用URL链接替换文本中的URL [英] replace URLs in text with links to URLs

问题描述

使用Python我希望将文本正文中的所有网址替换为指向这些网址的链接，就像Gmail所做的那样。
这可以用单行正则表达式完成吗？

Using Python I want to replace all URLs in a body of text with links to those URLs, like what Gmail does. Can this be done in a one liner regular expression?

编辑：按文本正文我只是指纯文本 - 没有HTML

by body of text I just meant plain text - no HTML

推荐答案

您可以使用DOM / HTML解析库（请参阅html5lib）加载文档，获取所有文本节点，将它们与正则表达式匹配并替换使用PCRE的正则表达式替换URI及其周围的锚点的文本节点，例如：

You can load the document up with a DOM/HTML parsing library ( see html5lib ), grab all text nodes, match them against a regular expression and replace the text nodes with a regex replacement of the URI with anchors around it using a PCRE such as:

/(https?:[;\/?\\@&=+$,\[\]A-Za-z0-9\-_\.\!\~\*\'\(\)%][\;\/\?\:\@\&\=\+\$\,\[\]A-Za-z0-9\-_\.\!\~\*\'\(\)%#]*|[KZ]:\\*.*\w+)/g

我很确定你可以匆匆找到某种实用工具，我不能想到我的头脑中的任何一个。

I'm quite sure you can scourge through and find some sort of utility that does this, I can't think of any off the top of my head though.

编辑：尝试使用答案他re：我如何获得python-markdown另外urlify格式化纯文本时的链接？

Try using the answers here: How do I get python-markdown to additionally "urlify" links when formatting plain text?

import re

urlfinder = re.compile("([0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}|((news|telnet|nttp|file|http|ftp|https)://)|(www|ftp)[-A-Za-z0-9]*\\.)[-A-Za-z0-9\\.]+):[0-9]*)?/[-A-Za-z0-9_\\$\\.\\+\\!\\*\\(\\),;:@&=\\?/~\\#\\%]*[^]'\\.}>\\),\\\"]")

def urlify2(value):
    return urlfinder.sub(r'<a href="\1">\1</a>', value)

在字符串上调用urlify2，如果你没有处理DOM对象，我认为就是这样。

call urlify2 on a string and I think that's it if you aren't dealing with a DOM object.

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