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Prepare to_raw_string

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This commit is contained in:
Baptiste Wicht 2016-08-01 13:49:40 +02:00
parent f61b9b0e8d
commit 0540deb5ad
1 changed files with 77 additions and 0 deletions
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77
tstl/include/string.hpp
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@ -627,6 +627,83 @@ inline std::string to_string<int32_t>(const int32_t& value){
return to_string(static_cast<int64_t>(value));
}
template<typename T>
void to_raw_string(const T& value, char* buffer, size_t n);
template<>
inline void to_raw_string<uint64_t>(const uint64_t& value, char* buffer, size_t n){
if(n < 20){
//TODO Print an error ?
return;
}
if(value == 0){
buffer[0] = '0';
buffer[1] = '\0';
return;
}
std::string s;
char int_buffer[20];
int i = 0;
auto rem = value;
while(rem != 0){
int_buffer[i++] = '0' + rem % 10;
rem /= 10;
}
--i;
size_t j = 0;
for(; i >= 0; --i){
buffer[j++] = int_buffer[i];
}
buffer[j] = '\0';
}
template<>
inline void to_raw_string<int64_t>(const int64_t& value, char* buffer, size_t n){
if(value < 0){
*buffer = '-';
to_raw_string(static_cast<uint64_t>(value), buffer + 1, n - 1);
} else {
to_raw_string(static_cast<uint64_t>(value), buffer, n);
}
}
template<>
inline void to_raw_string<uint8_t>(const uint8_t& value, char* buffer, size_t n){
to_raw_string(static_cast<uint64_t>(value), buffer, n);
}
template<>
inline void to_raw_string<uint16_t>(const uint16_t& value, char* buffer, size_t n){
to_raw_string(static_cast<uint64_t>(value), buffer, n);
}
template<>
inline void to_raw_string<uint32_t>(const uint32_t& value, char* buffer, size_t n){
to_raw_string(static_cast<uint64_t>(value), buffer, n);
}
template<>
inline void to_raw_string<int8_t>(const int8_t& value, char* buffer, size_t n){
to_raw_string(static_cast<uint64_t>(value), buffer, n);
}
template<>
inline void to_raw_string<int16_t>(const int16_t& value, char* buffer, size_t n){
to_raw_string(static_cast<uint64_t>(value), buffer, n);
}
template<>
inline void to_raw_string<int32_t>(const int32_t& value, char* buffer, size_t n){
to_raw_string(static_cast<uint64_t>(value), buffer, n);
}
} //end of namespace std
#endif