hxt-8.3.0: doc/hdoc/src/Text-XML-HXT-Arrow-Edit.html
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<pre><a name="line-1"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='comment'>{- |
<a name="line-4"></a> Module : Text.XML.HXT.Arrow.Edit
<a name="line-5"></a> Copyright : Copyright (C) 2006-9 Uwe Schmidt
<a name="line-6"></a> License : MIT
<a name="line-7"></a>
<a name="line-8"></a> Maintainer : Uwe Schmidt (uwe@fh-wedel.de)
<a name="line-9"></a> Stability : stable
<a name="line-10"></a> Portability: portable
<a name="line-11"></a>
<a name="line-12"></a> common edit arrows
<a name="line-13"></a>
<a name="line-14"></a>-}</span>
<a name="line-15"></a>
<a name="line-16"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-17"></a>
<a name="line-18"></a><span class='keyword'>module</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>XML</span><span class='varop'>.</span><span class='conid'>HXT</span><span class='varop'>.</span><span class='conid'>Arrow</span><span class='varop'>.</span><span class='conid'>Edit</span>
<a name="line-19"></a> <span class='layout'>(</span> <span class='varid'>canonicalizeAllNodes</span>
<a name="line-20"></a> <span class='layout'>,</span> <span class='varid'>canonicalizeForXPath</span>
<a name="line-21"></a> <span class='layout'>,</span> <span class='varid'>canonicalizeContents</span>
<a name="line-22"></a> <span class='layout'>,</span> <span class='varid'>collapseAllXText</span>
<a name="line-23"></a> <span class='layout'>,</span> <span class='varid'>collapseXText</span>
<a name="line-24"></a>
<a name="line-25"></a> <span class='layout'>,</span> <span class='varid'>xshowEscapeXml</span>
<a name="line-26"></a>
<a name="line-27"></a> <span class='layout'>,</span> <span class='varid'>escapeXmlDoc</span>
<a name="line-28"></a> <span class='layout'>,</span> <span class='varid'>escapeHtmlDoc</span>
<a name="line-29"></a>
<a name="line-30"></a> <span class='layout'>,</span> <span class='varid'>haskellRepOfXmlDoc</span>
<a name="line-31"></a> <span class='layout'>,</span> <span class='varid'>treeRepOfXmlDoc</span>
<a name="line-32"></a> <span class='layout'>,</span> <span class='varid'>addHeadlineToXmlDoc</span>
<a name="line-33"></a>
<a name="line-34"></a> <span class='layout'>,</span> <span class='varid'>indentDoc</span>
<a name="line-35"></a> <span class='layout'>,</span> <span class='varid'>numberLinesInXmlDoc</span>
<a name="line-36"></a> <span class='layout'>,</span> <span class='varid'>preventEmptyElements</span>
<a name="line-37"></a>
<a name="line-38"></a> <span class='layout'>,</span> <span class='varid'>removeComment</span>
<a name="line-39"></a> <span class='layout'>,</span> <span class='varid'>removeAllComment</span>
<a name="line-40"></a> <span class='layout'>,</span> <span class='varid'>removeWhiteSpace</span>
<a name="line-41"></a> <span class='layout'>,</span> <span class='varid'>removeAllWhiteSpace</span>
<a name="line-42"></a> <span class='layout'>,</span> <span class='varid'>removeDocWhiteSpace</span>
<a name="line-43"></a>
<a name="line-44"></a> <span class='layout'>,</span> <span class='varid'>transfCdata</span>
<a name="line-45"></a> <span class='layout'>,</span> <span class='varid'>transfAllCdata</span>
<a name="line-46"></a> <span class='layout'>,</span> <span class='varid'>transfCharRef</span>
<a name="line-47"></a> <span class='layout'>,</span> <span class='varid'>transfAllCharRef</span>
<a name="line-48"></a>
<a name="line-49"></a> <span class='layout'>,</span> <span class='varid'>hasXmlPi</span>
<a name="line-50"></a> <span class='layout'>,</span> <span class='varid'>addXmlPi</span>
<a name="line-51"></a> <span class='layout'>,</span> <span class='varid'>addXmlPiEncoding</span>
<a name="line-52"></a>
<a name="line-53"></a> <span class='layout'>,</span> <span class='varid'>addDoctypeDecl</span>
<a name="line-54"></a> <span class='layout'>,</span> <span class='varid'>addXHtmlDoctypeStrict</span>
<a name="line-55"></a> <span class='layout'>,</span> <span class='varid'>addXHtmlDoctypeTransitional</span>
<a name="line-56"></a> <span class='layout'>,</span> <span class='varid'>addXHtmlDoctypeFrameset</span>
<a name="line-57"></a> <span class='layout'>)</span>
<a name="line-58"></a><span class='keyword'>where</span>
<a name="line-59"></a>
<a name="line-60"></a><span class='keyword'>import</span> <span class='conid'>Control</span><span class='varop'>.</span><span class='conid'>Arrow</span>
<a name="line-61"></a><span class='keyword'>import</span> <span class='conid'>Control</span><span class='varop'>.</span><span class='conid'>Arrow</span><span class='varop'>.</span><span class='conid'>ArrowList</span>
<a name="line-62"></a><span class='keyword'>import</span> <span class='conid'>Control</span><span class='varop'>.</span><span class='conid'>Arrow</span><span class='varop'>.</span><span class='conid'>ArrowIf</span>
<a name="line-63"></a><span class='keyword'>import</span> <span class='conid'>Control</span><span class='varop'>.</span><span class='conid'>Arrow</span><span class='varop'>.</span><span class='conid'>ArrowTree</span>
<a name="line-64"></a><span class='keyword'>import</span> <span class='conid'>Control</span><span class='varop'>.</span><span class='conid'>Arrow</span><span class='varop'>.</span><span class='conid'>ListArrow</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'>Arrow</span><span class='varop'>.</span><span class='conid'>XmlArrow</span>
<a name="line-67"></a><span class='keyword'>import</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>XML</span><span class='varop'>.</span><span class='conid'>HXT</span><span class='varop'>.</span><span class='conid'>DOM</span><span class='varop'>.</span><span class='conid'>Interface</span>
<a name="line-68"></a><span class='keyword'>import</span> <span class='keyword'>qualified</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'>XmlNode</span> <span class='keyword'>as</span> <span class='conid'>XN</span>
<a name="line-69"></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'>Unicode</span> <span class='layout'>(</span> <span class='varid'>isXmlSpaceChar</span> <span class='layout'>)</span>
<a name="line-70"></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'>FormatXmlTree</span> <span class='layout'>(</span> <span class='varid'>formatXmlTree</span> <span class='layout'>)</span>
<a name="line-71"></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'>HtmlParsec</span> <span class='layout'>(</span> <span class='varid'>emptyHtmlTags</span> <span class='layout'>)</span>
<a name="line-72"></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'>XmlEntities</span> <span class='layout'>(</span> <span class='varid'>xmlEntities</span> <span class='layout'>)</span>
<a name="line-73"></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'>XhtmlEntities</span> <span class='layout'>(</span> <span class='varid'>xhtmlEntities</span> <span class='layout'>)</span>
<a name="line-74"></a>
<a name="line-75"></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-76"></a><span class='keyword'>import</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>Maybe</span>
<a name="line-77"></a>
<a name="line-78"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-79"></a>
<a name="line-80"></a><span class='comment'>-- |</span>
<a name="line-81"></a><span class='comment'>-- Applies some "Canonical XML" rules to a document tree.</span>
<a name="line-82"></a><span class='comment'>--</span>
<a name="line-83"></a><span class='comment'>-- The rule differ slightly for canonical XML and XPath in handling of comments</span>
<a name="line-84"></a><span class='comment'>--</span>
<a name="line-85"></a><span class='comment'>-- Note: This is not the whole canonicalization as it is specified by the W3C</span>
<a name="line-86"></a><span class='comment'>-- Recommendation. Adding attribute defaults or sorting attributes in lexicographic</span>
<a name="line-87"></a><span class='comment'>-- order is done by the @transform@ function of module @Text.XML.HXT.Validator.Validation@.</span>
<a name="line-88"></a><span class='comment'>-- Replacing entities or line feed normalization is done by the parser.</span>
<a name="line-89"></a><span class='comment'>--</span>
<a name="line-90"></a><span class='comment'>--</span>
<a name="line-91"></a><span class='comment'>-- Not implemented yet:</span>
<a name="line-92"></a><span class='comment'>--</span>
<a name="line-93"></a><span class='comment'>-- - Whitespace within start and end tags is normalized</span>
<a name="line-94"></a><span class='comment'>--</span>
<a name="line-95"></a><span class='comment'>-- - Special characters in attribute values and character content are replaced by character references</span>
<a name="line-96"></a><span class='comment'>--</span>
<a name="line-97"></a><span class='comment'>-- see 'canonicalizeAllNodes' and 'canonicalizeForXPath'</span>
<a name="line-98"></a>
<a name="line-99"></a><a name="canonicalizeTree'"></a><span class='definition'>canonicalizeTree'</span> <span class='keyglyph'>::</span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-100"></a><span class='definition'>canonicalizeTree'</span> <span class='varid'>toBeRemoved</span>
<a name="line-101"></a> <span class='keyglyph'>=</span> <span class='varid'>processChildren</span> <span class='layout'>(</span><span class='varid'>none</span> <span class='varop'>`when`</span> <span class='varid'>isText</span><span class='layout'>)</span>
<a name="line-102"></a> <span class='varop'>>>></span>
<a name="line-103"></a> <span class='varid'>processBottomUp</span> <span class='varid'>canonicalize1Node</span>
<a name="line-104"></a> <span class='keyword'>where</span>
<a name="line-105"></a> <span class='varid'>canonicalize1Node</span> <span class='keyglyph'>::</span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-106"></a> <span class='varid'>canonicalize1Node</span>
<a name="line-107"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span><span class='varid'>deep</span> <span class='varid'>isPi</span> <span class='varop'>`when`</span> <span class='varid'>isDTD</span><span class='layout'>)</span> <span class='comment'>-- remove DTD parts, except PIs</span>
<a name="line-108"></a> <span class='varop'>>>></span>
<a name="line-109"></a> <span class='layout'>(</span><span class='varid'>none</span> <span class='varop'>`when`</span> <span class='varid'>toBeRemoved</span><span class='layout'>)</span> <span class='comment'>-- remove unintersting nodes</span>
<a name="line-110"></a> <span class='varop'>>>></span>
<a name="line-111"></a> <span class='layout'>(</span> <span class='varid'>processAttrl</span> <span class='layout'>(</span> <span class='varid'>processChildren</span> <span class='varid'>transfCharRef</span>
<a name="line-112"></a> <span class='varop'>>>></span>
<a name="line-113"></a> <span class='varid'>collapseXText</span>
