Update JsonCPP to 1.8.3 (#6466)

* Update JsonCPP to 1.8.3

* Fix deprecated functions

Json::FastWriter, Json::StyledWriter and Json::Reader are marked deprecated since 1.1 and are deprecated in 0.8 but not shown at compilation time.

Use new methods to serialize/deserialize

10 files changed, 549 insertions, 103 deletions

diff --git a/lib/jsoncpp/json/UPDATING b/lib/jsoncpp/json/UPDATING
index d00076601..f0226e8ee 100644
--- a/lib/jsoncpp/json/UPDATING
+++ b/lib/jsoncpp/json/UPDATING
@@ -1,16 +1,7 @@
 #!/bin/sh
 cd ..
-svn co https://jsoncpp.svn.sourceforge.net/svnroot/jsoncpp/trunk/jsoncpp jsoncpp
-svn up jsoncpp
+git clone https://github.com/open-source-parsers/jsoncpp -b 1.8.3 --depth 1
 cd jsoncpp
 python amalgamate.py
-cp -R dist/json ..
-cp dist/jsoncpp.cpp ../json
-
-# maybe you need to patch:
-# src/json/jsoncpp.cpp:
-# -#include <json/json.h>
-# +#include "json/json.h"
-
-#svn export --force https://jsoncpp.svn.sourceforge.net/svnroot/jsoncpp/trunk/jsoncpp/src/lib_json json
-#svn export --force https://jsoncpp.svn.sourceforge.net/svnroot/jsoncpp/trunk/jsoncpp/include/json json
+cp -R dist/json ../json
+cp dist/jsoncpp.cpp ..
diff --git a/lib/jsoncpp/json/json-forwards.h b/lib/jsoncpp/json/json-forwards.h
new file mode 100644
index 000000000..60d3bd0be
--- /dev/null
+++ b/lib/jsoncpp/json/json-forwards.h
@@ -0,0 +1,333 @@
+/// Json-cpp amalgated forward header (http://jsoncpp.sourceforge.net/).
+/// It is intended to be used with #include "json/json-forwards.h"
+/// This header provides forward declaration for all JsonCpp types.
+
+// //////////////////////////////////////////////////////////////////////
+// Beginning of content of file: LICENSE
+// //////////////////////////////////////////////////////////////////////
+
+/*
+The JsonCpp library's source code, including accompanying documentation, 
+tests and demonstration applications, are licensed under the following
+conditions...
+
+Baptiste Lepilleur and The JsonCpp Authors explicitly disclaim copyright in all 
+jurisdictions which recognize such a disclaimer. In such jurisdictions, 
+this software is released into the Public Domain.
+
+In jurisdictions which do not recognize Public Domain property (e.g. Germany as of
+2010), this software is Copyright (c) 2007-2010 by Baptiste Lepilleur and
+The JsonCpp Authors, and is released under the terms of the MIT License (see below).
+
+In jurisdictions which recognize Public Domain property, the user of this 
+software may choose to accept it either as 1) Public Domain, 2) under the 
+conditions of the MIT License (see below), or 3) under the terms of dual 
+Public Domain/MIT License conditions described here, as they choose.
+
+The MIT License is about as close to Public Domain as a license can get, and is
+described in clear, concise terms at:
+
+   http://en.wikipedia.org/wiki/MIT_License
+   
+The full text of the MIT License follows:
+
+========================================================================
+Copyright (c) 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use, copy,
+modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+========================================================================
+(END LICENSE TEXT)
+
+The MIT license is compatible with both the GPL and commercial
+software, affording one all of the rights of Public Domain with the
+minor nuisance of being required to keep the above copyright notice
+and license text in the source code. Note also that by accepting the
+Public Domain "license" you can re-license your copy using whatever
+license you like.
+
+*/
+
+// //////////////////////////////////////////////////////////////////////
+// End of content of file: LICENSE
+// //////////////////////////////////////////////////////////////////////
+
+
+
+
+
+#ifndef JSON_FORWARD_AMALGATED_H_INCLUDED
+# define JSON_FORWARD_AMALGATED_H_INCLUDED
+/// If defined, indicates that the source file is amalgated
+/// to prevent private header inclusion.
+#define JSON_IS_AMALGAMATION
+
+// //////////////////////////////////////////////////////////////////////
+// Beginning of content of file: include/json/config.h
+// //////////////////////////////////////////////////////////////////////
+
+// Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
+// Distributed under MIT license, or public domain if desired and
+// recognized in your jurisdiction.
+// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
+
+#ifndef JSON_CONFIG_H_INCLUDED
+#define JSON_CONFIG_H_INCLUDED
+#include <stddef.h>
+#include <string> //typedef String
+#include <stdint.h> //typedef int64_t, uint64_t
+
+/// If defined, indicates that json library is embedded in CppTL library.
+//# define JSON_IN_CPPTL 1
+
+/// If defined, indicates that json may leverage CppTL library
+//#  define JSON_USE_CPPTL 1
+/// If defined, indicates that cpptl vector based map should be used instead of
+/// std::map
+/// as Value container.
+//#  define JSON_USE_CPPTL_SMALLMAP 1
+
+// If non-zero, the library uses exceptions to report bad input instead of C
+// assertion macros. The default is to use exceptions.
+#ifndef JSON_USE_EXCEPTION
+#define JSON_USE_EXCEPTION 1
+#endif
+
+/// If defined, indicates that the source file is amalgated
+/// to prevent private header inclusion.
+/// Remarks: it is automatically defined in the generated amalgated header.
+// #define JSON_IS_AMALGAMATION
+
+#ifdef JSON_IN_CPPTL
+#include <cpptl/config.h>
+#ifndef JSON_USE_CPPTL
+#define JSON_USE_CPPTL 1
+#endif
+#endif
+
+#ifdef JSON_IN_CPPTL
+#define JSON_API CPPTL_API
+#elif defined(JSON_DLL_BUILD)
+#if defined(_MSC_VER) || defined(__MINGW32__)
+#define JSON_API __declspec(dllexport)
+#define JSONCPP_DISABLE_DLL_INTERFACE_WARNING
+#endif // if defined(_MSC_VER)
+#elif defined(JSON_DLL)
+#if defined(_MSC_VER) || defined(__MINGW32__)
+#define JSON_API __declspec(dllimport)
+#define JSONCPP_DISABLE_DLL_INTERFACE_WARNING
+#endif // if defined(_MSC_VER)
+#endif // ifdef JSON_IN_CPPTL
+#if !defined(JSON_API)
+#define JSON_API
+#endif
+
+// If JSON_NO_INT64 is defined, then Json only support C++ "int" type for
+// integer
+// Storages, and 64 bits integer support is disabled.
+// #define JSON_NO_INT64 1
+
+#if defined(_MSC_VER) // MSVC
+#  if _MSC_VER <= 1200 // MSVC 6
+    // Microsoft Visual Studio 6 only support conversion from __int64 to double
