cjson_demo

examples/cjson_demo/.gitignore

@@ -0,0 +1,6 @@
+
+dist
+build
+.config.mk
+.flash.conf.json
+

examples/cjson_demo/SConstruct

@@ -0,0 +1,4 @@
+from pathlib import Path
+import os
+with open(str(Path(os.getcwd())/'..'/'..'/'tools'/'scons'/'project.py')) as f:
+    exec(f.read())

examples/cjson_demo/config_defaults.mk

@@ -0,0 +1,8 @@
+# unix
+# CONFIG_TOOLCHAIN_PATH="/opt/gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf/bin"
+# win
+# CONFIG_TOOLCHAIN_PATH="..\\gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf\\bin"
+
+# CONFIG_TOOLCHAIN_PREFIX="arm-linux-gnueabihf-"
+
+CONFIG_CJSON_ENABLED=y

examples/cjson_demo/main/SConstruct

@@ -0,0 +1,33 @@
+# project_root/src/SConscript
+import os
+# Import the environment from the SConstruct file
+Import('env')
+with open(env['PROJECT_TOOL_S']) as f:
+    exec(f.read())
+
+
+SRCS = Glob('src/*.c*')
+INCLUDE = [ADir('include'), ADir('.')]
+PRIVATE_INCLUDE = []
+REQUIREMENTS = ['pthread', 'cjson']
+STATIC_LIB = []
+DYNAMIC_LIB = []
+DEFINITIONS = []
+DEFINITIONS_PRIVATE = []
+LDFLAGS = []
+LINK_SEARCH_PATH = []
+
+
+env['COMPONENTS'].append({'target':env['PROJECT_NAME'],
+                          'SRCS':SRCS,
+                          'INCLUDE':INCLUDE,
+                          'PRIVATE_INCLUDE':PRIVATE_INCLUDE,
+                          'REQUIREMENTS':REQUIREMENTS,
+                          'STATIC_LIB':STATIC_LIB,
+                          'DYNAMIC_LIB':DYNAMIC_LIB,
+                          'DEFINITIONS':DEFINITIONS,
+                          'DEFINITIONS_PRIVATE':DEFINITIONS_PRIVATE,
+                          'LDFLAGS':LDFLAGS,
+                          'LINK_SEARCH_PATH':LINK_SEARCH_PATH,
+                          'REGISTER':'project'
+                          })

examples/cjson_demo/main/include/main.h

@@ -0,0 +1,3 @@
+#pragma once
+
+

examples/cjson_demo/main/src/main.c

@@ -0,0 +1,59 @@
+/*
+ * SPDX-FileCopyrightText: 2024 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include "cJSON.h"
+
+int main() {
+    // Create a JSON object
+    cJSON *root = cJSON_CreateObject();
+    cJSON_AddStringToObject(root, "name", "John Doe");
+    cJSON_AddNumberToObject(root, "age", 30);
+    cJSON_AddBoolToObject(root, "employed", 1);
+
+    // Create an array and add it to the JSON object
+    cJSON *skills = cJSON_CreateArray();
+    cJSON_AddItemToArray(skills, cJSON_CreateString("C"));
+    cJSON_AddItemToArray(skills, cJSON_CreateString("C++"));
+    cJSON_AddItemToArray(skills, cJSON_CreateString("Python"));
+    cJSON_AddItemToObject(root, "skills", skills);
+
+    // Convert the JSON object to a string and print it
+    char *json_string = cJSON_Print(root);
+    printf("Generated JSON:\n%s\n", json_string);
+
+    // Parse the JSON string
+    cJSON *parsed_root = cJSON_Parse(json_string);
+    if (parsed_root == NULL) {
+        fprintf(stderr, "Error parsing JSON string.\n");
+    } else {
+        // Get data from the parsed JSON object
+        cJSON *name = cJSON_GetObjectItem(parsed_root, "name");
+        cJSON *age = cJSON_GetObjectItem(parsed_root, "age");
+        cJSON *employed = cJSON_GetObjectItem(parsed_root, "employed");
+        cJSON *parsed_skills = cJSON_GetObjectItem(parsed_root, "skills");
+
+        // Print the parsed data
+        printf("Parsed JSON:\n");
+        printf("Name: %s\n", name->valuestring);
+        printf("Age: %d\n", age->valueint);
+        printf("Employed: %s\n", employed->valueint ? "true" : "false");
+
+        printf("Skills:\n");
+        int skill_count = cJSON_GetArraySize(parsed_skills);
+        for (int i = 0; i < skill_count; i++) {
+            cJSON *skill = cJSON_GetArrayItem(parsed_skills, i);
+            printf("  - %s\n", skill->valuestring);
+        }
+    }
+
+    // Free memory
+    cJSON_Delete(root);
+    cJSON_Delete(parsed_root);
+    free(json_string);
+
+    return 0;
+}