Classes/ValidateFile.ps1
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class ValidateFile { ValidateFile() {} Static [System.IO.Fileinfo] Path([System.IO.Fileinfo] $path) { if ([string]::IsNullOrWhiteSpace($path)) {Throw [System.ArgumentNullException]::new()} if (-not (Test-Path -Path $path)) {Throw [System.IO.FileNotFoundException]::new()} if (-not (Test-Path $path -PathType Leaf)) {Throw "The Path argument must be a file. Folder paths are not allowed."} return $path } Static [System.IO.Fileinfo] Extension([System.IO.Fileinfo] $path, [String[]] $extension) { $regex = "({0})" -f ($extension.foreach( {"\." + $_}) -join '|') if ($path -notmatch $regex) {throw "The extension of the file specified must be either of: $extension"} return $path } Static [System.IO.Fileinfo] Size([System.IO.Fileinfo] $path, [double] $maxSizeInMB) { if ($path.Length / 1mb -gt $maxSizeInMB) {Throw "The Image file size can not be greater than 4MB"} return $path } } # [ValidateFile]::Path($path) # [ValidateFile]::Extension($path, @('jpg', 'png')) # [ValidateFile]::Size($path, 1) |