+    // (no conversion from unsigned __int64).
+#    define JSON_USE_INT64_DOUBLE_CONVERSION 1
+    // Disable warning 4786 for VS6 caused by STL (identifier was truncated to '255'
+    // characters in the debug information)
+    // All projects I've ever seen with VS6 were using this globally (not bothering
+    // with pragma push/pop).
+#    pragma warning(disable : 4786)
+#  endif // MSVC 6
+
+#  if _MSC_VER >= 1500 // MSVC 2008
+    /// Indicates that the following function is deprecated.
+#    define JSONCPP_DEPRECATED(message) __declspec(deprecated(message))
+#  endif
+
+#endif // defined(_MSC_VER)
+
+// In c++11 the override keyword allows you to explicity define that a function
+// is intended to override the base-class version.  This makes the code more
+// managable and fixes a set of common hard-to-find bugs.
+#if __cplusplus >= 201103L
+# define JSONCPP_OVERRIDE override
+# define JSONCPP_NOEXCEPT noexcept
+#elif defined(_MSC_VER) && _MSC_VER > 1600 && _MSC_VER < 1900
+# define JSONCPP_OVERRIDE override
+# define JSONCPP_NOEXCEPT throw()
+#elif defined(_MSC_VER) && _MSC_VER >= 1900
+# define JSONCPP_OVERRIDE override
+# define JSONCPP_NOEXCEPT noexcept
+#else
+# define JSONCPP_OVERRIDE
+# define JSONCPP_NOEXCEPT throw()
+#endif
+
+#ifndef JSON_HAS_RVALUE_REFERENCES
+
+#if defined(_MSC_VER) && _MSC_VER >= 1600 // MSVC >= 2010
+#define JSON_HAS_RVALUE_REFERENCES 1
+#endif // MSVC >= 2010
+
+#ifdef __clang__
+#if __has_feature(cxx_rvalue_references)
+#define JSON_HAS_RVALUE_REFERENCES 1
+#endif  // has_feature
+
+#elif defined __GNUC__ // not clang (gcc comes later since clang emulates gcc)
+#if defined(__GXX_EXPERIMENTAL_CXX0X__) || (__cplusplus >= 201103L)
+#define JSON_HAS_RVALUE_REFERENCES 1
+#endif  // GXX_EXPERIMENTAL
+
+#endif // __clang__ || __GNUC__
+
+#endif // not defined JSON_HAS_RVALUE_REFERENCES
+
+#ifndef JSON_HAS_RVALUE_REFERENCES
+#define JSON_HAS_RVALUE_REFERENCES 0
+#endif
+
+#ifdef __clang__
+#  if __has_extension(attribute_deprecated_with_message)
+#    define JSONCPP_DEPRECATED(message)  __attribute__ ((deprecated(message)))
+#  endif
+#elif defined __GNUC__ // not clang (gcc comes later since clang emulates gcc)
+#  if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5))
+#    define JSONCPP_DEPRECATED(message)  __attribute__ ((deprecated(message)))
+#  elif (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
+#    define JSONCPP_DEPRECATED(message)  __attribute__((__deprecated__))
+#  endif  // GNUC version
+#endif // __clang__ || __GNUC__
+
+#if !defined(JSONCPP_DEPRECATED)
+#define JSONCPP_DEPRECATED(message)
+#endif // if !defined(JSONCPP_DEPRECATED)
+
+#if __GNUC__ >= 6
+#  define JSON_USE_INT64_DOUBLE_CONVERSION 1
+#endif
+
+#if !defined(JSON_IS_AMALGAMATION)
+
+# include "version.h"
+
+# if JSONCPP_USING_SECURE_MEMORY
+#  include "allocator.h" //typedef Allocator
+# endif
+
+#endif // if !defined(JSON_IS_AMALGAMATION)
+
+namespace Json {
+typedef int Int;
+typedef unsigned int UInt;
+#if defined(JSON_NO_INT64)
+typedef int LargestInt;
+typedef unsigned int LargestUInt;
+#undef JSON_HAS_INT64
+#else                 // if defined(JSON_NO_INT64)
+// For Microsoft Visual use specific types as long long is not supported
+#if defined(_MSC_VER) // Microsoft Visual Studio
+typedef __int64 Int64;
+typedef unsigned __int64 UInt64;
+#else                 // if defined(_MSC_VER) // Other platforms, use long long
+typedef int64_t Int64;
+typedef uint64_t UInt64;
+#endif // if defined(_MSC_VER)
+typedef Int64 LargestInt;
+typedef UInt64 LargestUInt;
+#define JSON_HAS_INT64
+#endif // if defined(JSON_NO_INT64)
+#if JSONCPP_USING_SECURE_MEMORY
+#define JSONCPP_STRING        std::basic_string<char, std::char_traits<char>, Json::SecureAllocator<char> >
+#define JSONCPP_OSTRINGSTREAM std::basic_ostringstream<char, std::char_traits<char>, Json::SecureAllocator<char> >
+#define JSONCPP_OSTREAM       std::basic_ostream<char, std::char_traits<char>>
+#define JSONCPP_ISTRINGSTREAM std::basic_istringstream<char, std::char_traits<char>, Json::SecureAllocator<char> >
+#define JSONCPP_ISTREAM       std::istream
+#else
+#define JSONCPP_STRING        std::string
+#define JSONCPP_OSTRINGSTREAM std::ostringstream
+#define JSONCPP_OSTREAM       std::ostream
+#define JSONCPP_ISTRINGSTREAM std::istringstream
+#define JSONCPP_ISTREAM       std::istream
+#endif // if JSONCPP_USING_SECURE_MEMORY
+} // end namespace Json
+
+#endif // JSON_CONFIG_H_INCLUDED
+
+// //////////////////////////////////////////////////////////////////////
+// End of content of file: include/json/config.h
+// //////////////////////////////////////////////////////////////////////
+
+
+
+
+
+
+// //////////////////////////////////////////////////////////////////////
+// Beginning of content of file: include/json/forwards.h
+// //////////////////////////////////////////////////////////////////////
+
+// Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
+// Distributed under MIT license, or public domain if desired and
+// recognized in your jurisdiction.
+// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
+
+#ifndef JSON_FORWARDS_H_INCLUDED
+#define JSON_FORWARDS_H_INCLUDED
+
+#if !defined(JSON_IS_AMALGAMATION)
+#include "config.h"
+#endif // if !defined(JSON_IS_AMALGAMATION)
+
+namespace Json {
+
+// writer.h
+class FastWriter;
+class StyledWriter;
+
+// reader.h
+class Reader;
+
+// features.h
+class Features;
+
+// value.h
+typedef unsigned int ArrayIndex;
+class StaticString;
+class Path;
+class PathArgument;
+class Value;
+class ValueIteratorBase;
+class ValueIterator;
+class ValueConstIterator;
+
+} // namespace Json
+
+#endif // JSON_FORWARDS_H_INCLUDED
+
+// //////////////////////////////////////////////////////////////////////
+// End of content of file: include/json/forwards.h
+// //////////////////////////////////////////////////////////////////////
+
+
+
+
+
+#endif //ifndef JSON_FORWARD_AMALGATED_H_INCLUDED
diff --git a/lib/jsoncpp/json/json.h b/lib/jsoncpp/json/json.h
index 02a31f4a0..ac2e88472 100644
--- a/lib/jsoncpp/json/json.h
+++ b/lib/jsoncpp/json/json.h
@@ -10,13 +10,13 @@ The JsonCpp library's source code, including accompanying documentation,
 tests and demonstration applications, are licensed under the following
 conditions...
 
