hxt-8.0.0: doc/hdoc/src/Text-XML-HXT-Parser-DTDProcessing.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.Parser.DTDProcessing
<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: DTDProcessing.hs,v 1.15 2006/11/12 14:53:00 hxml Exp $
<a name="line-12"></a>
<a name="line-13"></a> DTD processing function for
<a name="line-14"></a> including external parts of a DTD
<a name="line-15"></a> parameter entity substitution and general entity substitution
<a name="line-16"></a>
<a name="line-17"></a>-}</span>
<a name="line-18"></a>
<a name="line-19"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-20"></a>
<a name="line-21"></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'>Parser</span><span class='varop'>.</span><span class='conid'>DTDProcessing</span>
<a name="line-22"></a> <span class='layout'>(</span> <span class='varid'>getWellformedDoc</span>
<a name="line-23"></a> <span class='layout'>,</span> <span class='varid'>checkWellformedDoc</span>
<a name="line-24"></a> <span class='layout'>,</span> <span class='varid'>processDTD</span>
<a name="line-25"></a> <span class='layout'>,</span> <span class='varid'>processGeneralEntities</span>
<a name="line-26"></a> <span class='layout'>)</span>
<a name="line-27"></a><span class='keyword'>where</span>
<a name="line-28"></a>
<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'>DOM</span><span class='varop'>.</span><span class='conid'>XmlTree</span>
<a name="line-30"></a>
<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'>Parser</span><span class='varop'>.</span><span class='conid'>XmlOutput</span>
<a name="line-32"></a> <span class='layout'>(</span> <span class='varid'>traceTree</span>
<a name="line-33"></a> <span class='layout'>,</span> <span class='varid'>traceSource</span>
<a name="line-34"></a> <span class='layout'>,</span> <span class='varid'>traceMsg</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'>Parser</span><span class='varop'>.</span><span class='conid'>XmlParser</span>
<a name="line-38"></a> <span class='layout'>(</span> <span class='varid'>parseXmlDoc</span>
<a name="line-39"></a> <span class='layout'>,</span> <span class='varid'>parseXmlDTDPart</span>
<a name="line-40"></a> <span class='layout'>,</span> <span class='varid'>parseXmlAttrValue</span>
<a name="line-41"></a> <span class='layout'>,</span> <span class='varid'>parseXmlGeneralEntityValue</span>
<a name="line-42"></a> <span class='layout'>)</span>
<a name="line-43"></a>
<a name="line-44"></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'>XmlDTDParser</span>
<a name="line-45"></a> <span class='layout'>(</span> <span class='varid'>parseXmlDTDdecl</span>
<a name="line-46"></a> <span class='layout'>,</span> <span class='varid'>parseXmlDTDdeclPart</span>
<a name="line-47"></a> <span class='layout'>,</span> <span class='varid'>parseXmlDTDEntityValue</span>
<a name="line-48"></a> <span class='layout'>)</span>
<a name="line-49"></a>
<a name="line-50"></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'>XmlInput</span>
<a name="line-51"></a> <span class='layout'>(</span> <span class='varid'>getXmlContents</span>
<a name="line-52"></a> <span class='layout'>,</span> <span class='varid'>getXmlEntityContents</span>
<a name="line-53"></a> <span class='layout'>,</span> <span class='varid'>runInLocalURIContext</span>
<a name="line-54"></a> <span class='layout'>,</span> <span class='varid'>runInNewURIContext</span>
<a name="line-55"></a> <span class='layout'>,</span> <span class='varid'>getBaseURI</span>
<a name="line-56"></a> <span class='layout'>,</span> <span class='varid'>setBaseURI</span>
<a name="line-57"></a> <span class='layout'>,</span> <span class='varid'>getAbsolutURI</span>
<a name="line-58"></a> <span class='layout'>,</span> <span class='varid'>isStandaloneDocument</span>
<a name="line-59"></a> <span class='layout'>)</span>
<a name="line-60"></a>
<a name="line-61"></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'>EditFilters</span>
<a name="line-62"></a> <span class='layout'>(</span> <span class='varid'>transfCharRef</span>
<a name="line-63"></a> <span class='layout'>,</span> <span class='varid'>transfAllCharRef</span>
<a name="line-64"></a> <span class='layout'>)</span>
<a name="line-65"></a>
<a name="line-66"></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'>XmlState</span>
<a name="line-67"></a>
<a name="line-68"></a><span class='keyword'>import</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>Maybe</span>
<a name="line-69"></a>
<a name="line-70"></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-71"></a> <span class='layout'>(</span> <span class='conid'>Map</span>
<a name="line-72"></a> <span class='layout'>,</span> <span class='varid'>empty</span>
<a name="line-73"></a> <span class='layout'>,</span> <span class='varid'>lookup</span>
<a name="line-74"></a> <span class='layout'>,</span> <span class='varid'>insert</span>
<a name="line-75"></a> <span class='comment'>-- , foldWithKey</span>
<a name="line-76"></a> <span class='layout'>)</span>
<a name="line-77"></a>
<a name="line-78"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-79"></a><span class='comment'>--</span>
<a name="line-80"></a><span class='comment'>-- the "main" building blocks</span>
<a name="line-81"></a>
<a name="line-82"></a><span class='comment'>-- |</span>
<a name="line-83"></a><span class='comment'>-- monadic filter for reading, parsing and checking a wellformed document.</span>
<a name="line-84"></a><span class='comment'>-- the input tree must consist of a root node with a source attribute</span>
<a name="line-85"></a><span class='comment'>-- in its attribute list.</span>
<a name="line-86"></a><span class='comment'>--</span>
<a name="line-87"></a><span class='comment'>-- All attributes from the document root are copied into the system state,</span>
<a name="line-88"></a><span class='comment'>-- and may be queried by the monadic filters, e.g. trace options.</span>
<a name="line-89"></a><span class='comment'>--</span>
<a name="line-90"></a><span class='comment'>-- Result is the single element list containing the well-formed document tree</span>
<a name="line-91"></a><span class='comment'>-- or, in case of errors, the document root with an empty list as children</span>
<a name="line-92"></a><span class='comment'>-- and attributes 'a_status' and 'a_module' for error level and the module,</span>
<a name="line-93"></a><span class='comment'>-- where the error occured.</span>
<a name="line-94"></a><span class='comment'>--</span>
<a name="line-95"></a><span class='comment'>-- this is a shortcut for 'getXmlContents' .\>\> 'checkWellformedDoc'</span>
<a name="line-96"></a><span class='comment'>--</span>
<a name="line-97"></a><span class='comment'>-- example for a main program:</span>
<a name="line-98"></a><span class='comment'>--</span>
<a name="line-99"></a><span class='comment'>-- @</span>
<a name="line-100"></a><span class='comment'>-- main =</span>
<a name="line-101"></a><span class='comment'>-- run\' \$</span>
<a name="line-102"></a><span class='comment'>-- do</span>
<a name="line-103"></a><span class='comment'>-- res \<- getWellformedDoc \$ newDocument \"myfile.xml\"</span>
<a name="line-104"></a><span class='comment'>-- ...</span>
<a name="line-105"></a><span class='comment'>-- @</span>
<a name="line-106"></a>
<a name="line-107"></a><a name="getWellformedDoc"></a><span class='definition'>getWellformedDoc</span> <span class='keyglyph'>::</span> <span class='conid'>XmlStateFilter</span> <span class='varid'>state</span>
<a name="line-108"></a><span class='definition'>getWellformedDoc</span>
<a name="line-109"></a> <span class='keyglyph'>=</span> <span class='varid'>setSystemParams</span>
<a name="line-110"></a> <span class='varop'>.>></span>
<a name="line-111"></a> <span class='varid'>getXmlContents</span>
<a name="line-112"></a> <span class='varop'>.>></span>
<a name="line-113"></a> <span class='varid'>checkWellformedDoc</span>
<a name="line-114"></a>
<a name="line-115"></a><span class='comment'>-- |</span>
<a name="line-116"></a><span class='comment'>-- parses a text node with 'parseXmlDoc', processes the DTD and general entities</span>
<a name="line-117"></a><span class='comment'>-- and transforms all char references into characters</span>
<a name="line-118"></a>
<a name="line-119"></a><a name="checkWellformedDoc"></a><span class='definition'>checkWellformedDoc</span> <span class='keyglyph'>::</span> <span class='conid'>XmlStateFilter</span> <span class='varid'>state</span>
<a name="line-120"></a><span class='definition'>checkWellformedDoc</span>
<a name="line-121"></a> <span class='keyglyph'>=</span> <span class='varid'>parseXmlDoc</span>
<a name="line-122"></a> <span class='varop'>.>></span>
<a name="line-123"></a> <span class='varid'>processDTD</span>
<a name="line-124"></a> <span class='varop'>.>></span>
<a name="line-125"></a> <span class='varid'>processGeneralEntities</span>
<a name="line-126"></a> <span class='varop'>.>></span>
<a name="line-127"></a> <span class='varid'>liftMf</span> <span class='varid'>transfAllCharRef</span>
<a name="line-128"></a>
<a name="line-129"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-130"></a><span class='comment'>--</span>
<a name="line-131"></a>
<a name="line-132"></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-133"></a>
<a name="line-134"></a><a name="DTDState"></a><span class='keyword'>type</span> <span class='conid'>DTDState</span> <span class='varid'>res</span> <span class='keyglyph'>=</span> <span class='conid'>XState</span> <span class='conid'>PeEnv</span> <span class='varid'>res</span>
<a name="line-135"></a>
<a name="line-136"></a><a name="DTDStateFilter"></a><span class='keyword'>type</span> <span class='conid'>DTDStateFilter</span> <span class='keyglyph'>=</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>DTDState</span> <span class='conid'>XmlTrees</span>
<a name="line-137"></a>
<a name="line-138"></a><a name="DTDPart"></a><span class='keyword'>data</span> <span class='conid'>DTDPart</span> <span class='keyglyph'>=</span> <span class='conid'>Internal</span>
<a name="line-139"></a> <span class='keyglyph'>|</span> <span class='conid'>External</span>
<a name="line-140"></a> <span class='keyword'>deriving</span> <span class='layout'>(</span><span class='conid'>Eq</span><span class='layout'>)</span>
<a name="line-141"></a>
<a name="line-142"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-143"></a>
<a name="line-144"></a><a name="PeEnv"></a><span class='keyword'>type</span> <span class='conid'>PeEnv</span> <span class='keyglyph'>=</span> <span class='conid'>M</span><span class='varop'>.</span><span class='conid'>Map</span> <span class='conid'>String</span> <span class='conid'>XmlTree</span>
<a name="line-145"></a>
<a name="line-146"></a><a name="emptyPeEnv"></a><span class='definition'>emptyPeEnv</span> <span class='keyglyph'>::</span> <span class='conid'>PeEnv</span>
<a name="line-147"></a><span class='definition'>emptyPeEnv</span> <span class='keyglyph'>=</span> <span class='conid'>M</span><span class='varop'>.</span><span class='varid'>empty</span>
<a name="line-148"></a>
<a name="line-149"></a><a name="lookupPeEnv"></a><span class='definition'>lookupPeEnv</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>PeEnv</span> <span class='keyglyph'>-></span> <span class='conid'>Maybe</span> <span class='conid'>XmlTree</span>
<a name="line-150"></a><span class='definition'>lookupPeEnv</span> <span class='keyglyph'>=</span> <span class='conid'>M</span><span class='varop'>.</span><span class='varid'>lookup</span>
<a name="line-151"></a>
<a name="line-152"></a><a name="addPeEntry"></a><span class='definition'>addPeEntry</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'>PeEnv</span> <span class='keyglyph'>-></span> <span class='conid'>PeEnv</span>
<a name="line-153"></a><span class='definition'>addPeEntry</span> <span class='keyglyph'>=</span> <span class='conid'>M</span><span class='varop'>.</span><span class='varid'>insert</span>
<a name="line-154"></a>
<a name="line-155"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-156"></a>
<a name="line-157"></a><span class='comment'>-- |</span>
<a name="line-158"></a><span class='comment'>-- a filter for DTD processing</span>
<a name="line-159"></a><span class='comment'>--</span>
<a name="line-160"></a><span class='comment'>-- inclusion of external parts of DTD,</span>
<a name="line-161"></a><span class='comment'>-- parameter entity substitution</span>
<a name="line-162"></a><span class='comment'>-- conditional section evaluation</span>
<a name="line-163"></a><span class='comment'>--</span>
<a name="line-164"></a><span class='comment'>-- input tree must represent a complete document including root node</span>
<a name="line-165"></a>
<a name="line-166"></a><a name="processDTD"></a><span class='definition'>processDTD</span> <span class='keyglyph'>::</span> <span class='conid'>XmlStateFilter</span> <span class='varid'>a</span>
<a name="line-167"></a><span class='definition'>processDTD</span>
<a name="line-168"></a> <span class='keyglyph'>=</span> <span class='varid'>runInLocalURIContext</span>
<a name="line-169"></a> <span class='layout'>(</span> <span class='varid'>processRoot</span>
<a name="line-170"></a> <span class='varop'>.>></span>
<a name="line-171"></a> <span class='varid'>traceTree</span>
<a name="line-172"></a> <span class='varop'>.>></span>
<a name="line-173"></a> <span class='varid'>traceSource</span>
<a name="line-174"></a> <span class='layout'>)</span>
<a name="line-175"></a> <span class='varop'>`whenM`</span> <span class='layout'>(</span> <span class='varid'>isRoot</span> <span class='varop'>.></span> <span class='varid'>getChildren</span> <span class='layout'>)</span>
