正则表达式匹配具有特定属性的 html 标签

Question

我正在尝试匹配所有没有属性“term”或“range”的 HTML 标记

这里是示例 HTML 格式

<span class="inline prewrap strong">DATE:</span>    12/01/10
<span class="inline prewrap strong">MR:</span>  1234567
<span class="inline prewrap strong">DOB:</span> 12/01/65
<span class="inline prewrap strong">HISTORY OF PRESENT ILLNESS:</span>  Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum

<span class="inline prewrap strong">MEDICATIONS:</span>  <span term="Advil" range="true">Advil </span>and Ibuprofen.

我的正则表达式是：<(.*?)((?!\bterm\b).)>

不幸的是，这匹配了所有标签...如果内部文本不匹配，那就太好了，因为我需要过滤掉除具有特定属性的标签之外的所有标签。

Answer 1

我认为这个正则表达式可以正常工作。

此正则表达式将选择任何 HTML 标记的样式属性。

<\s*\w*\s*style.*?>

你可以在https://regex101.com查看这个

Answer 2

如果你喜欢正则表达式，这对我有用。 （注意 - 不包括过滤掉 cmets、doctype 和其他实体。
其他警告；标签可以嵌入到脚本、cmets 和其他东西中。）

span 标记（w/ attr）没有术语|范围属性

'<span
  (?=\s)
  (?! (?:[^>"\']|(?>".*?"|\'.*?\'))*? (?<=\s) (?:term|range) \s*= )
  \s+ (?:".*?"|\'.*?\'|[^>]*?)+ 
>'

任何标签（w/ attr）无术语|范围属性

'<[A-Za-z_:][\w:.-]*
  (?=\s)
  (?! (?:[^>"\']|(?>".*?"|\'.*?\'))*? (?<=\s) (?:term|range) \s*= )
  \s+ (?:".*?"|\'.*?\'|[^>]*?)+ 
>'

任何标签（w/o attr）无术语|范围属性

'<
  (?:
    [A-Za-z_:][\w:.-]*
    (?=\s)
    (?! (?:[^>"\']|(?>".*?"|\'.*?\'))*? (?<=\s) (?:term|range) \s*= )
    \s+ (?:".*?"|\'.*?\'|[^>]*?)+ 
  |
    /?[A-Za-z_:][\w:.-]*\s*/?
  )
>'

更新

使用 (?>) 构造的替代方法
下面的正则表达式用于无-'term|range'-属性
标志 = (g)global 和 (s)dotall

span 标签带属性
链接：http://regexr.com?2vrjr
正则表达式：<span(?=\s)(?!(?:[^>"\']|"[^"]*"|\'[^\']*\')*?(?<=\s)(?:term|range)\s*=)(?!\s*/?>)\s+(?:".*?"|\'.*?\'|[^>]*?)+>

任何带有属性的标签
链接：http://regexr.com?2vrju
正则表达式：<[A-Za-z_:][\w:.-]*(?=\s)(?!(?:[^>"\']|"[^"]*"|\'[^\']*\')*?(?<=\s)(?:term|range)\s*=)(?!\s*/?>)\s+(?:".*?"|\'.*?\'|[^>]*?)+>

任何带有 attr 或 wo/attr 的标签
链接：http://regexr.com?2vrk1
正则表达式：<(?:[A-Za-z_:][\w:.-]*(?=\s)(?!(?:[^>"\']|"[^"]*"|\'[^\']*\')*?(?<=\s)(?:term|range)\s*=)(?!\s*/?>)\s+(?:".*?"|\'.*?\'|[^>]*?)+|/?[A-Za-z_:][\w:.-]*\s*/?)>

'匹配每个标签，除了那些有 term="occasionally"'的标签之外

链接：http://regexr.com?2vrka
<(?:[A-Za-z_:][\w:.-]*(?=\s)(?!(?:[^>"\']|"[^"]*"|\'[^\']*\')*?(?<=\s)term\s*=\s*(["'])\s*occasionally\s*\1)(?!\s*/?>)\s+(?:".*?"|\'.*?\'|[^>]*?)+|/?[A-Za-z_:][\w:.-]*\s*/?)>

Answer 3

这会做你想做的事。它是为 Perl 程序编写的，格式可能因您使用的语言而异

/(?! [^>]+ \b(?:item|range)= ) (<[a-z]+.*?>) /igx

下面的代码在 Perl 程序中演示了这种模式

use strict;
use warnings;

my $pattern = qr/ (?! [^>]+ \b(?:item|range)= ) (<[a-z]+.*?>) /ix;

my $str = <<'END';

<span class="inline prewrap strong">DATE:</span>    12/01/10
<span class="inline prewrap strong">MR:</span>  1234567
<span class="inline prewrap strong">DOB:</span> 12/01/65
<span class="inline prewrap strong">HISTORY OF PRESENT ILLNESS:</span>  Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum

<span class="inline prewrap strong">MEDICATIONS:</span>  <span term="Advil" range="true">Advil </span>and Ibuprofen.

END

print "$_\n" foreach $str =~ /$pattern/g;

输出

<span class="inline prewrap strong">
<span class="inline prewrap strong">
<span class="inline prewrap strong">
<span class="inline prewrap strong">
<span class="inline prewrap strong">

Answer 4

<\w+\s+(?!term).*?>(.*?)</.*?>

Answer 5

我认为你应该使用 HTML 解析器来解决这个问题。创建自己的正则表达式是可能的，但肯定是错误的。想象一下你的代码包含这样的表达式

< span      class = "a"              >b< / span         >

这也是有效的，但要考虑正则表达式中所有可能的空格和 TAB 字符并不容易，并且需要进行测试才能确保它按预期工作。