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<?php |
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namespace Application\Model; |
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/** |
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* @TODO: maybe character set utf8 collate utf8_unicode_ci == collate utf8_unicode_ci |
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* @TODO: make it work even without ';' delimiters or at least warn about that |
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* @TODO: better parse error reporting |
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* @TODO: accept empty datetime value and 0000-00-00 00:00:00 are equal, similar with date and time, also enum('0','1') [default 0], what's with floats?(float(10,2) NOT NULL default '0.00'); text,mediumtext,etc; |
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* @TODO: option to add database name with dot before the table names |
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* @TODO: add option "order does matter" |
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* @DONE: skippen commas inside definitions like this one: FULLTEXT KEY `name` (`name`,`comment`,`placeName`) - inside brackets |
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* @DONE: breaks table definition on commas and brackets, not newlines |
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* @DONE: handles `database`.`table` in CREATE TABLE string (but does not add database to result sql for a while - and if it |
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* should? as same tables struct in 2 DBs compared is also a case) |
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* @DONE: handles double (and more) spaces in CREATE TABLE string |
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* @DONE: add filter option (fields: MODIFY, ADD, DROP, tables: CREATE, DROP) |
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* @DONE: make it work also with comments |
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* @DONE: move all options to $this->config |
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*/ |
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/** |
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* The class provides ability to compare 2 database structure dumps and compile a set of sql statements to update |
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* one database to make it structure identical to another. |
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* |
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* The input for the script could be taken from the phpMyAdmin structure dump, or provided by some custom code |
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* that uses 'SHOW CREATE TABLE' query to get database structure table by table. |
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* The output is either array of sql statements suitable for executions right from php or a string where the |
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* statements are placed each at new line and delimited with ';' - suitable for execution from phpMyAdmin SQL |
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* page. |
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* The resulting sql may contain queries that aim to: |
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* Create missing table (CREATE TABLE query) |
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* Delete table which should not longer exist (DROP TABLE query) |
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* Update, drop or add table field or index definition (ALTER TABLE query) |
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* |
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* Some features: |
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* - AUTO_INCREMENT value is ommited during the comparison and in resulting CREATE TABLE sql |
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* - fields with definitions like "(var)char (255) NOT NULL default ''" and "(var)char (255) NOT NULL" are treated |
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* as equal, the same for (big|tiny)int NOT NULL default 0; |
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* - IF NOT EXISTS is automatically added to the resulting sql CREATE TABLE statement |
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* - fields updating queries always come before key modification ones for each table |
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* Not implemented: |
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* - The class even does not try to insert or re-order fields in the same order as in the original table. |
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* Does order matter? |
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* IMPORTANT!!! Class will not handle a case when the field was renamed. It will generate 2 queries - one to drop |
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* the column with the old name and one to create column with the new name, so if there is a data in the dropped |
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* column, it will be lost. |
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* Usage example: |
