#!/usr/bin/perl

# yaala - Yet Another Advanced Log Analyser
# Copyright (C) 2000-2007  Florian octo Forster
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation; only version 2 of the license is applicable.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 675 Mass
# Ave, Cambridge, MA 02139, USA.

BEGIN
{
	if ($0 =~ m#^(.*)[/\\]#) { chdir ($1); }
	
	unshift (@::INC, 'lib');
	
# 0x010: lib/Data/Core.pm
# 0x020: lib/Data/Setup.pm
# 0x040: lib/Data/Convert.pm
# 0x080: lib/Data/Core.pm (dump any data stored!)
# 0x100: lib/Report/GDGraph.pm
# 0x200: lib/Data/Persistent.pm
# 0x2000: lib/Yaala/Parser/WebserverTools.pm

	$::DEBUG = 0x0000;
}

use strict;
use warnings;
use vars qw(
	$DEBUG
	$EXTRA

	$NAME
	$VERSION
	$HOMEPAGE
);

use Carp;
use Yaala::Config qw#get_config parse_argv read_config#;

$NAME = 'yaala';
$VERSION = '0.7.3';
$HOMEPAGE = 'http://yaala.org/';

if ($DEBUG)
{
	select STDOUT;
	$| = 1;
}

$EXTRA = {};

print STDERR $/, __FILE__, ': $Id: yaala,v 1.17 2004/11/10 10:07:43 octo Exp $' if ($DEBUG);

parse_argv (@ARGV);
read_config (get_config ('config') ? get_config ('config') : 'config');

unless (get_config ('input'))
{
	usage ();
	exit (1);
}

# report and data initialization needs parser module
my $logtype = get_config ('logtype');
my $report  = get_config ('report' );
$logtype ||= 'Common';
$report  ||= 'Combined';
$logtype = ucfirst (lc ($logtype));
$report  = ucfirst (lc ($report ));

require "Yaala/Parser/$logtype.pm";
require "Yaala/Report/$report.pm";
import Yaala::Parser qw#parse extra#;
import Yaala::Report qw#generate#;

print STDERR $/, __FILE__, ": Accumulating data.." if ($DEBUG);

my $num_read_files = 0;

for (get_config ('input'))
{
	#no strict 'refs';
	if (open (LOGFILE, '< ' . $_))
	{
		print STDERR $/, __FILE__, qq#: Reading "$_"# if ($DEBUG);
		$num_read_files++;
		
		parse ($_) while (<LOGFILE>);
		
		close LOGFILE;
	}
	else
	{
		print STDERR $/, __FILE__, qq#: Error opening "$_": $!#;
	}
}
if (!$num_read_files)
{
	print STDERR $/, __FILE__, ": Could not read any files. Exiting.\n";
	exit (1);
}

extra ();

print STDERR $/, __FILE__, ': Generating pages..' if ($DEBUG);
generate ();

print STDERR $/, __FILE__, ": Exiting.." if ($DEBUG);

exit (0);

##################################################
#    end of main program                         #
#---=====================------------------------#
# surprised?? well, it's pretty short, cause all #
# the _real_ work is done in the the modules.    #
# If you write a modul by your own: PLEASE send  #
# me a copy so that i can include it in the      #
# package.                                       #
# And how about 12 modules at a time ? -- qmax   #
# Awesome :) -- octo                             #
##################################################

sub usage
{
	print STDOUT <<EOF;

Usage: $0 [--<key> <value>] file1 .. fileN

Options:
	--config	Specify alternate config file
	--directory	yaala will write all generated files to this
			directory (and overwrite existing ones without
			prompting!)
	--report	Selects the report type to use
	--logtype	Specifies the type of logfiles to parse
	--select	Select statements. See README.selections

You can prepend two dashes to every keyword in the config file and
configure yaala from the command line.
EOF
	return (1);
}

END
{
	print STDERR $/ if ($DEBUG);
}