use curl::easy::Easy;
use serde_json;
use std::str;
use Configuration;
use WikibaseError;
pub fn wikibase_request(url: &str, configuration: &Configuration)
-> Result<serde_json::Value, WikibaseError> {
let mut request = Easy::new();
let mut json = Vec::new();
match request.useragent(&configuration.user_agent()) {
Ok(_) => {}
Err(_) => return Err(WikibaseError::Configuration(
"User-agent was not accepted by curl".to_string()))
};
match request.url(&url) {
Ok(_) => {},
Err(_) => return Err(WikibaseError::Request("Request failed".to_string()))
};
{
let mut transfer = request.transfer();
transfer.write_function(|data| {
json.extend_from_slice(data);
Ok(data.len())
}).unwrap();
match transfer.perform() {
Ok(_) => {},
Err(_) => return Err(WikibaseError::Request("Transfer failed".to_string()))
};
}
let s = match str::from_utf8(&json[..]) {
Ok(value) => value,
Err(_) => return Err(WikibaseError::Request("UTF8 decode failed".to_string()))
};
let item_json: serde_json::Value = match serde_json::from_str(s) {
Ok(value) => value,
Err(_) => return Err(WikibaseError::Request("JSON parsing failed".to_string()))
};
Ok(item_json)
}