666 lines
24 KiB
Java
666 lines
24 KiB
Java
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.ss.usermodel;
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import java.util.regex.Pattern;
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import java.util.regex.Matcher;
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import java.util.*;
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import java.text.*;
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/**
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* DataFormatter contains methods for formatting the value stored in an
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* Cell. This can be useful for reports and GUI presentations when you
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* need to display data exactly as it appears in Excel. Supported formats
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* include currency, SSN, percentages, decimals, dates, phone numbers, zip
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* codes, etc.
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* <p>
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* Internally, formats will be implemented using subclasses of {@link Format}
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* such as {@link DecimalFormat} and {@link SimpleDateFormat}. Therefore the
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* formats used by this class must obey the same pattern rules as these Format
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* subclasses. This means that only legal number pattern characters ("0", "#",
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* ".", "," etc.) may appear in number formats. Other characters can be
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* inserted <em>before</em> or <em> after</em> the number pattern to form a
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* prefix or suffix.
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* </p>
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* <p>
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* For example the Excel pattern <code>"$#,##0.00 "USD"_);($#,##0.00 "USD")"
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* </code> will be correctly formatted as "$1,000.00 USD" or "($1,000.00 USD)".
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* However the pattern <code>"00-00-00"</code> is incorrectly formatted by
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* DecimalFormat as "000000--". For Excel formats that are not compatible with
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* DecimalFormat, you can provide your own custom {@link Format} implementation
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* via <code>DataFormatter.addFormat(String,Format)</code>. The following
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* custom formats are already provided by this class:
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* </p>
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* <pre>
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* <ul><li>SSN "000-00-0000"</li>
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* <li>Phone Number "(###) ###-####"</li>
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* <li>Zip plus 4 "00000-0000"</li>
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* </ul>
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* </pre>
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* <p>
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* If the Excel format pattern cannot be parsed successfully, then a default
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* format will be used. The default number format will mimic the Excel General
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* format: "#" for whole numbers and "#.##########" for decimal numbers. You
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* can override the default format pattern with <code>
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* DataFormatter.setDefaultNumberFormat(Format)</code>. <b>Note:</b> the
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* default format will only be used when a Format cannot be created from the
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* cell's data format string.
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*
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* @author James May (james dot may at fmr dot com)
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*
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*/
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public class DataFormatter {
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/** Pattern to find a number format: "0" or "#" */
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private static final Pattern numPattern = Pattern.compile("[0#]+");
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/** Pattern to find days of week as text "ddd...." */
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private static final Pattern daysAsText = Pattern.compile("([d]{3,})", Pattern.CASE_INSENSITIVE);
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/** Pattern to find "AM/PM" marker */
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private static final Pattern amPmPattern = Pattern.compile("((A|P)[M/P]*)", Pattern.CASE_INSENSITIVE);
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/** A regex to find patterns like [$$-1009] and [$?-452]. */
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private static final Pattern specialPatternGroup = Pattern.compile("(\\[\\$[^-\\]]*-[0-9A-Z]+\\])");
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/** <em>General</em> format for whole numbers. */
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private static final Format generalWholeNumFormat = new DecimalFormat("#");
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/** <em>General</em> format for decimal numbers. */
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private static final Format generalDecimalNumFormat = new DecimalFormat("#.##########");
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/** A default format to use when a number pattern cannot be parsed. */
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private Format defaultNumFormat;
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/**
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* A map to cache formats.
