NAME

       Doxygen::Filter::Perl - A perl code pre-filter for Doxygen

DESCRIPTION

       The Doxygen::Filter::Perl module is designed to provide support for documenting perl
       scripts and modules to be used with the Doxygen engine.  We plan on supporting most
       Doxygen style comments and POD (plain old documentation) style comments. The Doxgyen style
       comment blocks for methods/functions can be inside or outside the method/function.
       Doxygen::Filter::Perl is hosted at http://perldoxygen.sourceforge.net/

USAGE

       Install Doxygen::Filter::Perl via CPAN or from source.  If you install from source then
       do:

           perl Makefile.PL
           make
           make install

       Make sure that the doxygen-filter-perl script was copied from this project into your path
       somewhere and that it has RX permissions. Example:

           /usr/local/bin/doxygen-filter-perl

       Copy over the Doxyfile file from this project into the root directory of your project so
       that it is at the same level as your lib directory. This file will have all of the presets
       needed for documenting Perl code.  You can edit this file with the doxywizard tool if you
       so desire or if you need to change the lib directory location or the output location (the
       default output is ./doc).  Please see the Doxygen manual for information on how to
       configure the Doxyfile via a text editor or with the doxywizard tool.  Example:

           /home/jordan/workspace/PerlDoxygen/trunk/Doxyfile
           /home/jordan/workspace/PerlDoxygen/trunk/lib/Doxygen/Filter/Perl.pm

       Once you have done this you can simply run the following from the root of your project to
       document your Perl scripts or methods. Example:

           /home/jordan/workspace/PerlDoxygen/trunk/> doxygen Doxyfile

       All of your documentation will be in the ./doc/html/ directory inside of your project
       root.

DOXYGEN SUPPORT

       The following Doxygen style comment is the preferred block style, though others are
       supported and are listed below:

           #**
           # ........
           #*

       You can also start comment blocks with "##" and end comment blocks with a blank line or
       real code, this allows you to place comments right next to the subroutines that they refer
       to if you wish.  A comment block must have continuous "#" comment markers as a blank line
       can be used as a termination mark for the doxygen comment block.

       In other languages the Doxygen @fn structural indicator is used to document
       subroutines/functions/methods and the parsing engine figures out what is what.  In Perl
       that is a lot harder to do so I have added a @method and @function structural indicator so
       that they can be documented seperatly.

   Supported Structural Indicators
           #** @file [filename]
           # ........
           #*

           #** @class [class name (ex. Doxygen::Filter::Perl)]
           # ........
           #*

           #** @method or @function [public|protected|private] [method-name] (parameters)
           # ........
           #*

           #** @attr or @var [public|protected|private] [type] {$%@}[attribute-name] [brief description]
           # ........
           #*

           #** @section [section-name] [section-title]
           # ........
           #*

           #** @brief [notes]
           # ........
           #*

   Support Style Options and Section Indicators
       All doxygen style options and section indicators are supported inside the structural
       indicators that we currently support.

   Documenting Subroutines/Functions/Methods
       The Doxygen style comment blocks that describe a function or method can exist before,
       after, or inside the subroutine that it is describing. Examples are listed below. It is
       also important to note that you can leave the public/private out and the filter will guess
       based on the subroutine name. The normal convention in other languages like C is to have
       the function/method start with an "_" if it is private/protected.  We do the same thing
       here even though there is really no such thing in Perl. The whole reason for this is to
       help users of the code know what functions they should call directly and which they should
       not.  The generic documentation blocks for functions and methods look like:

           #** @function [public|protected|private] [return-type] function-name (parameters)
           # @brief A brief description of the function
           #
           # A detailed description of the function
           # @params value [required|optional] [details]
           # @retval value [details]
           # ....
           #*

           #** @method [public|protected|private] [return-type] method-name (parameters)
           # @brief A brief description of the method
           #
           # A detailed description of the method
           # @params value [required|optional] [details]
           # @retval value [details]
           # ....
           #*

       The parameters would normally be something like $foo, @bar, or %foobar.  I have also added
       support for scalar, array, and hash references and those would be documented as $$foo,
       @$bar, %$foobar.  An example would look this:

           #** @method public ProcessDataValues ($$sFile, %$hDataValues)

   Function / Method Example
           sub test1
           {
               #** @method public test1 ($value)
               # ....
               #*
           }

           #** @method public test2 ($value)
           # ....
           #*
           sub test2
           {

           }

DATA STRUCTURE

           $self->{'_hData'}->{'filename'}->{'fullpath'}   = string
           $self->{'_hData'}->{'filename'}->{'shortname'}  = string
           $self->{'_hData'}->{'filename'}->{'version'}    = string
           $self->{'_hData'}->{'filename'}->{'details'}    = string
           $self->{'_hData'}->{'includes'}                 = array

           $self->{'_hData'}->{'class'}->{'classorder'}                = array
           $self->{'_hData'}->{'class'}->{$class}->{'subroutineorder'} = array
           $self->{'_hData'}->{'class'}->{$class}->{'attributeorder'}  = array
           $self->{'_hData'}->{'class'}->{$class}->{'details'}         = string
           $self->{'_hData'}->{'class'}->{$class}->{'comments'}        = string

           $self->{'_hData'}->{'class'}->{$class}->{'subroutines'}->{$method}->{'type'}        = string (method / function)
           $self->{'_hData'}->{'class'}->{$class}->{'subroutines'}->{$method}->{'returntype'}  = string (return type)
           $self->{'_hData'}->{'class'}->{$class}->{'subroutines'}->{$method}->{'state'}       = string (public / private)
           $self->{'_hData'}->{'class'}->{$class}->{'subroutines'}->{$method}->{'parameters'}  = string (method / function parameters)
           $self->{'_hData'}->{'class'}->{$class}->{'subroutines'}->{$method}->{'code'}        = string
           $self->{'_hData'}->{'class'}->{$class}->{'subroutines'}->{$method}->{'length'}      = integer
           $self->{'_hData'}->{'class'}->{$class}->{'subroutines'}->{$method}->{'details'}     = string
           $self->{'_hData'}->{'class'}->{$class}->{'subroutines'}->{$method}->{'comments'}    = string

           $self->{'_hData'}->{'class'}->{$class}->{'attributes'}->{$variable}->{'state'}      = string (public / private)
           $self->{'_hData'}->{'class'}->{$class}->{'attributes'}->{$variable}->{'modifiers'}  = string
           $self->{'_hData'}->{'class'}->{$class}->{'attributes'}->{$variable}->{'comments'}   = string
           $self->{'_hData'}->{'class'}->{$class}->{'attributes'}->{$variable}->{'details'}    = string

AUTHOR

       Bret Jordan <jordan at open1x littledot org> or <jordan2175 at gmail littledot com>

LICENSE

       Doxygen::Filter::Perl is licensed with an Apache 2 license. See the LICENSE file for more
       details.