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Diffstat (limited to 'common/json.h')
| -rw-r--r-- | common/json.h | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/common/json.h b/common/json.h new file mode 100644 index 0000000000..3b219993e7 --- /dev/null +++ b/common/json.h @@ -0,0 +1,166 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * 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. + * + */ + +/* + * Files JSON.h and JSONValue.h part of the SimpleJSON Library - https://github.com/MJPA/SimpleJSON + * + * Copyright (C) 2010 Mike Anchor + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef COMMON_JSON_H +#define COMMON_JSON_H + +#include "common/array.h" +#include "common/hashmap.h" +#include "common/hash-str.h" +#include "common/str.h" + +// Win32 incompatibilities +#if defined(WIN32) && !defined(__GNUC__) +static inline bool isnan(double x) { + return x != x; +} + +static inline bool isinf(double x) { + return !isnan(x) && isnan(x - x); +} +#endif + +// Simple function to check a string 's' has at least 'n' characters +static inline bool simplejson_wcsnlen(const char *s, size_t n) { + if (s == 0) + return false; + + const char *save = s; + while (n-- > 0) { + if (*(save++) == 0) return false; + } + + return true; +} + +namespace Common { + +// Custom types +class JSONValue; +typedef Array<JSONValue*> JSONArray; +typedef HashMap<String, JSONValue*> JSONObject; + +class JSON; + +enum JSONType { JSONType_Null, JSONType_String, JSONType_Bool, JSONType_Number, JSONType_IntegerNumber, JSONType_Array, JSONType_Object }; + +class JSONValue { + friend class JSON; + +public: + JSONValue(/*NULL*/); + JSONValue(const char *charValue); + JSONValue(const String &stringValue); + JSONValue(bool boolValue); + JSONValue(double numberValue); + JSONValue(long long int numberValue); + JSONValue(const JSONArray &arrayValue); + JSONValue(const JSONObject &objectValue); + JSONValue(const JSONValue &source); + ~JSONValue(); + + bool isNull() const; + bool isString() const; + bool isBool() const; + bool isNumber() const; + bool isIntegerNumber() const; + bool isArray() const; + bool isObject() const; + + const String &asString() const; + bool asBool() const; + double asNumber() const; + long long int asIntegerNumber() const; + const JSONArray &asArray() const; + const JSONObject &asObject() const; + + size_t countChildren() const; + bool hasChild(size_t index) const; + JSONValue *child(size_t index); + bool hasChild(const char *name) const; + JSONValue *child(const char *name); + Array<String> objectKeys() const; + + String stringify(bool const prettyprint = false) const; +protected: + static JSONValue *parse(const char **data); + +private: + static String stringifyString(const String &str); + String stringifyImpl(size_t const indentDepth) const; + static String indent(size_t depth); + + JSONType _type; + + union { + bool _boolValue; + double _numberValue; + long long int _integerValue; + String *_stringValue; + JSONArray *_arrayValue; + JSONObject *_objectValue; + }; + +}; + +class JSON { + friend class JSONValue; + +public: + static JSONValue *parse(const char *data); + static String stringify(const JSONValue *value); +protected: + static bool skipWhitespace(const char **data); + static bool extractString(const char **data, String &str); + static double parseInt(const char **data); + static double parseDecimal(const char **data); +private: + JSON(); +}; + +} // End of namespace Common + +#endif |