-The author (Baptiste Lepilleur) explicitly disclaims copyright in all 
+Baptiste Lepilleur and The JsonCpp Authors explicitly disclaim copyright in all 
 jurisdictions which recognize such a disclaimer. In such jurisdictions, 
 this software is released into the Public Domain.
 
 In jurisdictions which do not recognize Public Domain property (e.g. Germany as of
-2010), this software is Copyright (c) 2007-2010 by Baptiste Lepilleur, and is
-released under the terms of the MIT License (see below).
+2010), this software is Copyright (c) 2007-2010 by Baptiste Lepilleur and
+The JsonCpp Authors, and is released under the terms of the MIT License (see below).
 
 In jurisdictions which recognize Public Domain property, the user of this 
 software may choose to accept it either as 1) Public Domain, 2) under the 
@@ -31,7 +31,7 @@ described in clear, concise terms at:
 The full text of the MIT License follows:
 
 ========================================================================
-Copyright (c) 2007-2010 Baptiste Lepilleur
+Copyright (c) 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
 
 Permission is hereby granted, free of charge, to any person
 obtaining a copy of this software and associated documentation
@@ -87,10 +87,10 @@ license you like.
 #ifndef JSON_VERSION_H_INCLUDED
 # define JSON_VERSION_H_INCLUDED
 
-# define JSONCPP_VERSION_STRING "1.8.0"
+# define JSONCPP_VERSION_STRING "1.8.3"
 # define JSONCPP_VERSION_MAJOR 1
 # define JSONCPP_VERSION_MINOR 8
-# define JSONCPP_VERSION_PATCH 0
+# define JSONCPP_VERSION_PATCH 3
 # define JSONCPP_VERSION_QUALIFIER
 # define JSONCPP_VERSION_HEXA ((JSONCPP_VERSION_MAJOR << 24) | (JSONCPP_VERSION_MINOR << 16) | (JSONCPP_VERSION_PATCH << 8))
 
@@ -116,7 +116,7 @@ license you like.
 // Beginning of content of file: include/json/config.h
 // //////////////////////////////////////////////////////////////////////
 
-// Copyright 2007-2010 Baptiste Lepilleur
+// Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
 // Distributed under MIT license, or public domain if desired and
 // recognized in your jurisdiction.
 // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
@@ -238,6 +238,9 @@ license you like.
 #endif
 
 #ifdef __clang__
+#  if __has_extension(attribute_deprecated_with_message)
+#    define JSONCPP_DEPRECATED(message)  __attribute__ ((deprecated(message)))
+#  endif
 #elif defined __GNUC__ // not clang (gcc comes later since clang emulates gcc)
 #  if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5))
 #    define JSONCPP_DEPRECATED(message)  __attribute__ ((deprecated(message)))
@@ -314,7 +317,7 @@ typedef UInt64 LargestUInt;
 // Beginning of content of file: include/json/forwards.h
 // //////////////////////////////////////////////////////////////////////
 
-// Copyright 2007-2010 Baptiste Lepilleur
+// Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
 // Distributed under MIT license, or public domain if desired and
 // recognized in your jurisdiction.
 // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
@@ -365,7 +368,7 @@ class ValueConstIterator;
 // Beginning of content of file: include/json/features.h
 // //////////////////////////////////////////////////////////////////////
 
-// Copyright 2007-2010 Baptiste Lepilleur
+// Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
 // Distributed under MIT license, or public domain if desired and
 // recognized in your jurisdiction.
 // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
@@ -440,7 +443,7 @@ public:
 // Beginning of content of file: include/json/value.h
 // //////////////////////////////////////////////////////////////////////
 
-// Copyright 2007-2010 Baptiste Lepilleur
+// Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
 // Distributed under MIT license, or public domain if desired and
 // recognized in your jurisdiction.
 // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
@@ -465,7 +468,7 @@ public:
 #endif
 
 //Conditional NORETURN attribute on the throw functions would:
-// a) suppress false positives from static code analysis 
+// a) suppress false positives from static code analysis
 // b) possibly improve optimization opportunities.
 #if !defined(JSONCPP_NORETURN)
 #  if defined(_MSC_VER)
@@ -506,7 +509,7 @@ protected:
 /** Exceptions which the user cannot easily avoid.
  *
  * E.g. out-of-memory (when we use malloc), stack-overflow, malicious input
- * 
+ *
  * \remark derived from Json::Exception
  */
 class JSON_API RuntimeError : public Exception {
@@ -517,7 +520,7 @@ public:
 /** Exceptions thrown by JSON_ASSERT/JSON_FAIL macros.
  *
  * These are precondition-violations (user bugs) and internal errors (our bugs).
- * 
+ *
  * \remark derived from Json::Exception
  */
 class JSON_API LogicError : public Exception {
@@ -675,7 +678,12 @@ private:
     CZString(CZString&& other);
 #endif
     ~CZString();
-    CZString& operator=(CZString other);
+    CZString& operator=(const CZString& other);
+
+#if JSON_HAS_RVALUE_REFERENCES
+    CZString& operator=(CZString&& other);
+#endif
+
     bool operator<(CZString const& other) const;
     bool operator==(CZString const& other) const;
     ArrayIndex index() const;
@@ -765,11 +773,17 @@ Json::Value obj_value(Json::objectValue); // {}
   /// Deep copy, then swap(other).
   /// \note Over-write existing comments. To preserve comments, use #swapPayload().
   Value& operator=(Value other);
+
   /// Swap everything.
   void swap(Value& other);
   /// Swap values but leave comments and source offsets in place.
   void swapPayload(Value& other);
 
