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douglas |
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// Represent |
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// |
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// Douglas Thrift |
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// |
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// $Id$ |
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#include "Hexadecimal.hpp" |
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Hexadecimal::Hexadecimal(const ext::String& string, bool signed_) : Binary(string.GetSize() / 2, 0) |
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{ |
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if (string.IsEmpty()) |
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{ |
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bytes.InsertLast(0); |
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return; |
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} |
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size_t index(string.GetSize() % 2), offset(index); |
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douglas |
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_rmforeach (ext::Vector<byte_t>, byte, bytes) _rfor (byte_t, half, 0, 2) *byte |= hex(string[index++]) << half * 4; |
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douglas |
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if (offset != 0) |
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{ |
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bytes.InsertLast(0); |
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bytes.Last() |= hex(string[0]); |
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bytes.Last() |= signed_ && bytes.Last() < 8 ? 0xF0 : 0; |
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} |
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} |
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Hexadecimal::operator ext::String() const |
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{ |
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ext::String string; |
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_rforeach (ext::Vector<byte_t>, byte, bytes) _rfor (byte_t, half, 0, 2) |
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{ |
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byte_t hex(0xF & *byte >> half * 4); |
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if (hex < 0xA) hex += '0'; else hex += 'A' - 0xA; |
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string.InsertLast(hex); |
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} |
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return string; |
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} |
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douglas |
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inline byte_t Hexadecimal::hex(const ext::CodePoint& atom) |
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{ |
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if (atom >= '0' && atom <= '9') return atom - '0'; else if (atom >= 'a' && atom <= 'f') return atom - 'a' + 0xA; else if (atom >= 'A' && atom <= 'F') return atom - 'A' + 0xA; else return 0; |
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} |
