🎨 Prompt and block installation when a workspace exists in the Windows desktop installation path https://github.com/siyuan-note/siyuan/issues/14864

app/nsis/installer.nsh

@@ -12,6 +12,15 @@ Caption "${PRODUCT_NAME} ${VERSION}"
     nsExec::Exec 'TASKKILL /F /IM "SiYuan-Kernel.exe"'
 !macroend
 
+!macro customInit
+    ${FindIt} "$INSTDIR" "data" $R0
+    ${If} -1 != $R0
+        MessageBox MB_ICONSTOP "检测到安装路径下包含了工作空间数据 $R0，请将工作空间文件夹移到其他位置后再试。$\n$\n\
+            The workspace data $R0 was detected in the installation path, please move the workspace folder to another location and try again.$\n"
+        Quit
+    ${EndIf}
+!macroend
+
 !macro customUnInit
     ${un.FindIt} "$INSTDIR" "data" $R0
     ${If} -1 != $R0
@@ -98,6 +107,72 @@ Push $R6
   StrCmp $R3 0 0 nextDir
   StrCpy $R0 $R6
 
+Pop $R6
+Pop $R5
+Pop $R4
+Pop $R3
+Pop $R2
+Pop $R1
+Exch $R0
+FunctionEnd
+
+# 只能重复实现一遍，因为 un.FindIt 只能用在卸载过程中，这是 nsis 的命名限制
+!macro FindIt In For Result
+Push "${In}"
+Push "${For}"
+ Call FindIt
+Pop "${Result}"
+!macroend
+!define FindIt "!insertmacro FindIt"
+
+Function FindIt
+Exch $R0
+Exch
+Exch $R1
+Push $R2
+Push $R3
+Push $R4
+Push $R5
+Push $R6
+
+ StrCpy $R6 -1
+ StrCpy $R3 1
+
+ Push $R1
+
+ nextDir:
+  Pop $R1
+  IntOp $R3 $R3 - 1
+  ClearErrors
+   FindFirst $R5 $R2 "$R1\*.*"
+
+ nextFile:
+  StrCmp $R2 "." gotoNextFile
+  StrCmp $R2 ".." gotoNextFile
+
+  StrCmp $R2 $R0 0 isDir
+   StrCpy $R6 "$R1\$R2"
+   loop:
+    StrCmp $R3 0 done
+     Pop $R1
+     IntOp $R3 $R3 - 1
+     Goto loop
+
+ isDir:
+
+  IfFileExists "$R1\$R2\*.*" 0 gotoNextFile
+  IntOp $R3 $R3 + 1
+  Push "$R1\$R2"
+
+ gotoNextFile:
+  FindNext $R5 $R2
+  IfErrors 0 nextFile
+
+ done:
+  FindClose $R5
+  StrCmp $R3 0 0 nextDir
+  StrCpy $R0 $R6
+
 Pop $R6
 Pop $R5
 Pop $R4