+  /// copy everything.
+  void copy(const Value& other);
+  /// copy values but leave comments and source offsets in place.
+  void copyPayload(const Value& other);
+
   ValueType type() const;
 
   /// Compare payload only, not comments etc.
@@ -880,6 +894,10 @@ Json::Value obj_value(Json::objectValue); // {}
   /// Equivalent to jsonvalue[jsonvalue.size()] = value;
   Value& append(const Value& value);
 
+#if JSON_HAS_RVALUE_REFERENCES
+  Value& append(Value&& value);
+#endif
+
   /// Access an object value by name, create a null member if it does not exist.
   /// \note Because of our implementation, keys are limited to 2^30 -1 chars.
   ///  Exceeding that will cause an exception.
@@ -945,10 +963,12 @@ Json::Value obj_value(Json::objectValue); // {}
   /// \pre type() is objectValue or nullValue
   /// \post type() is unchanged
   /// \deprecated
+  JSONCPP_DEPRECATED("")
   Value removeMember(const char* key);
   /// Same as removeMember(const char*)
   /// \param key may contain embedded nulls.
   /// \deprecated
+  JSONCPP_DEPRECATED("")
   Value removeMember(const JSONCPP_STRING& key);
   /// Same as removeMember(const char* begin, const char* end, Value* removed),
   /// but 'key' is null-terminated.
@@ -1324,7 +1344,7 @@ inline void swap(Json::Value& a, Json::Value& b) { a.swap(b); }
 // Beginning of content of file: include/json/reader.h
 // //////////////////////////////////////////////////////////////////////
 
-// Copyright 2007-2010 Baptiste Lepilleur
+// Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
 // Distributed under MIT license, or public domain if desired and
 // recognized in your jurisdiction.
 // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
@@ -1358,7 +1378,7 @@ namespace Json {
  *
  * \deprecated Use CharReader and CharReaderBuilder.
  */
-class JSON_API Reader {
+class JSONCPP_DEPRECATED("Use CharReader and CharReaderBuilder instead") JSON_API Reader {
 public:
   typedef char Char;
   typedef const Char* Location;
@@ -1556,6 +1576,9 @@ private:
   void addComment(Location begin, Location end, CommentPlacement placement);
   void skipCommentTokens(Token& token);
 
+  static bool containsNewLine(Location begin, Location end);
+  static JSONCPP_STRING normalizeEOL(Location begin, Location end);
+
   typedef std::stack<Value*> Nodes;
   Nodes nodes_;
   Errors errors_;
@@ -1746,7 +1769,7 @@ JSON_API JSONCPP_ISTREAM& operator>>(JSONCPP_ISTREAM&, Value&);
 // Beginning of content of file: include/json/writer.h
 // //////////////////////////////////////////////////////////////////////
 
-// Copyright 2007-2010 Baptiste Lepilleur
+// Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
 // Distributed under MIT license, or public domain if desired and
 // recognized in your jurisdiction.
 // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
@@ -1888,7 +1911,7 @@ public:
 /** \brief Abstract class for writers.
  * \deprecated Use StreamWriter. (And really, this is an implementation detail.)
  */
-class JSON_API Writer {
+class JSONCPP_DEPRECATED("Use StreamWriter instead") JSON_API Writer {
 public:
   virtual ~Writer();
 
@@ -1904,7 +1927,7 @@ public:
  * \sa Reader, Value
  * \deprecated Use StreamWriterBuilder.
  */
-class JSON_API FastWriter : public Writer {
+class JSONCPP_DEPRECATED("Use StreamWriterBuilder instead") JSON_API FastWriter : public Writer {
 
 public:
   FastWriter();
@@ -1957,7 +1980,7 @@ private:
  * \sa Reader, Value, Value::setComment()
  * \deprecated Use StreamWriterBuilder.
  */
-class JSON_API StyledWriter : public Writer {
+class JSONCPP_DEPRECATED("Use StreamWriterBuilder instead") JSON_API StyledWriter : public Writer {
 public:
   StyledWriter();
   ~StyledWriter() JSONCPP_OVERRIDE {}
@@ -2015,12 +2038,14 @@ private:
  * If the Value have comments then they are outputed according to their
  #CommentPlacement.
  *
- * \param indentation Each level will be indented by this amount extra.
  * \sa Reader, Value, Value::setComment()
  * \deprecated Use StreamWriterBuilder.
  */
-class JSON_API StyledStreamWriter {
+class JSONCPP_DEPRECATED("Use StreamWriterBuilder instead") JSON_API StyledStreamWriter {
 public:
+/**
+ * \param indentation Each level will be indented by this amount extra.
+ */
   StyledStreamWriter(JSONCPP_STRING indentation = "\t");
   ~StyledStreamWriter() {}
 
@@ -2095,7 +2120,7 @@ JSON_API JSONCPP_OSTREAM& operator<<(JSONCPP_OSTREAM&, const Value& root);
 // Beginning of content of file: include/json/assertions.h
 // //////////////////////////////////////////////////////////////////////
 
-// Copyright 2007-2010 Baptiste Lepilleur
+// Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
 // Distributed under MIT license, or public domain if desired and
 // recognized in your jurisdiction.
 // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
diff --git a/lib/jsoncpp/jsoncpp.cpp b/lib/jsoncpp/jsoncpp.cpp
index c373405f0..a85e280ed 100644
--- a/lib/jsoncpp/jsoncpp.cpp
+++ b/lib/jsoncpp/jsoncpp.cpp
@@ -10,13 +10,13 @@ The JsonCpp library's source code, including accompanying documentation,
 tests and demonstration applications, are licensed under the following
 conditions...
 
-The author (Baptiste Lepilleur) explicitly disclaims copyright in all 
+Baptiste Lepilleur and The JsonCpp Authors explicitly disclaim copyright in all 
 jurisdictions which recognize such a disclaimer. In such jurisdictions, 
 this software is released into the Public Domain.
 
 In jurisdictions which do not recognize Public Domain property (e.g. Germany as of
-2010), this software is Copyright (c) 2007-2010 by Baptiste Lepilleur, and is
-released under the terms of the MIT License (see below).
+2010), this software is Copyright (c) 2007-2010 by Baptiste Lepilleur and
+The JsonCpp Authors, and is released under the terms of the MIT License (see below).
 
