I have a folder with multiple files, and I'd like to remove all <script> tags and everything in between, e.g.:
This:
<script type="text/javascript">function(foo);</script>
As well as this:
<script type="text/javascript" src="scripts.js"></script>
I think in PHP it would be something like this:
<?php $string = preg_replace('#(\n?<script[^>]*?>.*?</script[^>]*?>)|(\n?<script[^>]*?/>)#is', '', $string); ?>
But I'm at a loss when it comes to UNIX.
You can use perl to replace strings in many files.
perl -pi -w -e 's/search/replace/g;' *.html
-e means execute the following line of code.
-i means edit in-place
-w write warnings
-p loop
You'll have to come up with the regex on your though. (The one you have should work.)
well you can run PHP from the commandline, or translate that line pretty easily into perl (the "p" in "preg_replace"). You could use sed to do something similar, but the regexes aren't as flexible. Regexes may or may not be good enough depending on where your input is coming from and what your goal is.
eg gawk
$ cat file
blah
<script type="text/javascript">function(foo);</script>
<script type="text/javascript" src="scripts.js"></script>
blah
<script type="text/javascript"
src="script1.js">
</script>
end
$ awk 'BEGIN{RS="</script>"}/<script/{gsub("<script.*","")}{print}END{if(RS=="")print}' file
blah
blah
end
so run it inside a for loop to go over your files(eg html)
for file in *.html
do
awk 'BEGIN{RS="</script>"}/<script/{gsub("<script.*","")}{print}END{if(RS=="")print}' $file >temp
mv temp $file
done
You can also do it with Perl,
perl -i.bak -0777ne 's|<script.*?</script>||gms;print' *.html
The only way you stand a chance of getting this right is to load the file (I'm assuming it's an HTML file) into a HTML/XML parser and remove the script nodes that way. Any other way will likely fall foul of the <script> tag containing "<script>" as part of its contents, for example:
<script>
document.write('</script>');
</script>
I'd just use something like HTML::TreeBuilder and remove all SCRIPT nodes as I walk the tree:
#!/usr/local/perls/perl-5.10.1/bin/perl
use 5.010;
use HTML::TreeBuilder;
my $html = HTML::TreeBuilder->new;
my $root = $html->parse_file( *DATA );
my @queue = ( $root->elementify );
while( my $element = shift @queue )
{
foreach ( $element->content_list )
{
when ( ! ref ) { 1 }
when ( $_->tag eq 'script' )
{
$_->delete;
}
default
{
push @queue, $_
}
}
}
print $html->as_HTML;
__END__
<html>
<head>
<title>This is a title</title>
<script>
code section 1
</script>
</head>
<body>
<h1>This is a heading</h1>
<script>
code section 2
</script>
<div>
<script>
code section
</script>
</div>
</body>
</html>