A function for normalizing numeric strings

git-svn-id: svn://svn.open-ils.org/ILS/trunk@19491 dcc99617-32d9-48b4-a31d-7c20da2025e4

diff --git a/Open-ILS/src/sql/Pg/002.functions.config.sql b/Open-ILS/src/sql/Pg/002.functions.config.sql
index ec2dbf2..a68300f 100644 (file)
--- a/Open-ILS/src/sql/Pg/002.functions.config.sql
+++ b/Open-ILS/src/sql/Pg/002.functions.config.sql
@@ -605,5 +605,20 @@ CREATE OR REPLACE FUNCTION oils_text_as_bytea (TEXT) RETURNS BYTEA AS $_$
     SELECT CAST(REGEXP_REPLACE(UPPER($1), $$\\$$, $$\\\\$$, 'g') AS BYTEA);
 $_$ LANGUAGE SQL IMMUTABLE;
 
+CREATE OR REPLACE FUNCTION lpad_number_substrings( TEXT, TEXT, INT ) RETURNS TEXT AS $$
+    my $string = shift;
+    my $pad = shift;
+    my $len = shift;
+    my $find = $len - 1;
+
+    while ($string =~ /(?:^|\D)(\d{1,$find})(?:$|\D)/) {
+        my $padded = $1;
+        $padded = $pad x ($len - length($padded)) . $padded
+        $string =~ s/$1/$padded/sg;
+    }
+
+    return $string;
+$$ LANUGAGE PLPERLU;
+
 COMMIT;