Template::Plugin::XML::Style - Simple XML stylesheet transfomations

       Andy Wardley

       Copyright (C) 2001-2006 Andy Wardley.  All Rights Reserved.

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl
       itself.

       This plugin defines a filter for performing simple stylesheet based transformations of XML text.

       Named parameters are used to define those XML elements which require transformation.  These may be
       specified with the USE directive when the plugin is loaded and/or with the FILTER directive when the
       plugin is used.

       This example shows how the default attributes "border="0"" and "cellpadding="4"" can be added to <table>
       elements.

           [% USE xmlstyle
                  table = {
                      attributes = {
                          border      = 0
                          cellpadding = 4
                      }
                  }
           %]

           [% FILTER xmlstyle %]
           <table>
              ...
           </table>
           [% END %]

       This produces the output:

           <table border="0" cellpadding="4">
              ...
           </table>

       Parameters specified within the USE directive are applied automatically each time the "xmlstyle" FILTER
       is used.  Additional parameters passed to the FILTER directive apply for only that block.

           [% USE xmlstyle
                  table = {
                      attributes = {
                          border      = 0
                          cellpadding = 4
                      }
                  }
           %]

           [% FILTER xmlstyle
                  tr = {
                      attributes = {
                          valign="top"
                      }
                  }
           %]
           <table>
              <tr>
                ...
              </tr>
           </table>
           [% END %]

       Of course, you may prefer to define your stylesheet structures once and simply reference them by name.
       Passing a hash reference of named parameters is just the same as specifying the named parameters as far
       as the Template Toolkit is concerned.

           [% style_one = {
                 table = { ... }
                 tr    = { ... }
              }
              style_two = {
                 table = { ... }
                 td    = { ... }
              }
              style_three = {
                 th = { ... }
                 tv = { ... }
              }
           %]

           [% USE xmlstyle style_one %]

           [% FILTER xmlstyle style_two %]
              # style_one and style_two applied here
           [% END %]

           [% FILTER xmlstyle style_three %]
              # style_one and style_three applied here
           [% END %]

       Any attributes defined within the source tags will override those specified in the style sheet.

           [% USE xmlstyle
                  div = { attributes = { align = 'left' } }
           %]

           [% FILTER xmlstyle %]
           <div>foo</div>
           <div align="right">bar</div>
           [% END %]

       The output produced is:

           <div align="left">foo</div>
           <div align="right">bar</div>

       The filter can also be used to change the element from one type to another.

           [% FILTER xmlstyle
                     th = {
                         element = 'td'
                         attributes = { bgcolor='red' }
                     }
           %]
           <tr>
             <th>Heading</th>
           </tr>
           <tr>
             <td>Value</td>
           </tr>
           [% END %]

       The output here is as follows.  Notice how the end tag "</th>" is changed to "</td>" as well as the start
       tag.

           <tr>
             <td bgcolor="red">Heading</td>
           </tr>
           <tr>
             <td>Value</td>
           </tr>

       You can also define text to be added immediately before or after the start or end tags.  For example:

           [% FILTER xmlstyle
                     table = {
                         pre_start = '<div align="center">'
                         post_end  = '</div>'
                     }
                     th = {
                         element    = 'td'
                         attributes = { bgcolor='red' }
                         post_start = '<b>'
                         pre_end    = '</b>'
                     }
           %]
           <table>
           <tr>
             <th>Heading</th>
           </tr>
           <tr>
             <td>Value</td>
           </tr>
           </table>
           [% END %]

       The output produced is:

           <div align="center">
           <table>
           <tr>
             <td bgcolor="red"><b>Heading</b></td>
           </tr>
           <tr>
             <td>Value</td>
           </tr>
           </table>
           </div>

       Template::Plugin::XML::Style - Simple XML stylesheet transfomations

       Template::Plugin

perl v5.34.0                                       2022-07-04                  Template::Plugin::XML::Style(3pm)

           [% USE xmlstyle
                  table = {
                      attributes = {
                          border      = 0
                          cellpadding = 4
                          cellspacing = 1
                      }
                  }
           %]

           [% FILTER xmlstyle %]
           <table>
           <tr>
             <td>Foo</td> <td>Bar</td> <td>Baz</td>
           </tr>
           </table>
           [% END %]