Show broken links in red, external link with an arrow. fixes #395

libs/Config.php

@@ -88,6 +88,16 @@ class Config extends ArrayObject
         return array_key_exists('languages', $this) && !empty($this['languages']);
     }
 
+    public function isLive()
+    {
+        return $this['mode'] == Daux::LIVE_MODE;
+    }
+
+    public function isStatic()
+    {
+        return $this['mode'] == Daux::STATIC_MODE;
+    }
+
     public function shouldInheritIndex()
     {
         // As the global configuration is always present, we

libs/ContentTypes/Markdown/LinkRenderer.php

@@ -6,7 +6,7 @@ use League\CommonMark\Inline\Element\AbstractInline;
 use League\CommonMark\Inline\Element\Link;
 use Todaymade\Daux\Config;
 use Todaymade\Daux\DauxHelper;
-use Todaymade\Daux\Exception;
+use Todaymade\Daux\Exception\LinkNotFoundException;
 use Todaymade\Daux\Tree\Entry;
 
 class LinkRenderer extends \League\CommonMark\Inline\Renderer\LinkRenderer
@@ -24,7 +24,7 @@ class LinkRenderer extends \League\CommonMark\Inline\Renderer\LinkRenderer
     /**
      * @param string $url
      * @return Entry
-     * @throws Exception
+     * @throws LinkNotFoundException
      */
     protected function resolveInternalFile($url)
     {
@@ -55,14 +55,14 @@ class LinkRenderer extends \League\CommonMark\Inline\Renderer\LinkRenderer
             return $file;
         }
 
-        throw new Exception("Could not locate file '$url'");
+        throw new LinkNotFoundException("Could not locate file '$url'");
     }
 
     /**
      * @param AbstractInline|Link $inline
      * @param ElementRendererInterface $htmlRenderer
      * @return HtmlElement
-     * @throws Exception
+     * @throws LinkNotFoundException
      */
     public function render(AbstractInline $inline, ElementRendererInterface $htmlRenderer)
     {
@@ -81,15 +81,28 @@ class LinkRenderer extends \League\CommonMark\Inline\Renderer\LinkRenderer
 
         $url = $inline->getUrl();
 
-        // Absolute urls, empty urls and anchors
-        // should not go through the url resolver
-        if (empty($url) || $url[0] == '#' || preg_match('|^(?:[a-z]+:)?//|', $url)) {
+        // empty urls and anchors should
+        // not go through the url resolver
+        if (empty($url) || $url[0] == '#') {
             return $element;
         }
 
-        $file = $this->resolveInternalFile($url);
+        // Absolute urls, shouldn't either
+        if (preg_match('|^(?:[a-z]+:)?//|', $url)) {
+            $element->setAttribute('class', 'external');
+            return $element;
+        }
 
+        try {
+            $file = $this->resolveInternalFile($url);
             $url = DauxHelper::getRelativePath($this->daux->getCurrentPage()->getUrl(), $file->getUrl());
+        } catch(LinkNotFoundException $e) {
+            if ($this->daux->isStatic()) {
+                throw $e;
+            }
+
+            $element->setAttribute('class', 'broken');
+        }
 
         $element->setAttribute('href', $url);
 

libs/Exception/LinkNotFoundException.php

@@ -0,0 +1,5 @@
+<?php namespace Todaymade\Daux\Exception;
+
+class LinkNotFoundException extends \Todaymade\Daux\Exception
+{
+}

libs/Tree/Builder.php

@@ -110,7 +110,7 @@ class Builder
         }
 
         $uri = static::removeSortingInformations($name);
-        if ($config['mode'] === Daux::STATIC_MODE) {
+        if ($config->isStatic()) {
             $uri .= '.html';
         }
 
@@ -184,7 +184,7 @@ class Builder
         if (!$raw) {
             $title = static::getName($path);
             $uri = DauxHelper::slug($title);
-            if ($parent->getConfig()['mode'] === Daux::STATIC_MODE) {
+            if ($parent->getConfig()->isStatic()) {
                 $uri .= '.html';
             }
         }

themes/common/less/_typography.less

@@ -106,6 +106,7 @@ blockquote {
 table {
     width: 100%;
     padding: 0;
+    border-collapse: collapse;
 
     tr {
         border-top: 1px solid #eee;

themes/daux/less/_components.less

@@ -5,6 +5,14 @@ Base tags
 a {
     text-decoration: none;
     color: @light;
+
+    &.external::after {
+        content: " " url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAVklEQVR4Xn3PgQkAMQhDUXfqTu7kTtkpd5RA8AInfArtQ2iRXFWT2QedAfttj2FsPIOE1eCOlEuoWWjgzYaB/IkeGOrxXhqB+uA9Bfcm0lAZuh+YIeAD+cAqSz4kCMUAAAAASUVORK5CYII=);
+    }
+
+    &.broken {
+        color: red;
+    }
 }
 
 p {