json_read_object

   int json_read_object(struct json_buffer *jb, const struct json_attr_t *attrs)

This function reads in JSON data stream, while looking for name/value pairs described in attrs. attrs is an array; end of the array is indicated by an entry with NULL as the name.

Arguments

Arguments	Description
jb	json_decoder to use
attrs	array of attributes to look for

Returned values

0 on success.

Example

static int
imgr_upload(struct nmgr_jbuf *njb)
{
    ...
    const struct json_attr_t off_attr[4] = {
        [0] = {
            .attribute = "off",
            .type = t_uinteger,
            .addr.uinteger = &off,
            .nodefault = true
        },
        [1] = {
            .attribute = "data",
            .type = t_string,
            .addr.string = img_data,
            .len = sizeof(img_data)
        },
        [2] = {
            .attribute = "len",
            .type = t_uinteger,
            .addr.uinteger = &size,
            .nodefault = true
        }
    };
    ...

    rc = json_read_object(&njb->njb_buf, off_attr);
    if (rc || off == UINT_MAX) {
        rc = OS_EINVAL;
        goto err;
    }
    ...
}