GitTabExpansion.ps1
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# Initial implementation by Jeremy Skinner # http://www.jeremyskinner.co.uk/2010/03/07/using-git-with-windows-powershell/ $Global:GitTabSettings = New-Object PSObject -Property @{ AllCommands = $false KnownAliases = @{ '!f() { exec vsts code pr "$@"; }; f' = 'vsts.pr' } EnableLogging = $false LogPath = Join-Path ([System.IO.Path]::GetTempPath()) posh-git_tabexp.log } $subcommands = @{ bisect = "start bad good skip reset visualize replay log run" notes = 'add append copy edit get-ref list merge prune remove show' 'vsts.pr' = 'create update show list complete abandon reactivate reviewers work-items set-vote policies' reflog = "show delete expire" remote = " add rename remove set-head set-branches get-url set-url show prune update " rerere = "clear forget diff remaining status gc" stash = 'push save list show apply clear drop pop create branch' submodule = "add status init deinit update summary foreach sync" svn = " init fetch clone rebase dcommit log find-rev set-tree commit-diff info create-ignore propget proplist show-ignore show-externals branch tag blame migrate mkdirs reset gc " tfs = " list-remote-branches clone quick-clone bootstrap init clone fetch pull quick-clone unshelve shelve-list labels rcheckin checkin checkintool shelve shelve-delete branch info cleanup cleanup-workspaces help verify autotag subtree reset-remote checkout " flow = "init feature bugfix release hotfix support help version" worktree = "add list lock move prune remove unlock" } $gitflowsubcommands = @{ init = 'help' feature = 'list start finish publish track diff rebase checkout pull help delete' bugfix = 'list start finish publish track diff rebase checkout pull help delete' release = 'list start finish track publish help delete' hotfix = 'list start finish track publish help delete' support = 'list start help' config = 'list set base' } function script:gitCmdOperations($commands, $command, $filter) { $commands[$command].Trim() -split '\s+' | Where-Object { $_ -like "$filter*" } } $script:someCommands = @('add','am','annotate','archive','bisect','blame','branch','bundle','checkout','cherry', 'cherry-pick','citool','clean','clone','commit','config','describe','diff','difftool','fetch', 'format-patch','gc','grep','gui','help','init','instaweb','log','merge','mergetool','mv', 'notes','prune','pull','push','rebase','reflog','remote','rerere','reset','restore','revert','rm', 'shortlog','show','stash','status','submodule','svn','switch','tag','whatchanged', 'worktree') if ((($PSVersionTable.PSVersion.Major -eq 5) -or $IsWindows) -and ($script:GitVersion -ge [System.Version]'2.16.2')) { $script:someCommands += 'update-git-for-windows' } $script:gitCommandsWithLongParams = $longGitParams.Keys -join '|' $script:gitCommandsWithShortParams = $shortGitParams.Keys -join '|' $script:gitCommandsWithParamValues = $gitParamValues.Keys -join '|' $script:vstsCommandsWithShortParams = $shortVstsParams.Keys -join '|' $script:vstsCommandsWithLongParams = $longVstsParams.Keys -join '|' # The regular expression here is roughly follows this pattern: # # <begin anchor><whitespace>*<git>(<whitespace><parameter>)*<whitespace>+<$args><whitespace>*<end anchor> # # The delimiters inside the parameter list and between some of the elements are non-newline whitespace characters ([^\S\r\n]). # In those instances, newlines are only allowed if they preceded by a non-newline whitespace character. # # Begin anchor (^|[;`n]) # Whitespace (\s*) # Git Command (?