1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/graphite2/src/inc/json.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,165 @@
1.4 +/* GRAPHITE2 LICENSING
1.5 +
1.6 + Copyright 2011, SIL International
1.7 + All rights reserved.
1.8 +
1.9 + This library is free software; you can redistribute it and/or modify
1.10 + it under the terms of the GNU Lesser General Public License as published
1.11 + by the Free Software Foundation; either version 2.1 of License, or
1.12 + (at your option) any later version.
1.13 +
1.14 + This program is distributed in the hope that it will be useful,
1.15 + but WITHOUT ANY WARRANTY; without even the implied warranty of
1.16 + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1.17 + Lesser General Public License for more details.
1.18 +
1.19 + You should also have received a copy of the GNU Lesser General Public
1.20 + License along with this library in the file named "LICENSE".
1.21 + If not, write to the Free Software Foundation, 51 Franklin Street,
1.22 + Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
1.23 + internet at http://www.fsf.org/licenses/lgpl.html.
1.24 +
1.25 +Alternatively, the contents of this file may be used under the terms of the
1.26 +Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public
1.27 +License, as published by the Free Software Foundation, either version 2
1.28 +of the License or (at your option) any later version.
1.29 +*/
1.30 +// JSON pretty printer for graphite font debug output logging.
1.31 +// Created on: 15 Dec 2011
1.32 +// Author: Tim Eves
1.33 +
1.34 +#pragma once
1.35 +#include "inc/Main.h"
1.36 +#include <cassert>
1.37 +#include <stdio.h>
1.38 +
1.39 +namespace graphite2 {
1.40 +
1.41 +class json
1.42 +{
1.43 + // Prevent copying
1.44 + json(const json &);
1.45 + json & operator = (const json &);
1.46 +
1.47 + typedef void (*_context_t)(json &);
1.48 + class _null_t {};
1.49 +
1.50 + FILE * const _stream;
1.51 + char _contexts[128], // context stack
1.52 + * _context, // current context (top of stack)
1.53 + * _flatten; // if !0 points to context above which
1.54 + // pretty printed output should occur.
1.55 +
1.56 + void context(const char current) throw();
1.57 + void indent(const int d=0) throw();
1.58 + void push_context(const char, const char) throw();
1.59 + void pop_context() throw();
1.60 +
1.61 +public:
1.62 + class closer;
1.63 +
1.64 + typedef const char * string;
1.65 + typedef double number;
1.66 + typedef long signed int integer;
1.67 + typedef bool boolean;
1.68 + static const _null_t null;
1.69 +
1.70 + static void flat(json &) throw();
1.71 + static void close(json &) throw();
1.72 + static void object(json &) throw();
1.73 + static void array(json &) throw();
1.74 + static void item(json &) throw();
1.75 +
1.76 + json(FILE * stream) throw();
1.77 + ~json() throw ();
1.78 +
1.79 + FILE * stream() const throw();
1.80 +
1.81 + json & operator << (string) throw();
1.82 + json & operator << (number) throw();
1.83 + json & operator << (integer) throw();
1.84 + json & operator << (long unsigned int d) throw();
1.85 + json & operator << (boolean) throw();
1.86 + json & operator << (_null_t) throw();
1.87 + json & operator << (_context_t) throw();
1.88 +
1.89 + operator bool() const throw();
1.90 + bool good() const throw();
1.91 + bool eof() const throw();
1.92 +
1.93 + CLASS_NEW_DELETE;
1.94 +};
1.95 +
1.96 +class json::closer
1.97 +{
1.98 + // Prevent copying.
1.99 + closer(const closer &);
1.100 + closer & operator = (const closer &);
1.101 +
1.102 + json * const _j;
1.103 +public:
1.104 + closer(json * const j) : _j(j) {}
1.105 + ~closer() throw() { if (_j) *_j << close; }
1.106 +};
1.107 +
1.108 +inline
1.109 +json::json(FILE * s) throw()
1.110 +: _stream(s), _context(_contexts), _flatten(0)
1.111 +{
1.112 + if (good())
1.113 + fflush(s);
1.114 +}
1.115 +
1.116 +
1.117 +inline
1.118 +json::~json() throw ()
1.119 +{
1.120 + while (_context > _contexts) pop_context();
1.121 +}
1.122 +
1.123 +inline
1.124 +FILE * json::stream() const throw() { return _stream; }
1.125 +
1.126 +
1.127 +inline
1.128 +json & json::operator << (json::_context_t ctxt) throw()
1.129 +{
1.130 + ctxt(*this);
1.131 + return *this;
1.132 +}
1.133 +
1.134 +inline
1.135 +json & operator << (json & j, signed char d) throw() { return j << json::integer(d); }
1.136 +
1.137 +inline
1.138 +json & operator << (json & j, short signed int d) throw() { return j << json::integer(d); }
1.139 +
1.140 +inline
1.141 +json & operator << (json & j, signed int d) throw() { return j << json::integer(d); }
1.142 +
1.143 +inline
1.144 +json & operator << (json & j, unsigned char d) throw() { return j << json::integer(d); }
1.145 +
1.146 +inline
1.147 +json & operator << (json & j, short unsigned int d) throw() { return j << json::integer(d); }
1.148 +
1.149 +inline
1.150 +json & operator << (json & j, unsigned int d) throw() { return j << json::integer(d); }
1.151 +
1.152 +inline
1.153 +json & operator << (json & j, char c) throw ()
1.154 +{
1.155 + const char str[2] = {c,0};
1.156 + return j << str;
1.157 +}
1.158 +
1.159 +inline
1.160 +json::operator bool() const throw() { return good(); }
1.161 +
1.162 +inline
1.163 +bool json::good() const throw() { return _stream && ferror(_stream) == 0; }
1.164 +
1.165 +inline
1.166 +bool json::eof() const throw() { return feof(_stream) != 0; }
1.167 +
1.168 +} // namespace graphite2
