Electroneum
io.h File Reference
#include <cstddef>
#include <ios>
#include <iostream>
#include <type_traits>
#include <vector>
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Functions

bool hexdecode (const char *from, std::size_t length, void *to)
 
void get (std::istream &input, bool &res)
 
template<typename T >
std::enable_if< std::is_integral< T >::value, void >::type get (std::istream &input, T &res)
 
void getvar (std::istream &input, std::size_t length, void *res)
 
template<typename T >
std::enable_if< std::is_standard_layout< T >::value &&!std::is_scalar< T >::value, void >::type get (std::istream &input, T &res)
 
void get (std::istream &input, std::vector< char > &res)
 
template<typename T , typename... TT>
std::enable_if<(sizeof...(TT) > 0), void >::type get (std::istream &input, T &res, TT &... resres)
 

Function Documentation

◆ get() [1/5]

void get ( std::istream &  input,
bool res 
)
inline

Definition at line 62 of file io.h.

62  {
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 }
const char * res
Definition: hmac_keccak.cpp:41
::std::string string
Definition: gtest-port.h:1097
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◆ get() [2/5]

template<typename T >
std::enable_if<std::is_integral<T>::value, void>::type get ( std::istream &  input,
T res 
)

Definition at line 76 of file io.h.

76  {
77  input >> res;
78 }
const char * res
Definition: hmac_keccak.cpp:41

◆ get() [3/5]

template<typename T >
std::enable_if<std::is_standard_layout<T>::value && !std::is_scalar<T>::value, void>::type get ( std::istream &  input,
T res 
)

Definition at line 90 of file io.h.

90  {
91  getvar(input, sizeof(T), &res);
92 }
const char * res
Definition: hmac_keccak.cpp:41
const uint32_t T[512]
void getvar(std::istream &input, std::size_t length, void *res)
Definition: io.h:80
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◆ get() [4/5]

void get ( std::istream &  input,
std::vector< char > &  res 
)
inline

Definition at line 94 of file io.h.

94  {
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 }
const char * res
Definition: hmac_keccak.cpp:41
::std::string string
Definition: gtest-port.h:1097
bool hexdecode(const char *from, std::size_t length, void *to)
Definition: io.h:38
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◆ get() [5/5]

template<typename T , typename... TT>
std::enable_if<(sizeof...(TT) > 0), void>::type get ( std::istream &  input,
T res,
TT &...  resres 
)

Definition at line 114 of file io.h.

114  {
115  get(input, res);
116  get(input, resres...);
117 }
const char * res
Definition: hmac_keccak.cpp:41

◆ getvar()

void getvar ( std::istream &  input,
std::size_t  length,
void *  res 
)
inline

Definition at line 80 of file io.h.

80  {
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 }
const char * res
Definition: hmac_keccak.cpp:41
::std::string string
Definition: gtest-port.h:1097
bool hexdecode(const char *from, std::size_t length, void *to)
Definition: io.h:38
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◆ hexdecode()

bool hexdecode ( const char *  from,
std::size_t  length,
void *  to 
)
inline

Definition at line 38 of file io.h.

38  {
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 }
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