Merge lp:~stewart/drizzle/json-interface into lp:~drizzle-trunk/drizzle/development

[Stewart Smith]

Preliminary implementation of a HTTP interface to Drizzle.

Includes testing. Uses libevent http daemon. returns results as JSON.

includes brian's fixes.

[Stewart Smith (stewart)]

note that this includes http://jsoncpp.sourceforge.net/ code, which is in the public domain.

[Stewart Smith (stewart)]

so a problem with this branch currently is that the tests use 'curl' to test the interface. Not all systems have curl installed however, so I either need to (for example) add HTTP_GET()/HTTP_POST() functions to the server (perhaps just using the interface that libevent provides) or we need to add curl as a build-dep.

[Brian Aker (brianaker)]

We should put a comment on the code so that we know where it came from (and either our own license, or put public domain headers on it).

[Stewart Smith (stewart)]

now fixed to have http_() functions in the tree that are used to test json_server. Can also be used to fetch URLs and the like.

This change means param-build passes on every system.

http://jsoncpp.sourceforge.net/LICENSE

is the other thing we should work out how to have in the soure files.

[Stewart Smith (stewart)]

http://jenkins.drizzle.org/view/Drizzle-param/job/drizzle-param/813/

[Mark Atwood (fallenpegasus)]

fail in jenkins

http://jenkins.drizzle.org/view/Drizzle-build/job/drizzle-build-CentOS-5-64bit/1560/console
http://jenkins.drizzle.org/view/Drizzle-build/job/drizzle-build-rhel-5.5-64bit/348/console
http://jenkins.drizzle.org/view/Drizzle-build/job/drizzle-build-hades/1451/console
http://jenkins.drizzle.org/view/Drizzle-build/job/drizzle-build-freebsd-8.0/1584/console
http://jenkins.drizzle.org/view/Drizzle-build/job/drizzle-build-fedora13-64bit/886/console
http://jenkins.drizzle.org/view/Drizzle-build/job/drizzle-build-CentOS-5-64bit/1560/console

Some sort of issue with flex?

please fix and resubmit

review: Needs Fixing

[Stewart Smith (stewart)]

On Thu, 12 May 2011 23:42:27 -0000, Mark Atwood <email address hidden> wrote:
> Review: Needs Fixing
> fail in jenkins
>
> http://jenkins.drizzle.org/view/Drizzle-build/job/drizzle-build-CentOS-5-64bit/1560/console
> http://jenkins.drizzle.org/view/Drizzle-build/job/drizzle-build-rhel-5.5-64bit/348/console
> http://jenkins.drizzle.org/view/Drizzle-build/job/drizzle-build-hades/1451/console
> http://jenkins.drizzle.org/view/Drizzle-build/job/drizzle-build-freebsd-8.0/1584/console
> http://jenkins.drizzle.org/view/Drizzle-build/job/drizzle-build-fedora13-64bit/886/console
> http://jenkins.drizzle.org/view/Drizzle-build/job/drizzle-build-CentOS-5-64bit/1560/console
>
> Some sort of issue with flex?
>

looks like something from vj's sp branch, not mine.

--
Stewart Smith

[Mark Atwood (fallenpegasus)]

>>
>
> looks like something from vj's sp branch, not mine.

Brian and I are looking at it.

=== modified file 'drizzled/plugin/client/cached.h'
--- drizzled/plugin/client/cached.h	2011-03-15 23:55:01 +0000
+++ drizzled/plugin/client/cached.h	2011-05-04 01:52:37 +0000
@@ -57,6 +57,7 @@
       item->make_field(&field);
       max_column++;
     }
+    _result_set->setColumnCount(max_column);
     _result_set->createRow();
 
     return false;
 
=== modified file 'drizzled/sql/result_set.h'
--- drizzled/sql/result_set.h	2011-03-29 12:45:08 +0000
+++ drizzled/sql/result_set.h	2011-05-04 01:52:37 +0000
@@ -101,6 +101,11 @@
   {
   }
 
+  void setColumnCount(size_t fields)
+  {
+    _meta_data.setColumnCount(fields);
+  }
+
   ~ResultSet();
 
   void createRow();
 
=== modified file 'drizzled/sql/result_set_meta_data.h'
--- drizzled/sql/result_set_meta_data.h	2011-03-29 12:45:08 +0000
+++ drizzled/sql/result_set_meta_data.h	2011-05-04 01:52:37 +0000
@@ -53,10 +53,15 @@
   {
   }
 
+  void setColumnCount(size_t fields)
+  {
+    _columns= fields;
+  }
+
 private: // Member methods
 
 private: // Member variables
-  const size_t _columns;
+  size_t _columns;
 };
 
 std::ostream& operator<<(std::ostream& output, const ResultSetMetaData &result_set);
 
=== added directory 'plugin/http_functions'
=== added file 'plugin/http_functions/http_functions.cc'
--- plugin/http_functions/http_functions.cc	1970-01-01 00:00:00 +0000
+++ plugin/http_functions/http_functions.cc	2011-05-04 01:52:37 +0000
@@ -0,0 +1,199 @@
+/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
+ *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ *
+ *  Copyright (C) 2011 Stewart Smith
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <config.h>
+
+#include <drizzled/plugin/function.h>
+#include <drizzled/function/str/strfunc.h>
+#include <drizzled/charset.h>
+#include <drizzled/error.h>
+
+#include <curl/curl.h>
+
+using namespace drizzled;
+
+class HttpGetFunction :public Item_str_func
+{
+  String result;
+public:
+  HttpGetFunction() :Item_str_func() {}
+  String *val_str(String *);
+  void fix_length_and_dec();
+  const char *func_name() const { return "http_get"; }
+
+  bool check_argument_count(int n)
+  {
+    return n == 1;
+  }
+};
+
+extern "C" size_t
+http_get_result_cb(void *ptr, size_t size, size_t nmemb, void *data);
+
+extern "C" size_t
+http_get_result_cb(void *ptr, size_t size, size_t nmemb, void *data)
+{
+  size_t realsize= size * nmemb;
+  String *result= (String *)data;
+
+  result->reserve(realsize + 1);
+  result->append((const char*)ptr, realsize);
+
+  return realsize;
+}
+
+
+String *HttpGetFunction::val_str(String *str)
+{
+  assert(fixed == 1);
+  String *url = args[0]->val_str(str);
+  CURL *curl;
+  CURLcode retref;
+
+  if ((null_value=args[0]->null_value))
+    return NULL;
+
+  curl= curl_easy_init();
+  curl_easy_setopt(curl, CURLOPT_URL, url->c_ptr_safe());
+  curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, http_get_result_cb);
+  curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&result);
+  curl_easy_setopt(curl, CURLOPT_USERAGENT, "drizzle-http-functions/1.0");
+  retref= curl_easy_perform(curl);
+  curl_easy_cleanup(curl);
+
+  if (retref != 0)
+    my_error(ER_GET_ERRMSG, MYF(0), retref, curl_easy_strerror(retref),
+             "http_get");
+
+  return &result;
+}
+
+void HttpGetFunction::fix_length_and_dec()
+{
+  collation.set(args[0]->collation);
+  max_length = ~0;
+}
+
+class HttpPostFunction :public Item_str_func
+{
+  String result;
+public:
+  HttpPostFunction() :Item_str_func() {}
+  String *val_str(String *);
+  void fix_length_and_dec();
+  const char *func_name() const { return "http_post"; }
+
+  bool check_argument_count(int n)
+  {
+    return n == 2;
+  }
+};
+
+class HttpPostData
+{
+private:
+  String *data;
+  size_t progress;
+
+public:
+  HttpPostData(String* d) : data(d), progress(0) {}
+
+  size_t length() { return data->length(); }
+
+  size_t write(void* dest, size_t size)
+  {
+    size_t to_write= size;
+
+    if ((data->length() - progress) < to_write)
+      to_write= data->length() - progress;
+
+    memcpy(dest, data->ptr() + progress, to_write);
+
+    progress+= to_write;
+
+    return to_write;
+  }
+};
+
+extern "C" size_t
+http_post_readfunc(void *ptr, size_t size, size_t nmemb, void *data);
+
+extern "C" size_t
+http_post_readfunc(void *ptr, size_t size, size_t nmemb, void *data)
+{
+  size_t realsize= size * nmemb;
+  HttpPostData *post_data= (HttpPostData *)data;
+
+  return post_data->write(ptr, realsize);
+}
+
+String *HttpPostFunction::val_str(String *str)
+{
+  assert(fixed == 1);
+  String *url = args[0]->val_str(str);
+  CURL *curl;
+  CURLcode retref;
+  String post_storage;
+  HttpPostData post_data(args[1]->val_str(&post_storage));
+
+  if ((null_value=args[0]->null_value))
+    return NULL;
+
+  curl= curl_easy_init();
+  curl_easy_setopt(curl, CURLOPT_URL, url->c_ptr_safe());
+  curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, http_get_result_cb);
+  curl_easy_setopt(curl, CURLOPT_POST, 1L);
+  curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, post_data.length());
+  curl_easy_setopt(curl, CURLOPT_READDATA, &post_data);
+  curl_easy_setopt(curl, CURLOPT_READFUNCTION, http_post_readfunc);
+  curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&result);
+  curl_easy_setopt(curl, CURLOPT_USERAGENT, "drizzle-http-functions/1.0");
+  retref= curl_easy_perform(curl);
+  curl_easy_cleanup(curl);
+
+  return &result;
+}
+
+void HttpPostFunction::fix_length_and_dec()
+{
+  collation.set(args[0]->collation);
+  max_length = ~0;
+}
+
+static int initialize(drizzled::module::Context &context)
+{
+  curl_global_init(CURL_GLOBAL_ALL);
+  context.add(new plugin::Create_function<HttpGetFunction>("http_get"));
+  context.add(new plugin::Create_function<HttpPostFunction>("http_post"));
+  return 0;
+}
+
+DRIZZLE_DECLARE_PLUGIN
+{
+  DRIZZLE_VERSION_ID,
+  "http_functions",
+  "1.0",
+  "Stewart Smith",
+  "HTTP functions",
+  PLUGIN_LICENSE_GPL,
+  initialize, /* Plugin Init */
+  NULL,   /* depends */
+  NULL    /* config options */
+}
+DRIZZLE_DECLARE_PLUGIN_END;
 
=== added file 'plugin/http_functions/plugin.ac'
--- plugin/http_functions/plugin.ac	1970-01-01 00:00:00 +0000
+++ plugin/http_functions/plugin.ac	2011-05-04 01:52:37 +0000
@@ -0,0 +1,4 @@
+PANDORA_HAVE_LIBCURL
+AS_IF([test "x$ac_cv_libcurl" = "xno"],
+  AC_MSG_WARN([libcurl not found: not building http_functions]))
+PANDORA_ADD_PLUGIN_DEP_LIB([${LIBCURL}])
 
=== added file 'plugin/http_functions/plugin.cnf'
--- plugin/http_functions/plugin.cnf	1970-01-01 00:00:00 +0000
+++ plugin/http_functions/plugin.cnf	2011-05-04 01:52:37 +0000
@@ -0,0 +1,2 @@
+plugin-add=http_functions
+
 
=== added file 'plugin/http_functions/plugin.ini'
--- plugin/http_functions/plugin.ini	1970-01-01 00:00:00 +0000
+++ plugin/http_functions/plugin.ini	2011-05-04 01:52:37 +0000
@@ -0,0 +1,6 @@
+[plugin]
+title=HTTP functions
+description=HTTP functions: HTTP_GET() etc
+sources=http_functions.cc
+build_conditional="${ac_cv_libcurl}" = "yes"
+ldflags=${LTLIBCURL}
 
=== added directory 'plugin/json_server'
=== added directory 'plugin/json_server/json'
=== added file 'plugin/json_server/json/autolink.h'
--- plugin/json_server/json/autolink.h	1970-01-01 00:00:00 +0000
+++ plugin/json_server/json/autolink.h	2011-05-04 01:52:37 +0000
@@ -0,0 +1,58 @@
+/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ * 
+ *  JSON Library, originally from http://jsoncpp.sourceforge.net/
+ *
+ *  Copyright (C) 2011 Stewart Smith
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are
+ *  met:
+ *
+ *      * Redistributions of source code must retain the above copyright
+ *  notice, this list of conditions and the following disclaimer.
+ *
+ *      * Redistributions in binary form must reproduce the above
+ *  copyright notice, this list of conditions and the following disclaimer
+ *  in the documentation and/or other materials provided with the
+ *  distribution.
+ *
+ *      * The names of its contributors may not be used to endorse or
+ *  promote products derived from this software without specific prior
+ *  written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#pragma once
+
+#ifndef JSON_AUTOLINK_H_INCLUDED
+# define JSON_AUTOLINK_H_INCLUDED
+
+# include "config.h"
+
+# ifdef JSON_IN_CPPTL
+#  include <cpptl/cpptl_autolink.h>
+# endif
+
+# if !defined(JSON_NO_AUTOLINK)  &&  !defined(JSON_DLL_BUILD)  &&  !defined(JSON_IN_CPPTL)
+#  define CPPTL_AUTOLINK_NAME "json"
+#  undef CPPTL_AUTOLINK_DLL
+#  ifdef JSON_DLL
+#   define CPPTL_AUTOLINK_DLL
+#  endif
+#  include "autolink.h"
+# endif
+
+#endif // JSON_AUTOLINK_H_INCLUDED
 
=== added file 'plugin/json_server/json/config.h'
--- plugin/json_server/json/config.h	1970-01-01 00:00:00 +0000
+++ plugin/json_server/json/config.h	2011-05-04 01:52:37 +0000
@@ -0,0 +1,81 @@
+/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ * 
+ *  JSON Library, originally from http://jsoncpp.sourceforge.net/
+ *
+ *  Copyright (C) 2011 Stewart Smith
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are
+ *  met:
+ *
+ *      * Redistributions of source code must retain the above copyright
+ *  notice, this list of conditions and the following disclaimer.
+ *
+ *      * Redistributions in binary form must reproduce the above
+ *  copyright notice, this list of conditions and the following disclaimer
+ *  in the documentation and/or other materials provided with the
+ *  distribution.
+ *
+ *      * The names of its contributors may not be used to endorse or
+ *  promote products derived from this software without specific prior
+ *  written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#pragma once
+#ifndef JSON_CONFIG_H_INCLUDED
+# define JSON_CONFIG_H_INCLUDED
+
+/// 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 defined, indicates that Json specific container should be used
+/// (hash table & simple deque container with customizable allocator).
+/// THIS FEATURE IS STILL EXPERIMENTAL!
+//#  define JSON_VALUE_USE_INTERNAL_MAP 1
+/// Force usage of standard new/malloc based allocator instead of memory pool based allocator.
+/// The memory pools allocator used optimization (initializing Value and ValueInternalLink
+/// as if it was a POD) that may cause some validation tool to report errors.
+/// Only has effects if JSON_VALUE_USE_INTERNAL_MAP is defined.
+//#  define JSON_USE_SIMPLE_INTERNAL_ALLOCATOR 1
+
+/// If defined, indicates that Json use exception to report invalid type manipulation
+/// instead of C assert macro.
+# define JSON_USE_EXCEPTION 1
+
+# 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)
+#  define JSON_API __declspec(dllexport)
+# elif defined(JSON_DLL)
+#  define JSON_API __declspec(dllimport)
+# else
+#  define JSON_API
+# endif
+
+#endif // JSON_CONFIG_H_INCLUDED
 
=== added file 'plugin/json_server/json/features.h'
--- plugin/json_server/json/features.h	1970-01-01 00:00:00 +0000
+++ plugin/json_server/json/features.h	2011-05-04 01:52:37 +0000
@@ -0,0 +1,80 @@
+/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ * 
+ *  JSON Library, originally from http://jsoncpp.sourceforge.net/
+ *
+ *  Copyright (C) 2011 Stewart Smith
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are
+ *  met:
+ *
+ *      * Redistributions of source code must retain the above copyright
+ *  notice, this list of conditions and the following disclaimer.
+ *
+ *      * Redistributions in binary form must reproduce the above
+ *  copyright notice, this list of conditions and the following disclaimer
+ *  in the documentation and/or other materials provided with the
+ *  distribution.
+ *
+ *      * The names of its contributors may not be used to endorse or
+ *  promote products derived from this software without specific prior
+ *  written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#pragma once
+#ifndef CPPTL_JSON_FEATURES_H_INCLUDED
+# define CPPTL_JSON_FEATURES_H_INCLUDED
+
+# include "forwards.h"
+
+namespace Json {
+
+   /** \brief Configuration passed to reader and writer.
+    * This configuration object can be used to force the Reader or Writer
+    * to behave in a standard conforming way.
+    */
+   class JSON_API Features
+   {
+   public:
+      /** \brief A configuration that allows all features and assumes all strings are UTF-8.
+       * - C & C++ comments are allowed
+       * - Root object can be any JSON value
+       * - Assumes Value strings are encoded in UTF-8
+       */
+      static Features all();
+
+      /** \brief A configuration that is strictly compatible with the JSON specification.
+       * - Comments are forbidden.
+       * - Root object must be either an array or an object value.
+       * - Assumes Value strings are encoded in UTF-8
+       */
+      static Features strictMode();
+
+      /** \brief Initialize the configuration like JsonConfig::allFeatures;
+       */
+      Features();
+
+      /// \c true if comments are allowed. Default: \c true.
+      bool allowComments_;
+
+      /// \c true if root must be either an array or an object value. Default: \c false.
+      bool strictRoot_;
+   };
+
+} // namespace Json
+
+#endif // CPPTL_JSON_FEATURES_H_INCLUDED
 
