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Current File : /srv/wp/ciieduconnect.in/www/core/modules/text/text.module
<?php

/**
 * @file
 * Defines simple text field types.
 */

use Drupal\Core\Url;
use Drupal\Component\Utility\Html;
use Drupal\Component\Utility\Unicode;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\filter\Entity\FilterFormat;

/**
 * Implements hook_help().
 */
function text_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    case 'help.page.text':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('The Text module allows you to create short and long text fields with optional summaries. See the <a href=":field">Field module help</a> and the <a href=":field_ui">Field UI help</a> pages for general information on fields and how to create and manage them. For more information, see the <a href=":text_documentation">online documentation for the Text module</a>.', [':field' => Url::fromRoute('help.page', ['name' => 'field'])->toString(), ':field_ui' => (\Drupal::moduleHandler()->moduleExists('field_ui')) ? Url::fromRoute('help.page', ['name' => 'field_ui'])->toString() : '#', ':text_documentation' => 'https://www.drupal.org/documentation/modules/text']) . '</p>';
      $output .= '<h3>' . t('Uses') . '</h3>';
      $output .= '<dl>';
      $output .= '<dt>' . t('Managing and displaying text fields') . '</dt>';
      $output .= '<dd>' . t('The <em>settings</em> and <em>display</em> of the text field can be configured separately. See the <a href=":field_ui">Field UI help</a> for more information on how to manage fields and their display.', [':field_ui' => (\Drupal::moduleHandler()->moduleExists('field_ui')) ? Url::fromRoute('help.page', ['name' => 'field_ui'])->toString() : '#']) . '</dd>';
      $output .= '<dt>' . t('Creating short text fields') . '</dt>';
      $output .= '<dd>' . t('If you choose <em>Text (plain)</em> or <em>Text (formatted)</em> as the field type on the <em>Manage fields</em> page, then a field with a single row is displayed. You can change the maximum text length in the <em>Field settings</em> when you set up the field.') . '</dd>';
      $output .= '<dt>' . t('Creating long text fields') . '</dt>';
      $output .= '<dd>' . t('If you choose <em>Text (plain, long)</em>, <em>Text (formatted, long)</em>, or <em>Text (formatted, long, with summary)</em> on the <em>Manage fields</em> page, then users can insert text of unlimited length. On the <em>Manage form display</em> page, you can set the number of rows that are displayed to users.') . '</dd>';
      $output .= '<dt>' . t('Trimming the text length') . '</dt>';
      $output .= '<dd>' . t('On the <em>Manage display</em> page you can choose to display a trimmed version of the text, and if so, where to cut off the text.') . '</dd>';
      $output .= '<dt>' . t('Displaying summaries instead of trimmed text') . '</dt>';
      $output .= '<dd>' . t('As an alternative to using a trimmed version of the text, you can enter a separate summary by choosing the <em>Text (formatted, long, with summary)</em> field type on the <em>Manage fields</em> page. Even when <em>Summary input</em> is enabled, and summaries are provided, you can display <em>trimmed</em> text nonetheless by choosing the appropriate format on the <em>Manage display</em> page.') . '</dd>';
      $output .= '<dt>' . t('Using text formats and editors') . '</dt>';
      $output .= '<dd>' . t('If you choose <em>Text (plain)</em> or <em>Text (plain, long)</em> you restrict the input to <em>Plain text</em> only. If you choose <em>Text (formatted)</em>, <em>Text (formatted, long)</em>, or <em>Text (formatted, long with summary)</em> you allow users to write formatted text. Which options are available to individual users depends on the settings on the <a href=":formats">Text formats and editors page</a>.', [':formats' => Url::fromRoute('filter.admin_overview')->toString()]) . '</dd>';
      $output .= '</dl>';
      return $output;
  }
}

