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Implement: of external::set_link()

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This commit is contained in:
Matthias Beyer 2016-02-07 04:40:43 +01:00
parent 18de6b80d5
commit e4fae4cfcf
1 changed files with 20 additions and 2 deletions
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22
libimaglink/src/external.rs
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@ -26,7 +26,25 @@ pub fn get_link(header: &EntryHeader) -> Result<Option<Link>> {
/// Set an external link in the header
///
/// Return the previous set link if there was any
pub fn set_link(header: &mut EntryHeader, l: Link) -> Option<Link> {
unimplemented!()
pub fn set_link(header: &mut EntryHeader, l: Link) -> Result<Option<Link>> {
let old_link = header.set("imag.content.uri", Value::String(l.into()));
if old_link.is_err() {
let kind = LinkErrorKind::EntryHeaderWriteError;
let lerr = LinkError::new(kind, Some(Box::new(old_link.err().unwrap())));
return Err(lerr);
}
let old_link = old_link.unwrap();
if old_link.is_none() {
return Ok(None);
}
match old_link.unwrap() {
Value::String(s) => Ok(Some(Link::new(s))),
// We don't do anything in this case and be glad we corrected the type error with this set()
_ => Ok(None),
}
}