Notepad ++删除内部带有特定文本的标签
我有一个包含产品的大型XML文件。我试图删除所有缺货的产品。文件大小超过20MB。
<product>
<name>bla1</name>
<price>50$</price>
<stock>yes</stock>
<description>bla</description>
</product>
<product>
<name>bla2</name>
<price>60$</price>
<stock>no</stock>
<description>bla</description>
</product>
...
是否可以使用Notepad ++的正则表达式删除它们，还是应该使用simpleXML（PHP）或类似的东西？
我的基本PHP代码：
$url = 'input/products.xml';
$xml = new SimpleXMLElement(file_get_contents($url));
foreach ($xml->product->children() as $product) {
//finding out of stock products and deleting them
}
$xml->asXml('output/products.xml');
3 个答案:
答案 0 :(得分：2)
转发
通过正则表达式进行模式匹配并不理想，如果您可以访问PHP，那么我建议使用正确的HTLM解析工具。话虽如此，我提供了一个可以在Notepad ++中使用的解决方案
描述
<product\s*(?:[^>=]|='[^']*'|="[^"]*"|=[^'"][^\s>]*)*?\s?\/?>(?:(?!</product).)*<stock\s*(?:[^>=]|='[^']*'|="[^"]*"|=[^'"][^\s>]*)*?\s?\/?>no</stock>(?:(?!</product).)*<\/product>
替换为： 没有
要更好地查看图像，可以右键单击它并在新窗口中选择视图。
此正则表达式将执行以下操作：
- 查找整个产品部分
- 需要子标签
stock - 要求子标签
stock的值为no - 避免在HTML中进行模式匹配的极端边缘情况
来自Notepad ++
从Notepad ++中，请注意您应该使用notpad ++ 6.1或更高版本，因为旧版本中的正则表达式存在问题，现在已经解决了。
-
按 ctrl h 进入查找和替换 模式
-
选择正则表达式选项
-
在＆＃34;找到什么＆＃34;字段放置正则表达式
-
在＆＃34;替换为＆＃34;字段输入``
-
点击全部替换
实施例
现场演示
https://regex101.com/r/cW9nC5/1
示例文字
<product>
<name>bla1</name>
<price>50$</price>
<stock>yes</stock>
<description>bla</description>
</product>
<product>
<name>bla2</name>
<price>60$</price>
<stock>no</stock>
<description>bla</description>
</product>
替换后
<product>
<name>bla1</name>
<price>50$</price>
<stock>yes</stock>
<description>bla</description>
</product>
解释
NODE EXPLANATION
----------------------------------------------------------------------
<product '<product'
----------------------------------------------------------------------
\s* whitespace (\n, \r, \t, \f, and " ") (0 or
more times (matching the most amount
possible))
----------------------------------------------------------------------
(?: group, but do not capture (0 or more times
(matching the least amount possible)):
----------------------------------------------------------------------
[^>=] any character except: '>', '='
----------------------------------------------------------------------
| OR
----------------------------------------------------------------------
=' '=\''
----------------------------------------------------------------------
[^']* any character except: ''' (0 or more
times (matching the most amount
possible))
----------------------------------------------------------------------
' '\''
----------------------------------------------------------------------
| OR
----------------------------------------------------------------------
=" '="'
----------------------------------------------------------------------
[^"]* any character except: '"' (0 or more
times (matching the most amount
possible))
----------------------------------------------------------------------
" '"'
----------------------------------------------------------------------
| OR
----------------------------------------------------------------------
= '='
----------------------------------------------------------------------
[^'"] any character except: ''', '"'
----------------------------------------------------------------------
[^\s>]* any character except: whitespace (\n,
\r, \t, \f, and " "), '>' (0 or more
times (matching the most amount
possible))
----------------------------------------------------------------------
)*? end of grouping
----------------------------------------------------------------------
\s? whitespace (\n, \r, \t, \f, and " ")
(optional (matching the most amount
possible))
----------------------------------------------------------------------
\/? '/' (optional (matching the most amount
possible))
----------------------------------------------------------------------
> '>\r\n'
----------------------------------------------------------------------
(?: group, but do not capture (0 or more times
(matching the most amount possible)):
----------------------------------------------------------------------
(?! look ahead to see if there is not:
----------------------------------------------------------------------
</product '</product'
----------------------------------------------------------------------
) end of look-ahead
----------------------------------------------------------------------
. any character except \n
----------------------------------------------------------------------
)* end of grouping
----------------------------------------------------------------------
<stock '<stock'
----------------------------------------------------------------------
\s* whitespace (\n, \r, \t, \f, and " ") (0 or
more times (matching the most amount
possible))
----------------------------------------------------------------------
(?: group, but do not capture (0 or more times
(matching the least amount possible)):
----------------------------------------------------------------------
[^>=] any character except: '>', '='
----------------------------------------------------------------------
| OR
----------------------------------------------------------------------
=' '=\''
----------------------------------------------------------------------
[^']* any character except: ''' (0 or more
times (matching the most amount
possible))
----------------------------------------------------------------------
' '\''
----------------------------------------------------------------------
| OR
----------------------------------------------------------------------
=" '="'
----------------------------------------------------------------------
[^"]* any character except: '"' (0 or more
times (matching the most amount
possible))
----------------------------------------------------------------------
" '"'
----------------------------------------------------------------------
| OR
----------------------------------------------------------------------
= '='
----------------------------------------------------------------------
[^'"] any character except: ''', '"'
----------------------------------------------------------------------
[^\s>]* any character except: whitespace (\n,
\r, \t, \f, and " "), '>' (0 or more
times (matching the most amount
possible))
----------------------------------------------------------------------
)*? end of grouping
----------------------------------------------------------------------
\s? whitespace (\n, \r, \t, \f, and " ")
(optional (matching the most amount
possible))
----------------------------------------------------------------------
\/? '/' (optional (matching the most amount
possible))
----------------------------------------------------------------------
>no</stock> '>no</stock>'
----------------------------------------------------------------------
(?: group, but do not capture (0 or more times
(matching the most amount possible)):
----------------------------------------------------------------------
(?! look ahead to see if there is not:
----------------------------------------------------------------------
</product '</product'
----------------------------------------------------------------------
) end of look-ahead
----------------------------------------------------------------------
. any character except \n
----------------------------------------------------------------------
)* end of grouping
----------------------------------------------------------------------
< '<'
----------------------------------------------------------------------
\/ '/'
----------------------------------------------------------------------
product> 'product>'
----------------------------------------------------------------------
答案 1 :(得分：1)
我猜记事本++会更容易，即：
发现： <product>\s+<name>.*?<\/name>\s+<price>.*?<\/price>\s+<stock>no<\/stock>\s+<description>.*?\/description>\s+<\/product>
REPLACE：没有任何东西
DEMO
https://regex101.com/r/fH0mM7/1
注意
请务必检查底部的Regular Expression
答案 2 :(得分：1)
您可以使用以下代码
使用PHP执行此操作<?php
$url = 'input/products.xml';
$xml = new SimpleXMLElement(file_get_contents($url));
$i = count($xml) - 1;
for ($i; $i >= 0; --$i) {
$product = $xml->product[$i];
if ($product->stock == "no") {
unset($xml->product[$i]);
}
}
$xml->asXml('output/products.xml');
?>
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