Static public is public static

[friendica.git] / include / bb2diaspora.php

diff --git a/include/bb2diaspora.php b/include/bb2diaspora.php
index 95e2365248e6da095e54c2ef6393c979de6fab3f..20309b9d2000591fe3ee86196b39f0d8ca98df85 100644 (file)
--- a/include/bb2diaspora.php
+++ b/include/bb2diaspora.php
@@ -1,11 +1,16 @@
 <?php
 
+use Friendica\App;
+use Friendica\Core\System;
+use Friendica\Network\Probe;
+
+use League\HTMLToMarkdown\HtmlConverter;
+
 require_once 'include/oembed.php';
 require_once 'include/event.php';
 require_once 'library/markdown.php';
 require_once 'include/html2bbcode.php';
 require_once 'include/bbcode.php';
-require_once 'library/html-to-markdown/HTML_To_Markdown.php';
 
 /**
  * @brief Callback function to replace a Diaspora style mention in a mention for Friendica
@@ -105,8 +110,18 @@ function diaspora_mentions($match) {
        return $mention;
 }
 
+/**
+ * @brief Converts a BBCode text into Markdown
+ *
+ * This function converts a BBCode item body to be sent to Markdown-enabled
+ * systems like Diaspora and Libertree
+ *
+ * @param string $Text
+ * @param bool $preserve_nl Effects unclear, unused in Friendica
+ * @param bool $fordiaspora Diaspora requires more changes than Libertree
+ * @return string
+ */
 function bb2diaspora($Text, $preserve_nl = false, $fordiaspora = true) {
-
        $a = get_app();
 
        $OriginalText = $Text;
@@ -120,13 +135,27 @@ function bb2diaspora($Text, $preserve_nl = false, $fordiaspora = true) {
         * Transform #tags, strip off the [url] and replace spaces with underscore
         */
        $URLSearchString = "^\[\]";
-       $Text = preg_replace_callback("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/i", create_function('$match',
-               'return \'#\'. str_replace(\' \', \'_\', $match[2]);'
-       ), $Text);
+       $Text = preg_replace_callback("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/i",
+               function ($matches) {
+                       return '#' . str_replace(' ', '_', $matches[2]);
+               }
+       , $Text);
 
        // Converting images with size parameters to simple images. Markdown doesn't know it.
        $Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $Text);
 
+       // Extracting multi-line code blocks before the whitespace processing/code highlighter in bbcode()
+       $codeblocks = [];
+       $Text = preg_replace_callback('#\[code(?:=([^\]]*))?\](?=\n)(.*?)\[\/code\]#is',
+               function ($matches) use (&$codeblocks) {
+                       $return = '#codeblock-' . count($codeblocks) . '#';
+
+            $prefix = '````' . $matches[1] . PHP_EOL;
+                       $codeblocks[] = $prefix . trim($matches[2]) . PHP_EOL . '````';
+                       return $return;
+               }
+       , $Text);
+
        // Convert it to HTML - don't try oembed
        if ($fordiaspora) {
                $Text = bbcode($Text, $preserve_nl, false, 3);
@@ -136,19 +165,18 @@ function bb2diaspora($Text, $preserve_nl = false, $fordiaspora = true) {
                        $tagline = "";
                        foreach ($tags[2] as $tag) {
                                $tag = html_entity_decode($tag, ENT_QUOTES, 'UTF-8');
-                               if (!strpos(html_entity_decode($Text, ENT_QUOTES, 'UTF-8'), "#" . $tag)) {
-                                       $tagline .= "#" . $tag . " ";
+                               if (!strpos(html_entity_decode($Text, ENT_QUOTES, 'UTF-8'), '#' . $tag)) {
+                                       $tagline .= '#' . $tag . ' ';
                                }
                        }
                        $Text = $Text." ".$tagline;
                }
-
        } else {
                $Text = bbcode($Text, $preserve_nl, false, 4);
        }
 
        // mask some special HTML chars from conversation to markdown
-       $Text = str_replace(array('&lt;','&gt;','&amp;'),array('&_lt_;','&_gt_;','&_amp_;'),$Text);
+       $Text = str_replace(array('&lt;', '&gt;', '&amp;'), array('&_lt_;', '&_gt_;', '&_amp_;'), $Text);
 
        // If a link is followed by a quote then there should be a newline before it
        // Maybe we should make this newline at every time before a quote.
@@ -157,10 +185,11 @@ function bb2diaspora($Text, $preserve_nl = false, $fordiaspora = true) {
        $stamp1 = microtime(true);
 
        // Now convert HTML to Markdown
-       $Text = new HTML_To_Markdown($Text);
+       $converter = new HtmlConverter();
+       $Text = $converter->convert($Text);
 
        // unmask the special chars back to HTML
-       $Text = str_replace(array('&_lt_;','&_gt_;','&_amp_;'),array('&lt;','&gt;','&amp;'),$Text);
+       $Text = str_replace(array('&\_lt\_;', '&\_gt\_;', '&\_amp\_;'), array('&lt;', '&gt;', '&amp;'), $Text);
 
        $a->save_timestamp($stamp1, "parser");
 
@@ -176,14 +205,25 @@ function bb2diaspora($Text, $preserve_nl = false, $fordiaspora = true) {
                $Text = preg_replace_callback("/([@]\[(.*?)\])\(([$URLSearchString]*?)\)/ism", 'diaspora_mentions', $Text);
        }
 
+       // Restore code blocks
+       $Text = preg_replace_callback('/#codeblock-([0-9]+)#/iU',
+               function ($matches) use ($codeblocks) {
+            $return = '';
+            if (isset($codeblocks[intval($matches[1])])) {
+                $return = $codeblocks[$matches[1]];
+            }
+                       return $return;
+               }
+       , $Text);
+
        call_hooks('bb2diaspora',$Text);
 
        return $Text;
 }
 
 function unescape_underscores_in_links($m) {
-       $y = str_replace('\\_','_', $m[2]);
-       return '[' . $m[1] . '](' . $y . ')';
+       $y = str_replace('\\_', '_', $m[2]);
+       return('[' . $m[1] . '](' . $y . ')');
 }
 
 function format_event_diaspora($ev) {
@@ -202,7 +242,7 @@ function format_event_diaspora($ev) {
                        $ev['start'] , $bd_format ))
                        :  day_translate(datetime_convert('UTC', 'UTC',
                        $ev['start'] , $bd_format)))
-               .  '](' . App::get_baseurl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['start'])) . ")\n";
+               .  '](' . System::baseUrl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['start'])) . ")\n";
 
        if (! $ev['nofinish']) {
                $o .= t('Finishes:') . ' ' . '['
@@ -210,7 +250,7 @@ function format_event_diaspora($ev) {
                                $ev['finish'] , $bd_format ))
                                :  day_translate(datetime_convert('UTC', 'UTC',
                                $ev['finish'] , $bd_format )))
-                       . '](' . App::get_baseurl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['finish'])) . ")\n";
+                       . '](' . System::baseUrl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['finish'])) . ")\n";
        }
 
        if (strlen($ev['location'])) {