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Do not read or write git reference files directly (#18079)

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Git will and can pack references into packfiles and therefore if you write/read the
files directly you will get false results. Instead you should use update-ref and
show-ref. To that end I have created three new functions in git/repo_commit.go that
will do this correctly.

Related #17191

Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath
2021-12-23 13:44:00 +00:00
committed by GitHub
parent e0cf3d86c4
commit ffc08c1914
6 changed files with 32 additions and 45 deletions
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12
modules/git/repo_commit_nogogit.go
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@ -49,6 +49,18 @@ func (repo *Repository) GetRefCommitID(name string) (string, error) {
return string(shaBs), nil
}
// SetReference sets the commit ID string of given reference (e.g. branch or tag).
func (repo *Repository) SetReference(name, commitID string) error {
_, err := NewCommandContext(repo.Ctx, "update-ref", name, commitID).RunInDir(repo.Path)
return err
}
// RemoveReference removes the given reference (e.g. branch or tag).
func (repo *Repository) RemoveReference(name string) error {
_, err := NewCommandContext(repo.Ctx, "update-ref", "--no-deref", "-d", name).RunInDir(repo.Path)
return err
}
// IsCommitExist returns true if given commit exists in current repository.
func (repo *Repository) IsCommitExist(name string) bool {
_, err := NewCommandContext(repo.Ctx, "cat-file", "-e", name).RunInDir(repo.Path)