How to preserve a file if it exists?

wrybreadMarch 9, 2010 at 11:53 PM#

How to preserve a file if it exists?

I found this recent thread describing how to detect if a file exists:

NSIS Check if directory exists - Winamp & Shoutcast Forums

http://forums.winamp.com/showthread.php?s=&threadid=248525

Are you a developer who uses NSIS to distribute your application? Are you a Winamp plug-in developer who wants to use NSIS to distribute your plug-in? Have suggestions for other people like you? This is the place.

That's a part of what I'm trying to do, but I need to check if a file exists (configuration.ini), and if it does, not overwrite it. I'm packing my files like this:

File /r "C:\myfiles\*"

In other words, I'm packing every file in the source directory, including configuration.ini. What I don't understand is how to skip overwriting configuration.ini on the target computer if the file is present there.

Does anything occur to anyone?

redxiiMarch 10, 2010 at 5:09 AM#

Re: How to preserve a file if it exists?

Here is one method:



File /r /x configuration.ini "C:\myfiles\*"



SetOverwrite off

File "C:\myfiles\configuration.ini"

SetOverwrite on

This excludes configuration.ini so you can single it out with SetOverwrite.

wrybreadMarch 10, 2010 at 5:26 AM#edited March 10, 2010 at 5:59 AM

Thank you! Works perfectly.