xmlstarlet:过滤掉具有属性的元素

问题描述

如何过滤掉某些类型的元素，而这些元素没有具有魔法值的属性并保留文档的其余部分?所有这些都使用 xmlstarlet?

How to filter out elements of certain type which to not have an attribute with a magic value and retain the rest of the document? All this using xmlstarlet?

我要说的是:

cat << EOF > database.xml
<?xml version="1.0"?>
<database>

    <some name="A" />
    <some name="B" />
    <some name="C" />
    <text>this is some text to be applied...</text>
    <project>
        <test deeper="structure"/>
    </project>

</database>
EOF

和

xmlstarlet sel -t -m "*" -c "*[not(self::some[@name != 'A'])]" database.xml

收益

<some name="A"/><text>this is some text to be applied...</text><project>
        <test deeper="structure"/>
    </project>

但这隐藏了我宝贵的 tag.除了缩进，这不是问题......并且当 不是，例如 的子项.

But this hides my precious <database> tag. Besides the indentation, which is not a problem... And doesn't work when <some> are not a direct descendant of <database>, childs of <project> for example.

我想得到的是数据库，但所有<some>都被删除了除了名为A的那个:

What I want to get is the database as it is, but all <some> removed except the one named A:

<database>

    <some name="A" />


    <text>this is some text to be applied...</text>
    <project>
        <test deeper="structure"/>
    </project>

</database>

问候

推荐答案

不幸的是，xmlstarlet 的 sel 不支持 apply-templates，但您可以使用 ed 命令:

Unfortunately, xmlstarlet's sel doesn't support apply-templates, but you can use the ed command for this:

xmlstarlet ed -d '/database//some[@name != "A"]' input.xml

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