 In jurisdictions which recognize Public Domain property, the user of this 
 software may choose to accept it either as 1) Public Domain, 2) under the 
@@ -31,7 +31,7 @@ described in clear, concise terms at:
 The full text of the MIT License follows:
 
 ========================================================================
-Copyright (c) 2007-2010 Baptiste Lepilleur
+Copyright (c) 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
 
 Permission is hereby granted, free of charge, to any person
 obtaining a copy of this software and associated documentation
@@ -84,7 +84,7 @@ license you like.
 // Beginning of content of file: src/lib_json/json_tool.h
 // //////////////////////////////////////////////////////////////////////
 
-// Copyright 2007-2010 Baptiste Lepilleur
+// Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
 // Distributed under MIT license, or public domain if desired and
 // recognized in your jurisdiction.
 // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
@@ -215,7 +215,7 @@ static inline void fixNumericLocaleInput(char* begin, char* end) {
 // Beginning of content of file: src/lib_json/json_reader.cpp
 // //////////////////////////////////////////////////////////////////////
 
-// Copyright 2007-2011 Baptiste Lepilleur
+// Copyright 2007-2011 Baptiste Lepilleur and The JsonCpp Authors
 // Copyright (C) 2016 InfoTeCS JSC. All rights reserved.
 // Distributed under MIT license, or public domain if desired and
 // recognized in your jurisdiction.
@@ -298,7 +298,7 @@ Features Features::strictMode() {
 // Implementation of class Reader
 // ////////////////////////////////
 
-static bool containsNewLine(Reader::Location begin, Reader::Location end) {
+bool Reader::containsNewLine(Reader::Location begin, Reader::Location end) {
   for (; begin < end; ++begin)
     if (*begin == '\n' || *begin == '\r')
       return true;
@@ -320,8 +320,7 @@ Reader::Reader(const Features& features)
 
 bool
 Reader::parse(const std::string& document, Value& root, bool collectComments) {
-  JSONCPP_STRING documentCopy(document.data(), document.data() + document.capacity());
-  std::swap(documentCopy, document_);
+  document_.assign(document.begin(), document.end());
   const char* begin = document_.c_str();
   const char* end = begin + document_.length();
   return parse(begin, end, root, collectComments);
@@ -354,7 +353,7 @@ bool Reader::parse(const char* beginDoc,
   current_ = begin_;
   lastValueEnd_ = 0;
   lastValue_ = 0;
-  commentsBefore_ = "";
+  commentsBefore_.clear();
   errors_.clear();
   while (!nodes_.empty())
     nodes_.pop();
@@ -393,7 +392,7 @@ bool Reader::readValue() {
 
   if (collectComments_ && !commentsBefore_.empty()) {
     currentValue().setComment(commentsBefore_, commentBefore);
-    commentsBefore_ = "";
+    commentsBefore_.clear();
   }
 
   switch (token.type_) {
@@ -587,7 +586,7 @@ bool Reader::readComment() {
   return true;
 }
 
-static JSONCPP_STRING normalizeEOL(Reader::Location begin, Reader::Location end) {
+JSONCPP_STRING Reader::normalizeEOL(Reader::Location begin, Reader::Location end) {
   JSONCPP_STRING normalized;
   normalized.reserve(static_cast<size_t>(end - begin));
   Reader::Location current = begin;
@@ -691,7 +690,7 @@ bool Reader::readObject(Token& tokenStart) {
       break;
     if (tokenName.type_ == tokenObjectEnd && name.empty()) // empty object
       return true;
-    name = "";
+    name.clear();
     if (tokenName.type_ == tokenString) {
       if (!decodeString(tokenName, name))
         return recoverFromError(tokenObjectEnd);
@@ -1236,6 +1235,9 @@ private:
   void addComment(Location begin, Location end, CommentPlacement placement);
   void skipCommentTokens(Token& token);
 
+  static JSONCPP_STRING normalizeEOL(Location begin, Location end);
+  static bool containsNewLine(Location begin, Location end);
+
   typedef std::stack<Value*> Nodes;
   Nodes nodes_;
   Errors errors_;
@@ -1253,6 +1255,13 @@ private:
 
 // complete copy of Read impl, for OurReader
 
+bool OurReader::containsNewLine(OurReader::Location begin, OurReader::Location end) {
+  for (; begin < end; ++begin)
+    if (*begin == '\n' || *begin == '\r')
+      return true;
+  return false;
+}
+
 OurReader::OurReader(OurFeatures const& features)
     : errors_(), document_(), begin_(), end_(), current_(), lastValueEnd_(),
       lastValue_(), commentsBefore_(),
@@ -1273,7 +1282,7 @@ bool OurReader::parse(const char* beginDoc,
   current_ = begin_;
   lastValueEnd_ = 0;
   lastValue_ = 0;
-  commentsBefore_ = "";
+  commentsBefore_.clear();
   errors_.clear();
   while (!nodes_.empty())
     nodes_.pop();
@@ -1315,7 +1324,7 @@ bool OurReader::readValue() {
 
   if (collectComments_ && !commentsBefore_.empty()) {
     currentValue().setComment(commentsBefore_, commentBefore);
-    commentsBefore_ = "";
+    commentsBefore_.clear();
   }
 
   switch (token.type_) {
@@ -1562,6 +1571,25 @@ bool OurReader::readComment() {
   return true;
 }
 
+JSONCPP_STRING OurReader::normalizeEOL(OurReader::Location begin, OurReader::Location end) {
+  JSONCPP_STRING normalized;
+  normalized.reserve(static_cast<size_t>(end - begin));
+  OurReader::Location current = begin;
+  while (current != end) {
+    char c = *current++;
+    if (c == '\r') {
+      if (current != end && *current == '\n')
+         // convert dos EOL
+         ++current;
+      // convert Mac EOL
+      normalized += '\n';
+    } else {
+      normalized += c;
+    }
+  }
+  return normalized;
+}
+
 void
 OurReader::addComment(Location begin, Location end, CommentPlacement placement) {
   assert(collectComments_);
@@ -1664,7 +1692,7 @@ bool OurReader::readObject(Token& tokenStart) {
       break;
     if (tokenName.type_ == tokenObjectEnd && name.empty()) // empty object
       return true;
-    name = "";
+    name.clear();
     if (tokenName.type_ == tokenString) {
       if (!decodeString(tokenName, name))
         return recoverFromError(tokenObjectEnd);
@@ -2265,7 +2293,7 @@ JSONCPP_ISTREAM& operator>>(JSONCPP_ISTREAM& sin, Value& root) {
 // Beginning of content of file: src/lib_json/json_valueiterator.inl
 // //////////////////////////////////////////////////////////////////////
 