<a name="line-176"></a> <span class='keyword'>where</span>
<a name="line-177"></a>
<a name="line-178"></a> <span class='varid'>processRoot</span> <span class='keyglyph'>::</span> <span class='conid'>XmlStateFilter</span> <span class='varid'>a</span>
<a name="line-179"></a> <span class='varid'>processRoot</span> <span class='varid'>t</span>
<a name="line-180"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-181"></a> <span class='varid'>sequence_</span> <span class='varop'>.</span> <span class='varid'>map</span> <span class='layout'>(</span><span class='keyglyph'>\</span> <span class='layout'>(</span><span class='varid'>a</span><span class='layout'>,</span> <span class='varid'>ts</span><span class='layout'>)</span> <span class='keyglyph'>-></span> <span class='varid'>setSysParamTree</span> <span class='varid'>a</span> <span class='varid'>ts</span><span class='layout'>)</span> <span class='varop'>.</span> <span class='varid'>toTreel</span> <span class='varop'>.</span> <span class='varid'>getAttrl</span> <span class='varop'>$</span> <span class='varid'>t</span>
<a name="line-182"></a> <span class='varid'>setSysParam</span> <span class='varid'>a_standalone</span> <span class='str'>""</span>
<a name="line-183"></a> <span class='layout'>(</span> <span class='varid'>traceMsg</span> <span class='num'>1</span> <span class='layout'>(</span><span class='str'>"processDTD: process parameter entities"</span><span class='layout'>)</span>
<a name="line-184"></a> <span class='varop'>.>></span>
<a name="line-185"></a> <span class='varid'>liftMf</span> <span class='layout'>(</span><span class='varid'>modifyChildren</span> <span class='varid'>addDoctype</span><span class='layout'>)</span>
<a name="line-186"></a> <span class='varop'>.>></span>
<a name="line-187"></a> <span class='varid'>processChildrenM</span> <span class='varid'>substParamEntities</span>
<a name="line-188"></a> <span class='varop'>.>></span>
<a name="line-189"></a> <span class='varid'>checkResult</span> <span class='str'>"in XML DTD processing"</span>
<a name="line-190"></a> <span class='layout'>)</span> <span class='varop'>`whenM`</span> <span class='varid'>statusOk</span>
<a name="line-191"></a> <span class='varop'>$</span> <span class='varid'>t</span>
<a name="line-192"></a>
<a name="line-193"></a> <span class='comment'>-- Adds an empty DOCTYPE node to document. Needed for documents without a DTD.</span>
<a name="line-194"></a> <span class='comment'>-- Otherwise processor can not substitute predefined entities. If an xml declaration</span>
<a name="line-195"></a> <span class='comment'>-- is present, the node is inserted after this node.</span>
<a name="line-196"></a> <span class='varid'>addDoctype</span> <span class='keyglyph'>::</span> <span class='conid'>XmlSFilter</span>
<a name="line-197"></a> <span class='varid'>addDoctype</span> <span class='varid'>docChilds</span>
<a name="line-198"></a> <span class='keyglyph'>=</span> <span class='keyword'>if</span> <span class='varid'>null</span> <span class='varid'>doctype</span>
<a name="line-199"></a> <span class='keyword'>then</span> <span class='keyword'>if</span> <span class='varid'>null</span> <span class='varid'>xmlDecl</span>
<a name="line-200"></a> <span class='keyword'>then</span> <span class='keyglyph'>[</span><span class='varid'>mkXDTDTree</span> <span class='conid'>DOCTYPE</span> <span class='conid'>[]</span> <span class='conid'>[]</span><span class='keyglyph'>]</span> <span class='varop'>++</span> <span class='varid'>docChilds</span>
<a name="line-201"></a> <span class='keyword'>else</span> <span class='layout'>(</span><span class='varid'>head</span> <span class='varid'>docChilds</span><span class='layout'>)</span> <span class='conop'>:</span> <span class='keyglyph'>[</span><span class='varid'>mkXDTDTree</span> <span class='conid'>DOCTYPE</span> <span class='conid'>[]</span> <span class='conid'>[]</span><span class='keyglyph'>]</span> <span class='varop'>++</span> <span class='layout'>(</span><span class='varid'>tail</span> <span class='varid'>docChilds</span><span class='layout'>)</span>
<a name="line-202"></a> <span class='keyword'>else</span> <span class='varid'>docChilds</span>
<a name="line-203"></a> <span class='keyword'>where</span>
<a name="line-204"></a> <span class='varid'>doctype</span> <span class='keyglyph'>=</span> <span class='varid'>isDoctype</span> <span class='varop'>$$</span> <span class='varid'>docChilds</span>
<a name="line-205"></a> <span class='varid'>xmlDecl</span> <span class='keyglyph'>=</span> <span class='varid'>isPi</span> <span class='varid'>t_xml</span> <span class='varop'>$$</span> <span class='varid'>isXPi</span> <span class='varop'>$$</span> <span class='varid'>docChilds</span>
<a name="line-206"></a>
<a name="line-207"></a>
<a name="line-208"></a><a name="substParamEntities"></a><span class='definition'>substParamEntities</span> <span class='keyglyph'>::</span> <span class='conid'>XmlStateFilter</span> <span class='varid'>a</span>
<a name="line-209"></a><span class='definition'>substParamEntities</span>
<a name="line-210"></a> <span class='keyglyph'>=</span> <span class='varid'>processParamEntities</span>
<a name="line-211"></a> <span class='varop'>`whenM`</span>
<a name="line-212"></a> <span class='varid'>isDoctype</span>
<a name="line-213"></a> <span class='keyword'>where</span>
<a name="line-214"></a>
<a name="line-215"></a> <span class='varid'>processParamEntities</span> <span class='keyglyph'>::</span> <span class='conid'>XmlStateFilter</span> <span class='varid'>a</span>
<a name="line-216"></a> <span class='varid'>processParamEntities</span> <span class='varid'>t'</span>
<a name="line-217"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-218"></a> <span class='layout'>(</span><span class='varid'>dtdPre</span><span class='layout'>,</span> <span class='varid'>envPre</span><span class='layout'>)</span> <span class='keyglyph'><-</span> <span class='varid'>processPredef</span>
<a name="line-219"></a>
<a name="line-220"></a> <span class='comment'>-- process internal part of DTD with initial empty env for parameter entities</span>
<a name="line-221"></a> <span class='layout'>(</span><span class='varid'>dtdInt</span><span class='layout'>,</span> <span class='varid'>envInt</span><span class='layout'>)</span> <span class='keyglyph'><-</span> <span class='varid'>processInt</span> <span class='varid'>envPre</span> <span class='varid'>t'</span>
<a name="line-222"></a>
<a name="line-223"></a> <span class='comment'>-- process external part of DTD with resulting env from internal DTD</span>
<a name="line-224"></a> <span class='varid'>dtdExt</span> <span class='keyglyph'><-</span> <span class='varid'>runInLocalURIContext</span> <span class='layout'>(</span><span class='varid'>processExt</span> <span class='varid'>envInt</span><span class='layout'>)</span> <span class='varid'>t'</span>
<a name="line-225"></a>
<a name="line-226"></a> <span class='comment'>-- merge predefined, internal and external part</span>
<a name="line-227"></a> <span class='varid'>trace</span> <span class='num'>2</span> <span class='str'>"substParamEntities: merge internal and external DTD parts"</span>
<a name="line-228"></a> <span class='varid'>return</span> <span class='layout'>(</span><span class='varid'>replaceChildren</span> <span class='layout'>(</span><span class='varid'>foldl1</span> <span class='varid'>mergeDTDs</span> <span class='keyglyph'>[</span><span class='varid'>dtdPre</span><span class='layout'>,</span> <span class='varid'>dtdInt</span><span class='layout'>,</span> <span class='varid'>dtdExt</span><span class='keyglyph'>]</span><span class='layout'>)</span> <span class='varid'>t'</span><span class='layout'>)</span>
<a name="line-229"></a>
<a name="line-230"></a> <span class='varid'>processPredef</span>
<a name="line-231"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-232"></a> <span class='varid'>trace</span> <span class='num'>2</span> <span class='str'>"substParamEntities: substitute predefined entities"</span>
<a name="line-233"></a> <span class='varid'>chain'</span> <span class='varid'>emptyPeEnv</span> <span class='layout'>(</span><span class='varid'>substParamEntity</span> <span class='conid'>Internal</span> <span class='varop'>$$<</span> <span class='varid'>predefDTDPart</span><span class='layout'>)</span>
<a name="line-234"></a>
<a name="line-235"></a> <span class='varid'>processInt</span> <span class='varid'>env'</span> <span class='varid'>n'</span>
<a name="line-236"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-237"></a> <span class='varid'>trace</span> <span class='num'>2</span> <span class='str'>"substParamEntities: substitute parameter entities in internal DTD part"</span>
<a name="line-238"></a> <span class='varid'>chain'</span> <span class='varid'>env'</span> <span class='layout'>(</span><span class='varid'>substParamEntity</span> <span class='conid'>Internal</span> <span class='varop'>$$<</span> <span class='varid'>getChildren</span> <span class='varid'>n'</span><span class='layout'>)</span>
<a name="line-239"></a>
<a name="line-240"></a> <span class='varid'>processExt</span> <span class='varid'>env'</span> <span class='varid'>n'</span>
<a name="line-241"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-242"></a> <span class='varid'>trace</span> <span class='num'>2</span> <span class='str'>"substParamEntities: process external part of DTD"</span>
<a name="line-243"></a> <span class='varid'>extDtd</span> <span class='keyglyph'><-</span> <span class='varid'>processExternalDTD</span> <span class='varid'>n'</span>
<a name="line-244"></a> <span class='varid'>trace</span> <span class='num'>2</span> <span class='str'>"substParamEntities: substitute parameter entities in external DTD part"</span>
<a name="line-245"></a> <span class='varid'>chain</span> <span class='varid'>env'</span> <span class='layout'>(</span> <span class='layout'>(</span><span class='varid'>substParamEntity</span> <span class='conid'>External</span><span class='layout'>)</span> <span class='varop'>$$<</span> <span class='varid'>extDtd</span><span class='layout'>)</span>
<a name="line-246"></a>
<a name="line-247"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-248"></a><span class='comment'>-- |</span>
<a name="line-249"></a><span class='comment'>-- substitute parameter entities</span>
<a name="line-250"></a><span class='comment'>-- result is the input tree with the list of text nodes as children or an error message</span>
<a name="line-251"></a>
<a name="line-252"></a><a name="substPEref'"></a><span class='definition'>substPEref'</span> <span class='keyglyph'>::</span> <span class='conid'>DTDPart</span> <span class='keyglyph'>-></span> <span class='conid'>PeEnv</span> <span class='keyglyph'>-></span> <span class='conid'>XmlFilter</span>
<a name="line-253"></a>
<a name="line-254"></a><span class='definition'>substPEref'</span> <span class='varid'>loc</span> <span class='varid'>env</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'>PEREF</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span>
<a name="line-255"></a> <span class='keyglyph'>|</span> <span class='varid'>isInternalRef</span> <span class='keyglyph'>=</span> <span class='varid'>xerr</span> <span class='layout'>(</span><span class='str'>"a parameter entity reference of "</span> <span class='varop'>++</span> <span class='varid'>peName'</span> <span class='varop'>++</span> <span class='str'>" occurs in the internal subset of the DTD"</span><span class='layout'>)</span>
<a name="line-256"></a>
<a name="line-257"></a> <span class='keyglyph'>|</span> <span class='varid'>isUndefinedRef</span> <span class='keyglyph'>=</span> <span class='varid'>xerr</span> <span class='layout'>(</span><span class='str'>"parameter entity "</span> <span class='varop'>++</span> <span class='varid'>peName'</span> <span class='varop'>++</span> <span class='str'>" not found (forward reference?)"</span><span class='layout'>)</span>
<a name="line-258"></a>
<a name="line-259"></a> <span class='keyglyph'>|</span> <span class='varid'>null</span> <span class='varid'>baseUri</span> <span class='keyglyph'>=</span> <span class='keyglyph'>[</span><span class='varid'>setChildren</span> <span class='varid'>peContent</span> <span class='varid'>n</span><span class='keyglyph'>]</span>
<a name="line-260"></a>
<a name="line-261"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span> <span class='keyglyph'>=</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'>PEREF</span> <span class='layout'>(</span><span class='layout'>(</span><span class='varid'>a_url</span><span class='layout'>,</span><span class='varid'>baseUri</span><span class='layout'>)</span><span class='conop'>:</span><span class='varid'>al</span><span class='layout'>)</span><span class='layout'>)</span> <span class='varid'>peContent</span><span class='layout'>)</span><span class='keyglyph'>]</span>
<a name="line-262"></a> <span class='keyword'>where</span>
<a name="line-263"></a> <span class='varid'>peName</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_peref</span> <span class='varid'>al</span>
<a name="line-264"></a> <span class='varid'>peName'</span> <span class='keyglyph'>=</span> <span class='varid'>show</span> <span class='varid'>peName</span>
<a name="line-265"></a> <span class='varid'>peVal</span> <span class='keyglyph'>=</span> <span class='varid'>lookupPeEnv</span> <span class='varid'>peName</span> <span class='varid'>env</span>
<a name="line-266"></a> <span class='varid'>isInternalRef</span> <span class='keyglyph'>=</span> <span class='varid'>loc</span> <span class='varop'>==</span> <span class='conid'>Internal</span>
<a name="line-267"></a> <span class='varid'>isUndefinedRef</span> <span class='keyglyph'>=</span> <span class='varid'>isNothing</span> <span class='varid'>peVal</span>
