Add spaceMatching setting that matches all spaces (#111)

Author: berarma

lib/Caxy/HtmlDiff/HtmlDiff.php

@@ -584,7 +584,7 @@ protected function checkCondition($word, $condition)
 
     protected function wrapText(string $text, string $tagName, string $cssClass) : string
     {
-        if (trim($text) === '') {
+        if (!$this->config->isSpaceMatching() && trim($text) === '') {
             return '';
         }
 

lib/Caxy/HtmlDiff/HtmlDiffConfig.php

@@ -77,6 +77,11 @@ class HtmlDiffConfig
      */
     protected $purifierCacheLocation = null;
 
+    /**
+     * @var bool
+     */
+    protected $spaceMatching = false;
+
     /**
      * @return HtmlDiffConfig
      */
@@ -441,6 +446,22 @@ public function getPurifierCacheLocation()
         return $this->purifierCacheLocation;
     }
 
+    /**
+     * @return bool
+     */
+    public function isSpaceMatching()
+    {
+        return $this->spaceMatching;
+    }
+
+    /**
+     * @param bool $keepNewLines
+     */
+    public function setSpaceMatching($spaceMatching)
+    {
+        $this->spaceMatching = $spaceMatching;
+    }
+
     /**
      * @param string $tag
      *

tests/fixtures/HtmlDiff/simple-list.html

@@ -1,26 +1,26 @@
 <options></options>
 
 <oldText>
-<ol><li>List item one</li>
-    <li>List item two with subitems:
-        <ul><li>Subitem 1</li>
-            <li>Subitem 2</li>
-            <li>
-                <p>
-                    Hi there<br />
-                <ul><li>B</li>
-                    <li>A</li>
-                    <li>B</li>
-                </ul>
-                </p>
-            </li>
-            <li>
-                <dl><li>Deleted list</li></dl>
-            </li>
-        </ul>
-    </li>
-    <li>Final list item</li>
-</ol>
+    <ol><li>List item one</li>
+        <li>List item two with subitems:
+            <ul><li>Subitem 1</li>
+                <li>Subitem 2</li>
+                <li>
+                    <p>
+                        Hi there<br />
+                    <ul><li>B</li>
+                        <li>A</li>
+                        <li>B</li>
+                    </ul>
+                    </p>
+                </li>
+                <li>
+                    <dl><li>Deleted list</li></dl>
+                </li>
+            </ul>
+        </li>
+        <li>Final list item</li>
+    </ol>
 </oldText>
 
 <newText>

tests/fixtures/HtmlDiff/spaces-added.html

@@ -0,0 +1,6 @@
+<options>
+    <option type="boolean" name="setSpaceMatching" value="true" />
+</options>
+<oldtext>He said:"OK!"</oldtext>
+<newtext>He said: "OK!"</newtext>
+<expected>He said:<ins class="diffins"> </ins>"OK!"</expected>

tests/fixtures/HtmlDiff/spaces-removed-inside-tag.html

@@ -0,0 +1,6 @@
+<options>
+    <option type="boolean" name="setSpaceMatching" value="true" />
+</options>
+<oldtext><strong>this </strong>is</oldtext>
+<newtext><strong>this</strong>is</newtext>
+<expected><strong>this<del class="diffdel"> </del></strong>is</expected>