582 lines
No EOL
18 KiB
PHP
582 lines
No EOL
18 KiB
PHP
<?php
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/**
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* Simple Machines Forum (SMF)
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*
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* @package SMF
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* @author Simple Machines http://www.simplemachines.org
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* @copyright 2011 Simple Machines
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* @license http://www.simplemachines.org/about/smf/license.php BSD
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*
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* @version 2.0
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*/
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if (!defined('SMF'))
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die('Hacking attempt...');
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/* This file contains database functionality specifically designed for packages to utilize.
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bool smf_db_create_table(string table_name, array columns, array indexes = array(),
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array parameters = array(), string if_exists = 'ignore')
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- Can be used to create a table without worrying about schema compatabilities.
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- If the table exists will, by default, do nothing.
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- Builds table with columns as passed to it - at least one column must be sent.
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The columns array should have one sub-array for each column - these sub arrays contain:
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+ 'name' = Column name
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+ 'type' = Type of column - values from (smallint,mediumint,int,text,varchar,char,tinytext,mediumtext,largetext)
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+ 'size' => Size of column (If applicable) - for example 255 for a large varchar, 10 for an int etc. If not
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set SMF will pick a size.
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+ 'default' = Default value - do not set if no default required.
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+ 'null' => Can it be null (true or false) - if not set default will be false.
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+ 'auto' => Set to true to make it an auto incrementing column. Set to a numerical value to set
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from what it should begin counting.
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- Adds indexes as specified within indexes parameter. Each index should be a member of $indexes. Values are:
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+ 'name' => Index name (If left empty SMF will generate).
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+ 'type' => Type of index. Choose from 'primary', 'unique' or 'index'. If not set will default to 'index'.
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+ 'columns' => Array containing columns that form part of key - in the order the index is to be created.
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- parameters: (None yet)
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- if_exists values:
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+ 'ignore' will do nothing if the table exists. (And will return true)
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+ 'overwrite' will drop any existing table of the same name.
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+ 'error' will return false if the table already exists.
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*/
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// Add the file functions to the $smcFunc array.
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function db_packages_init()
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{
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global $smcFunc, $reservedTables, $db_package_log, $db_prefix;
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if (!isset($smcFunc['db_create_table']) || $smcFunc['db_create_table'] != 'smf_db_create_table')
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{
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$smcFunc += array(
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'db_add_column' => 'smf_db_add_column',
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'db_add_index' => 'smf_db_add_index',
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'db_calculate_type' => 'smf_db_calculate_type',
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'db_change_column' => 'smf_db_change_column',
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'db_create_table' => 'smf_db_create_table',
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'db_drop_table' => 'smf_db_drop_table',
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'db_table_structure' => 'smf_db_table_structure',
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'db_list_columns' => 'smf_db_list_columns',
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'db_list_indexes' => 'smf_db_list_indexes',
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'db_remove_column' => 'smf_db_remove_column',
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'db_remove_index' => 'smf_db_remove_index',
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);
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$db_package_log = array();
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}
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// We setup an array of SMF tables we can't do auto-remove on - in case a mod writer cocks it up!
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$reservedTables = array('admin_info_files', 'approval_queue', 'attachments', 'ban_groups', 'ban_items',
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'board_permissions', 'boards', 'calendar', 'calendar_holidays', 'categories', 'collapsed_categories',
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'custom_fields', 'group_moderators', 'log_actions', 'log_activity', 'log_banned', 'log_boards',
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'log_digest', 'log_errors', 'log_floodcontrol', 'log_group_requests', 'log_karma', 'log_mark_read',
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'log_notify', 'log_online', 'log_packages', 'log_polls', 'log_reported', 'log_reported_comments',
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'log_scheduled_tasks', 'log_search_messages', 'log_search_results', 'log_search_subjects',
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'log_search_topics', 'log_topics', 'mail_queue', 'membergroups', 'members', 'message_icons',
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'messages', 'moderators', 'package_servers', 'permission_profiles', 'permissions', 'personal_messages',
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'pm_recipients', 'poll_choices', 'polls', 'scheduled_tasks', 'sessions', 'settings', 'smileys',
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'themes', 'topics');
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foreach ($reservedTables as $k => $table_name)
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$reservedTables[$k] = strtolower($db_prefix . $table_name);
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// We in turn may need the extra stuff.
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db_extend('extra');
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}
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// Create a table.
