寻找在Windows系统上安装Git的路径 [英] Finding the path where Git is installed on a Windows system

问题描述

我想编写一个小的构建辅助工具，它应该读取当前Git工作目录的一些属性，比如最后一个提交散列，是否有修改过的文件等等。我发现使用已安装的Git二进制文件比使用未知格式的压缩文件读取.git目录更容易。但我的工具必须尽可能便携。它适用于.NET应用程序，所以唯一的要求应该是.NET 2.0或更新。

现在我怎么找到安装Git的路径？如果用户刚刚点击Git安装程序，则会使用默认的一个。但可能会有所不同。当我在git / bin中看到所有的程序文件时，我真的不希望它存在于我的％PATH％（其他工具，如TortoiseGit似乎也不需要）。我在注册表中找不到任何路径线索。

我可以使用什么算法来查找Git，这不是一个完整的文件系统扫描？ （我已经说过它需要很快？）

解决方案

我使用下面的批处理文件来找出Git for Windows已安装：

  @echo off 
 
 setlocal enabledelayedexpansion 
 
 rem从注册表中读取Git for Windows安装路径。 （HKCU HKLM）中的%% k做
（（\ \Wow6432Node\）做的
做（
 / fskip = 2 delims =：令牌='*'%% a in（'reg query%% k\SOFTWARE %% wMicrosoft\Windows\CurrentVersion\Uninstall\Git_is1/ v InstallLocation 2 ^> nul'）do（$ b $ （%% a）do（
 set GIT = %% z：%% b 
 echo）发现Git at！GIT！。 
 goto FOUND 
）
）
）
）
 
 goto NOT_FOUND 
 
：FOUND 
 
 rem确保Bash在PATH中（用于运行脚本）。 
 set PATH =％GIT％bin;％PATH％
 
 rem用Git做一些事情... 
 
：NOT_FOUND 
  

我应该直接在.NET中做类似的事情。请记住，如果您使用的是64位Windows，则必须明确检查注册表的32位分支。

$ b 编辑： Git for Windows 2.6.1 now 另外写道 CurrentVersion ， InstallPath 和 LibexecPath 值添加到 HKEY_LOCAL_MACHINE \ Software \GitForWindows 键。

I'd like to write a small build helper tool that shall read some properties of the current Git working directory, like the last commit hash, whether there's modified files and so on. I found that it is easier to use the installed Git binaries instead of reading the .git directory with its compressed files in an unknown format. But my tools must be as portable as possible. It's intended for .NET applications, so the only requirement should be .NET 2.0 or newer.

Now how can I find the path where Git is installed? There's a default one that is used if the user has just clicked through the Git installer. But it may be different. And when I see all the programme files in git/bin, I really don't want that to be in my %PATH% (which other tools like TortoiseGit don't seem to require, too). I haven't found any path clues in the registry.

What algorithm could I use to find Git, that is not a full file system scan? (Did I already say it needs to be fast?)

解决方案

I'm using the following batch file to find out where Git for Windows has been installed:

@echo off

setlocal enabledelayedexpansion

rem Read the Git for Windows installation path from the Registry.
for %%k in (HKCU HKLM) do (
    for %%w in (\ \Wow6432Node\) do (
        for /f "skip=2 delims=: tokens=1*" %%a in ('reg query "%%k\SOFTWARE%%wMicrosoft\Windows\CurrentVersion\Uninstall\Git_is1" /v InstallLocation 2^> nul') do (
            for /f "tokens=3" %%z in ("%%a") do (
                set GIT=%%z:%%b
                echo Found Git at "!GIT!".
                goto FOUND
            )
        )
    )
)

goto NOT_FOUND

:FOUND

rem Make sure Bash is in PATH (for running scripts).
set PATH=%GIT%bin;%PATH%

rem Do something with Git ...

:NOT_FOUND

I should be straight forward to do something similar in .NET. Just remember that you have to explicitly check the 32-bit branch of the Registry if you're on a 64-bit Windows.

Edit: Git for Windows 2.6.1 now additionally writes the CurrentVersion, InstallPath and LibexecPath values to the HKEY_LOCAL_MACHINE\Software\GitForWindows key.

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