From d64514aab0d812a30524107a47f8f47dfbe7ce59 Mon Sep 17 00:00:00 2001
From: stronk7 <stronk7>
Date: Sun, 3 May 2009 17:19:40 +0000
Subject: [PATCH] MDL-14679 - PG get_indexes() fix - minor problem retrieving
 indexes with columns quoted

---
 lib/dml/pgsql_native_moodle_database.php | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/lib/dml/pgsql_native_moodle_database.php b/lib/dml/pgsql_native_moodle_database.php
index 6fc7a064bba..8a6895af73f 100644
--- a/lib/dml/pgsql_native_moodle_database.php
+++ b/lib/dml/pgsql_native_moodle_database.php
@@ -290,7 +290,7 @@ class pgsql_native_moodle_database extends moodle_database {
                     continue;
                 }
                 $columns = explode(',', $matches[4]);
-                $columns = array_map('trim', $columns);
+                $columns = array_map(array($this, 'trim_quotes'), $columns);
                 $indexes[$matches[2]] = array('unique'=>!empty($matches[1]),
                                               'columns'=>$columns);
             }
@@ -1155,4 +1155,16 @@ class pgsql_native_moodle_database extends moodle_database {
         pg_free_result($result);
         return true;
     }
+
+    /**
+     * Helper function trimming (whitespace + quotes) any string
+     * needed because PG uses to enclose with double quotes some
+     * fields in indexes definition and others
+     *
+     * @param string $str string to apply whitespace + quotes trim
+     * @return string trimmed string
+     */
+    private function trim_quotes($str) {
+        return trim(trim($str), "'\"");
+    }
 }