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*
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package org.xlsx4j.org.apache.poi.ss.usermodel;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.text.DateFormat;
import java.text.DateFormatSymbols;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.text.FieldPosition;
import java.text.Format;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Observable;
import java.util.Observer;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.docx4j.XmlUtils;
import org.docx4j.openpackaging.parts.SpreadsheetML.Styles;
import org.docx4j.openpackaging.parts.SpreadsheetML.WorkbookPart;
import org.docx4j.openpackaging.parts.SpreadsheetML.WorksheetPart;
import org.docx4j.org.apache.poi.util.LocaleUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xlsx4j.jaxb.Context;
import org.xlsx4j.model.CellUtils;
import org.xlsx4j.org.apache.poi.ss.util.NumberToTextConverter;
import org.xlsx4j.sml.CTCellFormula;
import org.xlsx4j.sml.CTCellStyle;
import org.xlsx4j.sml.CTRElt;
import org.xlsx4j.sml.CTRst;
import org.xlsx4j.sml.CTXf;
import org.xlsx4j.sml.Cell;
import org.xlsx4j.sml.STCellFormulaType;
import org.xlsx4j.sml.STCellType;
/**
* DataFormatter contains methods for formatting the value stored in an
* Cell. This can be useful for reports and GUI presentations when you
* need to display data exactly as it appears in Excel. Supported formats
* include currency, SSN, percentages, decimals, dates, phone numbers, zip
* codes, etc.
*
* Internally, formats will be implemented using subclasses of {@link Format}
* such as {@link DecimalFormat} and {@link java.text.SimpleDateFormat}. Therefore the
* formats used by this class must obey the same pattern rules as these Format
* subclasses. This means that only legal number pattern characters ("0", "#",
* ".", "," etc.) may appear in number formats. Other characters can be
* inserted before or after the number pattern to form a
* prefix or suffix.
*
*
* For example the Excel pattern "$#,##0.00 "USD"_);($#,##0.00 "USD")"
*
will be correctly formatted as "$1,000.00 USD" or "($1,000.00 USD)".
* However the pattern "00-00-00"
is incorrectly formatted by
* DecimalFormat as "000000--". For Excel formats that are not compatible with
* DecimalFormat, you can provide your own custom {@link Format} implementation
* via DataFormatter.addFormat(String,Format)
. The following
* custom formats are already provided by this class:
*
*
*
- SSN "000-00-0000"
* - Phone Number "(###) ###-####"
* - Zip plus 4 "00000-0000"
*
*
*
* If the Excel format pattern cannot be parsed successfully, then a default
* format will be used. The default number format will mimic the Excel General
* format: "#" for whole numbers and "#.##########" for decimal numbers. You
* can override the default format pattern with
* DataFormatter.setDefaultNumberFormat(Format)
. Note: the
* default format will only be used when a Format cannot be created from the
* cell's data format string.
*
*
* Note that by default formatted numeric values are trimmed. * Excel formats can contain spacers and padding and the default behavior is to strip them off. *
*Example:
*
* Consider a numeric cell with a value 12.343
and format "##.##_ "
.
* The trailing underscore and space ("_ ") in the format adds a space to the end and Excel formats this cell as "12.34 "
,
* but DataFormatter
trims the formatted value and returns "12.34"
.
*
emulateCSV=true
flag in the DateFormatter
cosntructor.
* If set to true, then the output tries to conform to what you get when you take an xls or xlsx in Excel and Save As CSV file:
* -
*
- returned values are not trimmed *
- Invalid dates are formatted as 255 pound signs ("#") *
- simulate Excel's handling of a format string of all # when the value is 0.
* Excel will output "",
DataFormatter
will output "0". *
* Some formats are automatically "localized" by Excel, eg show as mm/dd/yyyy when
* loaded in Excel in some Locales but as dd/mm/yyyy in others. These are always
* returned in the "default" (US) format, as stored in the file.