<cmd>$(GetAliasPattern git)) # Parameters (?<params>(([^\S\r\n]|[^\S\r\n]``\r?\n)+\S+)*) # $args Anchor (([^\S\r\n]|[^\S\r\n]``\r?\n)+\`$args) # Whitespace (\s|``\r?\n)* # End Anchor ($|[|;`n]) $script:GitProxyFunctionRegex = "(^|[;`n])(\s*)(?<cmd>$(Get-AliasPattern git))(?<params>(([^\S\r\n]|[^\S\r\n]``\r?\n)+\S+)*)(([^\S\r\n]|[^\S\r\n]``\r?\n)+\`$args)(\s|``\r?\n)*($|[|;`n])" try { if ($null -ne (git help -a 2>&1 | Select-String flow)) { $script:someCommands += 'flow' } } catch { Write-Debug "Search for 'flow' in 'git help' output failed with error: $_" } filter quoteStringWithSpecialChars { if ($_ -and ($_ -match '\s+|#|@|\$|;|,|''|\{|\}|\(|\)')) { $str = $_ -replace "'", "''" "'$str'" } else { $_ } } function script:gitCommands($filter, $includeAliases) { $cmdList = @() if (-not $global:GitTabSettings.AllCommands) { $cmdList += $someCommands -like "$filter*" } else { $cmdList += git help --all | Where-Object { $_ -match '^\s{2,}\S.*' } | ForEach-Object { $_.Split(' ', [StringSplitOptions]::RemoveEmptyEntries) } | Where-Object { $_ -like "$filter*" } } if ($includeAliases) { $cmdList += gitAliases $filter } $cmdList | Sort-Object } function script:gitRemotes($filter) { git remote | Where-Object { $_ -like "$filter*" } | quoteStringWithSpecialChars } function script:gitBranches($filter, $includeHEAD = $false, $prefix = '') { if ($filter -match "^(?<from>\S*\.{2,3})(?<to>.*)") { $prefix += $matches['from'] $filter = $matches['to'] } $branches = @(git branch --no-color | ForEach-Object { if (($_ -notmatch "^\* \(HEAD detached .+\)$") -and ($_ -match "^[\*\+]?\s*(?<ref>.*)")) { $matches['ref'] } }) + @(git branch --no-color -r | ForEach-Object { if ($_ -match "^ (?<ref>\S+)(?: -> .+)?") { $matches['ref'] } }) + @(if ($includeHEAD) { 'HEAD','FETCH_HEAD','ORIG_HEAD','MERGE_HEAD' }) $branches | Where-Object { $_ -ne '(no branch)' -and $_ -like "$filter*" } | ForEach-Object { $prefix + $_ } | quoteStringWithSpecialChars } function script:gitRemoteUniqueBranches($filter) { git branch --no-color -r | ForEach-Object { if ($_ -match "^ (?<remote>[^/]+)/(?<branch>\S+)(?! -> .+)?$") { $matches['branch'] } } | Group-Object -NoElement | Where-Object { $_.Count -eq 1 } | Select-Object -ExpandProperty Name | Where-Object { $_ -like "$filter*" } | quoteStringWithSpecialChars } function script:gitConfigKeys($section, $filter, $defaultOptions = '') { $completions = @($defaultOptions -split ' ') git config --name-only --get-regexp ^$section\..* | ForEach-Object { $completions += ($_ -replace "$section\.","") } return $completions | Where-Object { $_ -like "$filter*" } | Sort-Object | quoteStringWithSpecialChars } function script:gitTags($filter, $prefix = '') { git tag | Where-Object { $_ -like "$filter*" } | ForEach-Object { $prefix + $_ } | quoteStringWithSpecialChars } function script:gitFeatures($filter, $command) { $featurePrefix = git config --local --get "gitflow.prefix.$command" $branches = @(git branch --no-color | ForEach-Object { if ($_ -match "^\*?\s*$featurePrefix(?<ref>.