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function smf_db_create_table($table_name, $columns, $indexes = array(), $parameters = array(), $if_exists = 'ignore', $error = 'fatal')
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{
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global $reservedTables, $smcFunc, $db_package_log, $db_prefix, $db_character_set;
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// Strip out the table name, we might not need it in some cases
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$real_prefix = preg_match('~^(`?)(.+?)\\1\\.(.*?)$~', $db_prefix, $match) === 1 ? $match[3] : $db_prefix;
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// With or without the database name, the fullname looks like this.
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$full_table_name = str_replace('{db_prefix}', $real_prefix, $table_name);
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$table_name = str_replace('{db_prefix}', $db_prefix, $table_name);
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// First - no way do we touch SMF tables.
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if (in_array(strtolower($table_name), $reservedTables))
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return false;
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// Log that we'll want to remove this on uninstall.
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$db_package_log[] = array('remove_table', $table_name);
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// Slightly easier on MySQL than the others...
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$tables = $smcFunc['db_list_tables']();
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if (in_array($full_table_name, $tables))
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{
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// This is a sad day... drop the table? If not, return false (error) by default.
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if ($if_exists == 'overwrite')
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$smcFunc['db_drop_table']($table_name);
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else
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return $if_exists == 'ignore';
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}
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// Righty - let's do the damn thing!
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$table_query = 'CREATE TABLE ' . $table_name . "\n" . '(';
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foreach ($columns as $column)
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{
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// Auto increment is easy here!
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if (!empty($column['auto']))
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{
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$default = 'auto_increment';
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}
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elseif (isset($column['default']) && $column['default'] !== null)
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$default = 'default \'' . $smcFunc['db_escape_string']($column['default']) . '\'';
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else
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$default = '';
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// Sort out the size... and stuff...
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$column['size'] = isset($column['size']) && is_numeric($column['size']) ? $column['size'] : null;
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list ($type, $size) = $smcFunc['db_calculate_type']($column['type'], $column['size']);
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// Allow unsigned integers (mysql only)
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$unsigned = in_array($type, array('int', 'tinyint', 'smallint', 'mediumint', 'bigint')) && !empty($column['unsigned']) ? 'unsigned ' : '';
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if ($size !== null)
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$type = $type . '(' . $size . ')';
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// Now just put it together!
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$table_query .= "\n\t`" .$column['name'] . '` ' . $type . ' ' . (!empty($unsigned) ? $unsigned : '') . (!empty($column['null']) ? '' : 'NOT NULL') . ' ' . $default . ',';
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}
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// Loop through the indexes next...
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foreach ($indexes as $index)
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{
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$columns = implode(',', $index['columns']);
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// Is it the primary?
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if (isset($index['type']) && $index['type'] == 'primary')
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$table_query .= "\n\t" . 'PRIMARY KEY (' . implode(',', $index['columns']) . '),';
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else
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{
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if (empty($index['name']))
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$index['name'] = implode('_', $index['columns']);
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$table_query .= "\n\t" . (isset($index['type']) && $index['type'] == 'unique' ? 'UNIQUE' : 'KEY') . ' ' . $index['name'] . ' (' . $columns . '),';
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}
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}
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// No trailing commas!
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if (substr($table_query, -1) == ',')
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$table_query = substr($table_query, 0, -1);
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$table_query .= ') ENGINE=MyISAM';
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if (!empty($db_character_set) && $db_character_set == 'utf8')
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$table_query .= ' DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci';
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// Create the table!
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$smcFunc['db_query']('', $table_query,
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array(
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'security_override' => true,
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)
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);
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}
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// Drop a table.
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function smf_db_drop_table($table_name, $parameters = array(), $error = 'fatal')
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{
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global $reservedTables, $smcFunc, $db_prefix;
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// After stripping away the database name, this is what's left.
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$real_prefix = preg_match('~^(`?)(.+?)\\1\\.(.*?)$~', $db_prefix, $match) === 1 ? $match[3] : $db_prefix;
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// Get some aliases.
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$full_table_name = str_replace('{db_prefix}', $real_prefix, $table_name);
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$table_name = str_replace('{db_prefix}', $db_prefix, $table_name);
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// God no - dropping one of these = bad.
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if (in_array(strtolower($table_name), $reservedTables))
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return false;
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// Does it exist?
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if (in_array($full_table_name, $smcFunc['db_list_tables']()))
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{
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$query = 'DROP TABLE ' . $table_name;
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$smcFunc['db_query']('',
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$query,
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array(
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'security_override' => true,
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)
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);
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return true;
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}
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// Otherwise do 'nout.
