mirror of https://github.com/go-gitea/gitea.git
117 lines
2.4 KiB
Go
117 lines
2.4 KiB
Go
package packfile
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import (
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"io"
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billy "gopkg.in/src-d/go-billy.v4"
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"gopkg.in/src-d/go-git.v4/plumbing"
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"gopkg.in/src-d/go-git.v4/plumbing/cache"
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"gopkg.in/src-d/go-git.v4/plumbing/format/idxfile"
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)
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// FSObject is an object from the packfile on the filesystem.
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type FSObject struct {
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hash plumbing.Hash
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h *ObjectHeader
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offset int64
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size int64
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typ plumbing.ObjectType
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index idxfile.Index
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fs billy.Filesystem
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path string
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cache cache.Object
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}
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// NewFSObject creates a new filesystem object.
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func NewFSObject(
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hash plumbing.Hash,
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finalType plumbing.ObjectType,
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offset int64,
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contentSize int64,
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index idxfile.Index,
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fs billy.Filesystem,
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path string,
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cache cache.Object,
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) *FSObject {
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return &FSObject{
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hash: hash,
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offset: offset,
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size: contentSize,
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typ: finalType,
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index: index,
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fs: fs,
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path: path,
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cache: cache,
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}
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}
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// Reader implements the plumbing.EncodedObject interface.
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func (o *FSObject) Reader() (io.ReadCloser, error) {
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obj, ok := o.cache.Get(o.hash)
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if ok && obj != o {
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reader, err := obj.Reader()
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if err != nil {
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return nil, err
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}
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return reader, nil
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}
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f, err := o.fs.Open(o.path)
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if err != nil {
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return nil, err
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}
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p := NewPackfileWithCache(o.index, nil, f, o.cache)
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r, err := p.getObjectContent(o.offset)
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if err != nil {
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_ = f.Close()
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return nil, err
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}
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if err := f.Close(); err != nil {
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return nil, err
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}
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return r, nil
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}
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// SetSize implements the plumbing.EncodedObject interface. This method
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// is a noop.
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func (o *FSObject) SetSize(int64) {}
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// SetType implements the plumbing.EncodedObject interface. This method is
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// a noop.
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func (o *FSObject) SetType(plumbing.ObjectType) {}
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// Hash implements the plumbing.EncodedObject interface.
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func (o *FSObject) Hash() plumbing.Hash { return o.hash }
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// Size implements the plumbing.EncodedObject interface.
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func (o *FSObject) Size() int64 { return o.size }
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// Type implements the plumbing.EncodedObject interface.
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func (o *FSObject) Type() plumbing.ObjectType {
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return o.typ
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}
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// Writer implements the plumbing.EncodedObject interface. This method always
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// returns a nil writer.
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func (o *FSObject) Writer() (io.WriteCloser, error) {
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return nil, nil
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}
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type objectReader struct {
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io.ReadCloser
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f billy.File
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}
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func (r *objectReader) Close() error {
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if err := r.ReadCloser.Close(); err != nil {
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_ = r.f.Close()
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return err
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}
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return r.f.Close()
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}
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