Electroneum
io.h
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30 // Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
31 
32 #include <cstddef>
33 #include <ios>
34 #include <iostream>
35 #include <type_traits>
36 #include <vector>
37 
38 inline bool hexdecode(const char *from, std::size_t length, void *to) {
39  std::size_t i;
40  for (i = 0; i < length; i++) {
41  int v = 0;
42  if (from[2 * i] >= '0' && from[2 * i] <= '9') {
43  v = from[2 * i] - '0';
44  } else if (from[2 * i] >= 'a' && from[2 * i] <= 'f') {
45  v = from[2 * i] - 'a' + 10;
46  } else {
47  return false;
48  }
49  v <<= 4;
50  if (from[2 * i + 1] >= '0' && from[2 * i + 1] <= '9') {
51  v |= from[2 * i + 1] - '0';
52  } else if (from[2 * i + 1] >= 'a' && from[2 * i + 1] <= 'f') {
53  v |= from[2 * i + 1] - 'a' + 10;
54  } else {
55  return false;
56  }
57  *(reinterpret_cast<unsigned char *>(to) + i) = v;
58  }
59  return true;
60 }
61 
62 inline void get(std::istream &input, bool &res) {
63  std::string sres;
64  input >> sres;
65  if (sres == "false") {
66  res = false;
67  } else if (sres == "true") {
68  res = true;
69  } else {
70  input.setstate(std::ios_base::failbit);
71  }
72 }
73 
74 template<typename T>
76 get(std::istream &input, T &res) {
77  input >> res;
78 }
79 
80 inline void getvar(std::istream &input, std::size_t length, void *res) {
81  std::string sres;
82  input >> sres;
83  if (sres.length() != 2 * length || !hexdecode(sres.data(), length, res)) {
84  input.setstate(std::ios_base::failbit);
85  }
86 }
87 
88 template<typename T>
90 get(std::istream &input, T &res) {
91  getvar(input, sizeof(T), &res);
92 }
93 
94 inline void get(std::istream &input, std::vector<char> &res) {
95  std::string sres;
96  input >> sres;
97  if (sres == "x") {
98  res.clear();
99  } else if (sres.length() % 2 != 0) {
100  input.setstate(std::ios_base::failbit);
101  } else {
102  std::size_t length = sres.length() / 2;
103  res.resize(length);
104  if (!hexdecode(sres.data(), length, res.data())) {
105  input.setstate(std::ios_base::failbit);
106  }
107  }
108 }
109 
110 #if !defined(_MSC_VER) || _MSC_VER >= 1800
111 
112 template<typename T, typename... TT>
113 typename std::enable_if<(sizeof...(TT) > 0), void>::type
114 get(std::istream &input, T &res, TT &... resres) {
115  get(input, res);
116  get(input, resres...);
117 }
118 
119 #else
120 #include <boost/preprocessor/cat.hpp>
121 #include <boost/preprocessor/repetition/enum_binary_params.hpp>
122 #include <boost/preprocessor/repetition/enum_params.hpp>
123 #include <boost/preprocessor/repetition/repeat.hpp>
124 #include <boost/preprocessor/repetition/repeat_from_to.hpp>
125 
126 #define NESTED_GET(z, n, data) get(input, BOOST_PP_CAT(res, n));
127 #define GET(z, n, data) \
128 template<BOOST_PP_ENUM_PARAMS(n, typename T)> \
129 void get(std::istream &input, BOOST_PP_ENUM_BINARY_PARAMS(n, T, &res)) { \
130  BOOST_PP_REPEAT(n, NESTED_GET, ~) \
131 }
132 BOOST_PP_REPEAT_FROM_TO(2, 5, GET, ~)
133 
134 #endif
const char * res
Definition: hmac_keccak.cpp:41
const uint32_t T[512]
::std::string string
Definition: gtest-port.h:1097
void getvar(std::istream &input, std::size_t length, void *res)
Definition: io.h:80
const GenericPointer< typename T::ValueType > T2 value
Definition: pointer.h:1225
typename std::enable_if< C >::type enable_if
Definition: expect.h:76
bool hexdecode(const char *from, std::size_t length, void *to)
Definition: io.h:38