Add QJson files.

src/webui/qjson/FlexLexer.h

@@ -0,0 +1,206 @@
+// -*-C++-*-
+// FlexLexer.h -- define interfaces for lexical analyzer classes generated
+// by flex
+
+// Copyright (c) 1993 The Regents of the University of California.
+// All rights reserved.
+//
+// This code is derived from software contributed to Berkeley by
+// Kent Williams and Tom Epperly.
+//
+//  Redistribution and use in source and binary forms, with or without
+//  modification, are permitted provided that the following conditions
+//  are met:
+
+//  1. Redistributions of source code must retain the above copyright
+//  notice, this list of conditions and the following disclaimer.
+//  2. 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.
+
+//  Neither the name of the University nor the names of its contributors
+//  may be used to endorse or promote products derived from this software
+//  without specific prior written permission.
+
+//  THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+//  IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+//  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+//  PURPOSE.
+
+// This file defines FlexLexer, an abstract class which specifies the
+// external interface provided to flex C++ lexer objects, and yyFlexLexer,
+// which defines a particular lexer class.
+//
+// If you want to create multiple lexer classes, you use the -P flag
+// to rename each yyFlexLexer to some other xxFlexLexer.  You then
+// include <FlexLexer.h> in your other sources once per lexer class:
+//
+//	#undef yyFlexLexer
+//	#define yyFlexLexer xxFlexLexer
+//	#include <FlexLexer.h>
+//
+//	#undef yyFlexLexer
+//	#define yyFlexLexer zzFlexLexer
+//	#include <FlexLexer.h>
+//	...
+
+#ifndef __FLEX_LEXER_H
+// Never included before - need to define base class.
+#define __FLEX_LEXER_H
+
+#include <iostream>
+#  ifndef FLEX_STD
+#    define FLEX_STD std::
+#  endif
+
+extern "C++" {
+
+struct yy_buffer_state;
+typedef int yy_state_type;
+
+class FlexLexer {
+public:
+	virtual ~FlexLexer()	{ }
+
+	const char* YYText() const	{ return yytext; }
+	int YYLeng()	const	{ return yyleng; }
+
+	virtual void
+		yy_switch_to_buffer( struct yy_buffer_state* new_buffer ) = 0;
+	virtual struct yy_buffer_state*
+		yy_create_buffer( FLEX_STD istream* s, int size ) = 0;
+	virtual void yy_delete_buffer( struct yy_buffer_state* b ) = 0;
+	virtual void yyrestart( FLEX_STD istream* s ) = 0;
+
+	virtual int yylex() = 0;
+
+	// Call yylex with new input/output sources.
+	int yylex( FLEX_STD istream* new_in, FLEX_STD ostream* new_out = 0 )
+		{
+		switch_streams( new_in, new_out );
+		return yylex();
+		}
+
+	// Switch to new input/output streams.  A nil stream pointer
+	// indicates "keep the current one".
+	virtual void switch_streams( FLEX_STD istream* new_in = 0,
+					FLEX_STD ostream* new_out = 0 ) = 0;
+
+	int lineno() const		{ return yylineno; }
+
+	int debug() const		{ return yy_flex_debug; }
+	void set_debug( int flag )	{ yy_flex_debug = flag; }
+
+protected:
+	char* yytext;
+	int yyleng;
+	int yylineno;		// only maintained if you use %option yylineno
+	int yy_flex_debug;	// only has effect with -d or "%option debug"
+};
+
+}
+#endif // FLEXLEXER_H
+
+#if defined(yyFlexLexer) || ! defined(yyFlexLexerOnce)
+// Either this is the first time through (yyFlexLexerOnce not defined),
+// or this is a repeated include to define a different flavor of
+// yyFlexLexer, as discussed in the flex manual.
+#define yyFlexLexerOnce
+
+extern "C++" {
+
+class yyFlexLexer : public FlexLexer {
+public:
+	// arg_yyin and arg_yyout default to the cin and cout, but we
+	// only make that assignment when initializing in yylex().
+	yyFlexLexer( FLEX_STD istream* arg_yyin = 0, FLEX_STD ostream* arg_yyout = 0 );
+
+	virtual ~yyFlexLexer();
+
+	void yy_switch_to_buffer( struct yy_buffer_state* new_buffer );
+	struct yy_buffer_state* yy_create_buffer( FLEX_STD istream* s, int size );
+	void yy_delete_buffer( struct yy_buffer_state* b );
+	void yyrestart( FLEX_STD istream* s );
+
+	void yypush_buffer_state( struct yy_buffer_state* new_buffer );
+	void yypop_buffer_state();
+
+	virtual int yylex();
+	virtual void switch_streams( FLEX_STD istream* new_in, FLEX_STD ostream* new_out = 0 );
+	virtual int yywrap();
+
+protected:
+	virtual int LexerInput( char* buf, int max_size );
+	virtual void LexerOutput( const char* buf, int size );
+	virtual void LexerError( const char* msg );
+
+	void yyunput( int c, char* buf_ptr );
+	int yyinput();
+
+	void yy_load_buffer_state();
+	void yy_init_buffer( struct yy_buffer_state* b, FLEX_STD istream* s );
+	void yy_flush_buffer( struct yy_buffer_state* b );
+
+	int yy_start_stack_ptr;
+	int yy_start_stack_depth;
+	int* yy_start_stack;
+
+	void yy_push_state( int new_state );
+	void yy_pop_state();
+	int yy_top_state();
+
+	yy_state_type yy_get_previous_state();
+	yy_state_type yy_try_NUL_trans( yy_state_type current_state );
+	int yy_get_next_buffer();
+
+	FLEX_STD istream* yyin;	// input source for default LexerInput
+	FLEX_STD ostream* yyout;	// output sink for default LexerOutput
+
+	// yy_hold_char holds the character lost when yytext is formed.
+	char yy_hold_char;
+
+	// Number of characters read into yy_ch_buf.
+	int yy_n_chars;
+
+	// Points to current character in buffer.
+	char* yy_c_buf_p;
+
+	int yy_init;		// whether we need to initialize
+	int yy_start;		// start state number
+
+	// Flag which is used to allow yywrap()'s to do buffer switches
+	// instead of setting up a fresh yyin.  A bit of a hack ...
+	int yy_did_buffer_switch_on_eof;
+
+
+	size_t yy_buffer_stack_top; /**< index of top of stack. */
+	size_t yy_buffer_stack_max; /**< capacity of stack. */
+	struct yy_buffer_state ** yy_buffer_stack; /**< Stack as an array. */
+	void yyensure_buffer_stack(void);
+
+	// The following are not always needed, but may be depending
+	// on use of certain flex features (like REJECT or yymore()).
+
+	yy_state_type yy_last_accepting_state;
+	char* yy_last_accepting_cpos;
+
+	yy_state_type* yy_state_buf;
+	yy_state_type* yy_state_ptr;
+
+	char* yy_full_match;
+	int* yy_full_state;
+	int yy_full_lp;
+
+	int yy_lp;
+	int yy_looking_for_trail_begin;
+
+	int yy_more_flag;
+	int yy_more_len;
+	int yy_more_offset;
+	int yy_prev_more_offset;
+};
+
+}
+
+#endif // yyFlexLexer || ! yyFlexLexerOnce
+