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* Map<String,Format> formats
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*/
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private final Map formats;
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/**
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* Constructor
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*/
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public DataFormatter() {
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formats = new HashMap();
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// init built-in formats
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Format zipFormat = ZipPlusFourFormat.instance;
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addFormat("00000\\-0000", zipFormat);
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addFormat("00000-0000", zipFormat);
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Format phoneFormat = PhoneFormat.instance;
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// allow for format string variations
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addFormat("[<=9999999]###\\-####;\\(###\\)\\ ###\\-####", phoneFormat);
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addFormat("[<=9999999]###-####;(###) ###-####", phoneFormat);
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addFormat("###\\-####;\\(###\\)\\ ###\\-####", phoneFormat);
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addFormat("###-####;(###) ###-####", phoneFormat);
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Format ssnFormat = SSNFormat.instance;
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addFormat("000\\-00\\-0000", ssnFormat);
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addFormat("000-00-0000", ssnFormat);
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}
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/**
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* Return a Format for the given cell if one exists, otherwise try to
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* create one. This method will return <code>null</code> if the any of the
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* following is true:
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* <ul>
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* <li>the cell's style is null</li>
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* <li>the style's data format string is null or empty</li>
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* <li>the format string cannot be recognized as either a number or date</li>
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* </ul>
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*
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* @param cell The cell to retrieve a Format for
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* @return A Format for the format String
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*/
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private Format getFormat(Cell cell) {
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if ( cell.getCellStyle() == null) {
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return null;
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}
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int formatIndex = cell.getCellStyle().getDataFormat();
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String formatStr = cell.getCellStyle().getDataFormatString();
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if(formatStr == null || formatStr.trim().length() == 0) {
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return null;
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}
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return getFormat(cell.getNumericCellValue(), formatIndex, formatStr);
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}
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private Format getFormat(double cellValue, int formatIndex, String formatStr) {
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Format format = (Format)formats.get(formatStr);
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if (format != null) {
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return format;
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}
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if (formatStr.equals("General") || formatStr.equals("@")) {
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if (DataFormatter.isWholeNumber(cellValue)) {
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return generalWholeNumFormat;
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}
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return generalDecimalNumFormat;
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}
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format = createFormat(cellValue, formatIndex, formatStr);
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formats.put(formatStr, format);
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return format;
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}
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/**
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* Create and return a Format based on the format string from a cell's
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* style. If the pattern cannot be parsed, return a default pattern.
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*
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* @param cell The Excel cell
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* @return A Format representing the excel format. May return null.
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*/
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public Format createFormat(Cell cell) {
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int formatIndex = cell.getCellStyle().getDataFormat();
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String formatStr = cell.getCellStyle().getDataFormatString();
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return createFormat(cell.getNumericCellValue(), formatIndex, formatStr);
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}
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private Format createFormat(double cellValue, int formatIndex, String sFormat) {
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// remove color formatting if present
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String formatStr = sFormat.replaceAll("\\[[a-zA-Z]*\\]", "");
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// try to extract special characters like currency
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Matcher m = specialPatternGroup.matcher(formatStr);
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while(m.find()) {
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String match = m.group();
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String symbol = match.substring(match.indexOf('$') + 1, match.indexOf('-'));
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if (symbol.indexOf('$') > -1) {
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StringBuffer sb = new StringBuffer();
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sb.append(symbol.substring(0, symbol.indexOf('$')));
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sb.append('\\');
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sb.append(symbol.substring(symbol.indexOf('$'), symbol.length()));
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symbol = sb.toString();
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}
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formatStr = m.replaceAll(symbol);
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m = specialPatternGroup.matcher(formatStr);
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}
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if(formatStr == null || formatStr.trim().length() == 0) {
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return getDefaultFormat(cellValue);
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}
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if(DateUtil.isADateFormat(formatIndex,formatStr) &&
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DateUtil.isValidExcelDate(cellValue)) {
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return createDateFormat(formatStr, cellValue);
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}
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if (numPattern.matcher(formatStr).find()) {
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return createNumberFormat(formatStr, cellValue);
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}
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// TODO - when does this occur?
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return null;
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}
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private Format createDateFormat(String pFormatStr, double cellValue) {
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String formatStr = pFormatStr;
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formatStr = formatStr.replaceAll("\\\\-","-");
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formatStr = formatStr.replaceAll("\\\\,",",");
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formatStr = formatStr.replaceAll("\\\\ "," ");
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formatStr = formatStr.replaceAll(";@", "");
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boolean hasAmPm = false;
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Matcher amPmMatcher = amPmPattern.matcher(formatStr);
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while (amPmMatcher.find()) {
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formatStr = amPmMatcher.replaceAll("@");
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hasAmPm = true;
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amPmMatcher = amPmPattern.matcher(formatStr);
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}
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formatStr = formatStr.replaceAll("@", "a");
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Matcher dateMatcher = daysAsText.matcher(formatStr);
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if (dateMatcher.find()) {
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String match = dateMatcher.group(0);
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formatStr = dateMatcher.replaceAll(match.toUpperCase().replaceAll("D", "E"));
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}
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// Convert excel date format to SimpleDateFormat.