* Some format strings request an alternate locale, eg
*
* Returns the formatted value of a cell as a String regardless
* of the cell type. If the Excel format pattern cannot be parsed then the
* cell value will be formatted using a default format.
* When passed a null or blank cell, this method will return an empty
* String (""). Formulas in formula type cells will not be evaluated.
*
* Sets a default number format to be used when the Excel format cannot be
* parsed successfully. Note: This is a fall back for when an error
* occurs while parsing an Excel number format pattern. This will not
* affect cells with the General format.
*
* The value that will be passed to the Format's format method (specified
* by
* The value that will be passed to the Format's format method (specified
* by [$-809]d/m/yy h:mm AM/PM
which explicitly requests UK locale.
* These locale directives are (currently) ignored.
* You can use {@link DateFormatConverter} to do some of this localisation if
* you need it.
*/
public class DataFormatter implements Observer {
private static final String defaultFractionWholePartFormat = "#";
private static final String defaultFractionFractionPartFormat = "#/##";
/** Pattern to find a number format: "0" or "#" */
private static final Pattern numPattern = Pattern.compile("[0#]+");
/** Pattern to find days of week as text "ddd...." */
private static final Pattern daysAsText = Pattern.compile("([d]{3,})", Pattern.CASE_INSENSITIVE);
/** Pattern to find "AM/PM" marker */
private static final Pattern amPmPattern = Pattern.compile("((A|P)[M/P]*)", Pattern.CASE_INSENSITIVE);
/**
* A regex to find locale patterns like [$$-1009] and [$?-452].
* Note that we don't currently process these into locales
*/
private static final Pattern localePatternGroup = Pattern.compile("(\\[\\$[^-\\]]*-[0-9A-Z]+\\])");
/**
* A regex to match the colour formattings rules.
* Allowed colours are: Black, Blue, Cyan, Green,
* Magenta, Red, White, Yellow, "Color n" (1<=n<=56)
*/
private static final Pattern colorPattern =
Pattern.compile("(\\[BLACK\\])|(\\[BLUE\\])|(\\[CYAN\\])|(\\[GREEN\\])|" +
"(\\[MAGENTA\\])|(\\[RED\\])|(\\[WHITE\\])|(\\[YELLOW\\])|" +
"(\\[COLOR\\s*\\d\\])|(\\[COLOR\\s*[0-5]\\d\\])", Pattern.CASE_INSENSITIVE);
/**
* A regex to identify a fraction pattern.
* This requires that replaceAll("\\?", "#") has already been called
*/
private static final Pattern fractionPattern = Pattern.compile("(?:([#\\d]+)\\s+)?(#+)\\s*\\/\\s*([#\\d]+)");
/**
* A regex to strip junk out of fraction formats
*/
private static final Pattern fractionStripper = Pattern.compile("(\"[^\"]*\")|([^ \\?#\\d\\/]+)");
/**
* A regex to detect if an alternate grouping character is used
* in a numeric format
*/
private static final Pattern alternateGrouping = Pattern.compile("([#0]([^.#0])[#0]{3})");
/**
* Cells formatted with a date or time format and which contain invalid date or time values
* show 255 pound signs ("#").
*/
private static final String invalidDateTimeString;
static {
StringBuilder buf = new StringBuilder();
for(int i = 0; i < 255; i++) buf.append('#');
invalidDateTimeString = buf.toString();
}
/**
* The decimal symbols of the locale used for formatting values.
*/
private DecimalFormatSymbols decimalSymbols;
/**
* The date symbols of the locale used for formatting values.
*/
private DateFormatSymbols dateSymbols;
/**
* A default date format, if no date format was given
*/
private DateFormat defaultDateformat;
/** General format for numbers. */
private Format generalNumberFormat;
/** A default format to use when a number pattern cannot be parsed. */
private Format defaultNumFormat;
/**
* A map to cache formats.
