From 7c375848a271cb179938e35c94fb3a18a49bf43a Mon Sep 17 00:00:00 2001
From: "David T. Sadler" <davidtsadler@googlemail.com>
Date: Mon, 10 May 2021 16:55:26 +0100
Subject: Refactor gemtext2html

---
 scripts/functions.php | 85 +++++++++++----------------------------------------
 1 file changed, 18 insertions(+), 67 deletions(-)

diff --git a/scripts/functions.php b/scripts/functions.php
index de563fc..f1f4e1e 100644
--- a/scripts/functions.php
+++ b/scripts/functions.php
@@ -158,36 +158,29 @@ function buildHtmlFile(array $fileMetaData, string $contents, string $htmlTempla
 
 function gemtext2hmtl(string $gemtext): string
 {
-    return renderGemtextTokens(parseGemtext($gemtext));
-}
-
-function parseGemtext(string $gemtext): array
-{
-    $tokens = [];
+    $html = [];
 
     $lines = preg_split('/\r?\n/', htmlspecialchars($gemtext));
 
+    $line = fn ($index) => trim($lines[$index]);
+
     $index = 0;
+
     $numLines = count($lines);
-    $line = fn($index) => trim($lines[$index]);
 
     while($index < $numLines) {
         if (preg_match(HEADER, $line($index), $matches) === 1) {
             [, $levels, $content] = $matches;
 
-            $tokens[] = [
-                'type'    => HEADER,
-                'level'   => strlen($levels),
-                'content' => $content,
-            ];
+            $level = strlen($levels);
+
+            $html[] = "<h$level>$content</h$level>";
         } elseif (preg_match(LINK, $line($index), $matches) === 1) {
             [, $href, $content] = $matches;
 
-            $tokens[] = [
-                'type'    => LINK,
-                'href'    => $href,
-                'content' => $content != '' ? $content : $href,
-            ];
+            $content = $content ?: $href;
+
+            $html[] = "<a href=\"$href\">$content</a>";
         } elseif (preg_match(LIST_ITEM, $line($index), $matches) === 1) {
             $items = [];
 
@@ -196,20 +189,14 @@ function parseGemtext(string $gemtext): array
                     break;
                 }
 
-                [, $content] = $matches;
-
-                $items[] = $content;
+                $items[] = "<li>$matches[1]</li>";
 
                 $index++;
-
             }
 
             $index--;
 
-            $tokens[] = [
-                'type'  => LIST_ITEM,
-                'items' => $items,
-            ];
+            $html[] =  sprintf("<ul>%s</ul>", implode('', $items));
         } elseif (preg_match(PRE, $line($index), $matches) === 1) {
             [, $alt] = $matches;
 
@@ -229,55 +216,19 @@ function parseGemtext(string $gemtext): array
                 $index++;
             }
 
-            $tokens[] = [
-                'type'  => PRE,
-                'alt'   => $alt,
-                'items' => $items,
-            ];
-        } elseif (preg_match(QUOTE, $line($index), $matches) === 1) {
-            [, $content] = $matches;
+            $items = implode("\n", $items);
 
-            $tokens[] = [
-                'type'    => QUOTE,
-                'content' => $content,
-            ];
+            $html[] = $alt ? "<pre><code class=\"$alt\">$items</code></pre>" : "<pre>$items</pre>";
+        } elseif (preg_match(QUOTE, $line($index), $matches) === 1) {
+            $html[] =  "<blockquote>$matches[1]</blockquote>";
         } else {
-            $tokens[] = [
-                'type'    => null,
-                'content' => $line($index),
-            ];
+            $html[] =  "<p>{$line($index)}</p>";
         }
 
         $index++;
     }
 
-    return $tokens;
-}
-
-function renderGemtextTokens(array $tokens): string
-{
-    return implode("\n", array_filter(array_map(function ($token) {
-        switch ($token['type']) {
-            case HEADER:
-                return sprintf('<h%s>%s</h%s>', $token['level'], $token['content'], $token['level']);
-            case LINK:
-                return sprintf('<a href="%s">%s</a>', $token['href'], $token['content']);
-            case LIST_ITEM:
-                return sprintf(
-                    "<ul>\n%s\n</ul>",
-                    implode("\n", array_map(function ($item) { return sprintf("<li>%s</li>", $item);}, $token['items']))
-                );
-            case PRE:
-                return $token['alt'] ?
-                    sprintf("<pre><code class=\"%s\">\n%s\n</code></pre>", $token['alt'], implode("\n", $token['items']))
-                    :
-                    sprintf("<pre>\n%s\n</pre>", $token['alt'], implode('', $token['items']));
-            case QUOTE:
-                return sprintf('<blockquote>%s</blockquote>', $token['content']);
-            default:
-                return $token['content'] !== '' ? sprintf('<p>%s</p>', $token['content']) : null;
-        }
-    }, $tokens)));
+    return implode('', $html);
 }
 
 function copyWWWAssets(string $assetsDiretory, string $output): void
-- 
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