forgejo/modules/git/sha1_nogogit.go

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Use native git variants by default with go-git variants as build tag (#13673) * Move last commit cache back into modules/git Signed-off-by: Andrew Thornton <art27@cantab.net> * Remove go-git from the interface for last commit cache Signed-off-by: Andrew Thornton <art27@cantab.net> * move cacheref to last_commit_cache Signed-off-by: Andrew Thornton <art27@cantab.net> * Remove go-git from routers/private/hook Signed-off-by: Andrew Thornton <art27@cantab.net> * Move FindLFSFiles to pipeline Signed-off-by: Andrew Thornton <art27@cantab.net> * Make no-go-git variants Signed-off-by: Andrew Thornton <art27@cantab.net> * Submodule RefID Signed-off-by: Andrew Thornton <art27@cantab.net> * fix issue with GetCommitsInfo Signed-off-by: Andrew Thornton <art27@cantab.net> * fix GetLastCommitForPaths Signed-off-by: Andrew Thornton <art27@cantab.net> * Improve efficiency Signed-off-by: Andrew Thornton <art27@cantab.net> * More efficiency Signed-off-by: Andrew Thornton <art27@cantab.net> * even faster Signed-off-by: Andrew Thornton <art27@cantab.net> * Reduce duplication * As per @lunny Signed-off-by: Andrew Thornton <art27@cantab.net> * attempt to fix drone Signed-off-by: Andrew Thornton <art27@cantab.net> * fix test-tags Signed-off-by: Andrew Thornton <art27@cantab.net> * default to use no-go-git variants and add gogit build tag Signed-off-by: Andrew Thornton <art27@cantab.net> * placate lint Signed-off-by: Andrew Thornton <art27@cantab.net> * as per @6543 Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: 6543 <6543@obermui.de> Co-authored-by: techknowlogick <techknowlogick@gitea.io>
2020-12-17 14:00:47 +00:00
// Copyright 2015 The Gogs Authors. All rights reserved.
// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
//go:build !gogit
Use native git variants by default with go-git variants as build tag (#13673) * Move last commit cache back into modules/git Signed-off-by: Andrew Thornton <art27@cantab.net> * Remove go-git from the interface for last commit cache Signed-off-by: Andrew Thornton <art27@cantab.net> * move cacheref to last_commit_cache Signed-off-by: Andrew Thornton <art27@cantab.net> * Remove go-git from routers/private/hook Signed-off-by: Andrew Thornton <art27@cantab.net> * Move FindLFSFiles to pipeline Signed-off-by: Andrew Thornton <art27@cantab.net> * Make no-go-git variants Signed-off-by: Andrew Thornton <art27@cantab.net> * Submodule RefID Signed-off-by: Andrew Thornton <art27@cantab.net> * fix issue with GetCommitsInfo Signed-off-by: Andrew Thornton <art27@cantab.net> * fix GetLastCommitForPaths Signed-off-by: Andrew Thornton <art27@cantab.net> * Improve efficiency Signed-off-by: Andrew Thornton <art27@cantab.net> * More efficiency Signed-off-by: Andrew Thornton <art27@cantab.net> * even faster Signed-off-by: Andrew Thornton <art27@cantab.net> * Reduce duplication * As per @lunny Signed-off-by: Andrew Thornton <art27@cantab.net> * attempt to fix drone Signed-off-by: Andrew Thornton <art27@cantab.net> * fix test-tags Signed-off-by: Andrew Thornton <art27@cantab.net> * default to use no-go-git variants and add gogit build tag Signed-off-by: Andrew Thornton <art27@cantab.net> * placate lint Signed-off-by: Andrew Thornton <art27@cantab.net> * as per @6543 Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: 6543 <6543@obermui.de> Co-authored-by: techknowlogick <techknowlogick@gitea.io>
2020-12-17 14:00:47 +00:00
// +build !gogit
package git
import (
"crypto/sha1"
"encoding/hex"
"hash"
"strconv"
)
// SHA1 a git commit name
type SHA1 [20]byte
// String returns a string representation of the SHA
func (s SHA1) String() string {
return hex.EncodeToString(s[:])
}
// IsZero returns whether this SHA1 is all zeroes
func (s SHA1) IsZero() bool {
var empty SHA1
return s == empty
}
// ComputeBlobHash compute the hash for a given blob content
func ComputeBlobHash(content []byte) SHA1 {
return ComputeHash(ObjectBlob, content)
}
// ComputeHash compute the hash for a given ObjectType and content
func ComputeHash(t ObjectType, content []byte) SHA1 {
h := NewHasher(t, int64(len(content)))
_, _ = h.Write(content)
return h.Sum()
}
// Hasher is a struct that will generate a SHA1
type Hasher struct {
hash.Hash
}
// NewHasher takes an object type and size and creates a hasher to generate a SHA
func NewHasher(t ObjectType, size int64) Hasher {
h := Hasher{sha1.New()}
_, _ = h.Write(t.Bytes())
_, _ = h.Write([]byte(" "))
_, _ = h.Write([]byte(strconv.FormatInt(size, 10)))
_, _ = h.Write([]byte{0})
return h
}
// Sum generates a SHA1 for the provided hash
func (h Hasher) Sum() (sha1 SHA1) {
copy(sha1[:], h.Hash.Sum(nil))
return
}