Add stocks command to get stock data from Google.

src/main.rs

@@ -12,6 +12,7 @@ use regex::Regex;
 use rustc_serialize::json::{self};
 
 static WEATHER_API_BASE: &'static str = "http://api.wunderground.com/api/";
+static STOCKS_API_BASE: &'static str = "http://finance.google.com/finance/info?client=rust-bot&q=";
 
 fn main() {
     println!("Hello, world!");
@@ -98,6 +99,20 @@ fn handle_privmsg(target: &String, message_body: &String, message_obj: &Message,
                     },
                 }
             }
+        } else if inner_message.starts_with("stock") {
+            // Stock regular expression
+            lazy_static! { static ref STOCK_REGEX: Regex = Regex::new("(stock )(.+)$").unwrap(); }
+            let mut symbol = String::new();
+            match STOCK_REGEX.captures(&inner_message) {
+                Some(capture) => {
+                    match capture.at(2) {
+                        Some(symbol_match) => symbol = String::from(symbol_match),
+                        None => (),
+                    }
+                    server.send_privmsg(target, &format!("{}: {}", source_nick, &get_stocks(&symbol))).unwrap();
+                },
+                None => (),
+            }
         } else if inner_message.starts_with("bot-quit") {
             if server.config().is_owner(source_nick) {
                 std::process::exit(0);
@@ -168,3 +183,29 @@ fn get_weather_locid(api_key: &String, locid_type: &String, locid: &String) -> S
     }
     reply_message
 }
+
+fn get_stocks(symbol: &String) -> String {
+    let client = Client::new();
+    let url = &format!("{}{}", STOCKS_API_BASE, symbol);
+    println!("Attempting to fetch {}", url);
+    let mut response = match client.get(url).send() {
+        Ok(response) => response,
+        Err(_) => panic!("Error fetching JSON!"),
+    };
+    let mut response_body = String::new();
+    match response.read_to_string(&mut response_body) {
+        Ok(_) => (),
+        Err(_) => panic!("Error reading to buffer"),
+    };
+    let mut reply_message = String::new();
+    if let Ok(parsed_response) = json::Json::from_str(&response_body[4..]) {
+        let ref response_object = parsed_response.as_array().unwrap()[0];
+        println!("response_object: {}", response_object);
+        let price = response_object.find("l").unwrap().as_string().unwrap();
+        let exchange = response_object.find("e").unwrap().as_string().unwrap();
+        let change = response_object.find("c").unwrap().as_string().unwrap();
+        let last_updated = response_object.find("lt").unwrap().as_string().unwrap();
+        reply_message = format!("{} on exchange {}: {} ({}), last updated {}", symbol, exchange, price, change, last_updated);
+    }
+    reply_message
+}