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JsonWriter.h
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1 /*
2  * This library is free software; you can redistribute it and/or
3  * modify it under the terms of the GNU Lesser General Public
4  * License as published by the Free Software Foundation; either
5  * version 2.1 of the License, or (at your option) any later version.
6  *
7  * This library is distributed in the hope that it will be useful,
8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
10  * Lesser General Public License for more details.
11  *
12  * You should have received a copy of the GNU Lesser General Public
13  * License along with this library; if not, write to the Free Software
14  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
15  *
16  * JsonWriter.h
17  * Serialize JSON data.
18  * Copyright (C) 2012 Simon Newton
19  */
20 
29 #ifndef INCLUDE_OLA_WEB_JSONWRITER_H_
30 #define INCLUDE_OLA_WEB_JSONWRITER_H_
31 
32 #include <ola/base/Macro.h>
33 #include <ola/web/Json.h>
34 #include <stdint.h>
35 #include <ostream>
36 #include <string>
37 
38 namespace ola {
39 namespace web {
40 
51  public:
57  static void Write(std::ostream *output, const JsonValue &value);
58 
63  static std::string AsString(const JsonValue &value);
64 
68  void Visit(const JsonString &value);
69  void Visit(const JsonBool &value);
70  void Visit(const JsonNull &value);
71  void Visit(const JsonRawValue &value);
72  void Visit(const JsonObject &value);
73  void Visit(const JsonArray &value);
74  void Visit(const JsonUInt &value);
75  void Visit(const JsonUInt64 &value);
76  void Visit(const JsonInt &value);
77  void Visit(const JsonInt64 &value);
78  void Visit(const JsonDouble &value);
79 
80  void VisitProperty(const std::string &property, const JsonValue &value);
81 
86  private:
87  std::ostream *m_output;
88  unsigned int m_indent;
89  std::string m_separator;
90 
91  explicit JsonWriter(std::ostream *output)
92  : m_output(output),
93  m_indent(0),
94  m_separator("") {
95  }
96 
100  static const unsigned int DEFAULT_INDENT = 2;
101 };
103 } // namespace web
104 } // namespace ola
105 #endif // INCLUDE_OLA_WEB_JSONWRITER_H_
The base class for JSON values.
Definition: Json.h:119
A signed 64bit int value.
Definition: Json.h:577
An unsigned 32bit int value.
Definition: Json.h:379
A raw value, useful if you want to cheat.
Definition: Json.h:842
static std::string AsString(const JsonValue &value)
Get the string representation of the JsonValue.
Definition: JsonWriter.cpp:38
A class used to visit Json values within a JsonObject.
Definition: Json.h:1215
static void Write(std::ostream *output, const JsonValue &value)
Write the string representation of the JsonValue to a ostream.
Definition: JsonWriter.cpp:33
The null value.
Definition: Json.h:811
A JSON object. JSON Objects are key : value mappings, similar to dictionaries in Python.
Definition: Json.h:890
A Bool value.
Definition: Json.h:768
An array of JSON values. Arrays in JSON can contain values of different types.
Definition: Json.h:1033
A string value.
Definition: Json.h:279
An unsigned 64bit int value.
Definition: Json.h:510
A signed 32bit int value.
Definition: Json.h:445
Helper macros.
A double value.
Definition: Json.h:649
The namespace containing all OLA symbols.
Definition: Credentials.cpp:44
A class to serialize a JSONValue to text.
Definition: JsonWriter.h:49
The const interface for the JsonValueVisitor class.
Definition: Json.h:99
Basic data types used to represent elements in a JSON document.