6 files changed, 247 insertions, 25 deletions

diff --git a/application/formatter/BookmarkDefaultFormatter.php b/application/formatter/BookmarkDefaultFormatter.php
index 9d4a0fa0..7e0afafc 100644
--- a/application/formatter/BookmarkDefaultFormatter.php
+++ b/application/formatter/BookmarkDefaultFormatter.php
@@ -12,10 +12,13 @@ namespace Shaarli\Formatter;
  */
 class BookmarkDefaultFormatter extends BookmarkFormatter
 {
+    protected const SEARCH_HIGHLIGHT_OPEN = '|@@HIGHLIGHT';
+    protected const SEARCH_HIGHLIGHT_CLOSE = 'HIGHLIGHT@@|';
+
     /**
      * @inheritdoc
      */
-    public function formatTitle($bookmark)
+    protected function formatTitle($bookmark)
     {
         return escape($bookmark->getTitle());
     }
@@ -23,10 +26,33 @@ class BookmarkDefaultFormatter extends BookmarkFormatter
     /**
      * @inheritdoc
      */
-    public function formatDescription($bookmark)
+    protected function formatTitleHtml($bookmark)
+    {
+        $title = $this->tokenizeSearchHighlightField(
+            $bookmark->getTitle() ?? '',
+            $bookmark->getAdditionalContentEntry('search_highlight')['title'] ?? []
+        );
+
+        return $this->replaceTokens(escape($title));
+    }
+
+    /**
+     * @inheritdoc
+     */
+    protected function formatDescription($bookmark)
     {
         $indexUrl = ! empty($this->contextData['index_url']) ? $this->contextData['index_url'] : '';
-        return format_description(escape($bookmark->getDescription()), $indexUrl);
+        $description = $this->tokenizeSearchHighlightField(
+            $bookmark->getDescription() ?? '',
+            $bookmark->getAdditionalContentEntry('search_highlight')['description'] ?? []
+        );
+        $description = format_description(
+            escape($description),
+            $indexUrl,
+            $this->conf->get('formatter_settings.autolink', true)
+        );
+
+        return $this->replaceTokens($description);
     }
 
     /**
@@ -40,15 +66,36 @@ class BookmarkDefaultFormatter extends BookmarkFormatter
     /**
      * @inheritdoc
      */
-    public function formatTagString($bookmark)
+    protected function formatTagListHtml($bookmark)
     {
-        return implode(' ', $this->formatTagList($bookmark));
+        $tagsSeparator = $this->conf->get('general.tags_separator', ' ');
+        if (empty($bookmark->getAdditionalContentEntry('search_highlight')['tags'])) {
+            return $this->formatTagList($bookmark);
+        }
+
+        $tags = $this->tokenizeSearchHighlightField(
+            $bookmark->getTagsString($tagsSeparator),
+            $bookmark->getAdditionalContentEntry('search_highlight')['tags']
+        );
+        $tags = $this->filterTagList(tags_str2array($tags, $tagsSeparator));
+        $tags = escape($tags);
+        $tags = $this->replaceTokensArray($tags);
+
+        return $tags;
     }
 