* Mapnull
if the any of the
* following is true:
*
*
*
* @param cell The cell to retrieve a Format for
* @return A Format for the format String
*/
private Format getFormat(Cell cell) {
CTCellStyle cellStyle = CellUtils.getCellStyle(cell);
if ( cellStyle == null) {
return null;
}
String formatStr = CellUtils.getNumberFormatString(cell);
if(formatStr == null || formatStr.trim().length() == 0) {
return null;
}
long formatIndex = CellUtils.getNumberFormatIndex(cell);
return getFormat(CellUtils.getNumericCellValue(cell), formatIndex, formatStr);
}
private Format getFormat(double cellValue, long formatIndex, String formatStrIn) {
// // Might be better to separate out the n p and z formats, falling back to p when n and z are not set.
// // That however would require other code to be re factored.
// String[] formatBits = formatStrIn.split(";");
// int i = cellValue > 0.0 ? 0 : cellValue < 0.0 ? 1 : 2;
// String formatStr = (i < formatBits.length) ? formatBits[i] : formatBits[0];
String formatStr = formatStrIn;
// Excel supports 3+ part conditional data formats, eg positive/negative/zero,
// or (>1000),(>0),(0),(negative). As Java doesn't handle these kinds
// of different formats for different ranges, just +ve/-ve, we need to
// handle these ourselves in a special way.
// For now, if we detect 3+ parts, we call out to CellFormat to handle it
// TODO Going forward, we should really merge the logic between the two classes
if (formatStr.contains(";") &&
formatStr.indexOf(';') != formatStr.lastIndexOf(';')) {
// try {
// // Ask CellFormat to get a formatter for it
// CellFormat cfmt = CellFormat.getInstance(formatStr);
// // CellFormat requires callers to identify date vs not, so do so
// Object cellValueO = Double.valueOf(cellValue);
// if (DateUtil.isADateFormat((int) formatIndex, formatStr) &&
// // don't try to handle Date value 0, let a 3 or 4-part format take care of it
// ((Double)cellValueO).doubleValue() != 0.0) {
// cellValueO = DateUtil.getJavaDate(cellValue);
// }
// // Wrap and return (non-cachable - CellFormat does that)
// return new CellFormatResultWrapper( cfmt.apply(cellValueO) );
// } catch (Exception e) {
logger.warn("Formatting not ported for format " + formatStr + ", falling back");
// }
}
// Excel's # with value 0 will output empty where Java will output 0. This hack removes the # from the format.
if (emulateCSV && cellValue == 0.0 && formatStr.contains("#") && !formatStr.contains("0")) {
formatStr = formatStr.replaceAll("#", "");
}
// See if we already have it cached
Format format = formats.get(formatStr);
if (format != null) {
return format;
}
// Is it one of the special built in types, General or @?
if ("General".equalsIgnoreCase(formatStr) || "@".equals(formatStr)) {
return generalNumberFormat;
}
// Build a formatter, and cache it
format = createFormat(cellValue, formatIndex, formatStr);
formats.put(formatStr, format);
return format;
}
/**
* Create and return a Format based on the format string from a cell's
* style. If the pattern cannot be parsed, return a default pattern.
*
* @param cell The Excel cell
* @return A Format representing the excel format. May return null.
*/
public Format createFormat(Cell cell) {
//CTCellStyle cellStyle = cellUtils.getCellStyle(cell);
long formatIndex = CellUtils.getNumberFormatIndex(cell);
String formatStr = CellUtils.getNumberFormatString(cell);
return createFormat(CellUtils.getNumericCellValue(cell), formatIndex, formatStr);
}
private Format createFormat(double cellValue, long formatIndex, String sFormat) {
String formatStr = sFormat;
// Remove colour formatting if present
Matcher colourM = colorPattern.matcher(formatStr);
while(colourM.find()) {
String colour = colourM.group();
// Paranoid replacement...