<a name="line-268"></a>
<a name="line-269"></a> <span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='conid'>PENTITY</span> <span class='varid'>peAl</span><span class='layout'>)</span> <span class='varid'>peContent</span><span class='layout'>)</span> <span class='keyglyph'>=</span> <span class='varid'>fromJust</span> <span class='varid'>peVal</span>
<a name="line-270"></a> <span class='varid'>baseUri</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_url</span> <span class='varid'>peAl</span>
<a name="line-271"></a>
<a name="line-272"></a> <span class='comment'>-- peContent = getChildren $ fromJust peVal</span>
<a name="line-273"></a>
<a name="line-274"></a><span class='definition'>substPEref'</span> <span class='keyword'>_</span> <span class='keyword'>_</span> <span class='varid'>n</span>
<a name="line-275"></a> <span class='keyglyph'>=</span> <span class='keyglyph'>[</span><span class='varid'>n</span><span class='keyglyph'>]</span>
<a name="line-276"></a>
<a name="line-277"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-278"></a>
<a name="line-279"></a><span class='comment'>{-
<a name="line-280"></a>dumpPE :: DTDStateFilter
<a name="line-281"></a>dumpPE t
<a name="line-282"></a> = do
<a name="line-283"></a> env <- getState
<a name="line-284"></a> ( traceMsg 2 ("dumpPE: parameter entity environment\n" ++ M.foldWithKey showPE "" env)
<a name="line-285"></a> .>>
<a name="line-286"></a> thisM ) t
<a name="line-287"></a> where
<a name="line-288"></a> showPE k v b = k ++ "\t" ++ show v ++ "\n" ++ b
<a name="line-289"></a>-}</span>
<a name="line-290"></a>
<a name="line-291"></a><a name="traceDTD"></a><span class='definition'>traceDTD</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>XmlStateFilter</span> <span class='varid'>a</span>
<a name="line-292"></a><span class='definition'>traceDTD</span> <span class='varid'>msg</span> <span class='keyglyph'>=</span> <span class='varid'>traceMsg</span> <span class='num'>4</span> <span class='varid'>msg</span> <span class='varop'>.>></span> <span class='varid'>traceTree</span>
<a name="line-293"></a>
<a name="line-294"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-295"></a>
<a name="line-296"></a><a name="getExternalParamEntityValue"></a><span class='definition'>getExternalParamEntityValue</span> <span class='keyglyph'>::</span> <span class='conid'>DTDStateFilter</span>
<a name="line-297"></a><span class='definition'>getExternalParamEntityValue</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'>PENTITY</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='sel'>_cl</span><span class='layout'>)</span>
<a name="line-298"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-299"></a> <span class='varid'>rl</span> <span class='keyglyph'><-</span> <span class='layout'>(</span> <span class='varid'>getXmlEntityContents</span>
<a name="line-300"></a> <span class='varop'>.>></span>
<a name="line-301"></a> <span class='varid'>liftMf</span> <span class='varid'>getChildren</span>
<a name="line-302"></a> <span class='layout'>)</span>
<a name="line-303"></a> <span class='varop'>$</span> <span class='varid'>newDocument'</span> <span class='layout'>(</span><span class='layout'>(</span><span class='varid'>a_source</span><span class='layout'>,</span> <span class='varid'>sysVal</span><span class='layout'>)</span> <span class='conop'>:</span> <span class='varid'>al</span><span class='layout'>)</span>
<a name="line-304"></a> <span class='varid'>base</span> <span class='keyglyph'><-</span> <span class='varid'>getBaseURI</span>
<a name="line-305"></a> <span class='keyword'>if</span> <span class='varid'>null</span> <span class='varid'>rl</span>
<a name="line-306"></a> <span class='keyword'>then</span> <span class='varid'>issueErr</span> <span class='layout'>(</span><span class='str'>"illegal external parameter entity value for entity %"</span> <span class='varop'>++</span> <span class='varid'>peName</span> <span class='varop'>++</span><span class='str'>";"</span><span class='layout'>)</span> <span class='varid'>n</span>
<a name="line-307"></a> <span class='keyword'>else</span> <span class='varid'>thisM</span> <span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='conid'>PENTITY</span> <span class='layout'>(</span><span class='layout'>(</span><span class='varid'>a_url</span><span class='layout'>,</span> <span class='varid'>base</span><span class='layout'>)</span> <span class='conop'>:</span> <span class='varid'>al</span><span class='layout'>)</span><span class='layout'>)</span> <span class='varid'>rl</span><span class='layout'>)</span>
<a name="line-308"></a> <span class='keyword'>where</span>
<a name="line-309"></a> <span class='varid'>sysVal</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>k_system</span> <span class='varid'>al</span>
<a name="line-310"></a> <span class='varid'>peName</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_name</span> <span class='varid'>al</span>
<a name="line-311"></a>
<a name="line-312"></a><span class='definition'>getExternalParamEntityValue</span> <span class='varid'>n</span>
<a name="line-313"></a> <span class='keyglyph'>=</span> <span class='varid'>error</span> <span class='layout'>(</span><span class='str'>"getExternalParamEntityValue: illegal argument: "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>n</span><span class='layout'>)</span>
<a name="line-314"></a>
<a name="line-315"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-316"></a>
<a name="line-317"></a><span class='comment'>-- |</span>
<a name="line-318"></a><span class='comment'>-- the dtd parameter entity substitution filter</span>
<a name="line-319"></a>
<a name="line-320"></a><a name="substParamEntity"></a><span class='definition'>substParamEntity</span> <span class='keyglyph'>::</span> <span class='conid'>DTDPart</span> <span class='keyglyph'>-></span> <span class='conid'>DTDStateFilter</span>
<a name="line-321"></a>
<a name="line-322"></a><span class='definition'>substParamEntity</span> <span class='varid'>loc</span> <span class='varid'>n</span><span class='keyglyph'>@</span><span class='layout'>(</span><span class='conid'>NTree</span> <span class='varid'>xn</span> <span class='sel'>_cs</span><span class='layout'>)</span>
<a name="line-323"></a> <span class='keyglyph'>|</span> <span class='varid'>isDTDElemNode</span> <span class='conid'>ENTITY</span> <span class='varid'>xn</span> <span class='comment'>-- ENITITY and parameter ENTITY decl</span>
<a name="line-324"></a> <span class='keyglyph'>=</span> <span class='varid'>traceDTD</span> <span class='layout'>(</span><span class='str'>"ENTITY declaration before DTD declaration parsing"</span><span class='layout'>)</span>
<a name="line-325"></a> <span class='varop'>.>></span>
<a name="line-326"></a> <span class='varid'>processChildrenM</span> <span class='layout'>(</span><span class='varid'>substPeRefsInDTDdecl</span> <span class='conid'>[]</span><span class='layout'>)</span>
<a name="line-327"></a> <span class='varop'>.>></span>
<a name="line-328"></a> <span class='varid'>liftF</span> <span class='varid'>parseXmlDTDdecl</span>
<a name="line-329"></a> <span class='varop'>.>></span>
<a name="line-330"></a> <span class='varid'>substRefsInEntityValue</span>
<a name="line-331"></a> <span class='varop'>.>></span>
<a name="line-332"></a> <span class='varid'>processEntityDecl</span>
<a name="line-333"></a> <span class='varop'>.>></span>
<a name="line-334"></a> <span class='varid'>traceDTD</span> <span class='layout'>(</span><span class='str'>"ENTITY declaration after DTD declaration parsing"</span><span class='layout'>)</span>
<a name="line-335"></a> <span class='varop'>$</span> <span class='varid'>n</span>
<a name="line-336"></a>
<a name="line-337"></a> <span class='keyglyph'>|</span> <span class='varid'>isDTDElemNode</span> <span class='conid'>PEREF</span> <span class='varid'>xn</span> <span class='comment'>-- parameter entity ref in DTD</span>
<a name="line-338"></a> <span class='keyglyph'>=</span> <span class='varid'>substPeRefsInDTDpart</span> <span class='conid'>[]</span> <span class='varid'>n</span>
<a name="line-339"></a>
<a name="line-340"></a> <span class='keyglyph'>|</span> <span class='varid'>isDTDElemNode</span> <span class='conid'>ELEMENT</span> <span class='varid'>xn</span> <span class='comment'>-- ELEMENT, ATTLIST, NOTATION</span>
<a name="line-341"></a> <span class='varop'>||</span>
<a name="line-342"></a> <span class='varid'>isDTDElemNode</span> <span class='conid'>ATTLIST</span> <span class='varid'>xn</span>
<a name="line-343"></a> <span class='varop'>||</span>
<a name="line-344"></a> <span class='varid'>isDTDElemNode</span> <span class='conid'>NOTATION</span> <span class='varid'>xn</span>
<a name="line-345"></a> <span class='keyglyph'>=</span> <span class='varid'>traceDTD</span> <span class='str'>"DTD declaration before PE substitution"</span>
<a name="line-346"></a> <span class='varop'>.>></span>
<a name="line-347"></a> <span class='varid'>processChildrenM</span> <span class='layout'>(</span><span class='varid'>substPeRefsInDTDdecl</span> <span class='conid'>[]</span><span class='layout'>)</span>
<a name="line-348"></a> <span class='varop'>.>></span>
<a name="line-349"></a> <span class='varid'>liftF</span> <span class='varid'>parseXmlDTDdecl</span>
<a name="line-350"></a> <span class='varop'>.>></span>
<a name="line-351"></a> <span class='varid'>traceDTD</span> <span class='str'>"DTD declaration after DTD declaration parsing"</span>
<a name="line-352"></a> <span class='varop'>$</span> <span class='varid'>n</span>
<a name="line-353"></a>
<a name="line-354"></a> <span class='keyglyph'>|</span> <span class='varid'>isDTDElemNode</span> <span class='conid'>CONDSECT</span> <span class='varid'>xn</span> <span class='comment'>-- conditional section</span>
<a name="line-355"></a> <span class='varop'>&&</span>
<a name="line-356"></a> <span class='varid'>loc</span> <span class='varop'>==</span> <span class='conid'>Internal</span>
<a name="line-357"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-358"></a> <span class='varid'>issueErr</span> <span class='str'>"conditional sections in internal part of the DTD is not allowed"</span> <span class='varid'>n</span>
<a name="line-359"></a> <span class='varid'>return</span> <span class='conid'>[]</span>
<a name="line-360"></a>
<a name="line-361"></a> <span class='keyglyph'>|</span> <span class='varid'>isDTDElemNode</span> <span class='conid'>CONDSECT</span> <span class='varid'>xn</span> <span class='comment'>-- conditional section</span>
<a name="line-362"></a> <span class='varop'>&&</span>
<a name="line-363"></a> <span class='varid'>loc</span> <span class='varop'>==</span> <span class='conid'>External</span>
<a name="line-364"></a> <span class='keyglyph'>=</span> <span class='keyword'>let</span>
<a name="line-365"></a> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='keyword'>_</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='keyglyph'>=</span> <span class='varid'>xn</span>
<a name="line-366"></a> <span class='varid'>content</span> <span class='keyglyph'>=</span> <span class='varid'>mkXTextTree</span> <span class='layout'>(</span><span class='varid'>lookup1</span> <span class='varid'>a_value</span> <span class='varid'>al</span><span class='layout'>)</span>
<a name="line-367"></a> <span class='keyword'>in</span>
<a name="line-368"></a> <span class='varid'>traceDTD</span> <span class='str'>"substParamEntity: process conditional section"</span>
<a name="line-369"></a> <span class='varop'>.>></span>
<a name="line-370"></a> <span class='varid'>processChildrenM</span> <span class='layout'>(</span><span class='varid'>substPeRefsInCondSect</span> <span class='conid'>[]</span><span class='layout'>)</span>
<a name="line-371"></a> <span class='varop'>.>></span>
<a name="line-372"></a> <span class='varid'>liftF</span> <span class='varid'>parseXmlDTDdecl</span>
<a name="line-373"></a> <span class='varop'>.>></span>
<a name="line-374"></a> <span class='varid'>evalCond</span> <span class='varid'>content</span>
<a name="line-375"></a> <span class='varop'>$</span> <span class='varid'>n</span>
<a name="line-376"></a>
<a name="line-377"></a> <span class='keyglyph'>|</span> <span class='varid'>isXCmtNode</span> <span class='varid'>xn</span> <span class='comment'>-- remove comments</span>
<a name="line-378"></a> <span class='keyglyph'>=</span> <span class='varid'>noneM</span> <span class='varid'>n</span>
<a name="line-379"></a>
<a name="line-380"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span> <span class='comment'>-- default: keep things unchanged (should not occur)</span>
<a name="line-381"></a> <span class='keyglyph'>=</span> <span class='varid'>thisM</span> <span class='varid'>n</span>
<a name="line-382"></a> <span class='keyword'>where</span>
<a name="line-383"></a>
<a name="line-384"></a> <span class='varid'>processEntityDecl</span> <span class='keyglyph'>::</span> <span class='conid'>DTDStateFilter</span>
<a name="line-385"></a> <span class='varid'>processEntityDecl</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'>ENTITY</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varid'>cs</span><span class='layout'>)</span> <span class='keyglyph'>=</span> <span class='keyword'>if</span> <span class='varid'>isExtern</span>
<a name="line-386"></a> <span class='keyword'>then</span> <span class='layout'>(</span> <span class='keyword'>do</span>
<a name="line-387"></a> <span class='varid'>url</span> <span class='keyglyph'><-</span> <span class='varid'>getAbsolutURI</span> <span class='varid'>sysVal</span> <span class='comment'>-- add the absolute URI</span>
