www.aleph1.co.uk Git - yaffs-website/blob - node_modules/gulp/completion/powershell

   1 # Copyright (c) 2014 Jason Jarrett
   2 #
   3 # Tab completion for the `gulp`
   4 #
   5 # Usage:
   6 #
   7 # To enable powershell <tab> completion for gulp you need to be running
   8 # at least PowerShell v3 or greater and add the below to your $PROFILE
   9 #
  10 #     Invoke-Expression ((gulp --completion=powershell) -join [System.Environment]::NewLine)
  11 #
  12 #
  13
  14 $gulp_completion_Process = {
  15     param($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameter)
  16
  17
  18         # Load up an assembly to read the gulpfile's sha1
  19         if(-not $global:GulpSHA1Managed) {
  20                 [Reflection.Assembly]::LoadWithPartialName("System.Security") | out-null
  21                 $global:GulpSHA1Managed = new-Object System.Security.Cryptography.SHA1Managed
  22         }
  23
  24         # setup a global (in-memory) cache
  25         if(-not $global:GulpfileShaCache) {
  26                 $global:GulpfileShaCache = @{};
  27         }
  28
  29         $cache = $global:GulpfileShaCache;
  30
  31         # Get the gulpfile's sha1
  32         $sha1gulpFile = (resolve-path gulpfile.js -ErrorAction Ignore | %{
  33                 $file = [System.IO.File]::Open($_.Path, "open", "read")
  34                 [string]::join('', ($global:GulpSHA1Managed.ComputeHash($file) | %{ $_.ToString("x2") }))
  35                 $file.Dispose()
  36         })
  37
  38         # lookup the sha1 for previously cached task lists.
  39         if($cache.ContainsKey($sha1gulpFile)){
  40                 $tasks = $cache[$sha1gulpFile];
  41         } else {
  42                 $tasks = (gulp --tasks-simple).split("`n");
  43                 $cache[$sha1gulpFile] = $tasks;
  44         }
  45
  46
  47     $tasks |
  48         where { $_.startswith($commandName) }
  49         Sort-Object |
  50         foreach { New-Object System.Management.Automation.CompletionResult $_, $_, 'ParameterValue', ('{0}' -f $_) }
  51 }
  52
  53 if (-not $global:options) {
  54     $global:options = @{
  55         CustomArgumentCompleters = @{};
  56         NativeArgumentCompleters = @{}
  57     }
  58 }
  59
  60 $global:options['NativeArgumentCompleters']['gulp'] = $gulp_completion_Process
  61 $function:tabexpansion2 = $function:tabexpansion2 -replace 'End\r\n{','End { if ($null -ne $options) { $options += $global:options} else {$options = $global:options}'