mirror of
https://github.com/Icinga/icinga2.git
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151 lines
4.4 KiB
C++
151 lines
4.4 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include "i2-base.h"
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#include <cJSON.h>
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using namespace icinga;
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Value Empty;
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/**
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* Checks whether the variant is empty.
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*
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* @returns true if the variant is empty, false otherwise.
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*/
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bool Value::IsEmpty(void) const
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{
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return (m_Value.type() == typeid(boost::blank));
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}
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/**
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* Checks whether the variant is scalar (i.e. not an object and not empty).
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*
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* @returns true if the variant is scalar, false otherwise.
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*/
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bool Value::IsScalar(void) const
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{
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return !IsEmpty() && !IsObject();
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}
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/**
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* Checks whether the variant is a non-null object.
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*
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* @returns true if the variant is a non-null object, false otherwise.
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*/
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bool Value::IsObject(void) const
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{
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return !IsEmpty() && (m_Value.type() == typeid(Object::Ptr));
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}
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/**
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* Converts a JSON object into a variant.
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*
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* @param json The JSON object.
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*/
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Value Value::FromJson(cJSON *json)
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{
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if (json->type == cJSON_Number)
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return json->valuedouble;
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else if (json->type == cJSON_String)
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return String(json->valuestring);
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else if (json->type == cJSON_True)
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return 1;
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else if (json->type == cJSON_False)
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return 0;
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else if (json->type == cJSON_Object)
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return Dictionary::FromJson(json);
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else if (json->type == cJSON_NULL)
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return Value();
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else
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BOOST_THROW_EXCEPTION(invalid_argument("Unsupported JSON type."));
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}
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/**
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* Serializes a variant into a string.
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*
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* @returns A string representing this variant.
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*/
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String Value::Serialize(void) const
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{
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cJSON *json = ToJson();
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char *jsonString;
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if (Application::IsDebugging())
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jsonString = cJSON_Print(json);
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else
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jsonString = cJSON_PrintUnformatted(json);
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cJSON_Delete(json);
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String result = jsonString;
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free(jsonString);
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return result;
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}
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/**
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* Serializes the variant.
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*
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* @returns A JSON object representing this variant.
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*/
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cJSON *Value::ToJson(void) const
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{
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if (m_Value.type() == typeid(long)) {
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return cJSON_CreateNumber(boost::get<long>(m_Value));
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} else if (m_Value.type() == typeid(double)) {
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return cJSON_CreateNumber(boost::get<double>(m_Value));
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} else if (m_Value.type() == typeid(String)) {
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return cJSON_CreateString(boost::get<String>(m_Value).CStr());
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} else if (m_Value.type() == typeid(Object::Ptr)) {
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if (IsObjectType<Dictionary>()) {
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Dictionary::Ptr dictionary = *this;
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return dictionary->ToJson();
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} else {
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Logger::Write(LogDebug, "base", "Ignoring unknown object while converting variant to JSON.");
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return cJSON_CreateNull();
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}
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} else if (m_Value.type() == typeid(boost::blank)) {
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return cJSON_CreateNull();
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} else {
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BOOST_THROW_EXCEPTION(runtime_error("Invalid variant type."));
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}
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}
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/**
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* Deserializes the string representation of a variant.
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*
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* @param jsonString A JSON string obtained from Value::Serialize
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* @returns The newly deserialized variant.
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*/
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Value Value::Deserialize(const String& jsonString)
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{
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cJSON *json = cJSON_Parse(jsonString.CStr());
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if (!json)
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BOOST_THROW_EXCEPTION(runtime_error("Invalid JSON String"));
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Value value = FromJson(json);
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cJSON_Delete(json);
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return value;
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}
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