src/webui/qjson/json_parser.hh

@@ -0,0 +1,300 @@
+/* A Bison parser, made by GNU Bison 2.7.  */
+
+/* Skeleton interface for Bison LALR(1) parsers in C++
+   
+      Copyright (C) 2002-2012 Free Software Foundation, Inc.
+   
+   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, either version 3 of the License, or
+   (at your option) any later version.
+   
+   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, see <http://www.gnu.org/licenses/>.  */
+
+/* As a special exception, you may create a larger work that contains
+   part or all of the Bison parser skeleton and distribute that work
+   under terms of your choice, so long as that work isn't itself a
+   parser generator using the skeleton or a modified version thereof
+   as a parser skeleton.  Alternatively, if you modify or redistribute
+   the parser skeleton itself, you may (at your option) remove this
+   special exception, which will cause the skeleton and the resulting
+   Bison output files to be licensed under the GNU General Public
+   License without this special exception.
+   
+   This special exception was added by the Free Software Foundation in
+   version 2.2 of Bison.  */
+
+/**
+ ** \file json_parser.hh
+ ** Define the yy::parser class.
+ */
+
+/* C++ LALR(1) parser skeleton written by Akim Demaille.  */
+
+#ifndef YY_YY_JSON_PARSER_HH_INCLUDED
+# define YY_YY_JSON_PARSER_HH_INCLUDED
+
+/* "%code requires" blocks.  */
+/* Line 33 of lalr1.cc  */
+#line 26 "json_parser.yy"
+
+  #include "parser_p.h"
+  #include "json_scanner.h"
+  #include "qjson_debug.h"
+
+  #include <QtCore/QByteArray>
+  #include <QtCore/QMap>
+  #include <QtCore/QString>
+  #include <QtCore/QVariant>
+
+  #include <limits>
+
+  class JSonScanner;
+
+  namespace QJson {
+    class Parser;
+  }
+
+  #define YYERROR_VERBOSE 1
+  
+  Q_DECLARE_METATYPE(QVector<QVariant>*)
+  Q_DECLARE_METATYPE(QVariantMap*)
+
+
+/* Line 33 of lalr1.cc  */
+#line 72 "json_parser.hh"
+
+
+#include <string>
+#include <iostream>
+#include "stack.hh"
+#include "location.hh"
+
+/* Enabling traces.  */
+#ifndef YYDEBUG
+# define YYDEBUG 1
+#endif
+
+
+namespace yy {
+/* Line 33 of lalr1.cc  */
+#line 88 "json_parser.hh"
+
+  /// A Bison parser.
+  class json_parser
+  {
+  public:
+    /// Symbol semantic values.
+#ifndef YYSTYPE
+    typedef int semantic_type;
+#else
+    typedef YYSTYPE semantic_type;
+#endif
+    /// Symbol locations.
+    typedef location location_type;
+    /// Tokens.
+    struct token
+    {
+      /* Tokens.  */
+   enum yytokentype {
+     END = 0,
+     CURLY_BRACKET_OPEN = 1,
+     CURLY_BRACKET_CLOSE = 2,
+     SQUARE_BRACKET_OPEN = 3,
+     SQUARE_BRACKET_CLOSE = 4,
+     COLON = 5,
+     COMMA = 6,
+     NUMBER = 7,
+     TRUE_VAL = 8,
+     FALSE_VAL = 9,
+     NULL_VAL = 10,
+     STRING = 11,
+     INVALID = 12
+   };
+
+    };
+    /// Token type.
+    typedef token::yytokentype token_type;
+
+    /// Build a parser object.
+    json_parser (QJson::ParserPrivate* driver_yyarg);
+    virtual ~json_parser ();
+
+    /// Parse.
+    /// \returns  0 iff parsing succeeded.
+    virtual int parse ();
+
+#if YYDEBUG
+    /// The current debugging stream.
+    std::ostream& debug_stream () const;
+    /// Set the current debugging stream.
+    void set_debug_stream (std::ostream &);
+
+    /// Type for debugging levels.
+    typedef int debug_level_type;
+    /// The current debugging level.
+    debug_level_type debug_level () const;
+    /// Set the current debugging level.
+    void set_debug_level (debug_level_type l);
+#endif
+
+  private:
+    /// Report a syntax error.
+    /// \param loc    where the syntax error is found.
+    /// \param msg    a description of the syntax error.
+    virtual void error (const location_type& loc, const std::string& msg);
+
+    /// Generate an error message.
+    /// \param state   the state where the error occurred.
+    /// \param tok     the lookahead token.
+    virtual std::string yysyntax_error_ (int yystate, int tok);
+
+#if YYDEBUG
+    /// \brief Report a symbol value on the debug stream.
+    /// \param yytype       The token type.
+    /// \param yyvaluep     Its semantic value.
+    /// \param yylocationp  Its location.
+    virtual void yy_symbol_value_print_ (int yytype,
+					 const semantic_type* yyvaluep,
+					 const location_type* yylocationp);
+    /// \brief Report a symbol on the debug stream.
+    /// \param yytype       The token type.
+    /// \param yyvaluep     Its semantic value.
+    /// \param yylocationp  Its location.
+    virtual void yy_symbol_print_ (int yytype,
+				   const semantic_type* yyvaluep,
+				   const location_type* yylocationp);
+#endif
+
+
+    /// State numbers.
+    typedef int state_type;
+    /// State stack type.
+    typedef stack<state_type>    state_stack_type;
+    /// Semantic value stack type.
+    typedef stack<semantic_type> semantic_stack_type;
+    /// location stack type.
+    typedef stack<location_type> location_stack_type;
+
+    /// The state stack.
+    state_stack_type yystate_stack_;
+    /// The semantic value stack.
+    semantic_stack_type yysemantic_stack_;
+    /// The location stack.
+    location_stack_type yylocation_stack_;
+
+    /// Whether the given \c yypact_ value indicates a defaulted state.
+    /// \param yyvalue   the value to check
+    static bool yy_pact_value_is_default_ (int yyvalue);
+
+    /// Whether the given \c yytable_ value indicates a syntax error.
+    /// \param yyvalue   the value to check
+    static bool yy_table_value_is_error_ (int yyvalue);
+
+    /// Internal symbol numbers.
+    typedef unsigned char token_number_type;
+    /* Tables.  */
+    /// For a state, the index in \a yytable_ of its portion.
+    static const signed char yypact_[];
+    static const signed char yypact_ninf_;
+
+    /// For a state, default reduction number.
+    /// Unless\a  yytable_ specifies something else to do.
+    /// Zero means the default is an error.
+    static const unsigned char yydefact_[];
+
+    static const signed char yypgoto_[];
+    static const signed char yydefgoto_[];
+
+    /// What to do in a state.
+    /// \a yytable_[yypact_[s]]: what to do in state \a s.
+    /// - if positive, shift that token.
+    /// - if negative, reduce the rule which number is the opposite.
+    /// - if zero, do what YYDEFACT says.
+    static const unsigned char yytable_[];
+    static const signed char yytable_ninf_;
+
+    static const signed char yycheck_[];
+
+    /// For a state, its accessing symbol.
+    static const unsigned char yystos_[];
+
+    /// For a rule, its LHS.
+    static const unsigned char yyr1_[];
+    /// For a rule, its RHS length.
+    static const unsigned char yyr2_[]; 
+
+    /// Convert the symbol name \a n to a form suitable for a diagnostic.
+    static std::string yytnamerr_ (const char *n);
+
+
+    /// For a symbol, its name in clear.
+    static const char* const yytname_[];
+#if YYDEBUG
+    /// A type to store symbol numbers and -1.
+    typedef signed char rhs_number_type;
+    /// A `-1'-separated list of the rules' RHS.
+    static const rhs_number_type yyrhs_[];
+    /// For each rule, the index of the first RHS symbol in \a yyrhs_.
+    static const unsigned char yyprhs_[];
+    /// For each rule, its source line number.
+    static const unsigned char yyrline_[];
+    /// For each scanner token number, its symbol number.
+    static const unsigned short int yytoken_number_[];
+    /// Report on the debug stream that the rule \a r is going to be reduced.
+    virtual void yy_reduce_print_ (int r);
+    /// Print the state stack on the debug stream.
+    virtual void yystack_print_ ();
+
+    /* Debugging.  */
+    int yydebug_;
+    std::ostream* yycdebug_;
+#endif
+
+    /// Convert a scanner token number \a t to a symbol number.
+    token_number_type yytranslate_ (int t);
+
+    /// \brief Reclaim the memory associated to a symbol.
+    /// \param yymsg        Why this token is reclaimed.
+    ///                     If null, do not display the symbol, just free it.
+    /// \param yytype       The symbol type.
+    /// \param yyvaluep     Its semantic value.
+    /// \param yylocationp  Its location.
+    inline void yydestruct_ (const char* yymsg,
+			     int yytype,
+			     semantic_type* yyvaluep,
+			     location_type* yylocationp);
+
+    /// Pop \a n symbols the three stacks.
+    inline void yypop_ (unsigned int n = 1);
+
+    /* Constants.  */
+    static const int yyeof_;
+    /* LAST_ -- Last index in TABLE_.  */
+    static const int yylast_;
+    static const int yynnts_;
+    static const int yyempty_;
+    static const int yyfinal_;
+    static const int yyterror_;
+    static const int yyerrcode_;
+    static const int yyntokens_;
+    static const unsigned int yyuser_token_number_max_;
+    static const token_number_type yyundef_token_;
+
+    /* User arguments.  */
+    QJson::ParserPrivate* driver;
+  };
+
+} // yy
+/* Line 33 of lalr1.cc  */
+#line 297 "json_parser.hh"
+
+
+
+#endif /* !YY_YY_JSON_PARSER_HH_INCLUDED  */