=== added file 'plugin/json_server/json/forwards.h'
--- plugin/json_server/json/forwards.h	1970-01-01 00:00:00 +0000
+++ plugin/json_server/json/forwards.h	2011-05-04 01:52:37 +0000
@@ -0,0 +1,77 @@
+/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ * 
+ *  JSON Library, originally from http://jsoncpp.sourceforge.net/
+ *
+ *  Copyright (C) 2011 Stewart Smith
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are
+ *  met:
+ *
+ *      * Redistributions of source code must retain the above copyright
+ *  notice, this list of conditions and the following disclaimer.
+ *
+ *      * Redistributions in binary form must reproduce the above
+ *  copyright notice, this list of conditions and the following disclaimer
+ *  in the documentation and/or other materials provided with the
+ *  distribution.
+ *
+ *      * The names of its contributors may not be used to endorse or
+ *  promote products derived from this software without specific prior
+ *  written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#pragma once
+#ifndef JSON_FORWARDS_H_INCLUDED
+# define JSON_FORWARDS_H_INCLUDED
+
+# include "config.h"
+
+namespace Json {
+
+   // writer.h
+   class FastWriter;
+   class StyledWriter;
+
+   // reader.h
+   class Reader;
+
+   // features.h
+   class Features;
+
+   // value.h
+   typedef int Int;
+   typedef unsigned int UInt;
+   class StaticString;
+   class Path;
+   class PathArgument;
+   class Value;
+   class ValueIteratorBase;
+   class ValueIterator;
+   class ValueConstIterator;
+#ifdef JSON_VALUE_USE_INTERNAL_MAP
+   class ValueAllocator;
+   class ValueMapAllocator;
+   class ValueInternalLink;
+   class ValueInternalArray;
+   class ValueInternalMap;
+#endif // #ifdef JSON_VALUE_USE_INTERNAL_MAP
+
+} // namespace Json
+
+
+#endif // JSON_FORWARDS_H_INCLUDED
 
=== added file 'plugin/json_server/json/json.h'
--- plugin/json_server/json/json.h	1970-01-01 00:00:00 +0000
+++ plugin/json_server/json/json.h	2011-05-04 01:52:37 +0000
@@ -0,0 +1,48 @@
+/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ * 
+ *  JSON Library, originally from http://jsoncpp.sourceforge.net/
+ *
+ *  Copyright (C) 2011 Stewart Smith
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are
+ *  met:
+ *
+ *      * Redistributions of source code must retain the above copyright
+ *  notice, this list of conditions and the following disclaimer.
+ *
+ *      * Redistributions in binary form must reproduce the above
+ *  copyright notice, this list of conditions and the following disclaimer
+ *  in the documentation and/or other materials provided with the
+ *  distribution.
+ *
+ *      * The names of its contributors may not be used to endorse or
+ *  promote products derived from this software without specific prior
+ *  written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#pragma once
+#ifndef JSON_JSON_H_INCLUDED
+# define JSON_JSON_H_INCLUDED
+
+# include "autolink.h"
+# include "value.h"
+# include "reader.h"
+# include "writer.h"
+# include "features.h"
+
+#endif // JSON_JSON_H_INCLUDED
 
=== added file 'plugin/json_server/json/json_batchallocator.h'
--- plugin/json_server/json/json_batchallocator.h	1970-01-01 00:00:00 +0000
+++ plugin/json_server/json/json_batchallocator.h	2011-05-04 01:52:37 +0000
@@ -0,0 +1,163 @@
+/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ * 
+ *  JSON Library, originally from http://jsoncpp.sourceforge.net/
+ *
+ *  Copyright (C) 2011 Stewart Smith
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are
+ *  met:
+ *
+ *      * Redistributions of source code must retain the above copyright
+ *  notice, this list of conditions and the following disclaimer.
+ *
+ *      * Redistributions in binary form must reproduce the above
+ *  copyright notice, this list of conditions and the following disclaimer
+ *  in the documentation and/or other materials provided with the
+ *  distribution.
+ *
+ *      * The names of its contributors may not be used to endorse or
+ *  promote products derived from this software without specific prior
+ *  written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#pragma once
+#ifndef JSONCPP_BATCHALLOCATOR_H_INCLUDED
+# define JSONCPP_BATCHALLOCATOR_H_INCLUDED
+
+# include <stdlib.h>
+# include <assert.h>
+
+# ifndef JSONCPP_DOC_EXCLUDE_IMPLEMENTATION
+
+namespace Json {
+
+/* Fast memory allocator.
+ *
+ * This memory allocator allocates memory for a batch of object (specified by
+ * the page size, the number of object in each page).
+ *
+ * It does not allow the destruction of a single object. All the allocated objects
+ * can be destroyed at once. The memory can be either released or reused for future
+ * allocation.
+ * 
+ * The in-place new operator must be used to construct the object using the pointer
+ * returned by allocate.
+ */
+template<typename AllocatedType
+        ,const unsigned int objectPerAllocation>
+class BatchAllocator
+{
+public:
+   typedef AllocatedType Type;
+
+   BatchAllocator( unsigned int objectsPerPage = 255 )
+      : freeHead_( 0 )
+      , objectsPerPage_( objectsPerPage )
+   {
+//      printf( "Size: %d => %s\n", sizeof(AllocatedType), typeid(AllocatedType).name() );
+      assert( sizeof(AllocatedType) * objectPerAllocation >= sizeof(AllocatedType *) ); // We must be able to store a slist in the object free space.
+      assert( objectsPerPage >= 16 );
+      batches_ = allocateBatch( 0 );   // allocated a dummy page
+      currentBatch_ = batches_;
+   }
+
+   ~BatchAllocator()
+   {
+      for ( BatchInfo *batch = batches_; batch;  )
+      {
+         BatchInfo *nextBatch = batch->next_;
+         free( batch );
+         batch = nextBatch;
+      }
+   }
+
+   /// allocate space for an array of objectPerAllocation object.
+   /// @warning it is the responsability of the caller to call objects constructors.
+   AllocatedType *allocate()
+   {
+      if ( freeHead_ ) // returns node from free list.
+      {
+         AllocatedType *object = freeHead_;
+         freeHead_ = *(AllocatedType **)object;
+         return object;
+      }
+      if ( currentBatch_->used_ == currentBatch_->end_ )
+      {
+         currentBatch_ = currentBatch_->next_;
+         while ( currentBatch_  &&  currentBatch_->used_ == currentBatch_->end_ )
+            currentBatch_ = currentBatch_->next_;
+
+         if ( !currentBatch_  ) // no free batch found, allocate a new one
+         { 
+            currentBatch_ = allocateBatch( objectsPerPage_ );
+            currentBatch_->next_ = batches_; // insert at the head of the list
+            batches_ = currentBatch_;
+         }
+      }
+      AllocatedType *allocated = currentBatch_->used_;
+      currentBatch_->used_ += objectPerAllocation;
+      return allocated;
+   }
+
+   /// Release the object.
+   /// @warning it is the responsability of the caller to actually destruct the object.
+   void release( AllocatedType *object )
+   {
+      assert( object != 0 );
+      *(AllocatedType **)object = freeHead_;
+      freeHead_ = object;
+   }
+
+private:
+   struct BatchInfo
+   {
+      BatchInfo *next_;
+      AllocatedType *used_;
+      AllocatedType *end_;
+      AllocatedType buffer_[objectPerAllocation];
+   };
+
+   // disabled copy constructor and assignement operator.
+   BatchAllocator( const BatchAllocator & );
+   void operator =( const BatchAllocator &);
+
+   static BatchInfo *allocateBatch( unsigned int objectsPerPage )
+   {
+      const unsigned int mallocSize = sizeof(BatchInfo) - sizeof(AllocatedType)* objectPerAllocation
+                                + sizeof(AllocatedType) * objectPerAllocation * objectsPerPage;
+      BatchInfo *batch = static_cast<BatchInfo*>( malloc( mallocSize ) );
+      batch->next_ = 0;
+      batch->used_ = batch->buffer_;
+      batch->end_ = batch->buffer_ + objectsPerPage;
+      return batch;
+   }
+
+   BatchInfo *batches_;
+   BatchInfo *currentBatch_;
+   /// Head of a single linked list within the allocated space of freeed object
+   AllocatedType *freeHead_;
+   unsigned int objectsPerPage_;
+};
+
+
+} // namespace Json
+
+# endif // ifndef JSONCPP_DOC_INCLUDE_IMPLEMENTATION
+
+#endif // JSONCPP_BATCHALLOCATOR_H_INCLUDED
+
 
=== added file 'plugin/json_server/json/json_internalarray.inl'
--- plugin/json_server/json/json_internalarray.inl	1970-01-01 00:00:00 +0000
+++ plugin/json_server/json/json_internalarray.inl	2011-05-04 01:52:37 +0000
@@ -0,0 +1,486 @@
+/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ * 
+ *  JSON Library, originally from http://jsoncpp.sourceforge.net/
+ *
+ *  Copyright (C) 2011 Stewart Smith
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are
+ *  met:
+ *
+ *      * Redistributions of source code must retain the above copyright
+ *  notice, this list of conditions and the following disclaimer.
+ *
+ *      * Redistributions in binary form must reproduce the above
+ *  copyright notice, this list of conditions and the following disclaimer
+ *  in the documentation and/or other materials provided with the
+ *  distribution.
+ *
+ *      * The names of its contributors may not be used to endorse or
+ *  promote products derived from this software without specific prior
+ *  written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#pragma once
+// included by json_value.cpp
+// everything is within Json namespace
+
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// class ValueInternalArray
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+
+ValueArrayAllocator::~ValueArrayAllocator()
+{
+}
+
+// //////////////////////////////////////////////////////////////////
+// class DefaultValueArrayAllocator
+// //////////////////////////////////////////////////////////////////
+#ifdef JSON_USE_SIMPLE_INTERNAL_ALLOCATOR
+class DefaultValueArrayAllocator : public ValueArrayAllocator
+{
+public: // overridden from ValueArrayAllocator
+   virtual ~DefaultValueArrayAllocator()
+   {
+   }
+
+   virtual ValueInternalArray *newArray()
+   {
+      return new ValueInternalArray();
+   }
+
+   virtual ValueInternalArray *newArrayCopy( const ValueInternalArray &other )
+   {
+      return new ValueInternalArray( other );
+   }
+
+   virtual void destructArray( ValueInternalArray *array )
+   {
+      delete array;
+   }
+
+   virtual void reallocateArrayPageIndex( Value **&indexes, 
+                                          ValueInternalArray::PageIndex &indexCount,
+                                          ValueInternalArray::PageIndex minNewIndexCount )
+   {
+      ValueInternalArray::PageIndex newIndexCount = (indexCount*3)/2 + 1;
+      if ( minNewIndexCount > newIndexCount )
+         newIndexCount = minNewIndexCount;
+      void *newIndexes = realloc( indexes, sizeof(Value*) * newIndexCount );
+      if ( !newIndexes )
+         throw std::bad_alloc();
+      indexCount = newIndexCount;
+      indexes = static_cast<Value **>( newIndexes );
+   }
+   virtual void releaseArrayPageIndex( Value **indexes, 
+                                       ValueInternalArray::PageIndex indexCount )
+   {
+      if ( indexes )
+         free( indexes );
+   }
+
+   virtual Value *allocateArrayPage()
+   {
+      return static_cast<Value *>( malloc( sizeof(Value) * ValueInternalArray::itemsPerPage ) );
+   }
+
+   virtual void releaseArrayPage( Value *value )
+   {
+      if ( value )
+         free( value );
+   }
+};
+
+#else // #ifdef JSON_USE_SIMPLE_INTERNAL_ALLOCATOR
+/// @todo make this thread-safe (lock when accessign batch allocator)
+class DefaultValueArrayAllocator : public ValueArrayAllocator
+{
+public: // overridden from ValueArrayAllocator
+   virtual ~DefaultValueArrayAllocator()
+   {
+   }
+
+   virtual ValueInternalArray *newArray()
+   {
+      ValueInternalArray *array = arraysAllocator_.allocate();
+      new (array) ValueInternalArray(); // placement new
+      return array;
+   }
+
+   virtual ValueInternalArray *newArrayCopy( const ValueInternalArray &other )
+   {
+      ValueInternalArray *array = arraysAllocator_.allocate();
+      new (array) ValueInternalArray( other ); // placement new
+      return array;
+   }
+
+   virtual void destructArray( ValueInternalArray *array )
+   {
+      if ( array )
+      {
+         array->~ValueInternalArray();
+         arraysAllocator_.release( array );
+      }
+   }
+
+   virtual void reallocateArrayPageIndex( Value **&indexes, 
+                                          ValueInternalArray::PageIndex &indexCount,
+                                          ValueInternalArray::PageIndex minNewIndexCount )
+   {
+      ValueInternalArray::PageIndex newIndexCount = (indexCount*3)/2 + 1;
+      if ( minNewIndexCount > newIndexCount )
+         newIndexCount = minNewIndexCount;
+      void *newIndexes = realloc( indexes, sizeof(Value*) * newIndexCount );
+      if ( !newIndexes )
+         throw std::bad_alloc();
+      indexCount = newIndexCount;
+      indexes = static_cast<Value **>( newIndexes );
+   }
+   virtual void releaseArrayPageIndex( Value **indexes, 
+                                       ValueInternalArray::PageIndex indexCount )
+   {
+      if ( indexes )
+         free( indexes );
+   }
+
+   virtual Value *allocateArrayPage()
+   {
+      return static_cast<Value *>( pagesAllocator_.allocate() );
+   }
+
+   virtual void releaseArrayPage( Value *value )
+   {
+      if ( value )
+         pagesAllocator_.release( value );
+   }
+private:
+   BatchAllocator<ValueInternalArray,1> arraysAllocator_;
+   BatchAllocator<Value,ValueInternalArray::itemsPerPage> pagesAllocator_;
+};
+#endif // #ifdef JSON_USE_SIMPLE_INTERNAL_ALLOCATOR
+
+static ValueArrayAllocator *&arrayAllocator()
+{
+   static DefaultValueArrayAllocator defaultAllocator;
+   static ValueArrayAllocator *arrayAllocator = &defaultAllocator;
+   return arrayAllocator;
+}
+
+static struct DummyArrayAllocatorInitializer {
+   DummyArrayAllocatorInitializer() 
+   {
+      arrayAllocator();      // ensure arrayAllocator() statics are initialized before main().
+   }
+} dummyArrayAllocatorInitializer;
+
+// //////////////////////////////////////////////////////////////////
+// class ValueInternalArray
+// //////////////////////////////////////////////////////////////////
+bool 
+ValueInternalArray::equals( const IteratorState &x, 
+                            const IteratorState &other )
+{
+   return x.array_ == other.array_  
+          &&  x.currentItemIndex_ == other.currentItemIndex_  
+          &&  x.currentPageIndex_ == other.currentPageIndex_;
+}
+
+
+void 
+ValueInternalArray::increment( IteratorState &it )
+{
+   JSON_ASSERT_MESSAGE( it.array_  &&
+      (it.currentPageIndex_ - it.array_->pages_)*itemsPerPage + it.currentItemIndex_
+      != it.array_->size_,
+      "ValueInternalArray::increment(): moving iterator beyond end" );
+   ++(it.currentItemIndex_);
+   if ( it.currentItemIndex_ == itemsPerPage )
+   {
+      it.currentItemIndex_ = 0;
+      ++(it.currentPageIndex_);
+   }
+}
+
+
+void 
+ValueInternalArray::decrement( IteratorState &it )
+{
+   JSON_ASSERT_MESSAGE( it.array_  &&  it.currentPageIndex_ == it.array_->pages_ 
+                        &&  it.currentItemIndex_ == 0,
+      "ValueInternalArray::decrement(): moving iterator beyond end" );
+   if ( it.currentItemIndex_ == 0 )
+   {
+      it.currentItemIndex_ = itemsPerPage-1;
+      --(it.currentPageIndex_);
+   }
+   else
+   {
+      --(it.currentItemIndex_);
+   }
+}
+
+
+Value &
+ValueInternalArray::unsafeDereference( const IteratorState &it )
+{
+   return (*(it.currentPageIndex_))[it.currentItemIndex_];
+}
+
+
+Value &
+ValueInternalArray::dereference( const IteratorState &it )
+{
+   JSON_ASSERT_MESSAGE( it.array_  &&
+      (it.currentPageIndex_ - it.array_->pages_)*itemsPerPage + it.currentItemIndex_
+      < it.array_->size_,
+      "ValueInternalArray::dereference(): dereferencing invalid iterator" );
+   return unsafeDereference( it );
+}
+
+void 
+ValueInternalArray::makeBeginIterator( IteratorState &it ) const
+{
+   it.array_ = const_cast<ValueInternalArray *>( this );
+   it.currentItemIndex_ = 0;
+   it.currentPageIndex_ = pages_;
+}
+
+
+void 
+ValueInternalArray::makeIterator( IteratorState &it, ArrayIndex index ) const
+{
+   it.array_ = const_cast<ValueInternalArray *>( this );
+   it.currentItemIndex_ = index % itemsPerPage;
+   it.currentPageIndex_ = pages_ + index / itemsPerPage;
+}
+
+
+void 
+ValueInternalArray::makeEndIterator( IteratorState &it ) const
+{
+   makeIterator( it, size_ );
+}
+
+
+ValueInternalArray::ValueInternalArray()
+   : pages_( 0 )
+   , size_( 0 )
+   , pageCount_( 0 )
+{
+}
+
+
+ValueInternalArray::ValueInternalArray( const ValueInternalArray &other )
+   : pages_( 0 )
+   , pageCount_( 0 )
+   , size_( other.size_ )
+{
+   PageIndex minNewPages = other.size_ / itemsPerPage;
+   arrayAllocator()->reallocateArrayPageIndex( pages_, pageCount_, minNewPages );
+   JSON_ASSERT_MESSAGE( pageCount_ >= minNewPages, 
+                        "ValueInternalArray::reserve(): bad reallocation" );
+   IteratorState itOther;
+   other.makeBeginIterator( itOther );
+   Value *value;
+   for ( ArrayIndex index = 0; index < size_; ++index, increment(itOther) )
+   {
+      if ( index % itemsPerPage == 0 )
+      {
+         PageIndex pageIndex = index / itemsPerPage;
+         value = arrayAllocator()->allocateArrayPage();
+         pages_[pageIndex] = value;
+      }
+      new (value) Value( dereference( itOther ) );
+   }
+}
+
+
+ValueInternalArray &
+ValueInternalArray::operator =( const ValueInternalArray &other )
+{
+   ValueInternalArray temp( other );
+   swap( temp );
+   return *this;
+}
+
+
+ValueInternalArray::~ValueInternalArray()
+{
+   // destroy all constructed items
+   IteratorState it;
+   IteratorState itEnd;
+   makeBeginIterator( it);
+   makeEndIterator( itEnd );
+   for ( ; !equals(it,itEnd); increment(it) )
+   {
+      Value *value = &dereference(it);
+      value->~Value();
+   }
+   // release all pages
+   PageIndex lastPageIndex = size_ / itemsPerPage;
+   for ( PageIndex pageIndex = 0; pageIndex < lastPageIndex; ++pageIndex )
+      arrayAllocator()->releaseArrayPage( pages_[pageIndex] );
+   // release pages index
+   arrayAllocator()->releaseArrayPageIndex( pages_, pageCount_ );
+}
+
+
+void 
+ValueInternalArray::swap( ValueInternalArray &other )
+{
+   Value **tempPages = pages_;
+   pages_ = other.pages_;
+   other.pages_ = tempPages;
+   ArrayIndex tempSize = size_;
+   size_ = other.size_;
+   other.size_ = tempSize;
+   PageIndex tempPageCount = pageCount_;
+   pageCount_ = other.pageCount_;
+   other.pageCount_ = tempPageCount;
+}
+
+void 
+ValueInternalArray::clear()
+{
+   ValueInternalArray dummy;
+   swap( dummy );
+}
+
+
+void 
+ValueInternalArray::resize( ArrayIndex newSize )
+{
+   if ( newSize == 0 )
+      clear();
+   else if ( newSize < size_ )
+   {
+      IteratorState it;
+      IteratorState itEnd;
+      makeIterator( it, newSize );
+      makeIterator( itEnd, size_ );
+      for ( ; !equals(it,itEnd); increment(it) )
+      {
+         Value *value = &dereference(it);
+         value->~Value();
+      }
+      PageIndex pageIndex = (newSize + itemsPerPage - 1) / itemsPerPage;
+      PageIndex lastPageIndex = size_ / itemsPerPage;
+      for ( ; pageIndex < lastPageIndex; ++pageIndex )
+         arrayAllocator()->releaseArrayPage( pages_[pageIndex] );
+      size_ = newSize;
+   }
+   else if ( newSize > size_ )
+      resolveReference( newSize );
+}
+
+
+void 
+ValueInternalArray::makeIndexValid( ArrayIndex index )
+{
+   // Need to enlarge page index ?
+   if ( index >= pageCount_ * itemsPerPage )
+   {
+      PageIndex minNewPages = (index + 1) / itemsPerPage;
+      arrayAllocator()->reallocateArrayPageIndex( pages_, pageCount_, minNewPages );
+      JSON_ASSERT_MESSAGE( pageCount_ >= minNewPages, "ValueInternalArray::reserve(): bad reallocation" );
+   }
+
+   // Need to allocate new pages ?
+   ArrayIndex nextPageIndex = 
+      (size_ % itemsPerPage) != 0 ? size_ - (size_%itemsPerPage) + itemsPerPage
+                                  : size_;
+   if ( nextPageIndex <= index )
+   {
+      PageIndex pageIndex = nextPageIndex / itemsPerPage;
+      PageIndex pageToAllocate = (index - nextPageIndex) / itemsPerPage + 1;
+      for ( ; pageToAllocate-- > 0; ++pageIndex )
+         pages_[pageIndex] = arrayAllocator()->allocateArrayPage();
+   }
+
+   // Initialize all new entries
+   IteratorState it;
+   IteratorState itEnd;
+   makeIterator( it, size_ );
+   size_ = index + 1;
+   makeIterator( itEnd, size_ );
+   for ( ; !equals(it,itEnd); increment(it) )
+   {
+      Value *value = &dereference(it);
+      new (value) Value(); // Construct a default value using placement new
+   }
+}
+
+Value &
+ValueInternalArray::resolveReference( ArrayIndex index )
+{
+   if ( index >= size_ )
+      makeIndexValid( index );
+   return pages_[index/itemsPerPage][index%itemsPerPage];
+}
+
+Value *
+ValueInternalArray::find( ArrayIndex index ) const
+{
+   if ( index >= size_ )
+      return 0;
+   return &(pages_[index/itemsPerPage][index%itemsPerPage]);
+}
+
+ValueInternalArray::ArrayIndex 
+ValueInternalArray::size() const
+{
+   return size_;
+}
+
+int 
+ValueInternalArray::distance( const IteratorState &x, const IteratorState &y )
+{
+   return indexOf(y) - indexOf(x);
+}
+
+
+ValueInternalArray::ArrayIndex 
+ValueInternalArray::indexOf( const IteratorState &iterator )
+{
+   if ( !iterator.array_ )
+      return ArrayIndex(-1);
+   return ArrayIndex(
+      (iterator.currentPageIndex_ - iterator.array_->pages_) * itemsPerPage 
+      + iterator.currentItemIndex_ );
+}
+
+
+int 
+ValueInternalArray::compare( const ValueInternalArray &other ) const
+{
+   int sizeDiff( size_ - other.size_ );
+   if ( sizeDiff != 0 )
+      return sizeDiff;
+   
+   for ( ArrayIndex index =0; index < size_; ++index )
+   {
+      int diff = pages_[index/itemsPerPage][index%itemsPerPage].compare( 
+         other.pages_[index/itemsPerPage][index%itemsPerPage] );
+      if ( diff != 0 )
+         return diff;
+   }
+   return 0;
+}
 
