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|
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 refslock 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 {
refslock.Lock()
defer refslock.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 {
refslock.RLock()
defer refslock.RUnlock()
for _, p := range r.Refs {
if p.RefName == name {
return p
}
}
return nil
}
func (r *Refs) Len() int {
refslock.RLock()
defer refslock.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 {
refslock.RLock()
defer refslock.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 (all *Refs) DeleteByHash(hash string) *Ref {
refslock.Lock()
defer refslock.Unlock()
for i, _ := range all.Refs {
if all.Refs[i].Hash == hash {
all.Refs[i] = all.Refs[len(all.Refs)-1]
all.Refs = all.Refs[:len(all.Refs)-1]
return nil
}
}
return nil
}
/*
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
}
*/
|