src/webui/qjson/json_scanner.cpp

@@ -0,0 +1,82 @@
+/* This file is part of QJson
+ *
+ * Copyright (C) 2008 Flavio Castelli <flavio.castelli@gmail.com>
+ * Copyright (C) 2013 Silvio Moioli <silvio@moioli.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software Foundation.
+ * 
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+#include "json_scanner.cc"
+
+#include "qjson_debug.h"
+#include "json_scanner.h"
+#include "json_parser.hh"
+
+#include <ctype.h>
+
+#include <QtCore/QDebug>
+#include <QtCore/QRegExp>
+
+#include <cassert>
+
+
+JSonScanner::JSonScanner(QIODevice* io)
+  : m_allowSpecialNumbers(false),
+    m_io (io),
+    m_criticalError(false),
+    m_C_locale(QLocale::C)
+{
+
+}
+
+JSonScanner::~JSonScanner()
+{
+}
+
+void JSonScanner::allowSpecialNumbers(bool allow) {
+  m_allowSpecialNumbers = allow;
+}
+
+int JSonScanner::yylex(YYSTYPE* yylval, yy::location *yylloc) {
+  m_yylval = yylval;
+  m_yylloc = yylloc;
+  m_yylloc->step();
+  int result = yylex();
+  
+  if (m_criticalError) {
+    return -1;
+  }
+  
+  return result;
+}
+
+int JSonScanner::LexerInput(char* buf, int max_size) {
+  if (!m_io->isOpen()) {
+    qCritical() << "JSonScanner::yylex - io device is not open";
+    m_criticalError = true;
+    return 0;
+  }
+  
+  int readBytes = m_io->read(buf, max_size);
+  if(readBytes < 0) {
+    qCritical() << "JSonScanner::yylex - error while reading from io device";
+    m_criticalError = true;
+    return 0;
+  }
+  
+  return readBytes;
+}
+
+

src/webui/qjson/json_scanner.h

@@ -0,0 +1,66 @@
+/* This file is part of QJson
+ *
+ * Copyright (C) 2008 Flavio Castelli <flavio.castelli@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software Foundation.
+ * 
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef _JSON_SCANNER
+#define _JSON_SCANNER
+
+#include <QtCore/QIODevice>
+#include <QtCore/QVariant>
+#include <QtCore/QLocale>
+
+#define YYSTYPE QVariant
+
+// Only include FlexLexer.h if it hasn't been already included
+#if ! defined(yyFlexLexerOnce)
+#include <FlexLexer.h>
+#endif
+
+#include "parser_p.h"
+
+
+
+namespace yy {
+  class location;
+  int yylex(YYSTYPE *yylval, yy::location *yylloc, QJson::ParserPrivate* driver);
+}
+
+class JSonScanner : public yyFlexLexer
+{
+    public:
+        explicit JSonScanner(QIODevice* io);
+        ~JSonScanner();
+
+        void allowSpecialNumbers(bool allow);
+
+        int yylex(YYSTYPE* yylval, yy::location *yylloc);
+        int yylex();
+        int LexerInput(char* buf, int max_size);
+    protected:
+        bool m_allowSpecialNumbers;
+        QIODevice* m_io;
+
+        YYSTYPE* m_yylval;
+        yy::location* m_yylloc;
+        bool m_criticalError;
+        QString m_currentString;
+        QLocale m_C_locale;
+};
+
+#endif

src/webui/qjson/location.hh

@@ -0,0 +1,181 @@
+/* A Bison parser, made by GNU Bison 2.7.  */
+
+/* Locations for Bison parsers in C++
+   
+      Copyright (C) 2002-2007, 2009-2012 Free Software Foundation, Inc.
+   
+   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, either version 3 of the License, or
+   (at your option) any later version.
+   
+   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, see <http://www.gnu.org/licenses/>.  */
+
+/* As a special exception, you may create a larger work that contains
+   part or all of the Bison parser skeleton and distribute that work
+   under terms of your choice, so long as that work isn't itself a
+   parser generator using the skeleton or a modified version thereof
+   as a parser skeleton.  Alternatively, if you modify or redistribute
+   the parser skeleton itself, you may (at your option) remove this
+   special exception, which will cause the skeleton and the resulting
+   Bison output files to be licensed under the GNU General Public
+   License without this special exception.
+   
+   This special exception was added by the Free Software Foundation in
+   version 2.2 of Bison.  */
+
+/**
+ ** \file location.hh
+ ** Define the yy::location class.
+ */
+
+#ifndef YY_YY_LOCATION_HH_INCLUDED
+# define YY_YY_LOCATION_HH_INCLUDED
+
+# include "position.hh"
+
+
+namespace yy {
+/* Line 166 of location.cc  */
+#line 47 "location.hh"
+
+  /// Abstract a location.
+  class location
+  {
+  public:
+
+    /// Construct a location from \a b to \a e.
+    location (const position& b, const position& e)
+      : begin (b)
+      , end (e)
+    {
+    }
+
+    /// Construct a 0-width location in \a p.
+    explicit location (const position& p = position ())
+      : begin (p)
+      , end (p)
+    {
+    }
+
+    /// Construct a 0-width location in \a f, \a l, \a c.
+    explicit location (std::string* f,
+                       unsigned int l = 1u,
+                       unsigned int c = 1u)
+      : begin (f, l, c)
+      , end (f, l, c)
+    {
+    }
+
+
+    /// Initialization.
+    void initialize (std::string* f = YY_NULL,
+                     unsigned int l = 1u,
+                     unsigned int c = 1u)
+    {
+      begin.initialize (f, l, c);
+      end = begin;
+    }
+
+    /** \name Line and Column related manipulators
+     ** \{ */
+  public:
+    /// Reset initial location to final location.
+    void step ()
+    {
+      begin = end;
+    }
+
+    /// Extend the current location to the COUNT next columns.
+    void columns (unsigned int count = 1)
+    {
+      end += count;
+    }
+
+    /// Extend the current location to the COUNT next lines.
+    void lines (unsigned int count = 1)
+    {
+      end.lines (count);
+    }
+    /** \} */
+
+
+  public:
+    /// Beginning of the located region.
+    position begin;
+    /// End of the located region.
+    position end;
+  };
+
+  /// Join two location objects to create a location.
+  inline const location operator+ (const location& begin, const location& end)
+  {
+    location res = begin;
+    res.end = end.end;
+    return res;
+  }
+
+  /// Add two location objects.
+  inline const location operator+ (const location& begin, unsigned int width)
+  {
+    location res = begin;
+    res.columns (width);
+    return res;
+  }
+
+  /// Add and assign a location.
+  inline location& operator+= (location& res, unsigned int width)
+  {
+    res.columns (width);
+    return res;
+  }
+
+  /// Compare two location objects.
+  inline bool
+  operator== (const location& loc1, const location& loc2)
+  {
+    return loc1.begin == loc2.begin && loc1.end == loc2.end;
+  }
+
+  /// Compare two location objects.
+  inline bool
+  operator!= (const location& loc1, const location& loc2)
+  {
+    return !(loc1 == loc2);
+  }
+
+  /** \brief Intercept output stream redirection.
+   ** \param ostr the destination output stream
+   ** \param loc a reference to the location to redirect
+   **
+   ** Avoid duplicate information.
+   */
+  template <typename YYChar>
+  inline std::basic_ostream<YYChar>&
+  operator<< (std::basic_ostream<YYChar>& ostr, const location& loc)
+  {
+    position last = loc.end - 1;
+    ostr << loc.begin;
+    if (last.filename
+	&& (!loc.begin.filename
+	    || *loc.begin.filename != *last.filename))
+      ostr << '-' << last;
+    else if (loc.begin.line != last.line)
+      ostr << '-' << last.line  << '.' << last.column;
+    else if (loc.begin.column != last.column)
+      ostr << '-' << last.column;
+    return ostr;
+  }
+
+
+} // yy
+/* Line 296 of location.cc  */
+#line 180 "location.hh"
+
+#endif /* !YY_YY_LOCATION_HH_INCLUDED  */