=== added file 'plugin/json_server/json/json_internalmap.inl'
--- plugin/json_server/json/json_internalmap.inl	1970-01-01 00:00:00 +0000
+++ plugin/json_server/json/json_internalmap.inl	2011-05-04 01:52:37 +0000
@@ -0,0 +1,645 @@
+/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ * 
+ *  JSON Library, originally from http://jsoncpp.sourceforge.net/
+ *
+ *  Copyright (C) 2011 Stewart Smith
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are
+ *  met:
+ *
+ *      * Redistributions of source code must retain the above copyright
+ *  notice, this list of conditions and the following disclaimer.
+ *
+ *      * Redistributions in binary form must reproduce the above
+ *  copyright notice, this list of conditions and the following disclaimer
+ *  in the documentation and/or other materials provided with the
+ *  distribution.
+ *
+ *      * The names of its contributors may not be used to endorse or
+ *  promote products derived from this software without specific prior
+ *  written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#pragma once
+// included by json_value.cpp
+// everything is within Json namespace
+
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// class ValueInternalMap
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+
+/** \internal MUST be safely initialized using memset( this, 0, sizeof(ValueInternalLink) );
+   * This optimization is used by the fast allocator.
+   */
+ValueInternalLink::ValueInternalLink()
+   : previous_( 0 )
+   , next_( 0 )
+{
+}
+
+ValueInternalLink::~ValueInternalLink()
+{ 
+   for ( int index =0; index < itemPerLink; ++index )
+   {
+      if ( !items_[index].isItemAvailable() )
+      {
+         if ( !items_[index].isMemberNameStatic() )
+            free( keys_[index] );
+      }
+      else
+         break;
+   }
+}
+
+
+
+ValueMapAllocator::~ValueMapAllocator()
+{
+}
+
+#ifdef JSON_USE_SIMPLE_INTERNAL_ALLOCATOR
+class DefaultValueMapAllocator : public ValueMapAllocator
+{
+public: // overridden from ValueMapAllocator
+   virtual ValueInternalMap *newMap()
+   {
+      return new ValueInternalMap();
+   }
+
+   virtual ValueInternalMap *newMapCopy( const ValueInternalMap &other )
+   {
+      return new ValueInternalMap( other );
+   }
+
+   virtual void destructMap( ValueInternalMap *map )
+   {
+      delete map;
+   }
+
+   virtual ValueInternalLink *allocateMapBuckets( unsigned int size )
+   {
+      return new ValueInternalLink[size];
+   }
+
+   virtual void releaseMapBuckets( ValueInternalLink *links )
+   {
+      delete [] links;
+   }
+
+   virtual ValueInternalLink *allocateMapLink()
+   {
+      return new ValueInternalLink();
+   }
+
+   virtual void releaseMapLink( ValueInternalLink *link )
+   {
+      delete link;
+   }
+};
+#else
+/// @todo make this thread-safe (lock when accessign batch allocator)
+class DefaultValueMapAllocator : public ValueMapAllocator
+{
+public: // overridden from ValueMapAllocator
+   virtual ValueInternalMap *newMap()
+   {
+      ValueInternalMap *map = mapsAllocator_.allocate();
+      new (map) ValueInternalMap(); // placement new
+      return map;
+   }
+
+   virtual ValueInternalMap *newMapCopy( const ValueInternalMap &other )
+   {
+      ValueInternalMap *map = mapsAllocator_.allocate();
+      new (map) ValueInternalMap( other ); // placement new
+      return map;
+   }
+
+   virtual void destructMap( ValueInternalMap *map )
+   {
+      if ( map )
+      {
+         map->~ValueInternalMap();
+         mapsAllocator_.release( map );
+      }
+   }
+
+   virtual ValueInternalLink *allocateMapBuckets( unsigned int size )
+   {
+      return new ValueInternalLink[size];
+   }
+
+   virtual void releaseMapBuckets( ValueInternalLink *links )
+   {
+      delete [] links;
+   }
+
+   virtual ValueInternalLink *allocateMapLink()
+   {
+      ValueInternalLink *link = linksAllocator_.allocate();
+      memset( link, 0, sizeof(ValueInternalLink) );
+      return link;
+   }
+
+   virtual void releaseMapLink( ValueInternalLink *link )
+   {
+      link->~ValueInternalLink();
+      linksAllocator_.release( link );
+   }
+private:
+   BatchAllocator<ValueInternalMap,1> mapsAllocator_;
+   BatchAllocator<ValueInternalLink,1> linksAllocator_;
+};
+#endif
+
+static ValueMapAllocator *&mapAllocator()
+{
+   static DefaultValueMapAllocator defaultAllocator;
+   static ValueMapAllocator *mapAllocator = &defaultAllocator;
+   return mapAllocator;
+}
+
+static struct DummyMapAllocatorInitializer {
+   DummyMapAllocatorInitializer() 
+   {
+      mapAllocator();      // ensure mapAllocator() statics are initialized before main().
+   }
+} dummyMapAllocatorInitializer;
+
+
+
+// h(K) = value * K >> w ; with w = 32 & K prime w.r.t. 2^32.
+
+/*
+use linked list hash map. 
+buckets array is a container.
+linked list element contains 6 key/values. (memory = (16+4) * 6 + 4 = 124)
+value have extra state: valid, available, deleted
+*/
+
+
+ValueInternalMap::ValueInternalMap()
+   : buckets_( 0 )
+   , tailLink_( 0 )
+   , bucketsSize_( 0 )
+   , itemCount_( 0 )
+{
+}
+
+
+ValueInternalMap::ValueInternalMap( const ValueInternalMap &other )
+   : buckets_( 0 )
+   , tailLink_( 0 )
+   , bucketsSize_( 0 )
+   , itemCount_( 0 )
+{
+   reserve( other.itemCount_ );
+   IteratorState it;
+   IteratorState itEnd;
+   other.makeBeginIterator( it );
+   other.makeEndIterator( itEnd );
+   for ( ; !equals(it,itEnd); increment(it) )
+   {
+      bool isStatic;
+      const char *memberName = key( it, isStatic );
+      const Value &aValue = value( it );
+      resolveReference(memberName, isStatic) = aValue;
+   }
+}
+
+
+ValueInternalMap &
+ValueInternalMap::operator =( const ValueInternalMap &other )
+{
+   ValueInternalMap dummy( other );
+   swap( dummy );
+   return *this;
+}
+
+
+ValueInternalMap::~ValueInternalMap()
+{
+   if ( buckets_ )
+   {
+      for ( BucketIndex bucketIndex =0; bucketIndex < bucketsSize_; ++bucketIndex )
+      {
+         ValueInternalLink *link = buckets_[bucketIndex].next_;
+         while ( link )
+         {
+            ValueInternalLink *linkToRelease = link;
+            link = link->next_;
+            mapAllocator()->releaseMapLink( linkToRelease );
+         }
+      }
+      mapAllocator()->releaseMapBuckets( buckets_ );
+   }
+}
+
+
+void 
+ValueInternalMap::swap( ValueInternalMap &other )
+{
+   ValueInternalLink *tempBuckets = buckets_;
+   buckets_ = other.buckets_;
+   other.buckets_ = tempBuckets;
+   ValueInternalLink *tempTailLink = tailLink_;
+   tailLink_ = other.tailLink_;
+   other.tailLink_ = tempTailLink;
+   BucketIndex tempBucketsSize = bucketsSize_;
+   bucketsSize_ = other.bucketsSize_;
+   other.bucketsSize_ = tempBucketsSize;
+   BucketIndex tempItemCount = itemCount_;
+   itemCount_ = other.itemCount_;
+   other.itemCount_ = tempItemCount;
+}
+
+
+void 
+ValueInternalMap::clear()
+{
+   ValueInternalMap dummy;
+   swap( dummy );
+}
+
+
+ValueInternalMap::BucketIndex 
+ValueInternalMap::size() const
+{
+   return itemCount_;
+}
+
+bool 
+ValueInternalMap::reserveDelta( BucketIndex growth )
+{
+   return reserve( itemCount_ + growth );
+}
+
+bool 
+ValueInternalMap::reserve( BucketIndex newItemCount )
+{
+   if ( !buckets_  &&  newItemCount > 0 )
+   {
+      buckets_ = mapAllocator()->allocateMapBuckets( 1 );
+      bucketsSize_ = 1;
+      tailLink_ = &buckets_[0];
+   }
+//   BucketIndex idealBucketCount = (newItemCount + ValueInternalLink::itemPerLink) / ValueInternalLink::itemPerLink;
+   return true;
+}
+
+
+const Value *
+ValueInternalMap::find( const char *key ) const
+{
+   if ( !bucketsSize_ )
+      return 0;
+   HashKey hashedKey = hash( key );
+   BucketIndex bucketIndex = hashedKey % bucketsSize_;
+   for ( const ValueInternalLink *current = &buckets_[bucketIndex]; 
+         current != 0; 
+         current = current->next_ )
+   {
+      for ( BucketIndex index=0; index < ValueInternalLink::itemPerLink; ++index )
+      {
+         if ( current->items_[index].isItemAvailable() )
+            return 0;
+         if ( strcmp( key, current->keys_[index] ) == 0 )
+            return &current->items_[index];
+      }
+   }
+   return 0;
+}
+
+
+Value *
+ValueInternalMap::find( const char *key )
+{
+   const ValueInternalMap *constThis = this;
+   return const_cast<Value *>( constThis->find( key ) );
+}
+
+
+Value &
+ValueInternalMap::resolveReference( const char *key,
+                                    bool isStatic )
+{
+   HashKey hashedKey = hash( key );
+   if ( bucketsSize_ )
+   {
+      BucketIndex bucketIndex = hashedKey % bucketsSize_;
+      ValueInternalLink **previous = 0;
+      BucketIndex index;
+      for ( ValueInternalLink *current = &buckets_[bucketIndex]; 
+            current != 0; 
+            previous = &current->next_, current = current->next_ )
+      {
+         for ( index=0; index < ValueInternalLink::itemPerLink; ++index )
+         {
+            if ( current->items_[index].isItemAvailable() )
+               return setNewItem( key, isStatic, current, index );
+            if ( strcmp( key, current->keys_[index] ) == 0 )
+               return current->items_[index];
+         }
+      }
+   }
+
+   reserveDelta( 1 );
+   return unsafeAdd( key, isStatic, hashedKey );
+}
+
+
+void 
+ValueInternalMap::remove( const char *key )
+{
+   HashKey hashedKey = hash( key );
+   if ( !bucketsSize_ )
+      return;
+   BucketIndex bucketIndex = hashedKey % bucketsSize_;
+   for ( ValueInternalLink *link = &buckets_[bucketIndex]; 
+         link != 0; 
+         link = link->next_ )
+   {
+      BucketIndex index;
+      for ( index =0; index < ValueInternalLink::itemPerLink; ++index )
+      {
+         if ( link->items_[index].isItemAvailable() )
+            return;
+         if ( strcmp( key, link->keys_[index] ) == 0 )
+         {
+            doActualRemove( link, index, bucketIndex );
+            return;
+         }
+      }
+   }
+}
+
+void 
+ValueInternalMap::doActualRemove( ValueInternalLink *link, 
+                                  BucketIndex index,
+                                  BucketIndex bucketIndex )
+{
+   // find last item of the bucket and swap it with the 'removed' one.
+   // set removed items flags to 'available'.
+   // if last page only contains 'available' items, then desallocate it (it's empty)
+   ValueInternalLink *&lastLink = getLastLinkInBucket( index );
+   BucketIndex lastItemIndex = 1; // a link can never be empty, so start at 1
+   for ( ;   
+         lastItemIndex < ValueInternalLink::itemPerLink; 
+         ++lastItemIndex ) // may be optimized with dicotomic search
+   {
+      if ( lastLink->items_[lastItemIndex].isItemAvailable() )
+         break;
+   }
+   
+   BucketIndex lastUsedIndex = lastItemIndex - 1;
+   Value *valueToDelete = &link->items_[index];
+   Value *valueToPreserve = &lastLink->items_[lastUsedIndex];
+   if ( valueToDelete != valueToPreserve )
+      valueToDelete->swap( *valueToPreserve );
+   if ( lastUsedIndex == 0 )  // page is now empty
+   {  // remove it from bucket linked list and delete it.
+      ValueInternalLink *linkPreviousToLast = lastLink->previous_;
+      if ( linkPreviousToLast != 0 )   // can not deleted bucket link.
+      {
+         mapAllocator()->releaseMapLink( lastLink );
+         linkPreviousToLast->next_ = 0;
+         lastLink = linkPreviousToLast;
+      }
+   }
+   else
+   {
+      Value dummy;
+      valueToPreserve->swap( dummy ); // restore deleted to default Value.
+      valueToPreserve->setItemUsed( false );
+   }
+   --itemCount_;
+}
+
+
+ValueInternalLink *&
+ValueInternalMap::getLastLinkInBucket( BucketIndex bucketIndex )
+{
+   if ( bucketIndex == bucketsSize_ - 1 )
+      return tailLink_;
+   ValueInternalLink *&previous = buckets_[bucketIndex+1].previous_;
+   if ( !previous )
+      previous = &buckets_[bucketIndex];
+   return previous;
+}
+
+
+Value &
+ValueInternalMap::setNewItem( const char *key, 
+                              bool isStatic,
+                              ValueInternalLink *link, 
+                              BucketIndex index )
+{
+   char *duplicatedKey = valueAllocator()->makeMemberName( key );
+   ++itemCount_;
+   link->keys_[index] = duplicatedKey;
+   link->items_[index].setItemUsed();
+   link->items_[index].setMemberNameIsStatic( isStatic );
+   return link->items_[index]; // items already default constructed.
+}
+
+
+Value &
+ValueInternalMap::unsafeAdd( const char *key, 
+                             bool isStatic, 
+                             HashKey hashedKey )
+{
+   JSON_ASSERT_MESSAGE( bucketsSize_ > 0, "ValueInternalMap::unsafeAdd(): internal logic error." );
+   BucketIndex bucketIndex = hashedKey % bucketsSize_;
+   ValueInternalLink *&previousLink = getLastLinkInBucket( bucketIndex );
+   ValueInternalLink *link = previousLink;
+   BucketIndex index;
+   for ( index =0; index < ValueInternalLink::itemPerLink; ++index )
+   {
+      if ( link->items_[index].isItemAvailable() )
+         break;
+   }
+   if ( index == ValueInternalLink::itemPerLink ) // need to add a new page
+   {
+      ValueInternalLink *newLink = mapAllocator()->allocateMapLink();
+      index = 0;
+      link->next_ = newLink;
+      previousLink = newLink;
+      link = newLink;
+   }
+   return setNewItem( key, isStatic, link, index );
+}
+
+
+ValueInternalMap::HashKey 
+ValueInternalMap::hash( const char *key ) const
+{
+   HashKey hash = 0;
+   while ( *key )
+      hash += *key++ * 37;
+   return hash;
+}
+
+
+int 
+ValueInternalMap::compare( const ValueInternalMap &other ) const
+{
+   int sizeDiff( itemCount_ - other.itemCount_ );
+   if ( sizeDiff != 0 )
+      return sizeDiff;
+   // Strict order guaranty is required. Compare all keys FIRST, then compare values.
+   IteratorState it;
+   IteratorState itEnd;
+   makeBeginIterator( it );
+   makeEndIterator( itEnd );
+   for ( ; !equals(it,itEnd); increment(it) )
+   {
+      if ( !other.find( key( it ) ) )
+         return 1;
+   }
+
+   // All keys are equals, let's compare values
+   makeBeginIterator( it );
+   for ( ; !equals(it,itEnd); increment(it) )
+   {
+      const Value *otherValue = other.find( key( it ) );
+      int valueDiff = value(it).compare( *otherValue );
+      if ( valueDiff != 0 )
+         return valueDiff;
+   }
+   return 0;
+}
+
+
+void 
+ValueInternalMap::makeBeginIterator( IteratorState &it ) const
+{
+   it.map_ = const_cast<ValueInternalMap *>( this );
+   it.bucketIndex_ = 0;
+   it.itemIndex_ = 0;
+   it.link_ = buckets_;
+}
+
+
+void 
+ValueInternalMap::makeEndIterator( IteratorState &it ) const
+{
+   it.map_ = const_cast<ValueInternalMap *>( this );
+   it.bucketIndex_ = bucketsSize_;
+   it.itemIndex_ = 0;
+   it.link_ = 0;
+}
+
+
+bool 
+ValueInternalMap::equals( const IteratorState &x, const IteratorState &other )
+{
+   return x.map_ == other.map_  
+          &&  x.bucketIndex_ == other.bucketIndex_  
+          &&  x.link_ == other.link_
+          &&  x.itemIndex_ == other.itemIndex_;
+}
+
+
+void 
+ValueInternalMap::incrementBucket( IteratorState &iterator )
+{
+   ++iterator.bucketIndex_;
+   JSON_ASSERT_MESSAGE( iterator.bucketIndex_ <= iterator.map_->bucketsSize_,
+      "ValueInternalMap::increment(): attempting to iterate beyond end." );
+   if ( iterator.bucketIndex_ == iterator.map_->bucketsSize_ )
+      iterator.link_ = 0;
+   else
+      iterator.link_ = &(iterator.map_->buckets_[iterator.bucketIndex_]);
+   iterator.itemIndex_ = 0;
+}
+
+
+void 
+ValueInternalMap::increment( IteratorState &iterator )
+{
+   JSON_ASSERT_MESSAGE( iterator.map_, "Attempting to iterator using invalid iterator." );
+   ++iterator.itemIndex_;
+   if ( iterator.itemIndex_ == ValueInternalLink::itemPerLink )
+   {
+      JSON_ASSERT_MESSAGE( iterator.link_ != 0,
+         "ValueInternalMap::increment(): attempting to iterate beyond end." );
+      iterator.link_ = iterator.link_->next_;
+      if ( iterator.link_ == 0 )
+         incrementBucket( iterator );
+   }
+   else if ( iterator.link_->items_[iterator.itemIndex_].isItemAvailable() )
+   {
+      incrementBucket( iterator );
+   }
+}
+
+
+void 
+ValueInternalMap::decrement( IteratorState &iterator )
+{
+   if ( iterator.itemIndex_ == 0 )
+   {
+      JSON_ASSERT_MESSAGE( iterator.map_, "Attempting to iterate using invalid iterator." );
+      if ( iterator.link_ == &iterator.map_->buckets_[iterator.bucketIndex_] )
+      {
+         JSON_ASSERT_MESSAGE( iterator.bucketIndex_ > 0, "Attempting to iterate beyond beginning." );
+         --(iterator.bucketIndex_);
+      }
+      iterator.link_ = iterator.link_->previous_;
+      iterator.itemIndex_ = ValueInternalLink::itemPerLink - 1;
+   }
+}
+
+
+const char *
+ValueInternalMap::key( const IteratorState &iterator )
+{
+   JSON_ASSERT_MESSAGE( iterator.link_, "Attempting to iterate using invalid iterator." );
+   return iterator.link_->keys_[iterator.itemIndex_];
+}
+
+const char *
+ValueInternalMap::key( const IteratorState &iterator, bool &isStatic )
+{
+   JSON_ASSERT_MESSAGE( iterator.link_, "Attempting to iterate using invalid iterator." );
+   isStatic = iterator.link_->items_[iterator.itemIndex_].isMemberNameStatic();
+   return iterator.link_->keys_[iterator.itemIndex_];
+}
+
+
+Value &
+ValueInternalMap::value( const IteratorState &iterator )
+{
+   JSON_ASSERT_MESSAGE( iterator.link_, "Attempting to iterate using invalid iterator." );
+   return iterator.link_->items_[iterator.itemIndex_];
+}
+
+
+int 
+ValueInternalMap::distance( const IteratorState &x, const IteratorState &y )
+{
+   int offset = 0;
+   IteratorState it = x;
+   while ( !equals( it, y ) )
+      increment( it );
+   return offset;
+}
 
