PSArchiveItemByDate.psm1
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Set-StrictMode -Version Latest $ErrorActionPreference = "Stop" $Script:ArchiveDirName = "Archive" class ArchiveItemByDateException : Exception { ArchiveItemByDateException([String]$Message) : base([String]$Message) {} } class ArchiveDirNotFoundException : ArchiveItemByDateException { ArchiveDirNotFoundException([String]$Message) : base([String]$Message) {} } class RootDirCannotArchiveException : ArchiveItemByDateException { RootDirCannotArchiveException([String]$Message) : base([String]$Message) {} } class InvalidDateException : ArchiveItemByDateException { InvalidDateException([String]$Message) : base([String]$Message) {} } class SourcePath { [String]$Path SourcePath($Path) { $this.Path = $Path } hidden [String]GetArchiveDirectoryInPath() { <# .SYNOPSIS Get the Archive directory from the path. #> $Local:Path = $this.Path while ($Local:Path.Length -gt 0) { $Name = Split-Path $Local:Path -Leaf if ($Name -ceq $Script:ArchiveDirName) { return $Local:Path } $Local:Path = Split-Path $Local:Path -Parent } throw [ArchiveDirNotFoundException]::new('Archive directory not found in path.') } hidden [bool]IsArchived() { <# .SYNOPSIS If the path is Archived, return True. #> try { $this.GetArchiveDirectoryInPath() return $true } catch [ArchiveDirNotFoundException] { return $false } } hidden [String]GetArchiveDirectory() { <# .SYNOPSIS Get the Archive directory for that path. #> if ($this.IsArchived()) { return $this.GetArchiveDirectoryInPath() } else { $ParentDir = Split-Path $this.Path -Parent if ($ParentDir.Length -eq 0) { throw [RootDirCannotArchiveException] } return Join-Path $ParentDir $Script:ArchiveDirName } } hidden [System.Object]GetDateFromBeginningOfName() { <# .SYNOPSIS Get Date from the beginning of the file name. #> $Name = Split-Path $this.Path -Leaf if ($Name.Length -eq $this.Path.Length) { throw [RootDirCannotArchiveException]::new('Root directory cannot archive.') } if ($Name -match "^(?<Year>\d{4})(?<Month>\d{2})(?<Day>\d{2})\D") { try { return Get-Date -Year $Matches.Year -Month $Matches.Month -Day $Matches.Day -Hour 0 -Minute 0 -Second 0 -Millisecond 0 } catch { throw [InvalidDateException]::new("Invalid date found.") } } throw [InvalidDateException]"Date string not found." } [String]GetDestinationDirectory() { <# .SYNOPSIS Get the destination directory. #> $Now = Get-Date try { $Date = $this.GetDateFromBeginningOfName() } catch [InvalidDateException] { return '' } try { $ArchiveDir = $this.GetArchiveDirectory() } catch [RootDirCannotArchiveException] { return '' } if ($Date.Year -lt $Now.Year) { $ArchiveDir = Join-Path $ArchiveDir (Get-Date $Date -Format 'yyyy') } return Join-Path $ArchiveDir (Get-Date $Date -Format 'yyyyMM') } } function Move-ItemToArchiveDirectoryByDateInName { <# .SYNOPSIS Move the file to a directory for archiving. .DESCRIPTION If the first eight characters of a file's name express a date, move the file to a directory for archiving. #> [CmdletBinding(SupportsShouldProcess)] param( [String[]] [Parameter(Mandatory,ValueFromRemainingArguments)] $Path ) $Path | ForEach-Object { $AbsPath = Resolve-Path $_ $SourcePath = [SourcePath]::new($AbsPath) $DestDir = $SourcePath.GetDestinationDirectory() if ($DestDir -ne '') { New-Item -ItemType Directory -Force $DestDir Move-Item -Path $AbsPath -Destination $DestDir } } } Export-ModuleMember -Function Move-ItemToArchiveDirectoryByDateInName |