TextField.php

<?php

namespace Drupal\text\Plugin\migrate\field\d7;

use Drupal\migrate\Row;
use Drupal\migrate\MigrateSkipRowException;
use Drupal\migrate_drupal\Attribute\MigrateField;
use Drupal\migrate_drupal\Plugin\migrate\field\FieldPluginBase;
class TextField extends FieldPluginBase {
  
  /**
   * {@inheritdoc}
   */
  public function getFieldFormatterType(Row $row) {
    $field_type = $this->getFieldType($row);
    $formatter_type = $row->getSourceProperty('formatter/type');
    switch ($field_type) {
      case 'string':
        $formatter_type = str_replace([
          'text_default',
          'text_plain',
        ], 'string', $formatter_type);
        break;

      case 'string_long':
        $formatter_type = str_replace([
          'text_default',
          'text_plain',
        ], 'basic_string', $formatter_type);
        break;

    }
    return $formatter_type;
  }
  
  /**
   * {@inheritdoc}
   */
  public function getFieldWidgetType(Row $row) {
    $field_type = $this->getFieldType($row);
    $widget_type = $row->getSourceProperty('widget/type');
    switch ($field_type) {
      case 'string':
        $widget_type = str_replace('text_textfield', 'string_textfield', $widget_type);
        break;

      case 'string_long':
        $widget_type = str_replace('text_textarea', 'string_textarea', $widget_type);
        break;

    }
    return $widget_type;
  }
  
  /**
   * {@inheritdoc}
   */
  public function getFieldType(Row $row) {
    $type = $row->getSourceProperty('type');
    $plain_text = FALSE;
    $filtered_text = FALSE;
    foreach ($row->getSourceProperty('instances') as $instance) {
      // Check if this field has plain text instances, filtered text instances,
      // or both.
      $data = unserialize($instance['data']);
      switch ($data['settings']['text_processing']) {
        case '0':
          $plain_text = TRUE;
          break;

        case '1':
          $filtered_text = TRUE;
          break;

      }
    }
    if (in_array($type, [
      'text',
      'text_long',
    ])) {
      // If a text or text_long field has only plain text instances, migrate it
      // to a string or string_long field.
      if ($plain_text && !$filtered_text) {
        $type = str_replace([
          'text',
          'text_long',
        ], [
          'string',
          'string_long',
        ], $type);
      }
      elseif ($plain_text && $filtered_text) {
        $field_name = $row->getSourceProperty('field_name');
        throw new MigrateSkipRowException("Can't migrate source field {$field_name} configured with both plain text and filtered text processing. See https://www.drupal.org/docs/8/upgrade/known-issues-when-upgrading-from-drupal-6-or-7-to-drupal-8#plain-text");
      }
    }
    elseif ($type == 'text_with_summary' && $plain_text) {
      // If a text_with_summary field has plain text instances, skip the row
      // since there's no such thing as a string_with_summary field.
      $field_name = $row->getSourceProperty('field_name');
      throw new MigrateSkipRowException("Can't migrate source field {$field_name} of type text_with_summary configured with plain text processing. See https://www.drupal.org/docs/8/upgrade/known-issues-when-upgrading-from-drupal-6-or-7-to-drupal-8#plain-text");
    }
    return $type;
  }

}