     /**
      * @inheritdoc
      */
-    public function formatUrl($bookmark)
+    protected function formatTagString($bookmark)
+    {
+        return implode($this->conf->get('general.tags_separator'), $this->formatTagList($bookmark));
+    }
+
+    /**
+     * @inheritdoc
+     */
+    protected function formatUrl($bookmark)
     {
         if ($bookmark->isNote() && isset($this->contextData['index_url'])) {
             return rtrim($this->contextData['index_url'], '/') . '/' . escape(ltrim($bookmark->getUrl(), '/'));
@@ -80,8 +127,89 @@ class BookmarkDefaultFormatter extends BookmarkFormatter
     /**
      * @inheritdoc
      */
+    protected function formatUrlHtml($bookmark)
+    {
+        $url = $this->tokenizeSearchHighlightField(
+            $bookmark->getUrl() ?? '',
+            $bookmark->getAdditionalContentEntry('search_highlight')['url'] ?? []
+        );
+
+        return $this->replaceTokens(escape($url));
+    }
+
+    /**
+     * @inheritdoc
+     */
     protected function formatThumbnail($bookmark)
     {
         return escape($bookmark->getThumbnail());
     }
+
+    /**
+     * Insert search highlight token in provided field content based on a list of search result positions
+     *
+     * @param string     $fieldContent
+     * @param array|null $positions    List of of search results with 'start' and 'end' positions.
+     *
+     * @return string Updated $fieldContent.
+     */
+    protected function tokenizeSearchHighlightField(string $fieldContent, ?array $positions): string
+    {
+        if (empty($positions)) {
+            return $fieldContent;
+        }
+
+        $insertedTokens = 0;
+        $tokenLength = strlen(static::SEARCH_HIGHLIGHT_OPEN);
+        foreach ($positions as $position) {
+            $position = [
+                'start' => $position['start'] + ($insertedTokens * $tokenLength),
+                'end' => $position['end'] + ($insertedTokens * $tokenLength),
+            ];
+
+            $content = mb_substr($fieldContent, 0, $position['start']);
+            $content .= static::SEARCH_HIGHLIGHT_OPEN;
+            $content .= mb_substr($fieldContent, $position['start'], $position['end'] - $position['start']);
+            $content .= static::SEARCH_HIGHLIGHT_CLOSE;
+            $content .= mb_substr($fieldContent, $position['end']);
+
+            $fieldContent = $content;
+
+            $insertedTokens += 2;
+        }
+
+        return $fieldContent;
+    }
+
+    /**
+     * Replace search highlight tokens with HTML highlighted span.
+     *
+     * @param string $fieldContent
+     *
+     * @return string updated content.
+     */
+    protected function replaceTokens(string $fieldContent): string
+    {
+        return str_replace(
+            [static::SEARCH_HIGHLIGHT_OPEN, static::SEARCH_HIGHLIGHT_CLOSE],
+            ['<span class="search-highlight">', '</span>'],
+            $fieldContent
+        );
+    }
+
+    /**
+     * Apply replaceTokens to an array of content strings.
+     *
+     * @param string[] $fieldContents
+     *
+     * @return array
+     */
+    protected function replaceTokensArray(array $fieldContents): array
+    {
+        foreach ($fieldContents as &$entry) {
+            $entry = $this->replaceTokens($entry);
+        }
+
+        return $fieldContents;
+    }
 }
diff --git a/application/formatter/BookmarkFormatter.php b/application/formatter/BookmarkFormatter.php
index 0042dafe..124ce78b 100644
--- a/application/formatter/BookmarkFormatter.php
+++ b/application/formatter/BookmarkFormatter.php
@@ -2,7 +2,7 @@
 
 namespace Shaarli\Formatter;
 
-use DateTime;
+use DateTimeInterface;
 use Shaarli\Bookmark\Bookmark;
 use Shaarli\Config\ConfigManager;
 