=== added file 'plugin/json_server/json/json_reader.cpp'
--- plugin/json_server/json/json_reader.cpp	1970-01-01 00:00:00 +0000
+++ plugin/json_server/json/json_reader.cpp	2011-05-04 01:52:37 +0000
@@ -0,0 +1,921 @@
+/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ * 
+ *  JSON Library, originally from http://jsoncpp.sourceforge.net/
+ *
+ *  Copyright (C) 2011 Stewart Smith
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are
+ *  met:
+ *
+ *      * Redistributions of source code must retain the above copyright
+ *  notice, this list of conditions and the following disclaimer.
+ *
+ *      * Redistributions in binary form must reproduce the above
+ *  copyright notice, this list of conditions and the following disclaimer
+ *  in the documentation and/or other materials provided with the
+ *  distribution.
+ *
+ *      * The names of its contributors may not be used to endorse or
+ *  promote products derived from this software without specific prior
+ *  written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <config.h>
+
+#include <plugin/json_server/json/reader.h>
+#include <plugin/json_server/json/value.h>
+
+#include <cassert>
+#include <cstdio>
+#include <cstring>
+#include <iostream>
+#include <stdexcept>
+#include <utility>
+
+namespace Json {
+
+// Implementation of class Features
+// ////////////////////////////////
+
+Features::Features()
+   : allowComments_( true )
+   , strictRoot_( false )
+{
+}
+
+
+Features 
+Features::all()
+{
+   return Features();
+}
+
+
+Features 
+Features::strictMode()
+{
+   Features features;
+   features.allowComments_ = false;
+   features.strictRoot_ = true;
+   return features;
+}
+
+// Implementation of class Reader
+// ////////////////////////////////
+
+
+static inline bool 
+in( Reader::Char c, Reader::Char c1, Reader::Char c2, Reader::Char c3, Reader::Char c4 )
+{
+   return c == c1  ||  c == c2  ||  c == c3  ||  c == c4;
+}
+
+static inline bool 
+in( Reader::Char c, Reader::Char c1, Reader::Char c2, Reader::Char c3, Reader::Char c4, Reader::Char c5 )
+{
+   return c == c1  ||  c == c2  ||  c == c3  ||  c == c4  ||  c == c5;
+}
+
+
+static bool 
+containsNewLine( Reader::Location begin, 
+                 Reader::Location end )
+{
+   for ( ;begin < end; ++begin )
+      if ( *begin == '\n'  ||  *begin == '\r' )
+         return true;
+   return false;
+}
+
+static std::string codePointToUTF8(unsigned int cp)
+{
+   std::string result;
+   
+   // based on description from http://en.wikipedia.org/wiki/UTF-8
+
+   if (cp <= 0x7f) 
+   {
+      result.resize(1);
+      result[0] = static_cast<char>(cp);
+   } 
+   else if (cp <= 0x7FF) 
+   {
+      result.resize(2);
+      result[1] = static_cast<char>(0x80 | (0x3f & cp));
+      result[0] = static_cast<char>(0xC0 | (0x1f & (cp >> 6)));
+   } 
+   else if (cp <= 0xFFFF) 
+   {
+      result.resize(3);
+      result[2] = static_cast<char>(0x80 | (0x3f & cp));
+      result[1] = 0x80 | static_cast<char>((0x3f & (cp >> 6)));
+      result[0] = 0xE0 | static_cast<char>((0xf & (cp >> 12)));
+   }
+   else if (cp <= 0x10FFFF) 
+   {
+      result.resize(4);
+      result[3] = static_cast<char>(0x80 | (0x3f & cp));
+      result[2] = static_cast<char>(0x80 | (0x3f & (cp >> 6)));
+      result[1] = static_cast<char>(0x80 | (0x3f & (cp >> 12)));
+      result[0] = static_cast<char>(0xF0 | (0x7 & (cp >> 18)));
+   }
+
+   return result;
+}
+
+
+// Class Reader
+// //////////////////////////////////////////////////////////////////
+
+Reader::Reader()
+   : features_( Features::all() )
+{
+}
+
+
+Reader::Reader( const Features &features )
+   : features_( features )
+{
+}
+
+
+bool
+Reader::parse( const std::string &document, 
+               Value &root,
+               bool collectComments )
+{
+   document_ = document;
+   const char *begin = document_.c_str();
+   const char *end = begin + document_.length();
+   return parse( begin, end, root, collectComments );
+}
+
+
+bool
+Reader::parse( std::istream& sin,
+               Value &root,
+               bool collectComments )
+{
+   //std::istream_iterator<char> begin(sin);
+   //std::istream_iterator<char> end;
+   // Those would allow streamed input from a file, if parse() were a
+   // template function.
+
+   // Since std::string is reference-counted, this at least does not
+   // create an extra copy.
+   std::string doc;
+   std::getline(sin, doc, (char)EOF);
+   return parse( doc, root, collectComments );
+}
+
+bool 
+Reader::parse( const char *beginDoc, const char *endDoc, 
+               Value &root,
+               bool collectComments )
+{
+   if ( !features_.allowComments_ )
+   {
+      collectComments = false;
+   }
+
+   begin_ = beginDoc;
+   end_ = endDoc;
+   collectComments_ = collectComments;
+   current_ = begin_;
+   lastValueEnd_ = 0;
+   lastValue_ = 0;
+   commentsBefore_ = "";
+   errors_.clear();
+   while ( !nodes_.empty() )
+      nodes_.pop();
+   nodes_.push( &root );
+   
+   bool successful = readValue();
+   Token token;
+   skipCommentTokens( token );
+   if ( collectComments_  &&  !commentsBefore_.empty() )
+      root.setComment( commentsBefore_, commentAfter );
+   if ( features_.strictRoot_ )
+   {
+      if ( !root.isArray()  &&  !root.isObject() )
+      {
+         // Set error location to start of doc, ideally should be first token found in doc
+         token.type_ = tokenError;
+         token.start_ = beginDoc;
+         token.end_ = endDoc;
+         addError( "A valid JSON document must be either an array or an object value.",
+                   token );
+         return false;
+      }
+   }
+   return successful;
+}
+
+
+bool
+Reader::readValue()
+{
+   Token token;
+   skipCommentTokens( token );
+   bool successful = true;
+
+   if ( collectComments_  &&  !commentsBefore_.empty() )
+   {
+      currentValue().setComment( commentsBefore_, commentBefore );
+      commentsBefore_ = "";
+   }
+
+
+   switch ( token.type_ )
+   {
+   case tokenObjectBegin:
+      successful = readObject( token );
+      break;
+   case tokenArrayBegin:
+      successful = readArray( token );
+      break;
+   case tokenNumber:
+      successful = decodeNumber( token );
+      break;
+   case tokenString:
+      successful = decodeString( token );
+      break;
+   case tokenTrue:
+      currentValue() = true;
+      break;
+   case tokenFalse:
+      currentValue() = false;
+      break;
+   case tokenNull:
+      currentValue() = Value();
+      break;
+   default:
+      return addError( "Syntax error: value, object or array expected.", token );
+   }
+
+   if ( collectComments_ )
+   {
+      lastValueEnd_ = current_;
+      lastValue_ = &currentValue();
+   }
+
+   return successful;
+}
+
+
+void 
+Reader::skipCommentTokens( Token &token )
+{
+   if ( features_.allowComments_ )
+   {
+      do
+      {
+         readToken( token );
+      }
+      while ( token.type_ == tokenComment );
+   }
+   else
+   {
+      readToken( token );
+   }
+}
+
+
+bool 
+Reader::expectToken( TokenType type, Token &token, const char *message )
+{
+   readToken( token );
+   if ( token.type_ != type )
+      return addError( message, token );
+   return true;
+}
+
+
+bool 
+Reader::readToken( Token &token )
+{
+   skipSpaces();
+   token.start_ = current_;
+   Char c = getNextChar();
+   bool ok = true;
+   switch ( c )
+   {
+   case '{':
+      token.type_ = tokenObjectBegin;
+      break;
+   case '}':
+      token.type_ = tokenObjectEnd;
+      break;
+   case '[':
+      token.type_ = tokenArrayBegin;
+      break;
+   case ']':
+      token.type_ = tokenArrayEnd;
+      break;
+   case '"':
+      token.type_ = tokenString;
+      ok = readString();
+      break;
+   case '/':
+      token.type_ = tokenComment;
+      ok = readComment();
+      break;
+   case '0':
+   case '1':
+   case '2':
+   case '3':
+   case '4':
+   case '5':
+   case '6':
+   case '7':
+   case '8':
+   case '9':
+   case '-':
+      token.type_ = tokenNumber;
+      readNumber();
+      break;
+   case 't':
+      token.type_ = tokenTrue;
+      ok = match( "rue", 3 );
+      break;
+   case 'f':
+      token.type_ = tokenFalse;
+      ok = match( "alse", 4 );
+      break;
+   case 'n':
+      token.type_ = tokenNull;
+      ok = match( "ull", 3 );
+      break;
+   case ',':
+      token.type_ = tokenArraySeparator;
+      break;
+   case ':':
+      token.type_ = tokenMemberSeparator;
+      break;
+   case 0:
+      token.type_ = tokenEndOfStream;
+      break;
+   default:
+      ok = false;
+      break;
+   }
+   if ( !ok )
+      token.type_ = tokenError;
+   token.end_ = current_;
+   return true;
+}
+
+
+void 
+Reader::skipSpaces()
+{
+   while ( current_ != end_ )
+   {
+      Char c = *current_;
+      if ( c == ' '  ||  c == '\t'  ||  c == '\r'  ||  c == '\n' )
+         ++current_;
+      else
+         break;
+   }
+}
+
+
+bool 
+Reader::match( Location pattern, 
+               int patternLength )
+{
+   if ( end_ - current_ < patternLength )
+      return false;
+   int index = patternLength;
+   while ( index-- )
+      if ( current_[index] != pattern[index] )
+         return false;
+   current_ += patternLength;
+   return true;
+}
+
+
+bool
+Reader::readComment()
+{
+   Location commentBegin = current_ - 1;
+   Char c = getNextChar();
+   bool successful = false;
+   if ( c == '*' )
+      successful = readCStyleComment();
+   else if ( c == '/' )
+      successful = readCppStyleComment();
+   if ( !successful )
+      return false;
+
+   if ( collectComments_ )
+   {
+      CommentPlacement placement = commentBefore;
+      if ( lastValueEnd_  &&  !containsNewLine( lastValueEnd_, commentBegin ) )
+      {
+         if ( c != '*'  ||  !containsNewLine( commentBegin, current_ ) )
+            placement = commentAfterOnSameLine;
+      }
+
+      addComment( commentBegin, current_, placement );
+   }
+   return true;
+}
+
+
+void 
+Reader::addComment( Location begin, 
+                    Location end, 
+                    CommentPlacement placement )
+{
+   assert( collectComments_ );
+   if ( placement == commentAfterOnSameLine )
+   {
+      assert( lastValue_ != 0 );
+      lastValue_->setComment( std::string( begin, end ), placement );
+   }
+   else
+   {
+      if ( !commentsBefore_.empty() )
+         commentsBefore_ += "\n";
+      commentsBefore_ += std::string( begin, end );
+   }
+}
+
+
+bool 
+Reader::readCStyleComment()
+{
+   while ( current_ != end_ )
+   {
+      Char c = getNextChar();
+      if ( c == '*'  &&  *current_ == '/' )
+         break;
+   }
+   return getNextChar() == '/';
+}
+
+
+bool 
+Reader::readCppStyleComment()
+{
+   while ( current_ != end_ )
+   {
+      Char c = getNextChar();
+      if (  c == '\r'  ||  c == '\n' )
+         break;
+   }
+   return true;
+}
+
+
+void 
+Reader::readNumber()
+{
+   while ( current_ != end_ )
+   {
+      if ( !(*current_ >= '0'  &&  *current_ <= '9')  &&
+           !in( *current_, '.', 'e', 'E', '+', '-' ) )
+         break;
+      ++current_;
+   }
+}
+
+bool
+Reader::readString()
+{
+   Char c = 0;
+   while ( current_ != end_ )
+   {
+      c = getNextChar();
+      if ( c == '\\' )
+         getNextChar();
+      else if ( c == '"' )
+         break;
+   }
+   return c == '"';
+}
+
+
+bool 
+Reader::readObject( Token & )
+{
+   Token tokenName;
+   std::string name;
+   currentValue() = Value( objectValue );
+   while ( readToken( tokenName ) )
+   {
+      bool initialTokenOk = true;
+      while ( tokenName.type_ == tokenComment  &&  initialTokenOk )
+         initialTokenOk = readToken( tokenName );
+      if  ( !initialTokenOk )
+         break;
+      if ( tokenName.type_ == tokenObjectEnd  &&  name.empty() )  // empty object
+         return true;
+      if ( tokenName.type_ != tokenString )
+         break;
+      
+      name = "";
+      if ( !decodeString( tokenName, name ) )
+         return recoverFromError( tokenObjectEnd );
+
+      Token colon;
+      if ( !readToken( colon ) ||  colon.type_ != tokenMemberSeparator )
+      {
+         return addErrorAndRecover( "Missing ':' after object member name", 
+                                    colon, 
+                                    tokenObjectEnd );
+      }
+      Value &value = currentValue()[ name ];
+      nodes_.push( &value );
+      bool ok = readValue();
+      nodes_.pop();
+      if ( !ok ) // error already set
+         return recoverFromError( tokenObjectEnd );
+
+      Token comma;
+      if ( !readToken( comma )
+            ||  ( comma.type_ != tokenObjectEnd  &&  
+                  comma.type_ != tokenArraySeparator &&
+		  comma.type_ != tokenComment ) )
+      {
+         return addErrorAndRecover( "Missing ',' or '}' in object declaration", 
+                                    comma, 
+                                    tokenObjectEnd );
+      }
+      bool finalizeTokenOk = true;
+      while ( comma.type_ == tokenComment &&
+              finalizeTokenOk )
+         finalizeTokenOk = readToken( comma );
+      if ( comma.type_ == tokenObjectEnd )
+         return true;
+   }
+   return addErrorAndRecover( "Missing '}' or object member name", 
+                              tokenName, 
+                              tokenObjectEnd );
+}
+
+
+bool 
+Reader::readArray( Token & )
+{
+   currentValue() = Value( arrayValue );
+   skipSpaces();
+   if ( *current_ == ']' ) // empty array
+   {
+      Token endArray;
+      readToken( endArray );
+      return true;
+   }
+   int index = 0;
+   while ( true )
+   {
+      Value &value = currentValue()[ index++ ];
+      nodes_.push( &value );
+      bool ok = readValue();
+      nodes_.pop();
+      if ( !ok ) // error already set
+         return recoverFromError( tokenArrayEnd );
+
+      Token token;
+      // Accept Comment after last item in the array.
+      ok = readToken( token );
+      while ( token.type_ == tokenComment  &&  ok )
+      {
+         ok = readToken( token );
+      }
+      bool badTokenType = ( token.type_ == tokenArraySeparator  &&  
+                            token.type_ == tokenArrayEnd );
+      if ( !ok  ||  badTokenType )
+      {
+         return addErrorAndRecover( "Missing ',' or ']' in array declaration", 
+                                    token, 
+                                    tokenArrayEnd );
+      }
+      if ( token.type_ == tokenArrayEnd )
+         break;
+   }
+   return true;
+}
+
+
+bool 
+Reader::decodeNumber( Token &token )
+{
+   bool isDouble = false;
+   for ( Location inspect = token.start_; inspect != token.end_; ++inspect )
+   {
+      isDouble = isDouble  
+                 ||  in( *inspect, '.', 'e', 'E', '+' )  
+                 ||  ( *inspect == '-'  &&  inspect != token.start_ );
+   }
+   if ( isDouble )
+      return decodeDouble( token );
+   Location current = token.start_;
+   bool isNegative = *current == '-';
+   if ( isNegative )
+      ++current;
+   Value::UInt threshold = (isNegative ? Value::UInt(-Value::minInt) 
+                                       : Value::maxUInt) / 10;
+   Value::UInt value = 0;
+   while ( current < token.end_ )
+   {
+      Char c = *current++;
+      if ( c < '0'  ||  c > '9' )
+         return addError( "'" + std::string( token.start_, token.end_ ) + "' is not a number.", token );
+      if ( value >= threshold )
+         return decodeDouble( token );
+      value = value * 10 + Value::UInt(c - '0');
+   }
+   if ( isNegative )
+      currentValue() = -Value::Int( value );
+   else if ( value <= Value::UInt(Value::maxInt) )
+      currentValue() = Value::Int( value );
+   else
+      currentValue() = value;
+   return true;
+}
+
+
+bool 
+Reader::decodeDouble( Token &token )
+{
+   double value = 0;
+   const int bufferSize = 32;
+   int count;
+   int length = int(token.end_ - token.start_);
+   if ( length <= bufferSize )
+   {
+      Char buffer[bufferSize];
+      memcpy( buffer, token.start_, length );
+      buffer[length] = 0;
+      count = sscanf( buffer, "%lf", &value );
+   }
+   else
+   {
+      std::string buffer( token.start_, token.end_ );
+      count = sscanf( buffer.c_str(), "%lf", &value );
+   }
+
+   if ( count != 1 )
+      return addError( "'" + std::string( token.start_, token.end_ ) + "' is not a number.", token );
+   currentValue() = value;
+   return true;
+}
+
+
+bool 
+Reader::decodeString( Token &token )
+{
+   std::string decoded;
+   if ( !decodeString( token, decoded ) )
+      return false;
+   currentValue() = decoded;
+   return true;
+}
+
+
+bool 
+Reader::decodeString( Token &token, std::string &decoded )
+{
+   decoded.reserve( token.end_ - token.start_ - 2 );
+   Location current = token.start_ + 1; // skip '"'
+   Location end = token.end_ - 1;      // do not include '"'
+   while ( current != end )
+   {
+      Char c = *current++;
+      if ( c == '"' )
+         break;
+      else if ( c == '\\' )
+      {
+         if ( current == end )
+            return addError( "Empty escape sequence in string", token, current );
+         Char escape = *current++;
+         switch ( escape )
+         {
+         case '"': decoded += '"'; break;
+         case '/': decoded += '/'; break;
+         case '\\': decoded += '\\'; break;
+         case 'b': decoded += '\b'; break;
+         case 'f': decoded += '\f'; break;
+         case 'n': decoded += '\n'; break;
+         case 'r': decoded += '\r'; break;
+         case 't': decoded += '\t'; break;
+         case 'u':
+            {
+               unsigned int unicode;
+               if ( !decodeUnicodeCodePoint( token, current, end, unicode ) )
+                  return false;
+               decoded += codePointToUTF8(unicode);
+            }
+            break;
+         default:
+            return addError( "Bad escape sequence in string", token, current );
+         }
+      }
+      else
+      {
+         decoded += c;
+      }
+   }
+   return true;
+}
+
+bool
+Reader::decodeUnicodeCodePoint( Token &token, 
+                                     Location &current, 
+                                     Location end, 
+                                     unsigned int &unicode )
+{
+
+   if ( !decodeUnicodeEscapeSequence( token, current, end, unicode ) )
+      return false;
+   if (unicode >= 0xD800 && unicode <= 0xDBFF)
+   {
+      // surrogate pairs
+      if (end - current < 6)
+         return addError( "additional six characters expected to parse unicode surrogate pair.", token, current );
+      unsigned int surrogatePair;
+      if (*(current++) == '\\' && *(current++)== 'u')
+      {
+         if (decodeUnicodeEscapeSequence( token, current, end, surrogatePair ))
+         {
+            unicode = 0x10000 + ((unicode & 0x3FF) << 10) + (surrogatePair & 0x3FF);
+         } 
+         else
+            return false;
+      } 
+      else
+         return addError( "expecting another \\u token to begin the second half of a unicode surrogate pair", token, current );
+   }
+   return true;
+}
+
+bool 
+Reader::decodeUnicodeEscapeSequence( Token &token, 
+                                     Location &current, 
+                                     Location end, 
+                                     unsigned int &unicode )
+{
+   if ( end - current < 4 )
+      return addError( "Bad unicode escape sequence in string: four digits expected.", token, current );
+   unicode = 0;
+   for ( int index =0; index < 4; ++index )
+   {
+      Char c = *current++;
+      unicode *= 16;
+      if ( c >= '0'  &&  c <= '9' )
+         unicode += c - '0';
+      else if ( c >= 'a'  &&  c <= 'f' )
+         unicode += c - 'a' + 10;
+      else if ( c >= 'A'  &&  c <= 'F' )
+         unicode += c - 'A' + 10;
+      else
+         return addError( "Bad unicode escape sequence in string: hexadecimal digit expected.", token, current );
+   }
+   return true;
+}
+
+
+bool 
+Reader::addError( const std::string &message, 
+                  Token &token,
+                  Location extra )
+{
+   ErrorInfo info;
+   info.token_ = token;
+   info.message_ = message;
+   info.extra_ = extra;
+   errors_.push_back( info );
+   return false;
+}
+
+
+bool 
+Reader::recoverFromError( TokenType skipUntilToken )
+{
+   int errorCount = int(errors_.size());
+   Token skip;
+   while ( true )
+   {
+      if ( !readToken(skip) )
+         errors_.resize( errorCount ); // discard errors caused by recovery
+      if ( skip.type_ == skipUntilToken  ||  skip.type_ == tokenEndOfStream )
+         break;
+   }
+   errors_.resize( errorCount );
+   return false;
+}
+
+
+bool 
+Reader::addErrorAndRecover( const std::string &message, 
+                            Token &token,
+                            TokenType skipUntilToken )
+{
+   addError( message, token );
+   return recoverFromError( skipUntilToken );
+}
+
+
+Value &
+Reader::currentValue()
+{
+   return *(nodes_.top());
+}
+
+
+Reader::Char 
+Reader::getNextChar()
+{
+   if ( current_ == end_ )
+      return 0;
+   return *current_++;
+}
+
+
+void 
+Reader::getLocationLineAndColumn( Location location,
+                                  int &line,
+                                  int &column ) const
+{
+   Location current = begin_;
+   Location lastLineStart = current;
+   line = 0;
+   while ( current < location  &&  current != end_ )
+   {
+      Char c = *current++;
+      if ( c == '\r' )
+      {
+         if ( *current == '\n' )
+            ++current;
+         lastLineStart = current;
+         ++line;
+      }
+      else if ( c == '\n' )
+      {
+         lastLineStart = current;
+         ++line;
+      }
+   }
+   // column & line start at 1
+   column = int(location - lastLineStart) + 1;
+   ++line;
+}
+
+
+std::string
+Reader::getLocationLineAndColumn( Location location ) const
+{
+   int line, column;
+   getLocationLineAndColumn( location, line, column );
+   char buffer[18+16+16+1];
+   sprintf( buffer, "Line %d, Column %d", line, column );
+   return buffer;
+}
+
+
+std::string 
+Reader::getFormatedErrorMessages() const
+{
+   std::string formattedMessage;
+   for ( Errors::const_iterator itError = errors_.begin();
+         itError != errors_.end();
+         ++itError )
+   {
+      const ErrorInfo &error = *itError;
+      formattedMessage += "* " + getLocationLineAndColumn( error.token_.start_ ) + "\n";
+      formattedMessage += "  " + error.message_ + "\n";
+      if ( error.extra_ )
+         formattedMessage += "See " + getLocationLineAndColumn( error.extra_ ) + " for detail.\n";
+   }
+   return formattedMessage;
+}
+
+
+std::istream& operator>>( std::istream &sin, Value &root )
+{
+    Json::Reader reader;
+    bool ok = reader.parse(sin, root, true);
+    //JSON_ASSERT( ok );
+    if (!ok) throw std::runtime_error(reader.getFormatedErrorMessages());
+    return sin;
+}
+
+
+} // namespace Json
 
