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Use Result for from_storeid

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This commit is contained in:
Raphael Nestler 2016-10-19 22:24:33 +02:00
parent 4ca560af7f
commit 841c82b950
3 changed files with 32 additions and 16 deletions
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39
libimagdiary/src/diaryid.rs
View file

@ -30,6 +30,9 @@ use libimagstore::storeid::StoreId;
use libimagstore::storeid::IntoStoreId;
use libimagstore::store::Result as StoreResult;
use error::DiaryError as DE;
use error::DiaryErrorKind as DEK;
use module_path::ModuleEntryPath;
#[derive(Debug, Clone)]
@ -175,7 +178,7 @@ impl Into<NaiveDateTime> for DiaryId {
pub trait FromStoreId : Sized {
fn from_storeid(&StoreId) -> Option<Self>;
fn from_storeid(&StoreId) -> Result<Self, DE>;
}
@ -190,7 +193,7 @@ fn component_to_str<'a>(com: Component<'a>) -> Option<&'a str> {
impl FromStoreId for DiaryId {
fn from_storeid(s: &StoreId) -> Option<DiaryId> {
fn from_storeid(s: &StoreId) -> Result<DiaryId, DE> {
use std::str::FromStr;
let mut cmps = s.components().rev();
@ -212,25 +215,37 @@ impl FromStoreId for DiaryId {
})
{
Some(s) => s,
None => return None,
None => return Err(DE::new(DEK::ParseError, None)),
};
let day :Option<u32> = cmps.next().and_then(component_to_str).and_then(|s| FromStr::from_str(s).ok());
let month :Option<u32> = cmps.next().and_then(component_to_str).and_then(|s| FromStr::from_str(s).ok());
let year :Option<i32> = cmps.next().and_then(component_to_str).and_then(|s| FromStr::from_str(s).ok());
let name = cmps.next().and_then(component_to_str).map(String::from);
let day: Result<u32,_> = cmps.next().and_then(component_to_str)
.ok_or(DE::new(DEK::ParseError, None))
.and_then(|s| s.parse::<u32>()
.map_err(|e| DE::new(DEK::ParseError, Some(Box::new(e)))));
let month: Result<u32,_> = cmps.next().and_then(component_to_str)
.ok_or(DE::new(DEK::ParseError, None))
.and_then(|s| s.parse::<u32>()
.map_err(|e| DE::new(DEK::ParseError, Some(Box::new(e)))));
let year: Result<i32,_> = cmps.next().and_then(component_to_str)
.ok_or(DE::new(DEK::ParseError, None))
.and_then(|s| s.parse::<i32>()
.map_err(|e| DE::new(DEK::ParseError, Some(Box::new(e)))));
let name = cmps.next().and_then(component_to_str).map(String::from);
debug!("Day = {:?}", day);
debug!("Month = {:?}", month);
debug!("Year = {:?}", year);
debug!("Name = {:?}", name);
let day = match day { None => return None, Some(day) => day };
let month = match month { None => return None, Some(month) => month };
let year = match year { None => return None, Some(year) => year };
let name = match name { None => return None, Some(name) => name };
let day = try!(day);
let month = try!(month);
let year = try!(year);
let name = try!(name.ok_or(DE::new(DEK::ParseError, None)));
Some(DiaryId::new(name, year, month, day, hour, minute))
Ok(DiaryId::new(name, year, month, day, hour, minute))
}
}

3
libimagdiary/src/error.rs
View file

@ -27,7 +27,8 @@ generate_error_module!(
PathConversionError => "Error while converting paths internally",
EntryNotInDiary => "Entry not in Diary",
IOError => "IO Error",
ViewError => "Error viewing diary entry"
ViewError => "Error viewing diary entry",
ParseError => "Error while parsing"
);
);

6
libimagdiary/src/iter.rs
View file

@ -99,9 +99,9 @@ impl<'a> Iterator for DiaryEntryIterator<'a> {
if next.is_in_diary(self.name) {
debug!("Seems to be in diary: {:?}", next);
let id = match DiaryId::from_storeid(&next) {
Some(i) => i,
None => {
debug!("Couldn't parse {:?} into DiaryId", next);
Ok(i) => i,
Err(e) => {
debug!("Couldn't parse {:?} into DiaryId: {:?}", next, e);
continue;
}
};