mirror of
https://github.com/rn10950/RetroZilla.git
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247 lines
7.6 KiB
C++
247 lines
7.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (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.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is TransforMiiX XSLT processor code.
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*
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* The Initial Developer of the Original Code is
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* Jonas Sicking.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Jonas Sicking <sicking@bigfoot.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "txXSLTNumber.h"
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#include "nsReadableUtils.h"
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#include "txCore.h"
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class txDecimalCounter : public txFormattedCounter {
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public:
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txDecimalCounter() : mMinLength(1), mGroupSize(50)
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{
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}
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txDecimalCounter(PRInt32 aMinLength, PRInt32 aGroupSize,
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const nsAString& mGroupSeparator);
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virtual void appendNumber(PRInt32 aNumber, nsAString& aDest);
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private:
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PRInt32 mMinLength;
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PRInt32 mGroupSize;
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nsString mGroupSeparator;
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};
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class txAlphaCounter : public txFormattedCounter {
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public:
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txAlphaCounter(PRUnichar aOffset) : mOffset(aOffset)
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{
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}
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virtual void appendNumber(PRInt32 aNumber, nsAString& aDest);
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private:
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PRUnichar mOffset;
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};
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class txRomanCounter : public txFormattedCounter {
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public:
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txRomanCounter(MBool aUpper) : mTableOffset(aUpper ? 30 : 0)
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{
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}
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void appendNumber(PRInt32 aNumber, nsAString& aDest);
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private:
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PRInt32 mTableOffset;
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};
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nsresult
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txFormattedCounter::getCounterFor(const nsAFlatString& aToken,
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PRInt32 aGroupSize,
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const nsAString& aGroupSeparator,
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txFormattedCounter*& aCounter)
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{
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PRInt32 length = aToken.Length();
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NS_ASSERTION(length, "getting counter for empty token");
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aCounter = 0;
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if (length == 1) {
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PRUnichar ch = aToken.CharAt(0);
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switch (ch) {
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case 'i':
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case 'I':
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aCounter = new txRomanCounter(ch == 'I');
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break;
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case 'a':
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case 'A':
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aCounter = new txAlphaCounter(ch);
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break;
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case '1':
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default:
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// if we don't recognize the token then use "1"
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aCounter = new txDecimalCounter(1, aGroupSize,
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aGroupSeparator);
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break;
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}
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return aCounter ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
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}
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// for now, the only multi-char token we support are decimals
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PRInt32 i;
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for (i = 0; i < length-1; ++i) {
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if (aToken.CharAt(i) != '0')
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break;
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}
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if (i == length-1 && aToken.CharAt(i) == '1') {
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aCounter = new txDecimalCounter(length, aGroupSize, aGroupSeparator);
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}
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else {
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// if we don't recognize the token then use '1'
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aCounter = new txDecimalCounter(1, aGroupSize, aGroupSeparator);
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}
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return aCounter ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
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}
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txDecimalCounter::txDecimalCounter(PRInt32 aMinLength, PRInt32 aGroupSize,
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const nsAString& aGroupSeparator)
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: mMinLength(aMinLength), mGroupSize(aGroupSize),
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mGroupSeparator(aGroupSeparator)
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{
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if (mGroupSize <= 0) {
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mGroupSize = aMinLength + 10;
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}
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}
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void txDecimalCounter::appendNumber(PRInt32 aNumber, nsAString& aDest)
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{
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const PRInt32 bufsize = 10; //must be able to fit an PRInt32
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PRUnichar buf[bufsize];
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PRInt32 pos = bufsize;
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while (aNumber > 0) {
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PRInt32 ch = aNumber % 10;
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aNumber /= 10;
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buf[--pos] = ch + '0';
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}
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// in case we didn't get a long enough string
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PRInt32 end = (bufsize > mMinLength) ? bufsize - mMinLength : 0;
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while (pos > end) {
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buf[--pos] = '0';
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}
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// in case we *still* didn't get a long enough string.
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// this should be very rare since it only happens if mMinLength is bigger
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// then the length of any PRInt32.
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// pos will always be zero
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PRInt32 extraPos = mMinLength;
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while (extraPos > bufsize) {
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aDest.Append(PRUnichar('0'));
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--extraPos;
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if (extraPos % mGroupSize == 0) {
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aDest.Append(mGroupSeparator);
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}
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}
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// copy string to buffer
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if (mGroupSize >= bufsize - pos) {
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// no grouping will occur
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aDest.Append(buf + pos, (PRUint32)(bufsize - pos));
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}
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else {
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// append chars up to first grouping separator
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PRInt32 len = ((bufsize - pos - 1) % mGroupSize) + 1;
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aDest.Append(buf + pos, len);
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pos += len;
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while (bufsize - pos > 0) {
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aDest.Append(mGroupSeparator);
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aDest.Append(buf + pos, mGroupSize);
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pos += mGroupSize;
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}
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NS_ASSERTION(bufsize == pos, "error while grouping");
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}
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}
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void txAlphaCounter::appendNumber(PRInt32 aNumber, nsAString& aDest)
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{
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PRUnichar buf[12];
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buf[11] = 0;
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PRInt32 pos = 11;
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while (aNumber > 0) {
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--aNumber;
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PRInt32 ch = aNumber % 26;
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aNumber /= 26;
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buf[--pos] = ch + mOffset;
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}
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aDest.Append(buf + pos, (PRUint32)(11 - pos));
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}
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const char* const kTxRomanNumbers[] =
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{"", "c", "cc", "ccc", "cd", "d", "dc", "dcc", "dccc", "cm",
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"", "x", "xx", "xxx", "xl", "l", "lx", "lxx", "lxxx", "xc",
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"", "i", "ii", "iii", "iv", "v", "vi", "vii", "viii", "ix",
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"", "C", "CC", "CCC", "CD", "D", "DC", "DCC", "DCCC", "CM",
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"", "X", "XX", "XXX", "XL", "L", "LX", "LXX", "LXXX", "XC",
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"", "I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX"};
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void txRomanCounter::appendNumber(PRInt32 aNumber, nsAString& aDest)
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{
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// Numbers bigger then 3999 can't be done in roman
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if (aNumber >= 4000) {
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txDecimalCounter().appendNumber(aNumber, aDest);
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return;
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}
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while (aNumber >= 1000) {
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aDest.Append(!mTableOffset ? PRUnichar('m') : PRUnichar('M'));
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aNumber -= 1000;
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}
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PRInt32 posValue;
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// Hundreds
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posValue = aNumber / 100;
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aNumber %= 100;
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AppendASCIItoUTF16(kTxRomanNumbers[posValue + mTableOffset], aDest);
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// Tens
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posValue = aNumber / 10;
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aNumber %= 10;
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AppendASCIItoUTF16(kTxRomanNumbers[10 + posValue + mTableOffset], aDest);
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// Ones
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AppendASCIItoUTF16(kTxRomanNumbers[20 + aNumber + mTableOffset], aDest);
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}
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