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git://scm.dxcluster.org/scm/spider
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406 lines
8.3 KiB
Perl
406 lines
8.3 KiB
Perl
#
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# various utilities which are exported globally
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#
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# Copyright (c) 1998 - Dirk Koopman G1TLH
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#
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# $Id$
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#
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package DXUtil;
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use Date::Parse;
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use IO::File;
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use File::Copy;
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use Data::Dumper;
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use strict;
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use vars qw($VERSION $BRANCH);
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$VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
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$BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/ || (0,0));
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$main::build += $VERSION;
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$main::branch += $BRANCH;
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use vars qw(@month %patmap @ISA @EXPORT);
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require Exporter;
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@ISA = qw(Exporter);
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@EXPORT = qw(atime ztime cldate cldatetime slat slong yesno promptf
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parray parraypairs phex shellregex readfilestr writefilestr
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filecopy
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print_all_fields cltounix unpad is_callsign is_latlong
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is_qra is_freq is_digits is_pctext is_pcflag insertitem deleteitem
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);
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@month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
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%patmap = (
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'*' => '.*',
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'?' => '.',
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'[' => '[',
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']' => ']'
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);
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# a full time for logging and other purposes
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sub atime
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{
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my $t = shift;
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my ($sec,$min,$hour,$mday,$mon,$year) = gmtime((defined $t) ? $t : time);
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$year += 1900;
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my $buf = sprintf "%02d%s%04d\@%02d:%02d:%02d", $mday, $month[$mon], $year, $hour, $min, $sec;
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return $buf;
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}
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# get a zulu time in cluster format (2300Z)
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sub ztime
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{
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my $t = shift;
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$t = defined $t ? $t : time;
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my $dst = shift;
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my ($sec,$min,$hour) = $dst ? localtime($t): gmtime($t);
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my $buf = sprintf "%02d%02d%s", $hour, $min, ($dst) ? '' : 'Z';
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return $buf;
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}
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# get a cluster format date (23-Jun-1998)
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sub cldate
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{
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my $t = shift;
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$t = defined $t ? $t : time;
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my $dst = shift;
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my ($sec,$min,$hour,$mday,$mon,$year) = $dst ? localtime($t) : gmtime($t);
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$year += 1900;
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my $buf = sprintf "%2d-%s-%04d", $mday, $month[$mon], $year;
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return $buf;
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}
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# return a cluster style date time
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sub cldatetime
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{
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my $t = shift;
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my $dst = shift;
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my $date = cldate($t, $dst);
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my $time = ztime($t, $dst);
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return "$date $time";
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}
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# return a unix date from a cluster date and time
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sub cltounix
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{
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my $date = shift;
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my $time = shift;
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my ($thisyear) = (gmtime)[5] + 1900;
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return 0 unless $date =~ /^\s*(\d+)-(\w\w\w)-([12][90]\d\d)$/;
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return 0 if $3 > 2036;
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return 0 unless abs($thisyear-$3) <= 1;
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$date = "$1 $2 $3";
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return 0 unless $time =~ /^([012]\d)([012345]\d)Z$/;
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$time = "$1:$2 +0000";
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my $r = str2time("$date $time");
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return $r unless $r;
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return $r == -1 ? undef : $r;
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}
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# turn a latitude in degrees into a string
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sub slat
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{
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my $n = shift;
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my ($deg, $min, $let);
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$let = $n >= 0 ? 'N' : 'S';
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$n = abs $n;
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$deg = int $n;
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$min = int ((($n - $deg) * 60) + 0.5);
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return "$deg $min $let";
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}
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# turn a longitude in degrees into a string
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sub slong
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{
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my $n = shift;
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my ($deg, $min, $let);
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$let = $n >= 0 ? 'E' : 'W';
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$n = abs $n;
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$deg = int $n;
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$min = int ((($n - $deg) * 60) + 0.5);
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return "$deg $min $let";
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}
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# turn a true into 'yes' and false into 'no'
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sub yesno
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{
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my $n = shift;
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return $n ? $main::yes : $main::no;
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}
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# format a prompt with its current value and return it with its privilege
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sub promptf
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{
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my ($line, $value) = @_;
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my ($priv, $prompt, $action) = split ',', $line;
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# if there is an action treat it as a subroutine and replace $value
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if ($action) {
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my $q = qq{\$value = $action(\$value)};
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eval $q;
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} elsif (ref $value) {
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my $dd = new Data::Dumper([$value]);
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$dd->Indent(0);
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$dd->Terse(1);
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$dd->Quotekeys(0);
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$value = $dd->Dumpxs;
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$value =~ s/([\r\n\t])/sprintf("%%%02X", ord($1))/eg;
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}
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$prompt = sprintf "%15s: %s", $prompt, $value;
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return ($priv, $prompt);
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}
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# turn a hex field into printed hex
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sub phex
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{
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my $val = shift;
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return sprintf '%X', $val;
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}
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# take an arg as an array list and print it
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sub parray
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{
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my $ref = shift;
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return ref $ref ? join(', ', @{$ref}) : $ref;
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}
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# take the arg as an array reference and print as a list of pairs
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sub parraypairs
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{
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my $ref = shift;
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my $i;
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my $out;
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for ($i = 0; $i < @$ref; $i += 2) {
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my $r1 = @$ref[$i];
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my $r2 = @$ref[$i+1];
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$out .= "$r1-$r2, ";
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}
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chop $out; # remove last space
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chop $out; # remove last comma
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return $out;
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}
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sub _sort_fields
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{
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my $ref = shift;
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my @a = split /,/, $ref->field_prompt(shift);
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my @b = split /,/, $ref->field_prompt(shift);
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return lc $a[1] cmp lc $b[1];
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}
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# print all the fields for a record according to privilege
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#
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# The prompt record is of the format '<priv>,<prompt>[,<action>'
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# and is expanded by promptf above
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#
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sub print_all_fields
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{
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my $self = shift; # is a dxchan
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my $ref = shift; # is a thingy with field_prompt and fields methods defined
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my @out;
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my @fields = $ref->fields;
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my $field;
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my $width = $self->width - 1;
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$width ||= 80;
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foreach $field (sort {_sort_fields($ref, $a, $b)} @fields) {
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if (defined $ref->{$field}) {
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my ($priv, $ans) = promptf($ref->field_prompt($field), $ref->{$field});
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my @tmp;
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if (length $ans > $width) {
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my ($p, $a) = split /: /, $ans, 2;
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my $l = (length $p) + 2;
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my $al = ($width - 1) - $l;
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my $bit;
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while (length $a > $al ) {
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($bit, $a) = unpack "A$al A*", $a;
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push @tmp, "$p: $bit";
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$p = ' ' x ($l - 2);
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}
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push @tmp, "$p: $a" if length $a;
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} else {
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push @tmp, $ans;
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}
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push @out, @tmp if ($self->priv >= $priv);
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}
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}
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return @out;
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}
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# generate a regex from a shell type expression
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# see 'perl cookbook' 6.9
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sub shellregex
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{
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my $in = shift;
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$in =~ s{(.)} { $patmap{$1} || "\Q$1" }ge;
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return '^' . $in . "\$";
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}
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# read in a file into a string and return it.