@@ -11,6 +11,29 @@ use Shaarli\Config\ConfigManager;
  *
  * Abstract class processing all bookmark attributes through methods designed to be overridden.
  *
+ * List of available formatted fields:
+ *   - id                 ID
+ *   - shorturl           Unique identifier, used in permalinks
+ *   - url                URL, can be altered in some way, e.g. passing through an HTTP reverse proxy
+ *   - real_url           (legacy) same as `url`
+ *   - url_html           URL to be displayed in HTML content (it can contain HTML tags)
+ *   - title              Title
+ *   - title_html         Title to be displayed in HTML content (it can contain HTML tags)
+ *   - description        Description content. It most likely contains HTML tags
+ *   - thumbnail          Thumbnail: path to local cache file, false if there is none, null if hasn't been retrieved
+ *   - taglist            List of tags (array)
+ *   - taglist_urlencoded List of tags (array) URL encoded: it must be used to create a link to a URL containing a tag
+ *   - taglist_html       List of tags (array) to be displayed in HTML content (it can contain HTML tags)
+ *   - tags               Tags separated by a single whitespace
+ *   - tags_urlencoded    Tags separated by a single whitespace, URL encoded: must be used to create a link
+ *   - sticky             Is sticky (bool)
+ *   - private            Is private (bool)
+ *   - class              Additional CSS class
+ *   - created            Creation DateTime
+ *   - updated            Last edit DateTime
+ *   - timestamp          Creation timestamp
+ *   - updated_timestamp  Last edit timestamp
+ *
  * @package Shaarli\Formatter
  */
 abstract class BookmarkFormatter
@@ -55,13 +78,16 @@ abstract class BookmarkFormatter
         $out['shorturl'] = $this->formatShortUrl($bookmark);
         $out['url'] = $this->formatUrl($bookmark);
         $out['real_url'] = $this->formatRealUrl($bookmark);
+        $out['url_html'] = $this->formatUrlHtml($bookmark);
         $out['title'] = $this->formatTitle($bookmark);
+        $out['title_html'] = $this->formatTitleHtml($bookmark);
         $out['description'] = $this->formatDescription($bookmark);
         $out['thumbnail'] = $this->formatThumbnail($bookmark);
-        $out['urlencoded_taglist'] = $this->formatUrlEncodedTagList($bookmark);
         $out['taglist'] = $this->formatTagList($bookmark);
-        $out['urlencoded_tags'] = $this->formatUrlEncodedTagString($bookmark);
+        $out['taglist_urlencoded'] = $this->formatTagListUrlEncoded($bookmark);
+        $out['taglist_html'] = $this->formatTagListHtml($bookmark);
         $out['tags'] = $this->formatTagString($bookmark);
+        $out['tags_urlencoded'] = $this->formatTagStringUrlEncoded($bookmark);
         $out['sticky'] = $bookmark->isSticky();
         $out['private'] = $bookmark->isPrivate();
         $out['class'] = $this->formatClass($bookmark);
@@ -69,6 +95,7 @@ abstract class BookmarkFormatter
         $out['updated'] = $this->formatUpdated($bookmark);
         $out['timestamp'] = $this->formatCreatedTimestamp($bookmark);
         $out['updated_timestamp'] = $this->formatUpdatedTimestamp($bookmark);
+
         return $out;
     }
 
@@ -136,6 +163,18 @@ abstract class BookmarkFormatter
     }
 
     /**
+     * Format Url Html: to be displayed in HTML content, it can contains HTML tags.
+     *
+     * @param Bookmark $bookmark instance
+     *
+     * @return string formatted Url HTML
+     */
+    protected function formatUrlHtml($bookmark)
+    {
+        return $this->formatUrl($bookmark);
+    }
+
+    /**
      * Format Title
      *
      * @param Bookmark $bookmark instance
@@ -148,6 +187,18 @@ abstract class BookmarkFormatter
     }
 
     /**
+     * Format Title HTML: to be displayed in HTML content, it can contains HTML tags.
+     *
+     * @param Bookmark $bookmark instance
+     *
+     * @return string formatted Title
+     */
+    protected function formatTitleHtml($bookmark)
+    {
+        return $bookmark->getTitle();
+    }
+
+    /**
      * Format Description
      *
      * @param Bookmark $bookmark instance
@@ -190,12 +241,24 @@ abstract class BookmarkFormatter
      *
      * @return array formatted Tags
      */
-    protected function formatUrlEncodedTagList($bookmark)
+    protected function formatTagListUrlEncoded($bookmark)
     {
         return array_map('urlencode', $this->filterTagList($bookmark->getTags()));
     }
 
