4 files changed, 148 insertions, 0 deletions

diff --git a/modules/git/hooks.go b/modules/git/hooks.go
new file mode 100644
index 00000000..5b3c88a9
--- /dev/null
+++ b/modules/git/hooks.go
@@ -0,0 +1,111 @@
+// Copyright 2014 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 (
+	"errors"
+	"io/ioutil"
+	"os"
+	"path"
+	"strings"
+)
+
+// hookNames is a list of Git hooks' name that are supported.
+var hookNames = []string{
+	"pre-applypatch",
+	"applypatch-msg",
+	"prepare-commit-msg",
+	"commit-msg",
+	"pre-commit",
+	"pre-rebase",
+	"post-commit",
+	"post-receive",
+	"post-update",
+}
+
+var (
+	ErrNotValidHook = errors.New("not a valid Git hook")
+)
+
+// IsValidHookName returns true if given name is a valid Git hook.
+func IsValidHookName(name string) bool {
+	for _, hn := range hookNames {
+		if hn == name {
+			return true
+		}
+	}
+	return false
+}
+
+// Hook represents a Git hook.
+type Hook struct {
+	name     string
+	IsActive bool   // Indicates whether repository has this hook.
+	Content  string // Content of hook if it's active.
+	Sample   string // Sample content from Git.
+	path     string // Hook file path.
+}
+
+// GetHook returns a Git hook by given name and repository.
+func GetHook(repoPath, name string) (*Hook, error) {
+	if !IsValidHookName(name) {
+		return nil, ErrNotValidHook
+	}
+	h := &Hook{
+		name: name,
+		path: path.Join(repoPath, "hooks", name),
+	}
+	if isFile(h.path) {
+		data, err := ioutil.ReadFile(h.path)
+		if err != nil {
+			return nil, err
+		}
+		h.IsActive = true
+		h.Content = string(data)
+	} else if isFile(h.path + ".sample") {
+		data, err := ioutil.ReadFile(h.path + ".sample")
+		if err != nil {
+			return nil, err
+		}
+		h.Sample = string(data)
+	}
+	return h, nil
+}
+
+func (h *Hook) Name() string {
+	return h.name
+}
+
+// Update updates hook settings.
+func (h *Hook) Update() error {
+	if len(strings.TrimSpace(h.Content)) == 0 {
+		return os.Remove(h.path)
+	}
+	return ioutil.WriteFile(h.path, []byte(strings.Replace(h.Content, "\r", "", -1)), os.ModePerm)
+}
+
+// ListHooks returns a list of Git hooks of given repository.
+func ListHooks(repoPath string) (_ []*Hook, err error) {
+	if !isDir(path.Join(repoPath, "hooks")) {
+		return nil, errors.New("hooks path does not exist")
+	}
+
+	hooks := make([]*Hook, len(hookNames))
+	for i, name := range hookNames {
+		hooks[i], err = GetHook(repoPath, name)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return hooks, nil
+}
+
+func (repo *Repository) GetHook(name string) (*Hook, error) {
+	return GetHook(repo.Path, name)
+}
+
+func (repo *Repository) Hooks() ([]*Hook, error) {
+	return ListHooks(repo.Path)
+}
diff --git a/modules/git/repo_tag.go b/modules/git/repo_tag.go
index 77ae3db0..ed994d48 100644
--- a/modules/git/repo_tag.go
+++ b/modules/git/repo_tag.go
@@ -22,6 +22,9 @@ func (repo *Repository) IsTagExist(tagName string) bool {
 
 // GetTags returns all tags of given repository.
 func (repo *Repository) GetTags() ([]string, error) {
+	if gitVer.AtLeast(MustParseVersion("2.0.0")) {
+		return repo.getTagsReversed()
+	}
 	stdout, stderr, err := com.ExecCmdDir(repo.Path, "git", "tag", "-l")
 	if err != nil {
 		return nil, errors.New(stderr)
@@ -30,6 +33,15 @@ func (repo *Repository) GetTags() ([]string, error) {
 	return tags[:len(tags)-1], nil
 }
 
+func (repo *Repository) getTagsReversed() ([]string, error) {
+	stdout, stderr, err := com.ExecCmdDir(repo.Path, "git", "tag", "-l", "--sort=-v:refname")
+	if err != nil {
+		return nil, errors.New(stderr)
+	}
+	tags := strings.Split(stdout, "\n")
+	return tags[:len(tags)-1], nil
+}
+
 func (repo *Repository) CreateTag(tagName, idStr string) error {
 	_, stderr, err := com.ExecCmdDir(repo.Path, "git", "tag", tagName, idStr)
 	if err != nil {
diff --git a/modules/git/utils.go b/modules/git/utils.go
index 26eef231..6abbca55 100644
--- a/modules/git/utils.go
+++ b/modules/git/utils.go
@@ -7,6 +7,7 @@ package git
 import (
 	"bytes"
 	"container/list"
+	"os"
 	"path/filepath"
 	"strings"
 )
@@ -46,3 +47,23 @@ func RefEndName(refStr string) string {
 func filepathFromSHA1(rootdir, sha1 string) string {
 	return filepath.Join(rootdir, "objects", sha1[:2], sha1[2:])
 }
+
+// isDir returns true if given path is a directory,
+// or returns false when it's a file or does not exist.
+func isDir(dir string) bool {
+	f, e := os.Stat(dir)
+	if e != nil {
+		return false
+	}
+	return f.IsDir()
+}
+
+// isFile returns true if given path is a file,
+// or returns false when it's a directory or does not exist.
+func isFile(filePath string) bool {
+	f, e := os.Stat(filePath)
+	if e != nil {
+		return false
+	}
+	return !f.IsDir()
+}
diff --git a/modules/git/version.go b/modules/git/version.go
index 9908d11e..b535521e 100644
--- a/modules/git/version.go
+++ b/modules/git/version.go
@@ -74,6 +74,10 @@ func (v *Version) LessThan(that *Version) bool {
 	return v.Compare(that) < 0
 }
 
+func (v *Version) AtLeast(that *Version) bool {
+	return v.Compare(that) >= 0
+}
+
 // GetVersion returns current Git version installed.
 func GetVersion() (*Version, error) {
 	if gitVer != nil {