如何使用 XDocument 保留所有 XML 格式？

发布于 2024-12-21 09:34:58 字数 571 浏览 0 评论 0原文

我正在尝试读取 XML 配置文件，进行一些调整（查找并删除或添加元素）并再次保存它。我希望此编辑尽可能不具有侵入性，因为文件将受到源代码控制，并且我不希望无关紧要的更改导致合并冲突等。这大致就是我遇到的问题

XDocument configDoc = XDocument.Load(fileName, LoadOptions.PreserveWhitespace);
// modifications to configDoc here
configDoc.Save(fileName, SaveOptions.DisableFormatting);

：此处：

encoding="utf-8" 添加到 xml 声明中。
更改为
为了便于阅读而分布在不同行上的属性被推送全部集中在一条线上。

有什么方法可以减少对 XDocument 的干扰，还是我必须尝试进行字符串编辑才能获得我想要的内容？

原文

I'm trying to read in an XML configuration file, do a few tweaks (finding and removing or adding an element) and save it again. I want this edit to be as non-intrusive as possible since the file will be under source control and I don't want inconsequential changes to cause merge conflicts, etc. This is roughly what I've got:

XDocument configDoc = XDocument.Load(fileName, LoadOptions.PreserveWhitespace);
// modifications to configDoc here
configDoc.Save(fileName, SaveOptions.DisableFormatting);

There's a few problems that pop up here:

encoding="utf-8" gets added to the xml declaration.
<tag attr="val"/> gets changed to <tag attr="val" />
Attributes that were spread across separate lines for readability get pushed all on to one line.

Is there any way to be less intrusive with XDocument or will I have to just try and do string editing to get what I want?

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绝影如岚 2024-12-28 09:34:58

LINQ to XML 对象模型不存储解析的元素是否标记为还是，因此在保存此类信息时丢失了。如果您想确保某种格式，那么您可以扩展 XmlWriter 实现并覆盖其 http://msdn.microsoft.com/en-us/library/system.xml.xmlwriter.writeendelement.aspx 但这样你也不会保留输入格式，而是你会写出所有空元素作为或您在方法中实现的任何格式。

还可能发生其他更改，例如加载文件

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:xhtml="http://www.w3.org/1999/xhtml">
  <head>
    <title>Example</title>
  </head>
  <body>
    <h1>Example</h1>
  </body>
</html>

并将其保存回结果时，

<xhtml:html xmlns="http://www.w3.org/1999/xhtml" xmlns:xhtml="http://www.w3.org/1999/xhtml">
  <xhtml:head>
    <xhtml:title>Example</xhtml:title>
  </xhtml:head>
  <xhtml:body>
    <xhtml:h1>Example</xhtml:h1>
  </xhtml:body>
</xhtml:html>

因此不要期望在使用 XDocument/XElement 加载/保存时保留标记详细信息。

The LINQ to XML object model does not store whether an element parsed is marked up as <foo/> or <foo /> so when saving back such information is lost. If you want to ensure a certain format then you could extend an XmlWriter implementation and override its http://msdn.microsoft.com/en-us/library/system.xml.xmlwriter.writeendelement.aspx but that way you would also not preserve the input format, rather you would then write out any empty elements as <foo/> or whatever format you implement in your method.

There are other changes that can happen, for instance when loading the file

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:xhtml="http://www.w3.org/1999/xhtml">
  <head>
    <title>Example</title>
  </head>
  <body>
    <h1>Example</h1>
  </body>
</html>

and saving it back the result is

<xhtml:html xmlns="http://www.w3.org/1999/xhtml" xmlns:xhtml="http://www.w3.org/1999/xhtml">
  <xhtml:head>
    <xhtml:title>Example</xhtml:title>
  </xhtml:head>
  <xhtml:body>
    <xhtml:h1>Example</xhtml:h1>
  </xhtml:body>
</xhtml:html>

so don't expect markup details to be preserved when loading/saving with XDocument/XElement.

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感情旳空白 2024-12-28 09:34:58

为了避免在文档标题中声明，您可以使用以下内容

    XmlWriterSettings settings = new XmlWriterSettings();
    settings.OmitXmlDeclaration = true;


        using (XmlWriter xw = XmlWriter.Create(fileName, settings))
        {
            doc.Save(xw);
        }

To avoid the declaration in the header of the document you can use the following

    XmlWriterSettings settings = new XmlWriterSettings();
    settings.OmitXmlDeclaration = true;


        using (XmlWriter xw = XmlWriter.Create(fileName, settings))
        {
            doc.Save(xw);
        }

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