Cjons Serialization Tool Interpretation III (use case)

Cjson Use Cases

After understanding the data structure, interface and implementation of Cjson, let's illustrate its use.

This example is a simple management of student information forms, and we add element information to the JSON by means of key-value pairs.

The output can then be formatted and the original Cjson object will be generated in reverse from the string output.

intTest_cjson () {Cjson* Proot =Cjson_createobject (); Cjson* Parray =Cjson_createarray (); Cjson_additemtoobject (Proot,"Students_info", Parray); Char* Szout =Cjson_print (Proot); Cjson* Pitem =Cjson_createobject (); Cjson_addstringtoobject (Pitem,"name","chenzhongjing"); Cjson_addstringtoobject (Pitem,"Sex","male"); Cjson_addnumbertoobject (Pitem," Age", -);    Cjson_additemtoarray (Parray, Pitem); Pitem=Cjson_createobject (); Cjson_addstringtoobject (Pitem,"name","Fengxuan"); Cjson_addstringtoobject (Pitem,"Sex","male"); Cjson_addnumbertoobject (Pitem," Age", -);    Cjson_additemtoarray (Parray, Pitem); Pitem=Cjson_createobject (); Cjson_addstringtoobject (Pitem,"name","Tuhui"); Cjson_addstringtoobject (Pitem,"Sex","male"); Cjson_addnumbertoobject (Pitem," Age", A);    Cjson_additemtoarray (Parray, Pitem); Char* Szjson =Cjson_print (Proot); cout<< Szjson <<Endl;    Cjson_delete (Proot); //Free (Szjson);Proot=Cjson_parse (Szjson); Parray= Cjson_getobjectitem (Proot,"Students_info"); if(NULL = =Parray) {        return-1; }    intICount =cjson_getarraysize (Parray);  for(inti =0; i < ICount; ++i) {Cjson* Pitem =Cjson_getarrayitem (Parray, i); if(NULL = =pitem) {            Continue; }        stringStrName = Cjson_getobjectitem (Pitem,"name"),valuestring; stringStrsex = Cjson_getobjectitem (Pitem,"Sex"),valuestring; intIage = Cjson_getobjectitem (Pitem," Age"),Valueint;    } cjson_delete (Proot);  Free(Szjson);}

Or for formatted strings, to Cjson management, automatic recognition, produce type output.

/*Parse Text to JSON, then render back to text, and print!*/voidDoitChar*text) {    Char* out; Cjson *JSON; JSON=cjson_parse (text); if(!json) {printf ("Error before: [%s]\n", Cjson_geterrorptr ()); }    Else    {         out=Cjson_print (JSON);        Cjson_delete (JSON); printf ("%s\n", out);  Free( out); }}/*Read a file, parse, render back, etc.*/voidDofile (Char*filename) {FILE*f;LongLenChar*data; F= fopen (filename,"RB");    ASSERT (f); Fseek (F,0, Seek_end); Len=Ftell (f); Fseek (F,0, Seek_set); Data= (Char*)malloc(Len +1); memset (data,0,sizeof(Char) * (len +1)); Fread (data,1, Len, F); printf ("%s", data);    Fclose (f);    doit (data);  Free(data);}

int Main () {    char"{\n\" name\ ": \" Jack (\\\ "bee\\\") nimble\ ", \n\" format\ ": {\" type\ " :       \ "Rect\", \n\ "width\":      1920x1080, \n\ "height\":     , \n\ "interlace\":  false,\ "Frame rate\": 24\n}\n} ";
　　Doit (Text1);
　　return 0 ;  

}

Cjons Serialization Tool Interpretation III (use case)