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// Copyright 2014 BitPay Inc.
// Copyright 2015 Bitcoin Core Developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or https://opensource.org/licenses/mit-license.php.
#include <univalue.h>
#include <cerrno>
#include <cstdint>
#include <cstdlib>
#include <cstring>
#include <limits>
#include <locale>
#include <sstream>
#include <stdexcept>
#include <string>
#include <vector>
namespace
{
static bool ParsePrechecks(const std::string& str)
{
if (str.empty()) // No empty string allowed
return false;
if (str.size() >= 1 && (json_isspace(str[0]) || json_isspace(str[str.size()-1]))) // No padding allowed
return false;
if (str.size() != strlen(str.c_str())) // No embedded NUL characters allowed
return false;
return true;
}
bool ParseDouble(const std::string& str, double *out)
{
if (!ParsePrechecks(str))
return false;
if (str.size() >= 2 && str[0] == '0' && str[1] == 'x') // No hexadecimal floats allowed
return false;
std::istringstream text(str);
text.imbue(std::locale::classic());
double result;
text >> result;
if(out) *out = result;
return text.eof() && !text.fail();
}
}
const std::vector<std::string>& UniValue::getKeys() const
{
checkType(VOBJ);
return keys;
}
const std::vector<UniValue>& UniValue::getValues() const
{
if (typ != VOBJ && typ != VARR)
throw std::runtime_error("JSON value is not an object or array as expected");
return values;
}
bool UniValue::get_bool() const
{
checkType(VBOOL);
return isTrue();
}
const std::string& UniValue::get_str() const
{
checkType(VSTR);
return getValStr();
}
double UniValue::get_real() const
{
checkType(VNUM);
double retval;
if (!ParseDouble(getValStr(), &retval))
throw std::runtime_error("JSON double out of range");
return retval;
}
const UniValue& UniValue::get_obj() const
{
checkType(VOBJ);
return *this;
}
const UniValue& UniValue::get_array() const
{
checkType(VARR);
return *this;
}
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