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* $updater = new dbStructUpdater(); |
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* $res = $updater->getUpdates($struct1, $struct2); |
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* ----- |
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* $res == array ( |
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* [0]=>"ALTER TABLE `b` MODIFY `name` varchar(255) NOT NULL", |
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* ... |
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* ) |
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* |
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* @author Kirill Gerasimenko <[email protected]> |
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*/ |
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class DbStructUpdater |
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{ |
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var $sourceStruct = '';//structure dump of the reference database |
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var $destStruct = '';//structure dump of database to update |
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var $config = array();//updater configuration |
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/** |
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* Constructor |
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* |
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* @access public |
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*/ |
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public function __construct() |
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{ |
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$this->init(); |
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} |
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/** |
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* Constructor |
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* |
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* @access public |
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*/ |
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public function dbStructUpdater() |
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{ |
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$this->init(); |
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} |
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1 |
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function init() |
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{ |
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//table operations: create, drop; field operations: add, remove, modify |
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$this->config['updateTypes'] = 'create, drop, add, remove, modify'; |
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//ignores default part in cases like (var)char NOT NULL default '' upon the comparison |
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$this->config['varcharDefaultIgnore'] = true; |
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//the same for int NOT NULL default 0 |
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$this->config['intDefaultIgnore'] = true; |
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//ignores table autoincrement field value, also remove AUTO_INCREMENT value from the create query if exists |
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$this->config['ignoreIncrement'] = true; |
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//add 'IF NOT EXIST' to each CREATE TABLE query |
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$this->config['forceIfNotExists'] = true; |
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//remove 'IF NOT EXIST' if already exists CREATE TABLE dump |
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$this->config['ingoreIfNotExists'] = false; |
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} |
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/** |
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* merges current updater config with the given one |
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* |
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* @param assoc_array $config new configuration values |
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*/ |
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public function setConfig($config=array()) |
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{ |
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if (is_array($config)) { |
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$this->config = array_merge($this->config, $config); |
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} |
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} |
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/** |
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* Returns array of update SQL with default options, $source, $dest - database structures |
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* |
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* @access public |
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* @param string $source structure dump of database to update |
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* @param string $dest structure dump of the reference database |
