Update README.md

[Graybriel]

added the syntax for using powershell as compared to having to download curl for windows

[eniklas]

@Graybriel when I put this in a .bat file and run it, I get:

Invoke-WebRequest : The process cannot access the file 'C:\ProgramData\GOG.com\Galaxy\storage\galaxy-2.0.db' because
it is being used by another process.
At line:1 char:1
+ Invoke-WebRequest -Method Post -Uri http://<my-url>/compa ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Invoke-WebRequest], IOException
    + FullyQualifiedErrorId : System.IO.IOException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand

Is there a way to force it to read an open file?

[derek-keeler]

@Graybriel when I put this in a .bat file and run it, I get:

...

Is there a way to force it to read an open file?

Try adding -UseBasicParsing as I suspect the IE rules underlying the Invoke-WebRequest is being a prude.

Or, alternatively, try using Invoke-RestMethod -Method Post -Uri "https://<your-gamatrix-url>/compare?option=upload" -InFile "C:\ProgramData\GOG.com\Galaxy\storage\galaxy-2.0.db" which may get around those restrictions for other reasons.

[derek-keeler]

It hurts me deeply, in my heart, that you put this into a .bat file and not just running it from a pwsh shell directly in the new Windows Terminal program.

We make these things for you. Why won't you let us love you?

[eniklas]

@Graybriel when I put this in a .bat file and run it, I get: ... Is there a way to force it to read an open file?

Try adding -UseBasicParsing as I suspect the IE rules underlying the Invoke-WebRequest is being a prude.

Or, alternatively, try using Invoke-RestMethod -Method Post -Uri "https://<your-gamatrix-url>/compare?option=upload" -InFile "C:\ProgramData\GOG.com\Galaxy\storage\galaxy-2.0.db" which may get around those restrictions for other reasons.

No luck with either of those options.

It hurts me deeply, in my heart, that you put this into a .bat file and not just running it from a pwsh shell directly in the new Windows Terminal program.

We make these things for you. Why won't you let us love you?

I guess because I don't know how to do that. Is that done by using another extension, e.g. ps1? And, will that incur restrictions that a .bat file doesn't, as happened when I originally set this up? Back then, I couldn't get a .ps1 file to execute without a bunch of red tape the user would have to go through every time they ran it.

[derek-keeler]

@Graybriel when I put this in a .bat file and run it, I get: ... Is there a way to force it to read an open file?

Try adding -UseBasicParsing as I suspect the IE rules underlying the Invoke-WebRequest is being a prude. Or, alternatively, try using Invoke-RestMethod -Method Post -Uri "https://<your-gamatrix-url>/compare?option=upload" -InFile "C:\ProgramData\GOG.com\Galaxy\storage\galaxy-2.0.db" which may get around those restrictions for other reasons.

No luck with either of those options.

It hurts me deeply, in my heart, that you put this into a .bat file and not just running it from a pwsh shell directly in the new Windows Terminal program. We make these things for you. Why won't you let us love you?

I guess because I don't know how to do that. Is that done by using another extension, e.g. ps1? And, will that incur restrictions that a .bat file doesn't, as happened when I originally set this up? Back then, I couldn't get a .ps1 file to execute without a bunch of red tape the user would have to go through every time they ran it.

I've tried multiple attempts at reading a file when another process has "locked" it and failed (in Windows). The fact seems to hold that if the calling process says to Windows "do not share" then Windows listens. I cannot find Win32 or other docs supporting this theory though.

However:

If I do this in an Admistrator PowerShell terminal:

> Set-ExecutionPolicy -Scope CurrentUser Default
> Invoke-WebRequest -Method Post -Uri "http://games.erikniklas.net/compare?option=upload" -InFile "C:\ProgramData\GOG.com\Galaxy\storage\galaxy-2.0.db"

It works! (When GOG is not running!)

When I run:

> Set-ExecutionPolicy -Scope CurrentUser Default
> Invoke-WebRequest -Method Post -Uri "http://games.erikniklas.net/compare?option=upload" -InFile "C:\ProgramData\GOG.com\Galaxy\storage\galaxy-2.0.db"

It fails with the same error you have outlined above, when GOG is running.

Try running this yourself when GOG is not running (ensure by checking task manager in Windows) and let me know if that is the case and I'll suggest an enhance set of docs.

[derek-keeler]

See this discussion regarding Python in general to get an idea how PowerShell might get in your way a bit. See the part on "1. Create and activate the virtual environment" for details...

[Graybriel]

copying the file first, works while GOG is running, but it's not elegant;

if (-not (Test-Path -Path "C:\ProgramData\GOG.com\Galaxy\storage\gamatrix")) { mkdir -Path "C:\ProgramData\GOG.com\Galaxy\storage\gamatrix" }

Copy-Item -Path "C:\ProgramData\GOG.com\Galaxy\storage\galaxy-2.0.db" -Destination "C:\ProgramData\GOG.com\Galaxy\storage\gamatrix\galaxy-2.0.db" -Force Invoke-WebRequest -Method Post -Uri "http://<>/compare?option=upload" -InFile "C:\ProgramData\GOG.com\Galaxy\storage\gamatrix\galaxy-2.0.db"

[eniklas]

copying the file first, works while GOG is running, but it's not elegant;

if (-not (Test-Path -Path "C:\ProgramData\GOG.com\Galaxy\storage\gamatrix")) { mkdir -Path "C:\ProgramData\GOG.com\Galaxy\storage\gamatrix" }

Copy-Item -Path "C:\ProgramData\GOG.com\Galaxy\storage\galaxy-2.0.db" -Destination "C:\ProgramData\GOG.com\Galaxy\storage\gamatrix\galaxy-2.0.db" -Force Invoke-WebRequest -Method Post -Uri "http://<>/compare?option=upload" -InFile "C:\ProgramData\GOG.com\Galaxy\storage\gamatrix\galaxy-2.0.db"

So Copy-Item is fine reading the open file, more evidence that it's a limitation of Invoke-WebRequest.

[eniklas]

Per our discussion on Discord:

• curl is available in Windows by default, no need to install it
• when using powershell, curl is aliased to Invoke-WebRequest, which won't work as it has different arguments; using curl.exe uses the actual curl
• we weren't able to find a way to get Invoke-WebRequest to work with an open file

I updated the PR to remove the powershell option, and removed the instruction to download curl.

@Graybriel I think a .ps1 file would look exactly like the .bat file, except it must use curl.exe to work, so I just left the .bat file in there. If you know of an advantage to using a .ps1 file I'm good to put it back in.