I am looking to parse web site files to enable some simple manipulations (wrapping certain bits of plain text in custom tags). HTML::Parser is sufficient for this (HTML::TreeBuilder is probably overkill). However, some of the web site files contain an embedded tag language (eg, ASP, JSP, PHP). HTML::Parser does not recognize these tags (<% ... %>, etc), and produces some unfavourable results in these cases (I'd like it to treat them like regular tags and just ignore them). I don't see a way to extend HTML::Parser to handle such files.

Is there: A way to extend HTML::Parser? Another module I could use? Should I build my own parser with regex? I found these postings, and they both suggest I build my own parser for this: 1, 2, but thought I'd double-check in case there is a better way.

In case more detail is needed, I include my naive test script below:

#!/usr/bin/perl

use HTML::PullParser;

my $doc = <<'EOF'; my %options = ();
<input value="abc" /> abc &nbsp; abc
<% abc ( '<input value="abc" /> abc &nbsp; abc <span> %>', $abc ); %>
EOF

foreach ( qw{ start end comment declaration default process text } )
  { $options{$_} = "\"$_\", text"; }
my $p = HTML::PullParser->new ( doc => $doc, %options );

my $output = "";
print "DEBUG ---------------------------------------------------------
+-----\n";
while ( my $token = $p->get_token() )
{ 
  print "$token->[0]: '$token->[1]'\n";
  my $text = $token->[1];
  $text =~ s|abc|<b>abc</b>|g if $token->[0] eq 'text';
  $output .= $text;
}
print "---------------------------------------------------------------
+-----\n";

print $output;

[download]

Desired output:

<input value="abc" /> <b>abc</b> &nbsp; <b>abc</b>
<% abc ( '<input value="abc" /> abc &nbsp; abc <span> %>', $abc ); %>

[download]

Actual output:

<input value="abc" /> <b>abc</b> &nbsp; <b>abc</b>
<% <b>abc</b> ( '<input value="abc" /> <b>abc</b> &nbsp; <b>abc</b> <s
+pan> %>', $<b>abc</b> ); %>

[download]
Arnon Weinberg Back2Front - The Web Site People

In reply to Parsing ASP files by thewebsi

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