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* @param bool $asString if true - result will be a string, otherwise - array |
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* @return array|string update sql statements - in array or string (separated with ';') |
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*/ |
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public function getUpdates($source, $dest, $asString=false) |
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{ |
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$result = $asString?'':array(); |
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$compRes = $this->compare($source, $dest); |
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if (empty($compRes)) { |
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return $result; |
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} |
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$compRes = $this->filterDiffs($compRes); |
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if (empty($compRes)) { |
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return $result; |
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} |
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$result = $this->getDiffSql($compRes); |
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if ($asString) { |
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$result = implode(";\r\n", $result); |
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} |
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return $result; |
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} |
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/** |
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* Filters comparison result and lefts only sync actions allowed by 'updateTypes' option |
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*/ |
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public function filterDiffs($compRes) |
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{ |
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$result = array(); |
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if (is_array($this->config['updateTypes'])) { |
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$updateActions = $this->config['updateTypes']; |
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} |
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else |
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{ |
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$updateActions = array_map('trim', explode(',', $this->config['updateTypes'])); |
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} |
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$allowedActions = array('create', 'drop', 'add', 'remove', 'modify'); |
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$updateActions = array_intersect($updateActions, $allowedActions); |
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foreach($compRes as $table=>$info) |
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{ |
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if ($info['sourceOrphan']) { |
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if (in_array('create', $updateActions)) { |
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$result[$table] = $info; |
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} |
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} |
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elseif ($info['destOrphan']) { |
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if (in_array('drop', $updateActions)) { |
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$result[$table] = $info; |
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} |
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} |
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elseif($info['differs']) { |
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$resultInfo = $info; |
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unset($resultInfo['differs']); |
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foreach ($info['differs'] as $diff) |
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{ |
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if (empty($diff['dest']) && in_array('add', $updateActions)) { |
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$resultInfo['differs'][] = $diff; |
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} |
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elseif (empty($diff['source']) && in_array('remove', $updateActions)) { |
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$resultInfo['differs'][] = $diff; |
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} |
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elseif(in_array('modify', $updateActions)) { |
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$resultInfo['differs'][] = $diff; |
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} |
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} |
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if (!empty($resultInfo['differs'])) { |
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$result[$table] = $resultInfo; |
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} |
