From 675cdf3ac46f1c64993c32ec46fbea8e1eaaca02 Mon Sep 17 00:00:00 2001
From: yggverse <yggverse@bot>
Date: Fri, 12 Apr 2024 14:20:19 +0300
Subject: [PATCH] implement gemtext code format

---
 README.md     |   4 +-
 src/Pango.php | 153 ++++++++++++++++++++++++++++++++++----------------
 2 files changed, 108 insertions(+), 49 deletions(-)

diff --git a/README.md b/README.md
index a03dfcb..a38d071 100644
--- a/README.md
+++ b/README.md
@@ -221,10 +221,10 @@ $pango = \Yggverse\Gemini\Pango::fromGemtext(
 );
 ```
 
-#### Pango::fromBody
+#### Pango::fromGemtextBody
 
 ``` php
-$pango = \Yggverse\Gemini\Pango::fromBody(
+$pango = \Yggverse\Gemini\Pango::fromGemtextBody(
     new \Yggverse\Gemini\Gemtext\Body(
         $gemtext
     )
diff --git a/src/Pango.php b/src/Pango.php
index fc847b4..a3855db 100644
--- a/src/Pango.php
+++ b/src/Pango.php
@@ -10,88 +10,147 @@ class Pango
         string $gemtext
     ): string
     {
-        return self::fromBody(
+        return self::fromGemtextBody(
             new \Yggverse\Gemini\Gemtext\Body(
                 $gemtext
             )
         );
     }
 
-    public static function fromBody(
+    public static function fromGemtextBody(
         \Yggverse\Gemini\Gemtext\Body $body
     ): string
     {
         $lines = $body->getLines();
 
+        $raw = [];
+
         $escaped = [];
 
+        // Code
+        $code = $body->getCode();
+
+        if (count($code) % 2 == 0) // make sure tags has pairs
+        {
+            $i = 1;
+
+            foreach ($code as $index => $capture)
+            {
+                // Replace code tags
+                if ($i % 2 == 0)
+                {
+                    $lines[$index] = '</tt>';
+
+                    // Skip code format inside the tags by raw registry
+                    foreach (array_slice($lines, $offset, $index - $offset) as $start => $line)
+                    {
+                        $raw[$start + $offset] = $line;
+                    }
+                }
+
+                else
+                {
+                    if ($capture)
+                    {
+                        $lines[$index] = sprintf(
+                            '<b>%s</b><tt>',
+                            self::escape(
+                                $capture
+                            )
+                        );
+                    }
+
+                    else
+                    {
+                        $lines[$index] = '<tt>';
+                    }
+
+                    $offset = $index + 1;
+                }
+
+                $escaped[] = $index;
+
+                $i++;
+            }
+        }
+
         // H1
         foreach ($body->getH1() as $index => $value)
         {
-            $lines[$index] = sprintf(
-                '<span size="xx-large">%s</span>',
-                self::escape(
-                    $value
-                )
-            );
-
-            $escaped[] = $index;
+            if (!isset($raw[$index]))
+            {
+                $lines[$index] = sprintf(
+                    '<span size="xx-large">%s</span>',
+                    self::escape(
+                        $value
+                    )
+                );
+
+                $escaped[] = $index;
+            }
         }
 
         // H2
         foreach ($body->getH2() as $index => $value)
         {
-            $lines[$index] = sprintf(
-                '<span size="x-large">%s</span>',
-                self::escape(
-                    $value
-                )
-            );
-
-            $escaped[] = $index;
+            if (!isset($raw[$index]))
+            {
+                $lines[$index] = sprintf(
+                    '<span size="x-large">%s</span>',
+                    self::escape(
+                        $value
+                    )
+                );
+
+                $escaped[] = $index;
+            }
         }
 
         // H3
         foreach ($body->getH3() as $index => $value)
         {
-            $lines[$index] = sprintf(
-                '<span size="large">%s</span>',
-                self::escape(
-                    $value
-                )
-            );
-
-            $escaped[] = $index;
+            if (!isset($raw[$index]))
+            {
+                $lines[$index] = sprintf(
+                    '<span size="large">%s</span>',
+                    self::escape(
+                        $value
+                    )
+                );
+
+                $escaped[] = $index;
+            }
         }
 
-        // H3
-        foreach ($body->getH3() as $index => $value)
+        // Quote
+        foreach ($body->getQuote() as $index => $value)
         {
-            $lines[$index] = sprintf(
-                '<span size="large">%s</span>',
-                self::escape(
-                    $value
-                )
-            );
-
-            $escaped[] = $index;
+            if (!isset($raw[$index]))
+            {
+                $lines[$index] = sprintf(
+                    '<i>%s</i>',
+                    self::escape(
+                        $value
+                    )
+                );
+
+                $escaped[] = $index;
+            }
         }
 
-        // Quote
-        foreach ($body->getQuote() as $index => $value)
+        // @TODO links
+
+        // Escape special chars for non escaped lines
+        foreach ($body->getLines() as $index => $value)
         {
-            $lines[$index] = sprintf(
-                '<i>%s</i>',
-                self::escape(
+            if (!in_array($index, $escaped))
+            {
+                $lines[$index] = self::escape(
                     $value
-                )
-            );
-
-            $escaped[] = $index;
+                );
+            }
         }
 
-        // @TODO links, code
-
         return implode(
             PHP_EOL,
             $lines