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package git
import (
"bytes"
"errors"
"fmt"
"io"
"strconv"
"time"
"gopkg.in/src-d/go-git.v3/core"
)
// Blob is used to store file data - it is generally a file.
type Blob struct {
Hash core.Hash
Size int64
obj core.Object
}
var ErrUnsupportedObject = errors.New("unsupported object type")
// Decode transform an core.Object into a Blob struct
func (b *Blob) Decode(o core.Object) error {
if o.Type() != core.BlobObject {
return ErrUnsupportedObject
}
b.Hash = o.Hash()
b.Size = o.Size()
b.obj = o
return nil
}
// Reader returns a reader allow the access to the content of the blob
func (b *Blob) Reader() io.Reader {
return b.obj.Reader()
}
// Signature represents an action signed by a person
type Signature struct {
Name string
Email string
When time.Time
}
// Decode decodes a byte slice into a signature
func (s *Signature) Decode(b []byte) {
open := bytes.IndexByte(b, '<')
close := bytes.IndexByte(b, '>')
if open == -1 || close == -1 {
return
}
s.Name = string(bytes.Trim(b[:open], " "))
s.Email = string(b[open+1 : close])
hasTime := close+2 < len(b)
if hasTime {
s.decodeTimeAndTimeZone(b[close+2:])
}
}
var timeZoneLength = 5
func (s *Signature) decodeTimeAndTimeZone(b []byte) {
space := bytes.IndexByte(b, ' ')
if space == -1 {
space = len(b)
}
ts, err := strconv.ParseInt(string(b[:space]), 10, 64)
if err != nil {
return
}
s.When = time.Unix(ts, 0).In(time.UTC)
var tzStart = space + 1
if tzStart >= len(b) || tzStart+timeZoneLength > len(b) {
return
}
tl, err := time.Parse("-0700", string(b[tzStart:tzStart+timeZoneLength]))
if err != nil {
return
}
s.When = s.When.In(tl.Location())
}
func (s *Signature) String() string {
return fmt.Sprintf("%s <%s>", s.Name, s.Email)
}
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