     /**
+     * Format Tags HTML: to be displayed in HTML content, it can contains HTML tags.
+     *
+     * @param Bookmark $bookmark instance
+     *
+     * @return array formatted Tags
+     */
+    protected function formatTagListHtml($bookmark)
+    {
+        return $this->formatTagList($bookmark);
+    }
+
+    /**
      * Format TagString
      *
      * @param Bookmark $bookmark instance
@@ -204,7 +267,7 @@ abstract class BookmarkFormatter
      */
     protected function formatTagString($bookmark)
     {
-        return implode(' ', $this->formatTagList($bookmark));
+        return implode($this->conf->get('general.tags_separator', ' '), $this->formatTagList($bookmark));
     }
 
     /**
@@ -214,9 +277,9 @@ abstract class BookmarkFormatter
      *
      * @return string formatted TagString
      */
-    protected function formatUrlEncodedTagString($bookmark)
+    protected function formatTagStringUrlEncoded($bookmark)
     {
-        return implode(' ', $this->formatUrlEncodedTagList($bookmark));
+        return implode(' ', $this->formatTagListUrlEncoded($bookmark));
     }
 
     /**
@@ -237,7 +300,7 @@ abstract class BookmarkFormatter
      *
      * @param Bookmark $bookmark instance
      *
-     * @return DateTime instance
+     * @return DateTimeInterface instance
      */
     protected function formatCreated(Bookmark $bookmark)
     {
@@ -249,7 +312,7 @@ abstract class BookmarkFormatter
      *
      * @param Bookmark $bookmark instance
      *
-     * @return DateTime instance
+     * @return DateTimeInterface instance
      */
     protected function formatUpdated(Bookmark $bookmark)
     {
@@ -288,6 +351,7 @@ abstract class BookmarkFormatter
 
     /**
      * Format tag list, e.g. remove private tags if the user is not logged in.
+     * TODO: this method is called multiple time to format tags, the result should be cached.
      *
      * @param array $tags
      *
diff --git a/application/formatter/BookmarkMarkdownExtraFormatter.php b/application/formatter/BookmarkMarkdownExtraFormatter.php
new file mode 100644
index 00000000..0694b23f
--- /dev/null
+++ b/application/formatter/BookmarkMarkdownExtraFormatter.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace Shaarli\Formatter;
+
+use Shaarli\Config\ConfigManager;
+
+/**
+ * Class BookmarkMarkdownExtraFormatter
+ *
+ * Format bookmark description into MarkdownExtra format.
+ *
+ * @see https://michelf.ca/projects/php-markdown/extra/
+ *
+ * @package Shaarli\Formatter
+ */
+class BookmarkMarkdownExtraFormatter extends BookmarkMarkdownFormatter
+{
+    public function __construct(ConfigManager $conf, bool $isLoggedIn)
+    {
+        parent::__construct($conf, $isLoggedIn);
+
+        $this->parsedown = new \ParsedownExtra();
+    }
+}
diff --git a/application/formatter/BookmarkMarkdownFormatter.php b/application/formatter/BookmarkMarkdownFormatter.php
index 5d244d4c..ee4e8dca 100644
--- a/application/formatter/BookmarkMarkdownFormatter.php
+++ b/application/formatter/BookmarkMarkdownFormatter.php
@@ -16,7 +16,7 @@ class BookmarkMarkdownFormatter extends BookmarkDefaultFormatter
     /**
      * When this tag is present in a bookmark, its description should not be processed with Markdown
      */
-    const NO_MD_TAG = 'nomarkdown';
+    public const NO_MD_TAG = 'nomarkdown';
 
     /** @var \Parsedown instance */
     protected $parsedown;
@@ -56,7 +56,10 @@ class BookmarkMarkdownFormatter extends BookmarkDefaultFormatter
             return parent::formatDescription($bookmark);
         }
 
