I'm using SVGs as report templates for an program I'm working on. In order to make the system as simple as possible for the designer, I'm using simple string substitution on the SVG to replace field names with HTML::Template tags. This works great for the basic stuff. One thing I need to be able to do, though, is identify specific embeded JPEG images in the SVG and replace them with HTML::Template tags as well. I'm trying to do this using a regular expression to match the correct base64 image data, but it isn't working. Here's what I've tried: 
my $base64_image = encode_base64($buf);

my $text = do { local( @ARGV, $/ ) = "test_template.svg" ; <> } ;

$text =~ s/##([a-zA-Z0-9_\.]+)##/<TMPL_VAR name="$1">/g;

my $photo_count = 1;
while ($text =~ s/\Q$base64_image/<TMPL_VAR name="photo_$photo_count">
+/s){
    $photo_count++;
}

[download]

I've verified that $base64_image is the same as what is found in the SVG. What am I doing wrong? Incorrect modifiers on the regular expression?

Thanks in advance.

In reply to Substituting base64 encoded text by Anonymous Monk

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