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} |
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} |
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return $result; |
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} |
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/** |
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* Gets structured general info about the databases diff : |
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* array(sourceOrphans=>array(...), destOrphans=>array(...), different=>array(...)) |
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*/ |
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public function getDiffInfo($compRes) |
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{
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if (!is_array($compRes)) { |
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return false; |
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} |
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$result = array('sourceOrphans'=>array(), 'destOrphans'=>array(), 'different'=>array()); |
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foreach($compRes as $table=>$info) |
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{ |
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if ($info['sourceOrphan']) { |
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$result['sourceOrphans'][] = $table; |
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} |
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elseif ($info['destOrphan']) { |
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$result['destOrphans'][] = $table; |
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} |
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else |
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{ |
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$result['different'][] = $table; |
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} |
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} |
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return $result; |
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} |
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/** |
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* Makes comparison of the given database structures, support some options |
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* |
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* @access private |
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* @param string $source and $dest are strings - database tables structures |
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* @return array |
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* - table (array) |
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* - destOrphan (boolean) |
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* - sourceOrphan (boolean) |
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* - differs (array) OR (boolean) false if no diffs |
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* - [0](array) |
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* - source (string) structure definition line in the out-of-date table |
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* - dest (string) structure definition line in the reference table |
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* - [1](array) ... |
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*/ |
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private function compare($source, $dest) |
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{ |
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$this->sourceStruct = $source; |
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$this->destStruct = $dest; |
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$result = array(); |
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$destTabNames = $this->getTableList($this->destStruct); |
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$sourceTabNames = $this->getTableList($this->sourceStruct); |
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$common = array_intersect($destTabNames, $sourceTabNames); |
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$destOrphans = array_diff($destTabNames, $common); |
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$sourceOrphans = array_diff($sourceTabNames, $common); |
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$all = array_unique(array_merge($destTabNames, $sourceTabNames)); |
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sort($all); |
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foreach ($all as $tab) |
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{ |
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$info = array('destOrphan'=>false, 'sourceOrphan'=>false, 'differs'=>false); |
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if(in_array($tab, $destOrphans)) { |
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$info['destOrphan'] = true; |
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} |
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elseif (in_array($tab, $sourceOrphans)) { |
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$info['sourceOrphan'] = true; |
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} |
