## FileSet

FileSets are groups of files. These files can be found in a directory tree starting in a base directory and are matched by patterns taken from a number of PatternSets and Selectors. FileSets 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, FileSet holds an implicit PatternSet and supports the nested `<include>`, `<includesfile>`, `<exclude>` and `<excludesfile>` elements of PatternSet directly, as well as PatternSet's attributes.

Selectors are available as nested elements.within the FileSet. If any of the selectors within the FileSet do not select the file, the file is not considered part of the FileSet. This makes FileSets equivalent to an `<and>` selector container.

Attribute | Description | Required
dir | the root of the directory tree of this FileSet. | Either dir or file must be specified
file | shortcut for specifying a single file fileset
defaultexcludes | indicates whether default excludes should be used or not (`yes | no`); default excludes are used when omitted. | No
includes | comma- or space-separated list of patterns of files that must be included; all files 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 | comma- or space-separated list of patterns of files that must be excluded; no files (except default excludes) 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 | Must the include and exclude patterns be treated in a case sensitive way? Defaults to true. | No
followsymlinks | Shall symbolic links be followed? Defaults to true. See the note below. | No

Note: All files/directories for which the canonical path is different from its path are considered symbolic links. On Unix systems this usually means the file really is a symbolic links but it may lead to false results on other platforms.

#### Examples

>     <fileset dir="${server.src}" casesensitive="yes">
>       <include name="**/*.java"/>
>       <exclude name="**/*Test*"/>
>     </fileset>

Groups all files in directory `${server.src}` that are Java source files and don't have the text `Test` in their name.

>     <fileset dir="${server.src}" casesensitive="yes">
>       <patternset id="non.test.sources">
>         <include name="**/*.java"/>
>         <exclude name="**/*Test*"/>
>       </patternset>
>     </fileset>

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

>     <fileset dir="${client.src}" >
>       <patternset refid="non.test.sources"/>
>     </fileset>

Groups all files in directory `${client.src}`, using the same patterns as the above example.

>     <fileset dir="${server.src}" casesensitive="yes">
>       <filename name="**/*.java"/>
>       <filename name="**/*Test*" negate="true"/>
>     </fileset>

Groups the same files as the top example, but using the `<filename>` selector.

>     <fileset dir="${server.src}" casesensitive="yes">
>       <filename name="**/*.java"/>
>       <not>
>         <filename name="**/*Test*"/>
>       </not>
>     </fileset>

Groups the same files as the previous example using a combination of the `<filename>` selector and the `<not>` selector container.

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