% $Id: tex4ht-docbook-xtpipes.tex 740 2020-06-13 22:35:32Z karl $
% htlatex tex4ht-docbook-xtpipes "xhtml,next,3" "" "-d./"
%
% Copyright 2009-2020 TeX Users Group
% Copyright 2000-2009 Eitan M. Gurari
% Released under LPPL 1.3c+.
% See tex4ht-cpright.tex for license text.

\documentclass{article}
   \Configure{ProTex}{log,<<<>>>,title,list,`,[[]]}
\begin{document}

\input{common}
\input{tex4ht-cpright}
\input{tex4ht-dir}



%%%%%%%%%%%%%%%%%%
\part{Post Processing for DocBook Output Mode}
%%%%%%%%%%%%%%%%%%


%%%%%%%%%%%%%%%%%%
\section{Outline}
%%%%%%%%%%%%%%%%%%

\AtEndDocument{\OutputCodE\<docbook.4xt\>}

\Needs{"xmllint --valid --noout docbook.4xt"}

\<docbook.4xt\><<<
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE xtpipes SYSTEM "xtpipes.dtd" >
<!-- docbook.4xt (`version), generated from `jobname.tex
    Copyright (C) 2009-2010 TeX Users Group
    Copyright (C) `CopyYear.2008. Eitan M. Gurari
`<TeX4ht copyright`> -->
<xtpipes preamble="yes" signature="docbook.4xt (`version)">
  <sax content-handler="xtpipes.util.ScriptsManager"
       lexical-handler="xtpipes.util.ScriptsManagerLH" >
    `<db links`>
    `<tabular hor lines`>
    `<trim() para`>
  </sax>
</xtpipes>
>>>


\AtEndDocument{\OutputCodE\<DbUtilities.java\>}

\ifdojava
 \Needs{"
   javac DbUtilities.java -d \XTPIPES
"}
\fi

\<DbUtilities.java\><<<
package tex4ht;
/* DbUtilities.java (`version), generated from `jobname.tex
  Copyright (C) 2009-2010 TeX Users Group
  Copyright (C) `CopyYear.2008. Eitan M. Gurari
`<TeX4ht copyright`> */

import org.w3c.dom.*;
public class DbUtilities {
 `<static void cline(dom)`>
 `<static void para(dom)`>
}
>>>


%%%%%%%%%%%%%%%%%%
\section{Trim Spaces of Paragraphs}
%%%%%%%%%%%%%%%%%%

\<trim() para\><<<
<script element="para" >
  <dom name="." xml="." method="para" class="tex4ht.DbUtilities" />
</script>
>>>


\<static void para(dom)\><<<
public static void para(Node dom) {
  Node pNode = dom.getFirstChild();
  if( pNode.hasChildNodes() ){
     Node child = pNode.getFirstChild();
     if( child != null ){
        if(  (child.getNodeType() == Node.TEXT_NODE)
           &&
             ((Text) child).getWholeText().trim().equals("")
        ){
           pNode.removeChild( child );
  }  }  }
  if( pNode.hasChildNodes() ){
     Node child = pNode.getLastChild();
     if( child != null ){
        if(  (child.getNodeType() == Node.TEXT_NODE)
           &&
             ((Text) child).getWholeText().trim().equals("")
        ){
           pNode.removeChild( child );
  }  }  }
  if( pNode.hasChildNodes() ){
     Node child = pNode.getFirstChild();
     if(    (child != null)
         && (child.getNextSibling() == null)
         && (child.getNodeType() == Node.TEXT_NODE)
     ){
        String txt = ((Text) child).getWholeText();
        String trm = txt.trim();
        if( !trm.equals(txt) ){
           ((Text)child).replaceWholeText(trm);
  }  }  }
}
>>>



%%%%%%%%%%%%%%%%%%
\section{Title Elements}
%%%%%%%%%%%%%%%%%%



%%%%%%%%%%%%%%%%%%
\section{Internal Links}
%%%%%%%%%%%%%%%%%%


Anchor within the document should use

\begin{center}
 \verb+<link linkend="Ortsflaechen">...</link>+
\end{center}

without the `\verb+#+' character.
The ulink element is used for URLs.

\begin{center}
 \verb+<ulink url="http://...">...</ulink>+
\end{center}

\<db links\><<<
<script element="ulink" >
  <set name="ulink" >
     `<open xslt script`>
     `<ulink templates`>
     `<close xslt script`>
  </set>
  <xslt name="." xml="." xsl="ulink" />
</script>
>>>


\<ulink templates\><<<
<xsl:template match=" ulink[
  @url and starts-with( @url, '#')
]" >
  <link>
     <xsl:attribute name="linkend">
        <xsl:value-of select=" substring( @url, 2 )" />
     </xsl:attribute>
     <xsl:apply-templates select="*|text()|comment()" />
  </link>
</xsl:template>
>>>