-// Copyright 2007-2010 Baptiste Lepilleur
+// Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
 // Distributed under MIT license, or public domain if desired and
 // recognized in your jurisdiction.
 // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
@@ -2446,7 +2474,7 @@ ValueIterator& ValueIterator::operator=(const SelfType& other) {
 // Beginning of content of file: src/lib_json/json_value.cpp
 // //////////////////////////////////////////////////////////////////////
 
-// Copyright 2011 Baptiste Lepilleur
+// Copyright 2011 Baptiste Lepilleur and The JsonCpp Authors
 // Distributed under MIT license, or public domain if desired and
 // recognized in your jurisdiction.
 // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
@@ -2740,10 +2768,20 @@ void Value::CZString::swap(CZString& other) {
   std::swap(index_, other.index_);
 }
 
-Value::CZString& Value::CZString::operator=(CZString other) {
-  swap(other);
+Value::CZString& Value::CZString::operator=(const CZString& other) {
+  cstr_ = other.cstr_;
+  index_ = other.index_;
+  return *this;
+}
+
+#if JSON_HAS_RVALUE_REFERENCES
+Value::CZString& Value::CZString::operator=(CZString&& other) {
+  cstr_ = other.cstr_;
+  index_ = other.index_;
+  other.cstr_ = nullptr;
   return *this;
 }
+#endif
 
 bool Value::CZString::operator<(const CZString& other) const {
   if (!cstr_) return index_ < other.index_;
@@ -2751,7 +2789,7 @@ bool Value::CZString::operator<(const CZString& other) const {
   // Assume both are strings.
   unsigned this_len = this->storage_.length_;
   unsigned other_len = other.storage_.length_;
-  unsigned min_len = std::min(this_len, other_len);
+  unsigned min_len = std::min<unsigned>(this_len, other_len);
   JSON_ASSERT(this->cstr_ && other.cstr_);
   int comp = memcmp(this->cstr_, other.cstr_, min_len);
   if (comp < 0) return true;
@@ -2846,6 +2884,7 @@ Value::Value(double value) {
 
 Value::Value(const char* value) {
   initBasic(stringValue, true);
+  JSON_ASSERT_MESSAGE(value != NULL, "Null Value Passed to Value Constructor");
   value_.string_ = duplicateAndPrefixStringValue(value, static_cast<unsigned>(strlen(value)));
 }
 
@@ -2970,6 +3009,12 @@ void Value::swapPayload(Value& other) {
   other.allocated_ = temp2 & 0x1;
 }
 
+void Value::copyPayload(const Value& other) {
+  type_ = other.type_;
+  value_ = other.value_;
+  allocated_ = other.allocated_;
+}
+
 void Value::swap(Value& other) {
   swapPayload(other);
   std::swap(comments_, other.comments_);
@@ -2977,6 +3022,13 @@ void Value::swap(Value& other) {
   std::swap(limit_, other.limit_);
 }
 
+void Value::copy(const Value& other) {
+  copyPayload(other);
+  comments_ = other.comments_;
+  start_ = other.start_;
+  limit_ = other.limit_;
+}
+
 ValueType Value::type() const { return type_; }
 
 int Value::compare(const Value& other) const {
@@ -3014,7 +3066,7 @@ bool Value::operator<(const Value& other) const {
     char const* other_str;
     decodePrefixedString(this->allocated_, this->value_.string_, &this_len, &this_str);
     decodePrefixedString(other.allocated_, other.value_.string_, &other_len, &other_str);
-    unsigned min_len = std::min(this_len, other_len);
+    unsigned min_len = std::min<unsigned>(this_len, other_len);
     JSON_ASSERT(this_str && other_str);
     int comp = memcmp(this_str, other_str, min_len);
     if (comp < 0) return true;
@@ -3327,7 +3379,7 @@ bool Value::isConvertibleTo(ValueType other) const {
   case nullValue:
     return (isNumeric() && asDouble() == 0.0) ||
            (type_ == booleanValue && value_.bool_ == false) ||
-           (type_ == stringValue && asString() == "") ||
+           (type_ == stringValue && asString().empty()) ||
            (type_ == arrayValue && value_.map_->size() == 0) ||
            (type_ == objectValue && value_.map_->size() == 0) ||
            type_ == nullValue;
@@ -3571,6 +3623,10 @@ Value const& Value::operator[](CppTL::ConstString const& key) const
 
 Value& Value::append(const Value& value) { return (*this)[size()] = value; }
 
+#if JSON_HAS_RVALUE_REFERENCES
+  Value& Value::append(Value&& value) { return (*this)[size()] = value; }
+#endif
+
 Value Value::get(char const* key, char const* cend, Value const& defaultValue) const
 {
   Value const* found = find(key, cend);
@@ -3807,11 +3863,23 @@ bool Value::isUInt64() const {
 }
 
 bool Value::isIntegral() const {
+  switch (type_) {
+    case intValue:
+    case uintValue:
+      return true;
+    case realValue:
 #if defined(JSON_HAS_INT64)
-  return isInt64() || isUInt64();
+      // Note that maxUInt64 (= 2^64 - 1) is not exactly representable as a
+      // double, so double(maxUInt64) will be rounded up to 2^64. Therefore we
+      // require the value to be strictly less than the limit.
+      return value_.real_ >= double(minInt64) && value_.real_ < maxUInt64AsDouble && IsIntegral(value_.real_);
 #else
-  return isInt() || isUInt();
-#endif
+      return value_.real_ >= minInt && value_.real_ <= maxUInt && IsIntegral(value_.real_);
+#endif // JSON_HAS_INT64
+    default:
+      break;
+  }
+  return false;
 }
 
 bool Value::isDouble() const { return type_ == intValue || type_ == uintValue || type_ == realValue; }
@@ -3861,8 +3929,13 @@ ptrdiff_t Value::getOffsetStart() const { return start_; }
 ptrdiff_t Value::getOffsetLimit() const { return limit_; }
 
 JSONCPP_STRING Value::toStyledString() const {
-  StyledWriter writer;
-  return writer.write(*this);
+  StreamWriterBuilder builder;
+
+  JSONCPP_STRING out = this->hasComment(commentBefore) ? "\n" : "";
+  out += Json::writeString(builder, *this);
+  out += "\n";
+
+  return out;
 }
 
