@ISA = qw(Exporter);
@EXPORT = qw(atime ztime cldate cldatetime slat slong yesno promptf
parray parraypairs shellregex readfilestr writefilestr
- print_all_fields cltounix iscallsign unpad
+ print_all_fields cltounix iscallsign unpad is_callsign
+ is_freq is_digits is_pctext is_pcflag insertitem deleteitem
);
@month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
sub unpad
{
my $s = shift;
- $s =~ s/^\s+|\s+$//;
+ $s =~ s/\s+$//;
+ $s =~ s/^\s+//;
return $s;
}
+# check that a field only has callsign characters in it
+sub is_callsign
+{
+ return $_[0] =~ /^[A-Z0-9\-]+$/;
+}
+
+# check that a PC protocol field is valid text
+sub is_pctext
+{
+ return $_[0] =~ /^[\x09\x20-\xFF]+$/;
+}
+# check that a PC prot flag is fairly valid (doesn't check the difference between 1/0 and */-)
+sub is_pcflag
+{
+ return $_[0] =~ /^[01\*\-]+$/;
+}
+
+# check that a thing is a frequency
+sub is_freq
+{
+ return $_[0] =~ /^[\d\.]+$/;
+}
+# check that a thing is just digits
+sub is_digits
+{
+ return $_[0] =~ /^[\d]+$/;
+}
+# insert an item into a list if it isn't already there returns 1 if there 0 if not
+sub insertitem
+{
+ my $list = shift;
+ my $item = shift;
+
+ return 1 if grep {$_ eq $item } @$list;
+ push @$list, $item;
+ return 0;
+}
+# delete an item from a list if it is there returns no deleted
+sub deleteitem
+{
+ my $list = shift;
+ my $item = shift;
+ my $n = @$list;
+
+ @$list = grep {$_ ne $item } @$list;
+ return $n - @$list;
+}