问题的搜索和替换批处理文件 [英] Problem with search and replace batch file

问题描述

我有一个XML文件，我有一个批处理文件来搜索该文件内的特定的字符串，与由用户定义的字符串替换它，然后将它输出到一个新的XML文件：

I have an XML file and I have a batch file to search for a specific string within that file, replace it with a string defined by the user and then output it to a new XML file:

@echo off > entities_1.xml
setLocal EnableDelayedExpansion

if exist entities_1.xml del entities_1.xml
set /p name= What is the new space NAME?

for /f "tokens=* delims= " %%G in (entities.xml) do (
set str=%%G
set str=!str:[Test Space]=[%name%]!
echo !str! >> entities_1.xml
)

这工作和[测试空间]的任何实例与用户定义的值替换。

This works and any instances of [Test Space] are replaced with the value defined by the user.

我的问题，然而，就是该批处理文件也剥出感叹号的实例（！）标记。因此，例如在XML有类似于此行：

My issue, however, is that the batch file is ALSO stripping out instances of exclamation (!) marks. So for example in the XML there are lines similar to this:

<property name="title"><![CDATA[TEST2]]></property>

在运行该批处理脚本，它与替换上面：

When the batch script is run, it is replacing the above with:

<property name="title"><[CDATA[TEST2]]></property>

即。剥出！

我在哪里去了？任何想法？

Where am I going wrong? Any ideas?

推荐答案

这是由设置STR容纳线的方式不对= %%摹而推迟扩充被启用。结果
这是因为延迟的扩张阶段是%% V扩展阶段之后。

It's the wrong way of receiving a line by set str=%%G while the delayed expansion is enabled.
It's because the delayed expansion phase is after the %%v expansion phase.

使用禁用延迟扩展你有问题，你不能替换字符串在一个安全的方式。
所以，你必须切换延迟扩展。

With disabled delayed expansion you got the problem, that you can not replace the string in a safe way. So you have to toggle the delayed expansion.

@echo off > entities_1.xml
setLocal DisableDelayedExpansion

if exist entities_1.xml del entities_1.xml
set /p name= What is the new space NAME?

for /f "tokens=* delims= " %%G in (entities.xml) do (
    set str=%%G
    setLocal EnableDelayedExpansion
    set str=!str:[Test Space]=[%name%]!
    >> entities_1.xml echo(!str!
    endlocal
)

切换重定向，所以你并不总是追加的空间。结果
使用回声（，让您得到的回声是如果！STR！是空的。

Switching the redirection, so you didn't append always a space.
Using echo(, so you get not echo is on if the !str! is empty.

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