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[xsl] Re: Grouping flat HTML at multiple levels


Subject: [xsl] Re: Grouping flat HTML at multiple levels
From: Mark Peters <markpeters.work@xxxxxxxxx>
Date: Tue, 2 Oct 2012 11:50:39 -0400

Hi,

My doc team is currently moving our help content from HTML to DITA
XML. The HTML is a flat. Most text is stored in <p> nodes with CSS
@class tags.

So far, I've been able to group the <h1/>,< h2/>, and <h3/> elements
in generic <topic/> nodes.

Where I'm tripping up is the second layer of grouping inside each of
the <h1/>,< h2/>, and <h3/> groups.

Here's where I need help:

Nest each group of <p class="ListNumber"> and <p
class="ListNumberLast"> nodes as <li> within <ol>.
Nest each group of <p class="ListBullet"> and <p
class="ListBulletLast"> nodes as <li> within <ul>.

I'll copy the rest of the <p/> nodes as they are.


Here's an example of the input:

<?xml version="1.0" encoding="UTF-8"?>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <meta name="generator" content="Adobe RoboHelp 9"/>
        <title>Configuring Profile Headers</title>
        <link rel="StyleSheet" href="../css/opus_help.css" type="text/css"/>
    </head>
    <body>
        <h1>
            <a name="Configuring_Profile_
Headers" id="Configuring_Profile_Headers" shape="rect"/>Configuring
Profile Headers</h1>
        <p>You can control the content and appearance of a profile
header using the Profile Header Editor.</p>
        <p>In the Profile Header Editor, you can:</p>
        <p class="ListBullet">
            <a href="#Adding__Deleting__and_Repositioning_Fields"
shape="rect">Add, delete and reposition fields</a>
        </p>
        <p class="ListBullet">
            <a href="#Formatting_Field_Labels_and_Cells"
shape="rect">Format field labels and cells</a>
        </p>
        <p class="ListBullet">
            <a href="#Adding_Conditions_to_Fields" shape="rect">Add
conditions to profile header fields</a>
        </p>
        <p class="ListBullet">
            <a href="#Adding_Symbols_to_Fields" shape="rect">Add symbols</a>
        </p>
        <p class="ListBulletLast">
            <a href="#Previewing_the_Profile_Header"
shape="rect">Preview changes</a>
        </p>
        <p class="To">To open the profile header in the Profile Header
Editor:</p>
        <p class="ListNumber">In the Profile Header page, click to
select the profile header you want to edit.</p>
        <p class="ListNumberLast">Click <span style="font-weight:
bold;">Edit</span>. The profile header opens in the Profile Header
Editor.</p>
        <p class="To">To close the Profile Editor:</p>
        <p class="ListBulletLast">Click  <span class="ListBold">File
&gt; Close</span>.</p>
        <h2>
            <a name="Adding__Deleting__and_Repositioning_Fields"
id="Adding__Deleting__and_Repositioning_Fields" shape="rect"/>Adding,
Deleting, and Repositioning Fields</h2>
        <p class="To">To add a field to a profile header:</p>
        <p class="ListNumber">Find the field in the Domain Fields
panel that you want to add to the profile header.</p>
        <p class="ListNumber">Click and hold the field and drag it
into the profile header template.</p>
        <p class="ListNumber">Release the field to add it to the
profile header.</p>
        <p class="ListNumberLast">Repeat until all needed fields are
added to the profile header.</p>
        <p class="To">To remove a field from a profile header:</p>
        <p class="ListNumber">In the profile header template, click to
select the field you want to remove from the profile header.</p>
        <p class="ListNumberLast">Click the <span style="font-weight:
bold;">delete</span> button <img src="../Images/Editor Icons -
Delete.jpg" alt="" style="border: none;" width="22" height="22"
border="0"/> in the upper right corner of the profile header template.
The field is removed from the profile header template.</p>
        <p class="To">To position a field in a profile header:</p>
        <p class="ListNumber">In the profile header template, click
and hold the field.</p>
        <p class="ListNumber">Drag it into the new position. The
position for the field is indicated by a vertical line.</p>
        <p class="ListNumberLast">Release the field.</p>
        <h3>
            <a name="Styles" id="Styles" shape="rect"/>Styles</h3>
        <p>Selecting a field style allows you to highlight or
emphasize a field in a profile. You can set a default style and change
the style based on one or more conditions. See Conditional  Field
Styles for more information.</p>
        <p>To set a default style for a cell:</p>
        <p class="ListNumber">Click the cell you want to set a style for.</p>
        <p class="ListNumberLast">Use the Default Style drop-down menu
to select a style.</p>
    </body>
</html>

Here's approximately where I want to go:

<topic>
    <title>Configuring Profile Headers</title>
    <body>
        <p>You can control the content and appearance of a profile
header using the Profile Header Editor.</p>
        <p>In the Profile Header Editor, you can:</p>
        <ul>
            <li>
                <a href="#Adding__Deleting__and_Repositioning_Fields"
shape="rect">Add, delete and reposition fields</a>
            </li>
            <li>
                <a href="#Formatting_Field_Labels_and_Cells"
shape="rect">Format field labels and cells</a>
            </li>
            <li>
                <a href="#Adding_Conditions_to_Fields"
shape="rect">Add conditions to profile header fields</a>
            </li>
            <li>
                <a href="#Adding_Symbols_to_Fields" shape="rect">Add symbols</a>
            </li>
            <li>
                <a href="#Previewing_the_Profile_Header"
shape="rect">Preview changes</a>
            </li>
        </ul>
        <p>To open the profile header in the Profile Header Editor:</p>
        <ol>
            <li>In the Profile Header page, click to select the
profile header you want to edit.</li>
            <li>Click <span style="font-weight: bold;">Edit</span>.
The profile header opens in the Profile Header Editor.</li>
        </ol>
        <p>To close the Profile Editor:</p>
        <ul>
            <li>Click  <span class="ListBold">File &gt; Close</span>.</li>
        </ul>
    </body>
    <topic>
        <title>Adding, Deleting, and Repositioning Fields</title>
        <body>
            <p>To add a field to a profile header:</p>
            <ol>
                <li>Find the field in the Domain Fields panel that you
want to add to the profile header.</li>
                <li>Click and hold the field and drag it into the
profile header template.</li>
                <li>Release the field to add it to the profile header.</li>
                <li>Repeat until all needed fields are added to the
profile header.</li>
            </ol>
            <p>To remove a field from a profile header:</p>
            <ol>
                <li>In the profile header template, click to select
the field you want to remove from the profile header.</li>
                <li>Click the <span style="font-weight:
bold;">delete</span> button <img src="../Images/Editor Icons -
Delete.jpg" alt="" style="border: none;" width="22" height="22"
border="0"/> in the upper right corner of the profile header template.
The field is removed from the profile header template.</li>
            </ol>
            <p>To position a field in a profile header:</p>
            <ol>
                <li>In the profile header template, click and hold the
field.</li>
                <li>Drag it into the new position. The position for
the field is indicated by a vertical line.</li>
                <li>Release the field.</li>
            </ol>
        </body>
        <topic>
            <title>Styles</title>
            <body>
                <p>Selecting a field style allows you to highlight or
emphasize a field in a profile. You can set a default style and change
the style based on one or more conditions. See Conditional  Field
Styles for more information.</p>
                <p>To set a default style for a cell:</p>
                <ol>
                    <li>Click the cell you want to set a style for.</li>
                    <li>Use the Default Style drop-down menu to select
a style.</li>
                </ol>
            </body>
        </topic>
    </topic>
</topic>

Here's my current stylesheet:

<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="2.0" xmlns:ditaarch="http://dita.oasis-open.org/architecture/2005/">
<xsl:output method="xml" indent="yes"/>
    <xsl:strip-space elements="*"/>

    <xsl:template match="@* | node()">
    <xsl:copy>
      <xsl:apply-templates select="@* , node()"/>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="body">
  <xsl:for-each-group select="*" group-starting-with="h1">
      <topic>
        <xsl:apply-templates select="current-group()[self::h1]" />
        <xsl:for-each-group select="current-group() except ."
group-adjacent="@class='ListBullet'  or @class='ListBulletLast'">
        <xsl:choose>
          <xsl:when test="current-grouping-key()">
            <ul>
              <xsl:for-each-group select="current-group()"
group-adjacent="matches(@class, 'ListBullet')">
                <li>
                  <xsl:apply-templates/>
                </li>
              </xsl:for-each-group>
            </ul>
          </xsl:when>
        </xsl:choose>
      </xsl:for-each-group>
      <xsl:for-each-group select="current-group() except ."
group-adjacent="@class='ListNumber'  or @class='ListNumberLast'">
        <xsl:choose>
          <xsl:when test="current-grouping-key()">
            <ol>
              <xsl:for-each-group select="current-group()"
group-adjacent="matches(@class, 'ListNumber')">
                <li>
                  <xsl:apply-templates/>
                </li>
              </xsl:for-each-group>
            </ol>
          </xsl:when>
        </xsl:choose>
      </xsl:for-each-group>
        <xsl:for-each-group select="current-group() except ."
group-starting-with="h2|h3">
          <xsl:choose>
            <xsl:when test="self::h2">
              <topic>
                <xsl:apply-templates select="current-group()[self::*]" />
              </topic>
            </xsl:when>
            <xsl:when test="self::h3">
              <topic>
                <xsl:apply-templates select="current-group()[self::*]" />
              </topic>
            </xsl:when>
            <xsl:otherwise>
              <xsl:apply-templates select="current-group()[self::*]" />
            </xsl:otherwise>
          </xsl:choose>
        </xsl:for-each-group>
      </topic>
    </xsl:for-each-group>
    </xsl:template>