 Value::const_iterator Value::begin() const {
@@ -3941,6 +4014,7 @@ Path::Path(const JSONCPP_STRING& path,
            const PathArgument& a4,
            const PathArgument& a5) {
   InArgs in;
+  in.reserve(5);
   in.push_back(&a1);
   in.push_back(&a2);
   in.push_back(&a3);
@@ -4076,7 +4150,7 @@ Value& Path::make(Value& root) const {
 // Beginning of content of file: src/lib_json/json_writer.cpp
 // //////////////////////////////////////////////////////////////////////
 
-// Copyright 2011 Baptiste Lepilleur
+// Copyright 2011 Baptiste Lepilleur and The JsonCpp Authors
 // Distributed under MIT license, or public domain if desired and
 // recognized in your jurisdiction.
 // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
@@ -4220,17 +4294,18 @@ JSONCPP_STRING valueToString(double value, bool useSpecialFloats, unsigned int p
   char buffer[36];
   int len = -1;
 
-  char formatString[6];
-  sprintf(formatString, "%%.%dg", precision);
+  char formatString[15];
+  snprintf(formatString, sizeof(formatString), "%%.%dg", precision);
 
   // Print into the buffer. We need not request the alternative representation
   // that always has a decimal point because JSON doesn't distingish the
   // concepts of reals and integers.
   if (isfinite(value)) {
     len = snprintf(buffer, sizeof(buffer), formatString, value);
-    
+    fixNumericLocale(buffer, buffer + len);
+
     // try to ensure we preserve the fact that this was given to us as a double on input
-    if (!strstr(buffer, ".") && !strstr(buffer, "e")) {
+    if (!strchr(buffer, '.') && !strchr(buffer, 'e')) {
       strcat(buffer, ".0");
     }
 
@@ -4243,10 +4318,8 @@ JSONCPP_STRING valueToString(double value, bool useSpecialFloats, unsigned int p
     } else {
       len = snprintf(buffer, sizeof(buffer), useSpecialFloats ? "Infinity" : "1e+9999");
     }
-    // For those, we do not need to call fixNumLoc, but it is fast.
   }
   assert(len >= 0);
-  fixNumericLocale(buffer, buffer + len);
   return buffer;
 }
 }
@@ -4413,7 +4486,7 @@ void FastWriter::dropNullPlaceholders() { dropNullPlaceholders_ = true; }
 void FastWriter::omitEndingLineFeed() { omitEndingLineFeed_ = true; }
 
 JSONCPP_STRING FastWriter::write(const Value& root) {
-  document_ = "";
+  document_.clear();
   writeValue(root);
   if (!omitEndingLineFeed_)
     document_ += "\n";
@@ -4481,9 +4554,9 @@ StyledWriter::StyledWriter()
     : rightMargin_(74), indentSize_(3), addChildValues_() {}
 
 JSONCPP_STRING StyledWriter::write(const Value& root) {
-  document_ = "";
+  document_.clear();
   addChildValues_ = false;
-  indentString_ = "";
+  indentString_.clear();
   writeCommentBeforeValue(root);
   writeValue(root);
   writeCommentAfterValueOnSameLine(root);
@@ -4661,7 +4734,7 @@ void StyledWriter::writeCommentBeforeValue(const Value& root) {
   while (iter != comment.end()) {
     document_ += *iter;
     if (*iter == '\n' &&
-       (iter != comment.end() && *(iter + 1) == '/'))
+       ((iter+1) != comment.end() && *(iter + 1) == '/'))
       writeIndent();
     ++iter;
   }
@@ -4697,7 +4770,7 @@ StyledStreamWriter::StyledStreamWriter(JSONCPP_STRING indentation)
 void StyledStreamWriter::write(JSONCPP_OSTREAM& out, const Value& root) {
   document_ = &out;
   addChildValues_ = false;
-  indentString_ = "";
+  indentString_.clear();
   indented_ = true;
   writeCommentBeforeValue(root);
   if (!indented_) writeIndent();
@@ -4877,7 +4950,7 @@ void StyledStreamWriter::writeCommentBeforeValue(const Value& root) {
   while (iter != comment.end()) {
     *document_ << *iter;
     if (*iter == '\n' &&
-       (iter != comment.end() && *(iter + 1) == '/'))
+       ((iter+1) != comment.end() && *(iter + 1) == '/'))
       // writeIndent();  // would include newline
       *document_ << indentString_;
     ++iter;
@@ -4979,7 +5052,7 @@ int BuiltStyledStreamWriter::write(Value const& root, JSONCPP_OSTREAM* sout)
   sout_ = sout;
   addChildValues_ = false;
   indented_ = true;
-  indentString_ = "";
+  indentString_.clear();
   writeCommentBeforeValue(root);
   if (!indented_) writeIndent();
   indented_ = true;
@@ -5165,7 +5238,7 @@ void BuiltStyledStreamWriter::writeCommentBeforeValue(Value const& root) {
   while (iter != comment.end()) {
     *sout_ << *iter;
     if (*iter == '\n' &&
-       (iter != comment.end() && *(iter + 1) == '/'))
+       ((iter+1) != comment.end() && *(iter + 1) == '/'))
       // writeIndent();  // would write extra newline
       *sout_ << indentString_;
     ++iter;
@@ -5233,10 +5306,10 @@ StreamWriter* StreamWriterBuilder::newStreamWriter() const
   }
   JSONCPP_STRING nullSymbol = "null";
   if (dnp) {
-    nullSymbol = "";
+    nullSymbol.clear();
   }
   if (pre > 17) pre = 17;
-  JSONCPP_STRING endingLineFeedSymbol = "";
+  JSONCPP_STRING endingLineFeedSymbol;
   return new BuiltStyledStreamWriter(
       indentation, cs,
       colonSymbol, nullSymbol, endingLineFeedSymbol, usf, pre);
diff --git a/src/convert_json.cpp b/src/convert_json.cpp
index 1343903b4..bfd7f39c4 100644
--- a/src/convert_json.cpp
+++ b/src/convert_json.cpp
@@ -46,12 +46,15 @@ Json::Value fetchJsonValue(const std::string &url,
 		return Json::Value();
 	}
 	Json::Value root;
-	Json::Reader reader;
 	std::istringstream stream(fetch_result.data);
 
