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[spider.git] / perl / DXUtil.pm

diff --git a/perl/DXUtil.pm b/perl/DXUtil.pm
index 07e3f4cb3bede190e80ae629259be3b8df7da646..7fae63170d015345b5372ab41c234d7d14a538fc 100644 (file)
--- a/perl/DXUtil.pm
+++ b/perl/DXUtil.pm
@@ -9,15 +9,24 @@
 package DXUtil;
 
 use Date::Parse;
+use IO::File;
+
 use Carp;
 
 require Exporter;
 @ISA = qw(Exporter);
-@EXPORT = qw(atime ztime cldate cldatetime slat slong yesno promptf parray parraypairs
-             print_all_fields cltounix 
+@EXPORT = qw(atime ztime cldate cldatetime slat slong yesno promptf 
+                        parray parraypairs shellregex readfilestr
+             print_all_fields cltounix iscallsign
             );
 
 @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
+%patmap = (
+                  '*' => '.*',
+                  '?' => '.',
+                  '[' => '[',
+                  ']' => ']'
+);
 
 # a full time for logging and other purposes
 sub atime
@@ -72,7 +81,9 @@ sub cltounix
        $date = "$1 $2 $3";
        return 0 unless $time =~ /^([012]\d)([012345]\d)Z$/;
        $time = "$1:$2 +0000";
-       return str2time("$date $time");
+       my $r = str2time("$date $time");
+       return $r unless $r;
+       return $r == -1 ? undef : $r;
 }
 
 # turn a latitude in degrees into a string
@@ -158,7 +169,7 @@ sub print_all_fields
        my @fields = $ref->fields;
        my $field;
 
-       foreach $field (sort @fields) {
+       foreach $field (sort {$ref->field_prompt($a) cmp $ref->field_prompt($b)} @fields) {
                if (defined $ref->{$field}) {
                        my ($priv, $ans) = promptf($ref->field_prompt($field), $ref->{$field});
                        push @out, $ans if ($self->priv >= $priv);
@@ -167,3 +178,54 @@ sub print_all_fields
        return @out;
 }
 
+# generate a regex from a shell type expression 
+# see 'perl cookbook' 6.9
+sub shellregex
+{
+       my $in = shift;
+       $in =~ s{(.)} { $patmap{$1} || "\Q$1" }ge;
+       return '^' . $in . "\$";
+}
+
+# start an attempt at determining whether this string might be a callsign
+sub iscallsign
+{
+       my $call = shift;
+       return 1 if $call =~ /^\w+\d+/;
+       return 1 if $call =~ /^\d+\w+/;
+       return undef;
+}
+
+# read in a file into a string and return it. 
+# the filename can be split into a dir and file and the 
+# file can be in upper or lower case.
+# there can also be a suffix
+sub readfilestr
+{
+       my ($dir, $file, $suffix) = @_;
+       my $fn;
+       
+       if ($suffix) {
+               $fn = "$dir/$file.$suffix";
+               unless (-e $fn) {
+                       my $f = uc $file;
+                       $fn = "$dir/$file.$suffix";
+               }
+       } elsif ($file) {
+               $fn = "$dir/$file";
+               unless (-e $fn) {
+                       my $f = uc $file;
+                       $fn = "$dir/$file";
+               }
+       } else {
+               $fn = $dir;
+       }
+       my $fh = new IO::File $fn;
+       my $s = undef;
+       if ($fh) {
+               local $/ = undef;
+               $s = <$fh>;
+               $fh->close;
+       }
+       return $s;
+}