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Refactor get_file_by_id() into smaller functions

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This commit is contained in:
Matthias Beyer 2015-11-24 16:46:09 +01:00
parent 1b1f0678cb
commit 2ed2b17b85
1 changed files with 3 additions and 11 deletions
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14
src/storage/backend.rs
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@ -124,18 +124,10 @@ impl StorageBackend {
pub fn get_file_by_id<'a, HP>(&self, id: FileID, p: &Parser<HP>) -> Option<File>
where HP: FileHeaderParser<'a>
{
let path = self.build_filepath_with_id(id);
if let Ok(file) = FSFile::open(path) {
if let Ok(fs) = FSFile::open(self.build_filepath_with_id(id)) {
let mut s = String::new();
file.read_to_string(&mut s);
let parser_out = p.read(s);
if let Ok((header, data)) = parser_out {
Some(File::from_parser_result(id, header, data))
} else {
info!("Cannot build File from ID '{}'. Parser Error:\n{}",
id, parser_out.err().unwrap());
None
}
fs.read_to_string(&mut s);
p.read(s).and_then(|(h, d)| Ok(File::from_parser_result(id, h, d))).ok()
} else {
None
}