Notepad ++删除带有特定文本的标签

Question

我有一个带有产品的大型XML文件。 我正在尝试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');

Answer 1

向前

通过正则表达式进行模式匹配不是理想的选择，如果您可以访问PHP，那么我建议您使用适当的HTLM解析工具。 话虽如此，我提供了可以在Notepad ++中使用的解决方案

描述

<product\\s*(?:[^>=]|='[^']*'|="[^"]*"|=[^'"][^\\s>]*)*?\\s?\\/?>(?:(?!</product).)*<stock\\s*(?:[^>=]|='[^']*'|="[^"]*"|=[^'"][^\\s>]*)*?\\s?\\/?>no</stock>(?:(?!</product).)*<\\/product>

用。。。来代替： 没有

要更好地查看图像，可以右键单击它并选择在新窗口中查看。

此正则表达式将执行以下操作：

• 找到整个产品部分
• 需要子标签stock
• 要求子标签stock的价值为no
• 避免极端情况，以免在HTML中进行模式匹配

从记事本++

在Notepad ++中，请注意，您应该使用notpad ++版本6.1或更高版本，因为旧版本中的正则表达式存在问题，现已解决。

1. 按ctrl h进入查找和替换模式

2. 选择正则表达式选项

3. 在“查找内容”字段中放置正则表达式

4. 在“替换为”字段中输入“

5. 点击全部替换

例

现场演示

https://regex101.com/r/cW9nC5/1

示范文本

<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>

更换后

<product>
  <name>bla1</name>
  <price>50$</price>
  <stock>yes</stock>
  <description>bla</description>
</product>

说明

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>'
----------------------------------------------------------------------

Answer 2

我想notepad ++会更容易，例如：

查找： <product>\\s+<name>.*?<\\/name>\\s+<price>.*?<\\/price>\\s+<stock>no<\\/stock>\\s+<description>.*?\\/description>\\s+<\\/product>
替换：一无所有

---

DEMO

https://regex101.com/r/fH0mM7/1

---

注意

确保检查底部的Regular Expression

Answer 3

您可以使用以下代码使用PHP进行此操作

<?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');
    ?>