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<?php
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declare(strict_types=1);
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/**
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* This file is part of CodeIgniter 4 framework.
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*
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* (c) CodeIgniter Foundation <admin@codeigniter.com>
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*
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* For the full copyright and license information, please view
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* the LICENSE file that was distributed with this source code.
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*/
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namespace CodeIgniter\Commands\Database;
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use CodeIgniter\CLI\BaseCommand;
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use CodeIgniter\CLI\CLI;
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use CodeIgniter\Database\BaseConnection;
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use Config\Database;
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use InvalidArgumentException;
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/**
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* Get table data if it exists in the database.
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*
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* @see \CodeIgniter\Commands\Database\ShowTableInfoTest
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*/
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class ShowTableInfo extends BaseCommand
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{
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/**
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* The group the command is lumped under
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* when listing commands.
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*
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* @var string
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*/
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protected $group = 'Database';
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/**
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* The Command's name
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*
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* @var string
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*/
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protected $name = 'db:table';
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/**
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* the Command's short description
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*
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* @var string
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*/
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protected $description = 'Retrieves information on the selected table.';
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/**
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* the Command's usage
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*
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* @var string
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*/
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protected $usage = <<<'EOL'
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db:table [<table_name>] [options]
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Examples:
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db:table --show
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db:table --metadata
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db:table my_table --metadata
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db:table my_table
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db:table my_table --limit-rows 5 --limit-field-value 10 --desc
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EOL;
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/**
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* The Command's arguments
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*
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* @var array<string, string>
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*/
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protected $arguments = [
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'table_name' => 'The table name to show info',
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];
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/**
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* The Command's options
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*
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* @var array<string, string>
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*/
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protected $options = [
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'--show' => 'Lists the names of all database tables.',
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'--metadata' => 'Retrieves list containing field information.',
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'--desc' => 'Sorts the table rows in DESC order.',
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'--limit-rows' => 'Limits the number of rows. Default: 10.',
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'--limit-field-value' => 'Limits the length of field values. Default: 15.',
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'--dbgroup' => 'Database group to show.',
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];
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/**
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* @var list<list<int|string>> Table Data.
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*/
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private array $tbody;
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private ?BaseConnection $db = null;
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/**
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* @var bool Sort the table rows in DESC order or not.
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*/
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private bool $sortDesc = false;
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private string $DBPrefix;
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public function run(array $params)
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{
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$dbGroup = $params['dbgroup'] ?? CLI::getOption('dbgroup');
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try {
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$this->db = Database::connect($dbGroup);
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} catch (InvalidArgumentException $e) {
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CLI::error($e->getMessage());
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return EXIT_ERROR;
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}
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$this->DBPrefix = $this->db->getPrefix();
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$this->showDBConfig();
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$tables = $this->db->listTables();
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if (array_key_exists('desc', $params)) {
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$this->sortDesc = true;
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}
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if ($tables === []) {
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CLI::error('Database has no tables!', 'light_gray', 'red');
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CLI::newLine();
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return EXIT_ERROR;
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}
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if (array_key_exists('show', $params)) {
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$this->showAllTables($tables);
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return EXIT_ERROR;
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}
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$tableName = $params[0] ?? null;
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$limitRows = (int) ($params['limit-rows'] ?? 10);
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$limitFieldValue = (int) ($params['limit-field-value'] ?? 15);
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while (! in_array($tableName, $tables, true)) {
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$tableNameNo = CLI::promptByKey(
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['Here is the list of your database tables:', 'Which table do you want to see?'],
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$tables,
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'required'
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);
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CLI::newLine();
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$tableName = $tables[$tableNameNo] ?? null;
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}
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if (array_key_exists('metadata', $params)) {
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$this->showFieldMetaData($tableName);
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return EXIT_SUCCESS;
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}
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$this->showDataOfTable($tableName, $limitRows, $limitFieldValue);
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return EXIT_SUCCESS;
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}
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private function showDBConfig(): void
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{
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$data = [[
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'hostname' => $this->db->hostname,
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'database' => $this->db->getDatabase(),
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'username' => $this->db->username,
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'DBDriver' => $this->db->getPlatform(),
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'DBPrefix' => $this->DBPrefix,
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'port' => $this->db->port,
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]];
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CLI::table(
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$data,
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['hostname', 'database', 'username', 'DBDriver', 'DBPrefix', 'port']
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);
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}
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private function removeDBPrefix(): void
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{
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$this->db->setPrefix('');
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}
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private function restoreDBPrefix(): void
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{
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$this->db->setPrefix($this->DBPrefix);
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}
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/**
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* Show Data of Table
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*
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* @return void
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*/
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private function showDataOfTable(string $tableName, int $limitRows, int $limitFieldValue)
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{
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CLI::write("Data of Table \"{$tableName}\":", 'black', 'yellow');
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CLI::newLine();
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$this->removeDBPrefix();
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$thead = $this->db->getFieldNames($tableName);
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$this->restoreDBPrefix();
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// If there is a field named `id`, sort by it.
