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authorLunny Xiao <xiaolunwen@gmail.com>2019-03-27 17:33:00 +0800
committerGitHub <noreply@github.com>2019-03-27 17:33:00 +0800
commitd578b71d61ee8131e8abf7f538b93d8c6cc6fe6d (patch)
treef0bc12702264f2400f1b4308e06f9aa631fe3cca /modules/git/sha1.go
parentd056bf300ff5ebd89d8b0035722c94a3b08ac745 (diff)
downloadgitea-d578b71d61ee8131e8abf7f538b93d8c6cc6fe6d.tar.gz
gitea-d578b71d61ee8131e8abf7f538b93d8c6cc6fe6d.zip
move code.gitea.io/git to code.gitea.io/gitea/modules/git (#6364)
* move code.gitea.io/git to code.gitea.io/gitea/modules/git * fix imports * fix fmt * fix misspell * remove wrong tests data * fix unit tests * fix tests * fix tests * fix tests * fix tests * fix tests * enable Debug to trace the failure tests * fix tests * fix tests * fix tests * fix tests * fix tests * comment commit count tests since git clone depth is 50 * fix tests * update from code.gitea.io/git * revert change to makefile
Diffstat (limited to 'modules/git/sha1.go')
-rw-r--r--modules/git/sha1.go76
1 files changed, 76 insertions, 0 deletions
diff --git a/modules/git/sha1.go b/modules/git/sha1.go
new file mode 100644
index 0000000000..6c9d53949d
--- /dev/null
+++ b/modules/git/sha1.go
@@ -0,0 +1,76 @@
+// Copyright 2015 The Gogs Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package git
+
+import (
+ "bytes"
+ "encoding/hex"
+ "fmt"
+ "strings"
+)
+
+// EmptySHA defines empty git SHA
+const EmptySHA = "0000000000000000000000000000000000000000"
+
+// SHA1 a git commit name
+type SHA1 [20]byte
+
+// Equal returns true if s has the same SHA1 as caller.
+// Support 40-length-string, []byte, SHA1.
+func (id SHA1) Equal(s2 interface{}) bool {
+ switch v := s2.(type) {
+ case string:
+ if len(v) != 40 {
+ return false
+ }
+ return v == id.String()
+ case []byte:
+ return bytes.Equal(v, id[:])
+ case SHA1:
+ return v == id
+ default:
+ return false
+ }
+}
+
+// String returns string (hex) representation of the Oid.
+func (id SHA1) String() string {
+ return hex.EncodeToString(id[:])
+}
+
+// MustID always creates a new SHA1 from a [20]byte array with no validation of input.
+func MustID(b []byte) SHA1 {
+ var id SHA1
+ copy(id[:], b)
+ return id
+}
+
+// NewID creates a new SHA1 from a [20]byte array.
+func NewID(b []byte) (SHA1, error) {
+ if len(b) != 20 {
+ return SHA1{}, fmt.Errorf("Length must be 20: %v", b)
+ }
+ return MustID(b), nil
+}
+
+// MustIDFromString always creates a new sha from a ID with no validation of input.
+func MustIDFromString(s string) SHA1 {
+ b, _ := hex.DecodeString(s)
+ return MustID(b)
+}
+
+// NewIDFromString creates a new SHA1 from a ID string of length 40.
+func NewIDFromString(s string) (SHA1, error) {
+ var id SHA1
+ s = strings.TrimSpace(s)
+ if len(s) != 40 {
+ return id, fmt.Errorf("Length must be 40: %s", s)
+ }
+ b, err := hex.DecodeString(s)
+ if err != nil {
+ return id, err
+ }
+ return NewID(b)
+}