如何在 PowerShell 提示符中显示当前的 git 分支名称？

Question

基本上我在追求 这 但对于 PowerShell 而不是 bash。

我通过 PowerShell 在 Windows 上使用 git。如果可能，我希望将当前的分支名称显示为命令提示符的一部分。

Answer 1

一种更简单的方法是安装 Powershell 模块 豪华git. 。它开箱即用，并带有所需的提示：

提示

PowerShell 通过执行提示函数（如果存在）来生成提示符。posh-git 在 profile.example.ps1 中定义了这样一个函数，它输出当前工作目录，后跟缩写的 git status：

C:\Users\Keith [master]>

默认情况下，状态摘要具有以下格式：

[{HEAD-name} +A ~B -C !D | +E ~F -G !H]

（为了安装 posh-git 我建议使用 PSGET)

如果您没有 psget，请使用以下命令：

(new-object Net.WebClient).DownloadString("http://psget.net/GetPsGet.ps1") | iex

要安装 posh-git 使用命令：Install-Module posh-git

为了确保 posh-git 加载每个 shell，请使用 Add-PoshGitToPrompt 命令.

Answer 2

@保罗

我PowerShell配置需导是基于一个脚本我在这里找到：

http://techblogging.wordpress.com/2008/10/12/displaying-git-branch-on-your-powershell-prompt/

我已经修改这一点，以显示目录的道路和一些格式。它还设置的路径到我的混站的位置，因为我使用PortableGit.

# General variables
$pathToPortableGit = "D:\shared_tools\tools\PortableGit"
$scripts = "D:\shared_tools\scripts"

# Add Git executables to the mix.
[System.Environment]::SetEnvironmentVariable("PATH", $Env:Path + ";" + (Join-Path $pathToPortableGit "\bin") + ";" + $scripts, "Process")

# Setup Home so that Git doesn't freak out.
[System.Environment]::SetEnvironmentVariable("HOME", (Join-Path $Env:HomeDrive $Env:HomePath), "Process")

$Global:CurrentUser = [System.Security.Principal.WindowsIdentity]::GetCurrent()
$UserType = "User"
$CurrentUser.Groups | foreach { 
    if ($_.value -eq "S-1-5-32-544") {
        $UserType = "Admin" } 
    }

function prompt {
     # Fun stuff if using the standard PowerShell prompt; not useful for Console2.
     # This, and the variables above, could be commented out.
     if($UserType -eq "Admin") {
       $host.UI.RawUI.WindowTitle = "" + $(get-location) + " : Admin"
       $host.UI.RawUI.ForegroundColor = "white"
      }
     else {
       $host.ui.rawui.WindowTitle = $(get-location)
     }

    Write-Host("")
    $status_string = ""
    $symbolicref = git symbolic-ref HEAD
    if($symbolicref -ne $NULL) {
        $status_string += "GIT [" + $symbolicref.substring($symbolicref.LastIndexOf("/") +1) + "] "

        $differences = (git diff-index --name-status HEAD)
        $git_update_count = [regex]::matches($differences, "M`t").count
        $git_create_count = [regex]::matches($differences, "A`t").count
        $git_delete_count = [regex]::matches($differences, "D`t").count

        $status_string += "c:" + $git_create_count + " u:" + $git_update_count + " d:" + $git_delete_count + " | "
    }
    else {
        $status_string = "PS "
    }

    if ($status_string.StartsWith("GIT")) {
        Write-Host ($status_string + $(get-location) + ">") -nonewline -foregroundcolor yellow
    }
    else {
        Write-Host ($status_string + $(get-location) + ">") -nonewline -foregroundcolor green
    }
    return " "
 }

迄今为止，这个工作真的很好。虽然在一个仓库，提示高兴地看起来是：

GIT[高级]c:0u:1d:0|J:\Projects\forks\fluent-nhibernate>

*注意：更新的建议Jakub Narębski.

• 除去跟踪过去状态的呼吁。
• 解决问题'混帐config--全球会失败，因为$家不是集中。
• 解决的一个问题，浏览的目录，也没有.git目录将导致格式，以恢复到PS提示。

Answer 3

下面是我采取它。我已经编辑的颜色有点以使其更具有可读性。

<强> Microsoft.PowerShell_profile.ps1

function Write-BranchName () {
    try {
        $branch = git rev-parse --abbrev-ref HEAD

        if ($branch -eq "HEAD") {
            # we're probably in detached HEAD state, so print the SHA
            $branch = git rev-parse --short HEAD
            Write-Host " ($branch)" -ForegroundColor "red"
        }
        else {
            # we're on an actual branch, so print it
            Write-Host " ($branch)" -ForegroundColor "blue"
        }
    } catch {
        # we'll end up here if we're in a newly initiated git repo
        Write-Host " (no branches yet)" -ForegroundColor "yellow"
    }
}

function prompt {
    $base = "PS "
    $path = "$($executionContext.SessionState.Path.CurrentLocation)"
    $userPrompt = "$('>' * ($nestedPromptLevel + 1)) "

