X-Git-Url: https://code.th-h.de/?p=usenet%2Fnewsstats.git;a=blobdiff_plain;f=NewsStats.pm;h=bdfdcf5ab6762d5df383ae9647bef19d117b55d3;hp=a04ac0f02397e26d9b66d2721b4e4d7fc899a533;hb=7773fb6d8f26f2d2331a4bb394ed164160a9a210;hpb=edd250f2652311094fff5ef352702af44f3a8a1b

diff --git a/NewsStats.pm b/NewsStats.pm
index a04ac0f..bdfdcf5 100644
--- a/NewsStats.pm
+++ b/NewsStats.pm
@@ -343,13 +343,13 @@ sub SplitPeriod {
 sub ListMonth {
 ################################################################################
 ### return a list of months (YYYY-MM) between start and end month
-### IN : $StartMonth, $EndMonth
-### OUT: @Months: array containing all months from $StartMonth to $EndMonth
-  my ($StartMonth, $EndMonth) = @_;
-  return (undef,undef)
-    if ($StartMonth !~ /^\d{4}-\d{2}$/ or $EndMonth !~ /^\d{4}-\d{2}$/);
-  # return if $StartMonth = $EndMonth
-  return ($StartMonth) if ($StartMonth eq $EndMonth);
+### IN : $MonthExpression ('YYYY-MM' or 'YYYY-MM to YYYY-MM')
+### OUT: @Months: array containing all months from $MonthExpression enumerated
+  my ($MonthExpression )= @_;
+  # return if single month
+  return ($MonthExpression) if ($MonthExpression =~ /^\d{4}-\d{2}$/);
+  # parse $MonthExpression
+  my ($StartMonth, $EndMonth) = split(' to ',$MonthExpression);
   # set $Year, $Month from $StartMonth
   my ($Year, $Month) = split /-/, $StartMonth;
   # define @Months