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package bug
import (
"fmt"
"strings"
"github.com/pkg/errors"
"github.com/MichaelMure/git-bug/repository"
"github.com/MichaelMure/git-bug/util/lamport"
)
type gitTree struct {
opsEntry repository.TreeEntry
createTime lamport.Time
editTime lamport.Time
}
func readTree(repo repository.RepoData, hash repository.Hash) (*gitTree, error) {
tree := &gitTree{}
entries, err := repo.ReadTree(hash)
if err != nil {
return nil, errors.Wrap(err, "can't list git tree entries")
}
opsFound := false
for _, entry := range entries {
if entry.Name == opsEntryName {
tree.opsEntry = entry
opsFound = true
continue
}
if strings.HasPrefix(entry.Name, createClockEntryPrefix) {
n, err := fmt.Sscanf(entry.Name, createClockEntryPattern, &tree.createTime)
if err != nil {
return nil, errors.Wrap(err, "can't read create lamport time")
}
if n != 1 {
return nil, fmt.Errorf("could not parse create time lamport value")
}
}
if strings.HasPrefix(entry.Name, editClockEntryPrefix) {
n, err := fmt.Sscanf(entry.Name, editClockEntryPattern, &tree.editTime)
if err != nil {
return nil, errors.Wrap(err, "can't read edit lamport time")
}
if n != 1 {
return nil, fmt.Errorf("could not parse edit time lamport value")
}
}
}
if !opsFound {
return nil, errors.New("invalid tree, missing the ops entry")
}
return tree, nil
}
func makeMediaTree(pack OperationPack) []repository.TreeEntry {
var tree []repository.TreeEntry
counter := 0
added := make(map[repository.Hash]interface{})
for _, ops := range pack.Operations {
for _, file := range ops.GetFiles() {
if _, has := added[file]; !has {
tree = append(tree, repository.TreeEntry{
ObjectType: repository.Blob,
Hash: file,
// The name is not important here, we only need to
// reference the blob.
Name: fmt.Sprintf("file%d", counter),
})
counter++
added[file] = struct{}{}
}
}
}
return tree
}
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