i don't understand the following if statements. db_sort{column} is the field type so i know it's checking to see if the field is supposed to be a date. then &date_to_unix checks to see if it's a valid date. so i'm guessing if the $in value is supposed to be a date and is a valid date, then it skips the return and does the push, right? idon't understand the words 'and' and 'or'. if you can explain one statement, it will probably make them all clear!
if ($in{$column} =~ /^\>(.+)$/) { ($db_sort{$column} eq 'date') and (&date_to_unix($1) or return "Invalid date format: '$1'");
push (@search_gt_fields, $i); $in{"$column-gt"} = $1; $i++; next; }
if ($in{$column} =~ /^\<(.+)$/) { ($db_sort{$column} eq 'date') and (&date_to_unix($1) or return "Invalid date format: '$1'");
push (@search_lt_fields, $i); $in{"$column-lt"} = $1; $i++; next; }
if ($in{$column} !~ /^\s*$/) { ($db_sort{$column} eq 'date') and (&date_to_unix($in{$column}) or return "Invalid date format: '$in{$column}'");
push(@search_fields, $i); $i++; next; }
if ($in{"$column-gt"} !~ /^\s*$/) { ($db_sort{$column} eq 'date') and (&date_to_unix($in{"$column-gt"}) or return "Invalid date format: '$in{$column}'");
push(@search_gt_fields, $i); }
if ($in{"$column-lt"} !~ /^\s*$/) { ($db_sort{$column} eq 'date') and (&date_to_unix($in{"$column-lt"}) or return "Invalid date format: '$in{$column}'");
push(@search_lt_fields, $i); }
$i++;
}
Code:
foreach $column (@db_cols) { if ($in{$column} =~ /^\>(.+)$/) { ($db_sort{$column} eq 'date') and (&date_to_unix($1) or return "Invalid date format: '$1'");
push (@search_gt_fields, $i); $in{"$column-gt"} = $1; $i++; next; }
if ($in{$column} =~ /^\<(.+)$/) { ($db_sort{$column} eq 'date') and (&date_to_unix($1) or return "Invalid date format: '$1'");
push (@search_lt_fields, $i); $in{"$column-lt"} = $1; $i++; next; }
if ($in{$column} !~ /^\s*$/) { ($db_sort{$column} eq 'date') and (&date_to_unix($in{$column}) or return "Invalid date format: '$in{$column}'");
push(@search_fields, $i); $i++; next; }
if ($in{"$column-gt"} !~ /^\s*$/) { ($db_sort{$column} eq 'date') and (&date_to_unix($in{"$column-gt"}) or return "Invalid date format: '$in{$column}'");
push(@search_gt_fields, $i); }
if ($in{"$column-lt"} !~ /^\s*$/) { ($db_sort{$column} eq 'date') and (&date_to_unix($in{"$column-lt"}) or return "Invalid date format: '$in{$column}'");
push(@search_lt_fields, $i); }
$i++;
}