=== added file 'plugin/json_server/json/json_value.cpp'
--- plugin/json_server/json/json_value.cpp	1970-01-01 00:00:00 +0000
+++ plugin/json_server/json/json_value.cpp	2011-05-04 01:52:37 +0000
@@ -0,0 +1,1759 @@
+/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ * 
+ *  JSON Library, originally from http://jsoncpp.sourceforge.net/
+ *
+ *  Copyright (C) 2011 Stewart Smith
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are
+ *  met:
+ *
+ *      * Redistributions of source code must retain the above copyright
+ *  notice, this list of conditions and the following disclaimer.
+ *
+ *      * Redistributions in binary form must reproduce the above
+ *  copyright notice, this list of conditions and the following disclaimer
+ *  in the documentation and/or other materials provided with the
+ *  distribution.
+ *
+ *      * The names of its contributors may not be used to endorse or
+ *  promote products derived from this software without specific prior
+ *  written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <config.h>
+
+#include <plugin/json_server/json/value.h>
+#include <plugin/json_server/json/writer.h>
+
+#include <cassert>
+#include <cstring>
+#include <iostream>
+#include <stdexcept>
+#include <utility>
+
+#ifdef JSON_USE_CPPTL
+# include <cpptl/conststring.h>
+#endif
+#include <cstddef>    // size_t
+#ifndef JSON_USE_SIMPLE_INTERNAL_ALLOCATOR
+# include "json_batchallocator.h"
+#endif // #ifndef JSON_USE_SIMPLE_INTERNAL_ALLOCATOR
+
+#define JSON_ASSERT_UNREACHABLE assert( false )
+#define JSON_ASSERT( condition ) assert( condition );  // @todo <= change this into an exception throw
+#define JSON_ASSERT_MESSAGE( condition, message ) if (!( condition )) throw std::runtime_error( message );
+
+namespace Json {
+
+const Value Value::null;
+const Int Value::minInt = Int( ~(UInt(-1)/2) );
+const Int Value::maxInt = Int( UInt(-1)/2 );
+const UInt Value::maxUInt = UInt(-1);
+
+// A "safe" implementation of strdup. Allow null pointer to be passed. 
+// Also avoid warning on msvc80.
+//
+//inline char *safeStringDup( const char *czstring )
+//{
+//   if ( czstring )
+//   {
+//      const size_t length = (unsigned int)( strlen(czstring) + 1 );
+//      char *newString = static_cast<char *>( malloc( length ) );
+//      memcpy( newString, czstring, length );
+//      return newString;
+//   }
+//   return 0;
+//}
+//
+//inline char *safeStringDup( const std::string &str )
+//{
+//   if ( !str.empty() )
+//   {
+//      const size_t length = str.length();
+//      char *newString = static_cast<char *>( malloc( length + 1 ) );
+//      memcpy( newString, str.c_str(), length );
+//      newString[length] = 0;
+//      return newString;
+//   }
+//   return 0;
+//}
+
+ValueAllocator::~ValueAllocator()
+{
+}
+
+class DefaultValueAllocator : public ValueAllocator
+{
+public:
+   virtual ~DefaultValueAllocator()
+   {
+   }
+
+   virtual char *makeMemberName( const char *memberName )
+   {
+      return duplicateStringValue( memberName );
+   }
+
+   virtual void releaseMemberName( char *memberName )
+   {
+      releaseStringValue( memberName );
+   }
+
+   virtual char *duplicateStringValue( const char *value, 
+                                       unsigned int length = unknown )
+   {
+      //@todo invesgate this old optimization
+      //if ( !value  ||  value[0] == 0 )
+      //   return 0;
+
+      if ( length == unknown )
+         length = (unsigned int)strlen(value);
+      char *newString = static_cast<char *>( malloc( length + 1 ) );
+      memcpy( newString, value, length );
+      newString[length] = 0;
+      return newString;
+   }
+
+   virtual void releaseStringValue( char *value )
+   {
+      if ( value )
+         free( value );
+   }
+};
+
+static ValueAllocator *&valueAllocator()
+{
+   static DefaultValueAllocator defaultAllocator;
+   static ValueAllocator *valueAllocator = &defaultAllocator;
+   return valueAllocator;
+}
+
+static struct DummyValueAllocatorInitializer {
+   DummyValueAllocatorInitializer() 
+   {
+      valueAllocator();      // ensure valueAllocator() statics are initialized before main().
+   }
+} dummyValueAllocatorInitializer;
+
+
+
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// ValueInternals...
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+#ifdef JSON_VALUE_USE_INTERNAL_MAP
+# include "json_internalarray.inl"
+# include "json_internalmap.inl"
+#endif // JSON_VALUE_USE_INTERNAL_MAP
+
+# include "json_valueiterator.inl"
+
+
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// class Value::CommentInfo
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+
+
+Value::CommentInfo::CommentInfo()
+   : comment_( 0 )
+{
+}
+
+Value::CommentInfo::~CommentInfo()
+{
+   if ( comment_ )
+      valueAllocator()->releaseStringValue( comment_ );
+}
+
+
+void 
+Value::CommentInfo::setComment( const char *text )
+{
+   if ( comment_ )
+      valueAllocator()->releaseStringValue( comment_ );
+   JSON_ASSERT( text );
+   JSON_ASSERT_MESSAGE( text[0]=='\0' || text[0]=='/', "Comments must start with /");
+   // It seems that /**/ style comments are acceptable as well.
+   comment_ = valueAllocator()->duplicateStringValue( text );
+}
+
+
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// class Value::CZString
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+# ifndef JSON_VALUE_USE_INTERNAL_MAP
+
+// Notes: index_ indicates if the string was allocated when
+// a string is stored.
+
+Value::CZString::CZString( int index_arg )
+   : cstr_( 0 )
+   , index_( index_arg )
+{
+}
+
+Value::CZString::CZString( const char *cstr, DuplicationPolicy allocate )
+   : cstr_( allocate == duplicate ? valueAllocator()->makeMemberName(cstr) 
+                                  : cstr )
+   , index_( allocate )
+{
+}
+
+Value::CZString::CZString( const CZString &other )
+: cstr_( other.index_ != noDuplication &&  other.cstr_ != 0
+                ?  valueAllocator()->makeMemberName( other.cstr_ )
+                : other.cstr_ )
+   , index_( other.cstr_ ? (other.index_ == noDuplication ? noDuplication : duplicate)
+                         : other.index_ )
+{
+}
+
+Value::CZString::~CZString()
+{
+   if ( cstr_  &&  index_ == duplicate )
+      valueAllocator()->releaseMemberName( const_cast<char *>( cstr_ ) );
+}
+
+void 
+Value::CZString::swap( CZString &other )
+{
+   std::swap( cstr_, other.cstr_ );
+   std::swap( index_, other.index_ );
+}
+
+Value::CZString &
+Value::CZString::operator =( const CZString &other )
+{
+   CZString temp( other );
+   swap( temp );
+   return *this;
+}
+
+bool 
+Value::CZString::operator<( const CZString &other ) const 
+{
+   if ( cstr_ )
+      return strcmp( cstr_, other.cstr_ ) < 0;
+   return index_ < other.index_;
+}
+
+bool 
+Value::CZString::operator==( const CZString &other ) const 
+{
+   if ( cstr_ )
+      return strcmp( cstr_, other.cstr_ ) == 0;
+   return index_ == other.index_;
+}
+
+
+int 
+Value::CZString::index() const
+{
+   return index_;
+}
+
+
+const char *
+Value::CZString::c_str() const
+{
+   return cstr_;
+}
+
+bool 
+Value::CZString::isStaticString() const
+{
+   return index_ == noDuplication;
+}
+
+#endif // ifndef JSON_VALUE_USE_INTERNAL_MAP
+
+
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// class Value::Value
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+
+/*! \internal Default constructor initialization must be equivalent to:
+ * memset( this, 0, sizeof(Value) )
+ * This optimization is used in ValueInternalMap fast allocator.
+ */
+Value::Value( ValueType type_arg )
+   : type_( type_arg )
+   , allocated_( 0 )
+   , comments_( 0 )
+# ifdef JSON_VALUE_USE_INTERNAL_MAP
+   , itemIsUsed_( 0 )
+#endif
+{
+   switch ( type_arg )
+   {
+   case nullValue:
+      break;
+   case intValue:
+   case uintValue:
+      value_.int_ = 0;
+      break;
+   case realValue:
+      value_.real_ = 0.0;
+      break;
+   case stringValue:
+      value_.string_ = 0;
+      break;
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   case arrayValue:
+   case objectValue:
+      value_.map_ = new ObjectValues();
+      break;
+#else
+   case arrayValue:
+      value_.array_ = arrayAllocator()->newArray();
+      break;
+   case objectValue:
+      value_.map_ = mapAllocator()->newMap();
+      break;
+#endif
+   case booleanValue:
+      value_.bool_ = false;
+      break;
+   default:
+      JSON_ASSERT_UNREACHABLE;
+   }
+}
+
+
+Value::Value( Int value )
+   : type_( intValue )
+   , comments_( 0 )
+# ifdef JSON_VALUE_USE_INTERNAL_MAP
+   , itemIsUsed_( 0 )
+#endif
+{
+   value_.int_ = value;
+}
+
+
+Value::Value( UInt value )
+   : type_( uintValue )
+   , comments_( 0 )
+# ifdef JSON_VALUE_USE_INTERNAL_MAP
+   , itemIsUsed_( 0 )
+#endif
+{
+   value_.uint_ = value;
+}
+
+Value::Value( double value )
+   : type_( realValue )
+   , comments_( 0 )
+# ifdef JSON_VALUE_USE_INTERNAL_MAP
+   , itemIsUsed_( 0 )
+#endif
+{
+   value_.real_ = value;
+}
+
+Value::Value( const char *value )
+   : type_( stringValue )
+   , allocated_( true )
+   , comments_( NULL )
+# ifdef JSON_VALUE_USE_INTERNAL_MAP
+   , itemIsUsed_( 0 )
+#endif
+{
+   value_.string_ = valueAllocator()->duplicateStringValue( value );
+}
+
+
+Value::Value( const char *beginValue, 
+              const char *endValue )
+   : type_( stringValue )
+   , allocated_( true )
+   , comments_( NULL )
+# ifdef JSON_VALUE_USE_INTERNAL_MAP
+   , itemIsUsed_( 0 )
+#endif
+{
+   value_.string_ = valueAllocator()->duplicateStringValue( beginValue, 
+                                                            UInt(endValue - beginValue) );
+}
+
+
+Value::Value( const std::string &value )
+   : type_( stringValue )
+   , allocated_( true )
+   , comments_( 0 )
+# ifdef JSON_VALUE_USE_INTERNAL_MAP
+   , itemIsUsed_( 0 )
+#endif
+{
+   value_.string_ = valueAllocator()->duplicateStringValue( value.c_str(), 
+                                                            (unsigned int)value.length() );
+
+}
+
+Value::Value( const StaticString &value )
+   : type_( stringValue )
+   , allocated_( false )
+   , comments_( 0 )
+# ifdef JSON_VALUE_USE_INTERNAL_MAP
+   , itemIsUsed_( 0 )
+#endif
+{
+   value_.string_ = const_cast<char *>( value.c_str() );
+}
+
+
+# ifdef JSON_USE_CPPTL
+Value::Value( const CppTL::ConstString &value )
+   : type_( stringValue )
+   , allocated_( true )
+   , comments_( 0 )
+# ifdef JSON_VALUE_USE_INTERNAL_MAP
+   , itemIsUsed_( 0 )
+#endif
+{
+   value_.string_ = valueAllocator()->duplicateStringValue( value, value.length() );
+}
+# endif
+
+Value::Value( bool value )
+   : type_( booleanValue )
+   , comments_( 0 )
+# ifdef JSON_VALUE_USE_INTERNAL_MAP
+   , itemIsUsed_( 0 )
+#endif
+{
+   value_.bool_ = value;
+}
+
+
+Value::Value( const Value &other )
+   : type_( other.type_ )
+   , comments_( 0 )
+# ifdef JSON_VALUE_USE_INTERNAL_MAP
+   , itemIsUsed_( 0 )
+#endif
+{
+   switch ( type_ )
+   {
+   case nullValue:
+   case intValue:
+   case uintValue:
+   case realValue:
+   case booleanValue:
+      value_ = other.value_;
+      break;
+   case stringValue:
+      if ( other.value_.string_ )
+      {
+         value_.string_ = valueAllocator()->duplicateStringValue( other.value_.string_ );
+         allocated_ = true;
+      }
+      else
+         value_.string_ = 0;
+      break;
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   case arrayValue:
+   case objectValue:
+      value_.map_ = new ObjectValues( *other.value_.map_ );
+      break;
+#else
+   case arrayValue:
+      value_.array_ = arrayAllocator()->newArrayCopy( *other.value_.array_ );
+      break;
+   case objectValue:
+      value_.map_ = mapAllocator()->newMapCopy( *other.value_.map_ );
+      break;
+#endif
+   default:
+      JSON_ASSERT_UNREACHABLE;
+   }
+   if ( other.comments_ )
+   {
+      comments_ = new CommentInfo[numberOfCommentPlacement];
+      for ( int comment =0; comment < numberOfCommentPlacement; ++comment )
+      {
+         const CommentInfo &otherComment = other.comments_[comment];
+         if ( otherComment.comment_ )
+            comments_[comment].setComment( otherComment.comment_ );
+      }
+   }
+}
+
+
+Value::~Value()
+{
+   switch ( type_ )
+   {
+   case nullValue:
+   case intValue:
+   case uintValue:
+   case realValue:
+   case booleanValue:
+      break;
+   case stringValue:
+      if ( allocated_ )
+         valueAllocator()->releaseStringValue( value_.string_ );
+      break;
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   case arrayValue:
+   case objectValue:
+      delete value_.map_;
+      break;
+#else
+   case arrayValue:
+      arrayAllocator()->destructArray( value_.array_ );
+      break;
+   case objectValue:
+      mapAllocator()->destructMap( value_.map_ );
+      break;
+#endif
+   default:
+      JSON_ASSERT_UNREACHABLE;
+   }
+
+   if ( comments_ )
+      delete[] comments_;
+}
+
+Value &
+Value::operator=( const Value &other )
+{
+   Value temp( other );
+   swap( temp );
+   return *this;
+}
+
+void 
+Value::swap( Value &other )
+{
+   ValueType temp = type_;
+   type_ = other.type_;
+   other.type_ = temp;
+   std::swap( value_, other.value_ );
+   int temp2 = allocated_;
+   allocated_ = other.allocated_;
+   other.allocated_ = temp2;
+}
+
+ValueType 
+Value::type() const
+{
+   return type_;
+}
+
+
+int 
+Value::compare( const Value & )
+{
+   /*
+   int typeDelta = other.type_ - type_;
+   switch ( type_ )
+   {
+   case nullValue:
+
+      return other.type_ == type_;
+   case intValue:
+      if ( other.type_.isNumeric()
+   case uintValue:
+   case realValue:
+   case booleanValue:
+      break;
+   case stringValue,
