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bucket_dir.go
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/
bucket_dir.go
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package bucket
import (
"bytes"
"context"
"regexp"
"strings"
"github.com/FleekHQ/space-daemon/log"
"github.com/ipfs/interface-go-ipfs-core/path"
)
// Keep file is added to empty directories
var keepFileName = ".keep"
func (b *Bucket) DirExists(ctx context.Context, path string) (bool, error) {
b.lock.RLock()
defer b.lock.RUnlock()
_, err := b.ListDirectory(ctx, path)
log.Debug("returned from bucket call")
if err != nil {
// NOTE: not sure if this is the best approach but didnt
// want to loop over items each time
match, _ := regexp.MatchString(".*no link named.*under.*", err.Error())
if match {
return false, nil
}
log.Info("error doing list path on non existent directoy: ", err.Error())
// Since a nil would be interpreted as a false
return false, err
}
return true, nil
}
// CreateDirectory creates an empty directory
// Because textile doesn't support empty directory an empty .keep file is created
// in the directory
func (b *Bucket) CreateDirectory(ctx context.Context, path string) (result path.Resolved, root path.Path, err error) {
b.lock.Lock()
defer b.lock.Unlock()
ctx, _, err = b.GetContext(ctx)
if err != nil {
return nil, nil, err
}
// append .keep file to the end of the directory
emptyDirPath := strings.TrimRight(path, "/") + "/" + keepFileName
return b.bucketsClient.PushPath(ctx, b.Key(), emptyDirPath, &bytes.Buffer{})
}
// ListDirectory returns a list of items in a particular directory
func (b *Bucket) ListDirectory(ctx context.Context, path string) (*DirEntries, error) {
b.lock.RLock()
defer b.lock.RUnlock()
ctx, _, err := b.GetContext(ctx)
if err != nil {
return nil, err
}
result, err := b.bucketsClient.ListPath(ctx, b.Key(), path)
if err != nil {
return nil, err
}
return (*DirEntries)(result), err
}
// DeleteDirOrFile will delete file or directory at path
func (b *Bucket) DeleteDirOrFile(ctx context.Context, path string) (path.Resolved, error) {
b.lock.Lock()
defer b.lock.Unlock()
ctx, _, err := b.GetContext(ctx)
if err != nil {
return nil, err
}
return b.bucketsClient.RemovePath(ctx, b.Key(), path)
}