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<?php |
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namespace Lagdo\DbAdmin\Driver\Sqlite\Db; |
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use Lagdo\DbAdmin\Driver\Entity\IndexEntity; |
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use Lagdo\DbAdmin\Driver\Entity\TableEntity; |
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use Lagdo\DbAdmin\Driver\Entity\TableFieldEntity; |
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use function preg_match; |
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use function str_replace; |
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use function strtolower; |
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use function preg_match_all; |
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use function preg_quote; |
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use function array_filter; |
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trait TableTrait |
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{ |
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/** |
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* @param string $type |
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* |
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* @return string |
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*/ |
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private function rowType(string $type): string |
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{ |
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if (preg_match('~int~i', $type)) { |
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return 'integer'; |
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} |
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if (preg_match('~char|clob|text~i', $type)) { |
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return 'text'; |
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} |
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if (preg_match('~blob~i', $type)) { |
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return 'blob'; |
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} |
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if (preg_match('~real|floa|doub~i', $type)) { |
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return 'real'; |
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} |
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return 'numeric'; |
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} |
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/** |
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* @param array $row |
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* |
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* @return mixed|null |
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*/ |
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private function defaultvalue(array $row) |
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{ |
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$default = $row["dflt_value"]; |
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if (preg_match("~'(.*)'~", $default, $match)) { |
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return str_replace("''", "'", $match[1]); |
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} |
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if ($default == "NULL") { |
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return null; |
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} |
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return $default; |
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} |
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/** |
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* @param array $row |
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* |
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* @return TableFieldEntity |
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*/ |
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private function makeFieldEntity(array $row): TableFieldEntity |
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{ |
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$field = new TableFieldEntity(); |
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$type = strtolower($row["type"]); |
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$field->name = $row["name"]; |
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$field->type = $this->rowType($type); |
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$field->fullType = $type; |
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$field->default = $this->defaultvalue($row); |
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$field->null = !$row["notnull"]; |
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$field->privileges = ["select" => 1, "insert" => 1, "update" => 1]; |
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$field->primary = $row["pk"]; |
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return $field; |
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} |
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/** |
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* @param string $table |
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* |
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* @return array |
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*/ |
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private function tableFields(string $table): array |
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{ |
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$fields = []; |
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$rows = $this->driver->rows('PRAGMA table_info(' . $this->driver->table($table) . ')'); |
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$primary = ""; |
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foreach ($rows as $row) { |
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$name = $row["name"]; |
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$type = strtolower($row["type"]); |
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$field = $this->makeFieldEntity($row); |
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if ($row["pk"]) { |
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if ($primary != "") { |
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$fields[$primary]->autoIncrement = false; |
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} elseif (preg_match('~^integer$~i', $type)) { |
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$field->autoIncrement = true; |
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} |
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$primary = $name; |
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} |
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$fields[$name] = $field; |
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} |
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return $fields; |
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} |
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/** |
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* @param string $table |
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* |
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* @return array |
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*/ |
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private function queryStatus(string $table = ''): array |
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{ |
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$query = "SELECT name AS Name, type AS Engine, 'rowid' AS Oid, '' AS Auto_increment " . |
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"FROM sqlite_master WHERE type IN ('table', 'view') " . |
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($table != "" ? "AND name = " . $this->driver->quote($table) : "ORDER BY name"); |
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return $this->driver->rows($query); |
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} |
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/** |
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* @param array $row |
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* |
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* @return TableEntity |
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*/ |
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private function makeStatus(array $row): TableEntity |
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{ |
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$status = new TableEntity($row['Name']); |
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$status->engine = $row['Engine']; |
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$status->oid = $row['Oid']; |
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// $status->Auto_increment = $row['Auto_increment']; |
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$query = 'SELECT COUNT(*) FROM ' . $this->driver->escapeId($row['Name']); |
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$status->rows = $this->driver->result($query); |
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return $status; |
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} |
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/** |
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* @param array $row |
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* @param array $results |
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* @param string $table |
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* |
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* @return IndexEntity |
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*/ |
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private function makeIndexEntity(array $row, array $results, string $table): IndexEntity |
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{ |
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$index = new IndexEntity(); |
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$index->name = $row["name"]; |
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$index->type = $row["unique"] ? "UNIQUE" : "INDEX"; |
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$index->lengths = []; |
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$index->descs = []; |
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$columns = $this->driver->rows("PRAGMA index_info(" . $this->driver->escapeId($index->name) . ")"); |
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foreach ($columns as $column) { |
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$index->columns[] = $column["name"]; |
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$index->descs[] = null; |
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} |
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if (preg_match('~^CREATE( UNIQUE)? INDEX ' . preg_quote($this->driver->escapeId($index->name) . ' ON ' . |
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$this->driver->escapeId($table), '~') . ' \((.*)\)$~i', $results[$index->name], $regs)) { |
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preg_match_all('/("[^"]*+")+( DESC)?/', $regs[2], $matches); |
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foreach ($matches[2] as $key => $val) { |
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if ($val) { |
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$index->descs[$key] = '1'; |
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} |
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} |
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} |
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return $index; |
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} |
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/** |
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* @param string $table |
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* |
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* @return IndexEntity|null |
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*/ |
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private function queryPrimaryIndex(string $table): ?IndexEntity |
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{ |
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$primaryIndex = null; |
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$query = "SELECT sql FROM sqlite_master WHERE type = 'table' AND name = " . $this->driver->quote($table); |
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$result = $this->driver->result($query); |
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if (preg_match('~\bPRIMARY\s+KEY\s*\((([^)"]+|"[^"]*"|`[^`]*`)++)~i', $result, $match)) { |
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$primaryIndex = new IndexEntity(); |
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$primaryIndex->type = "PRIMARY"; |
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preg_match_all('~((("[^"]*+")+|(?:`[^`]*+`)+)|(\S+))(\s+(ASC|DESC))?(,\s*|$)~i', |
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$match[1], $matches, PREG_SET_ORDER); |
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foreach ($matches as $match) { |
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$primaryIndex->columns[] = $this->driver->unescapeId($match[2]) . $match[4]; |
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$primaryIndex->descs[] = (preg_match('~DESC~i', $match[5]) ? '1' : null); |
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} |
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} |
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return $primaryIndex; |
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} |
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/** |
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* @param string $table |
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* |
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* @return IndexEntity|null |
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*/ |
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private function makePrimaryIndex(string $table): ?IndexEntity |
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{ |
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$primaryIndex = $this->queryPrimaryIndex($table); |
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if ($primaryIndex !== null) { |
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return $primaryIndex; |
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} |
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$primaryFields = array_filter($this->fields($table), function($field) { |
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return $field->primary; |
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}); |
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if (!$primaryFields) { |
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return null; |
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} |
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$primaryIndex = new IndexEntity(); |
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$primaryIndex->type = "PRIMARY"; |
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$primaryIndex->lengths = []; |
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$primaryIndex->descs = [null]; |
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$primaryIndex->columns = []; |
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foreach ($primaryFields as $name => $field) { |
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$primaryIndex->columns[] = $name; |
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} |
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return $primaryIndex; |
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} |
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/** |
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* @param IndexEntity $index |
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* @param IndexEntity $primaryIndex |
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* |
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* @return bool |
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*/ |
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private function indexIsPrimary(IndexEntity $index, IndexEntity $primaryIndex): bool |
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{ |
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return $index->type === 'UNIQUE' && $index->columns == $primaryIndex->columns && |
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$index->descs == $primaryIndex->descs && preg_match("~^sqlite_~", $index->name); |
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} |
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} |
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