<a name="line-114"></a> <span class='layout'>)</span>
<a name="line-115"></a> <span class='varop'>`when`</span> <span class='varid'>isElem</span>
<a name="line-116"></a> <span class='layout'>)</span>
<a name="line-117"></a> <span class='varop'>>>></span>
<a name="line-118"></a> <span class='varid'>transfCdata</span> <span class='comment'>-- CDATA -> text</span>
<a name="line-119"></a> <span class='varop'>>>></span>
<a name="line-120"></a> <span class='varid'>transfCharRef</span> <span class='comment'>-- Char refs -> text</span>
<a name="line-121"></a> <span class='varop'>>>></span>
<a name="line-122"></a> <span class='varid'>collapseXText</span> <span class='comment'>-- combine text</span>
<a name="line-123"></a>
<a name="line-124"></a>
<a name="line-125"></a><span class='comment'>-- |</span>
<a name="line-126"></a><span class='comment'>-- Applies some "Canonical XML" rules to a document tree.</span>
<a name="line-127"></a><span class='comment'>--</span>
<a name="line-128"></a><span class='comment'>-- The rule differ slightly for canonical XML and XPath in handling of comments</span>
<a name="line-129"></a><span class='comment'>--</span>
<a name="line-130"></a><span class='comment'>-- Note: This is not the whole canonicalization as it is specified by the W3C</span>
<a name="line-131"></a><span class='comment'>-- Recommendation. Adding attribute defaults or sorting attributes in lexicographic</span>
<a name="line-132"></a><span class='comment'>-- order is done by the @transform@ function of module @Text.XML.HXT.Validator.Validation@.</span>
<a name="line-133"></a><span class='comment'>-- Replacing entities or line feed normalization is done by the parser.</span>
<a name="line-134"></a><span class='comment'>--</span>
<a name="line-135"></a><span class='comment'>-- Rules: remove DTD parts, processing instructions, comments and substitute char refs in attribute</span>
<a name="line-136"></a><span class='comment'>-- values and text</span>
<a name="line-137"></a><span class='comment'>--</span>
<a name="line-138"></a><span class='comment'>-- Not implemented yet:</span>
<a name="line-139"></a><span class='comment'>--</span>
<a name="line-140"></a><span class='comment'>-- - Whitespace within start and end tags is normalized</span>
<a name="line-141"></a><span class='comment'>--</span>
<a name="line-142"></a><span class='comment'>-- - Special characters in attribute values and character content are replaced by character references</span>
<a name="line-143"></a>
<a name="line-144"></a><a name="canonicalizeAllNodes"></a><span class='definition'>canonicalizeAllNodes</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowList</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-145"></a><span class='definition'>canonicalizeAllNodes</span>
<a name="line-146"></a> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span>
<a name="line-147"></a> <span class='varid'>canonicalizeTree'</span> <span class='layout'>(</span> <span class='varid'>isCmt</span> <span class='comment'>-- remove comment</span>
<a name="line-148"></a> <span class='varop'><+></span>
<a name="line-149"></a> <span class='varid'>isXmlPi</span> <span class='comment'>-- remove xml declaration</span>
<a name="line-150"></a> <span class='layout'>)</span>
<a name="line-151"></a>
<a name="line-152"></a><span class='comment'>-- |</span>
<a name="line-153"></a><span class='comment'>-- Canonicalize a tree for XPath</span>
<a name="line-154"></a><span class='comment'>-- Like 'canonicalizeAllNodes' but comment nodes are not removed</span>
<a name="line-155"></a><span class='comment'>--</span>
<a name="line-156"></a><span class='comment'>-- see 'canonicalizeAllNodes'</span>
<a name="line-157"></a>
<a name="line-158"></a><a name="canonicalizeForXPath"></a><span class='definition'>canonicalizeForXPath</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowList</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-159"></a><span class='definition'>canonicalizeForXPath</span>
<a name="line-160"></a> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span>
<a name="line-161"></a> <span class='varid'>canonicalizeTree'</span> <span class='varid'>isXmlPi</span>
<a name="line-162"></a>
<a name="line-163"></a><span class='comment'>-- |</span>
<a name="line-164"></a><span class='comment'>-- Canonicalize the contents of a document</span>
<a name="line-165"></a><span class='comment'>--</span>
<a name="line-166"></a><span class='comment'>-- substitutes all char refs in text and attribute values,</span>
<a name="line-167"></a><span class='comment'>-- removes CDATA section and combines all sequences of resulting text</span>
<a name="line-168"></a><span class='comment'>-- nodes into a single text node</span>
<a name="line-169"></a><span class='comment'>--</span>
<a name="line-170"></a><span class='comment'>-- see 'canonicalizeAllNodes'</span>
<a name="line-171"></a>
<a name="line-172"></a><a name="canonicalizeContents"></a><span class='definition'>canonicalizeContents</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowList</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-173"></a><span class='definition'>canonicalizeContents</span>
<a name="line-174"></a> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span>
<a name="line-175"></a> <span class='varid'>processBottomUp</span> <span class='varid'>canonicalize1Node</span>
<a name="line-176"></a> <span class='keyword'>where</span>
<a name="line-177"></a> <span class='varid'>canonicalize1Node</span> <span class='keyglyph'>::</span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-178"></a> <span class='varid'>canonicalize1Node</span>
<a name="line-179"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='varid'>processAttrl</span> <span class='layout'>(</span> <span class='varid'>processChildren</span> <span class='varid'>transfCharRef</span>
<a name="line-180"></a> <span class='varop'>>>></span>
<a name="line-181"></a> <span class='varid'>collapseXText</span>
<a name="line-182"></a> <span class='layout'>)</span>
<a name="line-183"></a> <span class='varop'>`when`</span> <span class='varid'>isElem</span>
<a name="line-184"></a> <span class='layout'>)</span>
<a name="line-185"></a> <span class='varop'>>>></span>
<a name="line-186"></a> <span class='varid'>transfCdata</span> <span class='comment'>-- CDATA -> text</span>
<a name="line-187"></a> <span class='varop'>>>></span>
<a name="line-188"></a> <span class='varid'>transfCharRef</span> <span class='comment'>-- Char refs -> text</span>
<a name="line-189"></a> <span class='varop'>>>></span>
<a name="line-190"></a> <span class='varid'>collapseXText</span> <span class='comment'>-- combine text</span>
<a name="line-191"></a>
<a name="line-192"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-193"></a>
<a name="line-194"></a><a name="collapseXText'"></a><span class='definition'>collapseXText'</span> <span class='keyglyph'>::</span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-195"></a><span class='definition'>collapseXText'</span>
<a name="line-196"></a> <span class='keyglyph'>=</span> <span class='varid'>replaceChildren</span> <span class='layout'>(</span> <span class='varid'>listA</span> <span class='varid'>getChildren</span> <span class='varop'>>>></span> <span class='varid'>arrL</span> <span class='layout'>(</span><span class='varid'>foldr</span> <span class='varid'>mergeText'</span> <span class='conid'>[]</span><span class='layout'>)</span> <span class='layout'>)</span>
<a name="line-197"></a> <span class='keyword'>where</span>
<a name="line-198"></a> <span class='varid'>mergeText'</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTrees</span>
<a name="line-199"></a> <span class='varid'>mergeText'</span> <span class='varid'>t1</span> <span class='layout'>(</span><span class='varid'>t2</span> <span class='conop'>:</span> <span class='varid'>ts2</span><span class='layout'>)</span>
<a name="line-200"></a> <span class='keyglyph'>|</span> <span class='conid'>XN</span><span class='varop'>.</span><span class='varid'>isText</span> <span class='varid'>t1</span> <span class='varop'>&&</span> <span class='conid'>XN</span><span class='varop'>.</span><span class='varid'>isText</span> <span class='varid'>t2</span>
<a name="line-201"></a> <span class='keyglyph'>=</span> <span class='keyword'>let</span>
<a name="line-202"></a> <span class='varid'>s1</span> <span class='keyglyph'>=</span> <span class='varid'>fromJust</span> <span class='varop'>.</span> <span class='conid'>XN</span><span class='varop'>.</span><span class='varid'>getText</span> <span class='varop'>$</span> <span class='varid'>t1</span>
<a name="line-203"></a> <span class='varid'>s2</span> <span class='keyglyph'>=</span> <span class='varid'>fromJust</span> <span class='varop'>.</span> <span class='conid'>XN</span><span class='varop'>.</span><span class='varid'>getText</span> <span class='varop'>$</span> <span class='varid'>t2</span>
<a name="line-204"></a> <span class='varid'>t</span> <span class='keyglyph'>=</span> <span class='conid'>XN</span><span class='varop'>.</span><span class='varid'>mkText</span> <span class='layout'>(</span><span class='varid'>s1</span> <span class='varop'>++</span> <span class='varid'>s2</span><span class='layout'>)</span>
<a name="line-205"></a> <span class='keyword'>in</span>
<a name="line-206"></a> <span class='varid'>t</span> <span class='conop'>:</span> <span class='varid'>ts2</span>
<a name="line-207"></a> <span class='varid'>mergeText'</span> <span class='varid'>t1</span> <span class='varid'>ts</span>
<a name="line-208"></a> <span class='keyglyph'>=</span> <span class='varid'>t1</span> <span class='conop'>:</span> <span class='varid'>ts</span>
<a name="line-209"></a>
<a name="line-210"></a><span class='comment'>-- |</span>
<a name="line-211"></a><span class='comment'>-- Collects sequences of text nodes in the list of children of a node into one single text node.</span>
<a name="line-212"></a><span class='comment'>-- This is useful, e.g. after char and entity reference substitution</span>
<a name="line-213"></a>
<a name="line-214"></a><a name="collapseXText"></a><span class='definition'>collapseXText</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowList</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-215"></a><span class='definition'>collapseXText</span>
<a name="line-216"></a> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span>
<a name="line-217"></a> <span class='varid'>collapseXText'</span>
<a name="line-218"></a>
<a name="line-219"></a><span class='comment'>-- |</span>
<a name="line-220"></a><span class='comment'>-- Applies collapseXText recursively.</span>
<a name="line-221"></a><span class='comment'>--</span>
<a name="line-222"></a><span class='comment'>--</span>
<a name="line-223"></a><span class='comment'>-- see also : 'collapseXText'</span>