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else |
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{
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$destSql = $this->getTabSql($this->destStruct, $tab, true); |
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$sourceSql = $this->getTabSql($this->sourceStruct, $tab, true); |
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$diffs = $this->compareSql($sourceSql, $destSql);
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if ($diffs===false) { |
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trigger_error('[WARNING] error parsing definition of table "'.$tab.'" - skipped'); |
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continue; |
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} |
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elseif (!empty($diffs))//not empty array |
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{ |
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$info['differs'] = $diffs;
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}
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else { continue;//empty array |
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} |
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} |
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$result[$tab] = $info; |
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} |
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return $result; |
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} |
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/** |
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* Retrieves list of table names from the database structure dump |
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* |
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* @access private |
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* @param string $struct database structure listing |
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*/ |
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private function getTableList($struct) |
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{ |
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$result = array(); |
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if (preg_match_all('/CREATE(?:\s*TEMPORARY)?\s*TABLE\s*(?:IF NOT EXISTS\s*)?(?:`?(\w+)`?\.)?`?(\w+)`?/i', $struct, $m)) { |
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foreach($m[2] as $match)//m[1] is a database name if any |
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{ |
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$result[] = $match; |
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} |
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} |
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return $result; |
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} |
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/** |
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* Retrieves table structure definition from the database structure dump |
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* |
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* @access private |
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* @param string $struct database structure listing |
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* @param string $tab table name |
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* @param bool $removeDatabase - either to remove database name in "CREATE TABLE database.tab"-like declarations |
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* @return string table structure definition |
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*/ |
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private function getTabSql($struct, $tab, $removeDatabase=true) |
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{ |
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$result = ''; |
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/* create table should be single line in this case*/ |
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//1 - part before database, 2-database name, 3 - part after database |
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if (preg_match('/(CREATE(?:\s*TEMPORARY)?\s*TABLE\s*(?:IF NOT EXISTS\s*)?)(?:`?(\w+)`?\.)?(`?('.$tab.')`?(\W|$))/i', $struct, $m, PREG_OFFSET_CAPTURE)) { |
|
305
|
|
|
$tableDef = $m[0][0]; |
|
306
|
|
|
$start = $m[0][1]; |
|
307
|
|
|
$database = $m[2][0]; |
|
308
|
|
|
$offset = $start+strlen($m[0][0]); |
|
309
|
|
|
$end = $this->getDelimPos($struct, $offset); |
|
310
|
|
|
if ($end === false) { |
|
311
|
|
|
$result = substr($struct, $start); |
|
312
|
|
|
} |
|
313
|
|
|
else |
|
314
|
|
|
{ |
|
315
|
|
|
$result = substr($struct, $start, $end-$start);//already without ';' |
|
316
|
|
|
} |
|
317
|
|
|
} |
|
318
|
|
|
$result = trim($result); |
|
319
|
|
|
if ($database && $removeDatabase) { |
|
|
|
|
|
|
320
|
|
|
$result = str_replace($tableDef, $m[1][0].$m[3][0], $result); |
|
|
|
|
|
|
321
|
|
|
}
|
|
322
|
|
|
return $result; |
|
323
|
|
|
} |
|
324
|
|
|
|
|
325
|
|
|
/** |
|
326
|
|
|
* Splits table sql into indexed array |
|
327
|
|
|
*/ |
|
328
|
|
|
public function splitTabSql($sql) |
|
329
|
|
|
{ |
|
330
|
|
|
$result = array(); |
|
331
|
|
|
//find opening bracket, get the prefix along with it |