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// Excel uses lower case 'm' for both minutes and months.
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// From Excel help:
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/*
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The "m" or "mm" code must appear immediately after the "h" or"hh"
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code or immediately before the "ss" code; otherwise, Microsoft
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Excel displays the month instead of minutes."
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*/
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StringBuffer sb = new StringBuffer();
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char[] chars = formatStr.toCharArray();
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boolean mIsMonth = true;
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List ms = new ArrayList();
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for(int j=0; j<chars.length; j++) {
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char c = chars[j];
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if (c == 'h' || c == 'H') {
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mIsMonth = false;
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if (hasAmPm) {
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sb.append('h');
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} else {
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sb.append('H');
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}
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}
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else if (c == 'm') {
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if(mIsMonth) {
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sb.append('M');
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ms.add(
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new Integer(sb.length() -1)
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);
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} else {
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sb.append('m');
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}
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}
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else if (c == 's' || c == 'S') {
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sb.append('s');
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// if 'M' precedes 's' it should be minutes ('m')
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for (int i = 0; i < ms.size(); i++) {
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int index = ((Integer)ms.get(i)).intValue();
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if (sb.charAt(index) == 'M') {
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sb.replace(index, index+1, "m");
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}
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}
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mIsMonth = true;
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ms.clear();
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}
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else if (Character.isLetter(c)) {
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mIsMonth = true;
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ms.clear();
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if (c == 'y' || c == 'Y') {
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sb.append('y');
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}
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else if (c == 'd' || c == 'D') {
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sb.append('d');
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}
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else {
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sb.append(c);
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}
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}
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else {
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sb.append(c);
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}
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}
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formatStr = sb.toString();
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try {
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return new SimpleDateFormat(formatStr);
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} catch(IllegalArgumentException iae) {
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// the pattern could not be parsed correctly,
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// so fall back to the default number format
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return getDefaultFormat(cellValue);
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}
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}
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private Format createNumberFormat(String formatStr, double cellValue) {
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StringBuffer sb = new StringBuffer(formatStr);
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for (int i = 0; i < sb.length(); i++) {
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char c = sb.charAt(i);
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//handle (#,##0_);
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if (c == '(') {
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int idx = sb.indexOf(")", i);
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if (idx > -1 && sb.charAt(idx -1) == '_') {
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sb.deleteCharAt(idx);
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sb.deleteCharAt(idx - 1);
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sb.deleteCharAt(i);
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i--;
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}
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} else if (c == ')' && i > 0 && sb.charAt(i - 1) == '_') {
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sb.deleteCharAt(i);
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sb.deleteCharAt(i - 1);
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i--;
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// remove quotes and back slashes
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} else if (c == '\\' || c == '"') {
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sb.deleteCharAt(i);
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i--;
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// for scientific/engineering notation
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} else if (c == '+' && i > 0 && sb.charAt(i - 1) == 'E') {
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sb.deleteCharAt(i);
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i--;
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}
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}
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try {
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return new DecimalFormat(sb.toString());
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} catch(IllegalArgumentException iae) {
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// the pattern could not be parsed correctly,
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// so fall back to the default number format
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return getDefaultFormat(cellValue);
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}
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}
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/**
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* Return true if the double value represents a whole number
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* @param d the double value to check
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* @return <code>true</code> if d is a whole number
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*/
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private static boolean isWholeNumber(double d) {
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return d == Math.floor(d);
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}
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/**
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* Returns a default format for a cell.