<a name="line-224"></a>
<a name="line-225"></a><a name="collapseAllXText"></a><span class='definition'>collapseAllXText</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowList</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-226"></a><span class='definition'>collapseAllXText</span>
<a name="line-227"></a> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span>
<a name="line-228"></a> <span class='varid'>processBottomUp</span> <span class='varid'>collapseXText'</span>
<a name="line-229"></a>
<a name="line-230"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-231"></a>
<a name="line-232"></a><span class='comment'>-- | apply an arrow to the input and convert the resulting XML trees into an XML escaped string</span>
<a name="line-233"></a><span class='comment'>--</span>
<a name="line-234"></a><span class='comment'>-- This is a save variant for converting a tree into an XML string representation that is parsable with 'Text.XML.HXT.Arrow.ReadDocument'.</span>
<a name="line-235"></a><span class='comment'>-- It is implemented with 'Text.XML.HXT.Arrow.XmlArrow.xshow', but xshow does no XML escaping. The XML escaping is done with</span>
<a name="line-236"></a><span class='comment'>-- 'Text.XML.HXT.Arrow.Edit.escapeXmlDoc' before xshow is applied.</span>
<a name="line-237"></a><span class='comment'>--</span>
<a name="line-238"></a><span class='comment'>-- So the following law holds</span>
<a name="line-239"></a><span class='comment'>--</span>
<a name="line-240"></a><span class='comment'>-- > xshowEscape f >>> xread == f</span>
<a name="line-241"></a>
<a name="line-242"></a><a name="xshowEscapeXml"></a><span class='definition'>xshowEscapeXml</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='varid'>n</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='varid'>a</span> <span class='varid'>n</span> <span class='conid'>String</span>
<a name="line-243"></a><span class='definition'>xshowEscapeXml</span> <span class='varid'>f</span> <span class='keyglyph'>=</span> <span class='varid'>xshow</span> <span class='layout'>(</span><span class='varid'>f</span> <span class='varop'>>>></span> <span class='varid'>escapeXmlDoc</span><span class='layout'>)</span>
<a name="line-244"></a>
<a name="line-245"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-246"></a>
<a name="line-247"></a><span class='comment'>-- |</span>
<a name="line-248"></a><span class='comment'>-- escape XmlText,</span>
<a name="line-249"></a><span class='comment'>-- transform all special XML chars into char- or entity- refs</span>
<a name="line-250"></a>
<a name="line-251"></a><a name="EntityRefTable"></a><span class='keyword'>type</span> <span class='conid'>EntityRefTable</span> <span class='keyglyph'>=</span> <span class='conid'>M</span><span class='varop'>.</span><span class='conid'>Map</span> <span class='conid'>Int</span> <span class='conid'>String</span>
<a name="line-252"></a>
<a name="line-253"></a><a name="xmlEntityRefTable"></a><span class='definition'>xmlEntityRefTable</span>
<a name="line-254"></a> <span class='layout'>,</span> <span class='varid'>xhtmlEntityRefTable</span> <span class='keyglyph'>::</span> <span class='conid'>EntityRefTable</span>
<a name="line-255"></a>
<a name="line-256"></a><span class='definition'>xmlEntityRefTable</span> <span class='keyglyph'>=</span> <span class='varid'>buildEntityRefTable</span> <span class='varop'>$</span> <span class='varid'>xmlEntities</span>
<a name="line-257"></a><a name="xhtmlEntityRefTable"></a><span class='definition'>xhtmlEntityRefTable</span> <span class='keyglyph'>=</span> <span class='varid'>buildEntityRefTable</span> <span class='varop'>$</span> <span class='varid'>xhtmlEntities</span>
<a name="line-258"></a>
<a name="line-259"></a><a name="buildEntityRefTable"></a><span class='definition'>buildEntityRefTable</span> <span class='keyglyph'>::</span> <span class='keyglyph'>[</span><span class='layout'>(</span><span class='conid'>String</span><span class='layout'>,</span> <span class='conid'>Int</span><span class='layout'>)</span><span class='keyglyph'>]</span> <span class='keyglyph'>-></span> <span class='conid'>EntityRefTable</span>
<a name="line-260"></a><span class='definition'>buildEntityRefTable</span> <span class='keyglyph'>=</span> <span class='conid'>M</span><span class='varop'>.</span><span class='varid'>fromList</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'>x</span><span class='layout'>,</span><span class='varid'>y</span><span class='layout'>)</span> <span class='keyglyph'>-></span> <span class='layout'>(</span><span class='varid'>y</span><span class='layout'>,</span><span class='varid'>x</span><span class='layout'>)</span> <span class='layout'>)</span>
<a name="line-261"></a>
<a name="line-262"></a><a name="escapeText''"></a><span class='definition'>escapeText''</span> <span class='keyglyph'>::</span> <span class='layout'>(</span><span class='conid'>Char</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTree</span><span class='layout'>)</span> <span class='keyglyph'>-></span> <span class='layout'>(</span><span class='conid'>Char</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span><span class='layout'>)</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTrees</span>
<a name="line-263"></a><span class='definition'>escapeText''</span> <span class='varid'>escChar</span> <span class='varid'>isEsc</span> <span class='varid'>t</span>
<a name="line-264"></a> <span class='keyglyph'>=</span> <span class='varid'>maybe</span> <span class='keyglyph'>[</span><span class='varid'>t</span><span class='keyglyph'>]</span> <span class='varid'>escape'</span> <span class='varop'>.</span> <span class='conid'>XN</span><span class='varop'>.</span><span class='varid'>getText</span> <span class='varop'>$</span> <span class='varid'>t</span>
<a name="line-265"></a> <span class='keyword'>where</span>
<a name="line-266"></a> <span class='varid'>escape'</span> <span class='str'>""</span> <span class='keyglyph'>=</span> <span class='keyglyph'>[</span><span class='varid'>t</span><span class='keyglyph'>]</span> <span class='comment'>-- empty text nodes remain empty text nodes</span>
<a name="line-267"></a> <span class='varid'>escape'</span> <span class='varid'>s</span> <span class='keyglyph'>=</span> <span class='varid'>escape</span> <span class='varid'>s</span> <span class='comment'>-- they do not disapear</span>
<a name="line-268"></a>
<a name="line-269"></a> <span class='varid'>escape</span> <span class='str'>""</span>
<a name="line-270"></a> <span class='keyglyph'>=</span> <span class='conid'>[]</span>
<a name="line-271"></a> <span class='varid'>escape</span> <span class='layout'>(</span><span class='varid'>c</span><span class='conop'>:</span><span class='varid'>s1</span><span class='layout'>)</span>
<a name="line-272"></a> <span class='keyglyph'>|</span> <span class='varid'>isEsc</span> <span class='varid'>c</span>
<a name="line-273"></a> <span class='keyglyph'>=</span> <span class='varid'>escChar</span> <span class='varid'>c</span> <span class='conop'>:</span> <span class='varid'>escape</span> <span class='varid'>s1</span>
<a name="line-274"></a> <span class='varid'>escape</span> <span class='varid'>s</span>
<a name="line-275"></a> <span class='keyglyph'>=</span> <span class='conid'>XN</span><span class='varop'>.</span><span class='varid'>mkText</span> <span class='varid'>s1</span> <span class='conop'>:</span> <span class='varid'>escape</span> <span class='varid'>s2</span>
<a name="line-276"></a> <span class='keyword'>where</span>
<a name="line-277"></a> <span class='layout'>(</span><span class='varid'>s1</span><span class='layout'>,</span> <span class='varid'>s2</span><span class='layout'>)</span> <span class='keyglyph'>=</span> <span class='varid'>break</span> <span class='varid'>isEsc</span> <span class='varid'>s</span>
<a name="line-278"></a>
<a name="line-279"></a><span class='comment'>{-
<a name="line-280"></a>escapeCharRef :: Char -> XmlTree
<a name="line-281"></a>escapeCharRef = XN.mkCharRef . fromEnum
<a name="line-282"></a>-}</span>
<a name="line-283"></a>
<a name="line-284"></a><a name="escapeEntityRef"></a><span class='definition'>escapeEntityRef</span> <span class='keyglyph'>::</span> <span class='conid'>EntityRefTable</span> <span class='keyglyph'>-></span> <span class='conid'>Char</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTree</span>
<a name="line-285"></a><span class='definition'>escapeEntityRef</span> <span class='varid'>entityTable</span> <span class='varid'>c</span>
<a name="line-286"></a> <span class='keyglyph'>=</span> <span class='varid'>maybe</span> <span class='layout'>(</span><span class='conid'>XN</span><span class='varop'>.</span><span class='varid'>mkCharRef</span> <span class='varid'>c'</span><span class='layout'>)</span> <span class='conid'>XN</span><span class='varop'>.</span><span class='varid'>mkEntityRef</span> <span class='varop'>.</span> <span class='conid'>M</span><span class='varop'>.</span><span class='varid'>lookup</span> <span class='varid'>c'</span> <span class='varop'>$</span> <span class='varid'>entityTable</span>
<a name="line-287"></a> <span class='keyword'>where</span>
<a name="line-288"></a> <span class='varid'>c'</span> <span class='keyglyph'>=</span> <span class='varid'>fromEnum</span> <span class='varid'>c</span>
<a name="line-289"></a>
<a name="line-290"></a><a name="escapeXmlEntityRef"></a><span class='definition'>escapeXmlEntityRef</span> <span class='keyglyph'>::</span> <span class='conid'>Char</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTree</span>
<a name="line-291"></a><span class='definition'>escapeXmlEntityRef</span> <span class='keyglyph'>=</span> <span class='varid'>escapeEntityRef</span> <span class='varid'>xmlEntityRefTable</span>
<a name="line-292"></a>
<a name="line-293"></a><a name="escapeHtmlEntityRef"></a><span class='definition'>escapeHtmlEntityRef</span> <span class='keyglyph'>::</span> <span class='conid'>Char</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTree</span>
<a name="line-294"></a><span class='definition'>escapeHtmlEntityRef</span> <span class='keyglyph'>=</span> <span class='varid'>escapeEntityRef</span> <span class='varid'>xhtmlEntityRefTable</span>
<a name="line-295"></a>
<a name="line-296"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-297"></a>
<a name="line-298"></a><span class='comment'>-- |</span>
<a name="line-299"></a><span class='comment'>-- escape all special XML chars into XML entity references or char references</span>
<a name="line-300"></a><span class='comment'>--</span>
<a name="line-301"></a><span class='comment'>-- convert the special XML chars \< and & in text nodes into prefefiened XML entity references,</span>
<a name="line-302"></a><span class='comment'>-- in attribute values also \', \", \>, \\n, \\r and \\t are converted into entity or char references,</span>