*)") { $matches['ref'] } }) $branches | Where-Object { $_ -ne '(no branch)' -and $_ -like "$filter*" } | ForEach-Object { $featurePrefix + $_ } | quoteStringWithSpecialChars } function script:gitRemoteBranches($remote, $ref, $filter, $prefix = '') { git branch --no-color -r | Where-Object { $_ -like " $remote/$filter*" } | ForEach-Object { $prefix + $ref + ($_ -replace " $remote/","") } | quoteStringWithSpecialChars } function script:gitStashes($filter) { (git stash list) -replace ':.*','' | Where-Object { $_ -like "$filter*" } | quoteStringWithSpecialChars } function script:gitTfsShelvesets($filter) { (git tfs shelve-list) | Where-Object { $_ -like "$filter*" } | quoteStringWithSpecialChars } function script:gitFiles($filter, $files) { $files | Sort-Object | Where-Object { $_ -like "$filter*" } | quoteStringWithSpecialChars } function script:gitIndex($GitStatus, $filter) { gitFiles $filter $GitStatus.Index } function script:gitAddFiles($GitStatus, $filter) { gitFiles $filter (@($GitStatus.Working.Unmerged) + @($GitStatus.Working.Modified) + @($GitStatus.Working.Added)) } function script:gitCheckoutFiles($GitStatus, $filter) { gitFiles $filter (@($GitStatus.Working.Unmerged) + @($GitStatus.Working.Modified) + @($GitStatus.Working.Deleted)) } function script:gitDeleted($GitStatus, $filter) { gitFiles $filter $GitStatus.Working.Deleted } function script:gitDiffFiles($GitStatus, $filter, $staged) { if ($staged) { gitFiles $filter $GitStatus.Index.Modified } else { gitFiles $filter (@($GitStatus.Working.Unmerged) + @($GitStatus.Working.Modified) + @($GitStatus.Index.Modified)) } } function script:gitMergeFiles($GitStatus, $filter) { gitFiles $filter $GitStatus.Working.Unmerged } function script:gitRestoreFiles($GitStatus, $filter, $staged) { if ($staged) { gitFiles $filter (@($GitStatus.Index.Added) + @($GitStatus.Index.Modified) + @($GitStatus.Index.Deleted)) } else { gitFiles $filter (@($GitStatus.Working.Unmerged) + @($GitStatus.Working.Modified) + @($GitStatus.Working.Deleted)) } } function script:gitAliases($filter) { git config --get-regexp ^alias\. | ForEach-Object{ if ($_ -match "^alias\.(?<alias>\S+) .*") { $alias = $Matches['alias'] if ($alias -like "$filter*") { $alias } } } | Sort-Object -Unique } function script:expandGitAlias($cmd, $rest) { $alias = git config "alias.$cmd" if ($alias) { $known = $Global:GitTabSettings.KnownAliases[$alias] if ($known) { return "git $known$rest" } return "git $alias$rest" } else { return "git $cmd$rest" } } function script:expandLongParams($hash, $cmd, $filter) { $hash[$cmd].Trim() -split ' ' | Where-Object { $_ -like "$filter*" } | Sort-Object | ForEach-Object { -join ("--", $_) } } function script:expandShortParams($hash, $cmd, $filter) { $hash[$cmd].Trim() -split ' ' | Where-Object { $_ -like "$filter*" } | Sort-Object | ForEach-Object { -join ("-", $_) } } function script:expandParamValues($cmd, $param, $filter) { $paramValues = $gitParamValues[$cmd][$param] $completions = if ($paramValues -is [scriptblock]) { & $paramValues $filter } else { $paramValues.Trim() -split ' ' | Where-Object { $_ -like "$filter*" } | Sort-Object } $completions | ForEach-Object { -join ("--", $param, "=", $_) } } function Expand-GitCommand($Command) { $res = Invoke-Utf8ConsoleCommand { GitTabExpansionInternal $Command $Global:GitStatus } $res } function GitTabExpansionInternal($lastBlock, $GitStatus = $null) { $ignoreGitParams = '(?