int at = formatStr.indexOf(colour);
if(at == -1) break;
String nFormatStr = formatStr.substring(0,at) +
formatStr.substring(at+colour.length());
if(nFormatStr.equals(formatStr)) break;
// Try again in case there's multiple
formatStr = nFormatStr;
colourM = colorPattern.matcher(formatStr);
}
// Strip off the locale information, we use an instance-wide locale for everything
Matcher m = localePatternGroup.matcher(formatStr);
while(m.find()) {
String match = m.group();
String symbol = match.substring(match.indexOf('$') + 1, match.indexOf('-'));
if (symbol.indexOf('$') > -1) {
symbol = symbol.substring(0, symbol.indexOf('$')) +
'\\' +
symbol.substring(symbol.indexOf('$'), symbol.length());
}
formatStr = m.replaceAll(symbol);
m = localePatternGroup.matcher(formatStr);
}
// Check for special cases
if(formatStr == null || formatStr.trim().length() == 0) {
return getDefaultFormat(cellValue);
}
if ("General".equalsIgnoreCase(formatStr) || "@".equals(formatStr)) {
return generalNumberFormat;
}
if(DateUtil.isADateFormat((int) formatIndex,formatStr) &&
DateUtil.isValidExcelDate(cellValue)) {
return createDateFormat(formatStr, cellValue);
}
// Excel supports fractions in format strings, which Java doesn't
if (formatStr.contains("#/") || formatStr.contains("?/")) {
String[] chunks = formatStr.split(";");
for (String chunk1 : chunks) {
String chunk = chunk1.replaceAll("\\?", "#");
Matcher matcher = fractionStripper.matcher(chunk);
chunk = matcher.replaceAll(" ");
chunk = chunk.replaceAll(" +", " ");
Matcher fractionMatcher = fractionPattern.matcher(chunk);
//take the first match
if (fractionMatcher.find()) {
String wholePart = (fractionMatcher.group(1) == null) ? "" : defaultFractionWholePartFormat;
return new FractionFormat(wholePart, fractionMatcher.group(3));
}
}
// Strip custom text in quotes and escaped characters for now as it can cause performance problems in fractions.
//String strippedFormatStr = formatStr.replaceAll("\\\\ ", " ").replaceAll("\\\\.", "").replaceAll("\"[^\"]*\"", " ").replaceAll("\\?", "#");
//System.out.println("formatStr: "+strippedFormatStr);
return new FractionFormat(defaultFractionWholePartFormat, defaultFractionFractionPartFormat);
}
if (numPattern.matcher(formatStr).find()) {
return createNumberFormat(formatStr, cellValue);
}
if (emulateCSV) {
return new ConstantStringFormat(cleanFormatForNumber(formatStr));
}
// TODO - when does this occur?
return null;
}
private Format createDateFormat(String pFormatStr, double cellValue) {
String formatStr = pFormatStr;
formatStr = formatStr.replaceAll("\\\\-","-");
formatStr = formatStr.replaceAll("\\\\,",",");
formatStr = formatStr.replaceAll("\\\\\\.","."); // . is a special regexp char
formatStr = formatStr.replaceAll("\\\\ "," ");
formatStr = formatStr.replaceAll("\\\\/","/"); // weird: m\\/d\\/yyyy
formatStr = formatStr.replaceAll(";@", "");
formatStr = formatStr.replaceAll("\"/\"", "/"); // "/" is escaped for no reason in: mm"/"dd"/"yyyy
formatStr = formatStr.replace("\"\"", "'"); // replace Excel quoting with Java style quoting
formatStr = formatStr.replaceAll("\\\\T","'T'"); // Quote the T is iso8601 style dates
boolean hasAmPm = false;
Matcher amPmMatcher = amPmPattern.matcher(formatStr);
while (amPmMatcher.find()) {
formatStr = amPmMatcher.replaceAll("@");
hasAmPm = true;
amPmMatcher = amPmPattern.matcher(formatStr);
}
formatStr = formatStr.replaceAll("@", "a");
Matcher dateMatcher = daysAsText.matcher(formatStr);
if (dateMatcher.find()) {
String match = dateMatcher.group(0).toUpperCase(Locale.ROOT).replaceAll("D", "E");
formatStr = dateMatcher.replaceAll(match);
}
// Convert excel date format to SimpleDateFormat.
