C - json & struct

Question

I've a json
I'm reading each lines, but I don't how to save them on a struct to have an array.

Json :
[
{
"name": "knife",
" damages": 4
}
]

C struct :
typedef struct Weapons {
int damages;
char name[50];
} Weapon;

I'm reading json without a lib, I'm trying to do it myself.
So for now I only have

FILE* file = NULL;
char str[60] = "";

file = fopen("json/weapons.json", "r");
if(file != NULL) {
while(fgets(str, 60, file) != NULL) {
puts(str);
}
}

If you know how to finish this project :/

Answer 1

"Comma Separated Values"
Basically a format to store databases as easy as
cell1;cell2;cell3
stuff;thing;idek
NoxFly ドリアン

Answer 2

Its cool but if I can I'll try to keep json

Answer 3

json is a fairly easy format but if you want to implement a full-blown json parser that will still be a few hundred lines of code.
You might be better off saving your data in a format like CSV!

Answer 4

Whats CSV ? Schindlabua

Answer 5

What's your problem? How to parse the data or how to implement a JSON structure in C?

Answer 6

You can use a structure array to save them
can you include the syntex of the file also then i can give you the exact code to save your needing value to your structure

Answer 7

I guess this will help

typedef struct {
int damages;
char str [60]= NULL;
}weapons;

int main()
{
int x,i=0;
weapons w [size of the array ];
//in the while loop
{
sscanf(str,"%s",x);
w[i].damages=x;
fgets(str,60,file);
strcpy(w[i],str);
i++;
}

}

I am sure you can do the error handling

Answer 8

NoxFly ドリアン The first step then would be to read the input string character by character, and split it into "tokens", which are the smallest units of information.

For example the json string `{"a" : ["thing":40, "x":{}]}` would probably be split into the tokens:

{, "a", :, [, "thing", :, 40, "x", :, {, }, ], }

And once you have a list of tokens, you can try to make sense of them. The hard part is that in json, objects may contain other objects and you can nest them as deep as you want.

Though, just writing a tokenizer is already tricky! It might be too much work for what you are trying to do, but if you are up for a challenge then I encourage trying it of course :) I can help if you're stuck.
(Makes you appreciate the amount of work that goes into javascript's JSON.parse(x))