Parsing directory names

[Suzanne Dorman <su...@segsoftware.com>]

I have the following directory structure:

2005_1.0
       filea
       fileb
2005_1.1
       filec
2005_1.1.1
       filed
2005_2.0
       filee


My build needs to determine which files to zip based on the directory name.
If the user specifies 1.1, I need to include all files in the 2005_1.0 and
2005_1.1 directories but not the other directories (their version numbers
are higher).  In order to write the logic to determine the proper
directories, I need to parse the directory names.  

I first need to separate out the '2005' as a variable.  I then need
everything after the underscore as another variable (we'll call it
$version).  Once I have $version, I may need to separate out the characters
separated by '.' to determine if the version is higher or lower than the
user specified value. 

I can get the list of directory names and put them in a foreach without any
problem but I don't know how to parse the string I get.  In fact, I can't
find anything for string manipulation in Ant or ant-contrib.  Is there such
a thing?

Thanks in advance for any help,
Suzanne Dorman




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Re: Parsing directory names

[Matt Benson <gu...@yahoo.com>]

--- Dominique Devienne <dd...@gmail.com> wrote:

> On 10/4/06, Suzanne Dorman
> <su...@segsoftware.com> wrote:
[SNIP]
> > I can get the list of directory names and put them
> in a foreach without any
> > problem but I don't know how to parse the string I
> get.  In fact, I can't
> > find anything for string manipulation in Ant or
> ant-contrib.  Is there such
> > a thing?
> 
> Yes, but in convoluted ways only.  I'd do it in Java
> as a custom task
> (defining a <path> for example, or a new resource
> collection in 1.7),
> or I'd use a <script>. Ant now has a DeweyDecimal
> utility (which
> hopefully implement Comparable). That's the jist of
> it ;-) Sorry,
> can't help more than by giving high level hints.

I like this; in fact it seem entirely natural that,
Ant 1.7, having ResourceCollections,
ResourceComparators, and ResourceSelectors, should
also have a compare ResourceSelector that uses a
Comparison "when" EA to select Resources that are
eq/ne/gt/lt/ge/le a given resource according to
specified ResourceComparators.  I will try to get this
in soon with an example that speaks to this use case.

-Matt

> --DD
> 
>
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Re: Parsing directory names

[Dominique Devienne <dd...@gmail.com>]

On 10/4/06, Suzanne Dorman <su...@segsoftware.com> wrote:
> I have the following directory structure:
>
> 2005_1.0
>       filea
>       fileb
> 2005_1.1
>       filec
> 2005_1.1.1
>       filed
> 2005_2.0
>       filee
>
>
> My build needs to determine which files to zip based on the directory name.
> If the user specifies 1.1, I need to include all files in the 2005_1.0 and
> 2005_1.1 directories but not the other directories (their version numbers
> are higher).  In order to write the logic to determine the proper
> directories, I need to parse the directory names.
>
> I first need to separate out the '2005' as a variable.  I then need
> everything after the underscore as another variable (we'll call it
> $version).  Once I have $version, I may need to separate out the characters
> separated by '.' to determine if the version is higher or lower than the
> user specified value.
>
> I can get the list of directory names and put them in a foreach without any
> problem but I don't know how to parse the string I get.  In fact, I can't
> find anything for string manipulation in Ant or ant-contrib.  Is there such
> a thing?

Yes, but in convoluted ways only.  I'd do it in Java as a custom task
(defining a <path> for example, or a new resource collection in 1.7),
or I'd use a <script>. Ant now has a DeweyDecimal utility (which
hopefully implement Comparable). That's the jist of it ;-) Sorry,
can't help more than by giving high level hints. --DD

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