<a name="line-388"></a> <span class='varid'>return</span> <span class='keyglyph'>[</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='conid'>ENTITY</span> <span class='layout'>(</span><span class='layout'>(</span><span class='varid'>a_url</span><span class='layout'>,</span> <span class='varid'>url</span><span class='layout'>)</span> <span class='conop'>:</span> <span class='varid'>al</span><span class='layout'>)</span><span class='layout'>)</span> <span class='varid'>cs</span><span class='keyglyph'>]</span>
<a name="line-389"></a> <span class='layout'>)</span>
<a name="line-390"></a> <span class='keyword'>else</span> <span class='varid'>liftMf</span> <span class='layout'>(</span><span class='varid'>substChildren</span> <span class='layout'>(</span><span class='varid'>xmlTreesToText</span> <span class='varop'>.</span> <span class='varid'>getChildren</span><span class='layout'>)</span><span class='layout'>)</span> <span class='varid'>n'</span>
<a name="line-391"></a> <span class='keyword'>where</span>
<a name="line-392"></a> <span class='varid'>isExtern</span> <span class='keyglyph'>=</span> <span class='varid'>hasEntry</span> <span class='varid'>k_system</span> <span class='varid'>al</span>
<a name="line-393"></a> <span class='varid'>sysVal</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>k_system</span> <span class='varid'>al</span>
<a name="line-394"></a>
<a name="line-395"></a> <span class='varid'>processEntityDecl</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'>PENTITY</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span>
<a name="line-396"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-397"></a> <span class='varid'>env</span> <span class='keyglyph'><-</span> <span class='varid'>getState</span>
<a name="line-398"></a> <span class='keyword'>if</span> <span class='layout'>(</span><span class='varid'>isJust</span> <span class='varop'>.</span> <span class='varid'>lookupPeEnv</span> <span class='varid'>peName</span><span class='layout'>)</span> <span class='varop'>$</span> <span class='varid'>env</span>
<a name="line-399"></a> <span class='keyword'>then</span>
<a name="line-400"></a> <span class='varid'>issueWarn</span> <span class='layout'>(</span><span class='str'>"parameter entity "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>peName</span> <span class='varop'>++</span> <span class='str'>" already defined"</span><span class='layout'>)</span> <span class='varid'>n</span>
<a name="line-401"></a> <span class='keyword'>else</span>
<a name="line-402"></a> <span class='layout'>(</span> <span class='varid'>ifM</span> <span class='varid'>isExternalParameterEntity</span>
<a name="line-403"></a> <span class='layout'>(</span> <span class='varid'>runInLocalURIContext</span> <span class='varid'>getExternalParamEntityValue</span> <span class='layout'>)</span>
<a name="line-404"></a> <span class='layout'>(</span> <span class='varid'>liftMf</span> <span class='layout'>(</span><span class='varid'>substChildren</span> <span class='layout'>(</span><span class='varid'>xmlTreesToText</span> <span class='varop'>.</span> <span class='varid'>getChildren</span><span class='layout'>)</span><span class='layout'>)</span> <span class='layout'>)</span>
<a name="line-405"></a> <span class='varop'>.>></span>
<a name="line-406"></a> <span class='varid'>addPE</span> <span class='varid'>peName</span>
<a name="line-407"></a> <span class='layout'>)</span> <span class='varid'>n'</span>
<a name="line-408"></a> <span class='keyword'>where</span>
<a name="line-409"></a> <span class='varid'>peName</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_name</span> <span class='varid'>al</span>
<a name="line-410"></a>
<a name="line-411"></a> <span class='varid'>processEntityDecl</span> <span class='varid'>n'</span>
<a name="line-412"></a> <span class='keyglyph'>=</span> <span class='varid'>error</span> <span class='layout'>(</span><span class='str'>"processEntityDecl called with wrong argument"</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>n'</span><span class='layout'>)</span>
<a name="line-413"></a>
<a name="line-414"></a> <span class='varid'>addPE</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>DTDStateFilter</span>
<a name="line-415"></a> <span class='varid'>addPE</span> <span class='varid'>name</span> <span class='varid'>t</span>
<a name="line-416"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-417"></a> <span class='varid'>trace</span> <span class='num'>2</span> <span class='layout'>(</span><span class='str'>"substParamEntity: add entity to env: "</span> <span class='varop'>++</span> <span class='varid'>xshow</span> <span class='keyglyph'>[</span><span class='varid'>t</span><span class='keyglyph'>]</span><span class='layout'>)</span>
<a name="line-418"></a> <span class='varid'>changeState</span> <span class='varop'>$</span> <span class='varid'>addPeEntry</span> <span class='varid'>name</span> <span class='varid'>t</span>
<a name="line-419"></a> <span class='varid'>return</span> <span class='conid'>[]</span>
<a name="line-420"></a>
<a name="line-421"></a> <span class='varid'>substPEref</span> <span class='keyglyph'>::</span> <span class='conid'>DTDStateFilter</span>
<a name="line-422"></a> <span class='varid'>substPEref</span> <span class='varid'>n'</span>
<a name="line-423"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-424"></a> <span class='varid'>env</span> <span class='keyglyph'><-</span> <span class='varid'>getState</span>
<a name="line-425"></a> <span class='varid'>liftF</span> <span class='layout'>(</span><span class='varid'>substPEref'</span> <span class='varid'>loc</span> <span class='varid'>env</span><span class='layout'>)</span> <span class='varop'>$</span> <span class='varid'>n'</span>
<a name="line-426"></a>
<a name="line-427"></a> <span class='varid'>substPeRefsInValue</span> <span class='keyglyph'>::</span> <span class='keyglyph'>[</span><span class='conid'>String</span><span class='keyglyph'>]</span> <span class='keyglyph'>-></span> <span class='conid'>DTDStateFilter</span>
<a name="line-428"></a> <span class='varid'>substPeRefsInValue</span> <span class='varid'>recList</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'>PEREF</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='sel'>_cl</span><span class='layout'>)</span>
<a name="line-429"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='keyword'>if</span> <span class='varid'>peName</span> <span class='varop'>`elem`</span> <span class='varid'>recList</span>
<a name="line-430"></a> <span class='keyword'>then</span> <span class='varid'>issueErr</span> <span class='layout'>(</span><span class='str'>"recursive call of parameter entity "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>peName</span> <span class='varop'>++</span> <span class='str'>" in entity value"</span><span class='layout'>)</span>
<a name="line-431"></a> <span class='keyword'>else</span> <span class='layout'>(</span> <span class='varid'>substPEref</span>
<a name="line-432"></a> <span class='varop'>.>></span>
<a name="line-433"></a> <span class='varid'>liftF</span> <span class='varid'>parseXmlDTDEntityValue</span>
<a name="line-434"></a> <span class='varop'>.>></span>
<a name="line-435"></a> <span class='varid'>liftF</span> <span class='varid'>transfCharRef</span>
<a name="line-436"></a> <span class='varop'>.>></span>
<a name="line-437"></a> <span class='layout'>(</span> <span class='varid'>substPeRefsInValue</span> <span class='layout'>(</span><span class='varid'>peName</span> <span class='conop'>:</span> <span class='varid'>recList</span><span class='layout'>)</span>
<a name="line-438"></a> <span class='varop'>`whenM`</span>
<a name="line-439"></a> <span class='varid'>isPeRef</span>
<a name="line-440"></a> <span class='layout'>)</span>
<a name="line-441"></a> <span class='layout'>)</span>
<a name="line-442"></a> <span class='layout'>)</span> <span class='varop'>$</span> <span class='varid'>n'</span>
<a name="line-443"></a> <span class='keyword'>where</span>
<a name="line-444"></a> <span class='varid'>peName</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_peref</span> <span class='varid'>al</span>
<a name="line-445"></a>
<a name="line-446"></a> <span class='varid'>substPeRefsInValue</span> <span class='keyword'>_</span> <span class='varid'>n'</span>
<a name="line-447"></a> <span class='keyglyph'>=</span> <span class='varid'>thisM</span> <span class='varid'>n'</span>
<a name="line-448"></a>
<a name="line-449"></a> <span class='varid'>substRefsInEntityValue</span> <span class='keyglyph'>::</span> <span class='conid'>DTDStateFilter</span>
<a name="line-450"></a> <span class='varid'>substRefsInEntityValue</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='varid'>decl</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='sel'>_cl</span><span class='layout'>)</span>
<a name="line-451"></a> <span class='keyglyph'>|</span> <span class='varid'>decl</span> <span class='varop'>`elem`</span> <span class='keyglyph'>[</span><span class='conid'>ENTITY</span><span class='layout'>,</span> <span class='conid'>PENTITY</span><span class='keyglyph'>]</span>
<a name="line-452"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='keyword'>if</span> <span class='varid'>hasEntry</span> <span class='varid'>k_system</span> <span class='varid'>al</span>
<a name="line-453"></a> <span class='keyword'>then</span> <span class='varid'>thisM</span> <span class='comment'>-- externals not yet handled ??? really</span>
<a name="line-454"></a> <span class='keyword'>else</span> <span class='varid'>processChildrenM</span> <span class='layout'>(</span> <span class='varid'>liftF</span> <span class='varid'>transfCharRef</span>
<a name="line-455"></a> <span class='varop'>.>></span>
<a name="line-456"></a> <span class='varid'>substPeRefsInValue</span> <span class='conid'>[]</span>
<a name="line-457"></a> <span class='layout'>)</span>
<a name="line-458"></a> <span class='layout'>)</span> <span class='varid'>n'</span>
<a name="line-459"></a> <span class='varid'>substRefsInEntityValue</span> <span class='varid'>n'</span>
<a name="line-460"></a> <span class='keyglyph'>=</span> <span class='varid'>error</span> <span class='layout'>(</span><span class='str'>"substRefsInEntityValue called with wrong argument"</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>n'</span><span class='layout'>)</span>
<a name="line-461"></a>
<a name="line-462"></a> <span class='varid'>runInPeContext</span> <span class='keyglyph'>::</span> <span class='conid'>DTDStateFilter</span> <span class='keyglyph'>-></span> <span class='conid'>DTDStateFilter</span>
<a name="line-463"></a> <span class='varid'>runInPeContext</span> <span class='varid'>f</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'>PEREF</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span>
<a name="line-464"></a> <span class='keyglyph'>|</span> <span class='varid'>null</span> <span class='varid'>base</span>
<a name="line-465"></a> <span class='keyglyph'>=</span> <span class='varid'>f</span> <span class='varid'>n'</span>
<a name="line-466"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span>
<a name="line-467"></a> <span class='keyglyph'>=</span> <span class='varid'>runInNewURIContext</span> <span class='varid'>base</span> <span class='varid'>f</span> <span class='varid'>n'</span>
<a name="line-468"></a> <span class='keyword'>where</span>
<a name="line-469"></a> <span class='varid'>base</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_url</span> <span class='varid'>al</span>
<a name="line-470"></a>
<a name="line-471"></a> <span class='varid'>runInPeContext</span> <span class='varid'>f</span> <span class='varid'>n'</span>
<a name="line-472"></a> <span class='keyglyph'>=</span> <span class='varid'>f</span> <span class='varid'>n'</span>
<a name="line-473"></a>
<a name="line-474"></a> <span class='varid'>substPeRefsInDTDdecl</span> <span class='keyglyph'>::</span> <span class='keyglyph'>[</span><span class='conid'>String</span><span class='keyglyph'>]</span> <span class='keyglyph'>-></span> <span class='conid'>DTDStateFilter</span>
<a name="line-475"></a> <span class='varid'>substPeRefsInDTDdecl</span> <span class='varid'>recList</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'>PEREF</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='sel'>_cl</span><span class='layout'>)</span>
<a name="line-476"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='keyword'>if</span> <span class='varid'>peName</span> <span class='varop'>`elem`</span> <span class='varid'>recList</span>
<a name="line-477"></a> <span class='keyword'>then</span> <span class='varid'>issueErr</span> <span class='layout'>(</span><span class='str'>"recursive call of parameter entity "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>peName</span> <span class='varop'>++</span> <span class='str'>" in DTD declaration"</span><span class='layout'>)</span>
<a name="line-478"></a> <span class='keyword'>else</span> <span class='layout'>(</span> <span class='varid'>substPEref</span>
<a name="line-479"></a> <span class='varop'>.>></span>
<a name="line-480"></a> <span class='varid'>traceDTD</span> <span class='str'>"substPeRefsInDTDdecl: parseXmlDTDdeclPart"</span>
<a name="line-481"></a> <span class='varop'>.>></span>
<a name="line-482"></a> <span class='layout'>(</span> <span class='varid'>runInPeContext</span>
<a name="line-483"></a> <span class='layout'>(</span> <span class='varid'>liftF</span> <span class='layout'>(</span> <span class='varid'>parseXmlDTDdeclPart</span> <span class='layout'>)</span>
<a name="line-484"></a> <span class='varop'>.>></span>
<a name="line-485"></a> <span class='varid'>traceDTD</span> <span class='str'>"substPeRefsInDTDdecl: after parseXmlDTDdeclPart"</span>
<a name="line-486"></a> <span class='varop'>.>></span>
