DirSet Type

## DirSet

DirSets are groups of directories. These directories can be found in a directory tree starting in a base directory and are matched by patterns taken from a number of PatternSets. DirSets can appear inside tasks that support this feature or at the same level as `target` (i.e., as children of `<project>`).

PatternSets can be specified as nested `<patternset>` elements. In addition, DirSet holds an implicit PatternSet and supports the nested `<include>`, `<includesfile>`, `<exclude>` and `<excludesfile>` elements of `<patternset>` directly, as well as `<patternset>`'s attributes.

Attribute | Description | Required
dir | The root of the directory tree of this DirSet. | Yes
includes | A comma- or space-separated list of patterns of directories that must be included; all directories are included when omitted. | No
includesfile | The name of a file; each line of this file is taken to be an include pattern. | No
excludes | A comma- or space-separated list of patterns of directories that must be excluded; no directories are excluded when omitted. | No
excludesfile | The name of a file; each line of this file is taken to be an exclude pattern. | No
casesensitive | Specifies whether case-sensitivty should be applied (`true`|`yes`|`on` or `false`|`no`|`off`). | No; defaults to true.
followsymlinks | Shall symbolic links be followed? Defaults to true. See fileset's documentation. | No

#### Examples

>     <dirset dir="${build.dir}">
>       <include name="apps/**/classes"/>
>       <exclude name="apps/**/*Test*"/>
>     </dirset>

Groups all directories named `classes` found under the `apps` subdirectory of `${build.dir}`, except those that have the text `Test` in their name.

>     <dirset dir="${build.dir}">
>       <patternset id="non.test.classes">
>         <include name="apps/**/classes"/>
>         <exclude name="apps/**/*Test*"/>
>       </patternset>
>     </dirset>

Groups the same directories as the above example, but also establishes a PatternSet that can be referenced in other `<dirset>` elements, rooted at a different directory.

>     <dirset dir="${debug_build.dir}">
>       <patternset refid="non.test.classes"/>
>     </dirset>

Groups all directories in directory `${debug_build.dir}`, using the same patterns as the above example.

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