forked from mislav/hub
/
fork.go
92 lines (77 loc) · 2.29 KB
/
fork.go
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package commands
import (
"fmt"
"github.com/github/hub/github"
"github.com/github/hub/ui"
"github.com/github/hub/utils"
)
var cmdFork = &Command{
Run: fork,
Usage: "fork [--no-remote]",
Short: "Make a fork of a remote repository on GitHub and add as remote",
Long: `Forks the original project (referenced by "origin" remote) on GitHub and
adds a new remote for it under your username.
`,
}
var flagForkNoRemote bool
func init() {
cmdFork.Flag.BoolVar(&flagForkNoRemote, "no-remote", false, "")
CmdRunner.Use(cmdFork)
}
/*
$ hub fork
[ repo forked on GitHub ]
> git remote add -f YOUR_USER git@github.com:YOUR_USER/CURRENT_REPO.git
$ hub fork --no-remote
[ repo forked on GitHub ]
*/
func fork(cmd *Command, args *Args) {
localRepo, err := github.LocalRepo()
utils.Check(err)
project, err := localRepo.MainProject()
if err != nil {
utils.Check(fmt.Errorf("Error: repository under 'origin' remote is not a GitHub project"))
}
config := github.CurrentConfig()
host, err := config.PromptForHost(project.Host)
if err != nil {
utils.Check(github.FormatError("forking repository", err))
}
originRemote, err := localRepo.OriginRemote()
if err != nil {
utils.Check(fmt.Errorf("Error creating fork: %s", err))
}
forkProject := github.NewProject(host.User, project.Name, project.Host)
newRemoteName := forkProject.Owner
client := github.NewClient(project.Host)
existingRepo, err := client.Repository(forkProject)
if err == nil {
var parentURL *github.URL
if parent := existingRepo.Parent; parent != nil {
parentURL, _ = github.ParseURL(parent.HTMLURL)
}
if parentURL == nil || !project.SameAs(parentURL.Project) {
err = fmt.Errorf("Error creating fork: %s already exists on %s",
forkProject, forkProject.Host)
utils.Check(err)
}
} else {
if !args.Noop {
newRepo, err := client.ForkRepository(project)
utils.Check(err)
forkProject.Owner = newRepo.Owner.Login
forkProject.Name = newRepo.Name
}
}
args.NoForward()
if !flagForkNoRemote {
originURL := originRemote.URL.String()
url := forkProject.GitURL("", "", true)
args.Before("git", "remote", "add", "-f", newRemoteName, originURL)
args.Before("git", "remote", "set-url", newRemoteName, url)
args.AfterFn(func() error {
ui.Printf("new remote: %s\n", newRemoteName)
return nil
})
}
}