正则表达式删除 <p> 之间的回车符标签 [英] RegEx to remove carriage returns between <p> tags
问题描述
我一直在努力弄清楚如何删除出现在 标签之间的回车.(从技术上讲，我需要用空格替换它们，而不是删除它们.)
I've stumped myself trying to figure out how to remove carriage returns that occur between <p> tags. (Technically I need to replace them with spaces, not remove them.)
这是一个例子.我使用美元符号 $ 作为回车标记.
Here's an example. I've used a dollar sign $ as a carriage return marker.
<p>Ac nec suspendisse est, dapibus.</strong> Nulla taciti curabitur enim hendrerit.$
Ante ornare phasellustellus vivamus dictumst dolor aliquam imperdiet lectus.$
Nisl nullam sodales，tincidunt dictum dui eget，gravida anno.Montes convallis$
adipiscing，aenean hac litora.Ridiculus，ut consequat curae，amet.Nostra$
菜豆类 interdum justo.Pharetra urna est hac laoreet, magna.$
Porttitor purus purus，quis rutrum turpis.Montes netus nibh ornare potenti quam$
班级.Natoque nec proin sapien augue curae, elementum.</p>
<p>Ac nec <strong>suspendisse est, dapibus.</strong> Nulla taciti curabitur enim hendrerit.$
Ante ornare phasellus tellus vivamus dictumst dolor aliquam imperdiet lectus.$
Nisl nullam sodales, tincidunt dictum dui eget, gravida anno. Montes convallis$
adipiscing, aenean hac litora. Ridiculus, ut consequat curae, amet. Nostra$
phasellus ridiculus class interdum justo. <em>Pharetra urna est hac</em> laoreet, magna.$
Porttitor purus purus, quis rutrum turpis. Montes netus nibh ornare potenti quam$
class. Natoque nec proin sapien augue curae, elementum.</p>
如示例所示，<p> 标签之间可以有其他标签.所以我正在寻找一个正则表达式来用空格替换所有这些回车，但不要触及 <p> 标签之外的任何回车.
As the example shows, there can be other tags inbetween the <p> tags. So I'm looking for a regex to replace all these carriage returns with spaces but not touch any carriage returns outside the <p> tags.
非常感谢任何帮助.谢谢！
Any help is greatly appreciated. Thanks!
推荐答案
[\r\n]+(?=(?:[^<]+|<(?!/?p\b))*</p>)
第一部分匹配一个或多个任何类型的行分隔符(\n、\r\n 或 \r).其余的是前瞻，尝试将所有内容匹配到下一个 </p> 结束标记，但如果它首先找到了一个开始
The first part matches one or more of any kind of line separator (\n, \r\n, or \r). The rest is a lookahead that attempts to match everything up to the next closing </p> tag, but if it finds an opening <p> tag first, the match fails.
请注意，这个正则表达式很容易被欺骗，例如被 SGML 注释、
