Description:

The CLI index provides an API for processing command line interfaces.

The implementation is based on the Jakarta Commons CLI2 library written
by John Keyes and Rob Oxspring.

CLI1 was formed by the merger of ideas and code from three different
libraries and allows most simple interfaces to be modelled. CLI1 became
increasingly difficult to maintain and develop further and so CLI2 was
developed with the goals of clearer responsibilities and being more
flexible. The intention was that CLI2 would be able to model a far
greater selection of interfaces and do so more completely, validating
as much as possible.

The DPML codebase was established in late 2005 based on a fork of the
Jarkata Commons CL2 content as CLI2 development with Jakarta Commons
appears to have stopped around April 2005. Modification to the codebase
applied during incorporation under DPML include removal of CLI1
content, resolution of a number of testcase failures, removal of file
validation hidden feature (due to platform inconsitencies at the JVM
level), removal of Maven dependencies in the build and test procedures,
resolution of issues in the Help formatter, package renaming,
documentation enhancements, upgrading of the codebase to be compliant
with DPML style guidelines, and additions to the argument validator
package.