fix PHP-7.3 compat

[mdref/mdref] / mdref / Reference.php

diff --git a/mdref/Reference.php b/mdref/Reference.php
index 7c22dba37fee16e9b9b4cfd7b90746b892ced4fb..561bd1e2e8515f56890d7442deb2a95c23ce7c80 100644 (file)
--- a/mdref/Reference.php
+++ b/mdref/Reference.php
@@ -2,16 +2,22 @@
 
 namespace mdref;
 
+use ArrayIterator;
+use Iterator;
+use IteratorAggregate;
+use function is_numeric;
+use function preg_replace;
+
 /**
  * The complete available reference
  */
-class Reference implements \IteratorAggregate {
+class Reference implements IteratorAggregate {
        /**
         * List of mdref repositories
-        * @var array
+        * @var Repo[]
         */
        private $repos = array();
-       
+
        /**
         * @param array $refs list of mdref repository paths
         */
@@ -21,41 +27,78 @@ class Reference implements \IteratorAggregate {
                        $this->repos[$repo->getName()] = $repo;
                }
        }
-       
+
        /**
         * Lookup the repo containing a ref entry
         * @param string $entry requested reference entry, e.g. "pq/Connection/exec"
-        * @param type $canonical
+        * @param string $canonical
         * @return \mdref\Repo|NULL
         */
-       public function getRepoForEntry($entry, &$canonical = null) {
+       public function getRepoForEntry(string $entry, string &$canonical = null) : ?Repo {
                foreach ($this->repos as $repo) {
+                       /** @var $repo Repo */
                        if ($repo->hasEntry($entry, $canonical)) {
                                return $repo;
                        }
                }
+               return null;
        }
-       
+
        /**
-        * Implements \IteratorAggregate
-        * @return \ArrayIterator repository list
+        * Implements IteratorAggregate
+        * @return ArrayIterator repository list
         */
-       public function getIterator() {
-               return new \ArrayIterator($this->repos);
+       public function getIterator() : Iterator {
+               return new ArrayIterator($this->repos);
+       }
+
+       /**
+        * @param string $anchor
+        * @return string
+        */
+       public function formatAnchor(string $anchor) : string {
+               if (is_numeric($anchor)) {
+                       return "L$anchor";
+               }
+               return preg_replace("/[^[:alnum:]\.:_]/", ".", $anchor);
        }
 
-       public function formatString($string) {
-               $md = \MarkdownDocument::createFromString($string);
-               $md->compile(\MarkdownDocument::AUTOLINK);
-               return $md->getHtml();
+       /**
+        * @param string $string
+        * @return string
+        * @throws \Exception
+        */
+       public function formatString(string $string) : string {
+               if (extension_loaded("discount")) {
+                       $md = \MarkdownDocument::createFromString($string);
+                       $md->compile(\MarkdownDocument::AUTOLINK);
+                       return $md->getHtml();
+               }
+               if (extension_loaded("cmark")) {
+                       $node = \CommonMark\Parse($string);
+                       return \CommonMark\Render\HTML($node);
+               }
+               throw new \Exception("No Markdown implementation found");
        }
-       
-       public function formatFile($file) {
-               $fd = fopen($file, "r");
-               $md = \MarkdownDocument::createFromStream($fd);
-               $md->compile(\MarkdownDocument::AUTOLINK | \MarkdownDocument::TOC);
-               $html = $md->getHtml();
-               fclose($fd);
-               return $html;
+
+       /**
+        * @param string $file
+        * @return string
+        * @throws \Exception
+        */
+       public function formatFile(string $file) : string {
+               if (extension_loaded("discount")) {
+                       $fd = fopen($file, "r");
+                       $md = \MarkdownDocument::createFromStream($fd);
+                       $md->compile(\MarkdownDocument::AUTOLINK | \MarkdownDocument::TOC);
+                       $html = $md->getHtml();
+                       fclose($fd);
+                       return $html;
+               }
+               if (extension_loaded("cmark")) {
+                       $node = \CommonMark\Parse(file_get_contents($file));
+                       return \CommonMark\Render\HTML($node);
+               }
+               throw new \Exception("No Markdown implementation found");
        }
 }