100 lines
2.0 KiB
Go
100 lines
2.0 KiB
Go
package gitpb
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// this is becoming a standard format
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// todo: autogenerate this from the .proto file?
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import (
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"fmt"
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"os"
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"sort"
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sync "sync"
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)
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// bad global lock until I figure out some other plan
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var repolock sync.RWMutex
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type RepoIterator struct {
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sync.RWMutex
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packs []*Repo
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index int
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}
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// NewRepoIterator initializes a new iterator.
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func NewRepoIterator(packs []*Repo) *RepoIterator {
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return &RepoIterator{packs: packs}
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}
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// Scan moves to the next element and returns false if there are no more packs.
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func (it *RepoIterator) Scan() bool {
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if it.index >= len(it.packs) {
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return false
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}
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it.index++
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return true
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}
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// Repo returns the current repo.
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func (it *RepoIterator) Repo() *Repo {
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if it.packs[it.index-1] == nil {
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for i, d := range it.packs {
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fmt.Println("i =", i, d)
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}
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fmt.Println("len =", len(it.packs))
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fmt.Println("repo == nil", it.index, it.index-1)
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os.Exit(-1)
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}
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return it.packs[it.index-1]
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}
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// Use Scan() in a loop, similar to a while loop
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//
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// for iterator.Scan() {
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// d := iterator.Repo()
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// fmt.Println("Repo UUID:", d.Uuid)
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// }
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func (r *Repos) All() *RepoIterator {
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repoPointers := r.selectAllRepo()
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iterator := NewRepoIterator(repoPointers)
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return iterator
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}
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func (r *Repos) SortByName() *RepoIterator {
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packs := r.selectAllRepo()
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sort.Sort(RepoByName(packs))
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iterator := NewRepoIterator(packs)
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return iterator
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}
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func (all *Repos) Len() int {
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repolock.RLock()
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defer repolock.RUnlock()
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return len(all.Repos)
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}
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type RepoByName []*Repo
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func (a RepoByName) Len() int { return len(a) }
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func (a RepoByName) Less(i, j int) bool { return a[i].GoPath < a[j].GoPath }
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func (a RepoByName) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
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// safely returns a slice of pointers to the Repo protobufs
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func (all *Repos) selectAllRepo() []*Repo {
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repolock.RLock()
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defer repolock.RUnlock()
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// Create a new slice to hold pointers to each Repo
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var aRepos []*Repo
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aRepos = make([]*Repo, len(all.Repos))
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for i, p := range all.Repos {
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aRepos[i] = p // Copy pointers for safe iteration
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}
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return aRepos
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}
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