    Write-Host "`n$base" -NoNewline

    if (Test-Path .git) {
        Write-Host $path -NoNewline -ForegroundColor "green"
        Write-BranchName
    }
    else {
        # we're not in a repo so don't bother displaying branch name/sha
        Write-Host $path -ForegroundColor "green"
    }

    return $userPrompt
}

示例1：

示例2：

Answer 4

我调整的提示码(从@david-longnecker的答复)是一个有点更加丰富多彩。

编辑： 六月2019年-展示更新未跟踪,储藏，重新命名.调整的视觉显示指标。

为什么 我 使用这个 (通过的辣妹-git等):

• 学习：学习的东西git/SCM概念当作为我调整
  • 结束了固定的问题，解决通过的辣妹-git，但我了解更多的是通过这个
• 交叉平台：具有同样的提示在POSIX炮弹，代码是几乎完全相同。
• 灵活性：我已经调整了我的提示表明未跟踪/储藏/index/重新命名.
• 轻巧便携式：没有获取外部模块(这是未成年人的利益，但不错的)

Powershell码：

注： 一些命令使用的都是瓷器(不建议脚本/析，例如 git status).最终将迁移到 管道 命令，但是这一工作。

Function Prompt {

$SYMBOL_GIT_BRANCH='⑂'
$SYMBOL_GIT_MODIFIED='*'
$SYMBOL_GIT_PUSH='↑'
$SYMBOL_GIT_PULL='↓'

if (git rev-parse --git-dir 2> $null) {

  $symbolicref = $(git symbolic-ref --short HEAD 2>$NULL)

  if ($symbolicref) {#For branches append symbol
    $branch = $symbolicref.substring($symbolicref.LastIndexOf("/") +1)
    $branchText=$SYMBOL_GIT_BRANCH + ' ' + $branch
  } else {#otherwise use tag/SHA
      $symbolicref=$(git describe --tags --always 2>$NULL)
      $branch=$symbolicref
      $branchText=$symbolicref
  }

} else {$symbolicref = $NULL}


if ($symbolicref -ne $NULL) {
  # Tweak:
  # When WSL and Powershell terminals concurrently viewing same repo
  # Stops from showing CRLF/LF differences as updates
  git status > $NULL

  #Do git fetch if no changes in last 10 minutes
  # Last Reflog: Last time upstream was updated
  # Last Fetch: Last time fetch/pull was ATTEMPTED
  # Between the two can identify when last updated or attempted a fetch.
  $MaxFetchSeconds = 600
  $upstream = $(git rev-parse --abbrev-ref "@{upstream}")
  $lastreflog = $(git reflog show --date=iso $upstream -n1)
  if ($lastreflog -eq $NULL) {
    $lastreflog = (Get-Date).AddSeconds(-$MaxFetchSeconds)
  }
  else {
    $lastreflog = [datetime]$($lastreflog | %{ [Regex]::Matches($_, "{(.*)}") }).groups[1].Value
  }
  $gitdir = $(git rev-parse --git-dir)
  $TimeSinceReflog = (New-TimeSpan -Start $lastreflog).TotalSeconds
  if (Test-Path $gitdir/FETCH_HEAD) {
    $lastfetch =  (Get-Item $gitdir/FETCH_HEAD).LastWriteTime
    $TimeSinceFetch = (New-TimeSpan -Start $lastfetch).TotalSeconds
  } else {
    $TimeSinceFetch = $MaxFetchSeconds + 1
  }
  #Write-Host "Time since last reflog: $TimeSinceReflog"
  #Write-Host "Time since last fetch: $TimeSinceFetch"
  if (($TimeSinceReflog -gt $MaxFetchSeconds) -AND ($TimeSinceFetch -gt $MaxFetchSeconds)) {
    git fetch --all | Out-Null
  }

  #Identify stashes
  $stashes = $(git stash list 2>$NULL)
  if ($stashes -ne $NULL) {
    $git_stashes_count=($stashes | Measure-Object -Line).Lines
  }
  else {$git_stashes_count=0}

  #Identify how many commits ahead and behind we are
  #by reading first two lines of `git status`
  #Identify how many untracked files (matching `?? `)
  $marks=$NULL
  (git status --porcelain --branch 2>$NULL) | ForEach-Object {

      If ($_ -match '^##') {
        If ($_ -match 'ahead\ ([0-9]+)') {$git_ahead_count=[int]$Matches[1]}
        If ($_ -match 'behind\ ([0-9]+)') {$git_behind_count=[int]$Matches[1]}
      }
      #Identify Added/UnTracked files
      elseIf ($_ -match '^A\s\s') {
        $git_index_added_count++
      }
      elseIf ($_ -match '^\?\?\ ') {
        $git_untracked_count++
      }

      #Identify Modified files
      elseIf ($_ -match '^MM\s') {
        $git_index_modified_count++
        $git_modified_count++
      }
      elseIf ($_ -match '^M\s\s') {
        $git_index_modified_count++
      }
      elseIf ($_ -match '^\sM\s') {
        $git_modified_count++
      }