%%%%%%%%%%%%%%%%%%
\section{tabular hor lines}
%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%
\subsection{Outline}
%%%%%%%%%%%%%


\<tabular hor lines\><<<
<script element="tbody" >
  <set name="dirt" >
     `<open xslt script`>
     `<tbody dirt templates`>
     `<close xslt script`>
  </set>
  <set name="tbody" >
     `<open xslt script`>
     `<tbody templates`>
     `<close xslt script`>
  </set>
  <xslt name="." xml="." xsl="tbody" />
  <xslt name="." xml="." xsl="dirt" />
  <dom name="." xml="." method="cline" class="tex4ht.DbUtilities" />
</script>
>>>






\<static void cline(dom)\><<<
public static void cline(Node dom) {
  Node row, entry, para, nextrow;
  Node node = dom.getFirstChild();
  if( node != null ){
     `<remove empty trailing rows`>
     `<merge cline rows into non-line rows`>
  }
}
>>>


\<remove empty trailing rows\><<<
row = node.getLastChild();
while(     (row != null)
       && ( (entry = row.getLastChild()) != null)
       && ( (para = entry.getFirstChild()) != null)
       && ( para.getNextSibling() == null)
       && ( para.getFirstChild() == null)
){
 node.removeChild(row);
 row = node.getLastChild();
}
>>>

The merging of rows deal with cases similar to the following one.


\begin{verbatim}
<row>
 <entry align="left">
   <para> 1</para>
 </entry>
 <entry align="left" nameend="3" namest="2">
   <para>2 to 3</para>
 </entry>
</row>
<row role="cline">
 <entry rowsep="0"/>
 <entry rowsep="1"/>
 <entry rowsep="1"/>
</row>
\end{verbatim}

\<merge cline rows into non-line rows\><<<
row = node.getFirstChild();
while( row != null ){
 if(    (row.getNodeType() == Node.ELEMENT_NODE)
     && ((Element) row).getAttribute("rowsep").equals("")
     && !((Element) row).getAttribute("role"  ).equals("cline")
     && ((nextrow = row.getNextSibling()) != null)
     && (nextrow.getNodeType() == Node.ELEMENT_NODE)
     && ((Element) nextrow).getAttribute("role"  ).equals("cline")
 ){
   `<boolean compatible = ...`>
   if( compatible ){
      `<row += nextrow`>
      node.removeChild(nextrow);
   }
 }
 row = row.getNextSibling();
}
>>>

\<boolean compatible = ...\><<<
boolean compatible = true;
Node entry1 = row.getFirstChild();
Node entry2 = nextrow.getFirstChild();
while( true ){
 if( (entry1 == null) || (entry2 == null) ){ break; }
 int range;
 try{
   range =
         Integer.parseInt( ((Element) entry1).getAttribute("nameend") )
         -
         Integer.parseInt( ((Element) entry1).getAttribute("namest") )
         +
         1;
 } catch( Exception e){ range = 1;}
 if( range > 1 ){
   String rowsep = ((Element) entry2).getAttribute("rowsep");
   while( --range > 0 ){
      entry2 = entry2.getNextSibling();
      if( entry2 == null ){
         compatible = false;
         break;
      }
      String value = ((Element) entry2).getAttribute("rowsep");
      if( !value.equals( rowsep ) ){
         compatible = false;
         break;
      }
   }
 }
 if( !compatible ){ break; }
 entry1 = entry1.getNextSibling();
 entry2 = entry2.getNextSibling();
}
>>>

\<row += nextrow\><<<
entry1 = row.getFirstChild();
entry2 = nextrow.getFirstChild();
while( true ){
 if( (entry1 == null) || (entry2 == null) ){ break; }
 int range;
 try{
   range =
         Integer.parseInt( ((Element) entry1).getAttribute("nameend") )
         -
         Integer.parseInt( ((Element) entry1).getAttribute("namest") )
         +
         1;
 } catch( Exception e){ range = 1;}
 ((Element) entry1).setAttribute(
                      "rowsep",
                      ((Element) entry2).getAttribute("rowsep") );
 while( --range > 0 ){
    entry2 = entry2.getNextSibling();
 }
 entry1 = entry1.getNextSibling();
 entry2 = entry2.getNextSibling();
}
>>>



%%%%%%%%%%%%%
\subsection{Dirt Lines}
%%%%%%%%%%%%%

Can they be removed earlier  at the latex pass?


