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RapidJSON —— C++ 快速 JSON 解析器和生成器

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.