+      break;
+   case arrayValue:
+      delete value_.array_;
+      break;
+   case objectValue:
+      delete value_.map_;
+   default:
+      JSON_ASSERT_UNREACHABLE;
+   }
+   */
+   return 0;  // unreachable
+}
+
+bool 
+Value::operator <( const Value &other ) const
+{
+   int typeDelta = type_ - other.type_;
+   if ( typeDelta )
+      return typeDelta < 0 ? true : false;
+   switch ( type_ )
+   {
+   case nullValue:
+      return false;
+   case intValue:
+      return value_.int_ < other.value_.int_;
+   case uintValue:
+      return value_.uint_ < other.value_.uint_;
+   case realValue:
+      return value_.real_ < other.value_.real_;
+   case booleanValue:
+      return value_.bool_ < other.value_.bool_;
+   case stringValue:
+      return ( value_.string_ == 0  &&  other.value_.string_ )
+             || ( other.value_.string_  
+                  &&  value_.string_  
+                  && strcmp( value_.string_, other.value_.string_ ) < 0 );
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   case arrayValue:
+   case objectValue:
+      {
+         int delta = int( value_.map_->size() - other.value_.map_->size() );
+         if ( delta )
+            return delta < 0;
+         return (*value_.map_) < (*other.value_.map_);
+      }
+#else
+   case arrayValue:
+      return value_.array_->compare( *(other.value_.array_) ) < 0;
+   case objectValue:
+      return value_.map_->compare( *(other.value_.map_) ) < 0;
+#endif
+   default:
+      JSON_ASSERT_UNREACHABLE;
+   }
+   return 0;  // unreachable
+}
+
+bool 
+Value::operator <=( const Value &other ) const
+{
+   return !(other > *this);
+}
+
+bool 
+Value::operator >=( const Value &other ) const
+{
+   return !(*this < other);
+}
+
+bool 
+Value::operator >( const Value &other ) const
+{
+   return other < *this;
+}
+
+bool 
+Value::operator ==( const Value &other ) const
+{
+   //if ( type_ != other.type_ )
+   // GCC 2.95.3 says:
+   // attempt to take address of bit-field structure member `Json::Value::type_'
+   // Beats me, but a temp solves the problem.
+   int temp = other.type_;
+   if ( type_ != temp )
+      return false;
+   switch ( type_ )
+   {
+   case nullValue:
+      return true;
+   case intValue:
+      return value_.int_ == other.value_.int_;
+   case uintValue:
+      return value_.uint_ == other.value_.uint_;
+   case realValue:
+      return value_.real_ == other.value_.real_;
+   case booleanValue:
+      return value_.bool_ == other.value_.bool_;
+   case stringValue:
+      return ( value_.string_ == other.value_.string_ )
+             || ( other.value_.string_  
+                  &&  value_.string_  
+                  && strcmp( value_.string_, other.value_.string_ ) == 0 );
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   case arrayValue:
+   case objectValue:
+      return value_.map_->size() == other.value_.map_->size()
+             && (*value_.map_) == (*other.value_.map_);
+#else
+   case arrayValue:
+      return value_.array_->compare( *(other.value_.array_) ) == 0;
+   case objectValue:
+      return value_.map_->compare( *(other.value_.map_) ) == 0;
+#endif
+   default:
+      JSON_ASSERT_UNREACHABLE;
+   }
+   return 0;  // unreachable
+}
+
+bool 
+Value::operator !=( const Value &other ) const
+{
+   return !( *this == other );
+}
+
+const char *
+Value::asCString() const
+{
+   JSON_ASSERT( type_ == stringValue );
+   return value_.string_;
+}
+
+
+std::string 
+Value::asString() const
+{
+   switch ( type_ )
+   {
+   case nullValue:
+      return "";
+   case stringValue:
+      return value_.string_ ? value_.string_ : "";
+   case booleanValue:
+      return value_.bool_ ? "true" : "false";
+   case intValue:
+   case uintValue:
+   case realValue:
+   case arrayValue:
+   case objectValue:
+      JSON_ASSERT_MESSAGE( false, "Type is not convertible to string" );
+   default:
+      JSON_ASSERT_UNREACHABLE;
+   }
+   return ""; // unreachable
+}
+
+# ifdef JSON_USE_CPPTL
+CppTL::ConstString 
+Value::asConstString() const
+{
+   return CppTL::ConstString( asString().c_str() );
+}
+# endif
+
+Value::Int 
+Value::asInt() const
+{
+   switch ( type_ )
+   {
+   case nullValue:
+      return 0;
+   case intValue:
+      return value_.int_;
+   case uintValue:
+      JSON_ASSERT_MESSAGE( value_.uint_ < (unsigned)maxInt, "integer out of signed integer range" );
+      return value_.uint_;
+   case realValue:
+      JSON_ASSERT_MESSAGE( value_.real_ >= minInt  &&  value_.real_ <= maxInt, "Real out of signed integer range" );
+      return Int( value_.real_ );
+   case booleanValue:
+      return value_.bool_ ? 1 : 0;
+   case stringValue:
+   case arrayValue:
+   case objectValue:
+      JSON_ASSERT_MESSAGE( false, "Type is not convertible to int" );
+   default:
+      JSON_ASSERT_UNREACHABLE;
+   }
+   return 0; // unreachable;
+}
+
+Value::UInt 
+Value::asUInt() const
+{
+   switch ( type_ )
+   {
+   case nullValue:
+      return 0;
+   case intValue:
+      JSON_ASSERT_MESSAGE( value_.int_ >= 0, "Negative integer can not be converted to unsigned integer" );
+      return value_.int_;
+   case uintValue:
+      return value_.uint_;
+   case realValue:
+      JSON_ASSERT_MESSAGE( value_.real_ >= 0  &&  value_.real_ <= maxUInt,  "Real out of unsigned integer range" );
+      return UInt( value_.real_ );
+   case booleanValue:
+      return value_.bool_ ? 1 : 0;
+   case stringValue:
+   case arrayValue:
+   case objectValue:
+      JSON_ASSERT_MESSAGE( false, "Type is not convertible to uint" );
+   default:
+      JSON_ASSERT_UNREACHABLE;
+   }
+   return 0; // unreachable;
+}
+
+double 
+Value::asDouble() const
+{
+   switch ( type_ )
+   {
+   case nullValue:
+      return 0.0;
+   case intValue:
+      return value_.int_;
+   case uintValue:
+      return value_.uint_;
+   case realValue:
+      return value_.real_;
+   case booleanValue:
+      return value_.bool_ ? 1.0 : 0.0;
+   case stringValue:
+   case arrayValue:
+   case objectValue:
+      JSON_ASSERT_MESSAGE( false, "Type is not convertible to double" );
+   default:
+      JSON_ASSERT_UNREACHABLE;
+   }
+   return 0; // unreachable;
+}
+
+bool 
+Value::asBool() const
+{
+   switch ( type_ )
+   {
+   case nullValue:
+      return false;
+   case intValue:
+   case uintValue:
+      return value_.int_ != 0;
+   case realValue:
+      return value_.real_ != 0.0;
+   case booleanValue:
+      return value_.bool_;
+   case stringValue:
+      return value_.string_  &&  value_.string_[0] != 0;
+   case arrayValue:
+   case objectValue:
+      return value_.map_->size() != 0;
+   default:
+      JSON_ASSERT_UNREACHABLE;
+   }
+   return false; // unreachable;
+}
+
+
+bool 
+Value::isConvertibleTo( ValueType other ) const
+{
+   switch ( type_ )
+   {
+   case nullValue:
+      return true;
+   case intValue:
+      return ( other == nullValue  &&  value_.int_ == 0 )
+             || other == intValue
+             || ( other == uintValue  && value_.int_ >= 0 )
+             || other == realValue
+             || other == stringValue
+             || other == booleanValue;
+   case uintValue:
+      return ( other == nullValue  &&  value_.uint_ == 0 )
+             || ( other == intValue  && value_.uint_ <= (unsigned)maxInt )
+             || other == uintValue
+             || other == realValue
+             || other == stringValue
+             || other == booleanValue;
+   case realValue:
+      return ( other == nullValue  &&  value_.real_ == 0.0 )
+             || ( other == intValue  &&  value_.real_ >= minInt  &&  value_.real_ <= maxInt )
+             || ( other == uintValue  &&  value_.real_ >= 0  &&  value_.real_ <= maxUInt )
+             || other == realValue
+             || other == stringValue
+             || other == booleanValue;
+   case booleanValue:
+      return ( other == nullValue  &&  value_.bool_ == false )
+             || other == intValue
+             || other == uintValue
+             || other == realValue
+             || other == stringValue
+             || other == booleanValue;
+   case stringValue:
+      return other == stringValue
+             || ( other == nullValue  &&  (!value_.string_  ||  value_.string_[0] == 0) );
+   case arrayValue:
+      return other == arrayValue
+             ||  ( other == nullValue  &&  value_.map_->size() == 0 );
+   case objectValue:
+      return other == objectValue
+             ||  ( other == nullValue  &&  value_.map_->size() == 0 );
+   default:
+      JSON_ASSERT_UNREACHABLE;
+   }
+   return false; // unreachable;
+}
+
+
+/// Number of values in array or object
+Value::UInt 
+Value::size() const
+{
+   switch ( type_ )
+   {
+   case nullValue:
+   case intValue:
+   case uintValue:
+   case realValue:
+   case booleanValue:
+   case stringValue:
+      return 0;
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   case arrayValue:  // size of the array is highest index + 1
+      if ( !value_.map_->empty() )
+      {
+         ObjectValues::const_iterator itLast = value_.map_->end();
+         --itLast;
+         return (*itLast).first.index()+1;
+      }
+      return 0;
+   case objectValue:
+      return Int( value_.map_->size() );
+#else
+   case arrayValue:
+      return Int( value_.array_->size() );
+   case objectValue:
+      return Int( value_.map_->size() );
+#endif
+   default:
+      JSON_ASSERT_UNREACHABLE;
+   }
+   return 0; // unreachable;
+}
+
+
+bool 
+Value::empty() const
+{
+   if ( isNull() || isArray() || isObject() )
+      return size() == 0u;
+   else
+      return false;
+}
+
+
+bool
+Value::operator!() const
+{
+   return isNull();
+}
+
+
+void 
+Value::clear()
+{
+   JSON_ASSERT( type_ == nullValue  ||  type_ == arrayValue  || type_ == objectValue );
+
+   switch ( type_ )
+   {
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   case arrayValue:
+   case objectValue:
+      value_.map_->clear();
+      break;
+#else
+   case arrayValue:
+      value_.array_->clear();
+      break;
+   case objectValue:
+      value_.map_->clear();
+      break;
+#endif
+   default:
+      break;
+   }
+}
+
+void 
+Value::resize( UInt newSize )
+{
+   JSON_ASSERT( type_ == nullValue  ||  type_ == arrayValue );
+   if ( type_ == nullValue )
+      *this = Value( arrayValue );
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   UInt oldSize = size();
+   if ( newSize == 0 )
+      clear();
+   else if ( newSize > oldSize )
+      (*this)[ newSize - 1 ];
+   else
+   {
+      for ( UInt index = newSize; index < oldSize; ++index )
+         value_.map_->erase( index );
+      assert( size() == newSize );
+   }
+#else
+   value_.array_->resize( newSize );
+#endif
+}
+
+
+Value &
+Value::operator[]( UInt index )
+{
+   JSON_ASSERT( type_ == nullValue  ||  type_ == arrayValue );
+   if ( type_ == nullValue )
+      *this = Value( arrayValue );
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   CZString key( index );
+   ObjectValues::iterator it = value_.map_->lower_bound( key );
+   if ( it != value_.map_->end()  &&  (*it).first == key )
+      return (*it).second;
+
+   ObjectValues::value_type defaultValue( key, null );
+   it = value_.map_->insert( it, defaultValue );
+   return (*it).second;
+#else
+   return value_.array_->resolveReference( index );
+#endif
+}
+
+
+const Value &
+Value::operator[]( UInt index ) const
+{
+   JSON_ASSERT( type_ == nullValue  ||  type_ == arrayValue );
+   if ( type_ == nullValue )
+      return null;
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   CZString key( index );
+   ObjectValues::const_iterator it = value_.map_->find( key );
+   if ( it == value_.map_->end() )
+      return null;
+   return (*it).second;
+#else
+   Value *value = value_.array_->find( index );
+   return value ? *value : null;
+#endif
+}
+
+
+Value &
+Value::operator[]( const char *key )
+{
+   return resolveReference( key, false );
+}
+
+
+Value &
+Value::resolveReference( const char *key, 
+                         bool isStatic )
+{
+   JSON_ASSERT( type_ == nullValue  ||  type_ == objectValue );
+   if ( type_ == nullValue )
+      *this = Value( objectValue );
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   CZString actualKey( key, isStatic ? CZString::noDuplication 
+                                     : CZString::duplicateOnCopy );
+   ObjectValues::iterator it = value_.map_->lower_bound( actualKey );
+   if ( it != value_.map_->end()  &&  (*it).first == actualKey )
+      return (*it).second;
+
+   ObjectValues::value_type defaultValue( actualKey, null );
+   it = value_.map_->insert( it, defaultValue );
+   Value &value = (*it).second;
+   return value;
+#else
+   return value_.map_->resolveReference( key, isStatic );
+#endif
+}
+
+
+Value 
+Value::get( UInt index, 
+            const Value &defaultValue ) const
+{
+   const Value *value = &((*this)[index]);
+   return value == &null ? defaultValue : *value;
+}
+
+
+bool 
+Value::isValidIndex( UInt index ) const
+{
+   return index < size();
+}
+
+
+
+const Value &
+Value::operator[]( const char *key ) const
+{
+   JSON_ASSERT( type_ == nullValue  ||  type_ == objectValue );
+   if ( type_ == nullValue )
+      return null;
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   CZString actualKey( key, CZString::noDuplication );
+   ObjectValues::const_iterator it = value_.map_->find( actualKey );
+   if ( it == value_.map_->end() )
+      return null;
+   return (*it).second;
+#else
+   const Value *value = value_.map_->find( key );
+   return value ? *value : null;
+#endif
+}
+
+
+Value &
+Value::operator[]( const std::string &key )
+{
+   return (*this)[ key.c_str() ];
