1866091b3d
This is a migration of the basic json support taken from the osv/httpserver. The routes uses the json object to return errors in a json format. This also adds json_exception which has a constructor from an exception. Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
138 lines
3.5 KiB
C++
138 lines
3.5 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 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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constexpr static 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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