Generator/Text: allow for multi-line rule explanations

While new lines were (accidentally) being respected by the existing code, the line length count was not being reset when a new line character was encountered, causing weird line wrapping.

This has been fixed now by:
* First splitting the received text into individual lines.
* Then doing the line wrapping calculations for each line individually.

Includes:
* Reducing the code complexity by removing an `else` and using an early `continue` instead.
* Removing some duplicate function calls.

src/Generators/Text.php

@@ -75,32 +75,40 @@ protected function printTextBlock(\DOMNode $node)
         $text = str_replace('<em>', '*', $text);
         $text = str_replace('</em>', '*', $text);
 
-        $lines    = [];
-        $tempLine = '';
-        $words    = explode(' ', $text);
+        $node_lines = explode("\n", $text);
+        $lines      = [];
+
+        foreach ($node_lines as $current_line) {
+            $current_line = trim($current_line);
+            if ($current_line === '') {
+                // The text contained a blank line. Respect this.
+                $lines[] = '';
+                continue;
+            }
 
-        foreach ($words as $word) {
-            if (strlen($tempLine.$word) >= 99) {
-                if (strlen($tempLine.$word) === 99) {
-                    // Adding the extra space will push us to the edge
-                    // so we are done.
-                    $lines[]  = $tempLine.$word;
-                    $tempLine = '';
-                } else if (strlen($tempLine.$word) === 100) {
+            $tempLine   = '';
+            $words      = explode(' ', $current_line);
+
+            foreach ($words as $word) {
+                $current_length = strlen($tempLine.$word);
+                if ($current_length < 99) {
+                    $tempLine .= $word.' ';
+                    continue;
+                }
+
+                if ($current_length === 99 || $current_length === 100) {
                     // We are already at the edge, so we are done.
                     $lines[]  = $tempLine.$word;
                     $tempLine = '';
                 } else {
                     $lines[]  = rtrim($tempLine);
                     $tempLine = $word.' ';
                 }
-            } else {
-                $tempLine .= $word.' ';
-            }
-        }//end foreach
+            }//end foreach
 
-        if ($tempLine !== '') {
-            $lines[] = rtrim($tempLine);
+            if ($tempLine !== '') {
+                $lines[] = rtrim($tempLine);
+            }
         }
 
         echo implode(PHP_EOL, $lines).PHP_EOL.PHP_EOL;