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return false;
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}
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// Add a column.
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function smf_db_add_column($table_name, $column_info, $parameters = array(), $if_exists = 'update', $error = 'fatal')
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{
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global $smcFunc, $db_package_log, $txt, $db_prefix;
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$table_name = str_replace('{db_prefix}', $db_prefix, $table_name);
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// Log that we will want to uninstall this!
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$db_package_log[] = array('remove_column', $table_name, $column_info['name']);
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// Does it exist - if so don't add it again!
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$columns = $smcFunc['db_list_columns']($table_name, false);
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foreach ($columns as $column)
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if ($column == $column_info['name'])
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{
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// If we're going to overwrite then use change column.
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if ($if_exists == 'update')
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return $smcFunc['db_change_column']($table_name, $column_info['name'], $column_info);
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else
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return false;
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}
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// Get the specifics...
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$column_info['size'] = isset($column_info['size']) && is_numeric($column_info['size']) ? $column_info['size'] : null;
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list ($type, $size) = $smcFunc['db_calculate_type']($column_info['type'], $column_info['size']);
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// Allow unsigned integers (mysql only)
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$unsigned = in_array($type, array('int', 'tinyint', 'smallint', 'mediumint', 'bigint')) && !empty($column_info['unsigned']) ? 'unsigned ' : '';
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if ($size !== null)
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$type = $type . '(' . $size . ')';
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// Now add the thing!
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$query = '
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ALTER TABLE ' . $table_name . '
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ADD `' . $column_info['name'] . '` ' . $type . ' ' . (!empty($unsigned) ? $unsigned : '') . (empty($column_info['null']) ? 'NOT NULL' : '') . ' ' .
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(!isset($column_info['default']) ? '' : 'default \'' . $smcFunc['db_escape_string']($column_info['default']) . '\'') . ' ' .
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(empty($column_info['auto']) ? '' : 'auto_increment primary key') . ' ';
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$smcFunc['db_query']('', $query,
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array(
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'security_override' => true,
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)
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);
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return true;
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}
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// Remove a column.
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function smf_db_remove_column($table_name, $column_name, $parameters = array(), $error = 'fatal')
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{
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global $smcFunc, $db_prefix;
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$table_name = str_replace('{db_prefix}', $db_prefix, $table_name);
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// Does it exist?
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$columns = $smcFunc['db_list_columns']($table_name, true);
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foreach ($columns as $column)
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if ($column['name'] == $column_name)
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{
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$smcFunc['db_query']('', '
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ALTER TABLE ' . $table_name . '
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DROP COLUMN ' . $column_name,
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array(
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'security_override' => true,
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)
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);
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return true;
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}
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// If here we didn't have to work - joy!
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return false;
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}
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// Change a column.
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function smf_db_change_column($table_name, $old_column, $column_info, $parameters = array(), $error = 'fatal')
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{
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global $smcFunc, $db_prefix;
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$table_name = str_replace('{db_prefix}', $db_prefix, $table_name);
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// Check it does exist!
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$columns = $smcFunc['db_list_columns']($table_name, true);
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$old_info = null;
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foreach ($columns as $column)
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if ($column['name'] == $old_column)
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$old_info = $column;
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// Nothing?
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if ($old_info == null)
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return false;
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// Get the right bits.
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if (!isset($column_info['name']))
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$column_info['name'] = $old_column;
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if (!isset($column_info['default']))
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$column_info['default'] = $old_info['default'];
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if (!isset($column_info['null']))
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$column_info['null'] = $old_info['null'];
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if (!isset($column_info['auto']))
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$column_info['auto'] = $old_info['auto'];
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if (!isset($column_info['type']))
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$column_info['type'] = $old_info['type'];
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if (!isset($column_info['size']) || !is_numeric($column_info['size']))
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$column_info['size'] = $old_info['size'];
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if (!isset($column_info['unsigned']) || !in_array($column_info['type'], array('int', 'tinyint', 'smallint', 'mediumint', 'bigint')))
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$column_info['unsigned'] = '';
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list ($type, $size) = $smcFunc['db_calculate_type']($column_info['type'], $column_info['size']);
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// Allow for unsigned integers (mysql only)
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$unsigned = in_array($type, array('int', 'tinyint', 'smallint', 'mediumint', 'bigint')) && !empty($column_info['unsigned']) ? 'unsigned ' : '';
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if ($size !== null)
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$type = $type . '(' . $size . ')';
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$smcFunc['db_query']('', '
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ALTER TABLE ' . $table_name . '
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CHANGE COLUMN `' . $old_column . '` `' . $column_info['name'] . '` ' . $type . ' ' . (!empty($unsigned) ? $unsigned : '') . (empty($column_info['null']) ? 'NOT NULL' : '') . ' ' .