-        $processedDescription = $bookmark->getDescription();
+        $processedDescription = $this->tokenizeSearchHighlightField(
+            $bookmark->getDescription() ?? '',
+            $bookmark->getAdditionalContentEntry('search_highlight')['description'] ?? []
+        );
         $processedDescription = $this->filterProtocols($processedDescription);
         $processedDescription = $this->formatHashTags($processedDescription);
         $processedDescription = $this->reverseEscapedHtml($processedDescription);
@@ -65,9 +68,10 @@ class BookmarkMarkdownFormatter extends BookmarkDefaultFormatter
             ->setBreaksEnabled(true)
             ->text($processedDescription);
         $processedDescription = $this->sanitizeHtml($processedDescription);
+        $processedDescription = $this->replaceTokens($processedDescription);
 
         if (!empty($processedDescription)) {
-            $processedDescription = '<div class="markdown">'. $processedDescription . '</div>';
+            $processedDescription = '<div class="markdown">' . $processedDescription . '</div>';
         }
 
         return $processedDescription;
@@ -106,7 +110,7 @@ class BookmarkMarkdownFormatter extends BookmarkDefaultFormatter
             function ($match) use ($allowedProtocols, $indexUrl) {
                 $link = startsWith($match[1], '?') || startsWith($match[1], '/') ? $indexUrl : '';
                 $link .= whitelist_protocols($match[1], $allowedProtocols);
-                return ']('. $link.')';
+                return '](' . $link . ')';
             },
             $description
         );
@@ -133,7 +137,7 @@ class BookmarkMarkdownFormatter extends BookmarkDefaultFormatter
          * \p{Mn} - any non marking space (accents, umlauts, etc)
          */
         $regex = '/(^|\s)#([\p{Pc}\p{N}\p{L}\p{Mn}]+)/mui';
-        $replacement = '$1[#$2]('. $indexUrl .'./add-tag/$2)';
+        $replacement = '$1[#$2](' . $indexUrl . './add-tag/$2)';
 
         $descriptionLines = explode(PHP_EOL, $description);
         $descriptionOut = '';
@@ -174,17 +178,17 @@ class BookmarkMarkdownFormatter extends BookmarkDefaultFormatter
      */
     protected function sanitizeHtml($description)
     {
-        $escapeTags = array(
+        $escapeTags = [
             'script',
             'style',
             'link',
             'iframe',
             'frameset',
             'frame',
-        );
+        ];
         foreach ($escapeTags as $tag) {
             $description = preg_replace_callback(
-                '#<\s*'. $tag .'[^>]*>(.*</\s*'. $tag .'[^>]*>)?#is',
+                '#<\s*' . $tag . '[^>]*>(.*</\s*' . $tag . '[^>]*>)?#is',
                 function ($match) {
                     return escape($match[0]);
                 },
diff --git a/application/formatter/BookmarkRawFormatter.php b/application/formatter/BookmarkRawFormatter.php
index bc372273..4ff07cdf 100644
--- a/application/formatter/BookmarkRawFormatter.php
+++ b/application/formatter/BookmarkRawFormatter.php
@@ -10,4 +10,6 @@ namespace Shaarli\Formatter;
  *
  * @package Shaarli\Formatter
  */
-class BookmarkRawFormatter extends BookmarkFormatter {}
+class BookmarkRawFormatter extends BookmarkFormatter
+{
+}
diff --git a/application/formatter/FormatterFactory.php b/application/formatter/FormatterFactory.php
index a029579f..bb865aed 100644
--- a/application/formatter/FormatterFactory.php
+++ b/application/formatter/FormatterFactory.php
@@ -41,7 +41,7 @@ class FormatterFactory
     public function getFormatter(string $type = null): BookmarkFormatter
     {
         $type = $type ? $type : $this->conf->get('formatter', 'default');
-        $className = '\\Shaarli\\Formatter\\Bookmark'. ucfirst($type) .'Formatter';
+        $className = '\\Shaarli\\Formatter\\Bookmark' . ucfirst($type) . 'Formatter';
         if (!class_exists($className)) {
             $className = '\\Shaarli\\Formatter\\BookmarkDefaultFormatter';
         }