1 files changed, 196 insertions, 0 deletions
diff --git a/vendor/git2/src/reflog.rs b/vendor/git2/src/reflog.rs
new file mode 100644
index 0000000..bbd2140
--- /dev/null
+++ b/vendor/git2/src/reflog.rs
@@ -0,0 +1,196 @@
+use libc::size_t;
+use std::iter::FusedIterator;
+use std::marker;
+use std::ops::Range;
+use std::str;
+
+use crate::util::Binding;
+use crate::{raw, signature, Error, Oid, Signature};
+
+/// A reference log of a git repository.
+pub struct Reflog {
+    raw: *mut raw::git_reflog,
+}
+
+/// An entry inside the reflog of a repository
+pub struct ReflogEntry<'reflog> {
+    raw: *const raw::git_reflog_entry,
+    _marker: marker::PhantomData<&'reflog Reflog>,
+}
+
+/// An iterator over the entries inside of a reflog.
+pub struct ReflogIter<'reflog> {
+    range: Range<usize>,
+    reflog: &'reflog Reflog,
+}
+
+impl Reflog {
+    /// Add a new entry to the in-memory reflog.
+    pub fn append(
+        &mut self,
+        new_oid: Oid,
+        committer: &Signature<'_>,
+        msg: Option<&str>,
+    ) -> Result<(), Error> {
+        let msg = crate::opt_cstr(msg)?;
+        unsafe {
+            try_call!(raw::git_reflog_append(
+                self.raw,
+                new_oid.raw(),
+                committer.raw(),
+                msg
+            ));
+        }
+        Ok(())
+    }
+
+    /// Remove an entry from the reflog by its index
+    ///
+    /// To ensure there's no gap in the log history, set rewrite_previous_entry
+    /// param value to `true`. When deleting entry n, member old_oid of entry
+    /// n-1 (if any) will be updated with the value of member new_oid of entry
+    /// n+1.
+    pub fn remove(&mut self, i: usize, rewrite_previous_entry: bool) -> Result<(), Error> {
+        unsafe {
+            try_call!(raw::git_reflog_drop(
+                self.raw,
+                i as size_t,
+                rewrite_previous_entry
+            ));
+        }
+        Ok(())
+    }
+
+    /// Lookup an entry by its index
+    ///
+    /// Requesting the reflog entry with an index of 0 (zero) will return the
+    /// most recently created entry.
+    pub fn get(&self, i: usize) -> Option<ReflogEntry<'_>> {
+        unsafe {
+            let ptr = raw::git_reflog_entry_byindex(self.raw, i as size_t);
+            Binding::from_raw_opt(ptr)
+        }
+    }
+
+    /// Get the number of log entries in a reflog
+    pub fn len(&self) -> usize {
+        unsafe { raw::git_reflog_entrycount(self.raw) as usize }
+    }
+
+    /// Return `true ` is there is no log entry in a reflog
+    pub fn is_empty(&self) -> bool {
+        self.len() == 0
+    }
+
+    /// Get an iterator to all entries inside of this reflog
+    pub fn iter(&self) -> ReflogIter<'_> {
+        ReflogIter {
+            range: 0..self.len(),
+            reflog: self,
+        }
+    }
+
+    /// Write an existing in-memory reflog object back to disk using an atomic
+    /// file lock.
+    pub fn write(&mut self) -> Result<(), Error> {
+        unsafe {
+            try_call!(raw::git_reflog_write(self.raw));
+        }
+        Ok(())
+    }
+}
+
+impl Binding for Reflog {
+    type Raw = *mut raw::git_reflog;
+
+    unsafe fn from_raw(raw: *mut raw::git_reflog) -> Reflog {
+        Reflog { raw }
+    }
+    fn raw(&self) -> *mut raw::git_reflog {
+        self.raw
+    }
+}
+
+impl Drop for Reflog {
+    fn drop(&mut self) {
+        unsafe { raw::git_reflog_free(self.raw) }
+    }
+}
+
+impl<'reflog> ReflogEntry<'reflog> {
+    /// Get the committer of this entry
+    pub fn committer(&self) -> Signature<'_> {
+        unsafe {
+            let ptr = raw::git_reflog_entry_committer(self.raw);
+            signature::from_raw_const(self, ptr)
+        }
+    }
+
+    /// Get the new oid
+    pub fn id_new(&self) -> Oid {
+        unsafe { Binding::from_raw(raw::git_reflog_entry_id_new(self.raw)) }
+    }
+
+    /// Get the old oid
+    pub fn id_old(&self) -> Oid {
+        unsafe { Binding::from_raw(raw::git_reflog_entry_id_old(self.raw)) }
+    }
+
+    /// Get the log message, returning `None` on invalid UTF-8.
+    pub fn message(&self) -> Option<&str> {
+        self.message_bytes().and_then(|s| str::from_utf8(s).ok())
+    }
+
+    /// Get the log message as a byte array.
+    pub fn message_bytes(&self) -> Option<&[u8]> {
+        unsafe { crate::opt_bytes(self, raw::git_reflog_entry_message(self.raw)) }
+    }
+}
+
+impl<'reflog> Binding for ReflogEntry<'reflog> {
+    type Raw = *const raw::git_reflog_entry;
+
+    unsafe fn from_raw(raw: *const raw::git_reflog_entry) -> ReflogEntry<'reflog> {
+        ReflogEntry {
+            raw,
+            _marker: marker::PhantomData,
+        }
+    }
+    fn raw(&self) -> *const raw::git_reflog_entry {
+        self.raw
+    }
+}
+
+impl<'reflog> Iterator for ReflogIter<'reflog> {
+    type Item = ReflogEntry<'reflog>;
+    fn next(&mut self) -> Option<ReflogEntry<'reflog>> {
+        self.range.next().and_then(|i| self.reflog.get(i))
+    }
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        self.range.size_hint()
+    }
+}
+impl<'reflog> DoubleEndedIterator for ReflogIter<'reflog> {
+    fn next_back(&mut self) -> Option<ReflogEntry<'reflog>> {
+        self.range.next_back().and_then(|i| self.reflog.get(i))
+    }
+}
+impl<'reflog> FusedIterator for ReflogIter<'reflog> {}
+impl<'reflog> ExactSizeIterator for ReflogIter<'reflog> {}
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn smoke() {
+        let (_td, repo) = crate::test::repo_init();
+        let mut reflog = repo.reflog("HEAD").unwrap();
+        assert_eq!(reflog.iter().len(), 1);
+        reflog.write().unwrap();
+
+        let entry = reflog.iter().next().unwrap();
+        assert!(entry.message().is_some());
+
+        repo.reflog_rename("HEAD", "refs/heads/foo").unwrap();
+        repo.reflog_delete("refs/heads/foo").unwrap();
+    }
+}