/**
 * Generates a trimmed, formatted version of a text field value.
 *
 * If the end of the summary is not indicated using the <!--break--> delimiter
 * then we generate the summary automatically, trying to end it at a sensible
 * place such as the end of a paragraph, a line break, or the end of a sentence
 * (in that order of preference).
 *
 * @param $text
 *   The content for which a summary will be generated.
 * @param $format
 *   The format of the content. If the line break filter is present then we
 *   treat newlines embedded in $text as line breaks. If the htmlcorrector
 *   filter is present, it will be run on the generated summary (if different
 *   from the incoming $text).
 * @param $size
 *   The desired character length of the summary. If omitted, the default value
 *   will be used. Ignored if the special delimiter is present in $text.
 *
 * @return string
 *   The generated summary.
 */
function text_summary($text, $format = NULL, $size = NULL) {

  if (!isset($size)) {
    $size = \Drupal::config('text.settings')->get('default_summary_length');
  }

  // Find where the delimiter is in the body.
  $delimiter = strpos($text, '<!--break-->');

  // If the size is zero, and there is no delimiter, the entire body is the summary.
  if ($size == 0 && $delimiter === FALSE) {
    return $text;
  }

  // If a valid delimiter has been specified, use it to chop off the summary.
  if ($delimiter !== FALSE) {
    return substr($text, 0, $delimiter);
  }

  // Retrieve the filters of the specified text format, if any.
  if (isset($format)) {
    $filter_format = FilterFormat::load($format);
    // If the specified format does not exist, return nothing. $text is already
    // filtered text, but the remainder of this function will not be able to
    // ensure a sane and secure summary.
    if (!$filter_format || !($filters = $filter_format->filters())) {
      return '';
    }
  }

  // If we have a short body, the entire body is the summary.
  if (mb_strlen($text) <= $size) {
    return $text;
  }

  // If the delimiter has not been specified, try to split at paragraph or
  // sentence boundaries.

  // The summary may not be longer than maximum length specified. Initial slice.
  $summary = Unicode::truncate($text, $size);

  // Store the actual length of the UTF8 string -- which might not be the same
  // as $size.
  $max_rpos = strlen($summary);

  // How much to cut off the end of the summary so that it doesn't end in the
  // middle of a paragraph, sentence, or word.
  // Initialize it to maximum in order to find the minimum.
  $min_rpos = $max_rpos;

  // Store the reverse of the summary. We use strpos on the reversed needle and
  // haystack for speed and convenience.
  $reversed = strrev($summary);

  // Build an array of arrays of break points grouped by preference.
  $break_points = [];

  // A paragraph near the end of sliced summary is most preferable.
  $break_points[] = ['</p>' => 0];

  // If no complete paragraph then treat line breaks as paragraphs.
  $line_breaks = ['<br />' => 6, '<br>' => 4];
  // Newline only indicates a line break if line break converter
  // filter is present.
  if (isset($format) && $filters->has('filter_autop') && $filters->get('filter_autop')->status) {
    $line_breaks["\n"] = 1;
  }
  $break_points[] = $line_breaks;

  // If the first paragraph is too long, split at the end of a sentence.
  $break_points[] = ['. ' => 1, '! ' => 1, '? ' => 1, '。' => 0, '؟ ' => 1];

  // Iterate over the groups of break points until a break point is found.
  foreach ($break_points as $points) {
    // Look for each break point, starting at the end of the summary.
    foreach ($points as $point => $offset) {
      // The summary is already reversed, but the break point isn't.
      $rpos = strpos($reversed, strrev($point));
      if ($rpos !== FALSE) {
        $min_rpos = min($rpos + $offset, $min_rpos);
      }
    }

    // If a break point was found in this group, slice and stop searching.
    if ($min_rpos !== $max_rpos) {
      // Don't slice with length 0. Length must be <0 to slice from RHS.
      $summary = ($min_rpos === 0) ? $summary : substr($summary, 0, 0 - $min_rpos);
      break;
    }
  }

  // If filter_html or filter_htmlcorrector is enabled, normalize the output.
  if (isset($format)) {
    $filter_enabled = function (string $filter) use ($filters) : bool {
      return $filters->has($filter) && $filters->get($filter)->status;
    };
    if ($filter_enabled('filter_html') || $filter_enabled('filter_htmlcorrector')) {
      $summary = Html::normalize($summary);
    }
  }

  return $summary;
}

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LinuXploit