-	if (!reader.parse(stream, root)) {
+	Json::CharReaderBuilder builder;
+	builder.settings_["collectComments"] = false;
+	std::string errs;
+
+	if (!Json::parseFromStream(builder, stream, &root, &errs)) {
 		errorstream << "URL: " << url << std::endl;
-		errorstream << "Failed to parse json data " << reader.getFormattedErrorMessages();
+		errorstream << "Failed to parse json data " << errs << std::endl;
 		if (fetch_result.data.size() > 100) {
 			errorstream << "Data (" << fetch_result.data.size()
 				<< " bytes) printed to warningstream." << std::endl;
@@ -64,3 +67,13 @@ Json::Value fetchJsonValue(const std::string &url,
 
 	return root;
 }
+
+std::string fastWriteJson(const Json::Value &value)
+{
+	std::ostringstream oss;
+	Json::StreamWriterBuilder builder;
+	builder["indentation"] = "";
+	std::unique_ptr<Json::StreamWriter> writer(builder.newStreamWriter());
+	writer->write(value, &oss);
+	return oss.str();
+}
diff --git a/src/convert_json.h b/src/convert_json.h
index d19e70851..d8825acdc 100644
--- a/src/convert_json.h
+++ b/src/convert_json.h
@@ -23,3 +23,5 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 Json::Value fetchJsonValue(const std::string &url,
 		std::vector<std::string> *extra_headers);
+
+std::string fastWriteJson(const Json::Value &value);
diff --git a/src/mods.cpp b/src/mods.cpp
index 405cf9c79..dae492339 100644
--- a/src/mods.cpp
+++ b/src/mods.cpp
@@ -26,6 +26,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "subgame.h"
 #include "settings.h"
 #include "porting.h"
+#include "convert_json.h"
 
 static bool parseDependsLine(std::istream &is,
 		std::string &dep, std::set<char> &symbols)
@@ -374,7 +375,7 @@ bool ModMetadata::save(const std::string &root_path)
 	}
 
 	bool w_ok = fs::safeWriteToFile(root_path + DIR_DELIM + m_mod_name,
-		Json::FastWriter().write(json));
+			fastWriteJson(json));
 
 	if (w_ok) {
 		m_modified = false;
@@ -393,11 +394,14 @@ bool ModMetadata::load(const std::string &root_path)
 		return false;
 	}
 
-	Json::Reader reader;
 	Json::Value root;
-	if (!reader.parse(is, root)) {
+	Json::CharReaderBuilder builder;
+	builder.settings_["collectComments"] = false;
+	std::string errs;
+
+	if (!Json::parseFromStream(builder, is, &root, &errs)) {
 		errorstream << "ModMetadata[" << m_mod_name << "]: failed read data "
-			"(Json decoding failure)." << std::endl;
+			"(Json decoding failure). Message: " << errs << std::endl;
 		return false;
 	}
 
diff --git a/src/remoteplayer.cpp b/src/remoteplayer.cpp
index c108ad3f1..f8f31d928 100644
--- a/src/remoteplayer.cpp
+++ b/src/remoteplayer.cpp
@@ -26,6 +26,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "porting.h"  // strlcpy
 #include "server.h"
 #include "settings.h"
+#include "convert_json.h"
 
 /*
 	RemotePlayer
@@ -76,8 +77,8 @@ void RemotePlayer::serializeExtraAttributes(std::string &output)
 		json_root[attr.first] = attr.second;
 	}
 
-	Json::FastWriter writer;
-	output = writer.write(json_root);
+	output = fastWriteJson(json_root);
+
 	m_sao->setExtendedAttributeModified(false);
 }
 
@@ -120,9 +121,13 @@ void RemotePlayer::deSerialize(std::istream &is, const std::string &playername,
 
 		try {
 			const std::string &extended_attributes = args.get("extended_attributes");
-			Json::Reader reader;
+			std::istringstream iss(extended_attributes);
+			Json::CharReaderBuilder builder;
+			builder.settings_["collectComments"] = false;
+			std::string errs;
+
 			Json::Value attr_root;
-			reader.parse(extended_attributes, attr_root);
+			Json::parseFromStream(builder, iss, &attr_root, &errs);
 
 			const Json::Value::Members attr_list = attr_root.getMemberNames();
 			for (const auto &it : attr_list) {
diff --git a/src/script/lua_api/l_util.cpp b/src/script/lua_api/l_util.cpp
index dffbc66d1..5128e79e6 100644
--- a/src/script/lua_api/l_util.cpp
+++ b/src/script/lua_api/l_util.cpp
@@ -27,6 +27,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include <json/json.h>
 #include "cpp_api/s_security.h"
 #include "porting.h"
+#include "convert_json.h"
 #include "debug.h"
 #include "log.h"
 #include "tool.h"
@@ -95,12 +96,14 @@ int ModApiUtil::l_parse_json(lua_State *L)
 	Json::Value root;
 
 	{
-		Json::Reader reader;
 		std::istringstream stream(jsonstr);
 
-		if (!reader.parse(stream, root)) {
-			errorstream << "Failed to parse json data "
-				<< reader.getFormattedErrorMessages();
+		Json::CharReaderBuilder builder;
+		builder.settings_["collectComments"] = false;
+		std::string errs;
+
+		if (!Json::parseFromStream(builder, stream, &root, &errs)) {
+			errorstream << "Failed to parse json data " << errs << std::endl;
 			size_t jlen = strlen(jsonstr);
 			if (jlen > 100) {
 				errorstream << "Data (" << jlen
@@ -145,11 +148,9 @@ int ModApiUtil::l_write_json(lua_State *L)
 
 	std::string out;
 	if (styled) {
-		Json::StyledWriter writer;
-		out = writer.write(root);
+		out = root.toStyledString();
 	} else {
-		Json::FastWriter writer;
-		out = writer.write(root);
+		out = fastWriteJson(root);
 	}
 	lua_pushlstring(L, out.c_str(), out.size());
 	return 1;
diff --git a/src/serverlist.cpp b/src/serverlist.cpp
index a59a89369..7d3ab4bbb 100644
--- a/src/serverlist.cpp
+++ b/src/serverlist.cpp
@@ -185,8 +185,8 @@ const std::string serializeJson(const std::vector<ServerListSpec> &serverlist)
 		list.append(it);
 	}
 	root["list"] = list;
-	Json::FastWriter writer;
-	return writer.write(root);
+
+	return fastWriteJson(root);
 }
 
 
@@ -249,10 +249,9 @@ void sendAnnounce(AnnounceAction action,
 			server["lag"] = lag;
 	}
 
-	Json::FastWriter writer;
 	HTTPFetchRequest fetch_request;
 	fetch_request.url = g_settings->get("serverlist_url") + std::string("/announce");
-	fetch_request.post_fields["json"] = writer.write(server);
+	fetch_request.post_fields["json"] = fastWriteJson(server);
 	fetch_request.multipart = true;
 	httpfetch_async(fetch_request);
 }