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remove stringstream dependency

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This commit is contained in:
Matthias Möller 2018-05-31 13:27:11 +02:00
parent 8efbf8d7bb
commit 64acb42aa7
3 changed files with 14 additions and 22 deletions
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15
include/nlohmann/detail/output/serializer.hpp
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@ -9,11 +9,8 @@
#include <cstddef> // size_t, ptrdiff_t
#include <cstdint> // uint8_t
#include <cstdio> // snprintf
#include <iomanip> // setfill
#include <iterator> // next
#include <limits> // numeric_limits
#include <string> // string
#include <sstream> // stringstream
#include <type_traits> // is_same
#include <nlohmann/detail/exceptions.hpp>
@ -389,9 +386,9 @@ class serializer
case UTF8_REJECT: // decode found invalid UTF-8 byte
{
std::stringstream ss;
ss << std::setw(2) << std::uppercase << std::setfill('0') << std::hex << static_cast<int>(byte);
JSON_THROW(type_error::create(316, "invalid UTF-8 byte at index " + std::to_string(i) + ": 0x" + ss.str()));
std::string sn(3, '\0');
snprintf(&sn[0], sn.size(), "%.2X", byte);
JSON_THROW(type_error::create(316, "invalid UTF-8 byte at index " + std::to_string(i) + ": 0x" + sn));
}
default: // decode found yet incomplete multi-byte code point
@ -417,9 +414,9 @@ class serializer
else
{
// we finish reading, but do not accept: string was incomplete
std::stringstream ss;
ss << std::setw(2) << std::uppercase << std::setfill('0') << std::hex << static_cast<int>(static_cast<uint8_t>(s.back()));
JSON_THROW(type_error::create(316, "incomplete UTF-8 string; last byte: 0x" + ss.str()));
std::string sn(3,'\0');
snprintf(&sn[0], sn.size(), "%.2X", s.back());
JSON_THROW(type_error::create(316, "incomplete UTF-8 string; last byte: 0x" + sn));
}
}