<a name="line-303"></a><span class='comment'>-- in comments nothing is converted (see XML standard 2.4, useful e.g. for JavaScript).</span>
<a name="line-304"></a>
<a name="line-305"></a><a name="escapeXmlDoc"></a><span class='definition'>escapeXmlDoc</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowList</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-306"></a><span class='definition'>escapeXmlDoc</span>
<a name="line-307"></a> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span> <span class='varid'>escapeDoc</span> <span class='varid'>escXmlText</span> <span class='varid'>escXmlAttrValue</span>
<a name="line-308"></a> <span class='keyword'>where</span>
<a name="line-309"></a> <span class='varid'>escXmlText</span>
<a name="line-310"></a> <span class='keyglyph'>=</span> <span class='varid'>arrL</span> <span class='varop'>$</span> <span class='varid'>escapeText''</span> <span class='varid'>escapeXmlEntityRef</span> <span class='layout'>(</span><span class='varop'>`elem`</span> <span class='str'>"<&"</span><span class='layout'>)</span> <span class='comment'>-- no escape for ", ' and > required: XML standard 2.4</span>
<a name="line-311"></a> <span class='varid'>escXmlAttrValue</span>
<a name="line-312"></a> <span class='keyglyph'>=</span> <span class='varid'>arrL</span> <span class='varop'>$</span> <span class='varid'>escapeText''</span> <span class='varid'>escapeXmlEntityRef</span> <span class='layout'>(</span><span class='varop'>`elem`</span> <span class='str'>"<>\"\'&\n\r\t"</span><span class='layout'>)</span>
<a name="line-313"></a>
<a name="line-314"></a>
<a name="line-315"></a><span class='comment'>-- |</span>
<a name="line-316"></a><span class='comment'>-- escape all special HTML chars into XHTML entity references or char references</span>
<a name="line-317"></a><span class='comment'>--</span>
<a name="line-318"></a><span class='comment'>-- convert the special XML chars \< and & and all none ASCII chars in text nodes into prefefiened XML or XHTML entity references,</span>
<a name="line-319"></a><span class='comment'>-- in attribute values also \', \", \>, \\n, \\r and \\t are converted into entity or char references,</span>
<a name="line-320"></a><span class='comment'>-- in comments nothing is converted</span>
<a name="line-321"></a>
<a name="line-322"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-323"></a>
<a name="line-324"></a><a name="escapeHtmlDoc"></a><span class='definition'>escapeHtmlDoc</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowList</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-325"></a><span class='definition'>escapeHtmlDoc</span>
<a name="line-326"></a> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span> <span class='varid'>escapeDoc</span> <span class='varid'>escHtmlText</span> <span class='varid'>escHtmlAttrValue</span>
<a name="line-327"></a> <span class='keyword'>where</span>
<a name="line-328"></a> <span class='varid'>escHtmlText</span>
<a name="line-329"></a> <span class='keyglyph'>=</span> <span class='varid'>arrL</span> <span class='varop'>$</span> <span class='varid'>escapeText''</span> <span class='varid'>escapeHtmlEntityRef</span> <span class='varid'>isHtmlTextEsc</span>
<a name="line-330"></a> <span class='varid'>escHtmlAttrValue</span>
<a name="line-331"></a> <span class='keyglyph'>=</span> <span class='varid'>arrL</span> <span class='varop'>$</span> <span class='varid'>escapeText''</span> <span class='varid'>escapeHtmlEntityRef</span> <span class='varid'>isHtmlAttrEsc</span>
<a name="line-332"></a>
<a name="line-333"></a> <span class='varid'>isHtmlTextEsc</span> <span class='varid'>c</span>
<a name="line-334"></a> <span class='keyglyph'>=</span> <span class='varid'>c</span> <span class='varop'>>=</span> <span class='varid'>toEnum</span><span class='layout'>(</span><span class='num'>128</span><span class='layout'>)</span> <span class='varop'>||</span> <span class='layout'>(</span> <span class='varid'>c</span> <span class='varop'>`elem`</span> <span class='str'>"<&"</span> <span class='layout'>)</span>
<a name="line-335"></a> <span class='varid'>isHtmlAttrEsc</span> <span class='varid'>c</span>
<a name="line-336"></a> <span class='keyglyph'>=</span> <span class='varid'>c</span> <span class='varop'>>=</span> <span class='varid'>toEnum</span><span class='layout'>(</span><span class='num'>128</span><span class='layout'>)</span> <span class='varop'>||</span> <span class='layout'>(</span> <span class='varid'>c</span> <span class='varop'>`elem`</span> <span class='str'>"<>\"\'&\n\r\t"</span> <span class='layout'>)</span>
<a name="line-337"></a>
<a name="line-338"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-339"></a>
<a name="line-340"></a><a name="escapeDoc"></a><span class='definition'>escapeDoc</span> <span class='keyglyph'>::</span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span> <span class='keyglyph'>-></span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-341"></a><span class='definition'>escapeDoc</span> <span class='varid'>escText</span> <span class='varid'>escAttr</span>
<a name="line-342"></a> <span class='keyglyph'>=</span> <span class='varid'>escape</span>
<a name="line-343"></a> <span class='keyword'>where</span>
<a name="line-344"></a> <span class='varid'>escape</span>
<a name="line-345"></a> <span class='keyglyph'>=</span> <span class='varid'>choiceA</span>
<a name="line-346"></a> <span class='keyglyph'>[</span> <span class='varid'>isElem</span> <span class='conop'>:-></span> <span class='layout'>(</span> <span class='varid'>processChildren</span> <span class='varid'>escape</span>
<a name="line-347"></a> <span class='varop'>>>></span>
<a name="line-348"></a> <span class='varid'>processAttrl</span> <span class='varid'>escVal</span>
<a name="line-349"></a> <span class='layout'>)</span>
<a name="line-350"></a> <span class='layout'>,</span> <span class='varid'>isText</span> <span class='conop'>:-></span> <span class='varid'>escText</span>
<a name="line-351"></a> <span class='comment'>-- , isCmt :-> escCmt</span>
<a name="line-352"></a> <span class='layout'>,</span> <span class='varid'>isDTD</span> <span class='conop'>:-></span> <span class='varid'>processTopDown</span> <span class='varid'>escDTD</span>
<a name="line-353"></a> <span class='layout'>,</span> <span class='varid'>this</span> <span class='conop'>:-></span> <span class='varid'>this</span>
<a name="line-354"></a> <span class='keyglyph'>]</span>
<a name="line-355"></a> <span class='varid'>escVal</span> <span class='keyglyph'>=</span> <span class='varid'>processChildren</span> <span class='varid'>escAttr</span>
<a name="line-356"></a> <span class='varid'>escDTD</span> <span class='keyglyph'>=</span> <span class='varid'>escVal</span> <span class='varop'>`when`</span> <span class='layout'>(</span> <span class='varid'>isDTDEntity</span> <span class='varop'><+></span> <span class='varid'>isDTDPEntity</span> <span class='layout'>)</span>
<a name="line-357"></a>
<a name="line-358"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-359"></a>
<a name="line-360"></a><a name="preventEmptyElements"></a><span class='definition'>preventEmptyElements</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowList</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='conid'>Bool</span> <span class='keyglyph'>-></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-361"></a><span class='definition'>preventEmptyElements</span> <span class='varid'>isHtml</span>
<a name="line-362"></a> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span> <span class='varid'>insertDummyElem</span>
<a name="line-363"></a> <span class='keyword'>where</span>
<a name="line-364"></a> <span class='varid'>isNoneEmpty</span>
<a name="line-365"></a> <span class='keyglyph'>|</span> <span class='varid'>isHtml</span> <span class='keyglyph'>=</span> <span class='varid'>hasNameWith</span> <span class='layout'>(</span><span class='varid'>localPart</span> <span class='varop'>>>></span> <span class='layout'>(</span><span class='varop'>`notElem`</span> <span class='varid'>emptyHtmlTags</span><span class='layout'>)</span><span class='layout'>)</span>
<a name="line-366"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span> <span class='keyglyph'>=</span> <span class='varid'>this</span>
<a name="line-367"></a>
<a name="line-368"></a> <span class='varid'>insertDummyElem</span>
<a name="line-369"></a> <span class='keyglyph'>=</span> <span class='varid'>processBottomUp</span>
<a name="line-370"></a> <span class='layout'>(</span> <span class='varid'>replaceChildren</span> <span class='layout'>(</span><span class='varid'>txt</span> <span class='str'>""</span><span class='layout'>)</span>
<a name="line-371"></a> <span class='varop'>`when`</span>
<a name="line-372"></a> <span class='layout'>(</span> <span class='varid'>isElem</span>
<a name="line-373"></a> <span class='varop'>>>></span>
<a name="line-374"></a> <span class='varid'>isNoneEmpty</span>
<a name="line-375"></a> <span class='varop'>>>></span>
<a name="line-376"></a> <span class='varid'>neg</span> <span class='varid'>getChildren</span>
<a name="line-377"></a> <span class='layout'>)</span>
<a name="line-378"></a> <span class='layout'>)</span>
<a name="line-379"></a>
<a name="line-380"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-381"></a>
<a name="line-382"></a><span class='comment'>-- |</span>
<a name="line-383"></a><span class='comment'>-- convert a document into a Haskell representation (with show).</span>
<a name="line-384"></a><span class='comment'>--</span>
<a name="line-385"></a><span class='comment'>-- Useful for debugging and trace output.</span>
<a name="line-386"></a><span class='comment'>-- see also : 'treeRepOfXmlDoc', 'numberLinesInXmlDoc'</span>
<a name="line-387"></a>
<a name="line-388"></a><a name="haskellRepOfXmlDoc"></a><span class='definition'>haskellRepOfXmlDoc</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowList</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-389"></a><span class='definition'>haskellRepOfXmlDoc</span>
<a name="line-390"></a> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span>
<a name="line-391"></a> <span class='varid'>root</span> <span class='keyglyph'>[</span><span class='varid'>getAttrl</span><span class='keyglyph'>]</span> <span class='keyglyph'>[</span><span class='varid'>show</span> <span class='varop'>^>></span> <span class='varid'>mkText</span><span class='keyglyph'>]</span>
<a name="line-392"></a>
<a name="line-393"></a><span class='comment'>-- |</span>
<a name="line-394"></a><span class='comment'>-- convert a document into a text and add line numbers to the text representation.</span>
<a name="line-395"></a><span class='comment'>-- </span>
<a name="line-396"></a><span class='comment'>-- Result is a root node with a single text node as child.</span>