// Excel uses lower and upper case 'm' for both minutes and months.
// From Excel help:
/*
The "m" or "mm" code must appear immediately after the "h" or"hh"
code or immediately before the "ss" code; otherwise, Microsoft
Excel displays the month instead of minutes."
*/
StringBuilder sb = new StringBuilder();
char[] chars = formatStr.toCharArray();
boolean mIsMonth = true;
ListDataFormat
. i.e. "Thursday, January 02, 2003"
* , "01/02/2003" , "02-Jan" , etc.
*
* @param cell The cell
* @return a formatted date string
*/
private String getFormattedDateString(Cell cell) {
Format dateFormat = getFormat(cell);
if(dateFormat instanceof ExcelStyleDateFormatter) {
// Hint about the raw excel value
((ExcelStyleDateFormatter)dateFormat).setDateToBeFormatted(
CellUtils.getNumericCellValue(cell)
);
}
Date d = CellUtils.getDateCellValue(cell);
//Date d = cell.getDateCellValue();
return performDateFormatting(d, dateFormat);
}
/**
* Returns the formatted value of an Excel number as a String
* based on the cell's DataFormat
. Supported formats include
* currency, percents, decimals, phone number, SSN, etc.:
* "61.54%", "$100.00", "(800) 555-1234".
*
* @param cell The cell
* @return a formatted number string
*/
private String getFormattedNumberString(Cell cell) {
Format numberFormat = getFormat(cell);
double d = CellUtils.getNumericCellValue(cell);
if (numberFormat == null) {
return String.valueOf(d);
}
String formatted = numberFormat.format(new Double(d));
return formatted.replaceFirst("E(\\d)", "E+$1"); // to match Excel's E-notation
}
/**
* Formats the given raw cell value, based on the supplied
* format index and string, according to excel style rules.
* @see #formatCellValue(Cell)
*/
public String formatRawCellContents(double value, int formatIndex, String formatString) {
return formatRawCellContents(value, formatIndex, formatString, false);
}
/**
* Formats the given raw cell value, based on the supplied
* format index and string, according to excel style rules.
* @see #formatCellValue(Cell)
*/
public String formatRawCellContents(double value, int formatIndex, String formatString, boolean use1904Windowing) {
localeChangedObservable.checkForLocaleChange();
// Is it a date?
if(DateUtil.isADateFormat(formatIndex,formatString)) {
if(DateUtil.isValidExcelDate(value)) {
Format dateFormat = getFormat(value, formatIndex, formatString);
if(dateFormat instanceof ExcelStyleDateFormatter) {
// Hint about the raw excel value
((ExcelStyleDateFormatter)dateFormat).setDateToBeFormatted(value);
}
Date d = DateUtil.getJavaDate(value, use1904Windowing);
return performDateFormatting(d, dateFormat);
}
// RK: Invalid dates are 255 #s.
if (emulateCSV) {
return invalidDateTimeString;
}
}
// else Number
Format numberFormat = getFormat(value, formatIndex, formatString);
if (numberFormat == null) {
return String.valueOf(value);
}
// When formatting 'value', double to text to BigDecimal produces more
// accurate results than double to Double in JDK8 (as compared to
// previous versions). However, if the value contains E notation, this
// would expand the values, which we do not want, so revert to
// original method.
