comparison rust/hg-core/src/revlog/changelog.rs @ 51363:d626e5e7bbbe stable

rust-changelog: don't panic on empty file lists

51362:e7be2ddfb4c2

use crate::revlog::{Node, NodePrefix};
use crate::revlog::{Revlog, RevlogEntry, RevlogError};
use crate::utils::hg_path::HgPath;
use crate::vfs::Vfs;
use crate::{Graph, GraphError, UncheckedRevision};
use itertools::Itertools;
use std::ascii::escape_default;
use std::borrow::Cow;
use std::fmt::{Debug, Formatter};

/// A specialized `Revlog` to work with changelog data format.
pub struct Changelog {
    /// The generic `revlog` format.
    pub(crate) revlog: Revlog,

        &self.bytes[self.user_end + 1..self.timestamp_end]
    }

    /// The files changed in this revision.
    pub fn files(&self) -> impl Iterator<Item = &HgPath> {
        self.bytes[self.timestamp_end + 1..self.files_end]
            .split(|b| b == &b'\n')
            .map(HgPath::new)
    }

    /// The change description.
    pub fn description(&self) -> &[u8] {
        &self.bytes[self.files_end + 2..]

            changelog.entry_for_rev(NULL_REVISION.into())?.data()?,
            ChangelogRevisionData::null()
        );
        Ok(())
    }
}

51363:d626e5e7bbbe

use crate::revlog::{Node, NodePrefix};
use crate::revlog::{Revlog, RevlogEntry, RevlogError};
use crate::utils::hg_path::HgPath;
use crate::vfs::Vfs;
use crate::{Graph, GraphError, UncheckedRevision};
use itertools::{Either, Itertools};
use std::ascii::escape_default;
use std::borrow::Cow;
use std::fmt::{Debug, Formatter};
use std::iter;

/// A specialized `Revlog` to work with changelog data format.
pub struct Changelog {
    /// The generic `revlog` format.
    pub(crate) revlog: Revlog,

        &self.bytes[self.user_end + 1..self.timestamp_end]
    }

    /// The files changed in this revision.
    pub fn files(&self) -> impl Iterator<Item = &HgPath> {
        if self.timestamp_end == self.files_end {
            Either::Left(iter::empty())
        } else {
            Either::Right(
                self.bytes[self.timestamp_end + 1..self.files_end]
                    .split(|b| b == &b'\n')
                    .map(HgPath::new),
            )
        }
    }

    /// The change description.
    pub fn description(&self) -> &[u8] {
        &self.bytes[self.files_end + 2..]

            changelog.entry_for_rev(NULL_REVISION.into())?.data()?,
            ChangelogRevisionData::null()
        );
        Ok(())
    }

    #[test]
    fn test_empty_files_list() {
        assert!(ChangelogRevisionData::null()
            .files()
            .collect_vec()
            .is_empty());
    }
}