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/*
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* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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package com.nokia.mj.impl.utils;
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import java.util.Date;
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/**
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* Formatter for Avkon based platform.
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* @see Formatter
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*/
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public class FormatterAvkon extends Formatter
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{
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/** Original pattern string */
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private String pattern;
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/** String with latest replacements */
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private String replaced;
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/**
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* Platform localisation type.
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* Either ResourceLoader.AVKON or ResourceLoader.QT.
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*/
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private final int locType;
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/**
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* The first text parameter replacement index. For Avkon based
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* localisation this is 0, for Qt based localisation this is 1.
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*/
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private final int startIndex;
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/** Next replacement index */
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private int nextIndex;
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/*** ----------------------------- PUBLIC ------------------------------ */
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/**
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* Replace the lowest numbered parameter in the string, which is not yet
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* replaced.
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*
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* @param string string to replace at the argument
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* @return same formatter
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*/
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public Formatter arg(String string)
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{
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// Try to replace with patterns %[N...N]n, %nU, %n, %U
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String maxPattern = findMaxPattern();
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if ((maxPattern != null && replace(maxPattern, string)) ||
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replace("%" + nextIndex + "U", string) ||
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replace("%" + nextIndex, string) ||
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replace("%U", string))
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{
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nextIndex++;
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}
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else
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{
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Logger.WLOG(Logger.EUtils,
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"FormatterAvkon: String replacement failed on parameter " +
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nextIndex + ": " + pattern);
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}
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return this;
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}
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/**
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* Replace the least numbered parameter in the string, which is not yet
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* replaced.
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*
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* @param number number to replace at the argument
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* @return same formatter
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*/
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public Formatter arg(int number)
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{
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String localisedNumber = _formatInteger(number);
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// Try to replace with patterns %[N...N]n, %Ln, %nN, %n, %N
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String maxPattern = findMaxPattern();
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if ((maxPattern != null && replace(maxPattern, localisedNumber)) ||
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replace("%" + "L" + nextIndex, localisedNumber) ||
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replace("%" + nextIndex + "N", localisedNumber) ||
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replace("%" + nextIndex, localisedNumber) ||
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replace("%N", localisedNumber))
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{
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nextIndex++;
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}
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else
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{
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Logger.WLOG(Logger.EUtils,
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"FormatterAvkon: Integer replacement failed on parameter " +
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nextIndex + ": " + pattern);
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}
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return this;
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}
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/**
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* Replace the least numbered parameter in the string, which is not yet
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* replaced.
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*
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* @param ch character to replace at the argument
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* @return same formatter
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*/
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public Formatter arg(char ch)
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{
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String chString = new String(new char[] { ch });
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// Try to replace with patterns %nC, %n, %C
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if (replace("%" + nextIndex + "C", chString) ||
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replace("%" + nextIndex, chString) ||
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replace("%C", chString))
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{
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nextIndex++;
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}
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else
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{
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Logger.WLOG(Logger.EUtils,
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"FormatterAvkon: Character replacement failed on parameter " +
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nextIndex + ": " + pattern);
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}
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return this;
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}
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/**
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* Replace the least numbered parameter in the string, which is not yet
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* replaced. Date is formatted according to current device date format.
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*
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* @param date date to replace at the argument
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* @return same formatter
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*/
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public Formatter arg(Date date)
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{
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String dateString = _formatDate(date.getTime());
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return arg(dateString);
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}
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/**
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* Convert the current pattern to string, along with parameter
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* replacements.
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*
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* @return string where parameters are replaced
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*/
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public String toString()
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{
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String result = replaced;
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// Reset for next usage
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replaced = pattern;
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nextIndex = startIndex;
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return result;
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}
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/**
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* Applies convertion from european digits into arabic-indic digits
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* based on existing language settings
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*
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* @param str String which might contain european digits
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* @return A string identical with the provided string but with the
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* european digits (if any) converted to arabic-indic digits
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*/
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public static String formatDigits(String str)
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{
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return _formatDigits(str);
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}
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/*** ----------------------------- PROTECTED -------------------------- */
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/**
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* Default constructor.