src/webui/qjson/parser.cpp

@@ -0,0 +1,141 @@
+/* This file is part of QJson
+ *
+ * Copyright (C) 2008 Flavio Castelli <flavio.castelli@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software Foundation.
+ * 
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "parser.h"
+#include "parser_p.h"
+#include "json_parser.hh"
+#include "json_scanner.h"
+
+#include <QtCore/QBuffer>
+#include <QtCore/QStringList>
+#include <QtCore/QTextStream>
+#include <QtCore/QDebug>
+
+using namespace QJson;
+
+ParserPrivate::ParserPrivate() :
+  m_scanner(0)
+{
+  m_specialNumbersAllowed = false;
+  reset();
+}
+
+ParserPrivate::~ParserPrivate()
+{
+  if (m_scanner)
+    delete m_scanner;
+}
+
+void ParserPrivate::setError(QString errorMsg, int errorLine) {
+  m_error = true;
+  m_errorMsg = errorMsg;
+  m_errorLine = errorLine;
+}
+
+void ParserPrivate::reset()
+{
+  m_error = false;
+  m_errorLine = 0;
+  m_errorMsg.clear();
+  if (m_scanner) {
+    delete m_scanner;
+    m_scanner = 0;
+  }
+}
+
+Parser::Parser() :
+    d(new ParserPrivate)
+{
+}
+
+Parser::~Parser()
+{
+  delete d;
+}
+
+QVariant Parser::parse (QIODevice* io, bool* ok)
+{
+  d->reset();
+
+  if (!io->isOpen()) {
+    if (!io->open(QIODevice::ReadOnly)) {
+      if (ok != 0)
+        *ok = false;
+      qCritical ("Error opening device");
+      return QVariant();
+    }
+  }
+
+  if (!io->isReadable()) {
+    if (ok != 0)
+      *ok = false;
+    qCritical ("Device is not readable");
+    io->close();
+    return QVariant();
+  }
+
+  if (io->atEnd()) {
+    if (ok != 0)
+      *ok = false;
+    d->setError(QLatin1String("No data"), 0);
+    io->close();
+    return QVariant();
+  }
+
+  d->m_scanner = new JSonScanner (io);
+  d->m_scanner->allowSpecialNumbers(d->m_specialNumbersAllowed);
+  yy::json_parser parser(d);
+  parser.parse();
+
+  delete d->m_scanner;
+  d->m_scanner = 0;
+
+  if (ok != 0)
+    *ok = !d->m_error;
+
+  io->close();
+  return d->m_result;
+}
+
+QVariant Parser::parse(const QByteArray& jsonString, bool* ok) {
+  QBuffer buffer;
+  buffer.open(QBuffer::ReadWrite);
+  buffer.write(jsonString);
+  buffer.seek(0);
+  return parse (&buffer, ok);
+}
+
+QString Parser::errorString() const
+{
+  return d->m_errorMsg;
+}
+
+int Parser::errorLine() const
+{
+  return d->m_errorLine;
+}
+
+void QJson::Parser::allowSpecialNumbers(bool allowSpecialNumbers) {
+  d->m_specialNumbersAllowed = allowSpecialNumbers;
+}
+
+bool Parser::specialNumbersAllowed() const {
+  return d->m_specialNumbersAllowed;
+}

src/webui/qjson/parser.h

@@ -0,0 +1,99 @@
+/* This file is part of QJson
+ *
+ * Copyright (C) 2008 Flavio Castelli <flavio.castelli@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software Foundation.
+ * 
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef QJSON_PARSER_H
+#define QJSON_PARSER_H
+
+#include "qjson_export.h"
+
+QT_BEGIN_NAMESPACE
+class QIODevice;
+class QVariant;
+QT_END_NAMESPACE
+
+/**
+ * Namespace used by QJson
+ */
+namespace QJson {
+
+  class ParserPrivate;
+
+  /**
+   * @brief Main class used to convert JSON data to QVariant objects
+   */
+  class QJSON_EXPORT Parser
+  {
+    public:
+      Parser();
+      ~Parser();
+
+      /**
+      * Read JSON string from the I/O Device and converts it to a QVariant object
+      * @param io Input output device
+      * @param ok if a conversion error occurs, *ok is set to false; otherwise *ok is set to true.
+      * @returns a QVariant object generated from the JSON string
+      */
+      QVariant parse(QIODevice* io, bool* ok = 0);
+
+      /**
+      * This is a method provided for convenience.
+      * @param jsonData data containing the JSON object representation
+      * @param ok if a conversion error occurs, *ok is set to false; otherwise *ok is set to true.
+      * @returns a QVariant object generated from the JSON string
+      * @sa errorString
+      * @sa errorLine
+      */
+      QVariant parse(const QByteArray& jsonData, bool* ok = 0);
+
+      /**
+      * This method returns the error message
+      * @returns a QString object containing the error message of the last parse operation
+      * @sa errorLine
+      */
+      QString errorString() const;
+
+      /**
+      * This method returns line number where the error occurred
+      * @returns the line number where the error occurred
+      * @sa errorString
+      */
+      int errorLine() const;
+
+      /**
+       * Sets whether special numbers (Infinity, -Infinity, NaN) are allowed as an extension to
+       * the standard
+       * @param  allowSpecialNumbers new value of whether special numbers are allowed
+       * @sa specialNumbersAllowed
+       */
+      void allowSpecialNumbers(bool allowSpecialNumbers);
+
+      /**
+       * @returns whether special numbers (Infinity, -Infinity, NaN) are allowed
+       * @sa allowSpecialNumbers
+       */
+      bool specialNumbersAllowed() const;
+
+    private:
+      Q_DISABLE_COPY(Parser)
+      ParserPrivate* const d;
+  };
+}
+
+#endif // QJSON_PARSER_H

src/webui/qjson/parser_p.h

@@ -0,0 +1,57 @@
+/* This file is part of QJson
+ *
+ * Copyright (C) 2008 Flavio Castelli <flavio.castelli@gmail.com>
+ * Copyright (C) 2009 Michael Leupold <lemma@confuego.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software Foundation.
+ * 
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef QJSON_PARSER_P_H
+#define QJSON_PARSER_P_H
+
+#include "parser.h"
+
+#include <QtCore/QString>
+#include <QtCore/QVariant>
+
+class JSonScanner;
+
+namespace yy {
+  class json_parser;
+}
+
+namespace QJson {
+
+  class ParserPrivate
+  {
+    public:
+      ParserPrivate();
+      ~ParserPrivate();
+
+      void reset();
+
+      void setError(QString errorMsg, int line);
+
+      JSonScanner* m_scanner;
+      bool m_error;
+      int m_errorLine;
+      QString m_errorMsg;
+      QVariant m_result;
+      bool m_specialNumbersAllowed;
+  };
+}
+
+#endif // QJSON_PARSER_H

