如何使用Perl选择性地修改HTML文档中脚本标签的src属性? [英] How can I selectively modify the src attributes of script tags in an HTML document using Perl?

问题描述

我需要在Perl中编写一个正则表达式，为所有src加上[perl] texthere [/perl]前缀，例如:

I need to write a regular expression in Perl that will prefix all srcs with [perl]texthere[/perl], like such:

 <script src="[perl]texthere[/perl]/text"></script> 

有帮助吗?谢谢！

推荐答案

使用适当的解析器，例如 HTML :: TokeParser ::简单:

Use a proper parser such as HTML::TokeParser::Simple:

#!/usr/bin/env perl

use strict; use warnings;
use HTML::TokeParser::Simple;

my $parser = HTML::TokeParser::Simple->new(handle => \*DATA);

while (my $token = $parser->get_token('script')) {
    if ($token->is_tag('script')
            and defined(my $src = $token->get_attr('src'))) {
            $src =~ m{^https?://}
                or  $token->set_attr('src', "[perl]texthere[/perl]$src");
    }
    print $token->as_is;
}

__DATA__
<script src="/js/text.text.js/"></script>

And at the same time, ignore scrs that begin with http, as such:

 <script src="https://websitewebsitewebsite"></script>

输出:

<script src="[perl]texthere[/perl]/js/text.text.js/"></script>

And at the same time, ignore scrs that begin with http, as such:

 <script src="https://websitewebsitewebsite"></script>

这篇关于如何使用Perl选择性地修改HTML文档中脚本标签的src属性?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！