在 git hook 中获取提交消息
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get commit message in git hook
提问by fish potato
I would like to check commit message before git commit. I use pre-commit hook to do that, but couldn't find the way to get commit message in .git/pre-commit script. How could I get it?
我想在 git commit 之前检查提交消息。我使用预提交钩子来做到这一点，但找不到在 .git/pre-commit 脚本中获取提交消息的方法。我怎么能得到它？
回答by Mark Longair
In the pre-commithook, the commit message usually hasn't been created yet 1. You probably want to use one of the prepare-commit-msgor commit-msghooks instead. There's a nice section in Pro Giton the order in which these hooks are run, and what you typically might do with them.
在pre-commit钩子中，提交消息通常尚未创建1。您可能想改用prepare-commit-msgorcommit-msg钩子之一。Pro Git 中有一个很好的部分介绍了这些钩子的运行顺序，以及您通常可以用它们做什么。
1. The exception is that the committer might have supplied a commit message with -m, but the message still isn't accessible to the pre-commithook, whereas it is to prepare-commit-msgor commit-msg
1. 例外是提交者可能已经提供了一个提交消息-m，但是pre-commit钩子仍然无法访问该消息，而它是prepare-commit-msg或commit-msg
回答by Neo
I implemented this in the commit-msghook. See documentation.
我在commit-msg钩子中实现了这个。请参阅文档。
commit-msg
This hook is invoked by git commit, and can be bypassed with the --no-verify option.
It takes a single parameter, the name of the file that holds the proposed commit log message.
Exiting with a non-zero status causes the git commit to abort.
Under my_git_project/.git/hooks, I added this file commit.msg(has to be this name). I added the following bash contents inside this file which did the validation.
在 下my_git_project/.git/hooks，我添加了这个文件commit.msg（必须是这个名字）。我在这个文件中添加了以下 bash 内容来进行验证。
#!/usr/bin/env bash
INPUT_FILE=
START_LINE=`head -n1 $INPUT_FILE`
PATTERN="^(MYPROJ)-[[:digit:]]+: "
if ! [[ "$START_LINE" =~ $PATTERN ]]; then
echo "Bad commit message, see example: MYPROJ-123: commit message"
exit 1
fi
回答by JammingThebBits
The hook name should be:
钩子名称应该是：
commit-msg, otherwise it won't get invoked:
commit-msg，否则它不会被调用：
回答by ugurarpaci
You can do the following in a pre-receivehook (for server side) using Python, and that will display the revision information.
您可以pre-receive使用 Python在钩子（用于服务器端）中执行以下操作，这将显示修订信息。
import sys
import subprocess
old, new, branch = sys.stdin.read().split()
proc = subprocess.Popen(["git", "rev-list", "--oneline","--first-parent" , "%s..%s" %(old, new)], stdout=subprocess.PIPE)
commitMessage=str(proc.stdout.readlines()[0])
