45 lines
1.3 KiB
Rust
45 lines
1.3 KiB
Rust
//! A diary viewer built on libimagentryview.
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use entry::Entry;
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use error::DiaryErrorKind as DEK;
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use error::MapErrInto;
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use result::Result;
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use libimagentryview::viewer::Viewer;
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use libimagentryview::builtin::plain::PlainViewer;
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/// This viewer does _not_ implement libimagentryview::viewer::Viewer because we need to be able to
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/// call some diary-type specific functions on the entries passed to this.
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///
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/// This type is mainly just written to be constructed-called-deleted in one go:
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///
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/// ```ignore
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/// DiaryViewer::new(show_header).view_entries(entries);
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/// ```
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///
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pub struct DiaryViewer(PlainViewer);
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impl DiaryViewer {
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pub fn new(show_header: bool) -> DiaryViewer {
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DiaryViewer(PlainViewer::new(show_header))
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}
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/// View all entries from the iterator, or stop immediately if an error occurs, returning that
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/// error.
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pub fn view_entries<'a, I: Iterator<Item = Entry<'a>>>(&self, entries: I) -> Result<()> {
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for entry in entries {
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let id = entry.diary_id();
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println!("{} :\n", id);
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let _ = try!(self.0
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.view_entry(&entry)
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.map_err_into(DEK::ViewError)
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.map_err_into(DEK::IOError));
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println!("\n---\n");
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}
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Ok(())
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}
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}
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