<params>\s+-(?:[aA-zZ0-9]+|-[aA-zZ0-9][aA-zZ0-9-]*)(?:=\S+)?)*' if ($lastBlock -match "^$(Get-AliasPattern git) (?<cmd>\S+)(?<args> .*)$") { $lastBlock = expandGitAlias $Matches['cmd'] $Matches['args'] } # Handles tgit <command> (tortoisegit) if ($lastBlock -match "^$(Get-AliasPattern tgit) (?<cmd>\S*)$") { # Need return statement to prevent fall-through. return $Global:TortoiseGitSettings.TortoiseGitCommands.Keys.GetEnumerator() | Sort-Object | Where-Object { $_ -like "$($matches['cmd'])*" } } # Handles gitk if ($lastBlock -match "^$(Get-AliasPattern gitk).* (?<ref>\S*)$") { return gitBranches $matches['ref'] $true } switch -regex ($lastBlock -replace "^$(Get-AliasPattern git) ","") { # Handles git <cmd> <op> "^(?<cmd>$($subcommands.Keys -join '|'))\s+(?<op>\S*)$" { gitCmdOperations $subcommands $matches['cmd'] $matches['op'] } # Handles git flow <cmd> <op> "^flow (?<cmd>$($gitflowsubcommands.Keys -join '|'))\s+(?<op>\S*)$" { gitCmdOperations $gitflowsubcommands $matches['cmd'] $matches['op'] } # Handles git flow <command> <op> <name> "^flow (?<command>\S*)\s+(?<op>\S*)\s+(?<name>\S*)$" { gitFeatures $matches['name'] $matches['command'] } # Handles git remote (rename|rm|set-head|set-branches|set-url|show|prune) <stash> "^remote.* (?:rename|rm|set-head|set-branches|set-url|show|prune).* (?<remote>\S*)$" { gitRemotes $matches['remote'] } # Handles git stash (show|apply|drop|pop|branch) <stash> "^stash (?:show|apply|drop|pop|branch).* (?<stash>\S*)$" { gitStashes $matches['stash'] } # Handles git bisect (bad|good|reset|skip) <ref> "^bisect (?:bad|good|reset|skip).* (?<ref>\S*)$" { gitBranches $matches['ref'] $true } # Handles git tfs unshelve <shelveset> "^tfs +unshelve.* (?<shelveset>\S*)$" { gitTfsShelvesets $matches['shelveset'] } # Handles git branch -d|-D|-m|-M <branch name> # Handles git branch <branch name> <start-point> "^branch.* (?<branch>\S*)$" { gitBranches $matches['branch'] } # Handles git <cmd> (commands & aliases) "^(?<cmd>\S*)$" { gitCommands $matches['cmd'] $TRUE } # Handles git help <cmd> (commands only) "^help (?<cmd>\S*)$" { gitCommands $matches['cmd'] $FALSE } # Handles git push remote <ref>:<branch> # Handles git push remote +<ref>:<branch> "^push${ignoreGitParams}\s+(?<remote>[^\s-]\S*).*\s+(?<force>\+?)(?<ref>[^\s\:]*\:)(?<branch>\S*)$" { gitRemoteBranches $matches['remote'] $matches['ref'] $matches['branch'] -prefix $matches['force'] } # Handles git push remote <ref> # Handles git push remote +<ref> # Handles git pull remote <ref> "^(?:push|pull)${ignoreGitParams}\s+(?<remote>[^\s-]\S*).*\s+(?<force>\+?)(?<ref>[^\s\:]*)$" { gitBranches $matches['ref'] -prefix $matches['force'] gitTags $matches['ref'] -prefix $matches['force'] } # Handles git pull <remote> # Handles git push <remote> # Handles git fetch <remote> "^(?:push|pull|fetch)${ignoreGitParams}\s+(?<remote>\S*)$" { gitRemotes $matches['remote'] } # Handles git reset HEAD <path> # Handles git reset HEAD -- <path> "^reset.* HEAD(?:\s+--)? (?<path>\S*)$" { gitIndex $GitStatus $matches['path'] } # Handles git <cmd> <ref> "^commit.*-C\s+(?<ref>\S*)$" { gitBranches $matches['ref'] $true } # Handles git add <path> "^add.