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Files
kubo/commands/files/slicefile.go
Juan Batiz-Benet 978c9fa16f cmds/add: use dagutils.Editor, like patch
This changes the pin behavior. It uses the filenames given through
the api, and allows files to be streamed faltly (not a hierarchy),
which is easier for other things (like vinyl in node-ipfs-api land).
Files can also be entirely out of order, and the garbage intermediate
directories will not be pinned (gc-ed later).

The changes also mean the output of add has changed slightly-- it
no longer shows the local path added, but rather the dag path
relative to the added roots. This is a small difference, but changes
tests.

The dagutils.Editor creates a lot of chaff (intermediate objects)
along the way. Wonder how we might minimize the writes to the
datastore...

This commit also removes the "NilRepo()" part of the --only-hash
mode. We need to store at least in an in-mem repo/datastore because
otherwise the dagutils.Editor breaks.

License: MIT
Signed-off-by: Juan Batiz-Benet <juan@benet.ai>
2015-08-12 08:24:06 +02:00

77 lines
1.3 KiB
Go

package files
import (
"errors"
"io"
)
// SliceFile implements File, and provides simple directory handling.
// It contains children files, and is created from a `[]File`.
// SliceFiles are always directories, and can't be read from or closed.
type SliceFile struct {
filename string
path string
files []File
n int
}
func NewSliceFile(filename, path string, files []File) *SliceFile {
return &SliceFile{filename, path, files, 0}
}
func (f *SliceFile) IsDirectory() bool {
return true
}
func (f *SliceFile) NextFile() (File, error) {
if f.n >= len(f.files) {
return nil, io.EOF
}
file := f.files[f.n]
f.n++
return file, nil
}
func (f *SliceFile) FileName() string {
return f.filename
}
func (f *SliceFile) FullPath() string {
return f.path
}
func (f *SliceFile) Read(p []byte) (int, error) {
return 0, ErrNotReader
}
func (f *SliceFile) Close() error {
return ErrNotReader
}
func (f *SliceFile) Peek(n int) File {
return f.files[n]
}
func (f *SliceFile) Length() int {
return len(f.files)
}
func (f *SliceFile) Size() (int64, error) {
var size int64
for _, file := range f.files {
sizeFile, ok := file.(SizeFile)
if !ok {
return 0, errors.New("Could not get size of child file")
}
s, err := sizeFile.Size()
if err != nil {
return 0, err
}
size += s
}
return size, nil
}