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Question

我有一个文件有很多行，如：

aaa  bbb  ccc  ddd  eeee
a111 b111 c111 d111
A222 B222 X222 Y222 Z222
FFF  GGG  HHH

等

我希望使用ant来提取此文件中的所有子字符串

aaa  bbb  ccc  ddd  eeee
a111 b111 c111 d111
A222 B222 X222 Y222 Z222
FFF  GGG  HHH

在每一行，即所有aaa bbb ccc ddd eee在第1行，所有FFF GGG HHH在最后一行等

请帮忙怎么做但不使用正则表达式???

我的代码是：

<for list="@{line}"  delimiter=" " param = "val">
                <sequential>
                    <echo>in sequential : @{line}</echo>
                        <var name="first.part" value="1"/>
                        <var name="second.part" value="2"/>
                        <var name="third.part" value="3"/>
                        <propertyregex
                            property="first.part"
                            input="@{line}"
                            select="\0"/>
                        <propertyregex
                            property="second.part"
                            input="@{line}"
                            select="\1"/>
                        <propertyregex
                            property="third.part"
                            input="@{line}"
                            select="\2"/>
                        <echo> after assign: 1st.part = ${first.part}</echo>
                        <echo> after assign: 2nd.part = ${second.part}</echo>
                        <echo> after assign: 3rd.part = ${third.part}</echo>
            </sequential>

</for>

但是ant 1.6不支持正则表达式，我收到了错误：该类型不支持＆＃34; regex＆＃34;属性。

如何解决？感谢

Answer 1

ANT不是一种编程语言。你最好建议嵌入一个。

以下示例使用groovy：

<project name="demo" default="scan">

    <target name="bootstrap">
        <mkdir dir="${user.home}/.ant/lib"/>
        <get dest="${user.home}/.ant/lib/groovy.jar" src="http://search.maven.org/remotecontent?filepath=org/codehaus/groovy/groovy-all/2.1.3/groovy-all-2.1.3.jar"/>
    </target>

    <target name="scan">
        <taskdef name="groovy" classname="org.codehaus.groovy.ant.Groovy"/>
        <groovy>
        new File("File1.txt").eachLine {
            def values = it.split()

            ant.echo "Extracted values: ${values}"

            values.each {
                ant.echo "Need to so something with ${it}"
            }
        }
        </groovy>
    </target>

</project>

生成以下输出

scan:
     [echo] Extracted values: [aaa, bbb, ccc, ddd, eeee]
     [echo] Need to so something with aaa
     [echo] Need to so something with bbb
     [echo] Need to so something with ccc
     [echo] Need to so something with ddd
     [echo] Need to so something with eeee
     [echo] Extracted values: [a111, b111, c111, d111]
     [echo] Need to so something with a111
     [echo] Need to so something with b111
     [echo] Need to so something with c111
     [echo] Need to so something with d111
     [echo] Extracted values: [A222, B222, X222, Y222, Z222]
     [echo] Need to so something with A222
     [echo] Need to so something with B222
     [echo] Need to so something with X222
     [echo] Need to so something with Y222
     [echo] Need to so something with Z222
     [echo] Extracted values: [FFF, GGG, HHH]
     [echo] Need to so something with FFF
     [echo] Need to so something with GGG
     [echo] Need to so something with HHH

更新

启用groovy任务的另一种方法是使用类路径引用，如下所示：

<path id="build.path">
    <pathelement location="/path/to/groovy-all/jar/groovy-all-2.1.3.jar"/>
</path>

<taskdef name="groovy" classname="org.codehaus.groovy.ant.Groovy" classpathref="build.path"/>

如何使用ant来提取文件中的所有子字符串而不使用正则表达式

1 个答案:

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