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git-validation: do not fail on an empty commit range

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The error could be reproduced with "git-validation -range HEAD..HEAD"

Closes: https://github.com/vbatts/git-validation/issues/36

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This commit is contained in:
Giuseppe Scrivano 2018-11-08 14:13:57 +01:00
parent 3fd57e3bf5
commit a269d9d42d
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GPG key ID: E4730F97F60286ED
1 changed files with 4 additions and 0 deletions
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4
git/commits.go
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@ -11,6 +11,7 @@ import (
// Commits returns a set of commits. // Commits returns a set of commits.
// If commitrange is a git still range 12345...54321, then it will be isolated set of commits. // If commitrange is a git still range 12345...54321, then it will be isolated set of commits.
// If commitrange is a single commit, all ancestor commits up through the hash provided. // If commitrange is a single commit, all ancestor commits up through the hash provided.
// If commitrange is an empty commit range, then nil is returned.
func Commits(commitrange string) ([]CommitEntry, error) { func Commits(commitrange string) ([]CommitEntry, error) {
cmdArgs := []string{"git", "log", `--pretty=format:%H`, commitrange} cmdArgs := []string{"git", "log", `--pretty=format:%H`, commitrange}
if debug() { if debug() {
@ -20,6 +21,9 @@ func Commits(commitrange string) ([]CommitEntry, error) {
if err != nil { if err != nil {
return nil, err return nil, err
} }
if len(output) == 0 {
return nil, nil
}
commitHashes := strings.Split(strings.TrimSpace(string(output)), "\n") commitHashes := strings.Split(strings.TrimSpace(string(output)), "\n")
commits := make([]CommitEntry, len(commitHashes)) commits := make([]CommitEntry, len(commitHashes))
for i, commitHash := range commitHashes { for i, commitHash := range commitHashes {