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Re: Sorting file name

by Scot P. Floess-2 :: Rate this Message:

Here is a snippet beanshell that can do the work for you:

<scriptdef
name = "sortFiles"
language = "beanshell" >

<classpath>


</classpath>

<attribute name = "dir"/>

<![CDATA[
java.io.File dir = new java.io.File ( attributes.get (
"dir" ) );

String[] files = dir.list ();

int maxLen = 0;

for ( String file : files )
{
if ( file.length () > maxLen )
{
maxLen = file.length ();
}
}

StringBuilder sb = new StringBuilder ();

for ( int len = 0; len < maxLen; len++ )
{
sb.append ( ' ' );
}

String padding = sb.toString ();

java.util.TreeSet treeSet = new java.util.TreeSet ();

for ( String file : files )
{
if ( file.length () < maxLen )
{
treeSet.add ( padding.substring ( 0, maxLen -
file.length () ) + file );
}
else
{
treeSet.add ( file );
}
}

for ( String entry : treeSet )
{
System.out.println ( entry.trim () );
}
]]>
</scriptdef>

I tested and it definitely works :)

To run, I did this:

<sortFiles dir = "/home/sfloess/testdir"/>

The directory /home/sfloess/testdir contains the files:

10.sql 11.sql 1.sql 2.sql

The results when run:

[sortFiles] 1.sql
[sortFiles] 2.sql
[sortFiles] 10.sql
[sortFiles] 11.sql

HTH,

Flossy

On Tue, 23 Jun 2009, David Weintraub wrote:

> Well, there is the <script> task which can help you make this happen. It's
> an optional Ant task, and you need to include in a few additional jarfiles
> when you run Ant. <
> http://ant.apache.org/manual/install.html#librarydependencies>. The Script
> macro can be found here: <
> http://ant.apache.org/manual/OptionalTasks/script.html>.
>
> I've never used the script macro, so I can't help you there, but you are
> taking on a rather complex task.
>
> You need to collect the file names, create a "sortkey" for each file name,
> sort the files on that key, and then recall these names one-by-one. There is
> no "numeric sort" command I know of in most languages, so you'll have to do
> that yourself. You'll need to do that in an "approved" language which may
> not be a language you are familiar with.
>
> If you are a decent Java developer, you could try writing a custom Ant task.
> Information about that can be found in the Ant Manual here: <
> http://ant.apache.org/manual/tutorial-writing-tasks.html>.
>
> Lots of luck with your endeavor.
>
> On Mon, Jun 22, 2009 at 10:55 PM, Henry Suhatman <henry@...> wrote:
>
>> Yes it way to solve, but i don't want fill zero in first filename, if i
>> write new task i don't know where i had started :(
>> Anyone can suggest? Please advice me.
>>
>> Thx.
>>
>>
>> David Weintraub wrote:
>>
>>> Well, it is sorting the files by name. Unfortunately, it is sorting them
>>> in
>>> ASCII dictionary order.
>>>
>>> The easiest way (and maybe the only way) is to zero fill in the names of
>>> these files when you create them, so that you have 001.sql and 010.sql
>>> instead of 1.sql and 10.sql.
>>>
>>> That way, they'll sort in the order you want:
>>>
>>> 001.sql
>>> 002.sql
>>> 010.sql
>>> 011.sql
>>>
>>> I looked at Resource Collections, and there is a <sort> resource
>>> collection,
>>> but nothing to customize your sort order the way you want.
>>>
>>> You could write your own task or script, but it's probably not worth it.
>>>
>>>
>>> On Fri, Jun 19, 2009 at 7:15 PM, Henry Suhatman <henry@...>
>>> wrote:
>>>
>>>
>>>
>>>> Hi all,
>>>>
>>>> I have use foreach task from ant-contrib, the output like this
>>>> 1.sql
>>>> 10.sql
>>>> 11.sql
>>>> 2.sql
>>>>
>>>> And, i want to sort file name like this:
>>>> 1.sql
>>>> 2.sql
>>>> 10.sql
>>>> 11.sql
>>>>
>>>>
>>>> ----------------------------------------------------------------------------
>>>> This is my code :
>>>>
>>>>
>>>> ----------------------------------------------------------------------------
>>>> <project name="check" default="testing">
>>>> <taskdef resource="net/sf/antcontrib/antcontrib.properties"/>
>>>> <target name="testing">
>>>> <foreach param="file" target="loop">
>>>> <path>
>>>> <fileset dir="army">
>>>> <filename name="*.sql" />
>>>> </fileset>
>>>> </path>
>>>> </foreach>
>>>> </target>
>>>> <target name="loop"> <echo>${file}</echo>
>>>> </target>
>>>> </project>
>>>>
>>>> -------------------------------------------------------------------------------
>>>>
>>>> What should do to solve this problem?
>>>>
>>>> Thanks & Regards,
>>>>
>>>>
>>>>
>>>> Henry
>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: user-unsubscribe@...
>>>> For additional commands, e-mail: user-help@...
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: user-unsubscribe@...
>> For additional commands, e-mail: user-help@...
>>
>>
>
>
> --
> David Weintraub
> qazwart@...
>

Scot P. Floess
27 Lake Royale
Louisburg, NC 27549

252-478-8087 (Home)
919-890-8117 (Work)

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