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1fcf0ca8a5
dirname() is a slow function compared with __DIR__ and using '/../'. Moodle has a large number of legacy files that are included each time a page loads and is not able to use an autoloader as it is functional code. This allows those required includes to perform as best as possible in this situation.
212 lines
7.3 KiB
PHP
212 lines
7.3 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* MySQL collation conversion tool.
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*
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* @package core
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* @copyright 2012 Petr Skoda (http://skodak.org)
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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define('CLI_SCRIPT', true);
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require(__DIR__.'/../../config.php');
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require_once($CFG->libdir.'/clilib.php'); // cli only functions
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if ($DB->get_dbfamily() !== 'mysql') {
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cli_error('This function is designed for MySQL databases only!');
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}
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// now get cli options
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list($options, $unrecognized) = cli_get_params(array('help'=>false, 'list'=>false, 'collation'=>false, 'available'=>false),
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array('h'=>'help', 'l'=>'list', 'a'=>'available'));
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if ($unrecognized) {
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$unrecognized = implode("\n ", $unrecognized);
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cli_error(get_string('cliunknowoption', 'admin', $unrecognized));
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}
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$help =
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"MySQL collation conversions script.
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It is strongly recommended to stop the web server before the conversion.
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This script may be executed before the main upgrade - 1.9.x data for example.
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Options:
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--collation=COLLATION Convert MySQL tables to different collation
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-l, --list Show table and column information
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-a, --available Show list of available collations
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-h, --help Print out this help
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Example:
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\$ sudo -u www-data /usr/bin/php admin/cli/mysql_collation.php --collation=utf8_general_ci
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";
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if (!empty($options['collation'])) {
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$collations = mysql_get_collations();
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$collation = clean_param($options['collation'], PARAM_ALPHANUMEXT);
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$collation = strtolower($collation);
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if (!isset($collations[$collation])) {
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cli_error("Error: collation '$collation' is not available on this server!");
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}
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echo "Converting tables and columns to '$collation' for $CFG->wwwroot:\n";
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$prefix = $DB->get_prefix();
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$prefix = str_replace('_', '\\_', $prefix);
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$sql = "SHOW TABLE STATUS WHERE Name LIKE BINARY '$prefix%'";
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$rs = $DB->get_recordset_sql($sql);
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$converted = 0;
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$skipped = 0;
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$errors = 0;
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foreach ($rs as $table) {
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echo str_pad($table->name, 40). " - ";
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if ($table->collation === $collation) {
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echo "NO CHANGE\n";
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$skipped++;
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} else {
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$DB->change_database_structure("ALTER TABLE $table->name DEFAULT COLLATE = $collation");
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echo "CONVERTED\n";
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$converted++;
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}
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$sql = "SHOW FULL COLUMNS FROM $table->name WHERE collation IS NOT NULL";
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$rs2 = $DB->get_recordset_sql($sql);
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foreach ($rs2 as $column) {
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$column = (object)array_change_key_case((array)$column, CASE_LOWER);
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echo ' '.str_pad($column->field, 36). " - ";
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if ($column->collation === $collation) {
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echo "NO CHANGE\n";
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$skipped++;
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continue;
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}
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if ($column->type === 'tinytext' or $column->type === 'mediumtext' or $column->type === 'text' or $column->type === 'longtext') {
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$notnull = ($column->null === 'NO') ? 'NOT NULL' : 'NULL';
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$default = (!is_null($column->default) and $column->default !== '') ? "DEFAULT '$column->default'" : '';
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// primary, unique and inc are not supported for texts
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$sql = "ALTER TABLE $table->name MODIFY COLUMN $column->field $column->type COLLATE $collation $notnull $default";
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$DB->change_database_structure($sql);
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} else if (strpos($column->type, 'varchar') === 0) {
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$notnull = ($column->null === 'NO') ? 'NOT NULL' : 'NULL';
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$default = !is_null($column->default) ? "DEFAULT '$column->default'" : '';
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// primary, unique and inc are not supported for texts
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$sql = "ALTER TABLE $table->name MODIFY COLUMN $column->field $column->type COLLATE $collation $notnull $default";
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$DB->change_database_structure($sql);
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} else {
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echo "ERROR (unknown column type: $column->type)\n";
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$error++;
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continue;
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}
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echo "CONVERTED\n";
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$converted++;
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}
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$rs2->close();
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}
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$rs->close();
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echo "Converted: $converted, skipped: $skipped, errors: $errors\n";
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exit(0); // success
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} else if (!empty($options['list'])) {
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echo "List of tables for $CFG->wwwroot:\n";
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$prefix = $DB->get_prefix();
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$prefix = str_replace('_', '\\_', $prefix);
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$sql = "SHOW TABLE STATUS WHERE Name LIKE BINARY '$prefix%'";
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$rs = $DB->get_recordset_sql($sql);
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$counts = array();
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foreach ($rs as $table) {
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if (isset($counts[$table->collation])) {
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$counts[$table->collation]++;
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} else {
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$counts[$table->collation] = 1;
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}
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echo str_pad($table->name, 40);
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echo $table->collation. "\n";
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$collations = mysql_get_column_collations($table->name);
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foreach ($collations as $columname=>$collation) {
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if (isset($counts[$collation])) {
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$counts[$collation]++;
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} else {
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$counts[$collation] = 1;
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}
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echo ' ';
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echo str_pad($columname, 36);
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echo $collation. "\n";
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}
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}
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$rs->close();
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echo "\n";
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echo "Table collations summary for $CFG->wwwroot:\n";
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foreach ($counts as $collation => $count) {
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echo "$collation: $count\n";
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}
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exit(0); // success
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} else if (!empty($options['available'])) {
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echo "List of available MySQL collations for $CFG->wwwroot:\n";
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$collations = mysql_get_collations();
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foreach ($collations as $collation) {
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echo " $collation\n";
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}
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die;
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} else {
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echo $help;
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die;
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}
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// ========== Some functions ==============
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function mysql_get_collations() {
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global $DB;
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$collations = array();
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$sql = "SHOW COLLATION WHERE Collation LIKE 'utf8\_%' AND Charset = 'utf8'";
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$rs = $DB->get_recordset_sql($sql);
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foreach ($rs as $collation) {
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$collations[$collation->collation] = $collation->collation;
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}
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$rs->close();
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$collation = $DB->get_dbcollation();
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if (isset($collations[$collation])) {
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$collations[$collation] .= ' (default)';
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}
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return $collations;
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}
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function mysql_get_column_collations($tablename) {
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global $DB;
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$collations = array();
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$sql = "SELECT column_name, collation_name
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FROM INFORMATION_SCHEMA.COLUMNS
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WHERE table_schema = DATABASE() AND table_name = ? AND collation_name IS NOT NULL";
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$rs = $DB->get_recordset_sql($sql, array($tablename));
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foreach($rs as $record) {
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$collations[$record->column_name] = $record->collation_name;
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}
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$rs->close();
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return $collations;
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}
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