<a name="line-397"></a><span class='comment'>-- Useful for debugging and trace output.</span>
<a name="line-398"></a><span class='comment'>-- see also : 'haskellRepOfXmlDoc', 'treeRepOfXmlDoc'</span>
<a name="line-399"></a>
<a name="line-400"></a><a name="numberLinesInXmlDoc"></a><span class='definition'>numberLinesInXmlDoc</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowList</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-401"></a><span class='definition'>numberLinesInXmlDoc</span>
<a name="line-402"></a> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span>
<a name="line-403"></a> <span class='varid'>processChildren</span> <span class='layout'>(</span><span class='varid'>changeText</span> <span class='varid'>numberLines</span><span class='layout'>)</span>
<a name="line-404"></a> <span class='keyword'>where</span>
<a name="line-405"></a> <span class='varid'>numberLines</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-406"></a> <span class='varid'>numberLines</span> <span class='varid'>str</span>
<a name="line-407"></a> <span class='keyglyph'>=</span> <span class='varid'>concat</span> <span class='varop'>$</span>
<a name="line-408"></a> <span class='varid'>zipWith</span> <span class='layout'>(</span><span class='keyglyph'>\</span> <span class='varid'>n</span> <span class='varid'>l</span> <span class='keyglyph'>-></span> <span class='varid'>lineNr</span> <span class='varid'>n</span> <span class='varop'>++</span> <span class='varid'>l</span> <span class='varop'>++</span> <span class='str'>"\n"</span><span class='layout'>)</span> <span class='keyglyph'>[</span><span class='num'>1</span><span class='keyglyph'>..</span><span class='keyglyph'>]</span> <span class='layout'>(</span><span class='varid'>lines</span> <span class='varid'>str</span><span class='layout'>)</span>
<a name="line-409"></a> <span class='keyword'>where</span>
<a name="line-410"></a> <span class='varid'>lineNr</span> <span class='keyglyph'>::</span> <span class='conid'>Int</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-411"></a> <span class='varid'>lineNr</span> <span class='varid'>n</span> <span class='keyglyph'>=</span> <span class='layout'>(</span><span class='varid'>reverse</span> <span class='layout'>(</span><span class='varid'>take</span> <span class='num'>6</span> <span class='layout'>(</span><span class='varid'>reverse</span> <span class='layout'>(</span><span class='varid'>show</span> <span class='varid'>n</span><span class='layout'>)</span> <span class='varop'>++</span> <span class='varid'>replicate</span> <span class='num'>6</span> <span class='chr'>' '</span><span class='layout'>)</span><span class='layout'>)</span><span class='layout'>)</span> <span class='varop'>++</span> <span class='str'>" "</span>
<a name="line-412"></a>
<a name="line-413"></a><span class='comment'>-- |</span>
<a name="line-414"></a><span class='comment'>-- convert a document into a text representation in tree form.</span>
<a name="line-415"></a><span class='comment'>--</span>
<a name="line-416"></a><span class='comment'>-- Useful for debugging and trace output.</span>
<a name="line-417"></a><span class='comment'>-- see also : 'haskellRepOfXmlDoc', 'numberLinesInXmlDoc'</span>
<a name="line-418"></a>
<a name="line-419"></a><a name="treeRepOfXmlDoc"></a><span class='definition'>treeRepOfXmlDoc</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowList</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-420"></a><span class='definition'>treeRepOfXmlDoc</span>
<a name="line-421"></a> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span>
<a name="line-422"></a> <span class='varid'>root</span> <span class='keyglyph'>[</span><span class='varid'>getAttrl</span><span class='keyglyph'>]</span> <span class='keyglyph'>[</span><span class='varid'>formatXmlTree</span> <span class='varop'>^>></span> <span class='varid'>mkText</span><span class='keyglyph'>]</span>
<a name="line-423"></a>
<a name="line-424"></a><a name="addHeadlineToXmlDoc"></a><span class='definition'>addHeadlineToXmlDoc</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-425"></a><span class='definition'>addHeadlineToXmlDoc</span>
<a name="line-426"></a> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span> <span class='layout'>(</span> <span class='varid'>addTitle</span> <span class='varop'>$<</span> <span class='layout'>(</span><span class='varid'>getAttrValue</span> <span class='varid'>a_source</span> <span class='varop'>>>^</span> <span class='varid'>formatTitle</span><span class='layout'>)</span> <span class='layout'>)</span>
<a name="line-427"></a> <span class='keyword'>where</span>
<a name="line-428"></a> <span class='varid'>addTitle</span> <span class='varid'>str</span>
<a name="line-429"></a> <span class='keyglyph'>=</span> <span class='varid'>replaceChildren</span> <span class='layout'>(</span> <span class='varid'>txt</span> <span class='varid'>str</span> <span class='varop'><+></span> <span class='varid'>getChildren</span> <span class='varop'><+></span> <span class='varid'>txt</span> <span class='str'>"\n"</span> <span class='layout'>)</span>
<a name="line-430"></a> <span class='varid'>formatTitle</span> <span class='varid'>str</span>
<a name="line-431"></a> <span class='keyglyph'>=</span> <span class='str'>"\n"</span> <span class='varop'>++</span> <span class='varid'>headline</span> <span class='varop'>++</span> <span class='str'>"\n"</span> <span class='varop'>++</span> <span class='varid'>underline</span> <span class='varop'>++</span> <span class='str'>"\n\n"</span>
<a name="line-432"></a> <span class='keyword'>where</span>
<a name="line-433"></a> <span class='varid'>headline</span> <span class='keyglyph'>=</span> <span class='str'>"content of: "</span> <span class='varop'>++</span> <span class='varid'>str</span>
<a name="line-434"></a> <span class='varid'>underline</span> <span class='keyglyph'>=</span> <span class='varid'>map</span> <span class='layout'>(</span><span class='varid'>const</span> <span class='chr'>'='</span><span class='layout'>)</span> <span class='varid'>headline</span>
<a name="line-435"></a>
<a name="line-436"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-437"></a>
<a name="line-438"></a><a name="removeComment'"></a><span class='definition'>removeComment'</span> <span class='keyglyph'>::</span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-439"></a><span class='definition'>removeComment'</span> <span class='keyglyph'>=</span> <span class='varid'>none</span> <span class='varop'>`when`</span> <span class='varid'>isCmt</span>
<a name="line-440"></a>
<a name="line-441"></a><span class='comment'>-- |</span>
<a name="line-442"></a><span class='comment'>-- remove Comments: @none `when` isCmt@</span>
<a name="line-443"></a>
<a name="line-444"></a><a name="removeComment"></a><span class='definition'>removeComment</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-445"></a><span class='definition'>removeComment</span> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span> <span class='varid'>removeComment'</span>
<a name="line-446"></a>
<a name="line-447"></a><span class='comment'>-- |</span>
<a name="line-448"></a><span class='comment'>-- remove all comments recursively</span>
<a name="line-449"></a>
<a name="line-450"></a><a name="removeAllComment"></a><span class='definition'>removeAllComment</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-451"></a><span class='definition'>removeAllComment</span> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span> <span class='varid'>processBottomUp</span> <span class='varid'>removeComment'</span>
<a name="line-452"></a>
<a name="line-453"></a><span class='comment'>-- ----------</span>
<a name="line-454"></a>
<a name="line-455"></a><a name="removeWhiteSpace'"></a><span class='definition'>removeWhiteSpace'</span> <span class='keyglyph'>::</span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-456"></a><span class='definition'>removeWhiteSpace'</span> <span class='keyglyph'>=</span> <span class='varid'>none</span> <span class='varop'>`when`</span> <span class='varid'>isWhiteSpace</span>
<a name="line-457"></a>
<a name="line-458"></a><span class='comment'>-- |</span>
<a name="line-459"></a><span class='comment'>-- simple filter for removing whitespace.</span>
<a name="line-460"></a><span class='comment'>--</span>
<a name="line-461"></a><span class='comment'>-- no check on sigificant whitespace, e.g. in HTML \<pre\>-elements, is done.</span>
<a name="line-462"></a><span class='comment'>--</span>
<a name="line-463"></a><span class='comment'>--</span>
<a name="line-464"></a><span class='comment'>-- see also : 'removeAllWhiteSpace', 'removeDocWhiteSpace'</span>
<a name="line-465"></a>
<a name="line-466"></a><a name="removeWhiteSpace"></a><span class='definition'>removeWhiteSpace</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-467"></a><span class='definition'>removeWhiteSpace</span> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span> <span class='varid'>removeWhiteSpace'</span>
<a name="line-468"></a>
<a name="line-469"></a><span class='comment'>-- |</span>
<a name="line-470"></a><span class='comment'>-- simple recursive filter for removing all whitespace.</span>
<a name="line-471"></a><span class='comment'>--</span>
<a name="line-472"></a><span class='comment'>-- removes all text nodes in a tree that consist only of whitespace.</span>
<a name="line-473"></a><span class='comment'>--</span>
<a name="line-474"></a><span class='comment'>--</span>
<a name="line-475"></a><span class='comment'>-- see also : 'removeWhiteSpace', 'removeDocWhiteSpace'</span>
<a name="line-476"></a>
<a name="line-477"></a><a name="removeAllWhiteSpace"></a><span class='definition'>removeAllWhiteSpace</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-478"></a><span class='definition'>removeAllWhiteSpace</span> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span> <span class='varid'>processBottomUp</span> <span class='varid'>removeWhiteSpace'</span>
<a name="line-479"></a>
<a name="line-480"></a><span class='comment'>-- |</span>
<a name="line-481"></a><span class='comment'>-- filter for removing all not significant whitespace.</span>
<a name="line-482"></a><span class='comment'>--</span>
<a name="line-483"></a><span class='comment'>-- the tree traversed for removing whitespace between elements,</span>
<a name="line-484"></a><span class='comment'>-- that was inserted for indentation and readability.</span>
<a name="line-485"></a><span class='comment'>-- whitespace is only removed at places, where it's not significat</span>
<a name="line-486"></a><span class='comment'>-- preserving whitespace may be controlled in a document tree</span>
<a name="line-487"></a><span class='comment'>-- by a tag attribute @xml:space@</span>
<a name="line-488"></a><span class='comment'>--</span>