<a name="line-487"></a> <span class='varid'>processChildrenM</span> <span class='layout'>(</span> <span class='varid'>substPeRefsInDTDdecl</span> <span class='layout'>(</span><span class='varid'>peName</span> <span class='conop'>:</span> <span class='varid'>recList</span><span class='layout'>)</span> <span class='layout'>)</span>
<a name="line-488"></a> <span class='layout'>)</span>
<a name="line-489"></a> <span class='varop'>`whenM`</span>
<a name="line-490"></a> <span class='varid'>isPeRef</span>
<a name="line-491"></a> <span class='layout'>)</span>
<a name="line-492"></a> <span class='layout'>)</span>
<a name="line-493"></a> <span class='layout'>)</span> <span class='varop'>$</span> <span class='varid'>n'</span>
<a name="line-494"></a> <span class='keyword'>where</span>
<a name="line-495"></a> <span class='varid'>peName</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_peref</span> <span class='varid'>al</span>
<a name="line-496"></a>
<a name="line-497"></a> <span class='varid'>substPeRefsInDTDdecl</span> <span class='keyword'>_</span> <span class='varid'>n'</span>
<a name="line-498"></a> <span class='keyglyph'>=</span> <span class='varid'>thisM</span> <span class='varid'>n'</span>
<a name="line-499"></a>
<a name="line-500"></a> <span class='varid'>substPeRefsInDTDpart</span> <span class='keyglyph'>::</span> <span class='keyglyph'>[</span><span class='conid'>String</span><span class='keyglyph'>]</span> <span class='keyglyph'>-></span> <span class='conid'>DTDStateFilter</span>
<a name="line-501"></a> <span class='varid'>substPeRefsInDTDpart</span> <span class='varid'>recList</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'>PEREF</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='sel'>_cl</span><span class='layout'>)</span>
<a name="line-502"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='keyword'>if</span> <span class='varid'>peName</span> <span class='varop'>`elem`</span> <span class='varid'>recList</span>
<a name="line-503"></a> <span class='keyword'>then</span> <span class='varid'>issueErr</span> <span class='layout'>(</span><span class='str'>"recursive call of parameter entity "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>peName</span> <span class='varop'>++</span> <span class='str'>" in DTD part"</span><span class='layout'>)</span>
<a name="line-504"></a> <span class='keyword'>else</span> <span class='layout'>(</span> <span class='varid'>substPEref</span>
<a name="line-505"></a> <span class='varop'>.>></span>
<a name="line-506"></a> <span class='varid'>traceDTD</span> <span class='str'>"substPeRefsInDTDpart: parseXmlDTDPart"</span>
<a name="line-507"></a> <span class='varop'>.>></span>
<a name="line-508"></a> <span class='varid'>runInPeContext</span>
<a name="line-509"></a> <span class='layout'>(</span> <span class='varid'>liftF</span> <span class='layout'>(</span><span class='varid'>getChildren</span> <span class='varop'>.></span> <span class='varid'>parseXmlDTDPart</span> <span class='layout'>(</span><span class='str'>"parameter entity "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>peName</span><span class='layout'>)</span><span class='layout'>)</span>
<a name="line-510"></a> <span class='varop'>.>></span>
<a name="line-511"></a> <span class='varid'>traceDTD</span> <span class='str'>"substPeRefsInDTDdecl: after parseXmlDTDPart"</span>
<a name="line-512"></a> <span class='varop'>.>></span>
<a name="line-513"></a> <span class='varid'>substParamEntity</span> <span class='varid'>loc</span> <span class='comment'>-- cyclic check not yet done (peName : recList)</span>
<a name="line-514"></a> <span class='layout'>)</span>
<a name="line-515"></a> <span class='layout'>)</span>
<a name="line-516"></a> <span class='layout'>)</span> <span class='varop'>$</span> <span class='varid'>n'</span>
<a name="line-517"></a> <span class='keyword'>where</span>
<a name="line-518"></a> <span class='varid'>peName</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_peref</span> <span class='varid'>al</span>
<a name="line-519"></a>
<a name="line-520"></a> <span class='varid'>substPeRefsInDTDpart</span> <span class='keyword'>_</span> <span class='varid'>n'</span>
<a name="line-521"></a> <span class='keyglyph'>=</span> <span class='varid'>thisM</span> <span class='varid'>n'</span>
<a name="line-522"></a>
<a name="line-523"></a> <span class='varid'>substPeRefsInCondSect</span> <span class='keyglyph'>::</span> <span class='keyglyph'>[</span><span class='conid'>String</span><span class='keyglyph'>]</span> <span class='keyglyph'>-></span> <span class='conid'>DTDStateFilter</span>
<a name="line-524"></a> <span class='varid'>substPeRefsInCondSect</span> <span class='varid'>recList</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'>PEREF</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='sel'>_cl</span><span class='layout'>)</span>
<a name="line-525"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='keyword'>if</span> <span class='varid'>peName</span> <span class='varop'>`elem`</span> <span class='varid'>recList</span>
<a name="line-526"></a> <span class='keyword'>then</span> <span class='varid'>issueErr</span> <span class='layout'>(</span><span class='str'>"recursive call of parameter entity "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>peName</span> <span class='varop'>++</span> <span class='str'>" in conditional section"</span><span class='layout'>)</span>
<a name="line-527"></a> <span class='keyword'>else</span> <span class='layout'>(</span> <span class='varid'>substPEref</span>
<a name="line-528"></a> <span class='varop'>.>></span>
<a name="line-529"></a> <span class='varid'>traceDTD</span> <span class='str'>"substPeRefsInCondSect: parseXmlDTDdeclPart"</span>
<a name="line-530"></a> <span class='varop'>.>></span>
<a name="line-531"></a> <span class='layout'>(</span> <span class='varid'>runInPeContext</span>
<a name="line-532"></a> <span class='layout'>(</span> <span class='varid'>liftF</span> <span class='layout'>(</span> <span class='varid'>parseXmlDTDdeclPart</span> <span class='layout'>)</span>
<a name="line-533"></a> <span class='varop'>.>></span>
<a name="line-534"></a> <span class='varid'>traceDTD</span> <span class='str'>"substPeRefsInCondSect: after parseXmlDTDdeclPart"</span>
<a name="line-535"></a> <span class='varop'>.>></span>
<a name="line-536"></a> <span class='varid'>processChildrenM</span> <span class='layout'>(</span> <span class='varid'>substPeRefsInCondSect</span> <span class='layout'>(</span><span class='varid'>peName</span> <span class='conop'>:</span> <span class='varid'>recList</span><span class='layout'>)</span> <span class='layout'>)</span>
<a name="line-537"></a> <span class='layout'>)</span>
<a name="line-538"></a> <span class='varop'>`whenM`</span>
<a name="line-539"></a> <span class='varid'>isPeRef</span>
<a name="line-540"></a> <span class='layout'>)</span>
<a name="line-541"></a> <span class='layout'>)</span>
<a name="line-542"></a> <span class='layout'>)</span> <span class='varop'>$</span> <span class='varid'>n'</span>
<a name="line-543"></a> <span class='keyword'>where</span>
<a name="line-544"></a> <span class='varid'>peName</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_peref</span> <span class='varid'>al</span>
<a name="line-545"></a>
<a name="line-546"></a> <span class='varid'>substPeRefsInCondSect</span> <span class='keyword'>_</span> <span class='varid'>n'</span>
<a name="line-547"></a> <span class='keyglyph'>=</span> <span class='varid'>thisM</span> <span class='varid'>n'</span>
<a name="line-548"></a>
<a name="line-549"></a>
<a name="line-550"></a><a name="evalCond"></a><span class='definition'>evalCond</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>DTDStateFilter</span>
<a name="line-551"></a><span class='definition'>evalCond</span> <span class='varid'>content</span> <span class='layout'>(</span><span class='conid'>NTree</span> <span class='varid'>n</span> <span class='keyword'>_</span><span class='layout'>)</span>
<a name="line-552"></a> <span class='keyglyph'>|</span> <span class='varid'>c</span> <span class='varop'>==</span> <span class='varid'>k_include</span>
<a name="line-553"></a> <span class='keyglyph'>=</span> <span class='varid'>liftF</span> <span class='layout'>(</span><span class='varid'>parseXmlDTDPart</span> <span class='str'>"conditional section"</span><span class='layout'>)</span>
<a name="line-554"></a> <span class='varop'>.>></span>
<a name="line-555"></a> <span class='varid'>traceDTD</span> <span class='str'>"evalCond: DTD part"</span>
<a name="line-556"></a> <span class='varop'>.>></span>
<a name="line-557"></a> <span class='varid'>substParamEntity</span> <span class='conid'>External</span>
<a name="line-558"></a> <span class='varop'>$</span> <span class='varid'>content</span>
<a name="line-559"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span>
<a name="line-560"></a> <span class='keyglyph'>=</span> <span class='varid'>return</span> <span class='conid'>[]</span>
<a name="line-561"></a> <span class='keyword'>where</span>
<a name="line-562"></a> <span class='varid'>c</span> <span class='keyglyph'>=</span> <span class='varid'>textOfXNode</span> <span class='varid'>n</span>
<a name="line-563"></a>
<a name="line-564"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-565"></a>
<a name="line-566"></a><a name="processExternalDTD"></a><span class='definition'>processExternalDTD</span> <span class='keyglyph'>::</span> <span class='conid'>XmlStateFilter</span> <span class='varid'>a</span>
<a name="line-567"></a><span class='definition'>processExternalDTD</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'>DOCTYPE</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='sel'>_dtd</span><span class='layout'>)</span>
<a name="line-568"></a> <span class='keyglyph'>|</span> <span class='varid'>null</span> <span class='varid'>sysVal</span>
<a name="line-569"></a> <span class='keyglyph'>=</span> <span class='varid'>return</span> <span class='conid'>[]</span>
<a name="line-570"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span>
<a name="line-571"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-572"></a> <span class='varid'>checkStandalone</span>
<a name="line-573"></a> <span class='varid'>dtdContent</span> <span class='keyglyph'><-</span> <span class='layout'>(</span> <span class='varid'>getXmlEntityContents</span>
<a name="line-574"></a> <span class='varop'>.>></span>
<a name="line-575"></a> <span class='varid'>traceMsg</span> <span class='num'>2</span> <span class='layout'>(</span><span class='str'>"processExternalDTD: parsing DTD part for "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>sysVal</span><span class='layout'>)</span>
<a name="line-576"></a> <span class='varop'>.>></span>
<a name="line-577"></a> <span class='varid'>liftMf</span> <span class='varid'>getChildren</span>
<a name="line-578"></a> <span class='varop'>.>></span>
<a name="line-579"></a> <span class='varid'>liftF</span> <span class='layout'>(</span><span class='varid'>parseXmlDTDPart</span> <span class='varid'>sysVal</span><span class='layout'>)</span>
<a name="line-580"></a> <span class='layout'>)</span>
<a name="line-581"></a> <span class='varop'>$</span> <span class='varid'>newDocument</span> <span class='varid'>sysVal</span>
<a name="line-582"></a> <span class='varid'>trace</span> <span class='num'>2</span> <span class='str'>"processExternalDTD: parsing DTD part done"</span>
<a name="line-583"></a> <span class='varid'>traceTree</span> <span class='varop'>$</span> <span class='varid'>mkRootTree</span> <span class='conid'>[]</span> <span class='varid'>dtdContent</span>
<a name="line-584"></a> <span class='varid'>return</span> <span class='varid'>dtdContent</span>
<a name="line-585"></a> <span class='keyword'>where</span>
<a name="line-586"></a> <span class='varid'>sysVal</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>k_system</span> <span class='varid'>al</span>
<a name="line-587"></a> <span class='varid'>checkStandalone</span> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-588"></a> <span class='sel'>_isAlone</span> <span class='keyglyph'><-</span> <span class='varid'>isStandaloneDocument</span>
<a name="line-589"></a> <span class='keyword'>if</span> <span class='conid'>False</span> <span class='comment'>-- isAlone</span>
<a name="line-590"></a> <span class='keyword'>then</span> <span class='varid'>issueErr</span> <span class='layout'>(</span><span class='str'>"external DTD "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>sysVal</span> <span class='varop'>++</span> <span class='str'>" specified for standalone document"</span><span class='layout'>)</span> <span class='varid'>n</span>
<a name="line-591"></a> <span class='keyword'>else</span> <span class='varid'>return</span> <span class='conid'>[]</span>
<a name="line-592"></a>
<a name="line-593"></a><span class='definition'>processExternalDTD</span> <span class='keyword'>_</span>
<a name="line-594"></a> <span class='keyglyph'>=</span> <span class='varid'>return</span> <span class='conid'>[]</span>
<a name="line-595"></a>
<a name="line-596"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-597"></a><span class='comment'>-- |</span>
<a name="line-598"></a><span class='comment'>-- merge the external and the internal part of a DTD into one internal part.</span>
<a name="line-599"></a><span class='comment'>-- parameter entity substitution should be made before applying this filter</span>
<a name="line-600"></a><span class='comment'>-- internal definitions shadow external ones</span>
<a name="line-601"></a><span class='comment'>--</span>
<a name="line-602"></a><span class='comment'>--</span>
<a name="line-603"></a><span class='comment'>-- preliminary: no real merge is done</span>
<a name="line-604"></a>
