用锚元素从锚元素中提取液体宏

发布于 2025-02-02 15:31:25 字数 1209 浏览 1 评论 0原文

我正在开发一项服务，该服务使人们可以使用液体模板引擎呈现HTML页面，并且我想从任何a elements提取任何href s，因此我们可以稍后在单击链接上运行统计信息。

我想出了这样的东西。这个想法是将URL编码的值添加到data-Original-Macro属性，如果它是href属性的液体宏，则

def add_original_macro_to_links(html: str) -> str:
    html_tree = bs4.BeautifulSoup(html, features="lxml")

    for a in html_tree.find_all("a"):
        href = a.get("href")
        print(href)
        if not href or not re.match(r"{{.+}}", href):
            continue

        a["data-original-macro"] = parse.quote(href)

    return str(html_tree).strip()

在大多数情况下都可以使用此作用，除非宏有一个“字符，如此示例：

<ul>
{%- for person in people %}
  <li>
    <a href="{{person | prepend: "http://example.com/"}}">
      {{ person | capitalize }}
    </a>
  </li>
{%- endfor%}
</ul>

在这种情况下，BeautifulSoup将解析a元素。 ＆lt; a href =“ {{person | prepend：” http：=“”＆gt; {{person |大写}}}＆lt;/a＆gt;，这无助于我的目的。

我的问题是，是否有一些方法可以始终如一地正确提取HREF？最糟糕的情况，我可能只是忽略了这种情况，因为我认为只有奇数客户会使用这种格式，因为它不在我们网站的默认宏集中。

原文

I'm working on a service that lets people render their HTML pages using the Liquid templating engine, and I want to extract any hrefs from any a elements, so we can run stats on the clicked links later.

Using BeautifulSoup, I came up with something like this. The idea is to add the URL-encoded value to the data-original-macroattribute if it's a Liquid macro in the href attribute

def add_original_macro_to_links(html: str) -> str:
    html_tree = bs4.BeautifulSoup(html, features="lxml")

    for a in html_tree.find_all("a"):
        href = a.get("href")
        print(href)
        if not href or not re.match(r"{{.+}}", href):
            continue

        a["data-original-macro"] = parse.quote(href)

    return str(html_tree).strip()

This works for most cases, except when a macro has a " character in it, like this example:

<ul>
{%- for person in people %}
  <li>
    <a href="{{person | prepend: "http://example.com/"}}">
      {{ person | capitalize }}
    </a>
  </li>
{%- endfor%}
</ul>

In this case, BeautifulSoup will parse the a element as this:
<a href="{{person | prepend: " http:="">{{ person | capitalize }}</a>, which doesn't work for my purposes.

My question is, is there some way to correctly extract the href consistently? Worst case I may just ignore this case, since I'm thinking only the odd customer will use this format, as it's not in our website's default set of macros.

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