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$sortField = null;
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if (in_array('id', $thead, true)) {
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$sortField = 'id';
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}
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$this->tbody = $this->makeTableRows($tableName, $limitRows, $limitFieldValue, $sortField);
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CLI::table($this->tbody, $thead);
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}
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/**
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* Show All Tables
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*
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* @param list<string> $tables
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*
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* @return void
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*/
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private function showAllTables(array $tables)
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{
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CLI::write('The following is a list of the names of all database tables:', 'black', 'yellow');
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CLI::newLine();
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$thead = ['ID', 'Table Name', 'Num of Rows', 'Num of Fields'];
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$this->tbody = $this->makeTbodyForShowAllTables($tables);
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CLI::table($this->tbody, $thead);
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CLI::newLine();
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}
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/**
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* Make body for table
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*
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* @param list<string> $tables
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*
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* @return list<list<int|string>>
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*/
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private function makeTbodyForShowAllTables(array $tables): array
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{
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$this->removeDBPrefix();
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foreach ($tables as $id => $tableName) {
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$table = $this->db->protectIdentifiers($tableName);
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$db = $this->db->query("SELECT * FROM {$table}");
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$this->tbody[] = [
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$id + 1,
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$tableName,
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$db->getNumRows(),
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$db->getFieldCount(),
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];
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}
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$this->restoreDBPrefix();
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if ($this->sortDesc) {
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krsort($this->tbody);
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}
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return $this->tbody;
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}
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/**
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* Make table rows
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*
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* @return list<list<int|string>>
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*/
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private function makeTableRows(
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string $tableName,
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int $limitRows,
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int $limitFieldValue,
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?string $sortField = null
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): array {
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$this->tbody = [];
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$this->removeDBPrefix();
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$builder = $this->db->table($tableName);
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$builder->limit($limitRows);
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if ($sortField !== null) {
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$builder->orderBy($sortField, $this->sortDesc ? 'DESC' : 'ASC');
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}
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$rows = $builder->get()->getResultArray();
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$this->restoreDBPrefix();
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foreach ($rows as $row) {
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$row = array_map(
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static fn ($item): string => mb_strlen((string) $item) > $limitFieldValue
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? mb_substr((string) $item, 0, $limitFieldValue) . '...'
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: (string) $item,
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$row
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);
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$this->tbody[] = $row;
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}
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if ($sortField === null && $this->sortDesc) {
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krsort($this->tbody);
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}
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return $this->tbody;
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}
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private function showFieldMetaData(string $tableName): void
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{
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CLI::write("List of Metadata Information in Table \"{$tableName}\":", 'black', 'yellow');
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CLI::newLine();
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$thead = ['Field Name', 'Type', 'Max Length', 'Nullable', 'Default', 'Primary Key'];
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$this->removeDBPrefix();
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$fields = $this->db->getFieldData($tableName);
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$this->restoreDBPrefix();
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foreach ($fields as $row) {
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$this->tbody[] = [
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$row->name,
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$row->type,
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$row->max_length,
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isset($row->nullable) ? $this->setYesOrNo($row->nullable) : 'n/a',
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$row->default,
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isset($row->primary_key) ? $this->setYesOrNo($row->primary_key) : 'n/a',
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];
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}
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if ($this->sortDesc) {
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krsort($this->tbody);
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}
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CLI::table($this->tbody, $thead);
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}
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/**
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* @param bool|int|string|null $fieldValue
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*/
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private function setYesOrNo($fieldValue): string
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{
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if ((bool) $fieldValue) {
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return CLI::color('Yes', 'green');
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}
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return CLI::color('No', 'red');
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}
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}
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