查找紧随其后的小写字母和大写字母

发布于 2024-12-26 02:08:00 字数 2004 浏览 2 评论 0原文

我的文本如下:

<font size=+2 color=#F07500><b> [ba]</font></b>
<ul><li><font color =#0B610B> Word word wordWord word.<br></font></li></ul>
<ul><li><font color =#F07500> Word word word.<br></font></li></ul>
<ul><li><font color =#0B610B> Word word word wordWord.<br></font></li></ul>
<ul><li><font color =#0B610B> WordWord.<br></font></li></ul>
<br><font color =#E41B17><b>UPPERCASE LETTERS</b></font> 
<ul><li><font color =#0B610B> Word word wordWord word.<br></font><br><font color =#E41B17><b>PhD and dataBase</b></font> </li></ul>
<font color =#0B610B> Word word word.<br></font></li></ul><dd><font color =#F07500>     »» Word wordWord word.<br></font>

每个 ... 中都有一个小写字母,后面紧跟着一个大写字母。例如:

<font color =#0B610B> Word word wordWord word.<br></font>

我想通过按如下方式拆分它们来纠正此错误(即:在它们之间添加冒号和空格):

<font color =#0B610B> Word word word: Word word.<br></font>

到目前为止,我一直在使用:

(<font color =#0B610B\b[^>]*>)(.*?</font>)

选择 ...,它可以很好地通过 ...

但是当我使用时:

(<font color =#0B610B\b[^>]*>)(.*?[a-z])([A-Z].*?</font>)

它确实找到但选择了一行中 ... 之间的所有内容,而不管其他字体颜色标签如何,并替换其他不需要的内容实例。

我希望它找到并替换每个特定标签对中的错误:...,而不是抓取以 < 开头的所有内容;font color =#0B610B> 并以 结尾

有没有正则表达式可以解决这个问题?非常感谢。

My text is as below:

<font size=+2 color=#F07500><b> [ba]</font></b>
<ul><li><font color =#0B610B> Word word wordWord word.<br></font></li></ul>
<ul><li><font color =#F07500> Word word word.<br></font></li></ul>
<ul><li><font color =#0B610B> Word word word wordWord.<br></font></li></ul>
<ul><li><font color =#0B610B> WordWord.<br></font></li></ul>
<br><font color =#E41B17><b>UPPERCASE LETTERS</b></font> 
<ul><li><font color =#0B610B> Word word wordWord word.<br></font><br><font color =#E41B17><b>PhD and dataBase</b></font> </li></ul>
<font color =#0B610B> Word word word.<br></font></li></ul><dd><font color =#F07500>     »» Word wordWord word.<br></font>

There is a lowercase letter immediately followed by an uppercase in each of the <font color =#0B610B>...</font>. For example:

<font color =#0B610B> Word word wordWord word.<br></font>

I want to correct this error by splitting them as follows (i.e: adding a colon and a space between them):

<font color =#0B610B> Word word word: Word word.<br></font>

So far, I have been using:

(<font color =#0B610B\b[^>]*>)(.*?</font>)

to select each of the instances of <font color =#0B610B>...</font>, and it works fine in finding one instance by one instance of <font color =#0B610B>...</font>.

But when I use:

(<font color =#0B610B\b[^>]*>)(.*?[a-z])([A-Z].*?</font>)

it does find but selects everything between <font color =#0B610B>...</font>in one line regardless of other font-color tags, and replaces other unwanted instances.

I want it to find and replace error in each of this specific pair of tags: <font color =#0B610B>...</font>, not grabbing everything starting by <font color =#0B610B> and ending in </font>

Are there any regular expressions to solve this problem? Many thanks in advance.

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述情 2025-01-02 02:08:00

一般来说,正则表达式对于解析 HTML 来说不是一个好主意(如果它是一次性的,你可能没问题)。

我认为这可能是您的正则表达式不起作用的原因。
您能举一个正则表达式失败的例子吗?

我能想到的一种情况是匹配的 中没有匹配项 ([az][AZ])一对,但相邻中有。例如:

<font color=#0B610B>word word</font><font color=#000000>word wordWord</font>

在本例中,唯一有效匹配是 word wordword word以及字符串 Word 的其余部分,这就是正则表达式匹配的内容(因为如果它可以匹配它就会匹配!)

我可以想一个粗略的解决方法,但我不会推荐它,除非这个任务是一次性的,因为使用 HTML 的正则表达式总是容易出现此类错误!这个正则表达式的效率也很低。尝试(未经测试):

(<font color =#0B610B\b[^>]*>)(([^<]|<(?!/font))*?[a-z])([A-Z].*?</font>)

它说,“查找 标签,后跟尖括号 < not 后跟 /font,或其他任何内容,然后再次跟上 [az][AZ]”。
因此它会尝试确保匹配不会超出
边界。

In general, regex is not a good idea for parsing HTML (if it's a once-off you might be OK).

I think this might be the reason your regex is not working.
Can you give an example of a case in which your regex fails?

One case I can think of if is there is no match ([a-z][A-Z]) within a matching <font color=#0B610B></font> pair, but there is in a neighbouring <font></font>. For example:

<font color=#0B610B>word word</font><font color=#000000>word wordWord</font>

In this case, the only valid match is <font color=#0B610B>word word</font><font color=#000000>word word and the rest of the string Word</font>, and so this is what the regex matches (since if it can match it will!)

I can think of a crude workaround but I wouldn't recommend it unless this task is a once-off because using regex for HTML is always prone to such errors!. This regex is also pretty inefficient. Try (untested):

(<font color =#0B610B\b[^>]*>)(([^<]|<(?!/font))*?[a-z])([A-Z].*?</font>)

It says, "look for the <font colour=xxxx> tag, followed by either an angle bracket < not followed by /font, OR anything else, and again followed by the [a-z][A-Z]".
So it tries to make sure that the match doesn't go over a </font> boundary.

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