Mercurial 关键字扩展可在每次提交时扩展

发布于 2024-10-30 00:47:44 字数 484 浏览 5 评论 0原文

我需要使用 hg 关键字扩展将构建日期和修订版本嵌入到源文件中。撇开“你真的不想这样做”的争论不谈，我该怎么做呢？

这是我的源文件 (lib/foo/version.rb) 的样子（恰好是 Ruby，但这只是从我没有“编译”步骤的角度来看相关的）在我的构建中，我可以执行 -DREVISION="$(hg id)" in)：

module Foo
  VERSION = {
    :date => "$Date$",
    :changeset => "$Revision$"
  }
end

问题是 $Revision$ 和 $Date$ 使用该文件的变更集和提交日期进行扩展，而我需要的是整个存储库的提示变更集和提交日期。

我没有看到可以在 hg help templates 中使用的明显模板，关键字扩展也没有提及任何具有全局范围的内容。我想做的事情可能吗？

原文

I need to use the hg keyword extension to embed the build date and revision into a source file. Leaving aside the whole "you really don't want to be doing that" argument, how can I do this?

Here's what my source file (lib/foo/version.rb) looks like (which happens to be Ruby, but that's only relevant from the point of view that I don't have a "compile" step in my build which I could do a -DREVISION="$(hg id)" in):

module Foo
  VERSION = {
    :date => "$Date$",
    :changeset => "$Revision$"
  }
end

The problem is that $Revision$ and $Date$ are expanded with the changeset and commit date of that file, whereas what I need is the tip changeset and commit date of the whole repository.

I don't see an obvious template I can use in hg help templates, nor does the keyword extension mention anything with global scope. Is what I'm trying to do possible?

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云醉月微眠 2024-11-06 00:47:44

您可以安装更新文件的 post-commit 挂钩：

[hooks]
post-commit = sed -i lib/foo/version.rb \
  -e "s|\$Date.*\$|\$Date: $(date)\$|" \
  -e "s|\$Version.*\$|\$Version: $(hg id -i)\$|"

然后您应该将版本文件添加到 .hgignore 文件中 - 每次提交后它都会更改，因此总是很脏。您还可以添加一个编码过滤器来清理版本文件：

[encode]
lib/foo/version.rb =  sed -e "s|\$Date.*\$|\$Date\$|" \
                          -e "s|\$Version.*\$|\$Version\$|"

此脚本将使 Mercurial 将文件视为干净的 - 无论它实际包含什么日期和变更集，Mercurial 都会将其视为包含未扩展的 $Date$ 和 $Version$ 关键字：

$ hg commit -m test
$ hg tip
changeset:   7:df81c9ddc9ad
tag:         tip
user:        Martin Geisler 
date:        Wed Apr 06 14:39:26 2011 +0200
summary:     test

$ hg status
$ hg cat version.py
date = "$Date$"
version = "$Version$"
$ cat version.py
date = "$Date: Wed Apr  6 14:39:26 CEST 2011$"
version = "$Version: df81c9ddc9ad$"

You can install a post-commit hook that updates the file:

[hooks]
post-commit = sed -i lib/foo/version.rb \
  -e "s|\$Date.*\$|\$Date: $(date)\$|" \
  -e "s|\$Version.*\$|\$Version: $(hg id -i)\$|"

You should then probably add the version file to the .hgignore file -- it will change after every commit and thus always be dirty. You could also add a encode filter that will clean up the version file:

[encode]
lib/foo/version.rb =  sed -e "s|\$Date.*\$|\$Date\$|" \
                          -e "s|\$Version.*\$|\$Version\$|"

This script will make Mercurial see the file as clean -- no matter what date and changeset has it really contains, Mercurial will see it as containing un-expanded $Date$ and $Version$ keywords:

$ hg commit -m test
$ hg tip
changeset:   7:df81c9ddc9ad
tag:         tip
user:        Martin Geisler 
date:        Wed Apr 06 14:39:26 2011 +0200
summary:     test

$ hg status
$ hg cat version.py
date = "$Date$"
version = "$Version$"
$ cat version.py
date = "$Date: Wed Apr  6 14:39:26 CEST 2011$"
version = "$Version: df81c9ddc9ad$"

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篱下浅笙歌 2024-11-06 00:47:44

如果您从结帐运行代码，则可以直接调用 hg 并缓存该值。类似于：

module Foo
  VERSION = {
    :version => system("hg log --template '{note|short}-{latesttag}-{latesttagdistance}' -r .")
  }
end

如果您没有在安装了 Mercurial 的系统上从结帐内部运行代码，那么您的部署脚本可以轻松获取/使用该值 - 也许可以通过使用 hg archive 来获取要发送的 tarball，然后自动包含 .hg_archive.txt。

我向您保证，无论您的设置是什么，都有比关键字扩展更漂亮的方法。

If you're running your code from a checkout you can invoke hg directly and cache the value. Something like:

module Foo
  VERSION = {
    :version => system("hg log --template '{note|short}-{latesttag}-{latesttagdistance}' -r .")
  }
end

and if you're not running the code from inside a checkout on a system with Mercurial installed, then your deploy script can easily get/use the value -- perhaps by using hg archive to get the tarball to send which then automatically includes a .hg_archive.txt.

I guarantee you there's a prettier way to do this than the keywords extension no matter what your setup is.

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