C编写的轻量级json库：parson
jopen
9年前
parson是一个采用C编写的轻量级JOSN库。
特性
- Full JSON support
- Lightweight (only 2 files)
- Simple API
- Addressing json values with dot notation (similiar to C structs or objects in most OO languages, e.g. "objectA.objectB.value")
- C89 compatible
- Test suites
解析JSON
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) { JSON_Value *root_value; JSON_Array *commits; JSON_Object *commit; size_t i; 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", username, repo, output_filename); 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); 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")); } /* cleanup code */ json_value_free(root_value); system(cleanup_command); } Calling print_commits_info("torvalds", "linux"); prints:
Date SHA Author 2012-10-15 dd8e8c4a2c David Rientjes 2012-10-15 3ce9e53e78 Michal Marek 2012-10-14 29bb4cc5e0 Randy Dunlap 2012-10-15 325adeb55e Ralf Baechle 2012-10-14 68687c842c Russell King 2012-10-14 ddffeb8c4d Linus Torvalds