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295f920116
I wrote a script to do this which is attached to the bug. TBR=abarth@chromium.org BUG=435361 Review URL: https://codereview.chromium.org/736373003
108 lines
3.4 KiB
C++
108 lines
3.4 KiB
C++
/*
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* Copyright (C) 2011 Research In Motion Limited. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef SKY_ENGINE_WTF_HEXNUMBER_H_
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#define SKY_ENGINE_WTF_HEXNUMBER_H_
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#include "sky/engine/wtf/text/StringConcatenate.h"
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namespace WTF {
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enum HexConversionMode {
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Lowercase,
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Uppercase
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};
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namespace Internal {
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const LChar lowerHexDigits[17] = "0123456789abcdef";
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const LChar upperHexDigits[17] = "0123456789ABCDEF";
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inline const LChar* hexDigitsForMode(HexConversionMode mode)
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{
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return mode == Lowercase ? lowerHexDigits : upperHexDigits;
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}
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}; // namespace Internal
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template<typename T>
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inline void appendByteAsHex(unsigned char byte, T& destination, HexConversionMode mode = Uppercase)
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{
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const LChar* hexDigits = Internal::hexDigitsForMode(mode);
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destination.append(hexDigits[byte >> 4]);
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destination.append(hexDigits[byte & 0xF]);
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}
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template<typename T>
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inline void placeByteAsHexCompressIfPossible(unsigned char byte, T& destination, unsigned& index, HexConversionMode mode = Uppercase)
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{
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const LChar* hexDigits = Internal::hexDigitsForMode(mode);
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if (byte >= 0x10)
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destination[index++] = hexDigits[byte >> 4];
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destination[index++] = hexDigits[byte & 0xF];
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}
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template<typename T>
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inline void placeByteAsHex(unsigned char byte, T& destination, HexConversionMode mode = Uppercase)
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{
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const LChar* hexDigits = Internal::hexDigitsForMode(mode);
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*destination++ = hexDigits[byte >> 4];
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*destination++ = hexDigits[byte & 0xF];
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}
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template<typename T>
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inline void appendUnsignedAsHex(unsigned number, T& destination, HexConversionMode mode = Uppercase)
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{
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const LChar* hexDigits = Internal::hexDigitsForMode(mode);
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Vector<LChar, 8> result;
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do {
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result.prepend(hexDigits[number % 16]);
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number >>= 4;
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} while (number > 0);
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destination.append(result.data(), result.size());
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}
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// Same as appendUnsignedAsHex, but using exactly 'desiredDigits' for the conversion.
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template<typename T>
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inline void appendUnsignedAsHexFixedSize(unsigned number, T& destination, unsigned desiredDigits, HexConversionMode mode = Uppercase)
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{
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ASSERT(desiredDigits);
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const LChar* hexDigits = Internal::hexDigitsForMode(mode);
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Vector<LChar, 8> result;
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do {
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result.prepend(hexDigits[number % 16]);
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number >>= 4;
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} while (result.size() < desiredDigits);
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ASSERT(result.size() == desiredDigits);
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destination.append(result.data(), result.size());
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}
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} // namespace WTF
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using WTF::appendByteAsHex;
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using WTF::appendUnsignedAsHex;
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using WTF::appendUnsignedAsHexFixedSize;
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using WTF::placeByteAsHex;
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using WTF::placeByteAsHexCompressIfPossible;
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using WTF::Lowercase;
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#endif // SKY_ENGINE_WTF_HEXNUMBER_H_
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