  <xsl:template match="h1"><title><xsl:value-of
select="."/></title></xsl:template>
  <xsl:template match="h2"><title><xsl:value-of
select="."/></title></xsl:template>
  <xsl:template match="h3"><title><xsl:value-of
select="."/></title></xsl:template>

</xsl:stylesheet>


And here's the output so far:

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <meta name="generator" content="Adobe RoboHelp 9"/>
        <title>Configuring Profile Headers</title>
        <link rel="StyleSheet" href="../css/opus_help.css" type="text/css"/>
    </head>
    <topic xmlns:ditaarch="http://dita.oasis-open.org/architecture/2005/">
        <title>Configuring Profile Headers</title>
        <ul>
            <li>
                <a href="#Adding__Deleting__and_Repositioning_Fields"
shape="rect">Add, delete and reposition fields</a>
            </li>
        </ul>
        <ul>
            <li>Click  <span class="ListBold">File &gt; Close</span>.</li>
        </ul>
        <ol>
            <li>In the Profile Header page, click to select the
profile header you want to edit.</li>
        </ol>
        <ol>
            <li>Find the field in the Domain Fields panel that you
want to add to the profile header.</li>
        </ol>
        <ol>
            <li>In the profile header template, click to select the
field you want to remove from the profile header.</li>
        </ol>
        <ol>
            <li>In the profile header template, click and hold the field.</li>
        </ol>
        <ol>
            <li>Click the cell you want to set a style for.</li>
        </ol>
        <p>You can control the content and appearance of a profile
header using the Profile Header Editor.</p>
        <p>In the Profile Header Editor, you can:</p>
        <p class="ListBullet">
            <a href="#Adding__Deleting__and_Repositioning_Fields"
shape="rect">Add, delete and reposition fields</a>
        </p>
        <p class="ListBullet">
            <a href="#Formatting_Field_Labels_and_Cells"
shape="rect">Format field labels and cells</a>
        </p>
        <p class="ListBullet">
            <a href="#Adding_Conditions_to_Fields" shape="rect">Add
conditions to profile header fields</a>
        </p>
        <p class="ListBullet">
            <a href="#Adding_Symbols_to_Fields" shape="rect">Add symbols</a>
        </p>
        <p class="ListBulletLast">
            <a href="#Previewing_the_Profile_Header"
shape="rect">Preview changes</a>
        </p>
        <p class="To">To open the profile header in the Profile Header
Editor:</p>
        <p class="ListNumber">In the Profile Header page, click to
select the profile header you want to edit.</p>
        <p class="ListNumberLast">Click <span style="font-weight:
bold;">Edit</span>. The profile header opens in the Profile Header
Editor.</p>
        <p class="To">To close the Profile Editor:</p>
        <p class="ListBulletLast">Click  <span class="ListBold">File
&gt; Close</span>.</p>
        <topic>
            <title>Adding, Deleting, and Repositioning Fields</title>
            <p class="To">To add a field to a profile header:</p>
            <p class="ListNumber">Find the field in the Domain Fields
panel that you want to add to the profile header.</p>
            <p class="ListNumber">Click and hold the field and drag it
into the profile header template.</p>
            <p class="ListNumber">Release the field to add it to the
profile header.</p>
            <p class="ListNumberLast">Repeat until all needed fields
are added to the profile header.</p>
            <p class="To">To remove a field from a profile header:</p>
            <p class="ListNumber">In the profile header template,
click to select the field you want to remove from the profile
header.</p>
            <p class="ListNumberLast">Click the <span
style="font-weight: bold;">delete</span> button <img
src="../Images/Editor Icons - Delete.jpg" alt="" style="border: none;"
width="22" height="22" border="0"/> in the upper right corner of the
profile header template. The field is removed from the profile header
template.</p>
            <p class="To">To position a field in a profile header:</p>
            <p class="ListNumber">In the profile header template,
click and hold the field.</p>
            <p class="ListNumber">Drag it into the new position. The
position for the field is indicated by a vertical line.</p>
            <p class="ListNumberLast">Release the field.</p>
        </topic>
        <topic>
            <title>Styles</title>
            <p>Selecting a field style allows you to highlight or
emphasize a field in a profile. You can set a default style and change
the style based on one or more conditions. See Conditional  Field
Styles for more information.</p>
            <p>To set a default style for a cell:</p>
            <p class="ListNumber">Click the cell you want to set a
style for.</p>
            <p class="ListNumberLast">Use the Default Style drop-down
menu to select a style.</p>
        </topic>
    </topic>
</html>

As you can see, the current stylesheet groups unordered list items
first (and nests each list item in its own <ul/> node), then groups
ordered list items (and nests each list item in its own <ul/> node),
and then displays the rest of the content.

I've tried approaching this challenge a variety of ways, without success.

Thanks in advance for any help you can offer.

Best,
Mark


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