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MacOS：如何根据文件名在 XML 文件中插入一行？

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MacOS：如何根据文件名在 XML 文件中插入一行？

我无法访问纯 Linux 盒子。我有一堆缺少文件名标注行的 XML 文件。我需要将该行插入到 XML 文件中的特定位置，并通过一个小的转换根据 XML 文件的文件名生成文件名标注。

例子：

24ToLife_AFamilyDivided_191045_DANY.xml 有

<description>Entrepreneur James overcame unconscionable childhood abuse before the sins of his past came back to haunt him.</description>
<media:rating>TV-14</media:rating>

我需要它来阅读：

<description>Entrepreneur James overcame unconscionable childhood abuse before the sins of his past came back to haunt him.</description>
<media:content url="24ToLife_AFamilyDivided_191045.mpg" type="video/mpg" expression="full" />
<media:rating>TV-14</media:rating>

答案1

我刚刚在 MacOS High Sierra 中编写并测试：

#!/bin/sh

for fl in *.xml
do
    filename=$(echo $fl | cut -f 1 -d '.' | sed 's/_DANY$//')

    sed -i .orig '1a\
    <media:content url="'$filename'.mpg" type="video/mpg" expression="full" /> \
    ' $fl
done

ls *.xml     search in current directory
-i .orig     backup of original files with suffix
'1a ..'      insert into second line

sedMacOS 中的BSD与 GNU 有一些不同sed，因此以下表达式必须写在单独的行中：

'1a \        # backslash and newline
 some text'

换行符\n无法识别，所以你应该写：

'1a \
some text   # newline here
'

代替：

'1a \
some text\n'

用法：

yurijs-MacBook-Pro:sed yurij$ cat *.xml
<description>Entrepreneur James overcame unconscionable childhood abuse before the sins of his past came back to haunt him.</description>
<media:rating>TV-14</media:rating>
<description>Entrepreneur James overcame unconscionable childhood abuse before the sins of his past came back to haunt him.</description>
<media:rating>TV-14</media:rating>
yurijs-MacBook-Pro:sed yurij$ ./cli
yurijs-MacBook-Pro:sed yurij$ cat *.xml
<description>Entrepreneur James overcame unconscionable childhood abuse before the sins of his past came back to haunt him.</description>
<media:content url="24ToLife_AFamilyDivided_191045.mpg" type="video/mpg" expression="full" />
<media:rating>TV-14</media:rating>
<description>Entrepreneur James overcame unconscionable childhood abuse before the sins of his past came back to haunt him.</description>
<media:content url="tt.mpg" type="video/mpg" expression="full" />
<media:rating>TV-14</media:rating>

答案2

这是一个 python 脚本，应该可以完成您想要的操作：

#!/usr/bin/env python
# -*- encoding: ascii -*-
"""insert_xml.py"""

import sys
from bs4 import BeautifulSoup as Soup

# Get the filename from the command-line
filename = sys.argv[1]

with open(filename, 'r') as xmlfile:

    # Parse the file
    soup = Soup(xmlfile.read(), "html.parser")

    # Search for "description" tags
    for element in soup.findAll("description"):

        # Check to see if the "media:content" element is missing
        if element and not element.find_next_sibling("media:content"):

            # If so, construct a new "media:content" tag
            new_tag = soup.new_tag('media:content')
            new_tag["url"] = filename
            new_tag["type"] = "video/mpg"
            new_tag["expression"] = "full"

            # Insert the "media:content" tag after the "description" tag
            element.insert_after(new_tag)

    # Print the modified XML document - one element per line
    for element in soup.findAll():
        print(element)

下面是它的实际效果：

$ python insert_xml.py in.xml

<description>Entrepreneur James overcame unconscionable childhood abuse before the sins of his past came back to haunt him.</description>
<media:content expression="full" type="video/mpg" url="in.xml"></media:content>
<media:rating>TV-14</media:rating>

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