+}
+
+
+const Value &
+Value::operator[]( const std::string &key ) const
+{
+   return (*this)[ key.c_str() ];
+}
+
+Value &
+Value::operator[]( const StaticString &key )
+{
+   return resolveReference( key, true );
+}
+
+
+# ifdef JSON_USE_CPPTL
+Value &
+Value::operator[]( const CppTL::ConstString &key )
+{
+   return (*this)[ key.c_str() ];
+}
+
+
+const Value &
+Value::operator[]( const CppTL::ConstString &key ) const
+{
+   return (*this)[ key.c_str() ];
+}
+# endif
+
+
+Value &
+Value::append( const Value &value )
+{
+   return (*this)[size()] = value;
+}
+
+
+Value 
+Value::get( const char *key, 
+            const Value &defaultValue ) const
+{
+   const Value *value = &((*this)[key]);
+   return value == &null ? defaultValue : *value;
+}
+
+
+Value 
+Value::get( const std::string &key,
+            const Value &defaultValue ) const
+{
+   return get( key.c_str(), defaultValue );
+}
+
+Value
+Value::removeMember( const char* key )
+{
+   JSON_ASSERT( type_ == nullValue  ||  type_ == objectValue );
+   if ( type_ == nullValue )
+      return null;
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   CZString actualKey( key, CZString::noDuplication );
+   ObjectValues::iterator it = value_.map_->find( actualKey );
+   if ( it == value_.map_->end() )
+      return null;
+   Value old(it->second);
+   value_.map_->erase(it);
+   return old;
+#else
+   Value *value = value_.map_->find( key );
+   if (value){
+      Value old(*value);
+      value_.map_.remove( key );
+      return old;
+   } else {
+      return null;
+   }
+#endif
+}
+
+Value
+Value::removeMember( const std::string &key )
+{
+   return removeMember( key.c_str() );
+}
+
+# ifdef JSON_USE_CPPTL
+Value 
+Value::get( const CppTL::ConstString &key,
+            const Value &defaultValue ) const
+{
+   return get( key.c_str(), defaultValue );
+}
+# endif
+
+bool 
+Value::isMember( const char *key ) const
+{
+   const Value *value = &((*this)[key]);
+   return value != &null;
+}
+
+
+bool 
+Value::isMember( const std::string &key ) const
+{
+   return isMember( key.c_str() );
+}
+
+
+# ifdef JSON_USE_CPPTL
+bool 
+Value::isMember( const CppTL::ConstString &key ) const
+{
+   return isMember( key.c_str() );
+}
+#endif
+
+Value::Members 
+Value::getMemberNames() const
+{
+   JSON_ASSERT( type_ == nullValue  ||  type_ == objectValue );
+   if ( type_ == nullValue )
+       return Value::Members();
+   Members members;
+   members.reserve( value_.map_->size() );
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   ObjectValues::const_iterator it = value_.map_->begin();
+   ObjectValues::const_iterator itEnd = value_.map_->end();
+   for ( ; it != itEnd; ++it )
+      members.push_back( std::string( (*it).first.c_str() ) );
+#else
+   ValueInternalMap::IteratorState it;
+   ValueInternalMap::IteratorState itEnd;
+   value_.map_->makeBeginIterator( it );
+   value_.map_->makeEndIterator( itEnd );
+   for ( ; !ValueInternalMap::equals( it, itEnd ); ValueInternalMap::increment(it) )
+      members.push_back( std::string( ValueInternalMap::key( it ) ) );
+#endif
+   return members;
+}
+//
+//# ifdef JSON_USE_CPPTL
+//EnumMemberNames
+//Value::enumMemberNames() const
+//{
+//   if ( type_ == objectValue )
+//   {
+//      return CppTL::Enum::any(  CppTL::Enum::transform(
+//         CppTL::Enum::keys( *(value_.map_), CppTL::Type<const CZString &>() ),
+//         MemberNamesTransform() ) );
+//   }
+//   return EnumMemberNames();
+//}
+//
+//
+//EnumValues 
+//Value::enumValues() const
+//{
+//   if ( type_ == objectValue  ||  type_ == arrayValue )
+//      return CppTL::Enum::anyValues( *(value_.map_), 
+//                                     CppTL::Type<const Value &>() );
+//   return EnumValues();
+//}
+//
+//# endif
+
+
+bool
+Value::isNull() const
+{
+   return type_ == nullValue;
+}
+
+
+bool 
+Value::isBool() const
+{
+   return type_ == booleanValue;
+}
+
+
+bool 
+Value::isInt() const
+{
+   return type_ == intValue;
+}
+
+
+bool 
+Value::isUInt() const
+{
+   return type_ == uintValue;
+}
+
+
+bool 
+Value::isIntegral() const
+{
+   return type_ == intValue  
+          ||  type_ == uintValue  
+          ||  type_ == booleanValue;
+}
+
+
+bool 
+Value::isDouble() const
+{
+   return type_ == realValue;
+}
+
+
+bool 
+Value::isNumeric() const
+{
+   return isIntegral() || isDouble();
+}
+
+
+bool 
+Value::isString() const
+{
+   return type_ == stringValue;
+}
+
+
+bool 
+Value::isArray() const
+{
+   return type_ == nullValue  ||  type_ == arrayValue;
+}
+
+
+bool 
+Value::isObject() const
+{
+   return type_ == nullValue  ||  type_ == objectValue;
+}
+
+
+void 
+Value::setComment( const char *comment,
+                   CommentPlacement placement )
+{
+   if ( !comments_ )
+      comments_ = new CommentInfo[numberOfCommentPlacement];
+   comments_[placement].setComment( comment );
+}
+
+
+void 
+Value::setComment( const std::string &comment,
+                   CommentPlacement placement )
+{
+   setComment( comment.c_str(), placement );
+}
+
+
+bool 
+Value::hasComment( CommentPlacement placement ) const
+{
+   return comments_ != 0  &&  comments_[placement].comment_ != 0;
+}
+
+std::string 
+Value::getComment( CommentPlacement placement ) const
+{
+   if ( hasComment(placement) )
+      return comments_[placement].comment_;
+   return "";
+}
+
+
+std::string 
+Value::toStyledString() const
+{
+   StyledWriter writer;
+   return writer.write( *this );
+}
+
+
+Value::const_iterator 
+Value::begin() const
+{
+   switch ( type_ )
+   {
+#ifdef JSON_VALUE_USE_INTERNAL_MAP
+   case arrayValue:
+      if ( value_.array_ )
+      {
+         ValueInternalArray::IteratorState it;
+         value_.array_->makeBeginIterator( it );
+         return const_iterator( it );
+      }
+      break;
+   case objectValue:
+      if ( value_.map_ )
+      {
+         ValueInternalMap::IteratorState it;
+         value_.map_->makeBeginIterator( it );
+         return const_iterator( it );
+      }
+      break;
+#else
+   case arrayValue:
+   case objectValue:
+      if ( value_.map_ )
+         return const_iterator( value_.map_->begin() );
+      break;
+#endif
+   default:
+      break;
+   }
+   return const_iterator();
+}
+
+Value::const_iterator 
+Value::end() const
+{
+   switch ( type_ )
+   {
+#ifdef JSON_VALUE_USE_INTERNAL_MAP
+   case arrayValue:
+      if ( value_.array_ )
+      {
+         ValueInternalArray::IteratorState it;
+         value_.array_->makeEndIterator( it );
+         return const_iterator( it );
+      }
+      break;
+   case objectValue:
+      if ( value_.map_ )
+      {
+         ValueInternalMap::IteratorState it;
+         value_.map_->makeEndIterator( it );
+         return const_iterator( it );
+      }
+      break;
+#else
+   case arrayValue:
+   case objectValue:
+      if ( value_.map_ )
+         return const_iterator( value_.map_->end() );
+      break;
+#endif
+   default:
+      break;
+   }
+   return const_iterator();
+}
+
+
+Value::iterator 
+Value::begin()
+{
+   switch ( type_ )
+   {
+#ifdef JSON_VALUE_USE_INTERNAL_MAP
+   case arrayValue:
+      if ( value_.array_ )
+      {
+         ValueInternalArray::IteratorState it;
+         value_.array_->makeBeginIterator( it );
+         return iterator( it );
+      }
+      break;
+   case objectValue:
+      if ( value_.map_ )
+      {
+         ValueInternalMap::IteratorState it;
+         value_.map_->makeBeginIterator( it );
+         return iterator( it );
+      }
+      break;
+#else
+   case arrayValue:
+   case objectValue:
+      if ( value_.map_ )
+         return iterator( value_.map_->begin() );
+      break;
+#endif
+   default:
+      break;
+   }
+   return iterator();
+}
+
+Value::iterator 
+Value::end()
+{
+   switch ( type_ )
+   {
+#ifdef JSON_VALUE_USE_INTERNAL_MAP
+   case arrayValue:
+      if ( value_.array_ )
+      {
+         ValueInternalArray::IteratorState it;
+         value_.array_->makeEndIterator( it );
+         return iterator( it );
+      }
+      break;
+   case objectValue:
+      if ( value_.map_ )
+      {
+         ValueInternalMap::IteratorState it;
+         value_.map_->makeEndIterator( it );
+         return iterator( it );
+      }
+      break;
+#else
+   case arrayValue:
+   case objectValue:
+      if ( value_.map_ )
+         return iterator( value_.map_->end() );
+      break;
+#endif
+   default:
+      break;
+   }
+   return iterator();
+}
+
+
+// class PathArgument
+// //////////////////////////////////////////////////////////////////
+
+PathArgument::PathArgument()
+   : kind_( kindNone )
+{
+}
+
+
+PathArgument::PathArgument( Value::UInt index )
+   : index_( index )
+   , kind_( kindIndex )
+{
+}
+
+
+PathArgument::PathArgument( const char *key )
+   : key_( key )
+   , kind_( kindKey )
+{
+}
+
+
+PathArgument::PathArgument( const std::string &key )
+   : key_( key.c_str() )
+   , kind_( kindKey )
+{
+}
+
+// class Path
+// //////////////////////////////////////////////////////////////////
+
+Path::Path( const std::string &path,
+            const PathArgument &a1,
+            const PathArgument &a2,
+            const PathArgument &a3,
+            const PathArgument &a4,
+            const PathArgument &a5 )
+{
+   InArgs in;
+   in.push_back( &a1 );
+   in.push_back( &a2 );
+   in.push_back( &a3 );
+   in.push_back( &a4 );
+   in.push_back( &a5 );
+   makePath( path, in );
+}
+
+
+void 
+Path::makePath( const std::string &path,
+                const InArgs &in )
+{
+   const char *current = path.c_str();
+   const char *end = current + path.length();
+   InArgs::const_iterator itInArg = in.begin();
+   while ( current != end )
+   {
+      if ( *current == '[' )
+      {
+         ++current;
+         if ( *current == '%' )
+            addPathInArg( path, in, itInArg, PathArgument::kindIndex );
+         else
+         {
+            Value::UInt index = 0;
+            for ( ; current != end && *current >= '0'  &&  *current <= '9'; ++current )
+               index = index * 10 + Value::UInt(*current - '0');
+            args_.push_back( index );
+         }
+         if ( current == end  ||  *current++ != ']' )
+            invalidPath( path, int(current - path.c_str()) );
+      }
+      else if ( *current == '%' )
+      {
+         addPathInArg( path, in, itInArg, PathArgument::kindKey );
+         ++current;
+      }
+      else if ( *current == '.' )
+      {
+         ++current;
+      }
+      else
+      {
+         const char *beginName = current;
+         while ( current != end  &&  !strchr( "[.", *current ) )
+            ++current;
+         args_.push_back( std::string( beginName, current ) );
+      }
+   }
+}
+
+
+void 
+Path::addPathInArg( const std::string &, 
+                    const InArgs &in, 
+                    InArgs::const_iterator &itInArg, 
+                    PathArgument::Kind kind )
+{
+   if ( itInArg == in.end() )
+   {
+      // Error: missing argument %d
+   }
+   else if ( (*itInArg)->kind_ != kind )
+   {
+      // Error: bad argument type
+   }
+   else
+   {
+      args_.push_back( **itInArg );
+   }
+}
+
+
+void 
+Path::invalidPath( const std::string &, 
+                   int  )
+{
+   // Error: invalid path.
+}
+
+
+const Value &
+Path::resolve( const Value &root ) const
+{
+   const Value *node = &root;
+   for ( Args::const_iterator it = args_.begin(); it != args_.end(); ++it )
+   {
+      const PathArgument &arg = *it;
+      if ( arg.kind_ == PathArgument::kindIndex )
+      {
+         if ( !node->isArray()  ||  node->isValidIndex( arg.index_ ) )
+         {
+            // Error: unable to resolve path (array value expected at position...
+         }
+         node = &((*node)[arg.index_]);
+      }
+      else if ( arg.kind_ == PathArgument::kindKey )
+      {
+         if ( !node->isObject() )
+         {
+            // Error: unable to resolve path (object value expected at position...)
+         }
+         node = &((*node)[arg.key_]);
+         if ( node == &Value::null )
+         {
+            // Error: unable to resolve path (object has no member named '' at position...)
+         }
+      }
+   }
+   return *node;
+}
+
+
+Value 
+Path::resolve( const Value &root, 
+               const Value &defaultValue ) const
+{
+   const Value *node = &root;
+   for ( Args::const_iterator it = args_.begin(); it != args_.end(); ++it )
+   {
+      const PathArgument &arg = *it;
+      if ( arg.kind_ == PathArgument::kindIndex )
+      {
+         if ( !node->isArray()  ||  node->isValidIndex( arg.index_ ) )
+            return defaultValue;
+         node = &((*node)[arg.index_]);
+      }
+      else if ( arg.kind_ == PathArgument::kindKey )
+      {
+         if ( !node->isObject() )
+            return defaultValue;
+         node = &((*node)[arg.key_]);
+         if ( node == &Value::null )
+            return defaultValue;
+      }
+   }
+   return *node;
+}
+
+
+Value &
+Path::make( Value &root ) const
+{
+   Value *node = &root;
+   for ( Args::const_iterator it = args_.begin(); it != args_.end(); ++it )
+   {
+      const PathArgument &arg = *it;
+      if ( arg.kind_ == PathArgument::kindIndex )
+      {
+         if ( !node->isArray() )
+         {
+            // Error: node is not an array at position ...
+         }
+         node = &((*node)[arg.index_]);
+      }
+      else if ( arg.kind_ == PathArgument::kindKey )
+      {
+         if ( !node->isObject() )
+         {
+            // Error: node is not an object at position...
+         }
+         node = &((*node)[arg.key_]);
+      }
+   }
+   return *node;
+}
+
+
+} // namespace Json
 
