public function ReadmehelpMarkdown::convertMarkdownImage in README Help 8

Converts markdown syntax image into HTML image.

The markdown image should look like this: @code ## A relative to a module directory path. The "Title" is optional. 

## An absolute path  @code

Note that in the case of relative path the internal path to a module's directory is taken from the current request. So, if the request looks like https://example.com/modules/contrib/my_module/images then the markdown image should be constructed like this: @code  @code

Parameters

string $text: The string to be filtered.

string $host: (optional) The base URL of a site, like: http(s)://example.com.

string $path: (optional) The path part of the URL, like: modules/contrib/my_module.

Return value

string The HTML source with image tags.

1 call to ReadmehelpMarkdown::convertMarkdownImage()

ReadmehelpMarkdown::process in src/Plugin/Filter/ReadmehelpMarkdown.php

Performs the filter processing.

File

src/Plugin/Filter/ReadmehelpMarkdown.php, line 565

Class

ReadmehelpMarkdown

Provides a filter for markdown.

Namespace

Drupal\readmehelp\Plugin\Filter

Code

public function convertMarkdownImage($text, $host, $path) {
  $parts = explode('?', $path);
  $path = isset($parts[0]) ? $parts[0] : 'NOT-A-PATH';
  $pattern = '/(!\\[((?>[^\\[\\]]+|\\[\\])*)\\]\\s?\\([ \\n]*(?:<(\\S*)>|((?>[^()\\s]+|\\((?>\\)))*))[ \\n]*(([\'"])(.*?)\\6[ \\n]*)?\\))/xs';
  return preg_replace_callback($pattern, function ($matches) use ($host, $path) {
    $alt = $matches[2];
    $url = $matches[3] == '' ? $matches[4] : $matches[3];
    $title = empty($matches[7]) ? $alt : $matches[7];
    $src = "{$host}/{$path}/{$url}";
    if (preg_match('/^http/', $url)) {
      $src = $url;
    }
    return "<img src=\"{$src}\" alt=\"{$alt}\" title=\"{$title}\" class=\"markdown-image\" />";
  }, $text);
}