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nanoJSONc is a C-based event-driven architecture library for JSON parsing, making it easy to integrate with your project's logic.
Users can register callback functions to respond to specific events, such as key-value pairs within JSON objects or indices-values within JSON arrays, offering a highly customizable and efficient approach to JSON parsing. nanoJSONc is ideal for applications where tailored event handling is crucial to processing JSON data effectively.
- Event-Driven Architecture
- Lightweight - ~250 lines of code
- Robust—almost "crash proof"
- No Dependencies
- Memory-Efficient - No
malloc(3) - Simple API, Pure Functions, No side-effects
- Parses deeply nested & mixed JSON objects and arrays (See examples)
#include <nanojsonc/parser.h>
struct Person {
char *name;
int age;
};
static void callback(enum NanoJSONCError error, const char *const key, const char *const value, const char *const parentKey, void *object) {
struct Person *person = object;
if (strcmp(key, "name") == 0) (*person).name = strdup(value);
if (strcmp(key, "age") == 0) (*person).age = atoi(value);
}
int main(void) {
char *json = "{\"name\": \"John Doe\", \"age\": 25}";
struct Person person = (struct Person){0};
nanojsonc_parse_object(json, NULL, &person, callback);
printf("Name: %s, Age: %d", person.name, person.age); // Name: John Doe, Age: 25
free(person.name);
return 0;
}#include <nanojsonc/parser.h>
struct Hobby {
char *name;
struct Hobby *next;
};
static void callback(enum NanoJSONCError error, const char *const key, const char *const value, const char *const parentKey, void *object) {
struct Hobby **hobbies = object;
struct Hobby *hobby = malloc(sizeof(struct Hobby));
hobby->name = strdup(value);
hobby->next = NULL;
struct Hobby **cursor;
for (cursor = hobbies; *cursor; cursor = &(*cursor)->next);
*cursor = hobby;
}
int main(void) {
char *json = "[\"Reading\", \"Hiking\", \"Cooking\"]";
struct Hobby *hobbies = NULL;
nanojsonc_parse_array(json, "hobbies", &hobbies, callback);
for (struct Hobby **cursor = &hobbies; *cursor; cursor = &(*cursor)->next)
printf("%s ", (*cursor)->name); // Reading Hiking Cooking
return 0;
}vcpkg install nanojsonc
find_package(nanojsonc CONFIG REQUIRED)
target_link_libraries(main PRIVATE nanojsonc::nanojsonc)Configure CMake Options: vcpkg in CMake projects
-DCMAKE_TOOLCHAIN_FILE=<vcpkg-root>/scripts/buildsystems/vcpkg.cmake
If you receive malloc: nano zone, set environment variable MallocNanoZone=0
# First, tell CMake to find the package.
# Conan will install the packages so that CMake can find it:
find_package(nanojsonc)
# Then, link your executable or library with the corresponding package targets:
target_link_libraries(your_exe_or_lib_name nanojsonc::nanojsonc)Override find_package
set(as_subproject nanojsonc)
macro(find_package)
if(NOT "${ARG0}" IN_LIST as_subproject)
_find_package(${ARGV})
else()
add_subdirectory(${ARG0})
endif()
endmacro()For a complete demo of how to use nanoJSONc, please refer to the following
Production - Version 1.0.0
BSD 3-Clause License
- Copyright © 2023 Saad Shams
- Copyright © 2023 Open Source Patterns Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
