Implement entry reading

libimagstore/src/error.rs

@@ -3,6 +3,7 @@ use std::fmt::Error as FmtError;
 use std::clone::Clone;
 use std::fmt::{Debug, Display, Formatter};
 use std::fmt;
+use std::convert::From;
 use toml;
 
 /**
@@ -19,7 +20,8 @@ pub enum StoreErrorKind {
     StorePathExists,
     StorePathCreate,
     LockPoisoned,
-    EntryAlreadyBorrowed
+    EntryAlreadyBorrowed,
+    MalformedEntry,
         // maybe more
 }
 
@@ -36,6 +38,7 @@ fn store_error_type_as_str(e: &StoreErrorKind) -> &'static str {
         &StoreErrorKind::LockPoisoned
             => "The internal Store Lock has been poisoned",
         &StoreErrorKind::EntryAlreadyBorrowed => "Entry is already borrowed",
+        &StoreErrorKind::MalformedEntry => "Entry has invalid formatting, missing header",
     }
 }
 
@@ -101,6 +104,14 @@ impl Error for StoreError {
 
 }
 
+impl From<ParserError> for StoreError {
+    fn from(ps: ParserError) -> StoreError {
+        StoreError {
+            err_type: StoreErrorKind::MalformedEntry,
+            cause: Some(Box::new(ps)),
+        }
+    }
+}
 
 #[derive(Clone)]
 pub enum ParserErrorKind {

libimagstore/src/store.rs

@@ -11,6 +11,7 @@ use std::collections::BTreeMap;
 
 use fs2::FileExt;
 use toml::{Table, Value};
+use regex::Regex;
 
 use error::{ParserErrorKind, ParserError};
 use error::{StoreError, StoreErrorKind};
@@ -44,7 +45,7 @@ impl StoreEntry {
 
     fn get_entry(&mut self) -> Result<Entry> {
         if !self.is_borrowed() {
-            let file = self.file.get_file();
+            let file = self.file.get_file_mut();
             if let Err(err) = file {
                 if err.err_type() == StoreErrorKind::FileNotFound {
                     Ok(Entry::new(self.id.clone()))
@@ -53,7 +54,7 @@ impl StoreEntry {
                 }
             } else {
                 // TODO:
-                unimplemented!()
+                Entry::from_file(self.id.clone(), file.unwrap())
             }
         } else {
             return Err(StoreError::new(StoreErrorKind::EntryAlreadyBorrowed, None))
@@ -335,6 +336,43 @@ impl Entry {
         }
     }
 
+    fn from_file(loc: StoreId, file: &mut File) -> Result<Entry> {
+        use std::io::Read;
+        let file = {
+            let mut buff = String::new();
+            file.read_to_string(&mut buff);
+            buff
+        };
+
+        let re = Regex::new(r"(?smx)
+            ^---$
+            (?P<header>.*) # Header
+            ^---$
+            (?P<content>.*) # Content
+        ").unwrap();
+
+        let matches = re.captures(&file[..]);
+
+        if matches.is_none() {
+            return Err(StoreError::new(StoreErrorKind::MalformedEntry, None));
+        }
+
+        let matches = matches.unwrap();
+
+        let header = matches.name("header");
+        let content = matches.name("content").unwrap_or("");
+
+        if header.is_none() {
+            return Err(StoreError::new(StoreErrorKind::MalformedEntry, None));
+        }
+
+        Ok(Entry {
+            location: loc,
+            header: try!(EntryHeader::parse(header.unwrap())),
+            content: content.into(),
+        })
+    }
+
     pub fn get_location(&self) -> &StoreId {
         &self.location
     }