原文：

RapidJSON —— C++ 快速 JSON 解析器和生成器

时间 2015-04-05 07:33:33  开源中国新闻原文  http://www.oschina.net/p/rapidjson

4月18日 武汉 源创会开始报名，送华为开发板

Rapidjson 是一个 C++ 的快速 JSON 解析器和生成器，使用 SAX/DOM 风格的 API 设计。

示例代码：

// rapidjson/example/simpledom/simpledom.cpp`
#include "rapidjson/document.h"
#include "rapidjson/writer.h"
#include "rapidjson/stringbuffer.h"
#include <iostream>
using namespace rapidjson;
int main() {
  // 1. Parse a JSON string into DOM.
  const char* json = "{\"project\":\"rapidjson\",\"stars\":10}";
  Document d;
  d.Parse(json);
  // 2. Modify it by DOM.
  Value& s = d["stars"];
  s.SetInt(s.GetInt() + 1);
  // 3. Stringify the DOM
  StringBuffer buffer;
  Writer<StringBuffer> writer(buffer);
  d.Accept(writer);
  // Output {"project":"rapidjson","stars":11}
  std::cout << buffer.GetString() << std::endl;
  return 0;
}

介绍 PPT 下载： http://www.oschina.net/doc/5711

主要特点：

• 体积小，功能全，提供 SAX 和 DOM 风格的 API，仅是 SAX 解析器只有百行代码
• 快速
• 无需依赖其他第三方库
• Compact. Each JSON value is 16 or 20 bytes for 32 or 64-bit machines respectively (excluding text string storage). With the custom memory allocator, parser allocates memory compactly during parsing.
• 完全兼容 RFC4627 ，支持 UTF-8, UTF-16 和 UTF-32.
• Support both in-situ parsing (directly decode strings into the source JSON text) and non-destructive parsing (decode strings into new buffers).
• Parse number to int/unsigned/int64_t/uint64_t/double depending on input
• 支持自定义内存分配。Also, the default memory pool allocator can also be supplied with a user buffer (such as a buffer allocated on user‘s heap or programme stack) to minimize allocation.