Error handling for filesystem reads.

routes/articles.js

@@ -8,6 +8,9 @@ function toTitleCase(str) {
 
 /* GET home page. */
 function articles(request, response) {
+  var articlesPage = `20 text/gemini\r\n\r\n# Articles by Uplink:SI\r\nList of Articles:\r\n${contents}\r\n`;
+
+  try {
     var articleList = fs.readdirSync('./articles');
     articleList.reverse();
     var contents = '';
@@ -16,21 +19,21 @@ function articles(request, response) {
       title = toTitleCase(title);
       contents += `=> /articles/${item} ${title}\r\n`;
     });
-  response.send(`20 text/gemini\r\n
-# Articles by Uplink:SI
-List of Articles:
-${contents}
-`);
+    response.send(articlesPage);
+  } catch (error) {
+    response.error(51);
+  }
+  
 }
 
 function articles_item(request, response) {
+  try {
     var article = fs.readFileSync('./articles/' + request.params.item);
-  response.send(`20 text/gemini\r\n
-${article}
-
-=> /articles/ 📓Articles
-=> / 🏡Home
-`);
+    var articlePage = `20 text/gemini\r\n\r\n${article}\r\n\r\n=> /articles/ 📓Articles\r\n=> / 🏡Home\r\n`
+    response.send(articlePage);
+  } catch (error) {
+    response.error(51);
+  }  
 }
     
 module.exports.articles = articles;