mirror of
https://codeberg.org/forgejo/forgejo
synced 2024-11-27 20:26:09 +01:00
cbf923e87b
Refactor Hash interfaces and centralize hash function. This will allow easier introduction of different hash function later on. This forms the "no-op" part of the SHA256 enablement patch.
102 lines
2.3 KiB
Go
102 lines
2.3 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
|
|
// Copyright 2019 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package git
|
|
|
|
import (
|
|
"bytes"
|
|
"io"
|
|
"strings"
|
|
)
|
|
|
|
// ObjectType git object type
|
|
type ObjectType string
|
|
|
|
const (
|
|
// ObjectCommit commit object type
|
|
ObjectCommit ObjectType = "commit"
|
|
// ObjectTree tree object type
|
|
ObjectTree ObjectType = "tree"
|
|
// ObjectBlob blob object type
|
|
ObjectBlob ObjectType = "blob"
|
|
// ObjectTag tag object type
|
|
ObjectTag ObjectType = "tag"
|
|
// ObjectBranch branch object type
|
|
ObjectBranch ObjectType = "branch"
|
|
)
|
|
|
|
// Bytes returns the byte array for the Object Type
|
|
func (o ObjectType) Bytes() []byte {
|
|
return []byte(o)
|
|
}
|
|
|
|
type EmptyReader struct{}
|
|
|
|
func (EmptyReader) Read(p []byte) (int, error) {
|
|
return 0, io.EOF
|
|
}
|
|
|
|
func (repo *Repository) GetObjectFormat() (ObjectFormat, error) {
|
|
if repo != nil && repo.objectFormat != nil {
|
|
return repo.objectFormat, nil
|
|
}
|
|
|
|
str, err := repo.hashObject(EmptyReader{}, false)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
hash, err := IDFromString(str)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
repo.objectFormat = hash.Type()
|
|
|
|
return repo.objectFormat, nil
|
|
}
|
|
|
|
// HashObject takes a reader and returns hash for that reader
|
|
func (repo *Repository) HashObject(reader io.Reader) (ObjectID, error) {
|
|
idStr, err := repo.hashObject(reader, true)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return repo.objectFormat.NewIDFromString(idStr)
|
|
}
|
|
|
|
func (repo *Repository) hashObject(reader io.Reader, save bool) (string, error) {
|
|
var cmd *Command
|
|
if save {
|
|
cmd = NewCommand(repo.Ctx, "hash-object", "-w", "--stdin")
|
|
} else {
|
|
cmd = NewCommand(repo.Ctx, "hash-object", "--stdin")
|
|
}
|
|
stdout := new(bytes.Buffer)
|
|
stderr := new(bytes.Buffer)
|
|
err := cmd.Run(&RunOpts{
|
|
Dir: repo.Path,
|
|
Stdin: reader,
|
|
Stdout: stdout,
|
|
Stderr: stderr,
|
|
})
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return strings.TrimSpace(stdout.String()), nil
|
|
}
|
|
|
|
// GetRefType gets the type of the ref based on the string
|
|
func (repo *Repository) GetRefType(ref string) ObjectType {
|
|
if repo.IsTagExist(ref) {
|
|
return ObjectTag
|
|
} else if repo.IsBranchExist(ref) {
|
|
return ObjectBranch
|
|
} else if repo.IsCommitExist(ref) {
|
|
return ObjectCommit
|
|
} else if _, err := repo.GetBlob(ref); err == nil {
|
|
return ObjectBlob
|
|
}
|
|
return ObjectType("invalid")
|
|
}
|