X-Git-Url: https://code.th-h.de/?p=usenet%2Fnewsstats.git;a=blobdiff_plain;f=NewsStats.pm;h=12334cd0886896adc7ca7d7575e005ca4cbbeac6;hp=428719ec4c07e21e8d87cd97e279ac9d1fe3558a;hb=7c83a673e654c823fe04d7731fd02f9bc5787703;hpb=7662b1065e85874ceee234701d93aa50a1cde408

diff --git a/NewsStats.pm b/NewsStats.pm
index 428719e..12334cd 100644
--- a/NewsStats.pm
+++ b/NewsStats.pm
@@ -33,6 +33,7 @@ require Exporter;
   SplitPeriod
   ListMonth
   ListNewsgroups
+  ParseHierarchies
   ReadGroupList
   OutputData
   FormatOutput
@@ -573,16 +574,49 @@ sub SQLGroupList {
   my ($Newsgroups) = @_;
   # substitute '*' wildcard with SQL wildcard character '%'
   $Newsgroups =~ s/\*/%/g;
+  return (undef,undef) if !CheckValidNewsgroups($Newsgroups);
   # just one newsgroup?
   return (SQLGroupWildcard($Newsgroups),$Newsgroups) if $Newsgroups !~ /:/;
+  my ($SQL,@WildcardGroups,@NoWildcardGroups);
   # list of newsgroups separated by ':'
-  my $SQL = '(';
   my @GroupList = split /:/, $Newsgroups;
   foreach (@GroupList) {
-     $SQL .= ' OR ' if $SQL gt '(';
-     $SQL .= SQLGroupWildcard($_);
+    if ($_ !~ /%/) {
+      # add to list of newsgroup names WITHOUT wildcard
+      push (@NoWildcardGroups,$_);
+    } else {
+      # add to list of newsgroup names WITH wildcard
+      push (@WildcardGroups,$_);
+      # add wildcard to SQL clause
+      # 'OR' if SQL clause is not empty
+      $SQL .= ' OR ' if $SQL;
+      $SQL .= 'newsgroup LIKE ?'
+    }
   };
-  $SQL .= ')';
+  if (scalar(@NoWildcardGroups)) {
+    # add 'OR' if SQL clause is not empty
+    $SQL .= ' OR ' if $SQL;
+    if (scalar(@NoWildcardGroups) < 2) {
+      # special case: just one newsgroup without wildcard
+      $SQL .= 'newsgroup = ?';
+    } else {
+      # create list of newsgroups to include: 'newsgroup IN (...)'
+      $SQL .= 'newsgroup IN (';
+      my $SQLin;
+      foreach (@NoWildcardGroups) {
+        $SQLin .= ',' if $SQLin;
+        $SQLin .= '?';
+      }
+      # add list to SQL clause
+      $SQL .= $SQLin .= ')';
+    }
+  }
+  # add brackets '()' to SQL clause as needed (more than one wildcard group)
+  if (scalar(@WildcardGroups)) {
+    $SQL = '(' . $SQL .')';
+  }
+  # rebuild @GroupList in (now) correct order
+  @GroupList = (@WildcardGroups,@NoWildcardGroups);
   return ($SQL,@GroupList);
 };
 
@@ -594,7 +628,6 @@ sub SQLGroupWildcard {
 ###                  (group.name or group.name.%)
 ### OUT: SQL code to become part of a 'WHERE' clause
   my ($Newsgroup) = @_;
-  # FIXME: check for validity
   if ($Newsgroup !~ /%/) {
     return 'newsgroup = ?';
   } else {
@@ -697,6 +730,19 @@ sub SQLBuildClause {
   return $SQLClause;
 };
 
+#####--------------------------- Verifications ----------------------------#####
+
+################################################################################
+sub CheckValidNewsgroups {
+################################################################################
+### syntax check of newgroup list
+### IN : $Newsgroups: list of newsgroups (group.one.*:group.two:group.three.*)
+### OUT: boolean
+  my ($Newsgroups) = @_;
+  my $InvalidCharRegExp = ',; ';
+  return ($Newsgroups =~ /[$InvalidCharRegExp]/) ? 0 : 1;
+};
+
 
 #####------------------------------- done ---------------------------------#####
 1;