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Automatically convert JSON data into C language structs or cJSON object code for parsing JSON in C/C++ projects.
Manually writing JSON parsing structs for C/C++ projects is tedious and error-prone. This tool takes standard JSON strings as input and automatically generates C language struct definitions or cJSON library object construction code that can be directly embedded into your project. It accurately maps JSON key-value pairs to C data types, such as mapping strings to char*, numbers to int/double, and arrays to a pointer plus a count field.
How does the JSON to C struct converter handle arrays?
The tool generates two fields for each JSON array: an element pointer and a count variable. For example, a tags array will output `char** tags; int tags_count;`. You will need to manage the memory manually.
What if the input JSON format is incorrect?
The conversion will fail. Please check the validity of your JSON. Ensure that brackets match, quotes are closed, and consider using an online validator to preprocess it.
Please ensure the input is valid JSON. The generated structs require manual dynamic memory handling. The cJSON code must be used in conjunction with the cJSON library, and you must call cJSON_Delete() to avoid memory leaks. Complex types may require minor tweaks to the generated code.
For embedded development, it is recommended to prioritize generating cJSON code over structs, as cJSON already handles dynamic typing and memory. A typical input like {"sensor":{"id":1,"value":25.5}} will output a call chain including cJSON_CreateObject() and cJSON_AddNumberToObject(), which can be directly integrated into your firmware's parsing logic.