<a name="line-489"></a><span class='comment'>-- allowed values for this attribute are @default | preserve@</span>
<a name="line-490"></a><span class='comment'>--</span>
<a name="line-491"></a><span class='comment'>-- input is root node of the document to be cleaned up,</span>
<a name="line-492"></a><span class='comment'>-- output the semantically equivalent simplified tree</span>
<a name="line-493"></a><span class='comment'>--</span>
<a name="line-494"></a><span class='comment'>--</span>
<a name="line-495"></a><span class='comment'>-- see also : 'indentDoc', 'removeAllWhiteSpace'</span>
<a name="line-496"></a>
<a name="line-497"></a><a name="removeDocWhiteSpace"></a><span class='definition'>removeDocWhiteSpace</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-498"></a><span class='definition'>removeDocWhiteSpace</span> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span> <span class='varid'>removeRootWhiteSpace</span>
<a name="line-499"></a>
<a name="line-500"></a>
<a name="line-501"></a><a name="removeRootWhiteSpace"></a><span class='definition'>removeRootWhiteSpace</span> <span class='keyglyph'>::</span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-502"></a><span class='definition'>removeRootWhiteSpace</span>
<a name="line-503"></a> <span class='keyglyph'>=</span> <span class='varid'>processChildren</span> <span class='varid'>processRootElement</span>
<a name="line-504"></a> <span class='varop'>`when`</span>
<a name="line-505"></a> <span class='varid'>isRoot</span>
<a name="line-506"></a> <span class='keyword'>where</span>
<a name="line-507"></a> <span class='varid'>processRootElement</span> <span class='keyglyph'>::</span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-508"></a> <span class='varid'>processRootElement</span>
<a name="line-509"></a> <span class='keyglyph'>=</span> <span class='varid'>removeWhiteSpace</span> <span class='varop'>>>></span> <span class='varid'>processChild</span>
<a name="line-510"></a> <span class='keyword'>where</span>
<a name="line-511"></a> <span class='varid'>processChild</span>
<a name="line-512"></a> <span class='keyglyph'>=</span> <span class='varid'>choiceA</span> <span class='keyglyph'>[</span> <span class='varid'>isDTD</span>
<a name="line-513"></a> <span class='conop'>:-></span> <span class='varid'>removeAllWhiteSpace</span> <span class='comment'>-- whitespace in DTD is redundant</span>
<a name="line-514"></a> <span class='layout'>,</span> <span class='varid'>this</span>
<a name="line-515"></a> <span class='conop'>:-></span> <span class='varid'>replaceChildren</span> <span class='layout'>(</span> <span class='varid'>getChildren</span>
<a name="line-516"></a> <span class='varop'>>>.</span> <span class='varid'>indentTrees</span> <span class='varid'>insertNothing</span> <span class='conid'>False</span> <span class='num'>1</span>
<a name="line-517"></a> <span class='layout'>)</span>
<a name="line-518"></a> <span class='keyglyph'>]</span>
<a name="line-519"></a>
<a name="line-520"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-521"></a>
<a name="line-522"></a><span class='comment'>-- |</span>
<a name="line-523"></a><span class='comment'>-- filter for indenting a document tree for pretty printing.</span>
<a name="line-524"></a><span class='comment'>--</span>
<a name="line-525"></a><span class='comment'>-- the tree is traversed for inserting whitespace for tag indentation.</span>
<a name="line-526"></a><span class='comment'>--</span>
<a name="line-527"></a><span class='comment'>-- whitespace is only inserted or changed at places, where it isn't significant,</span>
<a name="line-528"></a><span class='comment'>-- is's not inserted between tags and text containing non whitespace chars.</span>
<a name="line-529"></a><span class='comment'>--</span>
<a name="line-530"></a><span class='comment'>-- whitespace is only inserted or changed at places, where it's not significant.</span>
<a name="line-531"></a><span class='comment'>-- preserving whitespace may be controlled in a document tree</span>
<a name="line-532"></a><span class='comment'>-- by a tag attribute @xml:space@</span>
<a name="line-533"></a><span class='comment'>--</span>
<a name="line-534"></a><span class='comment'>-- allowed values for this attribute are @default | preserve@.</span>
<a name="line-535"></a><span class='comment'>--</span>
<a name="line-536"></a><span class='comment'>-- input is a complete document tree or a document fragment</span>
<a name="line-537"></a><span class='comment'>-- result is the semantically equivalent formatted tree.</span>
<a name="line-538"></a><span class='comment'>--</span>
<a name="line-539"></a><span class='comment'>--</span>
<a name="line-540"></a><span class='comment'>-- see also : 'removeDocWhiteSpace'</span>
<a name="line-541"></a>
<a name="line-542"></a><a name="indentDoc"></a><span class='definition'>indentDoc</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-543"></a><span class='definition'>indentDoc</span> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span>
<a name="line-544"></a> <span class='layout'>(</span> <span class='layout'>(</span> <span class='varid'>isRoot</span> <span class='varop'>`guards`</span> <span class='varid'>indentRoot</span> <span class='layout'>)</span>
<a name="line-545"></a> <span class='varop'>`orElse`</span>
<a name="line-546"></a> <span class='layout'>(</span><span class='varid'>root</span> <span class='conid'>[]</span> <span class='keyglyph'>[</span><span class='varid'>this</span><span class='keyglyph'>]</span> <span class='varop'>>>></span> <span class='varid'>indentRoot</span> <span class='varop'>>>></span> <span class='varid'>getChildren</span><span class='layout'>)</span>
<a name="line-547"></a> <span class='layout'>)</span>
<a name="line-548"></a>
<a name="line-549"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-550"></a>
<a name="line-551"></a><a name="indentRoot"></a><span class='definition'>indentRoot</span> <span class='keyglyph'>::</span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-552"></a><span class='definition'>indentRoot</span> <span class='keyglyph'>=</span> <span class='varid'>processChildren</span> <span class='varid'>indentRootChildren</span>
<a name="line-553"></a> <span class='keyword'>where</span>
<a name="line-554"></a> <span class='varid'>indentRootChildren</span>
<a name="line-555"></a> <span class='keyglyph'>=</span> <span class='varid'>removeText</span> <span class='varop'>>>></span> <span class='varid'>indentChild</span> <span class='varop'>>>></span> <span class='varid'>insertNL</span>
<a name="line-556"></a> <span class='keyword'>where</span>
<a name="line-557"></a> <span class='varid'>removeText</span> <span class='keyglyph'>=</span> <span class='varid'>none</span> <span class='varop'>`when`</span> <span class='varid'>isText</span>
<a name="line-558"></a> <span class='varid'>insertNL</span> <span class='keyglyph'>=</span> <span class='varid'>this</span> <span class='varop'><+></span> <span class='varid'>txt</span> <span class='str'>"\n"</span>
<a name="line-559"></a> <span class='varid'>indentChild</span> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='varid'>replaceChildren</span>
<a name="line-560"></a> <span class='layout'>(</span> <span class='varid'>getChildren</span>
<a name="line-561"></a> <span class='varop'>>>.</span>
<a name="line-562"></a> <span class='varid'>indentTrees</span> <span class='layout'>(</span><span class='varid'>insertIndentation</span> <span class='num'>2</span><span class='layout'>)</span> <span class='conid'>False</span> <span class='num'>1</span>
<a name="line-563"></a> <span class='layout'>)</span>
<a name="line-564"></a> <span class='varop'>`whenNot`</span> <span class='varid'>isDTD</span>
<a name="line-565"></a> <span class='layout'>)</span>
<a name="line-566"></a>
<a name="line-567"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-568"></a><span class='comment'>--</span>
<a name="line-569"></a><span class='comment'>-- copied from EditFilter and rewritten for arrows</span>
<a name="line-570"></a><span class='comment'>-- to remove dependency to the filter module</span>
<a name="line-571"></a>
<a name="line-572"></a><a name="indentTrees"></a><span class='definition'>indentTrees</span> <span class='keyglyph'>::</span> <span class='layout'>(</span><span class='conid'>Int</span> <span class='keyglyph'>-></span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span><span class='layout'>)</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span> <span class='keyglyph'>-></span> <span class='conid'>Int</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTrees</span>
<a name="line-573"></a><span class='definition'>indentTrees</span> <span class='keyword'>_</span> <span class='keyword'>_</span> <span class='keyword'>_</span> <span class='conid'>[]</span>
<a name="line-574"></a> <span class='keyglyph'>=</span> <span class='conid'>[]</span>
<a name="line-575"></a><span class='definition'>indentTrees</span> <span class='varid'>indentFilter</span> <span class='varid'>preserveSpace</span> <span class='varid'>level</span> <span class='varid'>ts</span>
<a name="line-576"></a> <span class='keyglyph'>=</span> <span class='varid'>runLAs</span> <span class='varid'>lsf</span> <span class='varid'>ls</span>
<a name="line-577"></a> <span class='varop'>++</span>
<a name="line-578"></a> <span class='varid'>indentRest</span> <span class='varid'>rs</span>
<a name="line-579"></a> <span class='keyword'>where</span>
<a name="line-580"></a> <span class='varid'>runLAs</span> <span class='varid'>f</span> <span class='varid'>l</span>
<a name="line-581"></a> <span class='keyglyph'>=</span> <span class='varid'>runLA</span> <span class='layout'>(</span><span class='varid'>constL</span> <span class='varid'>l</span> <span class='varop'>>>></span> <span class='varid'>f</span><span class='layout'>)</span> <span class='varid'>undefined</span>
<a name="line-582"></a>
<a name="line-583"></a> <span class='layout'>(</span><span class='varid'>ls</span><span class='layout'>,</span> <span class='varid'>rs</span><span class='layout'>)</span>
<a name="line-584"></a> <span class='keyglyph'>=</span> <span class='varid'>break</span> <span class='conid'>XN</span><span class='varop'>.</span><span class='varid'>isElem</span> <span class='varid'>ts</span>
<a name="line-585"></a>
<a name="line-586"></a> <span class='varid'>isSignificant</span> <span class='keyglyph'>::</span> <span class='conid'>Bool</span>
<a name="line-587"></a> <span class='varid'>isSignificant</span>
<a name="line-588"></a> <span class='keyglyph'>=</span> <span class='varid'>preserveSpace</span>
<a name="line-589"></a> <span class='varop'>||</span>
<a name="line-590"></a> <span class='layout'>(</span><span class='varid'>not</span> <span class='varop'>.</span> <span class='varid'>null</span> <span class='varop'>.</span> <span class='varid'>runLAs</span> <span class='varid'>isSignificantPart</span><span class='layout'>)</span> <span class='varid'>ls</span>
