15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2011 Research In Motion Limited. All rights reserved. 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * This library is free software; you can redistribute it and/or 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modify it under the terms of the GNU Library General Public 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * License as published by the Free Software Foundation; either 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * version 2 of the License, or (at your option) any later version. 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * This library is distributed in the hope that it will be useful, 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * but WITHOUT ANY WARRANTY; without even the implied warranty of 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Library General Public License for more details. 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * You should have received a copy of the GNU Library General Public License 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * along with this library; see the file COPYING.LIB. If not, write to 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Boston, MA 02110-1301, USA. 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifndef HexNumber_h 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define HexNumber_h 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 23591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch#include "wtf/text/StringConcatenate.h" 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)namespace WTF { 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)enum HexConversionMode { 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) Lowercase, 295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) Uppercase 305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)}; 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)namespace Internal { 335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 34926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)const LChar lowerHexDigits[17] = "0123456789abcdef"; 35926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)const LChar upperHexDigits[17] = "0123456789ABCDEF"; 36926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)inline const LChar* hexDigitsForMode(HexConversionMode mode) 375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return mode == Lowercase ? lowerHexDigits : upperHexDigits; 395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)}; // namespace Internal 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)template<typename T> 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)inline void appendByteAsHex(unsigned char byte, T& destination, HexConversionMode mode = Uppercase) 455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 46926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) const LChar* hexDigits = Internal::hexDigitsForMode(mode); 475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) destination.append(hexDigits[byte >> 4]); 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) destination.append(hexDigits[byte & 0xF]); 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)template<typename T> 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)inline void placeByteAsHexCompressIfPossible(unsigned char byte, T& destination, unsigned& index, HexConversionMode mode = Uppercase) 535c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 54926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) const LChar* hexDigits = Internal::hexDigitsForMode(mode); 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (byte >= 0x10) 565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) destination[index++] = hexDigits[byte >> 4]; 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) destination[index++] = hexDigits[byte & 0xF]; 585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)template<typename T> 615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)inline void placeByteAsHex(unsigned char byte, T& destination, HexConversionMode mode = Uppercase) 625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 63926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) const LChar* hexDigits = Internal::hexDigitsForMode(mode); 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) *destination++ = hexDigits[byte >> 4]; 655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) *destination++ = hexDigits[byte & 0xF]; 665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)template<typename T> 695c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)inline void appendUnsignedAsHex(unsigned number, T& destination, HexConversionMode mode = Uppercase) 705c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 71926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) const LChar* hexDigits = Internal::hexDigitsForMode(mode); 72926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) Vector<LChar, 8> result; 735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) do { 745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) result.prepend(hexDigits[number % 16]); 755c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) number >>= 4; 765c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } while (number > 0); 775c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) destination.append(result.data(), result.size()); 795c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 805c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 815c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)// Same as appendUnsignedAsHex, but using exactly 'desiredDigits' for the conversion. 825c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)template<typename T> 835c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)inline void appendUnsignedAsHexFixedSize(unsigned number, T& destination, unsigned desiredDigits, HexConversionMode mode = Uppercase) 845c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ASSERT(desiredDigits); 865c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 87926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) const LChar* hexDigits = Internal::hexDigitsForMode(mode); 88926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) Vector<LChar, 8> result; 895c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) do { 905c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) result.prepend(hexDigits[number % 16]); 915c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) number >>= 4; 925c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } while (result.size() < desiredDigits); 935c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 945c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ASSERT(result.size() == desiredDigits); 955c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) destination.append(result.data(), result.size()); 965c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 975c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 985c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} // namespace WTF 995c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1005c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)using WTF::appendByteAsHex; 1015c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)using WTF::appendUnsignedAsHex; 1025c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)using WTF::appendUnsignedAsHexFixedSize; 1035c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)using WTF::placeByteAsHex; 1045c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)using WTF::placeByteAsHexCompressIfPossible; 1055c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)using WTF::Lowercase; 1065c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1075c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif // HexNumber_h 108