|
332
|
|
|
$openBracketPos = $this->getDelimPos($sql, 0, '('); |
|
333
|
|
|
if ($openBracketPos===false) { |
|
334
|
|
|
trigger_error('[WARNING] can not find opening bracket in table definition'); |
|
335
|
|
|
return false; |
|
336
|
|
|
} |
|
337
|
|
|
$prefix = substr($sql, 0, $openBracketPos+1);//prefix can not be empty, so do not check it, just trim |
|
338
|
|
|
$result[] = trim($prefix); |
|
339
|
|
|
$body = substr($sql, strlen($prefix));//fields, indexes and part after closing bracket |
|
340
|
|
|
//split by commas, get part by part |
|
341
|
|
|
while(($commaPos = $this->getDelimPos($body, 0, ',', true))!==false) |
|
342
|
|
|
{ |
|
343
|
|
|
$part = trim(substr($body, 0, $commaPos+1));//read another part and shorten $body |
|
344
|
|
|
if ($part) { |
|
345
|
|
|
$result[] = $part; |
|
346
|
|
|
} |
|
347
|
|
|
$body = substr($body, $commaPos+1); |
|
348
|
|
|
} |
|
349
|
|
|
//here we have last field (or index) definition + part after closing bracket (ENGINE, ect) |
|
350
|
|
|
$closeBracketPos = $this->getDelimRpos($body, 0, ')'); |
|
351
|
|
|
if ($closeBracketPos===false) { |
|
352
|
|
|
trigger_error('[WARNING] can not find closing bracket in table definition'); |
|
353
|
|
|
return false; |
|
354
|
|
|
} |
|
355
|
|
|
//get last field / index definition before closing bracket |
|
356
|
|
|
$part = substr($body, 0, $closeBracketPos); |
|
357
|
|
|
$result[] = trim($part); |
|
358
|
|
|
//get the suffix part along with the closing bracket |
|
359
|
|
|
$suffix = substr($body, $closeBracketPos); |
|
360
|
|
|
$suffix = trim($suffix); |
|
361
|
|
|
if ($suffix) { |
|
362
|
|
|
$result[] = $suffix; |
|
363
|
|
|
} |
|
364
|
|
|
return $result; |
|
365
|
|
|
} |
|
366
|
|
|
|
|
367
|
|
|
/** |
|
368
|
|
|
* returns array of fields or keys definitions that differs in the given tables structure |
|
369
|
|
|
* |
|
370
|
|
|
* @access private |
|
371
|
|
|
* @param sring $sourceSql table structure |
|
372
|
|
|
* @param sring $destSql right table structure supports some $options |
|
373
|
|
|
* supports some $options |
|
374
|
|
|
* @return array |
|
375
|
|
|
* - [0] |
|
376
|
|
|
* - source (string) out-of-date table field definition |
|
377
|
|
|
* - dest (string) reference table field definition |
|
378
|
|
|
* - [1]... |
|
379
|
|
|
*/ |
|
380
|
|
|
private function compareSql($sourceSql, $destSql)//$sourceSql, $destSql |
|
381
|
|
|
{ |
|
382
|
|
|
$result = array();
|
|
383
|
|
|
//split with comma delimiter, not line breaks |
|
384
|
|
|
$sourceParts = $this->splitTabSql($sourceSql); |
|
385
|
|
|
if ($sourceParts===false)//error parsing sql |
|
386
|
|
|
{ |
|
387
|
|
|
trigger_error('[WARNING] error parsing source sql'); |
|
388
|
|
|
return false; |
|
389
|
|
|
} |
|
390
|
|
|
$destParts = $this->splitTabSql($destSql); |
|
391
|
|
|
if ($destParts===false) { |
|
392
|
|
|
trigger_error('[WARNING] error parsing destination sql'); |
|
393
|
|
|
return false; |
|
394
|
|
|
} |
|
395
|
|
|
$sourcePartsIndexed = array(); |
|
396
|
|
|
$destPartsIndexed = array(); |
|
397
|
|
|
foreach($sourceParts as $line) |
|
398
|
|
|
{
|
|
399
|
|
|
$lineInfo = $this->processLine($line); |
|
400
|
|
|
if (!$lineInfo) { continue; |
|
401
|
|
|
} |
|
402
|
|
|
$sourcePartsIndexed[$lineInfo['key']] = $lineInfo['line']; |
|
403
|
|
|
} |
|
404
|
|
|
foreach($destParts as $line) |
|
405
|
|
|
{
|
|
406
|
|
|
$lineInfo = $this->processLine($line); |
|
407
|
|
|
if (!$lineInfo) { continue; |
|
408
|
|
|
} |
|
409
|
|
|
$destPartsIndexed[$lineInfo['key']] = $lineInfo['line']; |
|
410
|
|
|
} |
|
411
|
|
|
$sourceKeys = array_keys($sourcePartsIndexed); |
|
412
|
|
|
$destKeys = array_keys($destPartsIndexed); |
|
413
|
|
|
$all = array_unique(array_merge($sourceKeys, $destKeys)); |
|
414
|
|
|
sort($all);//fields first, then indexes - because fields are prefixed with '!' |
|
415
|
|
|
|
|
416
|
|
|
foreach ($all as $key) |
|
417
|
|
|
{ |
|
418
|
|
|
$info = array('source'=>'', 'dest'=>''); |
|
419
|
|
|
$inSource= in_array($key, $sourceKeys); |
|
420
|
|
|
$inDest= in_array($key, $destKeys); |
|
421
|
|
|
$sourceOrphan = $inSource && !$inDest; |
|
422
|
|
|
$destOrphan = $inDest && !$inSource; |
|
423
|
|
|
$different = $inSource && $inDest && $destPartsIndexed[$key]!=$sourcePartsIndexed[$key]; |
|
424
|
|
|
if ($sourceOrphan) { |
|
425
|
|
|
$info['source'] = $sourcePartsIndexed[$key]; |
|
426
|
|
|
} |
|
427
|
|
|
elseif ($destOrphan) { |
|
428
|
|
|
$info['dest'] = $destPartsIndexed[$key]; |
|
429
|
|
|
} |
|
430
|
|
|
elseif ($different) { |
|
431
|
|
|
$info['source'] = $sourcePartsIndexed[$key]; |
|
432
|
|
|
$info['dest'] = $destPartsIndexed[$key]; |
|
433
|
|
|
} |
|
434
|
|
|
else { continue; |
|
435
|
|
|
} |
|
436
|
|
|
$result[] = $info; |
|
437
|
|
|
} |
|
438
|
|
|
return $result; |
|
439
|
|
|
} |
|
440
|
|
|
|
|
441
|
|
|
/** |
|
442
|
|
|
* Transforms table structure defnition line into key=>value pair where the key is a string that uniquely |
|
443
|
|
|
* defines field or key desribed |
|
444
|
|
|
* |
|
445
|
|
|
* @access private |
|
446
|
|
|
* @param string $line field definition string |
|
447
|
|
|
* @return array array with single key=>value pair as described in the description |
|
448
|
|
|
* implements some options |
|
449
|
|
|
*/ |
|
450
|
|
|
private function processLine($line) |
|
451
|
|
|
{ |
|
452
|
|
|
$options = $this->config; |
