How can I source variables from a .bat file into a PowerShell script?

Question

I\'m replacing parts of a .bat script with PowerShell. Configuration for the batch files is done via files that set appropriate environment variables. I\'m look

Answer 1

The preferred option would be to change the configuration to a .ps1 file and change the variable definitions to PowerShell syntax:

$VAR_ONE = 'some_value'
$VAR_TWO = '/other-value'

Then you'll be able to dot-source the file:

. filename.ps1

If you want to stick with the format you currently have, you'll have to parse the values, e.g. like this:

Select-String '^set ([^=]*)=(.*)' .\filename.bat | ForEach-Object {
    Set-Variable $_.Matches.Groups[1].Value $_.Matches.Groups[2].Value
}

Note: The above won't work in PowerShell versions prior to v3. A v2-compatible version would look like this:

Select-String '^set ([^=]*)=(.*)' .\filename.bat | ForEach-Object {
    $_.Matches
} | ForEach-Object {
    Set-Variable $_.Groups[1].Value $_.Groups[2].Value
}