<a name="line-605"></a><a name="mergeDTDs"></a><span class='definition'>mergeDTDs</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTrees</span>
<a name="line-606"></a><span class='definition'>mergeDTDs</span> <span class='varid'>dtdInt</span> <span class='varid'>dtdExt</span>
<a name="line-607"></a> <span class='keyglyph'>=</span> <span class='varid'>dtdInt</span> <span class='varop'>++</span> <span class='layout'>(</span><span class='varid'>mergeDTDentry</span> <span class='varid'>dtdInt</span> <span class='varop'>$$</span> <span class='varid'>dtdExt</span><span class='layout'>)</span>
<a name="line-608"></a>
<a name="line-609"></a><a name="mergeDTDentry"></a><span class='definition'>mergeDTDentry</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>XmlFilter</span>
<a name="line-610"></a><span class='definition'>mergeDTDentry</span> <span class='varid'>dtdPart</span>
<a name="line-611"></a> <span class='keyglyph'>=</span> <span class='varid'>none</span> <span class='varop'>`when`</span> <span class='varid'>found</span>
<a name="line-612"></a> <span class='keyword'>where</span>
<a name="line-613"></a> <span class='varid'>filterList</span> <span class='keyglyph'>=</span> <span class='varid'>map</span> <span class='varid'>filterDTDNode</span> <span class='varid'>dtdPart</span> <span class='comment'>-- construct the list of filters</span>
<a name="line-614"></a> <span class='varid'>found</span> <span class='keyglyph'>=</span> <span class='varid'>cat</span> <span class='varid'>filterList</span> <span class='comment'>-- concatenate the filters (set union)</span>
<a name="line-615"></a>
<a name="line-616"></a>
<a name="line-617"></a><a name="filterDTDNode"></a><span class='definition'>filterDTDNode</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>XmlFilter</span>
<a name="line-618"></a>
<a name="line-619"></a><span class='definition'>filterDTDNode</span> <span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XDTD</span> <span class='varid'>dtdElem</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span>
<a name="line-620"></a> <span class='keyglyph'>|</span> <span class='varid'>dtdElem</span> <span class='varop'>`elem`</span> <span class='keyglyph'>[</span><span class='conid'>ELEMENT</span><span class='layout'>,</span> <span class='conid'>NOTATION</span><span class='layout'>,</span> <span class='conid'>ENTITY</span><span class='keyglyph'>]</span>
<a name="line-621"></a> <span class='keyglyph'>=</span> <span class='varid'>filterElement</span>
<a name="line-622"></a> <span class='keyword'>where</span>
<a name="line-623"></a> <span class='varid'>filterElement</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='varid'>dtdElem'</span> <span class='varid'>al'</span><span class='layout'>)</span> <span class='sel'>_cl'</span><span class='layout'>)</span>
<a name="line-624"></a> <span class='keyglyph'>|</span> <span class='varid'>dtdElem</span> <span class='varop'>==</span> <span class='varid'>dtdElem'</span> <span class='varop'>&&</span>
<a name="line-625"></a> <span class='varid'>lookup</span> <span class='varid'>a_name</span> <span class='varid'>al'</span> <span class='varop'>==</span> <span class='varid'>lookup</span> <span class='varid'>a_name</span> <span class='varid'>al</span>
<a name="line-626"></a> <span class='keyglyph'>=</span> <span class='keyglyph'>[</span><span class='varid'>n</span><span class='keyglyph'>]</span>
<a name="line-627"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span>
<a name="line-628"></a> <span class='keyglyph'>=</span> <span class='conid'>[]</span>
<a name="line-629"></a> <span class='varid'>filterElement</span> <span class='keyword'>_</span>
<a name="line-630"></a> <span class='keyglyph'>=</span> <span class='conid'>[]</span>
<a name="line-631"></a>
<a name="line-632"></a><span class='definition'>filterDTDNode</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-633"></a> <span class='keyglyph'>=</span> <span class='varid'>filterAttlist</span>
<a name="line-634"></a> <span class='keyword'>where</span>
<a name="line-635"></a> <span class='varid'>filterAttlist</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='sel'>_cl'</span><span class='layout'>)</span>
<a name="line-636"></a> <span class='keyglyph'>|</span> <span class='varid'>lookup</span> <span class='varid'>a_name</span> <span class='varid'>al'</span> <span class='varop'>==</span> <span class='varid'>lookup</span> <span class='varid'>a_name</span> <span class='varid'>al</span> <span class='varop'>&&</span>
<a name="line-637"></a> <span class='varid'>lookup</span> <span class='varid'>a_value</span> <span class='varid'>al'</span> <span class='varop'>==</span> <span class='varid'>lookup</span> <span class='varid'>a_value</span> <span class='varid'>al</span>
<a name="line-638"></a> <span class='keyglyph'>=</span> <span class='keyglyph'>[</span><span class='varid'>n</span><span class='keyglyph'>]</span>
<a name="line-639"></a> <span class='varid'>filterAttlist</span> <span class='keyword'>_</span>
<a name="line-640"></a> <span class='keyglyph'>=</span> <span class='conid'>[]</span>
<a name="line-641"></a>
<a name="line-642"></a><span class='definition'>filterDTDNode</span> <span class='keyword'>_</span>
<a name="line-643"></a> <span class='keyglyph'>=</span> <span class='varid'>none</span>
<a name="line-644"></a>
<a name="line-645"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-646"></a>
<a name="line-647"></a><a name="predefinedEntities"></a><span class='definition'>predefinedEntities</span> <span class='keyglyph'>::</span> <span class='conid'>String</span>
<a name="line-648"></a><span class='definition'>predefinedEntities</span>
<a name="line-649"></a> <span class='keyglyph'>=</span> <span class='varid'>concat</span> <span class='keyglyph'>[</span> <span class='str'>"<!ENTITY lt '&#38;#60;'>"</span>
<a name="line-650"></a> <span class='layout'>,</span> <span class='str'>"<!ENTITY gt '&#62;'>"</span>
<a name="line-651"></a> <span class='layout'>,</span> <span class='str'>"<!ENTITY amp '&#38;#38;'>"</span>
<a name="line-652"></a> <span class='layout'>,</span> <span class='str'>"<!ENTITY apos '&#39;'>"</span>
<a name="line-653"></a> <span class='layout'>,</span> <span class='str'>"<!ENTITY quot '&#34;'>"</span>
<a name="line-654"></a> <span class='keyglyph'>]</span>
<a name="line-655"></a>
<a name="line-656"></a><a name="predefDTDPart"></a><span class='definition'>predefDTDPart</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</span>
<a name="line-657"></a><span class='definition'>predefDTDPart</span>
<a name="line-658"></a> <span class='keyglyph'>=</span> <span class='varid'>parseXmlDTDPart</span> <span class='str'>"predefined entities"</span> <span class='varop'>$</span> <span class='varid'>mkXTextTree</span> <span class='varid'>predefinedEntities</span>
<a name="line-659"></a>
<a name="line-660"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-661"></a><span class='comment'>--</span>
<a name="line-662"></a><span class='comment'>-- 4.4 XML Processor Treatment of General Entities and References</span>
<a name="line-663"></a>
<a name="line-664"></a><a name="GeContext"></a><span class='keyword'>data</span> <span class='conid'>GeContext</span>
<a name="line-665"></a> <span class='keyglyph'>=</span> <span class='conid'>ReferenceInContent</span>
<a name="line-666"></a> <span class='keyglyph'>|</span> <span class='conid'>ReferenceInAttributeValue</span>
<a name="line-667"></a> <span class='keyglyph'>|</span> <span class='conid'>ReferenceInEntityValue</span>
<a name="line-668"></a> <span class='comment'>-- or OccursInAttributeValue -- not used during substitution but during validation</span>
<a name="line-669"></a> <span class='comment'>-- or ReferenceInDTD -- not used: syntax check detects errors</span>
<a name="line-670"></a>
<a name="line-671"></a><a name="GeFct"></a><span class='keyword'>type</span> <span class='conid'>GeFct</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'>GeStateFilter</span>
<a name="line-672"></a>
<a name="line-673"></a><a name="GeState"></a><span class='keyword'>type</span> <span class='conid'>GeState</span> <span class='varid'>res</span> <span class='keyglyph'>=</span> <span class='conid'>XState</span> <span class='conid'>GeEnv</span> <span class='varid'>res</span>
<a name="line-674"></a>
<a name="line-675"></a><a name="GeStateFilter"></a><span class='keyword'>type</span> <span class='conid'>GeStateFilter</span> <span class='keyglyph'>=</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>GeState</span> <span class='conid'>XmlTrees</span>
<a name="line-676"></a>
<a name="line-677"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-678"></a>
<a name="line-679"></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'>GeFct</span><span class='layout'>)</span>
<a name="line-680"></a>
<a name="line-681"></a><a name="emptyGeEnv"></a><span class='definition'>emptyGeEnv</span> <span class='keyglyph'>::</span> <span class='conid'>GeEnv</span>
<a name="line-682"></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-683"></a>
<a name="line-684"></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'>GeFct</span>
<a name="line-685"></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-686"></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-687"></a>
<a name="line-688"></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'>GeFct</span> <span class='keyglyph'>-></span> <span class='conid'>GeEnv</span> <span class='keyglyph'>-></span> <span class='conid'>GeEnv</span>
<a name="line-689"></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-690"></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-691"></a>
<a name="line-692"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-693"></a>
<a name="line-694"></a><span class='comment'>-- |</span>
<a name="line-695"></a><span class='comment'>-- substitution of general entities</span>
<a name="line-696"></a><span class='comment'>--</span>
<a name="line-697"></a><span class='comment'>-- input: a complete document tree including root node</span>
<a name="line-698"></a>
<a name="line-699"></a><a name="processGeneralEntities"></a><span class='definition'>processGeneralEntities</span> <span class='keyglyph'>::</span> <span class='conid'>XmlStateFilter</span> <span class='varid'>a</span>
<a name="line-700"></a><span class='definition'>processGeneralEntities</span>
<a name="line-701"></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-702"></a> <span class='varop'>.>></span>
<a name="line-703"></a> <span class='varid'>processEntities</span>
<a name="line-704"></a> <span class='varop'>.>></span>
<a name="line-705"></a> <span class='varid'>checkResult</span> <span class='str'>"in general entity processing"</span>
<a name="line-706"></a> <span class='varop'>.>></span>
<a name="line-707"></a> <span class='varid'>traceTree</span>
<a name="line-708"></a> <span class='varop'>.>></span>
<a name="line-709"></a> <span class='varid'>traceSource</span>
<a name="line-710"></a> <span class='layout'>)</span>
<a name="line-711"></a> <span class='varop'>`whenM`</span> <span class='varid'>statusOk</span>
<a name="line-712"></a> <span class='keyword'>where</span>
<a name="line-713"></a> <span class='varid'>processEntities</span> <span class='varid'>t'</span>
<a name="line-714"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-715"></a> <span class='varid'>res</span> <span class='keyglyph'><-</span> <span class='varid'>chain</span> <span class='varid'>initialEnv</span> <span class='layout'>(</span><span class='varid'>processGeneralEntity</span> <span class='conid'>ReferenceInContent</span> <span class='conid'>[]</span> <span class='varop'>$$<</span> <span class='varid'>getChildren</span> <span class='varid'>t'</span><span class='layout'>)</span>
<a name="line-716"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>replaceChildren</span> <span class='varid'>res</span> <span class='varid'>t'</span>
<a name="line-717"></a> <span class='keyword'>where</span>
<a name="line-718"></a> <span class='varid'>initialEnv</span> <span class='keyglyph'>=</span> <span class='varid'>emptyGeEnv</span>
<a name="line-719"></a>
<a name="line-720"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-721"></a>
<a name="line-722"></a><a name="processGeneralEntity"></a><span class='definition'>processGeneralEntity</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'>GeStateFilter</span>
<a name="line-723"></a><span class='definition'>processGeneralEntity</span> <span class='varid'>cx</span> <span class='varid'>rl</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'>DOCTYPE</span> <span class='keyword'>_</span><span class='layout'>)</span> <span class='varid'>dtdPart</span><span class='layout'>)</span>
<a name="line-724"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-725"></a> <span class='varid'>res</span> <span class='keyglyph'><-</span> <span class='varid'>processGeneralEntity</span> <span class='varid'>cx</span> <span class='varid'>rl</span> <span class='varop'>$$<</span> <span class='varid'>dtdPart</span>
<a name="line-726"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>replaceChildren</span> <span class='varid'>res</span> <span class='varid'>n</span>
<a name="line-727"></a>
<a name="line-728"></a><span class='definition'>processGeneralEntity</span> <span class='varid'>cx</span> <span class='varid'>rl</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'>ENTITY</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varid'>cl</span><span class='layout'>)</span>
<a name="line-729"></a> <span class='keyglyph'>|</span> <span class='varid'>isIntern</span>
<a name="line-730"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-731"></a> <span class='varid'>trace</span> <span class='num'>2</span> <span class='layout'>(</span><span class='str'>"processGeneralEnity: general entity definition for "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>name</span><span class='layout'>)</span>