|
453
|
|
|
$result = array('key'=>'', 'line'=>''); |
|
454
|
|
|
$line = rtrim(trim($line), ','); |
|
455
|
|
|
if (preg_match('/^(CREATE TABLE)|(\) ENGINE=)/i', $line))//first or last table definition line |
|
456
|
|
|
{ |
|
457
|
|
|
return false; |
|
458
|
|
|
} |
|
459
|
|
|
if (preg_match('/^(PRIMARY KEY)|(((UNIQUE )|(FULLTEXT ))?KEY `?\w+`?)/i', $line, $m))//key definition |
|
460
|
|
|
{ |
|
461
|
|
|
$key = $m[0]; |
|
462
|
|
|
} |
|
463
|
|
|
elseif (preg_match('/^`?\w+`?/i', $line, $m))//field definition |
|
464
|
|
|
{ |
|
465
|
|
|
$key = '!'.$m[0];//to make sure fields will be synchronised before the keys |
|
466
|
|
|
} |
|
467
|
|
|
else |
|
468
|
|
|
{ |
|
469
|
|
|
return false;//line has no valuable info (empty or comment) |
|
470
|
|
|
} |
|
471
|
|
|
//$key = str_replace('`', '', $key); |
|
472
|
|
|
if (!empty($options['varcharDefaultIgnore'])) { |
|
473
|
|
|
$line = preg_replace("/(var)?char\(([0-9]+)\) NOT NULL default ''/i", '$1char($2) NOT NULL', $line); |
|
474
|
|
|
} |
|
475
|
|
|
if (!empty($options['intDefaultIgnore'])) { |
|
476
|
|
|
$line = preg_replace("/((?:big)|(?:tiny))?int\(([0-9]+)\) NOT NULL default '0'/i", '$1int($2) NOT NULL', $line); |
|
477
|
|
|
} |
|
478
|
|
|
if (!empty($options['ignoreIncrement'])) { |
|
479
|
|
|
$line = preg_replace("/ AUTO_INCREMENT=[0-9]+/i", '', $line); |
|
480
|
|
|
} |
|
481
|
|
|
$result['key'] = $key; |
|
482
|
|
|
$result['line']= $line; |
|
483
|
|
|
return $result; |
|
484
|
|
|
} |
|
485
|
|
|
|
|
486
|
|
|
/** |
|
487
|
|
|
* Takes an output of compare() method to generate the set of sql needed to update source table to make it |
|
488
|
|
|
* look as a destination one |
|
489
|
|
|
* |
|
490
|
|
|
* @access private |
|
491
|
|
|
* @param array $diff compare() method output |
|
492
|
|
|
* @return array list of sql statements |
|
493
|
|
|
* supports query generation options |
|
494
|
|
|
*/ |
|
495
|
|
|
private function getDiffSql($diff)//maybe add option to ommit or force 'IF NOT EXISTS', skip autoincrement |
|
496
|
|
|
{ |
|
497
|
|
|
$options = $this->config; |
|
498
|
|
|
$sqls = array(); |
|
499
|
|
|
if (!is_array($diff) || empty($diff)) { |
|
500
|
|
|
return $sqls; |
|
501
|
|
|
} |
|
502
|
|
|
foreach($diff as $tab=>$info) |
|
503
|
|
|
{ |
|
504
|
|
|
if ($info['sourceOrphan'])//delete it |
|
505
|
|
|
{ |
|
506
|
|
|
$sqls[] = 'DROP TABLE `'.$tab.'`'; |
|
507
|
|
|
} |
|
508
|
|
|
elseif ($info['destOrphan'])//create destination table in source |
|
509
|
|
|
{ |
|
510
|
|
|
$database = ''; |
|
511
|
|
|
$destSql = $this->getTabSql($this->destStruct, $tab, $database); |
|
|
|
|
|
|
512
|
|
|
if (!empty($options['ignoreIncrement'])) { |
|
513
|
|
|
$destSql = preg_replace("/\s*AUTO_INCREMENT=[0-9]+/i", '', $destSql); |
|
514
|
|
|
} |
|
515
|
|
|
if (!empty($options['ingoreIfNotExists'])) { |
|
516
|
|
|
$destSql = preg_replace("/IF NOT EXISTS\s*/i", '', $destSql); |
|
517
|
|
|
} |
|
518
|
|
|
if (!empty($options['forceIfNotExists'])) { |
|
519
|
|
|
$destSql = preg_replace('/(CREATE(?:\s*TEMPORARY)?\s*TABLE\s*)(?:IF NOT EXISTS\s*)?(`?\w+`?)/i', '$1IF NOT EXISTS $2', $destSql); |
|
520
|
|
|
} |
|
521
|
|
|
$sqls[] = $destSql; |
|
522
|
|
|
} |
|
523
|
|
|
else |
|
524
|
|
|
{ |
|
525
|
|
|
foreach($info['differs'] as $finfo) |
|
526
|
|
|
{ |
|
527
|
|
|
$inDest = !empty($finfo['dest']); |
|
528
|
|
|
$inSource = !empty($finfo['source']); |
|
529
|
|
|
if ($inSource && !$inDest) { |
|
530
|
|
|
$sql = $finfo['source']; |
|
531
|
|
|
$action = 'drop'; |
|
532
|
|
|
} |
|
533
|
|
|
elseif ($inDest && !$inSource) { |
|
534
|
|
|
$sql = $finfo['dest']; |
|
535
|
|
|
$action = 'add'; |
|
536
|
|
|
} |
|
537
|
|
|
else |
|
538
|
|
|
{ |
|
539
|
|
|
$sql = $finfo['dest']; |
|
540
|
|
|
$action = 'modify'; |
|
541
|
|
|
} |
|
542
|
|
|
$sql = $this->getActionSql($action, $tab, $sql); |
|
543
|
|
|
$sqls[] = $sql; |
|
544
|
|
|
} |
|
545
|
|
|
} |
|
546
|
|
|
} |
|
547
|
|
|
return $sqls; |
|
548
|
|
|
} |
|
549
|
|
|
|
|
550
|
|
|
/** |
|
551
|
|
|
* Compiles update sql |
|
552
|
|
|
* |
|
553
|
|
|
* @access private |
|
554
|
|
|
* @param string $action - 'drop', 'add' or 'modify' |
|
555
|
|
|
* @param string $tab table name |
|
556
|
|
|
* @param string $sql definition of the element to change |
|
557
|
|
|
* @return string update sql |
|
558
|
|
|
*/ |
|
559
|
|
|
private function getActionSql($action, $tab, $sql) |
|
560
|
|
|
{ |
|
561
|
|
|
$result = 'ALTER TABLE `'.$tab.'` '; |
|
562
|
|
|
$action = strtolower($action); |
|
563
|
|
|
$keyField = '`?\w`?(?:\(\d+\))?';//matches `name`(10) |
|
564
|
|
|
$keyFieldList = '(?:'.$keyField.'(?:,\s?)?)+';//matches `name`(10),`desc`(255) |
|
565
|
|
|
if (preg_match('/((?:PRIMARY )|(?:UNIQUE )|(?:FULLTEXT ))?KEY `?(\w+)?`?\s(\('.$keyFieldList.'\))/i', $sql, $m)) { //key and index operations |
|
566
|
|
|
$type = strtolower(trim($m[1])); |
|
567
|
|
|
$name = trim($m[2]); |
|
568
|
|
|
$fields = trim($m[3]); |
|
569
|
|
|
switch($action) |
|
570
|
|
|
{ |
|
571
|
|
|
case 'drop': |
|
572
|
|
|
if ($type=='primary') { |
|
573
|
|
|
$result.= 'DROP PRIMARY KEY'; |
|
574
|
|
|
} |
|
575
|
|
|
else |
|
576
|
|
|
{ |
|
577
|
|
|
$result.= 'DROP INDEX `'.$name.'`'; |
|
578
|
|
|
} |
|
579
|
|
|
break; |
|
580
|
|
|
case 'add': |
|
581
|
|
|
if ($type=='primary') { |
|
582
|
|
|
$result.= 'ADD PRIMARY KEY '.$fields; |
|
583
|
|
|
} |
|