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(!isset($column_info['default']) ? '' : 'default \'' . $smcFunc['db_escape_string']($column_info['default']) . '\'') . ' ' .
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(empty($column_info['auto']) ? '' : 'auto_increment') . ' ',
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array(
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'security_override' => true,
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)
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);
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}
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// Add an index.
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function smf_db_add_index($table_name, $index_info, $parameters = array(), $if_exists = 'update', $error = 'fatal')
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{
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global $smcFunc, $db_package_log, $db_prefix;
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$table_name = str_replace('{db_prefix}', $db_prefix, $table_name);
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// No columns = no index.
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if (empty($index_info['columns']))
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return false;
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$columns = implode(',', $index_info['columns']);
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// No name - make it up!
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if (empty($index_info['name']))
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{
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// No need for primary.
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if (isset($index_info['type']) && $index_info['type'] == 'primary')
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$index_info['name'] = '';
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else
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$index_info['name'] = implode('_', $index_info['columns']);
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}
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else
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$index_info['name'] = $index_info['name'];
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// Log that we are going to want to remove this!
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$db_package_log[] = array('remove_index', $table_name, $index_info['name']);
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// Let's get all our indexes.
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$indexes = $smcFunc['db_list_indexes']($table_name, true);
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// Do we already have it?
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foreach ($indexes as $index)
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{
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if ($index['name'] == $index_info['name'] || ($index['type'] == 'primary' && isset($index_info['type']) && $index_info['type'] == 'primary'))
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{
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// If we want to overwrite simply remove the current one then continue.
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if ($if_exists != 'update' || $index['type'] == 'primary')
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return false;
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else
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$smcFunc['db_remove_index']($table_name, $index_info['name']);
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}
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}
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// If we're here we know we don't have the index - so just add it.
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if (!empty($index_info['type']) && $index_info['type'] == 'primary')
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{
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$smcFunc['db_query']('', '
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ALTER TABLE ' . $table_name . '
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ADD PRIMARY KEY (' . $columns . ')',
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array(
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'security_override' => true,
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)
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);
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}
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else
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{
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$smcFunc['db_query']('', '
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ALTER TABLE ' . $table_name . '
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ADD ' . (isset($index_info['type']) && $index_info['type'] == 'unique' ? 'UNIQUE' : 'INDEX') . ' ' . $index_info['name'] . ' (' . $columns . ')',
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array(
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'security_override' => true,
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)
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);
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}
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}
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// Remove an index.
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function smf_db_remove_index($table_name, $index_name, $parameters = array(), $error = 'fatal')
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{
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global $smcFunc, $db_prefix;
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$table_name = str_replace('{db_prefix}', $db_prefix, $table_name);
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// Better exist!
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$indexes = $smcFunc['db_list_indexes']($table_name, true);
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foreach ($indexes as $index)
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{
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// If the name is primary we want the primary key!
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if ($index['type'] == 'primary' && $index_name == 'primary')
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{
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// Dropping primary key?
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$smcFunc['db_query']('', '
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ALTER TABLE ' . $table_name . '
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DROP PRIMARY KEY',
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array(
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'security_override' => true,
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)
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);
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return true;
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}
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if ($index['name'] == $index_name)
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{
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// Drop the bugger...
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$smcFunc['db_query']('', '
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ALTER TABLE ' . $table_name . '
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DROP INDEX ' . $index_name,
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array(
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'security_override' => true,
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)
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);
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return true;
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}
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}
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// Not to be found ;(
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return false;
|
|
}
|
|
|
|
// Get the schema formatted name for a type.
|
|
function smf_db_calculate_type($type_name, $type_size = null, $reverse = false)
|
|
{
|
|
// MySQL is actually the generic baseline.
|
|
return array($type_name, $type_size);
|
|
}
|
|
|
|
// Get table structure.
|
|
function smf_db_table_structure($table_name, $parameters = array())
|
|
{
|
|
global $smcFunc, $db_prefix;
|
|
|
|
$table_name = str_replace('{db_prefix}', $db_prefix, $table_name);
|
|
|
|
return array(
|
|
'name' => $table_name,
|
|
'columns' => $smcFunc['db_list_columns']($table_name, true),
|
|
'indexes' => $smcFunc['db_list_indexes']($table_name, true),
|
|
);
|
|
}
|
|
|
|
// Return column information for a table.
