I have a chunk of template HTML in a structure suitable for HTML::Element to use, but it contains place holder text in a number of places that I want to replace with appropriate values at run time. I can manualy access each string that needs to be fixed by navigating the template structure, but that is somewhat fragile. Is there a better way of doing this?

use warnings;
use strict;
use HTML::TreeBuilder;
use Clone qw(clone);

my $newHTML = 
  ['div', {class => 'ourobject'},
    ['script', {language => 'JavaScript', type => 'text/JavaScript'},
      'embedLabTutorClient("VIEW", "URL", WWW, HHH)',
    ],
    ['noscript',
      ['object',
        {classid=>"CLSID:ReleaseCLSID", width=>'WWW', height=>'HHH', v
+iewastext=>'1'},
        ['param', {name=>'ViewSettingsUrl', value=>'URL'}],
        ['param', {name=>'ViewName', value=>'VIEW'}],
      ]
    ]
  ];


my $objUrl = 'somewhere/object.obj';
my $objView = 'erewhon';
my $objWidth = 255;
my $objHeight = 127;

my $copy = clone ($newHTML);

# Perform 'global' ssubstitutions on $copy here
    #s/WWW/$objWidth/;
    #s/HHH/$objHeight/;
    #s/VIEW/$objView/;
    #s/URL/$objUrl/;

my $element = HTML::Element->new ('root');

$element->push_content ($copy);
print $element->as_HTML(undef, '   ', {});

[download]

Prints:

<root><div class="ourobject">
      <script language="JavaScript" type="text/JavaScript">embedLabTut
+orClient("VIEW", "URL", WWW, HHH)</script>
      <noscript>
         <object classid="CLSID:ReleaseCLSID" height="HHH" viewastext=
+1 width="WWW">
            <param name="ViewSettingsUrl" value="URL">
            <param name="ViewName" value="VIEW">
         </object>
      </noscript>
   </div></root>

[download]

and I would like:

<root><div class="ourobject">
      <script language="JavaScript" type="text/JavaScript">embedLabTut
+orClient("erewhon", "somewhere/object.obj", 255, 127)</script>
      <noscript>
         <object classid="CLSID:ReleaseCLSID" height="127" viewastext=
+1 width="255">
            <param name="ViewSettingsUrl" value="somewhere/object.obj"
+>
            <param name="ViewName" value="erewhon">
         </object>
      </noscript>
   </div></root>

[download]
DWIM is Perl's answer to Gödel

In reply to How do I perform a global substitute in an HTML::Element by GrandFather

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