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package memory
import (
"bytes"
"io"
"gopkg.in/src-d/go-git.v2/core"
)
// Object on memory core.Object implementation
type Object struct {
t core.ObjectType
h core.Hash
content []byte
size int64
}
// Hash return the object Hash, the hash is calculated on-the-fly the first
// time is called, the subsequent calls the same Hash is returned even in the
// type or the content has changed. The Hash is only generated if the size of
// the content is exactly the Object.Size
func (o *Object) Hash() core.Hash {
if o.h == core.ZeroHash && int64(len(o.content)) == o.size {
o.h = core.ComputeHash(o.t, o.content)
}
return o.h
}
// Type return the core.ObjectType
func (o *Object) Type() core.ObjectType { return o.t }
// SetType sets the core.ObjectType
func (o *Object) SetType(t core.ObjectType) { o.t = t }
// Size return the size of the object
func (o *Object) Size() int64 { return o.size }
// SetSize set the object size, the given size should be written afterwards
func (o *Object) SetSize(s int64) { o.size = s }
// Reader returns a io.Reader used to read the object content
func (o *Object) Reader() io.Reader {
return bytes.NewBuffer(o.content)
}
// Writer returns a io.Writed used to write the object content
func (o *Object) Writer() io.Writer {
return o
}
func (o *Object) Write(p []byte) (n int, err error) {
o.content = append(o.content, p...)
return len(p), nil
}
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