Add Store::load_in_cache(... FileID)

src/storage/mod.rs

@@ -4,6 +4,7 @@ use std::collections::HashMap;
 use std::fs::File as FSFile;
 use std::ops::Deref;
 use std::io::Write;
+use std::io::Read;
 
 pub mod path;
 pub mod file;
@@ -41,6 +42,26 @@ impl Store {
         res
     }
 
+    pub fn load_in_cache<HP>(&self, m: &Module, parser: &Parser<HP>, id: FileID)
+        -> Option<Rc<RefCell<File>>>
+        where HP: FileHeaderParser
+    {
+        let idstr : String = id.clone().into();
+        let path = format!("{}/{}-{}.imag", self.storepath, m.name(), idstr);
+        let mut string = String::new();
+
+        FSFile::open(&path).map(|mut file| {
+            file.read_to_string(&mut string)
+                .map_err(|e| error!("Failed reading file: '{}'", path));
+        });
+
+        parser.read(string).map(|(header, data)| {
+            self.new_file_from_parser_result(m, id.clone(), header, data);
+        });
+
+        self.load(&id)
+    }
+
     pub fn new_file(&self, module: &Module)
         -> FileID
     {