我正在为一个基于Python的开源博客平台(类似于WordPress)在appengine上(使用WebApp框架和Django模板)编写一个插件
这个插件和这个插件完全一样:http://wordpress.org/extend/plugins/blog-mechanics-keyword-link-plugin-v01/
A plugin that allows you to define keyword/link pairs. The keywords are automatically linked in each of your posts.
以下是关键的正则表达式源代码:
// The regular expression comes from an older
// auto link plugin by Sean Hickey. It fixed the autolinking inside a link
// problem. Thanks to [Steph] for the code.
// For keywords with quotes (') to work, we need to disable word boundary matching
if ($ignorecase) $case = "i"; else $case="";
$cleankeyword = preg_quote($cleankeyword,'\'');
if (BM_KEYWORDLINK_QUOTES && strpos( $cleankeyword , '\'')>0)
$regEx = '\'(?!((<.*?)|(<a.*?)))(' . $cleankeyword . ')(?!(([^<>]*?)>)|([^>]*?</a>))\'s' . $case;
else
$regEx = '\'(?!((<.*?)|(<a.*?)))(\b'. $cleankeyword . '\b)(?!(([^<>]*?)>)|([^>]*?</a>))\'s' . $case;
$content = preg_replace($regEx,$url,$content,$limit);
如何在Python中重写正则表达式?我没有使用PHP的经验。在
非常感谢!在
您尝试了什么?仔细阅读
re
手册。它有很多很好的信息,它将回答你可能有的许多问题。例如,re.escape
使外部字符串安全。在相关问题 更多 >
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