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Posted to commits@poi.apache.org by ni...@apache.org on 2011/12/20 07:58:01 UTC

svn commit: r1221123 - in /poi/trunk/src: documentation/content/xdocs/status.xml java/org/apache/poi/ss/formula/functions/TextFunction.java testcases/org/apache/poi/ss/formula/functions/TestText.java

Author: nick
Date: Tue Dec 20 06:58:01 2011
New Revision: 1221123

URL: http://svn.apache.org/viewvc?rev=1221123&view=rev
Log:
Fix bug #52349 - Correctly support excel style date format strings in the TEXT function

Modified:
    poi/trunk/src/documentation/content/xdocs/status.xml
    poi/trunk/src/java/org/apache/poi/ss/formula/functions/TextFunction.java
    poi/trunk/src/testcases/org/apache/poi/ss/formula/functions/TestText.java

Modified: poi/trunk/src/documentation/content/xdocs/status.xml
URL: http://svn.apache.org/viewvc/poi/trunk/src/documentation/content/xdocs/status.xml?rev=1221123&r1=1221122&r2=1221123&view=diff
==============================================================================
--- poi/trunk/src/documentation/content/xdocs/status.xml (original)
+++ poi/trunk/src/documentation/content/xdocs/status.xml Tue Dec 20 06:58:01 2011
@@ -34,6 +34,7 @@
 
     <changes>
         <release version="3.8-beta6" date="2012-??-??">
+           <action dev="poi-developers" type="fix">52349 - Correctly support excel style date format strings in the TEXT function</action>
            <action dev="poi-developers" type="fix">52369 - XSSFExcelExtractor should format numeric cells based on the format strings applied to them</action>
            <action dev="poi-developers" type="fix">52369 - Event based XSSF parsing should handle formatting of formula values in XSSFSheetXMLHandler</action>
            <action dev="poi-developers" type="fix">52348 - Avoid exception when creating cell style in a workbook that has an empty xf table</action>

Modified: poi/trunk/src/java/org/apache/poi/ss/formula/functions/TextFunction.java
URL: http://svn.apache.org/viewvc/poi/trunk/src/java/org/apache/poi/ss/formula/functions/TextFunction.java?rev=1221123&r1=1221122&r2=1221123&view=diff
==============================================================================
--- poi/trunk/src/java/org/apache/poi/ss/formula/functions/TextFunction.java (original)
+++ poi/trunk/src/java/org/apache/poi/ss/formula/functions/TextFunction.java Tue Dec 20 06:58:01 2011
@@ -30,6 +30,7 @@ import org.apache.poi.ss.formula.eval.Nu
 import org.apache.poi.ss.formula.eval.OperandResolver;
 import org.apache.poi.ss.formula.eval.StringEval;
 import org.apache.poi.ss.formula.eval.ValueEval;
+import org.apache.poi.ss.usermodel.DataFormatter;
 
 /**
  * @author Amol S. Deshmukh &lt; amolweb at ya hoo dot com &gt;
@@ -37,8 +38,8 @@ import org.apache.poi.ss.formula.eval.Va
  * @author Stephen Wolke (smwolke at geistig.com)
  */
 public abstract class TextFunction implements Function {
-
-	protected static final String EMPTY_STRING = "";
+	protected static final DataFormatter formatter = new DataFormatter();
+   protected static final String EMPTY_STRING = "";
 