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* @param cell The cell
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* @return a default format
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*/
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public Format getDefaultFormat(Cell cell) {
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return getDefaultFormat(cell.getNumericCellValue());
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}
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private Format getDefaultFormat(double cellValue) {
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// for numeric cells try user supplied default
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if (defaultNumFormat != null) {
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return defaultNumFormat;
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// otherwise use general format
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}
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if (isWholeNumber(cellValue)){
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return generalWholeNumFormat;
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}
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return generalDecimalNumFormat;
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}
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/**
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* Returns the formatted value of an Excel date as a <tt>String</tt> based
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* on the cell's <code>DataFormat</code>. i.e. "Thursday, January 02, 2003"
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* , "01/02/2003" , "02-Jan" , etc.
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*
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* @param cell The cell
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* @return a formatted date string
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*/
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private String getFormattedDateString(Cell cell) {
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Format dateFormat = getFormat(cell);
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Date d = cell.getDateCellValue();
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if (dateFormat != null) {
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return dateFormat.format(d);
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}
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return d.toString();
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}
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/**
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* Returns the formatted value of an Excel number as a <tt>String</tt>
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* based on the cell's <code>DataFormat</code>. Supported formats include
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* currency, percents, decimals, phone number, SSN, etc.:
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* "61.54%", "$100.00", "(800) 555-1234".
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*
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* @param cell The cell
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* @return a formatted number string
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*/
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private String getFormattedNumberString(Cell cell) {
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Format numberFormat = getFormat(cell);
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double d = cell.getNumericCellValue();
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if (numberFormat == null) {
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return String.valueOf(d);
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}
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return numberFormat.format(new Double(d));
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}
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/**
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* Formats the given raw cell value, based on the supplied
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* format index and string, according to excel style rules.
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* @see #formatCellValue(Cell)
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*/
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public String formatRawCellContents(double value, int formatIndex, String formatString) {
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// Is it a date?
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if(DateUtil.isADateFormat(formatIndex,formatString) &&
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DateUtil.isValidExcelDate(value)) {
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Format dateFormat = getFormat(value, formatIndex, formatString);
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Date d = DateUtil.getJavaDate(value);
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if (dateFormat == null) {
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return d.toString();
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}
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return dateFormat.format(d);
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}
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// else Number
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Format numberFormat = getFormat(value, formatIndex, formatString);
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if (numberFormat == null) {
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return String.valueOf(value);
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}
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return numberFormat.format(new Double(value));
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}
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/**
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* <p>
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* Returns the formatted value of a cell as a <tt>String</tt> regardless
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* of the cell type. If the Excel format pattern cannot be parsed then the
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* cell value will be formatted using a default format.
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* </p>
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* <p>When passed a null or blank cell, this method will return an empty
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* String (""). Formulas in formula type cells will not be evaluated.
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* </p>
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*
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* @param cell The cell
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* @return the formatted cell value as a String
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*/
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public String formatCellValue(Cell cell) {
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return formatCellValue(cell, null);
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}
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/**
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* <p>
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* Returns the formatted value of a cell as a <tt>String</tt> regardless
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* of the cell type. If the Excel format pattern cannot be parsed then the
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* cell value will be formatted using a default format.
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* </p>
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* <p>When passed a null or blank cell, this method will return an empty
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* String (""). Formula cells will be evaluated using the given
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* {@link FormulaEvaluator} if the evaluator is non-null. If the
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* evaluator is null, then the formula String will be returned. The caller
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* is responsible for setting the currentRow on the evaluator
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*</p>
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*
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* @param cell The cell (can be null)
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* @param evaluator The FormulaEvaluator (can be null)
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* @return a string value of the cell
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*/
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public String formatCellValue(Cell cell, FormulaEvaluator evaluator) {
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if (cell == null) {
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return "";
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}
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int cellType = cell.getCellType();
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if (cellType == Cell.CELL_TYPE_FORMULA) {
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if (evaluator == null) {
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return cell.getCellFormula();
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}
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cellType = evaluator.evaluateFormulaCell(cell);
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}
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switch (cellType) {
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case Cell.CELL_TYPE_NUMERIC :
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if (DateUtil.isCellDateFormatted(cell)) {
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return getFormattedDateString(cell);
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}
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return getFormattedNumberString(cell);
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case Cell.CELL_TYPE_STRING :
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return cell.getRichStringCellValue().getString();
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case Cell.CELL_TYPE_BOOLEAN :
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return String.valueOf(cell.getBooleanCellValue());
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case Cell.CELL_TYPE_BLANK :
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return "";
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}
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throw new RuntimeException("Unexpected celltype (" + cellType + ")");
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}
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/**
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* <p>
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* Sets a default number format to be used when the Excel format cannot be
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* parsed successfully. <b>Note:</b> This is a fall back for when an error
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* occurs while parsing an Excel number format pattern. This will not
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* affect cells with the <em>General</em> format.
