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// Copyright 2018 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.
package git
import (
"regexp"
"strings"
)
const (
// RemotePrefix is the base directory of the remotes information of git.
RemotePrefix = "refs/remotes/"
// PullPrefix is the base directory of the pull information of git.
PullPrefix = "refs/pull/"
pullLen = len(PullPrefix)
)
// refNamePatternInvalid is regular expression with unallowed characters in git reference name
// They cannot have ASCII control characters (i.e. bytes whose values are lower than \040, or \177 DEL), space, tilde ~, caret ^, or colon : anywhere.
// They cannot have question-mark ?, asterisk *, or open bracket [ anywhere
var refNamePatternInvalid = regexp.MustCompile(
`[\000-\037\177 \\~^:?*[]|` + // No absolutely invalid characters
`(?:^[/.])|` + // Not HasPrefix("/") or "."
`(?:/\.)|` + // no "/."
`(?:\.lock$)|(?:\.lock/)|` + // No ".lock/"" or ".lock" at the end
`(?:\.\.)|` + // no ".." anywhere
`(?://)|` + // no "//" anywhere
`(?:@{)|` + // no "@{"
`(?:[/.]$)|` + // no terminal '/' or '.'
`(?:^@$)`) // Not "@"
// IsValidRefPattern ensures that the provided string could be a valid reference
func IsValidRefPattern(name string) bool {
return !refNamePatternInvalid.MatchString(name)
}
func SanitizeRefPattern(name string) string {
return refNamePatternInvalid.ReplaceAllString(name, "_")
}
// Reference represents a Git ref.
type Reference struct {
Name string
repo *Repository
Object SHA1 // The id of this commit object
Type string
}
// Commit return the commit of the reference
func (ref *Reference) Commit() (*Commit, error) {
return ref.repo.getCommit(ref.Object)
}
// ShortName returns the short name of the reference
func (ref *Reference) ShortName() string {
if ref == nil {
return ""
}
if strings.HasPrefix(ref.Name, BranchPrefix) {
return strings.TrimPrefix(ref.Name, BranchPrefix)
}
if strings.HasPrefix(ref.Name, TagPrefix) {
return strings.TrimPrefix(ref.Name, TagPrefix)
}
if strings.HasPrefix(ref.Name, RemotePrefix) {
return strings.TrimPrefix(ref.Name, RemotePrefix)
}
if strings.HasPrefix(ref.Name, PullPrefix) && strings.IndexByte(ref.Name[pullLen:], '/') > -1 {
return ref.Name[pullLen : strings.IndexByte(ref.Name[pullLen:], '/')+pullLen]
}
return ref.Name
}
// RefGroup returns the group type of the reference
func (ref *Reference) RefGroup() string {
if ref == nil {
return ""
}
if strings.HasPrefix(ref.Name, BranchPrefix) {
return "heads"
}
if strings.HasPrefix(ref.Name, TagPrefix) {
return "tags"
}
if strings.HasPrefix(ref.Name, RemotePrefix) {
return "remotes"
}
if strings.HasPrefix(ref.Name, PullPrefix) && strings.IndexByte(ref.Name[pullLen:], '/') > -1 {
return "pull"
}
return ""
}
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