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*/
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protected FormatterAvkon()
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{
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this("");
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}
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/**
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* Create a new formatter
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*
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* @param pattern formatter pattern
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*/
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protected FormatterAvkon(String aPattern)
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{
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this(aPattern, ResourceLoader.AVKON);
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}
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/**
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* Create a new formatter
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*
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* @param pattern formatter pattern
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* @param aLocType platform localisation type
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*/
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protected FormatterAvkon(String aPattern, int aLocType)
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{
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pattern = aPattern;
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replaced = aPattern;
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locType = aLocType;
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startIndex = (locType == ResourceLoader.QT? 1: 0);
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nextIndex = startIndex;
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}
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/*** ----------------------------- PRIVATE ---------------------------- */
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/**
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* Replace first occurrence of the string pattern in the replaced field.
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*
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* @param pattern string to search for
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* @param replacement string to replace patterns
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* @return true if pattern was found and replaced, false if pattern was
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* not found
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*/
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private boolean replace(String pattern, String replacement)
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{
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int index = replaced.indexOf(pattern);
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if (index != -1)
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{
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if (replaced.indexOf(pattern + "[]") != -1)
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{
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replaced =
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replaced.substring(0, index) + replacement +
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replaced.substring(index + pattern.length() + 2);
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}
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else if (replaced.indexOf(pattern + "[") != -1)
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{
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return replaceWithMax(pattern, replacement, index);
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}
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else
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{
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replaced =
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replaced.substring(0, index) + replacement +
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replaced.substring(index + pattern.length());
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}
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return true;
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}
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return false;
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}
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/**
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* Replace first occurrence of the string pattern in the replaced field.
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* Replace [N...N] defined amount of characters.
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*
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* @param pattern string to search for
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* @param replacement string to replace patterns
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* @param index of replacement tag.
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* @return true if pattern was found and replaced, false if pattern was
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* not found
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*/
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private boolean replaceWithMax(String pattern, String replacement, int maxIndex)
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{
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boolean result = false;
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int closingIndex = replaced.indexOf("]", maxIndex + pattern.length());
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// Check format [N...N] comply. If not skip.
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if (closingIndex > 0)
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{
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try
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{
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int maxLen = Integer.parseInt(replaced.substring(
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maxIndex + pattern.length() + 1, closingIndex));
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if (maxLen > replacement.length())
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{
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maxLen = replacement.length();
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}
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replaced = replaced.substring(0, maxIndex) +
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replacement.substring(0, maxLen) +
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replaced.substring(closingIndex + 1);
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result = true;
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}
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catch (NumberFormatException nfe)
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{
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Logger.WLOG(Logger.EUtils,
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"FormatterAvkon: Replace with max failed to " +
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"invalid replacement amount");
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}
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}
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return result;
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}
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/**
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* Finds next %[N...N]n pattern from the replaced field.
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* Returns found pattern, or null if no pattern was found.
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*/
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private String findMaxPattern()
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{
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String result = null;
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String startPattern = "%[";
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String endPattern = "]" + nextIndex;
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int startIndex = replaced.indexOf(startPattern);
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if (startIndex >= 0)
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{
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int endIndex = replaced.indexOf(endPattern, startIndex);
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if (endIndex >= 0)
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{
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result = replaced.substring(
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startIndex, endIndex + endPattern.length());
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}
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}
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return result;
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}
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/*** ----------------------------- NATIVE ----------------------------- */
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/**
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* Format integer to current locale.
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*
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* @param number to be formatted.
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* @return number formatted as current locale String.
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*/
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private static native String _formatInteger(int number);
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/**
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* Format date to current locale.
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*
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* @param timeInMilliSecs to be formatted.
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* @param format Date format.
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* @return date formatted as current locale String.
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*
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*/
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private static native String _formatDate(long timeInMilliSecs);
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/**
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* Applies conversion from european digits into arabic-indic digits
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* based on existing language settings
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*
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* @param str String which might contain european digits
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* @return A string identical with the provided string but with the
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* european digits (if any) converted to arabic-indic digits
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*/
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private static native String _formatDigits(String str);
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}
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