From eb7b71ffdfe245b229e8345f9c918e88126b54e6 Mon Sep 17 00:00:00 2001
From: Kazuyuki Hayashi <hayashi@valnur.net>
Date: Tue, 12 Nov 2013 15:09:00 +0900
Subject: [PATCH] Add ability to modify url before rendering using custom
 renderer.

---
 src/Ciconia/Extension/Core/LinkExtension.php | 48 ++++++++++++++++----
 src/Ciconia/Renderer/HtmlRenderer.php        | 26 +++++++++++
 src/Ciconia/Renderer/RendererInterface.php   |  8 ++++
 3 files changed, 72 insertions(+), 10 deletions(-)

diff --git a/src/Ciconia/Extension/Core/LinkExtension.php b/src/Ciconia/Extension/Core/LinkExtension.php
index 97ef2ac..9234e12 100644
--- a/src/Ciconia/Extension/Core/LinkExtension.php
+++ b/src/Ciconia/Extension/Core/LinkExtension.php
@@ -110,13 +110,25 @@ public function processReferencedLink(Text $text, array $options = array())
             if ($this->markdown->getUrlRegistry()->exists($id)) {
                 $url = new Text($this->markdown->getUrlRegistry()->get($id));
                 $url->escapeHtml();
-                $result = new Text("<a href=\"$url\"");
+
+                $linkOptions = [
+                    'href' => $url->getString(),
+                ];
+
                 if ($this->markdown->getTitleRegistry()->exists($id)) {
                     $title = new Text($this->markdown->getTitleRegistry()->get($id));
-                    $title->escapeHtml();
-                    $result->append(" title=\"$title\"");
+                    $linkOptions['title'] = $title->escapeHtml()->getString();
                 }
-                return $result->append(">$linkText</a>");
+
+                return $this->getRenderer()->renderLink($linkText->getString(), $linkOptions);
+
+//                $result = new Text("<a href=\"$url\"");
+//                if ($this->markdown->getTitleRegistry()->exists($id)) {
+//                    $title = new Text($this->markdown->getTitleRegistry()->get($id));
+//                    $title->escapeHtml();
+//                    $result->append(" title=\"$title\"");
+//                }
+//                return $result->append(">$linkText</a>");
             } else {
                 if ($options['strict']) {
                     throw new SyntaxError(
@@ -156,13 +168,24 @@ public function processInlineLink(Text $text)
             )
         }xs', function (Text $w, Text $whole, Text $linkText, Text $url, Text $a = null, Text $q = null, Text $title = null) {
             $url->escapeHtml();
-            $result = new Text("<a href=\"$url\"");
+
+            $linkOptions = [
+                'href' => $url->getString(),
+            ];
+
             if ($title) {
-                $title->replace('/"/', '&quot;')->escapeHtml();
-                $result->append(" title=\"$title\"");
+                $linkOptions['title'] = $title->replace('/"/', '&quot;')->escapeHtml()->getString();
             }
 
-            return $result->append(">$linkText</a>");
+            return $this->getRenderer()->renderLink($linkText, $linkOptions);
+
+//            $result = new Text("<a href=\"$url\"");
+//            if ($title) {
+//                $title->replace('/"/', '&quot;')->escapeHtml();
+//                $result->append(" title=\"$title\"");
+//            }
+//
+//            return $result->append(">$linkText</a>");
         });
     }
 
@@ -173,7 +196,11 @@ public function processInlineLink(Text $text)
      */
     public function processAutoLink(Text $text)
     {
-        $text->replace('{<((https?|ftp):[^\'">\s]+)>}', '<a '.'href="$1">$1</a>');
+        //$text->replace('{<((https?|ftp):[^\'">\s]+)>}', '<a '.'href="$1">$1</a>');
+
+        $text->replace('{<((https?|ftp):[^\'">\s]+)>}', function (Text $w, Text $url) {
+            return $this->getRenderer()->renderLink($url, ['href' => $url->getString()]);
+        });
 
         /** @noinspection PhpUnusedParameterInspection */
         $text->replace('{
@@ -212,7 +239,8 @@ function ($char) { return $char; }
             $address = $chars->join();
             $text = $chars->slice(7)->join();
 
-            return "<a"." href=\"$address\">$text</a>";
+            return $this->getRenderer()->renderLink($text, ['href' => $address]);
+            //return "<a"." href=\"$address\">$text</a>";
         });
     }
 
diff --git a/src/Ciconia/Renderer/HtmlRenderer.php b/src/Ciconia/Renderer/HtmlRenderer.php
index ff654c4..5136c35 100644
--- a/src/Ciconia/Renderer/HtmlRenderer.php
+++ b/src/Ciconia/Renderer/HtmlRenderer.php
@@ -3,6 +3,7 @@
 namespace Ciconia\Renderer;
 
 use Ciconia\Common\Tag;
+use Ciconia\Common\Text;
 use Symfony\Component\OptionsResolver\OptionsResolver;
 
 /**
@@ -61,6 +62,31 @@ public function renderCodeSpan($content, array $options = array())
         return "<code>$content</code>";
     }
 
+    /**
+     * @param string|Text $content
+     * @param array       $options
+     *
+     * @return string
+     */
+    public function renderLink($content, array $options = array())
+    {
+        $options = $this->createResolver()
+            ->setRequired(array('href'))
+            ->setDefaults(array('href' => '#', 'title' => ''))
+            ->setAllowedTypes(array('href' => 'string', 'title' => 'string'))
+            ->resolve($options);
+
+        $tag = new Tag('a');
+        $tag->setText($content);
+        $tag->setAttribute('href', $options['href']);
+
+        if ($options['title']) {
+            $tag->setAttribute('title', $options['title']);
+        }
+
+        return $tag->render();
+    }
+
     /**
      * {@inheritdoc}
      */
diff --git a/src/Ciconia/Renderer/RendererInterface.php b/src/Ciconia/Renderer/RendererInterface.php
index 8f466de..651ba91 100644
--- a/src/Ciconia/Renderer/RendererInterface.php
+++ b/src/Ciconia/Renderer/RendererInterface.php
@@ -45,6 +45,14 @@ public function renderCodeBlock($content, array $options = array());
      */
     public function renderCodeSpan($content, array $options = array());
 
+    /**
+     * @param string|Text $content
+     * @param array       $options
+     *
+     * @return string
+     */
+    public function renderLink($content, array $options = array());
+
     /**
      * @param string|Text $content
      * @param array       $options