/* GRAPHITE2 LICENSING Copyright 2011, SIL International All rights reserved. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of 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 Lesser General Public License for more details. You should also have received a copy of the GNU Lesser General Public License along with this library in the file named "LICENSE". If not, write to the Free Software Foundation, 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA or visit their web page on the internet at http://www.fsf.org/licenses/lgpl.html. Alternatively, the contents of this file may be used under the terms of the Mozilla Public License (http://mozilla.org/MPL) or 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. */ // JSON pretty printer for graphite font debug output logging. // Created on: 15 Dec 2011 // Author: Tim Eves #pragma once #include "inc/Main.h" #include #include #include "inc/List.h" namespace graphite2 { class json { // Prevent copying json(const json &); json & operator = (const json &); typedef void (*_context_t)(json &); class _null_t {}; FILE * const _stream; char _contexts[128], // context stack * _context, // current context (top of stack) * _flatten; // if !0 points to context above which // pretty printed output should occur. Vector _env; void context(const char current) throw(); void indent(const int d=0) throw(); void push_context(const char, const char) throw(); void pop_context() throw(); public: class closer; typedef const char * string; typedef double number; typedef long signed int integer; typedef bool boolean; static const _null_t null; void setenv(unsigned int index, void *val) { _env.reserve(index + 1); if (index >= _env.size()) _env.insert(_env.end(), _env.size() - index + 1, 0); _env[index] = val; } void *getenv(unsigned int index) const { return _env[index]; } const Vector &getenvs() const { return _env; } static void flat(json &) throw(); static void close(json &) throw(); static void object(json &) throw(); static void array(json &) throw(); static void item(json &) throw(); json(FILE * stream) throw(); ~json() throw (); FILE * stream() const throw(); json & operator << (string) throw(); json & operator << (number) throw(); json & operator << (integer) throw(); json & operator << (long unsigned int d) throw(); json & operator << (boolean) throw(); json & operator << (_null_t) throw(); json & operator << (_context_t) throw(); operator bool() const throw(); bool good() const throw(); bool eof() const throw(); CLASS_NEW_DELETE; }; class json::closer { // Prevent copying. closer(const closer &); closer & operator = (const closer &); json * const _j; public: closer(json * const j) : _j(j) {} ~closer() throw() { if (_j) *_j << close; } }; inline json::json(FILE * s) throw() : _stream(s), _context(_contexts), _flatten(0) { if (good()) fflush(s); } inline json::~json() throw () { while (_context > _contexts) pop_context(); } inline FILE * json::stream() const throw() { return _stream; } inline json & json::operator << (json::_context_t ctxt) throw() { ctxt(*this); return *this; } inline json & operator << (json & j, signed char d) throw() { return j << json::integer(d); } inline json & operator << (json & j, short signed int d) throw() { return j << json::integer(d); } inline json & operator << (json & j, signed int d) throw() { return j << json::integer(d); } inline json & operator << (json & j, unsigned char d) throw() { return j << json::integer(d); } inline json & operator << (json & j, short unsigned int d) throw() { return j << json::integer(d); } inline json & operator << (json & j, unsigned int d) throw() { return j << json::integer(d); } inline json & operator << (json & j, char c) throw () { const char str[2] = {c,0}; return j << str; } inline json::operator bool() const throw() { return good(); } inline bool json::good() const throw() { return _stream && ferror(_stream) == 0; } inline bool json::eof() const throw() { return feof(_stream) != 0; } } // namespace graphite2