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Search for a File Inside a Merge Module

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Description

Sometimes I need to find if a file exists inside a merge module.  Since I don’t know which specific merge module I’m looking for, I wrote this script to iterate through every merge module in a specific folder to find a specific file in the File table.

Usage

CScript.exe {Script} {FileToSearchFor}

Const msiOpenDatabaseModeReadOnly = 0
Const msiOpenDatabaseModeTransact = 1
	 
'create WindowsInstaller.Installer object
dim oInstaller : Set oInstaller = CreateObject("WindowsInstaller.Installer")
dim fileName : fileName = wscript.arguments(0)

Const ForReading = 1
Const ForWriting = 2

sFolder = "C:\Program Files\InstallShield\2013\Objects"
Set oFSO = CreateObject("Scripting.FileSystemObject")

For Each oFile In oFSO.GetFolder(sFolder).Files
 
	'open the MSI (the first argument supplied to the vbscript)
	Dim oDatabase : Set oDatabase = oInstaller.OpenDatabase(oFile.Path,msiOpenDatabaseModeReadOnly) 
	 
	'create a view of the registry we want to see
	Dim sql : sql = "SELECT `FileName` FROM `File`"
	Dim regView : Set regView = oDatabase.OpenView(sql)
	 
	'execute the query
	regView.Execute 
	 
	'fetch the first row of data (if there is one!)
	Dim regRecord : Set regRecord = regView.Fetch
	 
	'whilst we've returned a row and therefore regRecord is not Nothing
	While Not regRecord Is Nothing
	 
		'print out the registry key
		If instr(regRecord.StringData(1),fileName) > 0 Then		
			wscript.echo "File " & fileName & " is in MSM: " & oFile.Path
		End If
	 
		'go and fetch the next row of data	
		Set regRecord = regView.Fetch
	Wend
	 
	regView.Close
	Set regView = Nothing
	Set regRecord = Nothing
	Set oDatabase = Nothing
	

Next

Set oInstaller = Nothing
Set oFSO = Nothing

 

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