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//
// String.h
//
// Library: Foundation
// Package: Core
// Module: String
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/JSONString.h"
#include "Poco/UTF8String.h"
#include <ostream>
namespace {
template<typename T, typename S>
struct WriteFunc
{
typedef T& (T::*Type)(const char* s, S n);
};
template<typename T, typename S>
void writeString(const std::string &value, T& obj, typename WriteFunc<T, S>::Type write, int options)
{
bool wrap = ((options & Poco::JSON_WRAP_STRINGS) != 0);
bool escapeAllUnicode = ((options & Poco::JSON_ESCAPE_UNICODE) != 0);
if (value.size() == 0)
{
if(wrap) (obj.*write)("\"\"", 2);
return;
}
if(wrap) (obj.*write)("\"", 1);
if(escapeAllUnicode)
{
std::string str = Poco::UTF8::escape(value.begin(), value.end(), true);
(obj.*write)(str.c_str(), str.size());
}
else
{
for(std::string::const_iterator it = value.begin(), end = value.end(); it != end; ++it)
{
// Forward slash isn't strictly required by JSON spec, but some parsers expect it
if((*it >= 0 && *it <= 31) || (*it == '"') || (*it == '\\') || (*it == '/'))
{
std::string str = Poco::UTF8::escape(it, it + 1, true);
(obj.*write)(str.c_str(), str.size());
}else (obj.*write)(&(*it), 1);
}
}
if(wrap) (obj.*write)("\"", 1);
};
}
namespace Poco {
void toJSON(const std::string& value, std::ostream& out, bool wrap)
{
int options = (wrap ? Poco::JSON_WRAP_STRINGS : 0);
writeString<std::ostream, std::streamsize>(value, out, &std::ostream::write, options);
}
std::string toJSON(const std::string& value, bool wrap)
{
int options = (wrap ? Poco::JSON_WRAP_STRINGS : 0);
std::string ret;
writeString<std::string,
std::string::size_type>(value, ret, &std::string::append, options);
return ret;
}
void toJSON(const std::string& value, std::ostream& out, int options)
{
writeString<std::ostream, std::streamsize>(value, out, &std::ostream::write, options);
}
std::string toJSON(const std::string& value, int options)
{
std::string ret;
writeString<std::string, std::string::size_type>(value, ret, &std::string::append, options);
return ret;
}
} // namespace Poco
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