How to extract environment path lines with conditions? - powershell

Question

In short: How to get joined lines which not matches any string item of an array?
It seems trivial but I can't find solution. I'm trying to manage VSCode Python environments with PowerShell functions. I use PowerShell script to change vscode terminal path settings with ease. I want to get environment path lines which is not a Python path.
$noPythonPath = ($env:path.Split(';') | Where-Object {
$_ -notmatch 'python' -and
$_ -notmatch 'anaconda' -and
$_ -notmatch 'django' -and
$_ -notmatch 'pspenv'
}) -join ';'
I wonder is there are way to do this without manually listing all the path keys. But below code does not work. Seems -match not work with string array.
$key = $PC2paths.Keys
$noPythonPath = ($env:path.Split(';') | Where-Object {
$_ -notmatch $key.TrimEnd('1234567890')
}) -join ';'
And below is containing codes.
$PC2paths = #{
'Anaconda3' = "C:\Program Files\Anaconda3\python.exe;C:\Program Files\Anaconda3\Scripts;";
'DjangoVenv2' = "C:\Users\user\source\repos\CsStudy\.virtualenvs\Djangovenv2\Scripts\python.exe;" ;
"pypy2" = "C:\pypy2-v5.9.0-win32\pypy2-v5.9.0-win32\pypy.exe;C:\pypy2-v5.9.0-win32\pypy2-v5.9.0-win32\bin;";
'python2' = "c:\python27\python.exe;C:\Python27\Scripts;";
'python3' = "C:\Program Files\Python36-32\python.exe;C:\Program Files\Python36-32\Scripts;";
'ropepython2' = "C:\Users\user\source\repos\rope\ropeTest1\ropeTest1\rope1\.vscode\ropePython\Scripts\python.exe;";
'pspenv1' = "C:\Users\user\source\repos\psptools\.virtualenvs\pspenv1\Scripts\python.exe;";
'RefreshEnvironment' = 'C:\Users\user\source\repos\CsStudy\.vscode\refreshenv.cmd';
}
function workon($environment) {
& cmd /k workon.bat $environment
}
function useEnv([string]$envName) {
$pathKey = $envName
$SettingsFilePath = (UpSearch . "settings.json")
if ($SettingsFilePath -eq "file not found") {
Write-Output 'not found'
return
}
$key = $PC2paths.Keys
$noPythonPath = ($env:path.Split(';') | Where-Object {
$_ -notmatch $key.TrimEnd('1234567890')
}) -join ';'
$newpaths = (($PC2paths.$pathKey) + $noPythonPath)
$newpaths = $newpaths.split(';')
$exepath = $newpaths[0]
$newpaths[0] = Split-Path $newpaths[0]
$ofs = ';'
$newpath = "$newpaths"
$env:path = $newpath
$a = Get-Content $SettingsFilePath -Raw | ConvertFrom-Json
$a."python.pythonPath" = $exepath
$a."terminal.integrated.env.windows" | Add-Member -Name "path" -Value $newpath -MemberType NoteProperty -Force
$a | ConvertTo-Json -Depth 30 | Set-Content $SettingsFilePath
# $refresh = UpSearch . "RefreshEnv.cmd"
$refresh = $PC2paths."RefreshEnvironment"
cmd /c $refresh
}
function useAnaconda3 {
useEnv -envName 'Anaconda3'
}
function useDjangoVenv2 {
useEnv -envName 'DjangoVenv2'
}
function usePypy2 {
useEnv -envName 'pypy2'
}
function usePython2 {
useEnv -envName 'python2'
}
function usePython3 {
useEnv -envName 'python3'
}
function useropepython2 {
useEnv -envName 'ropepython2'
}
function usepspenv1 {
useEnv -envName 'pspenv1'
}
function UpSearch($pathtosearch, $filename) {
if ($pathtosearch -eq "") {
"file not founded"
return
}
$pathtosearch = (Get-Item -Path $pathtosearch -Verbose).FullName
if (Test-Path "$pathtosearch\.vscode\$filename" ) {
"$pathtosearch\.vscode\$filename"
} else {
UpSearch (Split-Path $pathtosearch) $filename
}
}

Answer 1

Correct, -match (as well as -notmatch) does not work with an array as the second operand. You can join the array to an alternation regular expression, though:
$a = 'foo', 'bar', 'baz'
$re = ($a | ForEach-Object { [regex]::Escape($_) }) -join '|'
'something', 'bar', 'else' -notmatch $re