<a name="line-732"></a> <span class='varid'>value</span> <span class='keyglyph'><-</span> <span class='varid'>liftF</span> <span class='layout'>(</span><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'>name</span><span class='layout'>)</span><span class='layout'>)</span> <span class='varop'>$</span> <span class='varid'>mkXTextTree</span> <span class='layout'>(</span><span class='varid'>xshow</span> <span class='varid'>cl</span><span class='layout'>)</span>
<a name="line-733"></a> <span class='varid'>res</span> <span class='keyglyph'><-</span> <span class='varid'>processGeneralEntity</span> <span class='conid'>ReferenceInEntityValue</span> <span class='layout'>(</span><span class='varid'>name</span><span class='conop'>:</span><span class='varid'>rl</span><span class='layout'>)</span> <span class='varop'>$$<</span> <span class='varid'>value</span>
<a name="line-734"></a> <span class='varid'>insertEntity</span> <span class='varid'>name</span> <span class='layout'>(</span><span class='varid'>substInternal</span> <span class='varid'>res</span><span class='layout'>)</span>
<a name="line-735"></a> <span class='keyglyph'>|</span> <span class='varid'>isExtern</span>
<a name="line-736"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-737"></a> <span class='varid'>baseUri</span> <span class='keyglyph'><-</span> <span class='varid'>getBaseURI</span>
<a name="line-738"></a> <span class='varid'>insertEntity</span> <span class='varid'>name</span> <span class='layout'>(</span><span class='varid'>substExternalParsed1Time</span> <span class='varid'>baseUri</span><span class='layout'>)</span>
<a name="line-739"></a>
<a name="line-740"></a> <span class='keyglyph'>|</span> <span class='varid'>isUnparsed</span>
<a name="line-741"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-742"></a> <span class='varid'>trace</span> <span class='num'>2</span> <span class='layout'>(</span><span class='str'>"processGeneralEnity: unparsed entity definition for "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>name</span><span class='layout'>)</span>
<a name="line-743"></a> <span class='varid'>insertEntity</span> <span class='varid'>name</span> <span class='layout'>(</span><span class='varid'>substUnparsed</span> <span class='conid'>[]</span><span class='layout'>)</span>
<a name="line-744"></a> <span class='keyword'>where</span>
<a name="line-745"></a> <span class='varid'>isUnparsed</span> <span class='keyglyph'>=</span> <span class='varid'>not</span> <span class='varid'>isIntern</span> <span class='varop'>&&</span> <span class='varid'>not</span> <span class='varid'>isExtern</span>
<a name="line-746"></a> <span class='varid'>isExtern</span> <span class='keyglyph'>=</span> <span class='varid'>not</span> <span class='varid'>isIntern</span> <span class='varop'>&&</span> <span class='varid'>not</span> <span class='layout'>(</span><span class='varid'>hasEntry</span> <span class='varid'>k_ndata</span> <span class='varid'>al</span><span class='layout'>)</span>
<a name="line-747"></a> <span class='varid'>isIntern</span> <span class='keyglyph'>=</span> <span class='varid'>not</span> <span class='layout'>(</span><span class='varid'>hasEntry</span> <span class='varid'>k_system</span> <span class='varid'>al</span><span class='layout'>)</span>
<a name="line-748"></a>
<a name="line-749"></a> <span class='varid'>name</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_name</span> <span class='varid'>al</span>
<a name="line-750"></a> <span class='comment'>-- sysVal = lookup1 k_system al</span>
<a name="line-751"></a> <span class='varid'>url</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_url</span> <span class='varid'>al</span> <span class='comment'>-- a_url contains absolut url for k_system</span>
<a name="line-752"></a> <span class='varid'>context</span> <span class='keyglyph'>=</span> <span class='varid'>addEntry</span> <span class='varid'>a_source</span> <span class='varid'>url</span> <span class='varid'>al</span>
<a name="line-753"></a>
<a name="line-754"></a> <span class='varid'>processExternalEntityContents</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>GeState</span> <span class='conid'>XmlTrees</span>
<a name="line-755"></a> <span class='varid'>processExternalEntityContents</span> <span class='varid'>cl'</span>
<a name="line-756"></a> <span class='keyglyph'>|</span> <span class='varid'>null</span> <span class='varid'>cl'</span> <span class='comment'>-- reading content did not succeed</span>
<a name="line-757"></a> <span class='keyglyph'>=</span> <span class='varid'>return</span> <span class='conid'>[]</span>
<a name="line-758"></a> <span class='keyglyph'>|</span> <span class='varid'>null</span> <span class='varid'>txt'</span> <span class='comment'>-- something weird in entity content</span>
<a name="line-759"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-760"></a> <span class='varid'>issueErr</span> <span class='layout'>(</span><span class='str'>"illegal external parsed entity value for entity "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>name</span><span class='layout'>)</span> <span class='varid'>n</span>
<a name="line-761"></a> <span class='varid'>return</span> <span class='conid'>[]</span>
<a name="line-762"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span> <span class='comment'>-- o.k.: parse the contents</span>
<a name="line-763"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-764"></a> <span class='varid'>res'</span> <span class='keyglyph'><-</span> <span class='varid'>liftF</span> <span class='layout'>(</span><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'>name</span><span class='layout'>)</span><span class='layout'>)</span> <span class='varop'>$$<</span> <span class='varid'>txt'</span>
<a name="line-765"></a> <span class='layout'>(</span> <span class='varid'>traceSource</span>
<a name="line-766"></a> <span class='varop'>.>></span>
<a name="line-767"></a> <span class='varid'>traceTree</span> <span class='layout'>)</span> <span class='varop'>$</span> <span class='varid'>mkRootTree</span> <span class='layout'>(</span><span class='varid'>fromAttrl</span> <span class='varid'>context</span><span class='layout'>)</span> <span class='varid'>res'</span>
<a name="line-768"></a> <span class='varid'>return</span> <span class='varid'>res'</span>
<a name="line-769"></a> <span class='keyword'>where</span>
<a name="line-770"></a> <span class='varid'>txt'</span> <span class='keyglyph'>=</span> <span class='layout'>(</span><span class='varid'>getChildren</span> <span class='varop'>.></span> <span class='varid'>isXText</span><span class='layout'>)</span> <span class='varop'>$$</span> <span class='varid'>cl'</span>
<a name="line-771"></a>
<a name="line-772"></a> <span class='varid'>insertEntity</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>GeFct</span> <span class='keyglyph'>-></span> <span class='conid'>GeState</span> <span class='conid'>XmlTrees</span>
<a name="line-773"></a> <span class='varid'>insertEntity</span> <span class='varid'>name'</span> <span class='varid'>fct'</span>
<a name="line-774"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-775"></a> <span class='varid'>geEnv'</span> <span class='keyglyph'><-</span> <span class='varid'>getState</span>
<a name="line-776"></a> <span class='keyword'>case</span> <span class='varid'>lookupGeEnv</span> <span class='varid'>name'</span> <span class='varid'>geEnv'</span> <span class='keyword'>of</span>
<a name="line-777"></a> <span class='conid'>Just</span> <span class='sel'>_fct</span>
<a name="line-778"></a> <span class='keyglyph'>-></span> <span class='keyword'>do</span>
<a name="line-779"></a> <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'>name</span> <span class='varop'>++</span> <span class='str'>" already defined, repeated definition ignored"</span><span class='layout'>)</span> <span class='varid'>n</span>
<a name="line-780"></a> <span class='varid'>return</span> <span class='conid'>[]</span>
<a name="line-781"></a> <span class='conid'>Nothing</span>
<a name="line-782"></a> <span class='keyglyph'>-></span> <span class='keyword'>do</span>
<a name="line-783"></a> <span class='varid'>changeState</span> <span class='varop'>$</span> <span class='varid'>addGeEntry</span> <span class='varid'>name'</span> <span class='varid'>fct'</span>
<a name="line-784"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>this</span> <span class='varid'>n</span>
<a name="line-785"></a>
<a name="line-786"></a> <span class='comment'>-- --------</span>
<a name="line-787"></a> <span class='comment'>--</span>
<a name="line-788"></a> <span class='comment'>-- 4.4 XML Processor Treatment of Entities and References</span>
<a name="line-789"></a>
<a name="line-790"></a> <span class='varid'>substInternal</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</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'>GeStateFilter</span>
<a name="line-791"></a> <span class='varid'>substInternal</span> <span class='varid'>nl</span> <span class='conid'>ReferenceInContent</span> <span class='varid'>rl'</span> <span class='sel'>_n'</span>
<a name="line-792"></a> <span class='keyglyph'>=</span> <span class='varid'>included</span> <span class='varid'>nl</span> <span class='varid'>rl'</span>
<a name="line-793"></a>
<a name="line-794"></a> <span class='varid'>substInternal</span> <span class='varid'>nl</span> <span class='conid'>ReferenceInAttributeValue</span> <span class='varid'>rl'</span> <span class='sel'>_n'</span>
<a name="line-795"></a> <span class='keyglyph'>=</span> <span class='varid'>includedInLiteral</span> <span class='varid'>nl</span> <span class='varid'>rl'</span>
<a name="line-796"></a>
<a name="line-797"></a> <span class='varid'>substInternal</span> <span class='sel'>_nl</span> <span class='conid'>ReferenceInEntityValue</span> <span class='sel'>_rl</span> <span class='varid'>n'</span>
<a name="line-798"></a> <span class='keyglyph'>=</span> <span class='varid'>bypassed</span> <span class='varid'>n'</span>
<a name="line-799"></a>
<a name="line-800"></a> <span class='comment'>-- --------</span>
<a name="line-801"></a>
<a name="line-802"></a> <span class='varid'>substExternalParsed1Time</span> <span class='keyglyph'>::</span> <span class='conid'>String</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'>GeStateFilter</span>
<a name="line-803"></a> <span class='varid'>substExternalParsed1Time</span> <span class='varid'>baseUri'</span> <span class='varid'>cx'</span> <span class='varid'>rl'</span> <span class='varid'>n'</span>
<a name="line-804"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-805"></a> <span class='varid'>trace</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'>name</span><span class='layout'>)</span>
<a name="line-806"></a> <span class='varid'>res</span> <span class='keyglyph'><-</span> <span class='varid'>runInLocalURIContext</span> <span class='varid'>getContents'</span> <span class='varop'>$</span> <span class='varid'>newDocument'</span> <span class='varid'>context</span>
<a name="line-807"></a> <span class='varid'>changeState</span> <span class='varop'>$</span> <span class='varid'>addGeEntry</span> <span class='varid'>name</span> <span class='layout'>(</span><span class='varid'>substExternalParsed</span> <span class='varid'>res</span><span class='layout'>)</span>
<a name="line-808"></a> <span class='varid'>substExternalParsed</span> <span class='varid'>res</span> <span class='varid'>cx'</span> <span class='varid'>rl'</span> <span class='varid'>n'</span>
<a name="line-809"></a> <span class='keyword'>where</span>
<a name="line-810"></a> <span class='varid'>getContents'</span> <span class='keyglyph'>::</span> <span class='conid'>GeStateFilter</span>
<a name="line-811"></a> <span class='varid'>getContents'</span> <span class='varid'>t''</span>
<a name="line-812"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-813"></a> <span class='varid'>setBaseURI</span> <span class='varid'>baseUri'</span>
<a name="line-814"></a> <span class='varid'>rs'</span> <span class='keyglyph'><-</span> <span class='varid'>getXmlEntityContents</span> <span class='varid'>t''</span>
<a name="line-815"></a> <span class='varid'>processExternalEntityContents</span> <span class='varid'>rs'</span>
<a name="line-816"></a>
<a name="line-817"></a>
<a name="line-818"></a> <span class='varid'>substExternalParsed</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</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'>GeStateFilter</span>
<a name="line-819"></a> <span class='varid'>substExternalParsed</span> <span class='varid'>nl</span> <span class='conid'>ReferenceInContent</span> <span class='varid'>rl'</span> <span class='sel'>_n'</span>
<a name="line-820"></a> <span class='keyglyph'>=</span> <span class='varid'>includedIfValidating</span> <span class='varid'>nl</span> <span class='varid'>rl'</span>
<a name="line-821"></a>
<a name="line-822"></a> <span class='varid'>substExternalParsed</span> <span class='sel'>_nl</span> <span class='conid'>ReferenceInAttributeValue</span> <span class='sel'>_rl</span> <span class='sel'>_n'</span>
<a name="line-823"></a> <span class='keyglyph'>=</span> <span class='varid'>forbidden</span> <span class='str'>"external parsed general"</span> <span class='str'>"in attribute value"</span>
<a name="line-824"></a>
<a name="line-825"></a> <span class='varid'>substExternalParsed</span> <span class='sel'>_nl</span> <span class='conid'>ReferenceInEntityValue</span> <span class='sel'>_rl</span> <span class='varid'>n'</span>
<a name="line-826"></a> <span class='keyglyph'>=</span> <span class='varid'>bypassed</span> <span class='varid'>n'</span>