src/webui/qjson/position.hh

@@ -0,0 +1,172 @@
+/* A Bison parser, made by GNU Bison 2.7.  */
+
+/* Positions for Bison parsers in C++
+   
+      Copyright (C) 2002-2007, 2009-2012 Free Software Foundation, Inc.
+   
+   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, either version 3 of the License, or
+   (at your option) any later version.
+   
+   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, see <http://www.gnu.org/licenses/>.  */
+
+/* As a special exception, you may create a larger work that contains
+   part or all of the Bison parser skeleton and distribute that work
+   under terms of your choice, so long as that work isn't itself a
+   parser generator using the skeleton or a modified version thereof
+   as a parser skeleton.  Alternatively, if you modify or redistribute
+   the parser skeleton itself, you may (at your option) remove this
+   special exception, which will cause the skeleton and the resulting
+   Bison output files to be licensed under the GNU General Public
+   License without this special exception.
+   
+   This special exception was added by the Free Software Foundation in
+   version 2.2 of Bison.  */
+
+/**
+ ** \file position.hh
+ ** Define the yy::position class.
+ */
+
+#ifndef YY_YY_POSITION_HH_INCLUDED
+# define YY_YY_POSITION_HH_INCLUDED
+
+# include <algorithm> // std::max
+# include <iostream>
+# include <string>
+
+# ifndef YY_NULL
+#  if defined __cplusplus && 201103L <= __cplusplus
+#   define YY_NULL nullptr
+#  else
+#   define YY_NULL 0
+#  endif
+# endif
+
+
+namespace yy {
+/* Line 36 of location.cc  */
+#line 57 "position.hh"
+  /// Abstract a position.
+  class position
+  {
+  public:
+
+    /// Construct a position.
+    explicit position (std::string* f = YY_NULL,
+                       unsigned int l = 1u,
+                       unsigned int c = 1u)
+      : filename (f)
+      , line (l)
+      , column (c)
+    {
+    }
+
+
+    /// Initialization.
+    void initialize (std::string* fn = YY_NULL,
+                     unsigned int l = 1u,
+                     unsigned int c = 1u)
+    {
+      filename = fn;
+      line = l;
+      column = c;
+    }
+
+    /** \name Line and Column related manipulators
+     ** \{ */
+    /// (line related) Advance to the COUNT next lines.
+    void lines (int count = 1)
+    {
+      column = 1u;
+      line += count;
+    }
+
+    /// (column related) Advance to the COUNT next columns.
+    void columns (int count = 1)
+    {
+      column = std::max (1u, column + count);
+    }
+    /** \} */
+
+    /// File name to which this position refers.
+    std::string* filename;
+    /// Current line number.
+    unsigned int line;
+    /// Current column number.
+    unsigned int column;
+  };
+
+  /// Add and assign a position.
+  inline position&
+  operator+= (position& res, const int width)
+  {
+    res.columns (width);
+    return res;
+  }
+
+  /// Add two position objects.
+  inline const position
+  operator+ (const position& begin, const int width)
+  {
+    position res = begin;
+    return res += width;
+  }
+
+  /// Add and assign a position.
+  inline position&
+  operator-= (position& res, const int width)
+  {
+    return res += -width;
+  }
+
+  /// Add two position objects.
+  inline const position
+  operator- (const position& begin, const int width)
+  {
+    return begin + -width;
+  }
+
+  /// Compare two position objects.
+  inline bool
+  operator== (const position& pos1, const position& pos2)
+  {
+    return (pos1.line == pos2.line
+            && pos1.column == pos2.column
+            && (pos1.filename == pos2.filename
+                || (pos1.filename && pos2.filename
+                    && *pos1.filename == *pos2.filename)));
+  }
+
+  /// Compare two position objects.
+  inline bool
+  operator!= (const position& pos1, const position& pos2)
+  {
+    return !(pos1 == pos2);
+  }
+
+  /** \brief Intercept output stream redirection.
+   ** \param ostr the destination output stream
+   ** \param pos a reference to the position to redirect
+   */
+  template <typename YYChar>
+  inline std::basic_ostream<YYChar>&
+  operator<< (std::basic_ostream<YYChar>& ostr, const position& pos)
+  {
+    if (pos.filename)
+      ostr << *pos.filename << ':';
+    return ostr << pos.line << '.' << pos.column;
+  }
+
+
+} // yy
+/* Line 148 of location.cc  */
+#line 172 "position.hh"
+#endif /* !YY_YY_POSITION_HH_INCLUDED  */

src/webui/qjson/qjson.pri

@@ -0,0 +1,19 @@
+INCLUDEPATH += $$PWD
+
+HEADERS += $$PWD/FlexLexer.h \
+           $$PWD/stack.hh \
+           $$PWD/position.hh \
+           $$PWD/location.hh \
+           $$PWD/json_parser.hh \
+           $$PWD/json_scanner.h \
+           $$PWD/parser.h \
+           $$PWD/parser_p.h \
+           $$PWD_debug.h \
+           $$PWD_export.h \
+           $$PWD/serializer.h
+
+SOURCES += $$PWD/json_parser.cc \
+           $$PWD/json_scanner.cc \
+           $$PWD/json_scanner.cpp \
+           $$PWD/parser.cpp \
+           $$PWD/serializer.cpp

src/webui/qjson/qjson_debug.h

@@ -0,0 +1,34 @@
+/* This file is part of qjson
+  *
+  * Copyright (C) 2009 Michael Leupold <lemma@confuego.org>
+  * Copyright (C) 2013 Silvio Moioli <silvio@moioli.net>
+  *
+  * This library is free software; you can redistribute it and/or
+  * modify it under the terms of the GNU Lesser General Public
+  * License version 2.1, as published by the Free Software Foundation.
+  * 
+  *
+  * This library 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
+  * Lesser General Public License for more details.
+  *
+  * You should have received a copy of the GNU Lesser General Public License
+  * along with this library; see the file COPYING.LIB.  If not, write to
+  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+  * Boston, MA 02110-1301, USA.
+  */
+
+#ifndef QJSON_DEBUG_H
+#define QJSON_DEBUG_H
+
+#include <QtCore/QDebug>
+
+// define qjsonDebug()
+#ifdef QJSON_VERBOSE_DEBUG_OUTPUT
+  inline QDebug qjsonDebug() { return QDebug(QtDebugMsg); }
+#else
+  #define qjsonDebug() if(false) QDebug(QtDebugMsg)
+#endif
+
+#endif

src/webui/qjson/qjson_export.h

@@ -0,0 +1,37 @@
+/*
+ * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2014  Vladimir Golovnev
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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 Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ *
+ * Contact : glassez@yandex.ru
+ */
+
+#ifndef QJSON_EXPORT_H
+#define QJSON_EXPORT_H
+
+#include <qglobal.h>
+#define QJSON_EXPORT
+
+#endif

