code-page.psm1
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Set-StrictMode -Version Latest Set-Variable -Name all -Option Constant -Value "All" Set-Variable -Name identifier -Option Constant -Value "Identifier" Set-Variable -Name name -Option Constant -Value "Name" Set-Variable -Name information -Option Constant -Value "Information" Set-Variable -Name def -Option Constant -Value "Default" Set-Variable -Name exact -Option Constant -Value "Exact" Set-Variable -Name fuzzy -Option Constant -Value "Fuzzy" function Find-CodePageIdentifierExact { param ( [Parameter(Mandatory)][String]$Search, [Parameter(Mandatory)][Object[]]$CodePages ) foreach ($cp in $CodePages) { if ($cp.Identifier -ceq $Search) { $cp return } } $null return } function Find-CodePageIdentifierFuzzy { param ( [Parameter(Mandatory)][String]$Search, [Parameter(Mandatory)][Object[]]$CodePages ) $candidates = @() foreach ($cp in $CodePages) { if ($cp.Identifier -like "*$Search*") { $candidates += $cp } } $candidates return } function Find-CodePageNameExact { param ( [Parameter(Mandatory)][String]$Search, [Parameter(Mandatory)][Object[]]$CodePages ) foreach ($cp in $CodePages) { if ($cp.'.NET Name' -ceq $Search) { $cp return } } $null return } function Find-CodePageNameFuzzy { param ( [Parameter(Mandatory)][String]$Search, [Parameter(Mandatory)][Object[]]$CodePages ) $candidates = @() foreach ($cp in $CodePages) { if ($cp.'.NET Name' -like "*$Search*") { $candidates += $cp } } $candidates return } function Find-CodePageInfomationExact { param ( [Parameter(Mandatory)][String]$Search, [Parameter(Mandatory)][Object[]]$CodePages ) foreach ($cp in $CodePages) { if ($cp.'Additional information' -ceq $Search) { $cp return } } $null return } function Find-CodePageInfomationFuzzy { param ( [Parameter(Mandatory)][String]$Search, [Parameter(Mandatory)][Object[]]$CodePages ) $candidates = @() foreach ($cp in $CodePages) { if ($cp.'Additional information' -like "*$Search*") { $candidates += $cp } } $candidates return } function Add-Spaces { param ( [Parameter(Mandatory)][AllowEmptyString()][AllowNull()][String]$Message, [Parameter(Mandatory)][Int]$Width, [Parameter(Mandatory)][ValidateSet("Left", "Right")][String]$Side ) $l = if ($null -eq $Message) { 0 } else { $Message.Length } $n = $Width - $l switch ($Side) { "Left" { "$(' ' * $n)$Message" } "Right" { "$Message$(' ' * $n)" } } } function Invoke-Chcp { param ( [Parameter(Mandatory)][PSCustomObject]$CodePage, [Bool]$DryRun = $false ) if ($DryRun) { Write-Host "chcp $($CodePage.Identifier)" return } chcp $CodePage.Identifier } # Export # .SYNOPSIS # Set code page with its name. function Set-CodePage() { [CmdletBinding()] param ( [Parameter(Mandatory)][String]$Search, [ValidateSet("All", "Identifier", "Name", "Information")][String]$Target = $all, [ValidateSet("Default", "Exact", "Fuzzy")][String]$Way = $def, [Switch]$DryRun = $false ) $ErrorActionPreference = 'Stop' $codePages = Import-Csv "$($MyInvocation.MyCommand.Module.ModuleBase)\code-page.csv" $targets = switch ($Target) { $all { @($identifier, $name, $information) } Default { @($Target)} } $candidates = @() foreach ($t in $targets) { switch ($t) { $identifier { switch ($Way) { $fuzzy { $cps = Find-CodePageIdentifierFuzzy $Search $codePages $candidates += $cps } Default { $cp = Find-CodePageIdentifierExact $Search $codePages if ($null -ne $cp) { Invoke-Chcp -CodePage $cp -DryRun $DryRun return } } } } $name { switch ($Way) { $exact { $cp = Find-CodePageNameExact $Search $codePages if ($null -ne $cp) { Invoke-Chcp -CodePage $cp -DryRun $DryRun return } } Default { $cps = Find-CodePageNameFuzzy $Search $codePages $candidates += $cps } } } $information { switch ($Way) { $exact { $cp = Find-CodePageInfomationExact $Search $codePages if ($null -ne $cp) { Invoke-Chcp -CodePage $cp -DryRun $DryRun return } } Default { $cps = Find-CodePageInfomationFuzzy $Search $codePages $candidates += $cps } } } } } $candidates = $candidates | ForEach-Object { [PSCustomObject]@{ id = [Int]::Parse($_.Identifier); original = $_ } } | Sort-Object -Property id | Get-Unique -AsString | ForEach-Object { $_.original } if ($null -eq $candidates) { Write-Warning "no code page found" return } $max = $candidates.Length - 1 (0 .. $max) | ForEach-Object { $id = $candidates[$_].Identifier $name = $candidates[$_].'.NET Name' $info = $candidates[$_].'Additional information' Write-Host "$(Add-Spaces -Message $_ -Width 3 -Side Left): $(Add-Spaces -Message $id -Width 5 -Side Left) $(Add-Spaces -Message $name -Width 23 -Side Right) $info" } $choice = Read-Host "Enter the number which you select $(if (0 -eq $max) { '[0]' } else { "[0-$max]" })" Invoke-Chcp -CodePage $candidates[$choice] -DryRun $DryRun } # .SYNOPSIS # Lists code pages. function Show-CodePages() { [CmdletBinding()] param () $ErrorActionPreference = 'Stop' Import-Csv "$($MyInvocation.MyCommand.Module.ModuleBase)\code-page.csv" } Export-ModuleMember ` -Function ` Set-CodePage, ` Show-CodePages |