如何从 ant 构建脚本中查找最新的 git commit hash [英] How to lookup the latest git commit hash from an ant build script

问题描述

如何从 ant 构建脚本中查找最新的 git commit 哈希?

How can I lookup the latest git commit hash from an ant build script?

我目前正在开发一个存储在 github 上的新开源项目.我想扩展我现有的 ANT 构建文件以允许我创建编号的构建.我想象着我会用ant buildnum -Dnum=12"之类的东西启动构建.

I am currently working on a new open source project which I store on github. I would like to extend my existing ANT build file to allow me to create numbered builds. I am imagining that I would launch the build with something like "ant buildnum -Dnum=12".

我希望生成的 jar 在其清单文件中包含两个关键信息:

I would like the resulting jar to have two crucial bits of information in it's manifest file:

• build.number=12
• build.gitcommit=

我知道如何创建 build.number 行.但是，我不确定查找最新的 git commit hash 的最佳蚂蚁管道，这是我想要填写的值.

I know how to create the build.number line. However, I am unsure of the best ant plumbing to lookup the latest git commit hash which is the value I want to fill in for .

推荐答案

我在 github 上为一个项目编写了以下 ant 目标.用法:

I wrote the following ant target for a project on github. Usage:

• 在属性repository.version"中存储版本
• 在没有安装 git 或没有 .git 目录时工作(后备)
• 其他目标如果需要 git 版本，则必须依赖此目标
• 只执行一个 git 命令(--always)

<available file=".git" type="dir" property="git.present"/>

<target name="git.revision" description="Store git revision in ${repository.version}" if="git.present">
    <exec executable="git" outputproperty="git.revision" failifexecutionfails="false" errorproperty="">
        <arg value="describe"/>
        <arg value="--tags"/>
        <arg value="--always"/>
        <arg value="HEAD"/>
    </exec>
    <condition property="repository.version" value="${git.revision}" else="unknown">
        <and>
            <isset property="git.revision"/>
            <length string="${git.revision}" trim="yes" length="0" when="greater"/>
        </and>
    </condition>
</target>

例如用于扩展模板文件中的令牌@repository.version@:

It e.g. be used for expanding the token @repository.version@ in a template file:

<target name="index.html" depends="git.revision" description="build index.html from template">
    <copy file="index.html.template" tofile="index.html" overwrite="yes">
        <filterchain>
            <replacetokens>
                <token key="repository.version" value="${repository.version}" />
            </replacetokens>
        </filterchain>
    </copy>
</target>

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