gpt4 book ai didi

xml - Inno Setup - 如何在特定行中保存节点

转载 作者:数据小太阳 更新时间:2023-10-29 02:03:57 35 4
gpt4 key购买 nike

我需要有关 inno 设置的帮助,我需要在特定行中保存一些 xml 节点,但我不知道如何操作。

这是我的代码

procedure SaveValueToXML(const AFileName, APath, AValue: string);
var
XMLNode: Variant;
XMLDocument: Variant;
begin
XMLDocument := CreateOleObject('Msxml2.DOMDocument.6.0');
try
XMLDocument.async := False;
XMLDocument.load(AFileName);
// if (XMLDocument.parseError.errorCode <> 0) then
// MsgBox('Install the software. ' +
// XMLDocument.parseError.reason, mbError, MB_OK)
// else
begin
XMLDocument.setProperty('SelectionLanguage', 'XPath');
XMLNode := XMLDocument.selectSingleNode(APath);
XMLNode.text := AValue;
XMLDocument.save(AFileName);
end;
except
MsgBox('Install the software', mbError, MB_OK);
end;
end;

function NextButtonClick(PageID: Integer): Boolean;
var
XMLFile: string;
begin
Result := True;
if (PageId = wpFinished) then
begin
XMLFile := ExpandConstant('{pf}\Hell\0\Config.xml');
if FileExists(XMLFile) then
begin
SaveValueToXML(XMLFile, '//@param', PEdit.Text); //PEdit.text is from a custom input text box in the installer, ignore.
SaveValueToXML(XMLFile, '//@path',
ExpandConstant('{reg:HKCU\SOFTWARE\Craps,InstallPath}\Test.exe'));
end;
end;
end;

这是我的 XML 文件:

<?xml version="1.0" encoding="UTF-8"?>
<stuffs>
<stuff ident="555" path="C:\Program Files (x86)\Other thing\Other.exe" param="-alive" display="1" priority="0"/>
<stuff ident="666" path="C:\Program Files (x86)\Craps\test.exe" param="-dead" display="1" priority="0"/>
</stuffs>

问题是我的脚本总是写在第一行。我需要的是始终将节点保存在以 <stuff ident="666" 开头的行中

提前致谢!

最佳答案

您将需要使用 setAttribute设置 text 属性的方法。下面是修改节点属性值的过程:

procedure SaveAttributeValueToXML(const AFileName, APath, AAttribute, 
AValue: string);
var
XMLNode: Variant;
XMLDocument: Variant;
begin
XMLDocument := CreateOleObject('Msxml2.DOMDocument.6.0');
try
XMLDocument.async := False;
XMLDocument.load(AFileName);
if (XMLDocument.parseError.errorCode <> 0) then
MsgBox('The XML file could not be parsed. ' +
XMLDocument.parseError.reason, mbError, MB_OK)
else
begin
XMLDocument.setProperty('SelectionLanguage', 'XPath');
XMLNode := XMLDocument.selectSingleNode(APath);
XMLNode.setAttribute(AAttribute, AValue);
XMLDocument.save(AFileName);
end;
except
MsgBox('An error occured!' + #13#10 + GetExceptionMessage,
mbError, MB_OK);
end;
end;

下面是如何查询ident参数值为666且param属性值将更改为-alive的节点:

SaveAttributeValueToXML('d:\File.xml', '//stuffs/stuff[@ident=''666'']',
'param', '-alive');

有关此处使用的 XPath 查询的更多信息,请参阅例如至 this article .

关于xml - Inno Setup - 如何在特定行中保存节点,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/15719138/

35 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com