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Current File : /proc/thread-self/root/usr/share/php/PhpMyAdmin/SqlParser/Utils/Table.php
<?php

/**
 * Table utilities.
 */

namespace PhpMyAdmin\SqlParser\Utils;

use PhpMyAdmin\SqlParser\Statements\CreateStatement;

/**
 * Table utilities.
 *
 * @category   Statement
 *
 * @license    https://www.gnu.org/licenses/gpl-2.0.txt GPL-2.0+
 */
class Table
{
    /**
     * Gets the foreign keys of the table.
     *
     * @param CreateStatement $statement the statement to be processed
     *
     * @return array
     */
    public static function getForeignKeys($statement)
    {
        if (empty($statement->fields)
            || (! is_array($statement->fields))
            || (! $statement->options->has('TABLE'))
        ) {
            return array();
        }

        $ret = array();

        foreach ($statement->fields as $field) {
            if (empty($field->key) || ($field->key->type !== 'FOREIGN KEY')) {
                continue;
            }

            $columns = array();
            foreach ($field->key->columns as $column) {
                $columns[] = $column['name'];
            }

            $tmp = array(
                'constraint' => $field->name,
                'index_list' => $columns
            );

            if (! empty($field->references)) {
                $tmp['ref_db_name'] = $field->references->table->database;
                $tmp['ref_table_name'] = $field->references->table->table;
                $tmp['ref_index_list'] = $field->references->columns;

                if ($opt = $field->references->options->has('ON UPDATE')) {
                    $tmp['on_update'] = str_replace(' ', '_', $opt);
                }

                if ($opt = $field->references->options->has('ON DELETE')) {
                    $tmp['on_delete'] = str_replace(' ', '_', $opt);
                }

                // if (($opt = $field->references->options->has('MATCH'))) {
                //     $tmp['match'] = str_replace(' ', '_', $opt);
                // }
            }

            $ret[] = $tmp;
        }

        return $ret;
    }

    /**
     * Gets fields of the table.
     *
     * @param CreateStatement $statement the statement to be processed
     *
     * @return array
     */
    public static function getFields($statement)
    {
        if (empty($statement->fields)
            || (! is_array($statement->fields))
            || (! $statement->options->has('TABLE'))
        ) {
            return array();
        }

        $ret = array();

        foreach ($statement->fields as $field) {
            // Skipping keys.
            if (empty($field->type)) {
                continue;
            }

            $ret[$field->name] = array(
                'type' => $field->type->name,
                'timestamp_not_null' => false
            );

            if ($field->options) {
                if ($field->type->name === 'TIMESTAMP') {
                    if ($field->options->has('NOT NULL')) {
                        $ret[$field->name]['timestamp_not_null'] = true;
                    }
                }

                if ($option = $field->options->has('DEFAULT')) {
                    $ret[$field->name]['default_value'] = $option;
                    if ($option === 'CURRENT_TIMESTAMP') {
                        $ret[$field->name]['default_current_timestamp'] = true;
                    }
                }

                if ($option = $field->options->has('ON UPDATE')) {
                    if ($option === 'CURRENT_TIMESTAMP') {
                        $ret[$field->name]['on_update_current_timestamp'] = true;
                    }
                }

                if ($option = $field->options->has('AS')) {
                    $ret[$field->name]['generated'] = true;
                    $ret[$field->name]['expr'] = $option;
                }
            }
        }

        return $ret;
    }
}

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