Fix bug #50440 - Support evaluating formulas with newlines in them, which XSSF may have (but HSSF may not)

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1045021 13f79535-47bb-0310-9956-ffa450edef68

src/documentation/content/xdocs/status.xml

@@ -34,6 +34,7 @@
 
     <changes>
         <release version="3.8-beta1" date="2010-??-??">
+           <action dev="POI-DEVELOPERS" type="fix">50440 - Support evaluating formulas with newlines in them, which XSSF may have (but HSSF may not)</action>
            <action dev="POI-DEVELOPERS" type="add">Added inline string support to XSSF EventModel</action>
            <action dev="POI-DEVELOPERS" type="fix">50246 - Properly position GutsRecord when reading HSSF workbooks</action>
            <action dev="POI-DEVELOPERS" type="add">48539 - Added implementation for MROUND(), VAR() and VARP()</action>

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFEvaluationWorkbook.java

@@ -147,12 +147,26 @@ public final class XSSFEvaluationWorkbook implements FormulaRenderingWorkbook, E
 	public Ptg[] getFormulaTokens(EvaluationCell evalCell) {
 		XSSFCell cell = ((XSSFEvaluationCell)evalCell).getXSSFCell();
 		XSSFEvaluationWorkbook frBook = XSSFEvaluationWorkbook.create(_uBook);
-		return FormulaParser.parse(cell.getCellFormula(), frBook, FormulaType.CELL, _uBook.getSheetIndex(cell.getSheet()));
+		String formulaText = cleanXSSFFormulaText(cell.getCellFormula());
+		return FormulaParser.parse(formulaText, frBook, FormulaType.CELL, _uBook.getSheetIndex(cell.getSheet()));
 	}
 
     public UDFFinder getUDFFinder(){
         return _uBook.getUDFFinder();
     }
+    
+   /**
+    * XSSF allows certain extra textual characters in the formula that
+    *  HSSF does not. As these can't be composed down to HSSF-compatible
+    *  Ptgs, this method strips them out for us.
+    */
+   private String cleanXSSFFormulaText(String text) {
+      // Newlines are allowed in XSSF
+      text = text.replaceAll("\\n", "").replaceAll("\\r", "");
+      
+      // All done with cleaning
+      return text;
+   }
 
 	private static final class Name implements EvaluationName {
 

src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestXSSFBugs.java

@@ -602,4 +602,22 @@ public final class TestXSSFBugs extends BaseTestBugzillaIssues {
             }
         }
     }
+    
+    /**
+     * Newlines are valid characters in a formula
+     */
+    public void test50440() throws Exception {
+       Workbook wb = XSSFTestDataSamples.openSampleWorkbook("NewlineInFormulas.xlsx");
+       Sheet s = wb.getSheetAt(0);
+       Cell c = s.getRow(0).getCell(0);
+       
+       assertEquals("SUM(\n1,2\n)", c.getCellFormula());
+       assertEquals(3.0, c.getNumericCellValue());
+       
+       FormulaEvaluator formulaEvaluator = wb.getCreationHelper().createFormulaEvaluator();
+       formulaEvaluator.evaluateFormulaCell(c);
+       
+       assertEquals("SUM(\n1,2\n)", c.getCellFormula());
+       assertEquals(3.0, c.getNumericCellValue());
+    }
 }