Powershell - Need to check if name is ended with a sign - powershell

Question

My script read a path from TFS and I add a string to it but before I need to verify that the path contains or not contains a sign
Example1:
This is the path, in this case I need to add '/database/'
$/Idu Client-Server/CoreBranches/V6.4/Patches/V8.6.22
Example2: I need to add only 'database/'
$/Idu Client-Server/CoreBranches/V6.4/Patches/V8.6.22/
Example3: I need to add '/'
$/Idu Client-Server/CoreBranches/V6.4/Patches/V8.6.22/database
The goal is to continue with the script with the path/database/
so I need to check first the path and then to add or remove the 'database' string
Anyone can help me with that please?

Answer 1

If I understand the question properly, you want to check if the path from TFS ends with a forward slash or not, so you would know what to append to it and for thast you could use a small helper function like this:
function Join-TFSPath {
[CmdletBinding()]
param (
[parameter(Mandatory = $true, Position = 0, ValueFromPipeline = $true)]
[ValidateNotNullOrEmpty()]
[string] $Path,
[parameter(Mandatory = $false, Position = 1)]
[string[]] $ChildPath,
[char]$Separator = '/'
)
if ($ChildPath.Count) {
"{0}$separator{1}$Separator" -f $Path.TrimEnd("\/"),
(($ChildPath | ForEach-Object { $_.Trim("\/") } |
Where-Object { $_ -match '\S' }) -join $Separator)
}
else {
"{0}$separator" -f $Path.TrimEnd("\/")
}
}
# test if you need to add `database` or not
$tfsPath = '$/Idu Client-Server/CoreBranches/V6.4/Patches/V8.6.22/database'
$folder = 'database'
if (($tfsPath.TrimEnd("\/") -split '[\\/]')[-1] -ne $folder) {
# use the function adding the $folder as ChildPath
Join-TFSPath -Path $tfsPath -ChildPath $folder
}
else {
# use the function without specifying the ChildPath so it will only ensure it
# ends with the chosen (or in this case default) separator character
Join-TFSPath -Path $tfsPath
}
As per your comment, you could perhaps then use a more dedicated helper function like:
function Append-TFSPath {
[CmdletBinding()]
param (
[parameter(Mandatory = $true, Position = 0, ValueFromPipeline = $true)]
[ValidateNotNullOrEmpty()]
[string] $Path,
[parameter(Mandatory = $false, Position = 1)]
[string] $ChildPath = 'database',
[char]$Separator = '/'
)
$Path = $Path -replace '[\\/]+$' # trim off final slash(es)
$ChildPath = $ChildPath -replace '^[\\/]|[\\/]$' -replace '\\', $Separator
if ([string]::IsNullOrWhiteSpace($ChildPath) -or ($Path -replace '\\', $Separator) -like "*$ChildPath") {
"{0}$separator" -f $Path
}
else {
"{0}$separator{1}$Separator" -f $Path, $ChildPath
}
}
Then, just send the path as you have received it to the function and it will return the path you want
$tfsPath = '$/Idu Client-Server/CoreBranches/V6.4/Patches/V8.6.22/database'
$folder = 'V8.6.22/database'
Append-TFSPath -Path $tfsPath -ChildPath $folder
# because 'database' is the default value for the ChildPath parameter, you can leave that out:
# Append-TFSPath -Path $tfsPath
Testcases:
Append-TFSPath -Path '$/Idu Client-Server/CoreBranches/V6.4/Patches/V8.6.22'
Append-TFSPath -Path '$/Idu Client-Server/CoreBranches/V6.4/Patches/V8.6.22/'
Append-TFSPath -Path '$/Idu Client-Server/CoreBranches/V6.4/Patches/V8.6.22/database'
Append-TFSPath -Path '$/Idu Client-Server/CoreBranches/V6.4/Patches/V8.6.22/database/'
will all return $/Idu Client-Server/CoreBranches/V6.4/Patches/V8.6.22/database/