+

About

Parson is a lighweight json library written in C.

@@ -67,44 +56,44 @@

Here is a function, which prints basic commit info (date, sha and author) from a github repository.

-
void print_commits_info(const char *username, const char *repo) {
+
void print_commits_info(const char *username, const char *repo) {
     JSON_Value *root_value;
     JSON_Array *commits;
     JSON_Object *commit;
-    size_t i;
+    size_t i;
 
-    char curl_command[512];
-    char cleanup_command[256];
-    char output_filename[] = "commits.json";
+    char curl_command[512];
+    char cleanup_command[256];
+    char output_filename[] = "commits.json";
 
     /* it ain't pretty, but it's not a libcurl tutorial */
-    sprintf(curl_command, 
-        "curl -s \"https://api.github.com/repos/%s/%s/commits\" > %s",
+    sprintf(curl_command, 
+        "curl -s \"https://api.github.com/repos/%s/%s/commits\" > %s",
         username, repo, output_filename);
-    sprintf(cleanup_command, "rm -f %s", output_filename);
-    system(curl_command);
+    sprintf(cleanup_command, "rm -f %s", output_filename);
+    system(curl_command);
 
     /* parsing json and validating output */
-    root_value = json_parse_file(output_filename);
-    if (json_value_get_type(root_value) != JSONArray) {
-        system(cleanup_command);
+    root_value = json_parse_file(output_filename);
+    if (json_value_get_type(root_value) != JSONArray) {
+        system(cleanup_command);
         return;
     }
 
     /* getting array from root value and printing commit info */
-    commits = json_value_get_array(root_value);
-    printf("%-10.10s %-10.10s %s\n", "Date", "SHA", "Author");
-    for (i = 0; i < json_array_get_count(commits); i++) {
-        commit = json_array_get_object(commits, i);
-        printf("%.10s %.10s %s\n",
-               json_object_dotget_string(commit, "commit.author.date"),
-               json_object_get_string(commit, "sha"),
-               json_object_dotget_string(commit, "commit.author.name"));
+    commits = json_value_get_array(root_value);
+    printf("%-10.10s %-10.10s %s\n", "Date", "SHA", "Author");
+    for (i = 0; i < json_array_get_count(commits); i++) {
+        commit = json_array_get_object(commits, i);
+        printf("%.10s %.10s %s\n",
+               json_object_dotget_string(commit, "commit.author.date"),
+               json_object_get_string(commit, "sha"),
+               json_object_dotget_string(commit, "commit.author.name"));
     }
 
     /* cleanup code */
-    json_value_free(root_value);
-    system(cleanup_command);
+    json_value_free(root_value);
+    system(cleanup_command);
 }
 

 
@@ -125,22 +114,22 @@
 
 
In this example I'm using parson to save user information to a file and then load it and validate later.

 
-
void persistence_example(void) {
-    JSON_Value *schema = json_parse_string("{\"name\":\"\"}");
-    JSON_Value *user_data = json_parse_file("user_data.json");
-    char buf[256];
-    const char *name = NULL;
-    if (user_data == NULL || json_validate(schema, user_data) != JSONSuccess) {
-        puts("Enter your name:");
-        scanf("%s", buf);
-        user_data = json_value_init_object();
-        json_object_set_string(json_object(user_data), "name", buf);
-        json_serialize_to_file(user_data, "user_data.json");
+
void persistence_example(void) {
+    JSON_Value *schema = json_parse_string("{\"name\":\"\"}");
+    JSON_Value *user_data = json_parse_file("user_data.json");
+    char buf[256];
+    const char *name = NULL;
+    if (user_data == NULL || json_validate(schema, user_data) != JSONSuccess) {
+        puts("Enter your name:");
+        scanf("%s", buf);
+        user_data = json_value_init_object();
+        json_object_set_string(json_object(user_data), "name", buf);
+        json_serialize_to_file(user_data, "user_data.json");
     }
-    name = json_object_get_string(json_object(user_data), "name");
-    printf("Hello, %s.", name);
-    json_value_free(schema);
-    json_value_free(user_data);
+    name = json_object_get_string(json_object(user_data), "name");
+    printf("Hello, %s.", name);
+    json_value_free(schema);
+    json_value_free(user_data);
     return;
 }

 
@@ -151,35 +140,35 @@
 Object hierarchy is automatically created when addressing specific fields. 
 In the following example I create a simple JSON value containing basic information about a person.

 
-
void serialization_example(void) {
-    JSON_Value *root_value = json_value_init_object();
-    JSON_Object *root_object = json_value_get_object(root_value);
-    char *serialized_string = NULL;
-    json_object_set_string(root_object, "name", "John Smith");
-    json_object_set_number(root_object, "age", 25);
-    json_object_dotset_string(root_object, "address.city", "Cupertino");
-    json_object_dotset_value(root_object, "contact.emails", json_parse_string("[\"email@example.com\",\"email2@example.com\"]"));
-    serialized_string = json_serialize_to_string(root_value);
-    puts(serialized_string);
-    json_free_serialized_string(serialized_string);
-    json_value_free(root_value);
+
void serialization_example(void) {
+    JSON_Value *root_value = json_value_init_object();
+    JSON_Object *root_object = json_value_get_object(root_value);
+    char *serialized_string = NULL;
+    json_object_set_string(root_object, "name", "John Smith");
+    json_object_set_number(root_object, "age", 25);
+    json_object_dotset_string(root_object, "address.city", "Cupertino");
+    json_object_dotset_value(root_object, "contact.emails", json_parse_string("[\"email@example.com\",\"email2@example.com\"]"));
+    serialized_string = json_serialize_to_string_pretty(root_value);
+    puts(serialized_string);
+    json_free_serialized_string(serialized_string);
+    json_value_free(root_value);
 }
 

 
-
Created value (after formatting outside parson):

-
-
{  
-   "name":"John Smith",
-   "age":25,
-   "address":{  
-      "city":"Cupertino"
-   },
-   "contact":{  
-      "emails":[  
-         "email@example.com",
-         "email2@example.com"
-      ]
-   }
+
Output:

+
+
{
+    "name": "John Smith",
+    "age": 25,
+    "address": {
+        "city": "Cupertino"
+    },
+    "contact": {
+        "emails": [
+            "email@example.com",
+            "email2@example.com"
+        ]
+    }
 }
 

 
@@ -194,13 +183,16 @@ Remember to follow parson's code style and write appropriate tests.

 License