38a22d9cd8
This change how the json formatter handle float and adds double support. float and double conversion will throw exceptions when try to convert inf or nan. It also contains tests for both float and double including inf, -inf and nan for both float and double. Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
145 lines
3.6 KiB
C++
145 lines
3.6 KiB
C++
/*
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* This file is open source software, licensed to you under the terms
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* of the Apache License, Version 2.0 (the "License"). See the NOTICE file
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* distributed with this work for additional information regarding copyright
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* ownership. You may not use this file except in compliance with the License.
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*
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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/*
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* Copyright 2015 Cloudius Systems
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*/
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#ifndef FORMATTER_HH_
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#define FORMATTER_HH_
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#include <string>
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#include <vector>
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#include <time.h>
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#include <sstream>
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#include "core/sstring.hh"
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namespace json {
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struct jsonable;
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typedef struct tm date_time;
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/**
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* The formatter prints json values in a json format
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* it overload to_json method for each of the supported format
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* all to_json parameters are passed as a pointer
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*/
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class formatter {
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public:
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/**
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* return a json formated string
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* @param str the string to format
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* @return the given string in a json format
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*/
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static sstring to_json(const sstring& str);
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/**
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* return a json formated int
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* @param n the int to format
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* @return the given int in a json format
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*/
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static sstring to_json(int n);
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/**
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* return a json formated long
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* @param n the long to format
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* @return the given long in a json format
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*/
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static sstring to_json(long n);
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/**
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* return a json formated float
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* @param n the float to format
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* @return the given float in a json format
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*/
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static sstring to_json(float f);
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/**
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* return a json formated double
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* @param d the double to format
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* @return the given double in a json format
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*/
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static sstring to_json(double d);
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/**
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* return a json formated char* (treated as string)
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* @param str the char* to foramt
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* @return the given char* in a json foramt
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*/
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static sstring to_json(const char* str);
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/**
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* return a json formated bool
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* @param d the bool to format
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* @return the given bool in a json format
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*/
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static sstring to_json(bool d);
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/**
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* return a json formated list of a given vector of params
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* @param vec the vector to format
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* @return the given vector in a json format
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*/
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template<typename T>
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static sstring to_json(const std::vector<T>& vec) {
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std::stringstream res;
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res << "[";
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bool first = true;
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for (auto i : vec) {
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if (first) {
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first = false;
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} else {
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res << ",";
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}
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res << to_json(i);
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}
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res << "]";
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return res.str();
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}
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/**
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* return a json formated date_time
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* @param d the date_time to format
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* @return the given date_time in a json format
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*/
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static sstring to_json(const date_time& d);
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/**
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* return a json formated json object
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* @param obj the date_time to format
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* @return the given json object in a json format
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*/
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static sstring to_json(const jsonable& obj);
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/**
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* return a json formated unsigned long
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* @param l unsigned long to format
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* @return the given unsigned long in a json format
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*/
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static sstring to_json(unsigned long l);
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private:
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static constexpr const char* TIME_FORMAT = "%a %b %d %I:%M:%S %Z %Y";
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};
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}
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#endif /* FORMATTER_HH_ */
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