如何测试Git仓库是否浅? [英] How to Test if Git Repository is Shallow?

问题描述

当我从存储库中进行本地克隆时，如果原始存储库较浅，则克隆将失败.

When I make a local clone from a repository, the clone fails if the origin repository is shallow.

git clone -l -- . target-dir

由于并非总是如此，我想找出以前的克隆，但不知道该怎么做.

As that is not always the case I'd like to find out prior clone but don't know how to do that.

到目前为止，我尝试的内容很少，基本上是在克隆上创建错误消息.目前，我只是提取到unshallow的文件，如果失败，那么我将进行普通的提取，因为如果存储库很浅，那么之后它就应该是浅表的:

What I tried so far is very little, basically creating error messages on clone. At the moment I just fetch to unshallow and if that fails, I do a plain fetch because if the repo would be shallow, it should be unshallow afterwards:

if ! git fetch --unshallow; then
    git fetch
fi

但是，并不能保证以后将其变浅(从远程获取也可以变浅)，因此对git存储库的(非)浅度进行测试会更好.

However there is no guarantee for being unshallow afterwards (remote to fetch from can be shallow, too), so a test for the (un)shallowness of a git repository would be much better.

推荐答案

如果您的Git为2.15或更高版本，请运行:

If your Git is 2.15 or later, run:

git rev-parse --is-shallow-repository

将会打印false(不浅)或true(浅):

which will print false (not shallow) or true (shallow):

if $(git rev-parse --is-shallow-repository); then
    ... repository is shallow ...
fi

下面的答案可以追溯到2.15之前的Git版本.

The answer below dates back to Git versions before 2.15.

如果您的Git早于2.15，则 ¹ 只需在Git存储库目录中测试文件shallow:

If your Git is older than 2.15,¹ just test for the file shallow in the Git repository directory:

if [ -f $(git rev-parse --git-dir)/shallow ]; then
    echo this is a shallow repository;
else
    echo not a shallow repository;
fi

或(简称):

[ -f $(git rev-parse --git-dir)/shallow ] && echo true || echo false

您可以将其转换为shell函数:

You can turn this into a shell function:

test_shallow() {
    [ -f $(git rev-parse --git-dir)/shallow ] && echo true || echo false
}

甚至自动执行Git版本检查:

and even automate the Git version checking:

test_shallow() {
    set -- $(git rev-parse --is-shallow-repository)
    if [ x$1 == x--is-shallow-repository ]; then
        [ -f $(git rev-parse --git-dir)/shallow ] && set true || set false
    fi
    echo $1
}

---

¹ git --version将打印当前版本号:

---

¹git --version will print the current version number:

$ git --version
2.14.1

$ git --version
git version 2.7.4

等(目前，我在不同的VM/机器上有多个版本.)您还可以运行:

etc. (I have multiple versions on different VMs/machines at this point.) You can also run:

git rev-parse --is-shallow-repository

如果仅打印--is-shallow-repository，则您的Git为2.15之前的版本，并且缺少该选项.

If it just prints --is-shallow-repository, your Git is pre-2.15 and lacks the option.

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