String result;
final String textValue = NumberToTextConverter.toText(value);
if (textValue.indexOf('E') > -1) {
result = numberFormat.format(new Double(value));
}
else {
result = numberFormat.format(new BigDecimal(textValue));
}
// Complete scientific notation by adding the missing +.
if (result.indexOf('E') > -1 && !result.contains("E-")) {
result = result.replaceFirst("E", "E+");
}
return result;
}
/**
* SUM(C4:E4)
*
* @return a formula for the cell
* @throws IllegalStateException if the cell type returned by {@link #getCellType()} is not CELL_TYPE_FORMULA
*/
public String getCellFormula(Cell _cell) {
int cellType = CellUtils.getCellType(_cell);
if(cellType != CellUtils.CELL_TYPE_FORMULA) throw CellUtils.typeMismatch(CellUtils.CELL_TYPE_FORMULA, cellType, false);
CTCellFormula f = _cell.getF();
// if (isPartOfArrayFormulaGroup() && f == null) {
// Cell cell = getSheet().getFirstCellInArrayFormula(this);
// return cell.getCellFormula();
// }
if (f==null) {
throw new RuntimeException("TODO: handle isPartOfArrayFormulaGroup()");
}
if (f.getT() == STCellFormulaType.SHARED) {
//return convertSharedFormula((int)f.getSi());
throw new RuntimeException("TODO: convertSharedFormula");
}
return f.getValue();
}
/**
* java.text.Format#format
) will be a double value from a
* numeric cell. Therefore the code in the format method should expect a
* Number
value.
* java.text.Format#format
) will be a double value from a
* numeric cell. Therefore the code in the format method should expect a
* Number
value.
* true
*/
private static DecimalFormat createIntegerOnlyFormat(String fmt) {
DecimalFormatSymbols dsf = DecimalFormatSymbols.getInstance(Locale.ROOT);
DecimalFormat result = new DecimalFormat(fmt, dsf);
result.setParseIntegerOnly(true);
return result;
}
/**
* Enables excel style rounding mode (round half up) on the
* Decimal Format given.
*/
public static void setExcelStyleRoundingMode(DecimalFormat format) {
setExcelStyleRoundingMode(format, RoundingMode.HALF_UP);
}
/**
* Enables custom rounding mode on the given Decimal Format.
* @param format DecimalFormat
* @param roundingMode RoundingMode
*/
public static void setExcelStyleRoundingMode(DecimalFormat format, RoundingMode roundingMode) {
format.setRoundingMode(roundingMode);
}
/**
* If the Locale has been changed via {@link LocaleUtil#setUserLocale(Locale)} the stored
* formats need to be refreshed. All formats which aren't originated from DataFormatter
* itself, i.e. all Formats added via {@link DataFormatter#addFormat(String, Format)} and
* {@link DataFormatter#setDefaultNumberFormat(Format)}, need to be added again.
* To notify callers, the returned {@link Observable} should be used.
* The Object in {@link Observer#update(Observable, Object)} is the new Locale.
*
* @return the listener object, where callers can register themselves
*/
public Observable getLocaleChangedObservable() {
return localeChangedObservable;
}
/**
* Update formats when locale has been changed
*
* @param observable usually this is our own Observable instance
* @param localeObj only reacts on Locale objects
*/
public void update(Observable observable, Object localeObj) {
if (!(localeObj instanceof Locale)) return;
Locale newLocale = (Locale)localeObj;
if (!localeIsAdapting || newLocale.equals(locale)) return;
locale = newLocale;
dateSymbols = DateFormatSymbols.getInstance(locale);
decimalSymbols = DecimalFormatSymbols.getInstance(locale);
generalNumberFormat = new ExcelGeneralNumberFormat(locale);
// taken from Date.toString()
defaultDateformat = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy", dateSymbols);
defaultDateformat.setTimeZone(LocaleUtil.getUserTimeZone());
// init built-in formats
formats.clear();
Format zipFormat = ZipPlusFourFormat.instance;
addFormat("00000\\-0000", zipFormat);
addFormat("00000-0000", zipFormat);
Format phoneFormat = PhoneFormat.instance;
// allow for format string variations
addFormat("[<=9999999]###\\-####;\\(###\\)\\ ###\\-####", phoneFormat);
addFormat("[<=9999999]###-####;(###) ###-####", phoneFormat);
addFormat("###\\-####;\\(###\\)\\ ###\\-####", phoneFormat);
addFormat("###-####;(###) ###-####", phoneFormat);
Format ssnFormat = SSNFormat.instance;
addFormat("000\\-00\\-0000", ssnFormat);
addFormat("000-00-0000", ssnFormat);
}
/**
* Format class for Excel's SSN format. This class mimics Excel's built-in
* SSN formatting.