 	protected static final String evaluateStringArg(ValueEval eval, int srcRow, int srcCol) throws EvaluationException {
 		ValueEval ve = OperandResolver.getSingleValue(eval, srcRow, srcCol);
@@ -281,8 +282,11 @@ public abstract class TextFunction imple
 	 * TEXT returns a number value formatted with the given
 	 * number formatting string. This function is not a complete implementation of
 	 * the Excel function.  This function implements decimal formatting
-	 * with the Java class DecimalFormat.  For date formatting this function uses
-	 * the SimpleDateFormat class.<p/>
+	 * with the Java class DecimalFormat.  For date formatting, this function uses
+	 * {@link DataFormatter}, which attempts to replicate the Excel date 
+	 * format string.
+	 * 
+	 * TODO Merge much of this logic with {@link DataFormatter}
 	 *
 	 * <b>Syntax<b>:<br/> <b>TEXT</b>(<b>value</b>, <b>format_text</b>)<br/>
 	 *
@@ -343,12 +347,9 @@ public abstract class TextFunction imple
 				}
 			} else {
 				try {
-					DateFormat dateFormatter = new SimpleDateFormat(s1);
-					Calendar cal = new GregorianCalendar(1899, 11, 30, 0, 0, 0);
-					cal.add(Calendar.DATE, (int)Math.floor(s0));
-					double dayFraction = s0 - Math.floor(s0);
-					cal.add(Calendar.MILLISECOND, (int) Math.round(dayFraction * 24 * 60 * 60 * 1000));
-					return new StringEval(dateFormatter.format(cal.getTime()));
+	            // Ask DataFormatter to handle the Date string for us
+				   String formattedDate = formatter.formatRawCellContents(s0, -1, s1);
+					return new StringEval(formattedDate);
 				} catch (Exception e) {
 					return ErrorEval.VALUE_INVALID;
 				}

Modified: poi/trunk/src/testcases/org/apache/poi/ss/formula/functions/TestText.java
URL: http://svn.apache.org/viewvc/poi/trunk/src/testcases/org/apache/poi/ss/formula/functions/TestText.java?rev=1221123&r1=1221122&r2=1221123&view=diff
==============================================================================
--- poi/trunk/src/testcases/org/apache/poi/ss/formula/functions/TestText.java (original)
+++ poi/trunk/src/testcases/org/apache/poi/ss/formula/functions/TestText.java Tue Dec 20 06:58:01 2011
@@ -92,22 +92,37 @@ public final class TestText extends Test
 		assertEquals(testResult.toString(), result.toString());
 	}
 
-	public void testTextWithDateFormatSecondArg() {
+   public void testTextWithDateFormatSecondArg() {
+      // Test with Java style M=Month
+      ValueEval numArg = new NumberEval(321.321);
+      ValueEval formatArg = new StringEval("dd:MM:yyyy hh:mm:ss");
+      ValueEval[] args = { numArg, formatArg };
+      ValueEval result = T.TEXT.evaluate(args, -1, (short)-1);
+      ValueEval testResult = new StringEval("16:11:1900 07:42:14");
+      assertEquals(testResult.toString(), result.toString());
 
-		ValueEval numArg = new NumberEval(321.321);
-		ValueEval formatArg = new StringEval("dd:MM:yyyy hh:mm:ss");
-		ValueEval[] args = { numArg, formatArg };
-		ValueEval result = T.TEXT.evaluate(args, -1, (short)-1);
-		ValueEval testResult = new StringEval("16:11:1900 07:42:14");
-		assertEquals(testResult.toString(), result.toString());
+      // Excel also supports "m before h is month"
+      formatArg = new StringEval("dd:mm:yyyy hh:mm:ss");
+      args[1] = formatArg;
+      result = T.TEXT.evaluate(args, -1, (short)-1);
+      testResult = new StringEval("16:11:1900 07:42:14");
+      assertEquals(testResult.toString(), result.toString());
 
-		// this line is intended to compute how "November" would look like in the current locale
-		String november = new SimpleDateFormat("MMMM").format(new GregorianCalendar(2010,10,15).getTime());
+      // this line is intended to compute how "November" would look like in the current locale
+      String november = new SimpleDateFormat("MMMM").format(new GregorianCalendar(2010,10,15).getTime());
 
-		formatArg = new StringEval("MMMM dd, yyyy");
-		args[1] = formatArg;
-		result = T.TEXT.evaluate(args, -1, (short)-1);
-		testResult = new StringEval(november + " 16, 1900");
-		assertEquals(testResult.toString(), result.toString());
-	}
+      // Again with Java style
+      formatArg = new StringEval("MMMM dd, yyyy");
+      args[1] = formatArg;
+      result = T.TEXT.evaluate(args, -1, (short)-1);
+      testResult = new StringEval(november + " 16, 1900");
+      assertEquals(testResult.toString(), result.toString());
+
+      // And Excel style
+      formatArg = new StringEval("mmmm dd, yyyy");
+      args[1] = formatArg;
+      result = T.TEXT.evaluate(args, -1, (short)-1);
+      testResult = new StringEval(november + " 16, 1900");
+      assertEquals(testResult.toString(), result.toString());
+   }
 }



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