# =======================================================================
# Doxygen Pre-Processor for Perl
# Copyright (C) 2002  Bart Schuller
# Copyright (C) 2006  Phinex Informatik AG
# All Rights Reserved
#
# Doxygen Filter is free software; you can redistribute it and/or modify
# it under the same terms as Perl itself.
#
# Larry Wall's 'Artistic License' for perl can be found in
# http://www.perl.com/pub/a/language/misc/Artistic.html
#
# =======================================================================
#
# Author: Aeby Thomas, Phinex Informatik AG,
# 	  Based on DoxygenFilter from Bart Schuller
# E-Mail: tom.aeby@phinex.ch
#
# Phinex Informatik AG
# Thomas Aeby
# Kirchweg 52
# 1735 Giffers
#
# =======================================================================
#
# @(#) $Id: SQLFilter.pm,v 1.2 2006/01/31 16:53:52 aeby Exp $
#
# Revision History:
#
# $Log: SQLFilter.pm,v $
# Revision 1.2  2006/01/31 16:53:52  aeby
# added copyright info
#
#
# =======================================================================

## @file
# implementation of DoxyGen::SQLFilter.
#

## @class
# Filter from SQL syntax API docs to Doxygen-compatible syntax.
# This class is meant to be used as a filter for the
# <a href="http://www.doxygen.org/">Doxygen</a> documentation tool.
package DoxyGen::SQLFilter;

use warnings;
use strict;
use base qw(DoxyGen::Filter);

## @method void filter($infh)
# do the filtering.
# @param infh input filehandle, normally STDIN
sub filter {
    my ( $self, $infile ) = @_;
    open( my $infh, $infile );
    my $current_class;
    while (<$infh>) {
        if (/\/\*\*\s*\@(\S+)\s*(.*)/) {
            my ( $command, $args ) = ( $1, $2 );
            my @more;
            while (<$infh>) {
                if (/\*\//) {

                    # We expect to be on the line after a comment.
                    $_ = <$infh>;
                    last;
                }
                else {
                    /\s*(\*\s)?(.+)/s;
                    push @more, $2;
                }
            }
            if ( $command eq 'file' ) {
                $args ||= $infile;
                $self->start("\@$command $args");
                $self->more(@more);
                $self->end;
            }
            elsif ( $command eq 'class' ) {
                unless ($args) {
                    ($args) = /package\s(\S*)/;
                }
                if ($current_class) {
                    $self->flush;
                    $self->print("}\n");
                }
                $current_class = $args;
                $self->start("\@$command $args")->more(@more);
                $self->print("\@nosubgrouping")->end;

                $self->print("class $args");
                $self->print(" {\npublic:\n");
            }
            elsif ( $command eq 'fn' ) {
                unless ($args) {
                    ($args) = /function\s+(.*)\b/;
                    $args = "retval $args(\@args)";
                }
                $self->push( $self->protection($args) . ' Functions' );
                $self->start("\@fn $args")->more(@more)->end;
                $self->print( $args, ";\n" );
                $self->pop;
            }
            else {
                $self->start("\@$command $args");
                $self->more(@more);
                $self->end;
            }

            # We ate a line when we got the rest of the comment lines
            redo if defined $_;
        }
        elsif (/\@(\w+)/) {
            my $inc = $1;
            $self->print("#include \"$inc.sql\"\n");
        }
    }
    if ($current_class) {
        $self->flush;
        $self->print("}\n");
    }
}

1;