src/webui/qjson/serializer.cpp

@@ -0,0 +1,444 @@
+/* This file is part of qjson
+  *
+  * Copyright (C) 2009 Till Adam <adam@kde.org>
+  * Copyright (C) 2009 Flavio Castelli <flavio@castelli.name>
+  *
+  * This library is free software; you can redistribute it and/or
+  * modify it under the terms of the GNU Lesser General Public
+  * License version 2.1, as published by the Free Software Foundation.
+  *
+  * This library 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
+  * Lesser General Public License for more details.
+  *
+  * You should have received a copy of the GNU Lesser General Public License
+  * along with this library; see the file COPYING.LIB.  If not, write to
+  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+  * Boston, MA 02110-1301, USA.
+  */
+
+#include "serializer.h"
+
+#include <QtCore/QDataStream>
+#include <QtCore/QStringList>
+#include <QtCore/QVariant>
+
+#include <cmath>
+
+#ifdef Q_OS_SOLARIS
+# ifndef isinf
+#  include <ieeefp.h>
+#  define isinf(x) (!finite((x)) && (x)==(x))
+# endif
+#endif
+
+#ifdef _MSC_VER  // using MSVC compiler
+#include <float.h>
+#endif
+
+using namespace QJson;
+
+class Serializer::SerializerPrivate {
+  public:
+    SerializerPrivate() :
+      specialNumbersAllowed(false),
+      indentMode(QJson::IndentNone),
+      doublePrecision(6) {
+        errorMessage.clear();
+    }
+    QString errorMessage;
+    bool specialNumbersAllowed;
+    IndentMode indentMode;
+    int doublePrecision;
+    QByteArray buildIndent(int spaces);
+    QByteArray serialize( const QVariant &v, bool *ok, int indentLevel = 0);
+    QString sanitizeString( QString str );
+    QByteArray join( const QList<QByteArray>& list, const QByteArray& sep );
+};
+
+QByteArray Serializer::SerializerPrivate::join( const QList<QByteArray>& list, const QByteArray& sep ) {
+  QByteArray res;
+  Q_FOREACH( const QByteArray& i, list ) {
+    if ( !res.isEmpty() )
+      res += sep;
+    res += i;
+  }
+  return res;
+}
+
+QByteArray Serializer::SerializerPrivate::serialize( const QVariant &v, bool *ok, int indentLevel)
+{
+  QByteArray str;
+
+  if ( ! v.isValid() ) { // invalid or null?
+    str = "null";
+  } else if (( v.type() == QVariant::List ) || ( v.type() == QVariant::StringList )){ // an array or a stringlist?
+    const QVariantList list = v.toList();
+    QList<QByteArray> values;
+    Q_FOREACH( const QVariant& var, list )
+    {
+      QByteArray serializedValue;
+
+      serializedValue = serialize( var, ok, indentLevel+1);
+
+      if ( !*ok ) {
+        break;
+      }
+      switch(indentMode) {
+        case QJson::IndentFull :
+        case QJson::IndentMedium :
+        case QJson::IndentMinimum :
+          values << serializedValue;
+          break;
+        case QJson::IndentCompact :
+        case QJson::IndentNone :
+        default:
+          values << serializedValue.trimmed();
+          break;
+      }
+    }
+
+    if (indentMode == QJson::IndentMedium || indentMode == QJson::IndentFull ) {
+      QByteArray indent = buildIndent(indentLevel);
+      str = indent + "[\n" + join( values, ",\n" ) + "\n" + indent + "]";
+    }
+    else if (indentMode == QJson::IndentMinimum) {
+      QByteArray indent = buildIndent(indentLevel);
+      str = indent + "[\n" + join( values, ",\n" ) + "\n" + indent + "]";
+    }
+    else if (indentMode == QJson::IndentCompact) {
+      str = "[" + join( values, "," ) + "]";
+    }
+    else {
+      str = "[ " + join( values, ", " ) + " ]";
+    }
+
+  } else if ( v.type() == QVariant::Map ) { // variant is a map?
+    const QVariantMap vmap = v.toMap();
+    QMapIterator<QString, QVariant> it( vmap );
+
+    if (indentMode == QJson::IndentMinimum) {
+      QByteArray indent = buildIndent(indentLevel);
+      str = indent + "{ ";
+    }
+    else if (indentMode == QJson::IndentMedium || indentMode == QJson::IndentFull) {
+      QByteArray indent = buildIndent(indentLevel);
+      QByteArray nextindent = buildIndent(indentLevel + 1);
+      str = indent + "{\n" + nextindent;
+    }
+    else if (indentMode == QJson::IndentCompact) {
+      str = "{";
+    }
+    else {
+      str = "{ ";
+    }
+
+    QList<QByteArray> pairs;
+    while ( it.hasNext() ) {
+      it.next();
+      indentLevel++;
+      QByteArray serializedValue = serialize( it.value(), ok, indentLevel);
+      indentLevel--;
+      if ( !*ok ) {
+        break;
+      }
+      QByteArray key   = sanitizeString( it.key() ).toUtf8();
+      QByteArray value = serializedValue.trimmed();
+      if (indentMode == QJson::IndentCompact) {
+        pairs << key + ":" + value;
+      } else {
+        pairs << key + " : " + value;
+      }
+    }
+
+    if (indentMode == QJson::IndentFull) {
+      QByteArray indent = buildIndent(indentLevel + 1);
+      str += join( pairs, ",\n" + indent);
+    }
+    else if (indentMode == QJson::IndentCompact) {
+      str += join( pairs, "," );
+    }
+    else {
+      str += join( pairs, ", " );
+    }
+
+    if (indentMode == QJson::IndentMedium || indentMode == QJson::IndentFull) {
+      QByteArray indent = buildIndent(indentLevel);
+      str += "\n" + indent + "}";
+    }
+    else if (indentMode == QJson::IndentCompact) {
+      str += "}";
+    }
+    else {
+      str += " }";
+    }
+
+  } else if ( v.type() == QVariant::Hash ) { // variant is a hash?
+    const QVariantHash vhash = v.toHash();
+    QHashIterator<QString, QVariant> it( vhash );
+
+    if (indentMode == QJson::IndentMinimum) {
+      QByteArray indent = buildIndent(indentLevel);
+      str = indent + "{ ";
+    }
+    else if (indentMode == QJson::IndentMedium || indentMode == QJson::IndentFull) {
+      QByteArray indent = buildIndent(indentLevel);
+      QByteArray nextindent = buildIndent(indentLevel + 1);
+      str = indent + "{\n" + nextindent;
+    }
+    else if (indentMode == QJson::IndentCompact) {
+      str = "{";
+    }
+    else {
+      str = "{ ";
+    }
+
+    QList<QByteArray> pairs;
+    while ( it.hasNext() ) {
+      it.next();
+
+      QByteArray serializedValue = serialize( it.value(), ok, indentLevel + 1);
+
+      if ( !*ok ) {
+        break;
+      }
+      QByteArray key   = sanitizeString( it.key() ).toUtf8();
+      QByteArray value = serializedValue.trimmed();
+      if (indentMode == QJson::IndentCompact) {
+        pairs << key + ":" + value;
+      } else {
+        pairs << key + " : " + value;
+      }
+    }
+
+    if (indentMode == QJson::IndentFull) {
+      QByteArray indent = buildIndent(indentLevel + 1);
+      str += join( pairs, ",\n" + indent);
+    }