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* </p>
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* <p>
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* The value that will be passed to the Format's format method (specified
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|
* by <code>java.text.Format#format</code>) will be a double value from a
|
|
* numeric cell. Therefore the code in the format method should expect a
|
|
* <code>Number</code> value.
|
|
* </p>
|
|
*
|
|
* @param format A Format instance to be used as a default
|
|
* @see java.text.Format#format
|
|
*/
|
|
public void setDefaultNumberFormat(Format format) {
|
|
Iterator itr = formats.entrySet().iterator();
|
|
while(itr.hasNext()) {
|
|
Map.Entry entry = (Map.Entry)itr.next();
|
|
if (entry.getValue() == generalDecimalNumFormat
|
|
|| entry.getValue() == generalWholeNumFormat) {
|
|
entry.setValue(format);
|
|
}
|
|
}
|
|
defaultNumFormat = format;
|
|
}
|
|
|
|
/**
|
|
* Adds a new format to the available formats.
|
|
* <p>
|
|
* The value that will be passed to the Format's format method (specified
|
|
* by <code>java.text.Format#format</code>) will be a double value from a
|
|
* numeric cell. Therefore the code in the format method should expect a
|
|
* <code>Number</code> value.
|
|
* </p>
|
|
* @param excelFormatStr The data format string
|
|
* @param format A Format instance
|
|
*/
|
|
public void addFormat(String excelFormatStr, Format format) {
|
|
formats.put(excelFormatStr, format);
|
|
}
|
|
|
|
// Some custom formats
|
|
|
|
/**
|
|
* @return a <tt>DecimalFormat</tt> with parseIntegerOnly set <code>true</code>
|
|
*/
|
|
/* package */ static DecimalFormat createIntegerOnlyFormat(String fmt) {
|
|
DecimalFormat result = new DecimalFormat(fmt);
|
|
result.setParseIntegerOnly(true);
|
|
return result;
|
|
}
|
|
/**
|
|
* Format class for Excel's SSN format. This class mimics Excel's built-in
|
|
* SSN formatting.
|
|
*
|
|
* @author James May
|
|
*/
|
|
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);
|
|
StringBuffer sb = new StringBuffer();
|
|
sb.append(result.substring(0, 3)).append('-');
|
|
sb.append(result.substring(3, 5)).append('-');
|
|
sb.append(result.substring(5, 9));
|
|
return sb.toString();
|
|
}
|
|
|
|
public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
|
|
return toAppendTo.append(format((Number)obj));
|
|
}
|
|
|
|
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
|
|
*/
|
|
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);
|
|
StringBuffer sb = new StringBuffer();
|
|
sb.append(result.substring(0, 5)).append('-');
|
|
sb.append(result.substring(5, 9));
|
|
return sb.toString();
|
|
}
|
|
|
|
public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
|
|
return toAppendTo.append(format((Number)obj));
|
|
}
|
|
|
|
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
|
|
*/
|
|
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);
|
|
StringBuffer sb = new StringBuffer();
|
|
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 != null && seg1.trim().length() > 0) {
|
|
sb.append('(').append(seg1).append(") ");
|
|
}
|
|
if(seg2 != null && seg2.trim().length() > 0) {
|
|
sb.append(seg2).append('-');
|
|
}
|
|
sb.append(seg3);
|
|
return sb.toString();
|
|
}
|
|
|
|
public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {
|
|
return toAppendTo.append(format((Number)obj));
|
|
}
|
|
|
|
public Object parseObject(String source, ParsePosition pos) {
|
|
return df.parseObject(source, pos);
|
|
}
|
|
}
|
|
}
|