private/Core.ps1
${Script:/} = [System.IO.Path]::DirectorySeparatorChar $Script:fwd = 'fwd' $Script:back = 'back' enum CycleDirection { Undo; Redo } $Script:cycleDirection = [CycleDirection]::Undo # used by Step-Back function DefaultIfEmpty([scriptblock] $default) { Begin { $any = $false } Process { if ($_) {$any = $true; $_} } End { if (!$any) {&$default} } } filter IsRootedOrRelative { ($_ | IsRooted) -or ($_ | IsRelative) } filter IsRooted { [System.IO.Path]::IsPathRooted($_) -or $_ -match '~(/|\\)*' # also consider the path rooted if it's relative to home } filter IsRelative { $_ -match '^+\.' # e.g. starts with ./, ../, ... } filter IsDescendedFrom($maybeAncestor) { (Resolve-Path $_ -ErrorAction Ignore) -like "$(Resolve-Path $maybeAncestor)*" } function NormaliseAndEscape($pathPart) { $pathPart | Normalise | Escape } filter Normalise { $_ -replace '/|\\', ${/} } filter Escape { [regex]::Escape($_) } filter RemoveSurroundingQuotes { ($_ -replace "^'", '') -replace "'$", '' } filter SurroundAndTerminate($trailChar) { if ($_ -notmatch ' |\[|\]') { "$_$trailChar" } else { "'$_$trailChar'" } } filter RemoveTrailingSeparator { $_ -replace "[/\\]$", '' } filter EscapeSquareBrackets { $_ -replace '\[', '`[' -replace ']', '`]' } function GetStackIndex([array]$stack, [string]$namepart) { $index = [array]::FindIndex( $stack, [Predicate[System.Management.Automation.PathInfo]] { ($leafName = $args[0] | Split-Path -Leaf) -and $leafName -match [regex]::Escape($namePart) }) if ($index -ge 0) { return $index } return [array]::FindIndex( $stack, [Predicate[System.Management.Automation.PathInfo]] { $args[0] -match (NormaliseAndEscape $namepart) }) } function IndexedComplete($items) { # accept input from parameter or from pipeline if (!$items) {$items = @(); $input | % {$items += $_}} $items | % { $itemText = if ($cde.MenuCompletion -and @($items).Count -gt 1) {"$($_.index)"} else {$_.long | SurroundAndTerminate} [Management.Automation.CompletionResult]::new( $itemText, "$($_.index). $($_.short)" , "ParameterValue", "$($_.index). $($_.long)" ) } } function RegisterCompletions([array] $commands, $param, $target) { Register-ArgumentCompleter -CommandName $commands -ParameterName $param -ScriptBlock $target } function WriteLog($message) { if ((Get-Variable cde) -and ($cde | Get-Member _logger)) { &$cde._logger $message } else { Write-Verbose $message } } # earlier versions of posh-git export '??' as a public alias, so we use ??? here function OrDefault ($default) { Begin { $any = $false } Process { if ($_) {$any = $true; $_} } End { if (!$any) {$default} } } |