*
* @author James May
*/
@SuppressWarnings("serial")
private static final class SSNFormat extends Format {
public static final Format instance = new SSNFormat();
private static final DecimalFormat df = createIntegerOnlyFormat("000000000");
private SSNFormat() {
// enforce singleton
}
/** Format a number as an SSN */
public static String format(Number num) {
String result = df.format(num);
return result.substring(0, 3) + '-' +
result.substring(3, 5) + '-' +
result.substring(5, 9);
}
@Override
public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
return toAppendTo.append(format((Number)obj));
}
@Override
public Object parseObject(String source, ParsePosition pos) {
return df.parseObject(source, pos);
}
}
/**
* Format class for Excel Zip + 4 format. This class mimics Excel's
* built-in formatting for Zip + 4.
* @author James May
*/
@SuppressWarnings("serial")
private static final class ZipPlusFourFormat extends Format {
public static final Format instance = new ZipPlusFourFormat();
private static final DecimalFormat df = createIntegerOnlyFormat("000000000");
private ZipPlusFourFormat() {
// enforce singleton
}
/** Format a number as Zip + 4 */
public static String format(Number num) {
String result = df.format(num);
return result.substring(0, 5) + '-' +
result.substring(5, 9);
}
@Override
public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
return toAppendTo.append(format((Number)obj));
}
@Override
public Object parseObject(String source, ParsePosition pos) {
return df.parseObject(source, pos);
}
}
/**
* Format class for Excel phone number format. This class mimics Excel's
* built-in phone number formatting.
* @author James May
*/
@SuppressWarnings("serial")
private static final class PhoneFormat extends Format {
public static final Format instance = new PhoneFormat();
private static final DecimalFormat df = createIntegerOnlyFormat("##########");
private PhoneFormat() {
// enforce singleton
}
/** Format a number as a phone number */
public static String format(Number num) {
String result = df.format(num);
StringBuilder sb = new StringBuilder();
String seg1, seg2, seg3;
int len = result.length();
if (len <= 4) {
return result;
}
seg3 = result.substring(len - 4, len);
seg2 = result.substring(Math.max(0, len - 7), len - 4);
seg1 = result.substring(Math.max(0, len - 10), Math.max(0, len - 7));
if(seg1.trim().length() > 0) {
sb.append('(').append(seg1).append(") ");
}
if(seg2.trim().length() > 0) {
sb.append(seg2).append('-');
}
sb.append(seg3);
return sb.toString();
}
@Override
public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
return toAppendTo.append(format((Number)obj));
}
@Override
public Object parseObject(String source, ParsePosition pos) {
return df.parseObject(source, pos);
}
}
/**
* Format class that does nothing and always returns a constant string.
*
* This format is used to simulate Excel's handling of a format string
* of all # when the value is 0. Excel will output "", Java will output "0".
*
* @see DataFormatter#createFormat(double, int, String)
*/
@SuppressWarnings("serial")
private static final class ConstantStringFormat extends Format {
private static final DecimalFormat df = createIntegerOnlyFormat("##########");
private final String str;
public ConstantStringFormat(String s) {
str = s;
}
@Override
public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
return toAppendTo.append(str);
}
@Override
public Object parseObject(String source, ParsePosition pos) {
return df.parseObject(source, pos);
}
}
}