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snapshots: Make --json output [] instead of null when no snapshots

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This commit is contained in:
Leo R. Lundgren
2020-10-05 13:04:24 +02:00
parent a23d90d270
commit 137d20a06a
2 changed files with 11 additions and 2 deletions
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9
changelog/unreleased/issue-2979 Normal file
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@@ -0,0 +1,9 @@
Bugfix: Make snapshots --json output [] instead of null when no snapshots
Restic previously output `null` instead of `[]` for the `--json snapshots`
command, when there were no snapshots in the repository. This caused some
minor problems when parsing the output, but is now fixed such that `[]` is
output when the list of snapshots is empty.
https://github.com/restic/restic/issues/2979
https://github.com/restic/restic/pull/2984

4
cmd/restic/cmd_snapshots.go
View File

@@ -298,7 +298,7 @@ type SnapshotGroup struct {
// printSnapshotsJSON writes the JSON representation of list to stdout. // printSnapshotsJSON writes the JSON representation of list to stdout.
func printSnapshotGroupJSON(stdout io.Writer, snGroups map[string]restic.Snapshots, grouped bool) error { func printSnapshotGroupJSON(stdout io.Writer, snGroups map[string]restic.Snapshots, grouped bool) error {
if grouped { if grouped {
var snapshotGroups []SnapshotGroup snapshotGroups := []SnapshotGroup{}
for k, list := range snGroups { for k, list := range snGroups {
var key restic.SnapshotGroupKey var key restic.SnapshotGroupKey
@@ -330,7 +330,7 @@ func printSnapshotGroupJSON(stdout io.Writer, snGroups map[string]restic.Snapsho
} }
// Old behavior // Old behavior
var snapshots []Snapshot snapshots := []Snapshot{}
for _, list := range snGroups { for _, list := range snGroups {
for _, sn := range list { for _, sn := range list {