|
|
function smf_db_list_columns($table_name, $detail = false, $parameters = array())
|
|
{
|
|
global $smcFunc, $db_prefix;
|
|
|
|
$table_name = str_replace('{db_prefix}', $db_prefix, $table_name);
|
|
|
|
$result = $smcFunc['db_query']('', '
|
|
SHOW FIELDS
|
|
FROM {raw:table_name}',
|
|
array(
|
|
'table_name' => substr($table_name, 0, 1) == '`' ? $table_name : '`' . $table_name . '`',
|
|
)
|
|
);
|
|
$columns = array();
|
|
while ($row = $smcFunc['db_fetch_assoc']($result))
|
|
{
|
|
if (!$detail)
|
|
{
|
|
$columns[] = $row['Field'];
|
|
}
|
|
else
|
|
{
|
|
// Is there an auto_increment?
|
|
$auto = strpos($row['Extra'], 'auto_increment') !== false ? true : false;
|
|
|
|
// Can we split out the size?
|
|
if (preg_match('~(.+?)\s*\((\d+)\)(?:(?:\s*)?(unsigned))?~i', $row['Type'], $matches) === 1)
|
|
{
|
|
$type = $matches[1];
|
|
$size = $matches[2];
|
|
if (!empty($matches[3]) && $matches[3] == 'unsigned')
|
|
$unsigned = true;
|
|
}
|
|
else
|
|
{
|
|
$type = $row['Type'];
|
|
$size = null;
|
|
}
|
|
|
|
$columns[$row['Field']] = array(
|
|
'name' => $row['Field'],
|
|
'null' => $row['Null'] != 'YES' ? false : true,
|
|
'default' => isset($row['Default']) ? $row['Default'] : null,
|
|
'type' => $type,
|
|
'size' => $size,
|
|
'auto' => $auto,
|
|
);
|
|
|
|
if (isset($unsigned))
|
|
{
|
|
$columns[$row['Field']]['unsigned'] = $unsigned;
|
|
unset($unsigned);
|
|
}
|
|
}
|
|
}
|
|
$smcFunc['db_free_result']($result);
|
|
|
|
return $columns;
|
|
}
|
|
|
|
// What about some index information?
|
|
function smf_db_list_indexes($table_name, $detail = false, $parameters = array())
|
|
{
|
|
global $smcFunc, $db_prefix;
|
|
|
|
$table_name = str_replace('{db_prefix}', $db_prefix, $table_name);
|
|
|
|
$result = $smcFunc['db_query']('', '
|
|
SHOW KEYS
|
|
FROM {raw:table_name}',
|
|
array(
|
|
'table_name' => substr($table_name, 0, 1) == '`' ? $table_name : '`' . $table_name . '`',
|
|
)
|
|
);
|
|
$indexes = array();
|
|
while ($row = $smcFunc['db_fetch_assoc']($result))
|
|
{
|
|
if (!$detail)
|
|
$indexes[] = $row['Key_name'];
|
|
else
|
|
{
|
|
// What is the type?
|
|
if ($row['Key_name'] == 'PRIMARY')
|
|
$type = 'primary';
|
|
elseif (empty($row['Non_unique']))
|
|
$type = 'unique';
|
|
elseif (isset($row['Index_type']) && $row['Index_type'] == 'FULLTEXT')
|
|
$type = 'fulltext';
|
|
else
|
|
$type = 'index';
|
|
|
|
// This is the first column we've seen?
|
|
if (empty($indexes[$row['Key_name']]))
|
|
{
|
|
$indexes[$row['Key_name']] = array(
|
|
'name' => $row['Key_name'],
|
|
'type' => $type,
|
|
'columns' => array(),
|
|
);
|
|
}
|
|
|
|
// Is it a partial index?
|
|
if (!empty($row['Sub_part']))
|
|
$indexes[$row['Key_name']]['columns'][] = $row['Column_name'] . '(' . $row['Sub_part'] . ')';
|
|
else
|
|
$indexes[$row['Key_name']]['columns'][] = $row['Column_name'];
|
|
}
|
|
}
|
|
$smcFunc['db_free_result']($result);
|
|
|
|
return $indexes;
|
|
}
|
|
|
|
?>
|