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#-*- perl -*-
#
# Copyright (C) 2002,2003,2004 Ken'ichi Fukamachi
# All rights reserved. This program is free software; you can
# redistribute it and/or modify it under the same terms as Perl itself.
#
# $FML: log.pm,v 1.25 2004/02/01 14:39:00 fukachan Exp $
#
package FML::Command::Admin::log;
use strict;
use vars qw(@ISA @EXPORT @EXPORT_OK $AUTOLOAD);
use Carp;
=head1 NAME
FML::Command::Admin::log - log file operations
=head1 SYNOPSIS
See C<FML::Command> for more details.
=head1 DESCRIPTION
show log file(s).
=head1 METHODS
=head2 process($curproc, $command_args)
=cut
# Descriptions: constructor.
# Arguments: OBJ($self)
# Side Effects: none
# Return Value: OBJ
sub new
{
my ($self) = @_;
my ($type) = ref($self) || $self;
my $me = {};
return bless $me, $type;
}
# Descriptions: need lock or not
# Arguments: none
# Side Effects: none
# Return Value: NUM( 1 or 0)
sub need_lock { 0;}
# Descriptions: show log file.
# Arguments: OBJ($self) OBJ($curproc) HASH_REF($command_args)
# Side Effects: update $member_map $recipient_map
# Return Value: none
sub process
{
my ($self, $curproc, $command_args) = @_;
my $config = $curproc->config();
my $log_file = $config->{ log_file };
if (-f $log_file) {
my $style = $curproc->get_print_style();
$self->_show_log($curproc, $log_file, { printing_style => $style });
}
}
# Descriptions: show cgi menu
# Arguments: OBJ($self) OBJ($curproc) HASH_REF($command_args)
# Side Effects: update $member_map $recipient_map
# Return Value: none
sub cgi_menu
{
my ($self, $curproc, $command_args) = @_;
my $config = $curproc->config();
my $log_file = $config->{ log_file };
if (-f $log_file) {
my $style = $curproc->get_print_style();
$self->_show_log($curproc, $log_file, { printing_style => $style });
}
}
# Descriptions: show log file.
# This function is same as "tail -30 log" by default.
# Arguments: OBJ($self) OBJ($curproc) STR($log_file) HASH_REF($sl_args)
# Side Effects: none
# Return Value: none
sub _show_log
{
my ($self, $curproc, $log_file, $sl_args) = @_;
my $is_cgi = 1 if $sl_args->{ printing_style } eq 'html';
my $line_count = 0;
my $line_max = 0;
my $charset = $curproc->get_charset($is_cgi ? "cgi" : "log_file");
# run "tail -30 log" by default.
my $config = $curproc->config();
my $last_n_lines = $config->{ log_command_tail_starting_location } || 30;
use Mail::Message::Encode;
my $encode = new Mail::Message::Encode;
use FileHandle;
my $fh = new FileHandle $log_file;
my $wh = \*STDOUT;
if (defined $fh) {
while (<$fh>) { $line_max++;}
$fh->close();
$fh = new FileHandle $log_file;
my $s = '';
$line_max -= $last_n_lines;
if ($is_cgi) { print $wh "<pre>\n";}
# show the last $last_n_lines lines by default.
my $buf;
LINE:
while ($buf = <$fh>) {
next LINE if $line_count++ < $line_max;
$s = $encode->convert( $buf, $charset );
if ($is_cgi) {
print $wh (_html_to_text($s));
print $wh "\n";
}
else {
print $wh $s;
}
}
$fh->close;
if ($is_cgi) { print $wh "</pre>\n";}
}
}
# Descriptions: convert text to html.
# Arguments: STR($str)
# Side Effects: none
# Return Value: STR
sub _html_to_text
{
my ($str) = @_;
eval q{
use HTML::FromText;
};
unless ($@) {
return text2html($str, urls => 1, pre => 0);
}
else {
croak($@);
}
}
=head1 CODING STYLE
See C<http://www.fml.org/software/FNF/> on fml coding style guide.
=head1 AUTHOR
Ken'ichi Fukamachi
=head1 COPYRIGHT
Copyright (C) 2002,2003,2004 Ken'ichi Fukamachi
All rights reserved. This program is free software; you can
redistribute it and/or modify it under the same terms as Perl itself.
=head1 HISTORY
FML::Command::Admin::log first appeared in fml8 mailing list driver package.
See C<http://www.fml.org/> for more details.
=cut
1;
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