Day 1

1 files changed, 166 insertions, 0 deletions

diff --git a/refs.sort.go b/refs.sort.go
new file mode 100644
index 0000000..6080afc
--- /dev/null
+++ b/refs.sort.go
@@ -0,0 +1,166 @@
+package gitpb
+
+// this is becoming a standard format
+// todo: autogenerate this from the .proto file?
+
+import (
+	"fmt"
+	"os"
+	"sort"
+	sync "sync"
+	"time"
+)
+
+// bad global lock until I figure out some other plan
+var lock sync.RWMutex
+
+type RefIterator struct {
+	sync.RWMutex
+
+	packs []*Ref
+	index int
+}
+
+// NewRefIterator initializes a new iterator.
+func NewRefIterator(packs []*Ref) *RefIterator {
+	return &RefIterator{packs: packs}
+}
+
+// Scan moves to the next element and returns false if there are no more packs.
+func (it *RefIterator) Scan() bool {
+	if it.index >= len(it.packs) {
+		return false
+	}
+	it.index++
+	return true
+}
+
+// Ref returns the current repo.
+func (it *RefIterator) Ref() *Ref {
+	if it.packs[it.index-1] == nil {
+		for i, d := range it.packs {
+			fmt.Println("i =", i, d)
+		}
+		fmt.Println("len =", len(it.packs))
+		fmt.Println("repo == nil", it.index, it.index-1)
+		os.Exit(-1)
+	}
+	return it.packs[it.index-1]
+}
+
+// Use Scan() in a loop, similar to a while loop
+//
+//	for iterator.Scan() {
+//		d := iterator.Ref()
+//		fmt.Println("Ref UUID:", d.Uuid)
+//	}
+
+func (r *Refs) All() *RefIterator {
+	repoPointers := r.selectAllRefs()
+
+	iterator := NewRefIterator(repoPointers)
+	return iterator
+}
+
+func (r *Refs) SortByName() *RefIterator {
+	packs := r.selectAllRefs()
+
+	sort.Sort(ByName(packs))
+
+	iterator := NewRefIterator(packs)
+	return iterator
+}
+
+// enforces no duplicate package names
+func (r *Refs) Append(newP *Ref) bool {
+	lock.Lock()
+	defer lock.Unlock()
+
+	for _, p := range r.Refs {
+		if p.RefName == newP.RefName {
+			return false
+		}
+	}
+
+	r.Refs = append(r.Refs, newP)
+	return true
+}
+
+// returns time.Duration since last Update()
+func (r *Ref) Age(newP *Ref) time.Duration {
+	t := time.Since(r.Ctime.AsTime())
+	return t
+}
+
+// find a package by name
+func (r *Refs) FindByName(name string) *Ref {
+	lock.RLock()
+	defer lock.RUnlock()
+
+	for _, p := range r.Refs {
+		if p.RefName == name {
+			return p
+		}
+	}
+
+	return nil
+}
+
+func (r *Refs) Len() int {
+	lock.RLock()
+	defer lock.RUnlock()
+
+	return len(r.Refs)
+}
+
+type ByName []*Ref
+
+func (a ByName) Len() int           { return len(a) }
+func (a ByName) Less(i, j int) bool { return a[i].RefName < a[j].RefName }
+func (a ByName) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+
+// safely returns a slice of pointers to the Ref protobufs
+func (r *Refs) selectAllRefs() []*Ref {
+	lock.RLock()
+	defer lock.RUnlock()
+
+	// Create a new slice to hold pointers to each Ref
+	var allPacks []*Ref
+	allPacks = make([]*Ref, len(r.Refs))
+	for i, p := range r.Refs {
+		allPacks[i] = p // Copy pointers for safe iteration
+	}
+
+	return allPacks
+}
+
+/*
+func (r *Refs) UnmergedRefRepos() *RefRepoIterator {
+	repoPointers := r.selectUnmergedRefRepos()
+
+	sort.Sort(ByName(repoPointers))
+
+	iterator := NewRefRepoIterator(repoPointers)
+
+	return iterator
+}
+*/
+
+/*
+// this sort doesn't really work. I think it forgets to sort the last two
+// todo: sort this out. literally
+// SelectRefPointers safely returns a slice of pointers to Ref records.
+func (r *Refs) selectUnmergedRefs() []*RefRow {
+	r.RLock()
+	defer r.RUnlock()
+
+	// Create a new slice to hold pointers to each Ref
+	// repoPointers := make([]*Ref, len(c.E.Refs))
+	var repoPointers []*RefRow
+	for _, repo := range me.allrepos {
+		repoPointers = append(repoPointers, repo) // Copy pointers for safe iteration
+	}
+
+	return repoPointers
+}
+*/