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117 lines
2 KiB
C++
117 lines
2 KiB
C++
#ifndef COMPAT_H
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#define COMPAT_H
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#include <clocale>
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#include <string>
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#ifdef NO_CPP11_STRING
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#include <cerrno>
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#include <climits>
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#include <cmath>
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#include <cstdlib>
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#include <sstream>
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#include <stdexcept>
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#endif
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namespace cpt
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{
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static struct lconv* localeconv()
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{
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#ifdef NO_CPP11_STRING
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static struct lconv result;
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result.decimal_point = nullptr;
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result.thousands_sep = nullptr;
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return &result;
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#else
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return std::localeconv();
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#endif
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}
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template <typename T>
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static std::string to_string(const T& t)
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{
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#ifdef NO_CPP11_STRING
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std::stringstream ss;
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ss << t;
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return ss.str();
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#else
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return std::to_string(t);
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#endif
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}
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static long stoul(const std::string& str)
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{
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#ifdef NO_CPP11_STRING
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errno = 0;
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char* temp;
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long val = strtol(str.c_str(), &temp, 10);
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if (temp == str.c_str() || *temp != '\0')
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throw std::invalid_argument("stoi");
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if (((val == LONG_MIN) || (val == LONG_MAX)) && (errno == ERANGE))
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throw std::out_of_range("stoi");
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return val;
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#else
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return std::stoul(str);
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#endif
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}
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static int stoi(const std::string& str)
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{
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#ifdef NO_CPP11_STRING
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return cpt::stoul(str);
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#else
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return std::stoi(str);
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#endif
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}
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static int stoi(const std::string& str, int def)
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{
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try
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{
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return cpt::stoi(str);
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}
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catch(...)
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{
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return def;
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}
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}
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static double stod(const std::string& str)
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{
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#ifdef NO_CPP11_STRING
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errno = 0;
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char* temp;
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double val = strtod(str.c_str(), &temp);
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if (temp == str.c_str() || *temp != '\0')
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throw std::invalid_argument("stod");
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if ((val == HUGE_VAL) && (errno == ERANGE))
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throw std::out_of_range("stod");
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return val;
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#else
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return std::stod(str.c_str());
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#endif
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}
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static long double strtold(const char* str, char** endptr)
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{
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#ifdef NO_CPP11_STRING
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return cpt::stod(str);
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#else
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return std::strtold(str, endptr);
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#endif
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}
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static float strtof(const char* str, char** endptr)
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{
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#ifdef NO_CPP11_STRING
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return (float)cpt::stod(str);
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#else
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return std::strtof(str, endptr);
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#endif
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}
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}
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#endif
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