* (?<files>\S*)$" { gitAddFiles $GitStatus $matches['files'] } # Handles git checkout -- <path> "^checkout.* -- (?<files>\S*)$" { gitCheckoutFiles $GitStatus $matches['files'] } # Handles git restore -s <ref> / --source=<ref> - must come before the next regex case "^restore.* (?-i)(-s\s*|(?<source>--source=))(?<ref>\S*)$" { gitBranches $matches['ref'] $true $matches['source'] gitTags $matches['ref'] break } # Handles git restore <path> "^restore(?:.* (?<staged>(?:(?-i)-S|--staged))|.*) (?<files>\S*)$" { gitRestoreFiles $GitStatus $matches['files'] $matches['staged'] } # Handles git rm <path> "^rm.* (?<index>\S*)$" { gitDeleted $GitStatus $matches['index'] } # Handles git diff/difftool <path> "^(?:diff|difftool)(?:.* (?<staged>(?:--cached|--staged))|.*) (?<files>\S*)$" { gitDiffFiles $GitStatus $matches['files'] $matches['staged'] } # Handles git merge/mergetool <path> "^(?:merge|mergetool).* (?<files>\S*)$" { gitMergeFiles $GitStatus $matches['files'] } # Handles git checkout|switch <ref> "^(?:checkout|switch).* (?<ref>\S*)$" { & { gitBranches $matches['ref'] $true gitRemoteUniqueBranches $matches['ref'] gitTags $matches['ref'] # Return only unique branches (to eliminate duplicates where the branch exists locally and on the remote) } | Select-Object -Unique } # Handles git worktree add <path> <ref> "^worktree add.* (?<files>\S+) (?<ref>\S*)$" { gitBranches $matches['ref'] } # Handles git <cmd> <ref> "^(?:cherry|cherry-pick|diff|difftool|log|merge|rebase|reflog\s+show|reset|revert|show).* (?<ref>\S*)$" { gitBranches $matches['ref'] $true gitTags $matches['ref'] } # Handles git <cmd> --<param>=<value> "^(?<cmd>$gitCommandsWithParamValues).* --(?<param>[^=]+)=(?<value>\S*)$" { expandParamValues $matches['cmd'] $matches['param'] $matches['value'] } # Handles git <cmd> --<param> "^(?<cmd>$gitCommandsWithLongParams).* --(?<param>\S*)$" { expandLongParams $longGitParams $matches['cmd'] $matches['param'] } # Handles git <cmd> -<shortparam> "^(?<cmd>$gitCommandsWithShortParams).* -(?<shortparam>\S*)$" { expandShortParams $shortGitParams $matches['cmd'] $matches['shortparam'] } # Handles git pr alias "vsts\.pr\s+(?<op>\S*)$" { gitCmdOperations $subcommands 'vsts.pr' $matches['op'] } # Handles git pr <cmd> --<param> "vsts\.pr\s+(?<cmd>$vstsCommandsWithLongParams).*--(?<param>\S*)$" { expandLongParams $longVstsParams $matches['cmd'] $matches['param'] } # Handles git pr <cmd> -<shortparam> "vsts\.pr\s+(?<cmd>$vstsCommandsWithShortParams).*-(?<shortparam>\S*)$" { expandShortParams $shortVstsParams $matches['cmd'] $matches['shortparam'] } } } function Expand-GitProxyFunction($command) { # Make sure the incoming command matches: <Command> <Args>, so we can extract the alias/command # name and the arguments being passed in. if ($command -notmatch '^(?<command>\S+)([^\S\r\n]|[^\S\r\n]`\r?\n)+(?<args>([^\S\r\n]|[^\S\r\n]`\r?\n|\S)*)$') { return $command } # Store arguments for replacement later $arguments = $matches['args'] # Get the command name; if an alias exists, get the actual command name $commandName = $matches['command'] if (Test-Path -Path Alias:\$commandName) { $commandName = Get-Item -Path Alias:\$commandName | Select-Object -ExpandProperty 'ResolvedCommandName' } # Extract definition of git usage if (Test-Path -Path Function:\$commandName) { $definition = Get-Item -Path Function:\$commandName | Select-Object -ExpandProperty 'Definition' if ($definition -match $script:GitProxyFunctionRegex) { # Clean up the command by removing extra delimiting whitespace and backtick preceding newlines return (("$($matches['cmd'].TrimStart()) $($matches['params']) $arguments") -replace '`\r?