Read the content blocking rules and make them available to the HTTP loader.

components/net/content_blocker.rs

@@ -0,0 +1,31 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use content_blocker_parser::{RuleList, parse_list};
+use std::str;
+use std::sync::Arc;
+use util::resource_files::read_resource_file;
+
+lazy_static! {
+    pub static ref BLOCKED_CONTENT_RULES: Arc<Option<RuleList>> = Arc::new(create_rule_list());
+}
+
+fn create_rule_list() -> Option<RuleList> {
+    let contents = match read_resource_file("blocked-content.json") {
+        Ok(c) => c,
+        Err(_) => return None,
+    };
+
+    let str_contents = match str::from_utf8(&contents) {
+        Ok(c) => c,
+        Err(_) => return None,
+    };
+
+    let list = match parse_list(&str_contents) {
+        Ok(l) => l,
+        Err(_) => return None,
+    };
+
+    Some(list)
+}