TextField.php

<?php

namespace Drupal\text\Plugin\migrate\field\d6;

use Drupal\migrate\Plugin\MigrationInterface;
use Drupal\migrate\Row;
use Drupal\migrate_drupal\Attribute\MigrateField;
use Drupal\migrate_drupal\Plugin\migrate\field\FieldPluginBase;
// cspell:ignore optionwidgets

/**
 * MigrateField Plugin for Drupal 6 text fields.
 */
class TextField extends FieldPluginBase {
    
    /**
     * {@inheritdoc}
     */
    public function getFieldWidgetMap() {
        return [
            'text_textfield' => 'text_textfield',
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function getFieldFormatterMap() {
        return [
            'default' => 'text_default',
            'trimmed' => 'text_trimmed',
            'plain' => 'basic_string',
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function defineValueProcessPipeline(MigrationInterface $migration, $field_name, $field_info) {
        $widget_type = $field_info['widget_type'] ?? $field_info['widget']['type'];
        if ($widget_type == 'optionwidgets_onoff') {
            $process = [
                'value' => [
                    'plugin' => 'static_map',
                    'source' => 'value',
                    'default_value' => 0,
                ],
            ];
            $checked_value = explode("\n", $field_info['global_settings']['allowed_values'])[1];
            if (str_contains($checked_value, '|')) {
                $checked_value = substr($checked_value, 0, strpos($checked_value, '|'));
            }
            $process['value']['map'][$checked_value] = 1;
        }
        else {
            // See \Drupal\migrate_drupal\Plugin\migrate\source\d6\User::baseFields(),
            // signature_format for an example of the YAML that represents this
            // process array.
            $process = [
                'value' => 'value',
                'format' => [
                    [
                        'plugin' => 'static_map',
                        'bypass' => TRUE,
                        'source' => 'format',
                        'map' => [
                            0 => NULL,
                        ],
                    ],
                    [
                        'plugin' => 'skip_on_empty',
                        'method' => 'process',
                    ],
                    [
                        'plugin' => 'migration_lookup',
                        'migration' => [
                            'd6_filter_format',
                            'd7_filter_format',
                        ],
                        'source' => 'format',
                    ],
                ],
            ];
        }
        $process = [
            'plugin' => 'sub_process',
            'source' => $field_name,
            'process' => $process,
        ];
        $migration->setProcessOfProperty($field_name, $process);
    }
    
    /**
     * {@inheritdoc}
     */
    public function getFieldType(Row $row) {
        $widget_type = $row->getSourceProperty('widget_type');
        $settings = $row->getSourceProperty('global_settings');
        if ($widget_type == 'text_textfield') {
            $field_type = $settings['text_processing'] ? 'text' : 'string';
            if (empty($settings['max_length']) || $settings['max_length'] > 255) {
                $field_type .= '_long';
            }
            return $field_type;
        }
        if ($widget_type == 'text_textarea') {
            $field_type = $settings['text_processing'] ? 'text_long' : 'string_long';
            return $field_type;
        }
        switch ($widget_type) {
            case 'optionwidgets_buttons':
            case 'optionwidgets_select':
                return 'list_string';
            case 'optionwidgets_onoff':
                return 'boolean';
            default:
                return parent::getFieldType($row);
        }
    }

}