Make day0 global

internal/plumbing/day.go

@@ -13,7 +13,7 @@ import (
 // It is a PipelineItem.
 type DaysSinceStart struct {
 	core.NoopMerger
-	day0        time.Time
+	day0        *time.Time
 	previousDay int
 	commits     map[int][]plumbing.Hash
 }
@@ -63,7 +63,7 @@ func (days *DaysSinceStart) Configure(facts map[string]interface{}) {
 // Initialize resets the temporary caches and prepares this PipelineItem for a series of Consume()
 // calls. The repository which is going to be analysed is supplied as an argument.
 func (days *DaysSinceStart) Initialize(repository *git.Repository) {
-	days.day0 = time.Time{}
+	days.day0 = &time.Time{}
 	days.previousDay = 0
 	if len(days.commits) > 0 {
 		keys := make([]int, len(days.commits))
@@ -86,11 +86,11 @@ func (days *DaysSinceStart) Consume(deps map[string]interface{}) (map[string]int
 	index := deps[core.DependencyIndex].(int)
 	if index == 0 {
 		// first iteration - initialize the file objects from the tree
-		days.day0 = commit.Author.When
+		*days.day0 = commit.Author.When
 		// our precision is 1 day
-		days.day0 = days.day0.Truncate(24 * time.Hour)
+		*days.day0 = days.day0.Truncate(24 * time.Hour)
 	}
-	day := int(commit.Author.When.Sub(days.day0).Hours() / 24)
+	day := int(commit.Author.When.Sub(*days.day0).Hours() / 24)
 	if day < days.previousDay {
 		// rebase works miracles, but we need the monotonous time
 		day = days.previousDay