\<tbody dirt templates\><<<
<xsl:template match=" row[
 (count(child::entry) = 1)
and
 ( normalize-space(child::entry[1]/child::para[1]/child::comment())
   = 'dirt'
 )
]">
</xsl:template>
>>>





%%%%%%%%%%%%%
\subsection{hline}
%%%%%%%%%%%%%



\<tbody templates\><<<
<xsl:template match=" row[ @role = 'hline' ]" />
>>>

\<tbody templates\><<<
<xsl:template match=" row[ @role = 'hline' ]" />
<xsl:template match=" row[
      following-sibling::*[1][ self::row[@role = 'hline'] ]
] ">
  <xsl:copy>
     <xsl:attribute name="rowsep">
        <xsl:text>1</xsl:text>
     </xsl:attribute>
     <xsl:apply-templates select="*|@*|text()|comment()" />
  </xsl:copy>
</xsl:template>
>>>

%%%%%%%%%%%%%
\subsection{cline}
%%%%%%%%%%%%%




\<tbody templates\><<<
<xsl:template match=" row[
    (@role = 'cline')
    and
    preceding-sibling::*[1]
                        [ self::row[ not(@role) ] ]
    and
    (   count(child::entry)
      = count(preceding-sibling::*[1]/child::entry))
]" />
<xsl:template match=" row[
      not(@role)
  and
      following-sibling::*[1][ self::row[@role = 'cline'] ]
  and
    (   count(child::entry)
      = count(following-sibling::*[1]/child::entry))
] ">
  <xsl:copy>
     <xsl:apply-templates select="@*" />
     <xsl:apply-templates select="*|text()|comment()" mode="cline" />
  </xsl:copy>
</xsl:template>
>>>

\<tbody templates\><<<
<xsl:template match=" text()|comment() " mode="cline">
  <xsl:copy>
     <xsl:apply-templates select="*|@*|text()|comment()"  />
  </xsl:copy>
</xsl:template>
>>>




\<tbody templates\><<<
<xsl:template match="*" mode="cline">
  <xsl:copy>
     <xsl:if test="self::entry">
        <xsl:attribute name="rowsep">
            <xsl:variable name="pos">
               <xsl:value-of select="position()" />
            </xsl:variable>
            <xsl:value-of select="parent::row
                                  / following-sibling::*[1]
                                  / child::entry[position()=$pos]
                                  / @rowsep
                                   " />
         </xsl:attribute>
     </xsl:if>
     <xsl:apply-templates select="*|@*|text()|comment()"  />
  </xsl:copy>
</xsl:template>
>>>









%%%%%%%%%%%%%%%%%%
\section{Shared}
%%%%%%%%%%%%%%%%%%



\<open xslt script\><<<
<![CDATA[
  <xsl:stylesheet version="1.0"
     xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
     xmlns:db="http://docbook.org/ns/docbook"
  >
     <xsl:output omit-xml-declaration = "yes" />
>>>

\<close xslt script\><<<
     <xsl:template match="*|@*|text()|comment()" >
       <xsl:copy>
         <xsl:apply-templates select="*|@*|text()|comment()" />
       </xsl:copy>
     </xsl:template>
  </xsl:stylesheet>
]]>
>>>


\<get content template\><<<
<xsl:template match="*" mode="content" >
 <xsl:choose>
    <xsl:when test=" @class = 'char' " >
      <xsl:text>x</xsl:text>
    </xsl:when>
    <xsl:when test=" not(
           (@title = 'speech-extra') or (@class = 'accent-char')
        ) " >
      <xsl:apply-templates select="*|text()" mode="content" />
    </xsl:when>
 </xsl:choose>
</xsl:template>
>>>





%%%%%%%%%%%%%%%%%%
\section{Copyright}
%%%%%%%%%%%%%%%%%%

\let\newfilename=\relax

\<copy right\><<<
/**********************************************************/ >>>



\<cont copy right\><<<
/*                                                        */
/* This work may be distributed and/or modified under the */
/* conditions of the LaTeX Project Public License, either */
/* version 1.3 of this license or (at your option) any    */
/* later version. The latest version of this license is   */
/* in                                                     */
/*   http://www.latex-project.org/lppl.txt                */
/* and version 1.3 or later is part of all distributions  */
/* of LaTeX version 2003/12/01 or later.                  */
/*                                                        */
/* This work has the LPPL maintenance status "maintained".*/
/*                                                        */
/* The Current Maintainer of this work                    */
/* is the TeX4ht Project <http://tug.org/tex4ht>.         */
>>>

\ifdojava
\AtEndDocument{\Needs{%
   "pushd \XTPIPES || exit 1
    ;
    jar cf tex4ht.jar *
    ;
    popd
    ;
    mv \XTPIPES tex4ht.jar \TEXMFTEXivBIN
    ;
    cp \XTPIPES xtpipes/lib/*
       \TEXMFTEXivXTPIPES
"}}
\fi

%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\end{document}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%

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