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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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|
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#include <iostream> |
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#include <string> |
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#include <vector> |
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|
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#include <foreach.hpp> |
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|
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class Binary |
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{ |
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private: |
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std::vector<char> bytes; |
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public: |
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Binary(std::string& string, bool signed_ = false); |
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template <typename Type> |
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Binary(const Type& type); |
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template <typename Type> |
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Type convert(bool signed_ = false); |
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operator std::string() const; |
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}; |
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|
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Binary::Binary(std::string& string, bool signed_) : bytes(string.size() / 8, 0) |
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{ |
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if (string.find_first_not_of("01") != std::string::npos) throw; |
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|
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std::string::size_type off(string.size() % 8); |
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|
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if (off != 0) |
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{ |
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bytes.push_back(0); |
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string.insert(0, 8 - off, signed_ && string[0] == '1' ? '1' : '0'); |
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} |
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|
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std::string::size_type index(0); |
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|
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_rmforeach (std::vector<char>, byte, bytes) _rfor (char, bit, 0, 8) *byte |= (string[index++] == '1') << bit; |
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} |
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|
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template <typename Type> |
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Binary::Binary(const Type& type) : bytes(sizeof (type)) |
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{ |
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char* type_(reinterpret_cast<char*>(const_cast<Type*>(&type))); |
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|
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_mforeach (std::vector<char>, byte, bytes) *byte = *type_++; |
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} |
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|
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template <typename Type> |
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Type Binary::convert(bool signed_) |
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{ |
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Type type; |
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|
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if (sizeof (type) != bytes.size()) bytes.resize(sizeof (type), signed_ && bytes.back() >> 7 ? ~0 : 0); |
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|
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char* type_(reinterpret_cast<char*>(&type)); |
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|
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_foreach (std::vector<char>, byte, bytes) *type_++ = *byte; |
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|
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return type; |
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} |
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|
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Binary::operator std::string() const |
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{ |
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std::string string; |
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|
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_rforeach (std::vector<char>, byte, bytes) _rfor (char, bit, 0, 8) string +=1 & *byte >> bit ? '1' : '0'; |
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|
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return string; |
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} |
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|
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inline std::ostream& operator<<(std::ostream& out, const Binary& binary) |
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{ |
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return out << std::string(binary); |
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} |
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|
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int main(int argc, char* argv[]) |
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{ |
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std::string hello("Hello, World!"); |
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|
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_foreach (std::string, atom, hello) std::cout << Binary(*atom) << " = " << *atom << std::endl; |
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|
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_fori (index, -10, 11) std::cout << Binary(index) << " = " << index << std::endl; |
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|
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_foru (index, -10, 11) std::cout << Binary(index) << " = " << index << std::endl; |
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for (float index(-1.0); index < 1.0; index += 0.1) std::cout << Binary(index) << " = " << index << std::endl; |
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|
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for (double index(-1.0); index < 1.0; index += 0.1) std::cout << Binary(index) << " = " << index << std::endl; |
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|
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std::string string("101001101001"); |
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Binary binary(string, true); |
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std::cout << binary << " = " << string << std::endl; |
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|
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float value(binary.convert<float>()); |
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|
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std::cout << binary << " = " << value << std::endl << Binary(value) << " = " << value << std::endl; |
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return 0; |
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} |
