInLiteral</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>RecList</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>GEArrow</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-336"></a> <span class='varid'>includedInLiteral</span>
<a name="line-337"></a> <span class='keyglyph'>=</span> <span class='varid'>included</span>
<a name="line-338"></a>
<a name="line-339"></a> <span class='comment'>-- XML 1.0 chapter 4.4.7</span>
<a name="line-340"></a> <span class='varid'>bypassed</span> <span class='keyglyph'>::</span> <span class='conid'>GEArrow</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-341"></a> <span class='varid'>bypassed</span>
<a name="line-342"></a> <span class='keyglyph'>=</span> <span class='varid'>this</span>
<a name="line-343"></a>
<a name="line-344"></a><span class='comment'>-- ------------------------------------------------------------</span>
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