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# the filename can be split into a dir and file and the
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# file can be in upper or lower case.
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# there can also be a suffix
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sub readfilestr
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{
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my ($dir, $file, $suffix) = @_;
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my $fn;
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my $f;
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if ($suffix) {
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$f = uc $file;
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$fn = "$dir/$f.$suffix";
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unless (-e $fn) {
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$f = lc $file;
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$fn = "$dir/$file.$suffix";
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}
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} elsif ($file) {
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$f = uc $file;
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$fn = "$dir/$file";
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unless (-e $fn) {
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$f = lc $file;
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$fn = "$dir/$file";
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}
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} else {
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$fn = $dir;
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}
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my $fh = new IO::File $fn;
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my $s = undef;
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if ($fh) {
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local $/ = undef;
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$s = <$fh>;
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$fh->close;
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}
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return $s;
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}
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# write out a file in the format required for reading
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# in via readfilestr, it expects the same arguments
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# and a reference to an object
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sub writefilestr
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{
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my $dir = shift;
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my $file = shift;
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my $suffix = shift;
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my $obj = shift;
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my $fn;
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my $f;
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confess('no object to write in writefilestr') unless $obj;
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confess('object not a reference in writefilestr') unless ref $obj;
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if ($suffix) {
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$f = uc $file;
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$fn = "$dir/$f.$suffix";
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unless (-e $fn) {
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$f = lc $file;
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$fn = "$dir/$file.$suffix";
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}
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} elsif ($file) {
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$f = uc $file;
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$fn = "$dir/$file";
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unless (-e $fn) {
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$f = lc $file;
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$fn = "$dir/$file";
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}
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} else {
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$fn = $dir;
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}
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my $fh = new IO::File ">$fn";
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if ($fh) {
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my $dd = new Data::Dumper([ $obj ]);
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$dd->Indent(1);
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$dd->Terse(1);
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$dd->Quotekeys(0);
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# $fh->print(@_) if @_ > 0; # any header comments, lines etc
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$fh->print($dd->Dumpxs);
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$fh->close;
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}
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}
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sub filecopy
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{
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copy(@_) or return $!;
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}
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# remove leading and trailing spaces from an input string
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sub unpad
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{
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my $s = shift;
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$s =~ s/\s+$//;
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$s =~ s/^\s+//;
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return $s;
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}
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# check that a field only has callsign characters in it
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sub is_callsign
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{
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return $_[0] =~ /^(?:[A-Z]{1,2}\d+|\d[A-Z]{1,2}\d+)[A-Z]{1,3}(?:-\d{1,2}|\/(?:[A-Z]{1,2}\d{0,2}|\d[A-Z]\d{0,2}))?$/;
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}
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# check that a PC protocol field is valid text
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sub is_pctext
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{
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return undef unless length $_[0];
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return undef if $_[0] =~ /[\x00-\x08\x0a-\x1f\x80-\x9f]/;
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return 1;
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}
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# check that a PC prot flag is fairly valid (doesn't check the difference between 1/0 and */-)
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sub is_pcflag
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{
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return $_[0] =~ /^[01\*\-]+$/;
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}
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# check that a thing is a frequency
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sub is_freq
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{
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return $_[0] =~ /^\d+(?:\.\d+)?$/;
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}
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# check that a thing is just digits
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sub is_digits
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{
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return $_[0] =~ /^[\d]+$/;
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}
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# does it look like a qra locator?
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sub is_qra
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{
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return $_[0] =~ /^[A-Ra-r][A-Ra-r]\d\d[A-Xa-x][A-Xa-x]$/;
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}
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# does it look like a valid lat/long
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sub is_latlong
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{
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return $_[0] =~ /^\s*\d{1,2}\s+\d{1,2}\s*[NnSs]\s+1?\d{1,2}\s+\d{1,2}\s*[EeWw]\s*$/;
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}
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# insert an item into a list if it isn't already there returns 1 if there 0 if not
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sub insertitem
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{
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my $list = shift;
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my $item = shift;
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return 1 if grep {$_ eq $item } @$list;
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push @$list, $item;
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return 0;
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}
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# delete an item from a list if it is there returns no deleted
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sub deleteitem
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{
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my $list = shift;
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my $item = shift;
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my $n = @$list;
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@$list = grep {$_ ne $item } @$list;
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return $n - @$list;
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}
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