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* this work for additional information regarding copyright ownership.
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* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.poi.ss.util;
import java.io.File;
import java.io.FileOutputStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import java.util.Locale;
import junit.framework.TestCase;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.DataFormat;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.util.TempFile;
public final class TestDateFormatConverter extends TestCase {
private void outputLocaleDataFormats( Date date, boolean dates, boolean times, int style, String styleName ) throws Exception {
Workbook workbook = new HSSFWorkbook();
try {
String sheetName;
if( dates ) {
if( times ) {
sheetName = "DateTimes";
} else {
sheetName = "Dates";
}
} else {
sheetName = "Times";
}
Sheet sheet = workbook.createSheet(sheetName);
Row header = sheet.createRow(0);
header.createCell(0).setCellValue("locale");
header.createCell(1).setCellValue("DisplayName");
header.createCell(2).setCellValue("Excel " + styleName);
header.createCell(3).setCellValue("java.text.DateFormat");
header.createCell(4).setCellValue("Equals");
header.createCell(5).setCellValue("Java pattern");
header.createCell(6).setCellValue("Excel pattern");
int rowNum = 1;
for( Locale locale : DateFormat.getAvailableLocales() ) {
try {
Row row = sheet.createRow(rowNum++);
row.createCell(0).setCellValue(locale.toString());
row.createCell(1).setCellValue(locale.getDisplayName(Locale.ROOT));
DateFormat dateFormat;
if( dates ) {
if( times ) {
dateFormat = DateFormat.getDateTimeInstance(style, style, locale);
} else {
dateFormat = DateFormat.getDateInstance(style, locale);
}
} else {
dateFormat = DateFormat.getTimeInstance(style, locale);
}
Cell cell = row.createCell(2);
cell.setCellValue(date);
CellStyle cellStyle = row.getSheet().getWorkbook().createCellStyle();
String javaDateFormatPattern = ((SimpleDateFormat)dateFormat).toPattern();
String excelFormatPattern = DateFormatConverter.convert(locale, javaDateFormatPattern);
DataFormat poiFormat = row.getSheet().getWorkbook().createDataFormat();
cellStyle.setDataFormat(poiFormat.getFormat(excelFormatPattern));
row.createCell(3).setCellValue(dateFormat.format(date));
cell.setCellStyle(cellStyle);
// the formula returns TRUE is the formatted date in column C equals to the string in column D
row.createCell(4).setCellFormula("TEXT(C"+rowNum+",G"+rowNum+")=D" + rowNum);
row.createCell(5).setCellValue(javaDateFormatPattern);
row.createCell(6).setCellValue(excelFormatPattern);
} catch (Exception e) {
throw new RuntimeException("Failed for locale: " + locale + ", having locales: " +
Arrays.toString(DateFormat.getAvailableLocales()), e);
}
}
File outputFile = TempFile.createTempFile("Locale" + sheetName + styleName, ".xlsx");
FileOutputStream outputStream = new FileOutputStream(outputFile);
try {
workbook.write(outputStream);
} finally {
outputStream.close();
}
System.out.println("Open " + outputFile.getAbsolutePath()+" in Excel");
} finally {
workbook.close();
}
}
public void testJavaDateFormatsInExcel() throws Exception {
Date date = new Date();
outputLocaleDataFormats(date, true, false, DateFormat.DEFAULT, "Default" );
outputLocaleDataFormats(date, true, false, DateFormat.SHORT, "Short" );
outputLocaleDataFormats(date, true, false, DateFormat.MEDIUM, "Medium" );
outputLocaleDataFormats(date, true, false, DateFormat.LONG, "Long" );
outputLocaleDataFormats(date, true, false, DateFormat.FULL, "Full" );
outputLocaleDataFormats(date, true, true, DateFormat.DEFAULT, "Default" );
outputLocaleDataFormats(date, true, true, DateFormat.SHORT, "Short" );
outputLocaleDataFormats(date, true, true, DateFormat.MEDIUM, "Medium" );
outputLocaleDataFormats(date, true, true, DateFormat.LONG, "Long" );
outputLocaleDataFormats(date, true, true, DateFormat.FULL, "Full" );
outputLocaleDataFormats(date, false, true, DateFormat.DEFAULT, "Default" );
outputLocaleDataFormats(date, false, true, DateFormat.SHORT, "Short" );
outputLocaleDataFormats(date, false, true, DateFormat.MEDIUM, "Medium" );
outputLocaleDataFormats(date, false, true, DateFormat.LONG, "Long" );
outputLocaleDataFormats(date, false, true, DateFormat.FULL, "Full" );
}
public void testJDK8EmptyLocale() {
// JDK 8 seems to add an empty locale-string to the list returned via DateFormat.getAvailableLocales()
// therefore we now cater for this special locale as well
DateFormatConverter.getPrefixForLocale(new Locale(""));
}
}