Allow rgb() When Converting Html

Fix #2508. Program currently expects `#xxxxxx` to specify a color when used by the `bgcolor` html attribute or the `color` or `background-color` css attributes. This PR allows support for `rgb(red, green, blue)` as well.

Author: oleibman

src/PhpWord/Shared/Html.php

@@ -37,6 +37,8 @@
  */
 class Html
 {
+    private const RGB_REGEXP = '/^\s*rgb\s*[(]\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*[)]\s*$/';
+
     protected static $listIndex = 0;
 
     protected static $xpath;
@@ -142,7 +144,7 @@ protected static function parseInlineStyle($node, $styles = [])
                         break;
                     case 'bgcolor':
                         // tables, rows, cells e.g. <tr bgColor="#FF0000">
-                        $styles['bgColor'] = trim($val, '# ');
+                        $styles['bgColor'] = self::convertRgb($val);
 
                         break;
                     case 'valign':
@@ -720,11 +722,11 @@ protected static function parseStyleDeclarations(array $selectors, array $styles
 
                     break;
                 case 'color':
-                    $styles['color'] = trim($value, '#');
+                    $styles['color'] = self::convertRgb($value);
 
                     break;
                 case 'background-color':
-                    $styles['bgColor'] = trim($value, '#');
+                    $styles['bgColor'] = self::convertRgb($value);
 
                     break;
                 case 'line-height':
@@ -1170,4 +1172,13 @@ protected static function parseHorizRule($node, $element): void
         // - line - that is a shape, has different behaviour
         // - repeated text, e.g. underline "_", because of unpredictable line wrapping
     }
+
+    private static function convertRgb(string $rgb): string
+    {
+        if (preg_match(self::RGB_REGEXP, $rgb, $matches) === 1) {
+            return sprintf('%02X%02X%02X', $matches[1], $matches[2], $matches[3]);
+        }
+
+        return trim($rgb, '# ');
+    }
 }

tests/PhpWordTests/Writer/Word2007/Style/FontTest.php

@@ -17,6 +17,8 @@
 
 namespace PhpOffice\PhpWordTests\Writer\Word2007\Style;
 
+use PhpOffice\PhpWord\PhpWord;
+use PhpOffice\PhpWord\Shared\Html;
 use PhpOffice\PhpWordTests\TestHelperDOCX;
 
 /**
@@ -155,4 +157,44 @@ public function testPosition(): void
         self::assertTrue($doc->elementExists($path));
         self::assertEquals(-20, $doc->getElementAttribute($path, 'w:val'));
     }
+
+    public static function testRgb(): void
+    {
+        $phpWord = new PhpWord();
+        $section = $phpWord->addSection(['pageNumberingStart' => 1]);
+        $html = implode(
+            "\n",
+            [
+                '<table>',
+                '<tbody>',
+                '<tr>',
+                '<td style="color: #A7D9C1;">This one is in color.</td>',
+                '<td style="color: rgb(167, 217, 193);">This one too.</td>',
+                '</tr>',
+                '</tbody>',
+                '</table>',
+            ]
+        );
+
+        Html::addHtml($section, $html, false, false);
+        $doc = TestHelperDOCX::getDocument($phpWord, 'Word2007');
+
+        $element = '/w:document/w:body/w:tbl/w:tr/w:tc/w:p/w:r';
+        $txtelem = $element . '/w:t';
+        $styelem = $element . '/w:rPr';
+        self::assertTrue($doc->elementExists($txtelem));
+        self::assertSame('This one is in color.', $doc->getElement($txtelem)->textContent);
+        self::assertTrue($doc->elementExists($styelem));
+        self::assertTrue($doc->elementExists($styelem . '/w:color'));
+        self::assertSame('A7D9C1', $doc->getElementAttribute($styelem . '/w:color', 'w:val'));
+
+        $element = '/w:document/w:body/w:tbl/w:tr/w:tc[2]/w:p/w:r';
+        $txtelem = $element . '/w:t';
+        $styelem = $element . '/w:rPr';
+        self::assertTrue($doc->elementExists($txtelem));
+        self::assertSame('This one too.', $doc->getElement($txtelem)->textContent);
+        self::assertTrue($doc->elementExists($styelem));
+        self::assertTrue($doc->elementExists($styelem . '/w:color'));
+        self::assertSame('A7D9C1', $doc->getElementAttribute($styelem . '/w:color', 'w:val'));
+    }
 }