<a name="line-591"></a>
<a name="line-592"></a> <span class='varid'>isSignificantPart</span> <span class='keyglyph'>::</span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-593"></a> <span class='varid'>isSignificantPart</span>
<a name="line-594"></a> <span class='keyglyph'>=</span> <span class='varid'>catA</span>
<a name="line-595"></a> <span class='keyglyph'>[</span> <span class='varid'>isText</span> <span class='varop'>`guards`</span> <span class='varid'>neg</span> <span class='varid'>isWhiteSpace</span>
<a name="line-596"></a> <span class='layout'>,</span> <span class='varid'>isCdata</span>
<a name="line-597"></a> <span class='layout'>,</span> <span class='varid'>isCharRef</span>
<a name="line-598"></a> <span class='layout'>,</span> <span class='varid'>isEntityRef</span>
<a name="line-599"></a> <span class='keyglyph'>]</span>
<a name="line-600"></a>
<a name="line-601"></a> <span class='varid'>lsf</span> <span class='keyglyph'>::</span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-602"></a> <span class='varid'>lsf</span>
<a name="line-603"></a> <span class='keyglyph'>|</span> <span class='varid'>isSignificant</span>
<a name="line-604"></a> <span class='keyglyph'>=</span> <span class='varid'>this</span>
<a name="line-605"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span>
<a name="line-606"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span><span class='varid'>none</span> <span class='varop'>`when`</span> <span class='varid'>isWhiteSpace</span><span class='layout'>)</span>
<a name="line-607"></a> <span class='varop'>>>></span>
<a name="line-608"></a> <span class='layout'>(</span><span class='varid'>indentFilter</span> <span class='varid'>level</span> <span class='varop'><+></span> <span class='varid'>this</span><span class='layout'>)</span>
<a name="line-609"></a>
<a name="line-610"></a> <span class='varid'>indentRest</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTrees</span>
<a name="line-611"></a> <span class='varid'>indentRest</span> <span class='conid'>[]</span>
<a name="line-612"></a> <span class='keyglyph'>|</span> <span class='varid'>isSignificant</span>
<a name="line-613"></a> <span class='keyglyph'>=</span> <span class='conid'>[]</span>
<a name="line-614"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span>
<a name="line-615"></a> <span class='keyglyph'>=</span> <span class='varid'>runLA</span> <span class='layout'>(</span><span class='varid'>indentFilter</span> <span class='layout'>(</span><span class='varid'>level</span> <span class='comment'>-</span> <span class='num'>1</span><span class='layout'>)</span><span class='layout'>)</span> <span class='varid'>undefined</span>
<a name="line-616"></a>
<a name="line-617"></a> <span class='varid'>indentRest</span> <span class='layout'>(</span><span class='varid'>t'</span><span class='conop'>:</span><span class='varid'>ts'</span><span class='layout'>)</span>
<a name="line-618"></a> <span class='keyglyph'>=</span> <span class='varid'>runLA</span> <span class='layout'>(</span> <span class='layout'>(</span> <span class='varid'>indentElem</span>
<a name="line-619"></a> <span class='varop'>>>></span>
<a name="line-620"></a> <span class='varid'>lsf</span>
<a name="line-621"></a> <span class='layout'>)</span>
<a name="line-622"></a> <span class='varop'>`when`</span> <span class='varid'>isElem</span>
<a name="line-623"></a> <span class='layout'>)</span> <span class='varid'>t'</span>
<a name="line-624"></a> <span class='varop'>++</span>
<a name="line-625"></a> <span class='layout'>(</span> <span class='keyword'>if</span> <span class='varid'>null</span> <span class='varid'>ts'</span>
<a name="line-626"></a> <span class='keyword'>then</span> <span class='varid'>indentRest</span>
<a name="line-627"></a> <span class='keyword'>else</span> <span class='varid'>indentTrees</span> <span class='varid'>indentFilter</span> <span class='varid'>preserveSpace</span> <span class='varid'>level</span>
<a name="line-628"></a> <span class='layout'>)</span> <span class='varid'>ts'</span>
<a name="line-629"></a> <span class='keyword'>where</span>
<a name="line-630"></a> <span class='varid'>indentElem</span>
<a name="line-631"></a> <span class='keyglyph'>=</span> <span class='varid'>replaceChildren</span> <span class='layout'>(</span> <span class='varid'>getChildren</span>
<a name="line-632"></a> <span class='varop'>>>.</span>
<a name="line-633"></a> <span class='varid'>indentChildren</span>
<a name="line-634"></a> <span class='layout'>)</span>
<a name="line-635"></a>
<a name="line-636"></a> <span class='varid'>xmlSpaceAttrValue</span> <span class='keyglyph'>::</span> <span class='conid'>String</span>
<a name="line-637"></a> <span class='varid'>xmlSpaceAttrValue</span>
<a name="line-638"></a> <span class='keyglyph'>=</span> <span class='varid'>concat</span> <span class='varop'>.</span> <span class='varid'>runLA</span> <span class='layout'>(</span><span class='varid'>getAttrValue</span> <span class='str'>"xml:space"</span><span class='layout'>)</span> <span class='varop'>$</span> <span class='varid'>t'</span>
<a name="line-639"></a>
<a name="line-640"></a> <span class='varid'>preserveSpace'</span> <span class='keyglyph'>::</span> <span class='conid'>Bool</span>
<a name="line-641"></a> <span class='varid'>preserveSpace'</span>
<a name="line-642"></a> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='varid'>fromMaybe</span> <span class='varid'>preserveSpace</span>
<a name="line-643"></a> <span class='varop'>.</span>
<a name="line-644"></a> <span class='varid'>lookup</span> <span class='varid'>xmlSpaceAttrValue</span>
<a name="line-645"></a> <span class='layout'>)</span> <span class='keyglyph'>[</span> <span class='layout'>(</span><span class='str'>"preserve"</span><span class='layout'>,</span> <span class='conid'>True</span><span class='layout'>)</span>
<a name="line-646"></a> <span class='layout'>,</span> <span class='layout'>(</span><span class='str'>"default"</span><span class='layout'>,</span> <span class='conid'>False</span><span class='layout'>)</span>
<a name="line-647"></a> <span class='keyglyph'>]</span>
<a name="line-648"></a>
<a name="line-649"></a> <span class='varid'>indentChildren</span> <span class='keyglyph'>::</span> <span class='conid'>XmlTrees</span> <span class='keyglyph'>-></span> <span class='conid'>XmlTrees</span>
<a name="line-650"></a> <span class='varid'>indentChildren</span> <span class='varid'>cs'</span>
<a name="line-651"></a> <span class='keyglyph'>|</span> <span class='varid'>all</span> <span class='layout'>(</span><span class='varid'>maybe</span> <span class='conid'>False</span> <span class='layout'>(</span><span class='varid'>all</span> <span class='varid'>isXmlSpaceChar</span><span class='layout'>)</span> <span class='varop'>.</span> <span class='conid'>XN</span><span class='varop'>.</span><span class='varid'>getText</span><span class='layout'>)</span> <span class='varid'>cs'</span>
<a name="line-652"></a> <span class='keyglyph'>=</span> <span class='conid'>[]</span>
<a name="line-653"></a> <span class='keyglyph'>|</span> <span class='varid'>otherwise</span>
<a name="line-654"></a> <span class='keyglyph'>=</span> <span class='varid'>indentTrees</span> <span class='varid'>indentFilter</span> <span class='varid'>preserveSpace'</span> <span class='layout'>(</span><span class='varid'>level</span> <span class='varop'>+</span> <span class='num'>1</span><span class='layout'>)</span> <span class='varid'>cs'</span>
<a name="line-655"></a>
<a name="line-656"></a>
<a name="line-657"></a><span class='comment'>-- filter for indenting elements</span>
<a name="line-658"></a>
<a name="line-659"></a><a name="insertIndentation"></a><span class='definition'>insertIndentation</span> <span class='keyglyph'>::</span> <span class='conid'>Int</span> <span class='keyglyph'>-></span> <span class='conid'>Int</span> <span class='keyglyph'>-></span> <span class='conid'>LA</span> <span class='varid'>a</span> <span class='conid'>XmlTree</span>
<a name="line-660"></a><span class='definition'>insertIndentation</span> <span class='varid'>indentWidth</span> <span class='varid'>level</span>
<a name="line-661"></a> <span class='keyglyph'>=</span> <span class='varid'>txt</span> <span class='layout'>(</span><span class='chr'>'\n'</span> <span class='conop'>:</span> <span class='varid'>replicate</span> <span class='layout'>(</span><span class='varid'>level</span> <span class='varop'>*</span> <span class='varid'>indentWidth</span><span class='layout'>)</span> <span class='chr'>' '</span><span class='layout'>)</span>
<a name="line-662"></a>
<a name="line-663"></a><span class='comment'>-- filter for removing all whitespace</span>
<a name="line-664"></a>
<a name="line-665"></a><a name="insertNothing"></a><span class='definition'>insertNothing</span> <span class='keyglyph'>::</span> <span class='conid'>Int</span> <span class='keyglyph'>-></span> <span class='conid'>LA</span> <span class='varid'>a</span> <span class='conid'>XmlTree</span>
<a name="line-666"></a><span class='definition'>insertNothing</span> <span class='keyword'>_</span> <span class='keyglyph'>=</span> <span class='varid'>none</span>
<a name="line-667"></a>
<a name="line-668"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-669"></a>
<a name="line-670"></a><a name="transfCdata'"></a><span class='definition'>transfCdata'</span> <span class='keyglyph'>::</span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-671"></a><span class='definition'>transfCdata'</span> <span class='keyglyph'>=</span> <span class='layout'>(</span><span class='varid'>getCdata</span> <span class='varop'>>>></span> <span class='varid'>mkText</span><span class='layout'>)</span> <span class='varop'>`when`</span> <span class='varid'>isCdata</span>
<a name="line-672"></a>
<a name="line-673"></a><span class='comment'>-- |</span>
<a name="line-674"></a><span class='comment'>-- converts a CDATA section node into a normal text node</span>
<a name="line-675"></a>
<a name="line-676"></a><a name="transfCdata"></a><span class='definition'>transfCdata</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-677"></a><span class='definition'>transfCdata</span> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span>
<a name="line-678"></a> <span class='varid'>transfCdata'</span>
<a name="line-679"></a>
<a name="line-680"></a><span class='comment'>-- |</span>
<a name="line-681"></a><span class='comment'>-- converts CDATA sections in whole document tree into normal text nodes</span>
<a name="line-682"></a>
<a name="line-683"></a><a name="transfAllCdata"></a><span class='definition'>transfAllCdata</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-684"></a><span class='definition'>transfAllCdata</span> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span>
