blocks|key|1514412|text|你的意思是，像这样的东西(基于pathconvert+task，在this+idea之后)：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1514413|<target+name="checkEclipseRcp">
++<pathconvert+property="foundRcp"+setonempty="false"+pathsep="+">
++++<path>
++++++<fileset+dir="/folder/folder/eclipse"
+++++++++++++++includes="org.eclipse.rcp_3.5.0.*"+/>
++++</path>
++</pathconvert>
</target>

<target+name="process"+depends="checkEclipseRcp"+if="foundRcp">
++
</target>|code-block|syntax|javascript|1514414|entityMap|0|LINK|mutability|MUTABLE|url|http://ant.apache.org/manual/Tasks/pathconvert.html|1|http://marc.info/?l=ant-user&m=109647070406692&w=2^0|F|G|0|X|9|1|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]|$A|W|B|X|1|Y]]|C|$]]|$1|D|3|E|5|F|7|Z|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|10|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]|Q|$5|L|M|N|C|$O|R]]]]

You mean, something like (based on the <a href="http://ant.apache.org/manual/Tasks/pathconvert.html" rel="noreferrer">pathconvert task</a>, after <a href="http://marc.info/?l=ant-user&amp;m=109647070406692&amp;w=2" rel="noreferrer">this idea</a>):

<pre><code>&lt;target name="checkEclipseRcp"&gt;
 &lt;pathconvert property="foundRcp" setonempty="false" pathsep=" "&gt;
 &lt;path&gt;
 &lt;fileset dir="/folder/folder/eclipse"
 includes="org.eclipse.rcp_3.5.0.*" /&gt;
 &lt;/path&gt;
 &lt;/pathconvert&gt;
&lt;/target&gt;

&lt;target name="process" depends="checkEclipseRcp" if="foundRcp"&gt;
 &lt;!-- do something --&gt;
&lt;/target&gt;
</code></pre>

blocks|key|1299688|text|在大多数情况下，路径转换任务可能是首选的方法。但是，当目录树非常大并且使用echoproperties任务时，它会产生一个小问题。对于非常大的目录树，pathconvert生成的字符串可能很大。然后，echoproperties会喷出这个巨大的字符串，使得输出更加难以处理。我在Linux上使用了一个宏定义，如果目录中有文件，它会创建一个设置为"1“的属性：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1299689|<macrodef+name="chkDirContents"+>
++++<attribute+name="propertyName"+/>
++++<attribute+name="dirPath"+/>
++++<attribute+name="propertyFile"+/>
++++<sequential>
++++++++<exec+executable="sh"+dir="."+failonerror="false"+>
++++++++++++<arg+value="-c"+/>
++++++++++++<arg+value='fyles=`ls+-1+@{dirPath}+%7C+head+-1`+;+if+[+"$fyles"+!=+""+]+;+then+echo+@{propertyName}=1+>+@{propertyFile}+;+fi'+/>
++++++++</exec>
++++</sequential>
</macrodef>

<target+name="test"+>
++++<tempfile+destdir="."+property="temp.file"+deleteonexit="true"+/>
++++<chkDirContents+propertyName="files.exist"+dirPath="./target_dir"+propertyFile="${temp.file}"+/>
++++<property+file="${temp.file}"+/>

++++<echoproperties/>
</target>|code-block|syntax|javascript|1299690|如果./+target+_dir/目录中有文件，执行"test“目标将生成以下will属性行：|1299691|[echoproperties]+files.exist=1|1299692|“测试”的作用:它生成一个临时文件名${temp.file}，稍后可以将其用作属性文件。然后，它执行宏定义，该宏定义调用外壳来检查dirPath目录的内容。如果dirPath中有任何文件或目录，它会在临时文件中为propertyName属性赋值1。然后，它读取该文件并设置文件中给定的属性。如果文件为空，则未定义任何属性。|1299693|请注意，如果需要，可以将临时文件重用于后续的宏定义调用。当然，另一方面，一旦属性被设置，它就是不可变的。|1299694|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

The pathconvert task is probably the preferred way to go in most cases. But it creates a little problem when the directory tree is very large and one uses the echoproperties task. With a very large directory tree, the string generated by pathconvert can be huge. Then echoproperties sprays the huge string, making the output more difficult to work with. I use a macrodef on Linux that creates a property set to "1" if there are files in the directory:

<pre><code>&lt;macrodef name="chkDirContents" &gt;
 &lt;attribute name="propertyName" /&gt;
 &lt;attribute name="dirPath" /&gt;
 &lt;attribute name="propertyFile" /&gt;
 &lt;sequential&gt;
 &lt;exec executable="sh" dir="." failonerror="false" &gt;
 &lt;arg value="-c" /&gt;
 &lt;arg value='fyles=`ls -1 @{dirPath} | head -1` ; if [ "$fyles" != "" ] ; then echo @{propertyName}=1 &gt; @{propertyFile} ; fi' /&gt;
 &lt;/exec&gt;
 &lt;/sequential&gt;
&lt;/macrodef&gt;

&lt;target name="test" &gt;
 &lt;tempfile destdir="." property="temp.file" deleteonexit="true" /&gt;
 &lt;chkDirContents propertyName="files.exist" dirPath="./target_dir" propertyFile="${temp.file}" /&gt;
 &lt;property file="${temp.file}" /&gt;

 &lt;echoproperties/&gt;
&lt;/target&gt;
</code></pre>

Executing the "test" target will generate the following echoproperties line if there are files in the ./target_dir/ directory:

<pre><code>[echoproperties] files.exist=1
</code></pre>

What "test" does:
It generates a temporary filename, ${temp.file}, that can later be used as a property file.
It then executes the macrodef, which calls the shell to check the contents of the dirPath directory. If there are any files or directories in dirPath, it assigns the propertyName property a value of 1 in the temporary file. It then reads the file and sets the property given in the file. If the file is empty, no property is defined.

Note that the temporary file could be reused for subsequent calls of the macrodef if desired. On the other hand, of course, once a property is set, it is immutable.

blocks|key|1299781|text|使用resourcecount条件的一种稍微简短、更直接的方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1299782|<target+name="checkEclipseRcp">
++++<condition+property="foundRcp">
++++++++<resourcecount+when="greater"+count="0">
++++++++++++<fileset+file="/folder/folder/eclipse/org.eclipse.rcp_3.5.0.*"/>
++++++++</resourcecount>
++++</condition>
</target>

<target+name="process"+depends="checkEclipseRcp"+if="foundRcp">
++
</target>|code-block|syntax|javascript|1299783|entityMap|0|LINK|mutability|MUTABLE|url|http://ant.apache.org/manual/Tasks/resourcecount.html^0|2|D|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

A slightly shorter and more straightforward approach with <a href="http://ant.apache.org/manual/Tasks/resourcecount.html" rel="noreferrer">resourcecount</a> condition:

<pre><code>&lt;target name="checkEclipseRcp"&gt;
 &lt;condition property="foundRcp"&gt;
 &lt;resourcecount when="greater" count="0"&gt;
 &lt;fileset file="/folder/folder/eclipse/org.eclipse.rcp_3.5.0.*"/&gt;
 &lt;/resourcecount&gt;
 &lt;/condition&gt;
&lt;/target&gt;

&lt;target name="process" depends="checkEclipseRcp" if="foundRcp"&gt;
 &lt;!-- do something --&gt;
&lt;/target&gt;
</code></pre>

I'm using an Ant build script to collate my Eclipse-based application for distribution.

One step of the build is to check that the correct libraries are present in the build folders. I currently use the Ant command for this. Unfortunately, I have to amend the script each time I switch to a new Eclipse build (since the version numbers will have updated). 

I don't need to check the version numbers, I just need to check that the file's there.

So, how do I check for:

<pre><code>org.eclipse.rcp_3.5.0.*
</code></pre>

instead of:

<pre><code>org.eclipse.rcp_3.5.0.v20090519-9SA0FwxFv6x089WEf-TWh11
</code></pre>

using Ant?

cheers,
Ian

How to use wildcard in Ant's Available command

Eclipse

Linux

我正在使用一个Ant构建脚本来整理我的基于Eclipse的应用程序以进行分发。构建的一个步骤是检查构建文件夹中是否存在正确的库。我目前使用的是Ant命令。不幸的是，每次切换到新的Eclipse版本时，我都必须修改脚本(因为版本号将会更新)。我不需要检查版本号，我只需要检查文件是否在那里。那么，我该如何检查：org.ec...

问如何在Ant的Available命令中使用通配符
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