创新设置:如何替换XML文件中的字符串? [英] Inno setup: how to replace a string in XML file?

问题描述

以下(引用)是XML文件的内容，该文件是我的软件包的一部分. 我想在安装过程中替换c:\path\myapp.exe的值(用用户选择安装应用程序的真实路径替换). 那可能吗?怎么做?

The following (in quote) is the content of a XML file which is part of my package. I'd like to replace the value of c:\path\myapp.exe during the installation (with the real path where the user chose to install the application. Is that possible? How to?

<?xml version="1.0" encoding="UTF-8"?>
<launchConfiguration type="org.eclipse.ui.externaltools.ProgramLaunchConfigurationType">
   <listAttribute key="org.eclipse.debug.ui.favoriteGroups">
      <listEntry value="org.eclipse.ui.externaltools.launchGroup"/>
   </listAttribute>
   <stringAttribute key="org.eclipse.ui.externaltools.ATTR_LAUNCH_CONFIGURATION_BUILD_SCOPE" value="${none}"/>
   <stringAttribute key="org.eclipse.ui.externaltools.ATTR_LOCATION" value="c:\path\myapp.exe"/>
   <stringAttribute key="org.eclipse.ui.externaltools.ATTR_TOOL_ARGUMENTS" value="${resource_loc}"/>
</launchConfiguration>

推荐答案

您最好的选择是使用XML DOM选择和编辑所需的节点

Your best option is to use the XML DOM to select and edit the required node as TLama suggested.

或者，您可以在要替换的位置安装带有已知字符串的模板文件. 然后可以将文件读取为字符串，进行修改，然后使用类似以下内容再次写回:

Alternatively, you can install a template file with a known string in the location you want to replace. The file can then be read as a string, modified and written back out again using something like:

[Code]
procedure WriteAppPath;
var
    FileData: String;
begin
    LoadStringFromFile(ExpandConstant('{app}\app.xml'), FileData);
    StringChange(FileData, 'XXXXXMARKERXXXXX', ExpandConstant('{app}'));
    SaveStringToFile(ExpandConstant('{app}\app.xml'), FileData, False);
end;

另请参见此问题有关对INI文件进行相同操作的问题.

See also this question about doing the same thing en masse to an INI file.

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