| 1 |
// Represent |
| 2 |
// |
| 3 |
// Douglas Thrift |
| 4 |
// |
| 5 |
// $Id$ |
| 6 |
|
| 7 |
#include <iostream> |
| 8 |
#include <string> |
| 9 |
#include <vector> |
| 10 |
|
| 11 |
#include <foreach.hpp> |
| 12 |
|
| 13 |
class Binary |
| 14 |
{ |
| 15 |
private: |
| 16 |
std::vector<char> bytes; |
| 17 |
public: |
| 18 |
Binary(std::string& string, bool signed_ = false); |
| 19 |
template <typename Type> |
| 20 |
Binary(const Type& type); |
| 21 |
template <typename Type> |
| 22 |
Type convert(bool signed_ = false); |
| 23 |
operator std::string() const; |
| 24 |
}; |
| 25 |
|
| 26 |
Binary::Binary(std::string& string, bool signed_) : bytes(string.size() / 8, 0) |
| 27 |
{ |
| 28 |
std::string::size_type off(string.size() % 8); |
| 29 |
|
| 30 |
if (off != 0) |
| 31 |
{ |
| 32 |
bytes.push_back(0); |
| 33 |
string.insert(0, 8 - off, signed_ && string[0] == '1' ? '1' : '0'); |
| 34 |
} |
| 35 |
|
| 36 |
std::string::size_type index(0); |
| 37 |
|
| 38 |
_rmforeach (std::vector<char>, byte, bytes) |
| 39 |
{ |
| 40 |
_rfor (char, bit, 0, 8) |
| 41 |
{ |
| 42 |
*byte |= (string[index++] == '1') << bit; |
| 43 |
} |
| 44 |
} |
| 45 |
} |
| 46 |
|
| 47 |
template <typename Type> |
| 48 |
Binary::Binary(const Type& type) : bytes(sizeof (type)) |
| 49 |
{ |
| 50 |
char* type_(reinterpret_cast<char*>(const_cast<Type*>(&type))); |
| 51 |
|
| 52 |
_mforeach (std::vector<char>, byte, bytes) *byte = *type_++; |
| 53 |
} |
| 54 |
|
| 55 |
template <typename Type> |
| 56 |
Type Binary::convert(bool signed_) |
| 57 |
{ |
| 58 |
Type type; |
| 59 |
|
| 60 |
if (sizeof (type) != bytes.size()) bytes.resize(sizeof (type), signed_ && bytes.back() >> 7 ? ~0 : 0); |
| 61 |
|
| 62 |
char* type_(reinterpret_cast<char*>(&type)); |
| 63 |
|
| 64 |
_foreach (std::vector<char>, byte, bytes) *type_++ = *byte; |
| 65 |
|
| 66 |
return type; |
| 67 |
} |
| 68 |
|
| 69 |
Binary::operator std::string() const |
| 70 |
{ |
| 71 |
std::string string; |
| 72 |
|
| 73 |
_rforeach (std::vector<char>, byte, bytes) _rfor (char, bit, 0, 8) string +=1 & *byte >> bit ? '1' : '0'; |
| 74 |
|
| 75 |
return string; |
| 76 |
} |
| 77 |
|
| 78 |
inline std::ostream& operator<<(std::ostream& out, const Binary& binary) |
| 79 |
{ |
| 80 |
return out << std::string(binary); |
| 81 |
} |
| 82 |
|
| 83 |
int main(int argc, char* argv[]) |
| 84 |
{ |
| 85 |
std::string hello("Hello, World!"); |
| 86 |
|
| 87 |
_foreach (std::string, atom, hello) |
| 88 |
{ |
| 89 |
std::cout << Binary(*atom) << " = " << *atom << std::endl; |
| 90 |
} |
| 91 |
|
| 92 |
_fori (index, -10, 11) |
| 93 |
{ |
| 94 |
std::cout << Binary(index) << " = " << index << std::endl; |
| 95 |
} |
| 96 |
|
| 97 |
_foru (index, -10, 11) |
| 98 |
{ |
| 99 |
std::cout << Binary(index) << " = " << index << std::endl; |
| 100 |
} |
| 101 |
|
| 102 |
for (float index(-1.0); index < 1.0; index += 0.1) |
| 103 |
{ |
| 104 |
std::cout << Binary(index) << " = " << index << std::endl; |
| 105 |
} |
| 106 |
|
| 107 |
for (double index(-1.0); index < 1.0; index += 0.1) |
| 108 |
{ |
| 109 |
std::cout << Binary(index) << " = " << index << std::endl; |
| 110 |
} |
| 111 |
|
| 112 |
std::string string("101001101001"); |
| 113 |
Binary binary(string, true); |
| 114 |
|
| 115 |
std::cout << binary << " = " << string << std::endl; |
| 116 |
|
| 117 |
float value(binary.convert<float>()); |
| 118 |
|
| 119 |
std::cout << binary << " = " << value << std::endl << Binary(value) << " = " << value << std::endl; |
| 120 |
|
| 121 |
return 0; |
| 122 |
} |
