Html cellwrapping (#1075)

* When <br> appears in a table cell, set the cell to wrap.

If the cell is not set to wrap, it appears as a single line when first
displayed in Excel, although editing the cell will cause Excel to wrap
it.

* fix whitespace

Upstream has a coding standard that includes whitespace

* Add Unit tests for cell wrapping

* Update changelog

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org).
 
 ## [Unreleased]
 
+### Added
+
+- When <br> appears in a table cell, set the cell to wrap [Issue #1071](https://github.com/PHPOffice/PhpSpreadsheet/issues/1071) and [PR #1070](https://github.com/PHPOffice/PhpSpreadsheet/pull/1070)
+
 ### Fixed
 
 - COUPNUM should not return zero when settlement is in the last period - [Issue #1020](https://github.com/PHPOffice/PhpSpreadsheet/issues/1020) and [PR #1021](https://github.com/PHPOffice/PhpSpreadsheet/pull/1021)

src/PhpSpreadsheet/Reader/Html.php

@@ -374,8 +374,9 @@ protected function processDomElement(DOMNode $element, Worksheet $sheet, &$row,
                         // no break
                     case 'br':
                         if ($this->tableLevel > 0) {
-                            //    If we're inside a table, replace with a \n
+                            //    If we're inside a table, replace with a \n and set the cell to wrap
                             $cellContent .= "\n";
+                            $sheet->getStyle($column . $row)->getAlignment()->setWrapText(true);
                         } else {
                             //    Otherwise flush our existing content and move the row cursor on
                             $this->flushCell($sheet, $column, $row, $cellContent);

tests/PhpSpreadsheetTests/Reader/HtmlTest.php

@@ -266,6 +266,39 @@ public function testCanInsertImage()
         unlink($filename);
     }
 
+    public function testCanApplyCellWrapping()
+    {
+        $html = '<table>
+                    <tr>
+                        <td>Hello World</td>
+                    </tr>
+                    <tr>
+                        <td>Hello<br />World</td>
+                    </tr>
+                    <tr>
+                        <td>Hello<br>World</td>
+                    </tr>
+                </table>';
+        $filename = $this->createHtml($html);
+        $spreadsheet = $this->loadHtmlIntoSpreadsheet($filename);
+        $firstSheet = $spreadsheet->getSheet(0);
+
+        $cellStyle = $firstSheet->getStyle('A1');
+        self::assertFalse($cellStyle->getAlignment()->getWrapText());
+
+        $cellStyle = $firstSheet->getStyle('A2');
+        self::assertTrue($cellStyle->getAlignment()->getWrapText());
+        $cellValue = $firstSheet->getCell('A2')->getValue();
+        $this->assertContains("\n", $cellValue);
+
+        $cellStyle = $firstSheet->getStyle('A3');
+        self::assertTrue($cellStyle->getAlignment()->getWrapText());
+        $cellValue = $firstSheet->getCell('A3')->getValue();
+        $this->assertContains("\n", $cellValue);
+
+        unlink($filename);
+    }
+
     /**
      * @param string $html
      *