\n', ' ' -replace '\s+', ' ') } } return $command } function WriteTabExpLog([string] $Message) { if (!$global:GitTabSettings.EnableLogging) { return } $timestamp = Get-Date -Format HH:mm:ss "[$timestamp] $Message" | Out-File -Append $global:GitTabSettings.LogPath } if (!$UseLegacyTabExpansion -and ($PSVersionTable.PSVersion.Major -ge 6)) { $cmdNames = "git","tgit","gitk" if ($EnableProxyFunctionExpansion) { $cmdNames += Get-ChildItem -Path Function:\ | Where-Object { $_.Definition -match $script:GitProxyFunctionRegex } | Select-Object -ExpandProperty 'Name' } $cmdNames += Get-Alias -Definition $cmdNames -ErrorAction Ignore | ForEach-Object Name Microsoft.PowerShell.Core\Register-ArgumentCompleter -CommandName $cmdNames -Native -ScriptBlock { param($wordToComplete, $commandAst, $cursorPosition) # The PowerShell completion has a habit of stripping the trailing space when completing: # git checkout <tab> # The Expand-GitCommand expects this trailing space, so pad with a space if necessary. $padLength = $cursorPosition - $commandAst.Extent.StartOffset $textToComplete = $commandAst.ToString().PadRight($padLength, ' ').Substring(0, $padLength) if ($EnableProxyFunctionExpansion) { $textToComplete = Expand-GitProxyFunction($textToComplete) } WriteTabExpLog "Expand: command: '$($commandAst.Extent.Text)', padded: '$textToComplete', padlen: $padLength" Expand-GitCommand $textToComplete } } else { $PowerTab_RegisterTabExpansion = if (Get-Module -Name powertab) { Get-Command Register-TabExpansion -Module powertab -ErrorAction SilentlyContinue } if ($PowerTab_RegisterTabExpansion) { & $PowerTab_RegisterTabExpansion git -Type Command { param($Context, [ref]$TabExpansionHasOutput, [ref]$QuoteSpaces) $line = $Context.Line $lastBlock = [regex]::Split($line, '[|;]')[-1].TrimStart() if ($EnableProxyFunctionExpansion) { $lastBlock = Expand-GitProxyFunction($lastBlock) } $TabExpansionHasOutput.Value = $true WriteTabExpLog "PowerTab expand: '$lastBlock'" Expand-GitCommand $lastBlock } return } function TabExpansion($line, $lastWord) { $lastBlock = [regex]::Split($line, '[|;]')[-1].TrimStart() if ($EnableProxyFunctionExpansion) { $lastBlock = Expand-GitProxyFunction($lastBlock) } $msg = "Legacy expand: '$lastBlock'" switch -regex ($lastBlock) { # Execute git tab completion for all git-related commands "^$(Get-AliasPattern git) (.*)" { WriteTabExpLog $msg; Expand-GitCommand $lastBlock } "^$(Get-AliasPattern tgit) (.*)" { WriteTabExpLog $msg; Expand-GitCommand $lastBlock } "^$(Get-AliasPattern gitk) (.*)" { WriteTabExpLog $msg; Expand-GitCommand $lastBlock } } } } # Handles Remove-GitBranch -Name parameter auto-completion using the built-in mechanism for cmdlet parameters Microsoft.PowerShell.Core\Register-ArgumentCompleter -CommandName Remove-GitBranch -ParameterName Name -ScriptBlock { param($Command, $Parameter, $WordToComplete, $CommandAst, $FakeBoundParams) gitBranches $WordToComplete $true } |