<a name="line-827"></a>
<a name="line-828"></a> <span class='comment'>-- --------</span>
<a name="line-829"></a>
<a name="line-830"></a> <span class='varid'>substUnparsed</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</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'>GeStateFilter</span>
<a name="line-831"></a> <span class='varid'>substUnparsed</span> <span class='sel'>_nl</span> <span class='conid'>ReferenceInContent</span> <span class='sel'>_rl</span> <span class='sel'>_n'</span>
<a name="line-832"></a> <span class='keyglyph'>=</span> <span class='varid'>forbidden</span> <span class='str'>"unparsed"</span> <span class='str'>"content"</span>
<a name="line-833"></a> <span class='varid'>substUnparsed</span> <span class='sel'>_nl</span> <span class='conid'>ReferenceInAttributeValue</span> <span class='sel'>_rl</span> <span class='sel'>_n'</span>
<a name="line-834"></a> <span class='keyglyph'>=</span> <span class='varid'>forbidden</span> <span class='str'>"unparsed"</span> <span class='str'>"attribute value"</span>
<a name="line-835"></a> <span class='varid'>substUnparsed</span> <span class='sel'>_nl</span> <span class='conid'>ReferenceInEntityValue</span> <span class='sel'>_rl</span> <span class='sel'>_n'</span>
<a name="line-836"></a> <span class='keyglyph'>=</span> <span class='varid'>forbidden</span> <span class='str'>"unparsed"</span> <span class='str'>"entity value"</span>
<a name="line-837"></a>
<a name="line-838"></a> <span class='comment'>-- --------</span>
<a name="line-839"></a> <span class='comment'>-- see XML 1.0 chapter:</span>
<a name="line-840"></a>
<a name="line-841"></a> <span class='varid'>included</span> <span class='varid'>nl</span> <span class='varid'>rl'</span> <span class='comment'>-- 4.4.2</span>
<a name="line-842"></a> <span class='keyglyph'>=</span> <span class='varid'>processGeneralEntity</span> <span class='varid'>cx</span> <span class='layout'>(</span><span class='varid'>name</span><span class='conop'>:</span><span class='varid'>rl'</span><span class='layout'>)</span> <span class='varop'>$$<</span> <span class='varid'>nl</span>
<a name="line-843"></a>
<a name="line-844"></a> <span class='varid'>includedIfValidating</span> <span class='comment'>-- 4.4.3</span>
<a name="line-845"></a> <span class='keyglyph'>=</span> <span class='varid'>included</span>
<a name="line-846"></a>
<a name="line-847"></a> <span class='varid'>includedInLiteral</span> <span class='comment'>-- 4.4.5</span>
<a name="line-848"></a> <span class='keyglyph'>=</span> <span class='varid'>included</span>
<a name="line-849"></a>
<a name="line-850"></a> <span class='varid'>bypassed</span> <span class='varid'>n'</span> <span class='comment'>-- 4.4.7</span>
<a name="line-851"></a> <span class='keyglyph'>=</span> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>this</span> <span class='varid'>n'</span>
<a name="line-852"></a>
<a name="line-853"></a> <span class='varid'>forbidden</span> <span class='varid'>msg'</span> <span class='varid'>cx'</span> <span class='comment'>-- 4.4.4</span>
<a name="line-854"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-855"></a> <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'>name</span> <span class='varop'>++</span> <span class='str'>" forbidden in "</span> <span class='varop'>++</span> <span class='varid'>cx'</span><span class='layout'>)</span> <span class='varid'>n</span>
<a name="line-856"></a> <span class='varid'>return</span> <span class='conid'>[]</span>
<a name="line-857"></a>
<a name="line-858"></a> <span class='comment'>-- normalize default value in ATTLIST</span>
<a name="line-859"></a><span class='definition'>processGeneralEntity</span> <span class='sel'>_cx</span> <span class='varid'>rl</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='sel'>_cl</span><span class='layout'>)</span>
<a name="line-860"></a> <span class='keyglyph'>|</span> <span class='varid'>hasDefaultValue</span>
<a name="line-861"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-862"></a> <span class='varid'>res</span> <span class='keyglyph'><-</span> <span class='layout'>(</span> <span class='varid'>liftF</span> <span class='layout'>(</span><span class='varid'>parseXmlAttrValue</span> <span class='str'>"default value of attribute "</span><span class='layout'>)</span>
<a name="line-863"></a> <span class='varop'>.>></span>
<a name="line-864"></a> <span class='varid'>substGeneralEntityInAValue</span> <span class='varid'>rl</span>
<a name="line-865"></a> <span class='layout'>)</span> <span class='varop'>$</span> <span class='varid'>mkXTextTree</span> <span class='varid'>defaultValue</span>
<a name="line-866"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>addDTDAttr</span> <span class='varid'>a_default</span> <span class='layout'>(</span><span class='varid'>xshow</span> <span class='varid'>res</span><span class='layout'>)</span> <span class='varid'>n</span>
<a name="line-867"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span>
<a name="line-868"></a> <span class='keyglyph'>=</span> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>this</span> <span class='varid'>n</span>
<a name="line-869"></a> <span class='keyword'>where</span>
<a name="line-870"></a> <span class='varid'>hasDefaultValue</span> <span class='keyglyph'>=</span> <span class='varid'>hasEntry</span> <span class='varid'>a_default</span> <span class='varid'>al</span>
<a name="line-871"></a> <span class='varid'>defaultValue</span> <span class='keyglyph'>=</span> <span class='varid'>lookup1</span> <span class='varid'>a_default</span> <span class='varid'>al</span>
<a name="line-872"></a>
<a name="line-873"></a><span class='definition'>processGeneralEntity</span> <span class='varid'>cx</span> <span class='varid'>rl</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'>XEntityRef</span> <span class='varid'>name</span><span class='layout'>)</span> <span class='keyword'>_</span><span class='layout'>)</span>
<a name="line-874"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-875"></a> <span class='varid'>trace</span> <span class='num'>2</span> <span class='layout'>(</span><span class='str'>"processGeneralEnity: entity reference for entity "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>name</span><span class='layout'>)</span>
<a name="line-876"></a> <span class='varid'>trace</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'>rl</span><span class='layout'>)</span>
<a name="line-877"></a> <span class='varid'>geEnv</span> <span class='keyglyph'><-</span> <span class='varid'>getState</span>
<a name="line-878"></a> <span class='keyword'>case</span> <span class='varid'>lookupGeEnv</span> <span class='varid'>name</span> <span class='varid'>geEnv</span> <span class='keyword'>of</span>
<a name="line-879"></a> <span class='conid'>Just</span> <span class='varid'>fct</span>
<a name="line-880"></a> <span class='keyglyph'>-></span> <span class='keyword'>if</span> <span class='varid'>name</span> <span class='varop'>`elem`</span> <span class='varid'>rl</span>
<a name="line-881"></a> <span class='keyword'>then</span> <span class='keyword'>do</span>
<a name="line-882"></a> <span class='varid'>issueErr</span> <span class='layout'>(</span><span class='str'>"recursive substitution of general entity reference "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>ref</span> <span class='varop'>++</span> <span class='str'>" not processed"</span><span class='layout'>)</span> <span class='varid'>n</span>
<a name="line-883"></a> <span class='varid'>return</span> <span class='varid'>nl</span>
<a name="line-884"></a> <span class='keyword'>else</span> <span class='keyword'>do</span>
<a name="line-885"></a> <span class='varid'>fct</span> <span class='varid'>cx</span> <span class='varid'>rl</span> <span class='varid'>n</span>
<a name="line-886"></a> <span class='conid'>Nothing</span>
<a name="line-887"></a> <span class='keyglyph'>-></span> <span class='keyword'>do</span>
<a name="line-888"></a> <span class='varid'>issueErr</span> <span class='layout'>(</span><span class='str'>"general entity reference "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>ref</span> <span class='varop'>++</span> <span class='str'>" not processed, no definition found, (forward reference?)"</span><span class='layout'>)</span> <span class='varid'>n</span>
<a name="line-889"></a> <span class='varid'>return</span> <span class='varid'>nl</span>
<a name="line-890"></a> <span class='keyword'>where</span>
<a name="line-891"></a> <span class='varid'>nl</span> <span class='keyglyph'>=</span> <span class='varid'>this</span> <span class='varid'>n</span>
<a name="line-892"></a> <span class='varid'>ref</span> <span class='keyglyph'>=</span> <span class='varid'>xshow</span> <span class='varid'>nl</span>
<a name="line-893"></a>
<a name="line-894"></a>
<a name="line-895"></a><span class='definition'>processGeneralEntity</span> <span class='varid'>cx</span> <span class='varid'>rl</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='sel'>_tagName</span> <span class='varid'>al</span><span class='layout'>)</span> <span class='varid'>cl</span><span class='layout'>)</span>
<a name="line-896"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-897"></a> <span class='varid'>al'</span> <span class='keyglyph'><-</span> <span class='varid'>substGeneralEntityInAttr</span> <span class='varid'>rl</span> <span class='varop'>$$<</span> <span class='varid'>al</span>
<a name="line-898"></a> <span class='varid'>cl'</span> <span class='keyglyph'><-</span> <span class='varid'>processGeneralEntity</span> <span class='varid'>cx</span> <span class='varid'>rl</span> <span class='varop'>$$<</span> <span class='varid'>cl</span>
<a name="line-899"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='layout'>(</span><span class='varid'>replaceAttrl</span> <span class='varid'>al'</span> <span class='varop'>.></span> <span class='varid'>replaceChildren</span> <span class='varid'>cl'</span><span class='layout'>)</span> <span class='varid'>n</span>
<a name="line-900"></a>
<a name="line-901"></a><span class='definition'>processGeneralEntity</span> <span class='sel'>_cx</span> <span class='sel'>_rl</span> <span class='varid'>n</span>
<a name="line-902"></a> <span class='keyglyph'>=</span> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>this</span> <span class='varid'>n</span>
<a name="line-903"></a>
<a name="line-904"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-905"></a>
<a name="line-906"></a><a name="substGeneralEntityInAttr"></a><span class='definition'>substGeneralEntityInAttr</span> <span class='keyglyph'>::</span> <span class='conid'>RecList</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>GeState</span> <span class='conid'>XmlTrees</span>
<a name="line-907"></a><span class='definition'>substGeneralEntityInAttr</span> <span class='varid'>rl</span> <span class='varid'>a</span><span class='keyglyph'>@</span><span class='layout'>(</span><span class='conid'>NTree</span> <span class='layout'>(</span><span class='conid'>XAttr</span> <span class='keyword'>_</span><span class='layout'>)</span> <span class='varid'>aValue</span><span class='layout'>)</span>
<a name="line-908"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-909"></a> <span class='varid'>nv</span> <span class='keyglyph'><-</span> <span class='varid'>substGeneralEntityInAValue</span> <span class='varid'>rl</span> <span class='varop'>$$<</span> <span class='varid'>aValue</span>
<a name="line-910"></a> <span class='varid'>return</span> <span class='layout'>(</span><span class='varid'>replaceChildren</span> <span class='varid'>nv</span> <span class='varid'>a</span><span class='layout'>)</span>
<a name="line-911"></a>
<a name="line-912"></a><span class='definition'>substGeneralEntityInAttr</span> <span class='keyword'>_</span> <span class='keyword'>_</span>
<a name="line-913"></a> <span class='keyglyph'>=</span> <span class='varid'>return</span> <span class='conid'>[]</span>
<a name="line-914"></a>
<a name="line-915"></a><a name="substGeneralEntityInAValue"></a><span class='definition'>substGeneralEntityInAValue</span> <span class='keyglyph'>::</span> <span class='conid'>RecList</span> <span class='keyglyph'>-></span> <span class='conid'>GeStateFilter</span>
<a name="line-916"></a><span class='definition'>substGeneralEntityInAValue</span> <span class='varid'>rl</span>
<a name="line-917"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='varid'>processGeneralEntity</span> <span class='conid'>ReferenceInAttributeValue</span> <span class='varid'>rl</span>
<a name="line-918"></a> <span class='varop'>`whenM`</span>
<a name="line-919"></a> <span class='varid'>isXEntityRef</span>
<a name="line-920"></a> <span class='layout'>)</span>
<a name="line-921"></a> <span class='varop'>.>></span>
<a name="line-922"></a> <span class='varid'>liftMf</span> <span class='layout'>(</span> <span class='layout'>(</span> <span class='varid'>modifyText</span> <span class='varid'>normalizeWhiteSpace</span> <span class='varop'>`when`</span> <span class='varid'>isXText</span><span class='layout'>)</span>
<a name="line-923"></a> <span class='varop'>.></span>
<a name="line-924"></a> <span class='layout'>(</span><span class='varid'>transfCharRef</span> <span class='varop'>`when`</span> <span class='varid'>isXCharRef</span><span class='layout'>)</span>
<a name="line-925"></a> <span class='layout'>)</span>
<a name="line-926"></a> <span class='keyword'>where</span>
<a name="line-927"></a> <span class='varid'>normalizeWhiteSpace</span>
<a name="line-928"></a> <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-929"></a>
<a name="line-930"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-931"></a>
<a name="line-932"></a>
</pre></body>
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