+    else if (indentMode == QJson::IndentCompact) {
+      str += join( pairs, "," );
+    }
+    else {
+      str += join( pairs, ", " );
+    }
+
+    if (indentMode == QJson::IndentMedium || indentMode == QJson::IndentFull) {
+      QByteArray indent = buildIndent(indentLevel);
+      str += "\n" + indent + "}";
+    }
+    else if (indentMode == QJson::IndentCompact) {
+      str += "}";
+    }
+    else {
+      str += " }";
+    }
+
+  } else {
+    // Add indent, we may need to remove it later for some layouts
+    switch(indentMode) {
+      case QJson::IndentFull :
+      case QJson::IndentMedium :
+      case QJson::IndentMinimum :
+        str += buildIndent(indentLevel);
+        break;
+      case QJson::IndentCompact :
+      case QJson::IndentNone :
+      default:
+        break;
+    }
+
+    if (( v.type() == QVariant::String ) ||  ( v.type() == QVariant::ByteArray )) { // a string or a byte array?
+      str = sanitizeString( v.toString() ).toUtf8();
+    } else if (( v.type() == QVariant::Double) || ((QMetaType::Type)v.type() == QMetaType::Float)) { // a double or a float?
+      const double value = v.toDouble();
+  #if defined _WIN32 && !defined(Q_OS_SYMBIAN)
+      const bool special = _isnan(value) || !_finite(value);
+  #elif defined(Q_OS_SYMBIAN) || defined(Q_OS_ANDROID) || defined(Q_OS_BLACKBERRY) || defined(Q_OS_SOLARIS)
+      const bool special = isnan(value) || isinf(value);
+  #else
+      const bool special = std::isnan(value) || std::isinf(value);
+  #endif
+      if (special) {
+        if (specialNumbersAllowed) {
+  #if defined _WIN32 && !defined(Q_OS_SYMBIAN)
+          if (_isnan(value)) {
+  #elif defined(Q_OS_SYMBIAN) || defined(Q_OS_ANDROID) || defined(Q_OS_BLACKBERRY) || defined(Q_OS_SOLARIS)
+          if (isnan(value)) {
+  #else
+          if (std::isnan(value)) {
+  #endif
+            str += "NaN";
+          } else {
+            if (value<0) {
+              str += '-';
+            }
+            str += "Infinity";
+          }
+        } else {
+          errorMessage += QLatin1String("Attempt to write NaN or infinity, which is not supported by json\n");
+          *ok = false;
+      }
+      } else {
+        str = QByteArray::number( value , 'g', doublePrecision);
+        if( ! str.contains( "." ) && ! str.contains( "e" ) ) {
+          str += ".0";
+        }
+      }
+    } else if ( v.type() == QVariant::Bool ) { // boolean value?
+      str += ( v.toBool() ? "true" : "false" );
+    } else if ( v.type() == QVariant::ULongLong ) { // large unsigned number?
+      str += QByteArray::number( v.value<qulonglong>() );
+    } else if ( v.type() == QVariant::UInt ) { // unsigned int number?
+      str += QByteArray::number( v.value<quint32>() );
+    } else if ( v.canConvert<qlonglong>() ) { // any signed number?
+      str += QByteArray::number( v.value<qlonglong>() );
+    } else if ( v.canConvert<int>() ) { // unsigned short number?
+      str += QByteArray::number( v.value<int>() );
+    } else if ( v.canConvert<QString>() ){ // can value be converted to string?
+      // this will catch QDate, QDateTime, QUrl, ...
+      str += sanitizeString( v.toString() ).toUtf8();
+      //TODO: catch other values like QImage, QRect, ...
+    } else {
+      *ok = false;
+      errorMessage += QLatin1String("Cannot serialize ");
+      errorMessage += v.toString();
+      errorMessage += QLatin1String(" because type ");
+      errorMessage += QLatin1String(v.typeName());
+      errorMessage += QLatin1String(" is not supported by QJson\n");
+    }
+  }
+  if ( *ok )
+  {
+    return str;
+  }
+  else
+    return QByteArray();
+}
+
+QByteArray Serializer::SerializerPrivate::buildIndent(int spaces)
+{
+   QByteArray indent;
+   if (spaces < 0) {
+     spaces = 0;
+   }
+   for (int i = 0; i < spaces; i++ ) {
+     indent += " ";
+   }
+   return indent;
+}
+
+QString Serializer::SerializerPrivate::sanitizeString( QString str )
+{
+  str.replace( QLatin1String( "\\" ), QLatin1String( "\\\\" ) );
+
+  // escape unicode chars
+  QString result;
+  const ushort* unicode = str.utf16();
+  unsigned int i = 0;
+
+  while ( unicode[ i ] ) {
+    if ( unicode[ i ] < 128 ) {
+      result.append( QChar( unicode[ i ] ) );
+    }
+    else {
+      QString hexCode = QString::number( unicode[ i ], 16 ).rightJustified( 4,
+                                                           QLatin1Char('0') );
+
+      result.append( QLatin1String ("\\u") ).append( hexCode );
+    }
+    ++i;
+  }
+  str = result;
+
+  str.replace( QLatin1String( "\"" ), QLatin1String( "\\\"" ) );
+  str.replace( QLatin1String( "\b" ), QLatin1String( "\\b" ) );
+  str.replace( QLatin1String( "\f" ), QLatin1String( "\\f" ) );
+  str.replace( QLatin1String( "\n" ), QLatin1String( "\\n" ) );
+  str.replace( QLatin1String( "\r" ), QLatin1String( "\\r" ) );
+  str.replace( QLatin1String( "\t" ), QLatin1String( "\\t" ) );
+
+  return QString( QLatin1String( "\"%1\"" ) ).arg( str );
+}
+
+Serializer::Serializer()
+  : d( new SerializerPrivate )
+{
+}
+
+Serializer::~Serializer() {
+  delete d;
+}
+
+void Serializer::serialize( const QVariant& v, QIODevice* io, bool* ok)
+{
+  Q_ASSERT( io );
+  *ok = true;
+
+  if (!io->isOpen()) {
+    if (!io->open(QIODevice::WriteOnly)) {
+      d->errorMessage = QLatin1String("Error opening device");
+      *ok = false;
+      return;
+    }
+  }
+
+  if (!io->isWritable()) {
+    d->errorMessage = QLatin1String("Device is not readable");
+    io->close();
+    *ok = false;
+    return;
+  }
+
+  const QByteArray str = serialize( v, ok);
+  if (*ok && (io->write(str) != str.count())) {
+    *ok = false;
+    d->errorMessage = QLatin1String("Something went wrong while writing to IO device");
+  }
+}
+
+QByteArray Serializer::serialize( const QVariant &v)
+{
+  bool ok;
+
+  return serialize(v, &ok);
+}
+
+QByteArray Serializer::serialize( const QVariant &v, bool *ok)
+{
+  bool _ok = true;
+  d->errorMessage.clear();
+
+  if (ok) {
+    *ok = true;
+  } else {
+    ok = &_ok;
+  }
+
+  return d->serialize(v, ok);
+}
+
+void QJson::Serializer::allowSpecialNumbers(bool allow) {
+  d->specialNumbersAllowed = allow;
+}
+
+bool QJson::Serializer::specialNumbersAllowed() const {
+  return d->specialNumbersAllowed;
+}
+
+void QJson::Serializer::setIndentMode(IndentMode mode) {
+  d->indentMode = mode;
+}
+
+void QJson::Serializer::setDoublePrecision(int precision) {
+  d->doublePrecision = precision;
+}
+
+IndentMode QJson::Serializer::indentMode() const {
+  return d->indentMode;
+}
+
+QString QJson::Serializer::errorMessage() const {
+  return d->errorMessage;
+}
+

