如何使用自定义蚂蚁规则正则表达式更改属性文件中的属性 [英] How to use custom ant rule regexpression to change property in propertyfile

问题描述

在我的 Android 项目中，我在 project.properties 文件中设置了以下属性

In my Android project I have the following property set in my project.properties file

proguard.config=proguard.cfg

而且我需要一个自定义宏来以某种方式设置和取消设置此属性.

and I need a custom macro that will somehow set and unset this property.

如何使用宏和正则表达式取消设置此属性?我不清楚的两件事是如何将其设置为空属性值.将那只是 proguard.config=或 proguard.config=''

How do I set unset this property using macro and regular expression? two things I am not clear on is how to set this to an empty property value. Would that be just proguard.config= or proguard.config=''

这样做的宏是什么?

 <macrodef name="turn-on-proguard">
    <sequential>    
       <replaceregexp file="./project.properties"
                            match='proguard.config="(.*)"'
                            replace='proguard.config=proguard.cfg'
                            byline="false">         
        </replaceregexp>
    </sequential>
</macrodef>



 <macrodef name="turn-off-proguard">
    <sequential>    
       <replaceregexp file="./project.properties"
                            match='proguard.config="(.*)"'
                            replace='proguard.config='
                            byline="false">         
        </replaceregexp>
    </sequential>
</macrodef>

这行得通吗?更新.turn-proguard-off 什么都不做.

Would this work? Update. turn-proguard-off does nothing.

推荐答案

你的解决方案对我来说很不清楚.为什么不转义点字符?为什么在正则表达式中使用引号和分组?这是工作脚本:

Your solution is very unclear for me. Why don't you escape the dot character? Why do you use quotation marks and grouping in your regexp? This is working script:

<macrodef name="turnonproguard">
    <sequential>    
       <replaceregexp file="project.properties"
                match='proguard\.config=.*'
                replace='proguard.config=proguard.cfg'
                byline="false"/>
    </sequential>
</macrodef>

<macrodef name="turnoffproguard">
    <sequential>    
       <replaceregexp file="project.properties"
                match='proguard\.config=.*'
                replace='proguard.config='
                byline="false"/>
    </sequential>
</macrodef>

<target name="on">
    <turnonproguard/>
</target>

<target name="off">
    <turnoffproguard/>
</target>

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