584
|
|
|
elseif ($type=='') { |
|
585
|
|
|
$result.= 'ADD INDEX `'.$name.'` '.$fields; |
|
586
|
|
|
} |
|
587
|
|
View Code Duplication |
else |
|
|
|
|
|
|
588
|
|
|
{ |
|
589
|
|
|
$result .='ADD '.strtoupper($type).' `'.$name.'` '.$fields;//fulltext or unique |
|
590
|
|
|
} |
|
591
|
|
|
break; |
|
592
|
|
|
case 'modify': |
|
593
|
|
|
if ($type=='primary') { |
|
594
|
|
|
$result.='DROP PRIMARY KEY, ADD PRIMARY KEY '.$fields; |
|
595
|
|
|
} |
|
596
|
|
View Code Duplication |
elseif ($type=='') { |
|
|
|
|
|
|
597
|
|
|
$result.='DROP INDEX `'.$name.'`, ADD INDEX `'.$name.'` '.$fields; |
|
598
|
|
|
} |
|
599
|
|
View Code Duplication |
else |
|
|
|
|
|
|
600
|
|
|
{ |
|
601
|
|
|
$result.='DROP INDEX `'.$name.'`, ADD '.strtoupper($type).' `'.$name.'` '.$fields;//fulltext or unique |
|
602
|
|
|
} |
|
603
|
|
|
break; |
|
604
|
|
|
|
|
605
|
|
|
} |
|
606
|
|
|
} |
|
607
|
|
|
else //fields operations |
|
608
|
|
|
{ |
|
609
|
|
|
$sql = rtrim(trim($sql), ','); |
|
610
|
|
|
$result.= strtoupper($action); |
|
611
|
|
|
if ($action=='drop') { |
|
612
|
|
|
$spacePos = strpos($sql, ' '); |
|
613
|
|
|
$result.= ' '.substr($sql, 0, $spacePos); |
|
614
|
|
|
} |
|
615
|
|
|
else |
|
616
|
|
|
{ |
|
617
|
|
|
$result.= ' '.$sql; |
|
618
|
|
|
} |
|
619
|
|
|
} |
|
620
|
|
|
return $result; |
|
621
|
|
|
} |
|
622
|
|
|
|
|
623
|
|
|
/** |
|
624
|
|
|
* Searches for the position of the next delimiter which is not inside string literal like 'this ; ' or |
|
625
|
|
|
* like "this ; ". |
|
626
|
|
|
* |
|
627
|
|
|
* Handles escaped \" and \'. Also handles sql comments. |
|
628
|
|
|
* Actualy it is regex-based Finit State Machine (FSN) |
|
629
|
|
|
* |
|
630
|
|
|
* $skipInBrackets - if true, delimiter will be skipped if located inside (brackets) which are not string literals or comment parts |
|
631
|
|
|
*/ |
|
632
|
|
|
public function getDelimPos($string, $offset=0, $delim=';', $skipInBrackets=false) |
|
633
|
|
|
{ |
|
634
|
|
|
$stack = array(); |
|
635
|
|
|
$rbs = '\\\\'; //reg - escaped backslash |
|
636
|
|
|
$regPrefix = "(?<!$rbs)(?:$rbs{2})*"; |
|
637
|
|
|
$reg = $regPrefix.'("|\')|(/\\*)|(\\*/)|(-- )|(\r\n|\r|\n)|'; |
|
638
|
|
|
if ($skipInBrackets) { |
|
639
|
|
|
$reg.='(\(|\))|'; |
|
640
|
|
|
} |
|
641
|
|
|
else |
|
642
|
|
|
{ |
|
643
|
|
|
$reg.='()'; |
|
644
|
|
|
} |
|
645
|
|
|
$reg .= '('.preg_quote($delim).')'; |
|
646
|
|
|
while (preg_match('%'.$reg.'%', $string, $m, PREG_OFFSET_CAPTURE, $offset)) |
|
647
|
|
|
{ |
|
648
|
|
|
$offset = $m[0][1]+strlen($m[0][0]); |
|
649
|
|
View Code Duplication |
if (end($stack)=='/*') { |
|
|
|
|
|
|
650
|
|
|
if (!empty($m[3][0])) { |
|
651
|
|
|
array_pop($stack); |
|
652
|
|
|
} |
|
653
|
|
|
continue;//here we could also simplify regexp |
|
654
|
|
|
} |
|
655
|
|
View Code Duplication |
if (end($stack)=='-- ') { |
|
|
|
|
|
|
656
|
|
|
if (!empty($m[5][0])) { |
|
657
|
|
|
array_pop($stack); |
|
658
|
|
|
} |
|
659
|
|
|
continue;//here we could also simplify regexp |
|
660
|
|
|
} |
|
661
|
|
|
|
|
662
|
|
|
if (!empty($m[7][0]))// ';' found |
|
663
|
|
|
{ |
|
664
|
|
|
if (empty($stack)) { |
|
665
|
|
|
return $m[7][1]; |
|
666
|
|
|
} |
|
667
|
|
|
else |
|
668
|
|
|
{ |
|
669
|
|
|
//var_dump($stack, substr($string, $offset-strlen($m[0][0]))); |
|
670
|
|
|
} |
|
671
|
|
|
} |
|
672
|
|
|
if (!empty($m[6][0]))// '(' or ')' found |
|
673
|
|
|
{ |
|
674
|
|
|
if (empty($stack) && $m[6][0]=='(') { |
|
675
|
|
|
array_push($stack, $m[6][0]); |
|
676
|
|
|
} |
|
677
|
|
|
elseif($m[6][0]==')' && end($stack)=='(') { |
|
678
|
|
|
array_pop($stack); |
|
679
|
|
|
} |
|
680
|
|
|
} |
|
681
|
|
|
elseif (!empty($m[1][0]))// ' or " found |
|
682
|
|
|
{ |
|
683
|
|
|
if (end($stack)==$m[1][0]) { |
|
684
|
|
|
array_pop($stack); |
|
685
|
|
|
} |
|
686
|
|
|
else |
|
687
|
|
|
{ |
|
688
|
|
|
array_push($stack, $m[1][0]); |
|
689
|
|
|
} |
|
690
|
|
|
} |
|
691
|
|
View Code Duplication |
elseif (!empty($m[2][0])) // opening comment / * |
|
|
|
|
|
|
692
|
|
|
{ |
|
693
|
|
|
array_push($stack, $m[2][0]); |
|
694
|
|
|
} |
|
695
|
|
View Code Duplication |
elseif (!empty($m[4][0])) // opening comment -- |
|
|
|
|
|
|
696
|
|
|
{ |
|
697
|
|
|
array_push($stack, $m[4][0]); |
|
698
|
|
|
} |
|
699
|
|
|
} |
|
700
|
|
|
return false; |
|
701
|
|
|
} |
|
702
|
|
|
|
|
703
|
|
|
/** |
|
704
|
|
|
* works the same as getDelimPos except returns position of the first occurence of the delimiter starting from |
|
705
|
|
|
* the end of the string |
|
706
|
|
|
*/ |
|
707
|
|
|
public function getDelimRpos($string, $offset=0, $delim=';', $skipInBrackets=false) |
|
708
|
|
|
{ |
|
709
|
|
|
$pos = $this->getDelimPos($string, $offset, $delim, $skipInBrackets); |
|
710
|
|
|
if ($pos===false) { |
|
711
|
|
|
return false; |
|
712
|
|
|
} |
|
713
|
|
|
do |
|
714
|
|
|
{ |
|
715
|
|
|
$newPos=$this->getDelimPos($string, $pos+1, $delim, $skipInBrackets); |
|
716
|
|
|
if ($newPos !== false) { |
|
717
|
|
|
$pos = $newPos; |
|
718
|
|
|
} |
|
719
|
|
|
} |
|
720
|
|
|
while($newPos!==false); |
|
721
|
|
|
return $pos; |
|
722
|
|
|
} |
|
723
|
|
|
} |
|
724
|
|
|
|
bb-drummer /
my-application
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Adding explicit visibility (
private,protected, orpublic) is generally recommend to communicate to other developers how, and from where this method is intended to be used.