From f84f1d2ad2ed7b19c8eeb969c994af27046f9298 Mon Sep 17 00:00:00 2001
From: Neil Drumm <drumm@3064.no-reply.drupal.org>
Date: Tue, 28 Nov 2006 03:32:03 +0000
Subject: #99644 by neclimdul. Move a function to be more accessible by modules
 updating.

---
 includes/install.inc | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

(limited to 'includes')

diff --git a/includes/install.inc b/includes/install.inc
index d19a5eceb..fedd99265 100644
--- a/includes/install.inc
+++ b/includes/install.inc
@@ -599,6 +599,60 @@ function st($string, $args = array()) {
   return strtr((!empty($locale_strings[$string]) ? $locale_strings[$string] : $string), $args);
 }
 
+/**
+ * Converts a set of tables to UTF-8 encoding.
+ *
+ * This update is designed to be re-usable by contrib modules and is
+ * used by system_update_169().
+ */
+function _system_update_utf8($tables) {
+  // Are we starting this update for the first time?
+  if (!isset($_SESSION['update_utf8'])) {
+    switch ($GLOBALS['db_type']) {
+      // Only for MySQL 4.1+
+      case 'mysqli':
+        break;
+      case 'mysql':
+        if (version_compare(mysql_get_server_info($GLOBALS['active_db']), '4.1.0', '<')) {
+          return array();
+        }
+        break;
+      case 'pgsql':
+        return array();
+    }
+
+    // See if database uses UTF-8 already
+    global $db_url;
+    $url = parse_url(is_array($db_url) ? $db_url['default'] : $db_url);
+    $db_name = substr($url['path'], 1);
+    $result = db_fetch_array(db_query('SHOW CREATE DATABASE `%s`', $db_name));
+    if (preg_match('/utf8/i', array_pop($result))) {
+      return array();
+    }
+
+    // Make list of tables to convert
+    $_SESSION['update_utf8'] = $tables;
+    // Keep track of total for progress bar
+    $_SESSION['update_utf8_total'] = count($tables);
+  }
+
+  // Fetch remaining tables list and convert next table
+  $list = &$_SESSION['update_utf8'];
+
+  $ret = update_convert_table_utf8(array_shift($list));
+
+  // Are we done?
+  if (count($list) == 0) {
+    unset($_SESSION['update_utf8']);
+    unset($_SESSION['update_utf8_total']);
+    return $ret;
+  }
+
+  // Progress percentage
+  $ret['#finished'] = 1 - (count($list) / $_SESSION['update_utf8_total']);
+  return $ret;
+}
+
 /**
  * Check a profile's requirements.
  *
-- 
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