      #Identify Renamed files
      elseIf ($_ -match '^R\s\s') {
        $git_index_renamed_count++
      }

      #Identify Deleted files
      elseIf ($_ -match '^D\s\s') {
        $git_index_deleted_count++
      }
      elseIf ($_ -match '^\sD\s') {
        $git_deleted_count++
      }

  }
  $branchText+="$marks"

}

if (test-path variable:/PSDebugContext) {
  Write-Host '[DBG]: ' -nonewline -foregroundcolor Yellow
}

Write-Host "PS " -nonewline -foregroundcolor White
Write-Host $($executionContext.SessionState.Path.CurrentLocation) -nonewline -foregroundcolor White

if ($symbolicref -ne $NULL) {
  Write-Host (" [ ") -nonewline -foregroundcolor Magenta

  #Output the branch in prettier colors
  If ($branch -eq "master") {
    Write-Host ($branchText) -nonewline -foregroundcolor White
  }
  else {Write-Host $branchText -nonewline -foregroundcolor Red}

  #Output commits ahead/behind, in pretty colors
  If ($git_ahead_count -gt 0) {
    Write-Host (" $SYMBOL_GIT_PUSH") -nonewline -foregroundcolor White
    Write-Host ($git_ahead_count) -nonewline -foregroundcolor Green
  }
  If ($git_behind_count -gt 0) {
    Write-Host (" $SYMBOL_GIT_PULL") -nonewline -foregroundcolor White
    Write-Host ($git_behind_count) -nonewline -foregroundcolor Yellow
  }

  #Output staged changes count, if any, in pretty colors
  If ($git_index_added_count -gt 0) {
    Write-Host (" Ai:") -nonewline -foregroundcolor White
    Write-Host ($git_index_added_count) -nonewline -foregroundcolor Green
  }

  If ($git_index_renamed_count -gt 0) {
    Write-Host (" Ri:") -nonewline -foregroundcolor White
    Write-Host ($git_index_renamed_count) -nonewline -foregroundcolor DarkGreen
  }

  If ($git_index_modified_count -gt 0) {
    Write-Host (" Mi:") -nonewline -foregroundcolor White
    Write-Host ($git_index_modified_count) -nonewline -foregroundcolor Yellow
  }

  If ($git_index_deleted_count -gt 0) {
    Write-Host (" Di:") -nonewline -foregroundcolor White
    Write-Host ($git_index_deleted_count) -nonewline -foregroundcolor Red
  }

  #Output unstaged changes count, if any, in pretty colors
  If (($git_index_added_count) -OR ($git_index_modified_count) -OR ($git_index_deleted_count)) {
    If (($git_modified_count -gt 0) -OR ($git_deleted_count -gt 0))  {
      Write-Host (" |") -nonewline -foregroundcolor White
    }
  }

  If ($git_modified_count -gt 0) {
    Write-Host (" M:") -nonewline -foregroundcolor White
    Write-Host ($git_modified_count) -nonewline -foregroundcolor Yellow
  }

  If ($git_deleted_count -gt 0) {
    Write-Host (" D:") -nonewline -foregroundcolor White
    Write-Host ($git_deleted_count) -nonewline -foregroundcolor Red
  }

  If (($git_untracked_count -gt 0) -OR ($git_stashes_count -gt 0))  {
    Write-Host (" |") -nonewline -foregroundcolor White
  }

  If ($git_untracked_count -gt 0)  {
    Write-Host (" untracked:") -nonewline -foregroundcolor White
    Write-Host ($git_untracked_count) -nonewline -foregroundcolor Red
  }

  If ($git_stashes_count -gt 0)  {
    Write-Host (" stashes:") -nonewline -foregroundcolor White
    Write-Host ($git_stashes_count) -nonewline -foregroundcolor Yellow
  }

  Write-Host (" ]") -nonewline -foregroundcolor Magenta

}

$(Write-Host $('>' * ($nestedPromptLevel + 1)) -nonewline -foregroundcolor White)



return " "}#Powershell requires a return, otherwise defaults to factory prompt

结果(VSCode，使用Powershell终端):

这里是命令从结果来看是什么它看起来像:

mkdir "c:\git\newrepo" | Out-Null
cd "c:\git\newrepo"
git init
"test" >> ".gitignore"
"test" >> ".gitignore2"
git add -A
git commit -m "test commit" | Out-Null
"test" >> ".gitignore1"
git add -A
"test1" >> ".gitignore2"
git rm .gitignore
git add -A
git commit -m "test commit2" | Out-Null
git checkout -b "newfeature1"
"test" >> ".test"
mv .gitignore1 .gitignore3
git add -A
git stash
git checkout "master"
cd c:\git\test #Just a sample repo had that was ahead 1 commit
#Remove-Item "c:\git\newrepo" -Recurse -Force #Cleanup