如何查找最新的git从Ant构建脚本提交哈希 [英] How to lookup the latest git commit hash from an ant build script

问题描述

如何查找最新的git从Ant构建脚本提交哈希？

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

我目前正在对我存放在GitHub上一个新的开源项目。我想延长我现有的Ant构建文件，让我创建编号生成。我想象，我会的东西，如启动打造蚁buildnum -Dnum = 12。

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".

我想产生的罐子有它的信息两个关键位的清单文件：

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线。不过，我不能确定最好的蚂蚁水暖查找最新的git的承诺哈希这是我要填写的值。

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

我写了下面的蚂蚁目标在github上的项目。用法：

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

• 商店版本财产repository.version

如果没有安装的git或没有.git目录是present（后备）
• 工作
  
• 其他目标必须依赖于这个目标，如果他们需要Git版本


• 只有一个混帐命令被执行（--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>

据例如用于扩展标记 @ repository.version @ 在模板文件：

<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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