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slothxml - object serialization artifact for lazy man

slothxml is the sister of slothjson, a powerful tool kit used in object serialization and deserialization with full automation feature, based on rapidxml.

The following is the design of slothxml:

What is slothxml ?

Please refer to slothjson

Features

Please refer to slothjson

Usage

In the beginning, you need to add the following items to your project:

• rapidxml: refer to include/rapidxml, the fastest xml parser in the world
• slothxml: refer to include/slothxml.h and include/slothxml.cpp, the library of slothxml

That's all the dependency , very easy, isn't it ? ^_^

Then, you need to take a few seconds to know the most important interfaces of slothxml:

namespace slothxml
{
    // encode C++ object to xml string
    template<typename T>
    bool encode(const T& obj_val, const char * root_name, std::string& xml_val);

    // decode xml string to C++ object
    template<typename T>
    bool decode(const std::string& xml_val, const char * root_name, T& obj_val);
}

namespace slothxml
{
    // encode C++ object to xml string, then dump it to file
    template<typename T>
    bool dump(const T& obj_val, const char * root_name, const char * path);

    // load xml string from file, then decode it to C++ object
    template<typename T>
    bool load(const char * path, const char * root_name, T& obj_val);
};

Argument root_name is used to set the name of xml root:

I believe the interfaces metioned above can meet most of the requirements.

For example , write the schema named fxxx_gfw.json:

{
    "structs": 
    [
        {
            "type": "fxxx_gfw_t",
            "members": 
            [
                ["bool", "bool_val", "true"],
                ["int8_t", "int8_val", "'a'"],
                ["int32_t", "int32_val", "-111111"],
                ["uint64_t", "uint64_val", "0xffff"],
                ["double", "double_val", "111111.111111"],
                ["string", "str_val", "test"],
                ["[int32_t]", "vec_val"],
                ["{string}", "dict_val"]
            ]
        }
    ]
}

Run command line:

python generator/slothxml.py -f src/fxxx_gfw.json

It will generate fxxx_gfw.h and fxxx_gfw.cpp, which you need to add to your project.
Then you can code like this:

slothxml::fxxx_gfw_t obj_val;
// set the value of "obj_val"
......
// output as string
std::string xml_val;
bool rc = slothxml::encode(obj_val, "object", xml_val);
// output as file
std::string path = "fxxx_gfw_t.xml";
bool rc = slothxml::dump(obj_val, "object", path);

If you don't want to serialize all fields, code like this:

obj_val.skip_dict_val(); // call "skip_xxx"

The same as deserialize:

// load from string
std::string xml_val;
// set the value of "xml_val"
......
slothxml::fxxx_gfw_t obj_val;
bool rc = slothxml::decode(xml_val, "object", obj_val);

// load from file
std::string path = "fxxx_gfw_t.xml";
slothxml::fxxx_gfw_t obj_val;
bool rc = slothxml::load(path, "object", obj_val);

After deserialized, if you need to know whether a field is in XML or not, code like this:

if (obj_val.xml_has_dict_val()) // call "xml_has_xxx()"
{
     ......
}

That's all about the usage, simple & stupid, isn't it ?

Platforms

Please refer to slothjson

Details

slothxml and slothjson share the same design, same schema. The only difference between them is the name of code generator, one is slothjson.py, another is slothxml.py.

You can get all details from here.

License

slothxml is licensed under New BSD License, a very flexible license to use.

Author

• chengzhuo (jobs, yao050421103@163.com)

More

• Yet Another Schema - yas
• Sister - slothjson
• Scalable & Efficient Serialization Library - rawbuf
• High-performance Distributed Storage - huststore