From 5050e99777df61ab95391c380b0ba7cf11ca0f60 Mon Sep 17 00:00:00 2001
From: Sylry <Sylry@users.noreply.github.com>
Date: Wed, 16 May 2018 18:26:41 +0200
Subject: [PATCH] Add option to have differnt styles for consecutive lists.

---
 src/Converter/ListItemConverter.php | 47 +++++++++++++++++++++++++++--
 tests/HtmlConverterTest.php         |  1 +
 2 files changed, 46 insertions(+), 2 deletions(-)

diff --git a/src/Converter/ListItemConverter.php b/src/Converter/ListItemConverter.php
index f737b4e..f21bca1 100644
--- a/src/Converter/ListItemConverter.php
+++ b/src/Converter/ListItemConverter.php
@@ -13,12 +13,52 @@ class ListItemConverter implements ConverterInterface, ConfigurationAwareInterfa
      */
     protected $config;
 
+  /**
+   * @var bool
+   */
+    protected $doAlternatePrefixes = FALSE;
+
+  /**
+   * @var array
+   */
+    protected $prefixes;
+
+  /**
+   * @var array
+   */
+    protected $standardPrefixes;
+
+  /**
+   * @var array
+   */
+    protected $alternatePrefixes;
+
     /**
      * @param Configuration $config
      */
     public function setConfig(Configuration $config)
     {
         $this->config = $config;
+        $list_item_alternate = $this->config->getOption('list_item_alternate');
+        if (isset($list_item_alternate)) {
+            foreach (['standard', 'alternate'] as $item) {
+                if (!isset($list_item_alternate[$item])) {
+                   throw new \Exception("The '{$item}' property is missing in 'list_item_alternate' config of HtmlConverter.");
+                }
+                if (count($list_item_alternate[$item]) != 2) {
+                   throw new \Exception("The '{$item}' property (in 'list_item_alternate' config of HtmlConverter) should have 2 entries.");
+                }
+            }
+
+            $this->doAlternatePrefixes = TRUE;
+            $this->prefixes = $list_item_alternate['alternate'];
+            $this->standardPrefixes = $list_item_alternate['standard'];
+            $this->alternatePrefixes = $list_item_alternate['alternate'];
+        }
+        else {
+            $list_item_style = $this->config->getOption('list_item_style', '-');
+            $this->prefixes = [$list_item_style, '.'];
+        }
     }
 
     /**
@@ -42,9 +82,12 @@ public function convert(ElementInterface $element)
         if ($level > 0 && $element->getSiblingPosition() === 1) {
             $prefix = "\n";
         }
+        elseif ($level == 0 && $element->getSiblingPosition() === 1 && $this->doAlternatePrefixes) {
+          $this->prefixes = ($this->prefixes == $this->standardPrefixes) ? $this->alternatePrefixes : $this->standardPrefixes;
+        }
 
         if ($list_type === 'ul') {
-            $list_item_style = $this->config->getOption('list_item_style', '-');
+            $list_item_style = $this->prefixes[0];
             return $prefix . $list_item_style . ' ' . $value . "\n";
         }
 
@@ -54,7 +97,7 @@ public function convert(ElementInterface $element)
             $number = $element->getSiblingPosition();
         }
 
-        return $prefix . $number . '. ' . $value . "\n";
+        return $prefix . $number . $this->prefixes[1] . ' ' . $value . "\n";
     }
 
     /**
diff --git a/tests/HtmlConverterTest.php b/tests/HtmlConverterTest.php
index 24a793b..73d03d5 100644
--- a/tests/HtmlConverterTest.php
+++ b/tests/HtmlConverterTest.php
@@ -137,6 +137,7 @@ public function test_lists()
         $this->html_gives_markdown('<ol><li>   Item A</li><li>   Item B</li></ol>', "1. Item A\n2. Item B");
         $this->html_gives_markdown('<ol><li>  <h3> Item A</h3><p>Description</p></li><li>   Item B</li></ol>', "1. ###  Item A\n  \n  Description\n2. Item B");
         $this->html_gives_markdown('<ol start="120"><li>Item A</li><li>Item B</li></ol>', "120. Item A\n121. Item B");
+        $this->html_gives_markdown('<ul><li>item of first list</li><li>item of first list</li></ul><ul><li>item of second list</li></ul>', "- item of first list\n- item of first list\n\n* item of second list", array('list_item_alternate' => array('standard' => array('-', '.'), 'alternate' => array('*', ')'))));
     }
 
     public function test_nested_lists()