repolist/scanIterator.go

147 lines
3.0 KiB
Go

package repolist
import (
"fmt"
"os"
"sort"
)
type RepoIterator struct {
repos []*RepoRow
index int
}
// NewRepoIterator initializes a new iterator.
func NewRepoIterator(repos []*RepoRow) *RepoIterator {
return &RepoIterator{repos: repos}
}
// Scan moves to the next element and returns false if there are no more repos.
func (it *RepoIterator) Scan() bool {
if it.index >= len(it.repos) {
return false
}
it.index++
return true
}
// Repo returns the current repo.
func (it *RepoIterator) Repo() *RepoRow {
if it.repos[it.index-1] == nil {
for i, d := range it.repos {
fmt.Println("i =", i, d)
}
fmt.Println("len =", len(it.repos))
fmt.Println("repo == nil", it.index, it.index-1)
os.Exit(-1)
}
return it.repos[it.index-1]
}
// Use Scan() in a loop, similar to a while loop
//
// for iterator.Scan() {
// d := iterator.Repo()
// fmt.Println("Repo UUID:", d.Uuid)
// }
func (r *RepoList) ReposAll() *RepoIterator {
repoPointers := r.selectRepoAll()
iterator := NewRepoIterator(repoPointers)
return iterator
}
func (r *RepoList) ReposSortByName() *RepoIterator {
repoPointers := r.selectRepoAll()
sort.Sort(ByName(repoPointers))
iterator := NewRepoIterator(repoPointers)
return iterator
}
/*
func (r *RepoList) UnmergedRepos() *RepoIterator {
repoPointers := r.selectUnmergedRepos()
sort.Sort(ByName(repoPointers))
iterator := NewRepoIterator(repoPointers)
return iterator
}
*/
type ByName []*RepoRow
func (a ByName) Len() int { return len(a) }
func (a ByName) Less(i, j int) bool { return a[i].GoPath() < a[j].GoPath() }
func (a ByName) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
// SelectRepoPointers safely returns a slice of pointers to Repo records.
func (r *RepoList) selectRepoAll() []*RepoRow {
r.RLock()
defer r.RUnlock()
// Create a new slice to hold pointers to each Repo
// repoPointers := make([]*Repo, len(c.E.Repos))
var repoPointers []*RepoRow
for _, repo := range me.allrepos {
if repo == nil {
continue
}
if repo.Status == nil {
continue
}
if !repo.Status.InitOk {
continue
}
repoPointers = append(repoPointers, repo) // Copy pointers for safe iteration
}
return repoPointers
}
/*
// this sort doesn't really work. I think it forgets to sort the last two
// todo: sort this out. literally
// SelectRepoPointers safely returns a slice of pointers to Repo records.
func (r *RepoList) selectUnmergedRepos() []*RepoRow {
r.RLock()
defer r.RUnlock()
// Create a new slice to hold pointers to each Repo
// repoPointers := make([]*Repo, len(c.E.Repos))
var repoPointers []*RepoRow
for _, repo := range me.allrepos {
if repo == nil {
continue
}
if repo.Status == nil {
continue
}
if !repo.Status.InitOk {
continue
}
if repo.ReadOnly() {
continue
}
if repo.State() == "PERFECT" {
continue
}
if repo.Status.Whitelist {
continue
}
if repo.Status.IsReleased() {
continue
}
repoPointers = append(repoPointers, repo) // Copy pointers for safe iteration
}
return repoPointers
}
*/