src/webui/qjson/serializer.h

@@ -0,0 +1,230 @@
+/* This file is part of qjson
+  *
+  * Copyright (C) 2009 Till Adam <adam@kde.org>
+  *
+  * This library is free software; you can redistribute it and/or
+  * modify it under the terms of the GNU Lesser General Public
+  * License version 2.1, as published by the Free Software Foundation.
+  * 
+  *
+  * This library 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
+  * Lesser General Public License for more details.
+  *
+  * You should have received a copy of the GNU Lesser General Public License
+  * along with this library; see the file COPYING.LIB.  If not, write to
+  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+  * Boston, MA 02110-1301, USA.
+  */
+
+#ifndef QJSON_SERIALIZER_H
+#define QJSON_SERIALIZER_H
+
+#include "qjson_export.h"
+
+QT_BEGIN_NAMESPACE
+class QIODevice;
+class QString;
+class QVariant;
+QT_END_NAMESPACE
+
+namespace QJson {
+  /**
+   @brief How the indentation should work.
+   \verbatim
+   none (default) :
+            { "foo" : 0, "foo1" : 1, "foo2" : [ { "bar" : 1, "foo" : 0, "foobar" : 0 }, { "bar" : 1, "foo" : 1, "foobar" : 1 } ], "foo3" : [ 1, 2, 3, 4, 5, 6 ] }
+  
+   compact :
+            {"foo":0,"foo1":1,"foo2":[{"bar":1,"foo":0,"foobar":0},{"bar":1,"foo":1,"foobar":1}],"foo3":[1,2,3,4,5,6]}
+  
+   minimum :
+            { "foo" : 0, "foo1" : 1, "foo2" : [
+              { "bar" : 1, "foo" : 0, "foobar" : 0 },
+              { "bar" : 1, "foo" : 1, "foobar" : 1 }
+             ], "foo3" : [
+              1,
+              2,
+              3,
+              4,
+              5,
+              6
+             ] }
+
+   medium :
+            {
+             "foo" : 0, "foo1" : 1, "foo2" : [
+              {
+               "bar" : 1, "foo" : 0, "foobar" : 0
+              },
+              {
+               "bar" : 1, "foo" : 1, "foobar" : 1
+              }
+             ], "foo3" : [
+              1,
+              2,
+              3,
+              4,
+              5,
+              6
+             ]
+            }
+
+   full :
+            {
+             "foo" : 0,
+             "foo1" : 1,
+             "foo2" : [
+              {
+               "bar" : 1,
+               "foo" : 0,
+               "foobar" : 0
+              },
+              {
+               "bar" : 1,
+               "foo" : 1,
+               "foobar" : 1
+              }
+             ],
+             "foo3" : [
+              1,
+              2,
+              3,
+              4,
+              5,
+              6
+             ]
+            }
+
+  
+   \endverbatim
+  */
+  enum IndentMode {
+    IndentNone,
+    IndentCompact,
+    IndentMinimum,
+    IndentMedium,
+    IndentFull
+  };
+  /**
+  * @brief Main class used to convert QVariant objects to JSON data.
+  *
+  * QVariant objects are converted to a string containing the JSON data.
+  *
+  *
+  * Usage:
+  *
+  * \code
+  * QVariantList people;
+  *
+  * QVariantMap bob;
+  * bob.insert("Name", "Bob");
+  * bob.insert("Phonenumber", 123);
+  *
+  * QVariantMap alice;
+  * alice.insert("Name", "Alice");
+  * alice.insert("Phonenumber", 321);
+  *
+  * people << bob << alice;
+  *
+  * QJson::Serializer serializer;
+  * bool ok;
+  * QByteArray json = serializer.serialize(people, &ok);
+  *
+  * if (ok) {
+  *   qDebug() << json;
+  * } else {
+  *   qCritical() << "Something went wrong:" << serializer.errorMessage();
+  * }
+  * \endcode
+  *
+  * The output will be:
+  *
+  * \code
+  *  "[ { "Name" : "Bob", "Phonenumber" : 123 },
+  *     { "Name" : "Alice", "Phonenumber" : 321 } ]"
+  * \endcode
+  *
+  * It's possible to tune the indentation level of the resulting string. \sa setIndentMode
+  */
+  class QJSON_EXPORT Serializer {
+  public:
+    Serializer();
+    ~Serializer();
+
+     /**
+      * This method generates a textual JSON representation and outputs it to the
+      * passed in I/O Device.
+      * @param variant The JSON document in its in-memory representation as generated by the
+      * parser.
+      * @param out Input output device
+      * @param ok if a conversion error occurs, *ok is set to false; otherwise *ok is set to true
+      */
+    void serialize( const QVariant& variant, QIODevice* out, bool* ok);
+
+    /**
+      * This is a method provided for convenience. It turns the passed in in-memory
+      * representation of the JSON document into a textual one, which is returned.
+      * If the returned string is empty, the document was empty. If it was null, there
+      * was a parsing error.
+      *
+      * @param variant The JSON document in its in-memory representation as generated by the
+      * parser.
+      *
+      * \deprecated This method is going to be removed with the next major release of QJson.
+      */
+    QByteArray serialize( const QVariant& variant);
+
+    /**
+      * This is a method provided for convenience. It turns the passed in in-memory
+      * representation of the JSON document into a textual one, which is returned.
+      * If the returned string is empty, the document was empty. If it was null, there
+      * was a parsing error.
+      *
+      * @param variant The JSON document in its in-memory representation as generated by the
+      * parser.
+      * @param ok if a conversion error occurs, *ok is set to false; otherwise *ok is set to true
+      */
+    QByteArray serialize( const QVariant& variant, bool *ok);
+
+    /**
+     * Allow or disallow writing of NaN and/or Infinity (as an extension to QJson)
+     */
+    void allowSpecialNumbers(bool allow);
+
+    /**
+     * Is Nan and/or Infinity allowed?
+     */
+    bool specialNumbersAllowed() const;
+
+    /**
+     * set output indentation mode as defined in QJson::IndentMode
+     */
+    void setIndentMode(IndentMode mode = QJson::IndentNone);
+
+
+    /**
+    * set double precision used while converting Double
+    * \sa QByteArray::number
+    */
+    void setDoublePrecision(int precision);
+
+    /**
+     * Returns one of the indentation modes defined in QJson::IndentMode
+     */
+    IndentMode indentMode() const;
+
+    /**
+     * Returns the error message
+     */
+    QString errorMessage() const;
+
+  private:
+    Q_DISABLE_COPY(Serializer)
+    class SerializerPrivate;
+    SerializerPrivate* const d;
+  };
+}
+
+#endif // QJSON_SERIALIZER_H

src/webui/qjson/stack.hh

@@ -0,0 +1,133 @@
+/* A Bison parser, made by GNU Bison 2.7.  */
+
+/* Stack handling for Bison parsers in C++
+   
+      Copyright (C) 2002-2012 Free Software Foundation, Inc.
+   
+   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, either version 3 of the License, or
+   (at your option) any later version.
+   
+   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, see <http://www.gnu.org/licenses/>.  */
+
+/* As a special exception, you may create a larger work that contains
+   part or all of the Bison parser skeleton and distribute that work
+   under terms of your choice, so long as that work isn't itself a
+   parser generator using the skeleton or a modified version thereof
+   as a parser skeleton.  Alternatively, if you modify or redistribute
+   the parser skeleton itself, you may (at your option) remove this
+   special exception, which will cause the skeleton and the resulting
+   Bison output files to be licensed under the GNU General Public
+   License without this special exception.
+   
+   This special exception was added by the Free Software Foundation in
+   version 2.2 of Bison.  */
+
+/**
+ ** \file stack.hh
+ ** Define the yy::stack class.
+ */
+
+#ifndef YY_YY_STACK_HH_INCLUDED
+# define YY_YY_STACK_HH_INCLUDED
+
+# include <deque>
+
+
+namespace yy {
+/* Line 34 of stack.hh  */
+#line 47 "stack.hh"
+  template <class T, class S = std::deque<T> >
+  class stack
+  {
+  public:
+    // Hide our reversed order.
+    typedef typename S::reverse_iterator iterator;
+    typedef typename S::const_reverse_iterator const_iterator;
+
+    stack () : seq_ ()
+    {
+    }
+
+    stack (unsigned int n) : seq_ (n)
+    {
+    }
+
+    inline
+    T&
+    operator [] (unsigned int i)
+    {
+      return seq_[i];
+    }
+
+    inline
+    const T&
+    operator [] (unsigned int i) const
+    {
+      return seq_[i];
+    }
+
+    inline
+    void
+    push (const T& t)
+    {
+      seq_.push_front (t);
+    }
+
+    inline
+    void
+    pop (unsigned int n = 1)
+    {
+      for (; n; --n)
+        seq_.pop_front ();
+    }
+
+    inline
+    unsigned int
+    height () const
+    {
+      return seq_.size ();
+    }
+
+    inline const_iterator begin () const { return seq_.rbegin (); }
+    inline const_iterator end () const { return seq_.rend (); }
+
+  private:
+    S seq_;
+  };
+
+  /// Present a slice of the top of a stack.
+  template <class T, class S = stack<T> >
+  class slice
+  {
+  public:
+    slice (const S& stack, unsigned int range)
+      : stack_ (stack)
+      , range_ (range)
+    {
+    }
+
+    inline
+    const T&
+    operator [] (unsigned int i) const
+    {
+      return stack_[range_ - i];
+    }
+
+  private:
+    const S& stack_;
+    unsigned int range_;
+  };
+
+} // yy
+/* Line 116 of stack.hh  */
+#line 132 "stack.hh"
+
+#endif /* !YY_YY_STACK_HH_INCLUDED  */

src/webui/webui.pri

@@ -8,7 +8,8 @@ HEADERS += $$PWD/httpserver.h \
            $$PWD/prefjson.h \
            $$PWD/httpheader.h \
            $$PWD/httprequestheader.h \
-           $$PWD/httpresponseheader.h
+           $$PWD/httpresponseheader.h \
+           $$PWD/jsonutils.h
 
 SOURCES += $$PWD/httpserver.cpp \
            $$PWD/httpconnection.cpp \
@@ -20,4 +21,9 @@ SOURCES += $$PWD/httpserver.cpp \
            $$PWD/httprequestheader.cpp \
            $$PWD/httpresponseheader.cpp
 
+# QJson JSON parser/serializer for using with Qt4
+lessThan(QT_MAJOR_VERSION, 5) {
+  include(qjson/qjson.pri)
+}
+
 RESOURCES += $$PWD/webui.qrc