<a name="line-685"></a> <span class='varid'>processBottomUp</span> <span class='varid'>transfCdata'</span>
<a name="line-686"></a>
<a name="line-687"></a><span class='comment'>--</span>
<a name="line-688"></a>
<a name="line-689"></a><a name="transfCharRef'"></a><span class='definition'>transfCharRef'</span> <span class='keyglyph'>::</span> <span class='conid'>LA</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-690"></a><span class='definition'>transfCharRef'</span> <span class='keyglyph'>=</span> <span class='layout'>(</span> <span class='varid'>getCharRef</span> <span class='varop'>>>></span> <span class='varid'>arr</span> <span class='layout'>(</span><span class='keyglyph'>\</span> <span class='varid'>i</span> <span class='keyglyph'>-></span> <span class='keyglyph'>[</span><span class='varid'>toEnum</span> <span class='varid'>i</span><span class='keyglyph'>]</span><span class='layout'>)</span> <span class='varop'>>>></span> <span class='varid'>mkText</span> <span class='layout'>)</span>
<a name="line-691"></a> <span class='varop'>`when`</span>
<a name="line-692"></a> <span class='varid'>isCharRef</span>
<a name="line-693"></a>
<a name="line-694"></a><span class='comment'>-- |</span>
<a name="line-695"></a><span class='comment'>-- converts character references to normal text</span>
<a name="line-696"></a>
<a name="line-697"></a><a name="transfCharRef"></a><span class='definition'>transfCharRef</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-698"></a><span class='definition'>transfCharRef</span> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span>
<a name="line-699"></a> <span class='varid'>transfCharRef'</span>
<a name="line-700"></a>
<a name="line-701"></a><span class='comment'>-- |</span>
<a name="line-702"></a><span class='comment'>-- recursively converts all character references to normal text</span>
<a name="line-703"></a>
<a name="line-704"></a><a name="transfAllCharRef"></a><span class='definition'>transfAllCharRef</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-705"></a><span class='definition'>transfAllCharRef</span> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span>
<a name="line-706"></a> <span class='varid'>processBottomUp</span> <span class='varid'>transfCharRef'</span>
<a name="line-707"></a>
<a name="line-708"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-709"></a>
<a name="line-710"></a><a name="hasXmlPi"></a><span class='definition'>hasXmlPi</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-711"></a><span class='definition'>hasXmlPi</span>
<a name="line-712"></a> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span>
<a name="line-713"></a> <span class='layout'>(</span> <span class='varid'>getChildren</span>
<a name="line-714"></a> <span class='varop'>>>></span>
<a name="line-715"></a> <span class='varid'>isPi</span>
<a name="line-716"></a> <span class='varop'>>>></span>
<a name="line-717"></a> <span class='varid'>hasName</span> <span class='varid'>t_xml</span>
<a name="line-718"></a> <span class='layout'>)</span>
<a name="line-719"></a>
<a name="line-720"></a><span class='comment'>-- | add an \<?xml version=\"1.0\"?\> processing instruction</span>
<a name="line-721"></a><span class='comment'>-- if it's not already there</span>
<a name="line-722"></a>
<a name="line-723"></a><a name="addXmlPi"></a><span class='definition'>addXmlPi</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-724"></a><span class='definition'>addXmlPi</span>
<a name="line-725"></a> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span>
<a name="line-726"></a> <span class='layout'>(</span> <span class='varid'>insertChildrenAt</span> <span class='num'>0</span> <span class='layout'>(</span> <span class='layout'>(</span> <span class='varid'>mkPi</span> <span class='layout'>(</span><span class='varid'>mkSNsName</span> <span class='varid'>t_xml</span><span class='layout'>)</span> <span class='varid'>none</span>
<a name="line-727"></a> <span class='varop'>>>></span>
<a name="line-728"></a> <span class='varid'>addAttr</span> <span class='varid'>a_version</span> <span class='str'>"1.0"</span>
<a name="line-729"></a> <span class='layout'>)</span>
<a name="line-730"></a> <span class='varop'><+></span>
<a name="line-731"></a> <span class='varid'>txt</span> <span class='str'>"\n"</span>
<a name="line-732"></a> <span class='layout'>)</span>
<a name="line-733"></a> <span class='varop'>`whenNot`</span>
<a name="line-734"></a> <span class='varid'>hasXmlPi</span>
<a name="line-735"></a> <span class='layout'>)</span>
<a name="line-736"></a>
<a name="line-737"></a><span class='comment'>-- | add an encoding spec to the \<?xml version=\"1.0\"?\> processing instruction</span>
<a name="line-738"></a>
<a name="line-739"></a><a name="addXmlPiEncoding"></a><span class='definition'>addXmlPiEncoding</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-740"></a><span class='definition'>addXmlPiEncoding</span> <span class='varid'>enc</span>
<a name="line-741"></a> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span>
<a name="line-742"></a> <span class='varid'>processChildren</span> <span class='layout'>(</span> <span class='varid'>addAttr</span> <span class='varid'>a_encoding</span> <span class='varid'>enc</span>
<a name="line-743"></a> <span class='varop'>`when`</span>
<a name="line-744"></a> <span class='layout'>(</span> <span class='varid'>isPi</span> <span class='varop'>>>></span> <span class='varid'>hasName</span> <span class='varid'>t_xml</span> <span class='layout'>)</span>
<a name="line-745"></a> <span class='layout'>)</span>
<a name="line-746"></a>
<a name="line-747"></a><span class='comment'>-- | add an XHTML strict doctype declaration to a document</span>
<a name="line-748"></a>
<a name="line-749"></a><a name="addXHtmlDoctypeStrict"></a><span class='definition'>addXHtmlDoctypeStrict</span>
<a name="line-750"></a> <span class='layout'>,</span> <span class='varid'>addXHtmlDoctypeTransitional</span>
<a name="line-751"></a> <span class='layout'>,</span> <span class='varid'>addXHtmlDoctypeFrameset</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-752"></a>
<a name="line-753"></a><span class='comment'>-- | add an XHTML strict doctype declaration to a document</span>
<a name="line-754"></a>
<a name="line-755"></a><span class='definition'>addXHtmlDoctypeStrict</span>
<a name="line-756"></a> <span class='keyglyph'>=</span> <span class='varid'>addDoctypeDecl</span> <span class='str'>"html"</span> <span class='str'>"-//W3C//DTD XHTML 1.0 Strict//EN"</span> <span class='str'>"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"</span>
<a name="line-757"></a>
<a name="line-758"></a><span class='comment'>-- | add an XHTML transitional doctype declaration to a document</span>
<a name="line-759"></a>
<a name="line-760"></a><a name="addXHtmlDoctypeTransitional"></a><span class='definition'>addXHtmlDoctypeTransitional</span>
<a name="line-761"></a> <span class='keyglyph'>=</span> <span class='varid'>addDoctypeDecl</span> <span class='str'>"html"</span> <span class='str'>"-//W3C//DTD XHTML 1.0 Transitional//EN"</span> <span class='str'>"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"</span>
<a name="line-762"></a>
<a name="line-763"></a><span class='comment'>-- | add an XHTML frameset doctype declaration to a document</span>
<a name="line-764"></a>
<a name="line-765"></a><a name="addXHtmlDoctypeFrameset"></a><span class='definition'>addXHtmlDoctypeFrameset</span>
<a name="line-766"></a> <span class='keyglyph'>=</span> <span class='varid'>addDoctypeDecl</span> <span class='str'>"html"</span> <span class='str'>"-//W3C//DTD XHTML 1.0 Frameset//EN"</span> <span class='str'>"http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd"</span>
<a name="line-767"></a>
<a name="line-768"></a><span class='comment'>-- | add a doctype declaration to a document</span>
<a name="line-769"></a><span class='comment'>--</span>
<a name="line-770"></a><span class='comment'>-- The arguments are the root element name, the PUBLIC id and the SYSTEM id</span>
<a name="line-771"></a>
<a name="line-772"></a><a name="addDoctypeDecl"></a><span class='definition'>addDoctypeDecl</span> <span class='keyglyph'>::</span> <span class='conid'>ArrowXml</span> <span class='varid'>a</span> <span class='keyglyph'>=></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='varid'>a</span> <span class='conid'>XmlTree</span> <span class='conid'>XmlTree</span>
<a name="line-773"></a><span class='definition'>addDoctypeDecl</span> <span class='varid'>rootElem</span> <span class='varid'>public</span> <span class='varid'>system</span>
<a name="line-774"></a> <span class='keyglyph'>=</span> <span class='varid'>fromLA</span> <span class='varop'>$</span>
<a name="line-775"></a> <span class='varid'>replaceChildren</span>
<a name="line-776"></a> <span class='layout'>(</span> <span class='varid'>mkDTDDoctype</span> <span class='layout'>(</span> <span class='layout'>(</span> <span class='keyword'>if</span> <span class='varid'>null</span> <span class='varid'>public</span> <span class='keyword'>then</span> <span class='varid'>id</span> <span class='keyword'>else</span> <span class='layout'>(</span> <span class='layout'>(</span><span class='varid'>k_public</span><span class='layout'>,</span> <span class='varid'>public</span><span class='layout'>)</span> <span class='conop'>:</span> <span class='layout'>)</span> <span class='layout'>)</span>
<a name="line-777"></a> <span class='varop'>.</span>
<a name="line-778"></a> <span class='layout'>(</span> <span class='keyword'>if</span> <span class='varid'>null</span> <span class='varid'>system</span> <span class='keyword'>then</span> <span class='varid'>id</span> <span class='keyword'>else</span> <span class='layout'>(</span> <span class='layout'>(</span><span class='varid'>k_system</span><span class='layout'>,</span> <span class='varid'>system</span><span class='layout'>)</span> <span class='conop'>:</span> <span class='layout'>)</span> <span class='layout'>)</span>
<a name="line-779"></a> <span class='varop'>$</span> <span class='keyglyph'>[</span> <span class='layout'>(</span><span class='varid'>a_name</span><span class='layout'>,</span> <span class='varid'>rootElem</span><span class='layout'>)</span> <span class='keyglyph'>]</span>
<a name="line-780"></a> <span class='layout'>)</span> <span class='varid'>none</span>
<a name="line-781"></a> <span class='varop'><+></span>
<a name="line-782"></a> <span class='varid'>txt</span> <span class='str'>"\n"</span>
<a name="line-783"></a> <span class='varop'><+></span>
<a name="line-784"></a> <span class='varid'>getChildren</span>
<a name="line-785"></a> <span class='layout'>)</span>
<a name="line-786"></a>
<a name="line-787"></a><span class='comment'>-- ------------------------------------------------------------</span>
</pre></body>
</html>