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package git
import (
"fmt"
"io"
"gopkg.in/src-d/go-git.v2/clients"
"gopkg.in/src-d/go-git.v2/clients/common"
"gopkg.in/src-d/go-git.v2/core"
)
type Remote struct {
Endpoint common.Endpoint
Auth common.AuthMethod
upSrv common.GitUploadPackService
upInfo *common.GitUploadPackInfo
}
// NewRemote returns a new Remote, using as client http.DefaultClient
func NewRemote(url string) (*Remote, error) {
return NewAuthenticatedRemote(url, nil)
}
// NewAuthenticatedRemote returns a new Remote using the given AuthMethod, using as
// client http.DefaultClient
func NewAuthenticatedRemote(url string, auth common.AuthMethod) (*Remote, error) {
end, err := common.NewEndpoint(url)
if err != nil {
return nil, err
}
return &Remote{
Endpoint: end,
Auth: auth,
upSrv: clients.NewGitUploadPackService(),
}, nil
}
// Connect with the endpoint
func (r *Remote) Connect() error {
var err error
if r.Auth == nil {
err = r.upSrv.Connect(r.Endpoint)
} else {
err = r.upSrv.ConnectWithAuth(r.Endpoint, r.Auth)
}
if err != nil {
return err
}
return r.retrieveUpInfo()
}
func (r *Remote) retrieveUpInfo() error {
var err error
if r.upInfo, err = r.upSrv.Info(); err != nil {
return err
}
return nil
}
// Info returns the git-upload-pack info
func (r *Remote) Info() *common.GitUploadPackInfo {
return r.upInfo
}
// Capabilities returns the remote capabilities
func (r *Remote) Capabilities() *common.Capabilities {
return r.upInfo.Capabilities
}
// DefaultBranch returns the name of the remote's default branch
func (r *Remote) DefaultBranch() string {
return r.upInfo.Capabilities.SymbolicReference("HEAD")
}
// Fetch returns a reader using the request
func (r *Remote) Fetch(req *common.GitUploadPackRequest) (io.ReadCloser, error) {
return r.upSrv.Fetch(req)
}
// FetchDefaultBranch returns a reader for the default branch
func (r *Remote) FetchDefaultBranch() (io.ReadCloser, error) {
ref, err := r.Ref(r.DefaultBranch())
if err != nil {
return nil, err
}
return r.Fetch(&common.GitUploadPackRequest{
Want: []core.Hash{ref},
})
}
// Ref returns the Hash pointing the given refName
func (r *Remote) Ref(refName string) (core.Hash, error) {
ref, ok := r.upInfo.Refs[refName]
if !ok {
return core.NewHash(""), fmt.Errorf("unable to find ref %q", refName)
}
return ref, nil
}
// Refs returns the Hash pointing the given refName
func (r *Remote) Refs() map[string]core.Hash {
return r.upInfo.Refs
}
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