2 # the general purpose logging machine
4 # This module is designed to allow you to log stuff in specific places
5 # and will rotate logs on a monthly, weekly or daily basis.
7 # The idea is that you give it a prefix which is a directory and then
8 # the system will log stuff to a directory structure which looks like:-
11 # spots/1998/<julian day no>[.<optional suffix>]
14 # log/1998/<week no>[.<optional suffix>]
17 # wwv/1998/<month>[.<optional suffix>]
19 # Routines are provided to read these files in and to append to them
21 # Copyright (c) - 1998 Dirk Koopman G1TLH
30 @EXPORT = qw(Log LogDbg Logclose);
41 use vars qw($log %logs);
43 $log = new('log', 'dat', 'm');
45 # create a log object that contains all the useful info needed
46 # prefix is the main directory off of the data directory
47 # sort is 'm' for monthly, 'd' for daily
50 my ($prefix, $suffix, $sort) = @_;
51 my $ref = bless {}, __PACKAGE__;
52 $ref->{prefix} = "$main::data/$prefix";
53 $ref->{suffix} = $suffix if $suffix;
56 # make sure the directory exists
57 mkdir($ref->{prefix}, 0777) unless -e $ref->{prefix};
65 my ($self, $jdate) = @_;
66 my $year = $jdate->year;
67 my $thing = $jdate->thing;
69 my $fn = sprintf "$self->{prefix}/$year/%02d", $thing if $jdate->isa('Julian::Month');
70 $fn = sprintf "$self->{prefix}/$year/%03d", $thing if $jdate->isa('Julian::Day');
71 $fn .= ".$self->{suffix}" if $self->{suffix};
75 # open the appropriate data file
78 my ($self, $jdate, $mode) = @_;
80 # if we are writing, check that the directory exists
82 my $year = $jdate->year;
83 my $dir = "$self->{prefix}/$year";
84 mkdir($dir, 0777) if ! -e $dir;
87 $self->{fn} = $self->_genfn($jdate);
89 $mode = 'r' if !$mode;
90 $self->{mode} = $mode;
91 $self->{jdate} = $jdate;
93 my $fh = new IO::File $self->{fn}, $mode, 0666;
95 $fh->autoflush(0); # autofluahing off
98 # print "opening $self->{fn}\n";
105 my ($self, $jdate) = @_;
106 my $fn = $self->_genfn($jdate);
112 my ($self, $jdate) = @_;
114 my $fn = $self->_genfn($jdate);
115 return (stat $fn)[9];
118 # open the previous log file in sequence
122 my $jdate = $self->{jdate}->sub(1);
123 return $self->open($jdate, @_);
126 # open the next log file in sequence
130 my $jdate = $self->{jdate}->add(1);
131 return $self->open($jdate, @_);
134 # convert a date into the correct format from a unix date depending on its sort
139 if ($self->{'sort'} eq 'm') {
140 return Julian::Month->new(shift);
141 } elsif ($self->{'sort'} eq 'd') {
142 return Julian::Day->new(shift);
144 confess "shouldn't get here";
147 # write (actually append) to a file, opening new files as required
150 my ($self, $jdate, $line) = @_;
152 $self->{mode} ne ">>" ||
153 $jdate->year != $self->{jdate}->year ||
154 $jdate->thing != $self->{jdate}->thing) {
155 $self->open($jdate, ">>") or confess "can't open $self->{fn} $!";
158 return $self->{fh}->print("$line\n");
161 # write (actually append) using the current date to a file, opening new files as required
164 my ($self, $line) = @_;
166 my $date = $self->unixtoj($t);
167 return $self->write($date, $line);
170 # write (actually append) using a unix time to a file, opening new files as required
173 my ($self, $t, $line) = @_;
174 my $date = $self->unixtoj($t);
175 return $self->write($date, $line);
178 # close the log file handle
182 undef $self->{fh}; # close the filehandle
190 undef $self->{fh}; # close the filehandle
191 delete $self->{fh} if $self->{fh};
196 foreach my $l (values %logs) {
197 $l->{fh}->flush if exists $l->{fh};
201 # log something in the system log
202 # this routine is exported to any module that declares DXLog
203 # it takes all its args and joins them together with the unixtime writes them out as one line
204 # The user is responsible for making sense of this!
208 $log->writeunix($t, join('^', $t, @_) );
213 DXDebug::dbg($_) for @_;