=== added file 'plugin/json_server/json/json_valueiterator.inl'
--- plugin/json_server/json/json_valueiterator.inl	1970-01-01 00:00:00 +0000
+++ plugin/json_server/json/json_valueiterator.inl	2011-05-04 01:52:37 +0000
@@ -0,0 +1,330 @@
+/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ * 
+ *  JSON Library, originally from http://jsoncpp.sourceforge.net/
+ *
+ *  Copyright (C) 2011 Stewart Smith
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are
+ *  met:
+ *
+ *      * Redistributions of source code must retain the above copyright
+ *  notice, this list of conditions and the following disclaimer.
+ *
+ *      * Redistributions in binary form must reproduce the above
+ *  copyright notice, this list of conditions and the following disclaimer
+ *  in the documentation and/or other materials provided with the
+ *  distribution.
+ *
+ *      * The names of its contributors may not be used to endorse or
+ *  promote products derived from this software without specific prior
+ *  written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#pragma once
+// included by json_value.cpp
+// everything is within Json namespace
+
+
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// class ValueIteratorBase
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+
+ValueIteratorBase::ValueIteratorBase()
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   : current_()
+   , isNull_( true )
+{
+}
+#else
+   : isArray_( true )
+   , isNull_( true )
+{
+   iterator_.array_ = ValueInternalArray::IteratorState();
+}
+#endif
+
+
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+ValueIteratorBase::ValueIteratorBase( const Value::ObjectValues::iterator &current )
+   : current_( current )
+   , isNull_( false )
+{
+}
+#else
+ValueIteratorBase::ValueIteratorBase( const ValueInternalArray::IteratorState &state )
+   : isArray_( true )
+{
+   iterator_.array_ = state;
+}
+
+
+ValueIteratorBase::ValueIteratorBase( const ValueInternalMap::IteratorState &state )
+   : isArray_( false )
+{
+   iterator_.map_ = state;
+}
+#endif
+
+Value &
+ValueIteratorBase::deref() const
+{
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   return current_->second;
+#else
+   if ( isArray_ )
+      return ValueInternalArray::dereference( iterator_.array_ );
+   return ValueInternalMap::value( iterator_.map_ );
+#endif
+}
+
+
+void 
+ValueIteratorBase::increment()
+{
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   ++current_;
+#else
+   if ( isArray_ )
+      ValueInternalArray::increment( iterator_.array_ );
+   ValueInternalMap::increment( iterator_.map_ );
+#endif
+}
+
+
+void 
+ValueIteratorBase::decrement()
+{
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   --current_;
+#else
+   if ( isArray_ )
+      ValueInternalArray::decrement( iterator_.array_ );
+   ValueInternalMap::decrement( iterator_.map_ );
+#endif
+}
+
+
+ValueIteratorBase::difference_type 
+ValueIteratorBase::computeDistance( const SelfType &other ) const
+{
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+# ifdef JSON_USE_CPPTL_SMALLMAP
+   return current_ - other.current_;
+# else
+   // Iterator for null value are initialized using the default
+   // constructor, which initialize current_ to the default
+   // std::map::iterator. As begin() and end() are two instance 
+   // of the default std::map::iterator, they can not be compared.
+   // To allow this, we handle this comparison specifically.
+   if ( isNull_  &&  other.isNull_ )
+   {
+      return 0;
+   }
+
+
+   // Usage of std::distance is not portable (does not compile with Sun Studio 12 RogueWave STL,
+   // which is the one used by default).
+   // Using a portable hand-made version for non random iterator instead:
+   //   return difference_type( std::distance( current_, other.current_ ) );
+   difference_type myDistance = 0;
+   for ( Value::ObjectValues::iterator it = current_; it != other.current_; ++it )
+   {
+      ++myDistance;
+   }
+   return myDistance;
+# endif
+#else
+   if ( isArray_ )
+      return ValueInternalArray::distance( iterator_.array_, other.iterator_.array_ );
+   return ValueInternalMap::distance( iterator_.map_, other.iterator_.map_ );
+#endif
+}
+
+
+bool 
+ValueIteratorBase::isEqual( const SelfType &other ) const
+{
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   if ( isNull_ )
+   {
+      return other.isNull_;
+   }
+   return current_ == other.current_;
+#else
+   if ( isArray_ )
+      return ValueInternalArray::equals( iterator_.array_, other.iterator_.array_ );
+   return ValueInternalMap::equals( iterator_.map_, other.iterator_.map_ );
+#endif
+}
+
+
+void 
+ValueIteratorBase::copy( const SelfType &other )
+{
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   current_ = other.current_;
+#else
+   if ( isArray_ )
+      iterator_.array_ = other.iterator_.array_;
+   iterator_.map_ = other.iterator_.map_;
+#endif
+}
+
+
+Value 
+ValueIteratorBase::key() const
+{
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   const Value::CZString czstring = (*current_).first;
+   if ( czstring.c_str() )
+   {
+      if ( czstring.isStaticString() )
+         return Value( StaticString( czstring.c_str() ) );
+      return Value( czstring.c_str() );
+   }
+   return Value( czstring.index() );
+#else
+   if ( isArray_ )
+      return Value( ValueInternalArray::indexOf( iterator_.array_ ) );
+   bool isStatic;
+   const char *memberName = ValueInternalMap::key( iterator_.map_, isStatic );
+   if ( isStatic )
+      return Value( StaticString( memberName ) );
+   return Value( memberName );
+#endif
+}
+
+
+UInt 
+ValueIteratorBase::index() const
+{
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   const Value::CZString czstring = (*current_).first;
+   if ( !czstring.c_str() )
+      return czstring.index();
+   return Value::UInt( -1 );
+#else
+   if ( isArray_ )
+      return Value::UInt( ValueInternalArray::indexOf( iterator_.array_ ) );
+   return Value::UInt( -1 );
+#endif
+}
+
+
+const char *
+ValueIteratorBase::memberName() const
+{
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+   const char *name = (*current_).first.c_str();
+   return name ? name : "";
+#else
+   if ( !isArray_ )
+      return ValueInternalMap::key( iterator_.map_ );
+   return "";
+#endif
+}
+
+
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// class ValueConstIterator
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+
+ValueConstIterator::ValueConstIterator()
+{
+}
+
+
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+ValueConstIterator::ValueConstIterator( const Value::ObjectValues::iterator &current )
+   : ValueIteratorBase( current )
+{
+}
+#else
+ValueConstIterator::ValueConstIterator( const ValueInternalArray::IteratorState &state )
+   : ValueIteratorBase( state )
+{
+}
+
+ValueConstIterator::ValueConstIterator( const ValueInternalMap::IteratorState &state )
+   : ValueIteratorBase( state )
+{
+}
+#endif
+
+ValueConstIterator &
+ValueConstIterator::operator =( const ValueIteratorBase &other )
+{
+   copy( other );
+   return *this;
+}
+
+
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// class ValueIterator
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+// //////////////////////////////////////////////////////////////////
+
+ValueIterator::ValueIterator()
+{
+}
+
+
+#ifndef JSON_VALUE_USE_INTERNAL_MAP
+ValueIterator::ValueIterator( const Value::ObjectValues::iterator &current )
+   : ValueIteratorBase( current )
+{
+}
+#else
+ValueIterator::ValueIterator( const ValueInternalArray::IteratorState &state )
+   : ValueIteratorBase( state )
+{
+}
+
+ValueIterator::ValueIterator( const ValueInternalMap::IteratorState &state )
+   : ValueIteratorBase( state )
+{
+}
+#endif
+
+ValueIterator::ValueIterator( const ValueConstIterator &other )
+   : ValueIteratorBase( other )
+{
+}
+
+ValueIterator::ValueIterator( const ValueIterator &other )
+   : ValueIteratorBase( other )
+{
+}
+
+ValueIterator &
+ValueIterator::operator =( const SelfType &other )
+{
+   copy( other );
+   return *this;
+}
 
=== added file 'plugin/json_server/json/json_writer.cpp'
--- plugin/json_server/json/json_writer.cpp	1970-01-01 00:00:00 +0000
+++ plugin/json_server/json/json_writer.cpp	2011-05-04 01:52:37 +0000
@@ -0,0 +1,862 @@
+/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ * 
+ *  JSON Library, originally from http://jsoncpp.sourceforge.net/
+ *
+ *  Copyright (C) 2011 Stewart Smith
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are
+ *  met: