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// Package repository is a set of types and functions for modeling and
// interacting with GitHub repositories.
package repository
import (
"errors"
"fmt"
"os"
"strings"
"github.com/cli/go-gh/v2/internal/git"
"github.com/cli/go-gh/v2/pkg/auth"
"github.com/cli/go-gh/v2/pkg/ssh"
)
// Repository holds information representing a GitHub repository.
type Repository struct {
Host string
Name string
Owner string
}
// Parse extracts the repository information from the following
// string formats: "OWNER/REPO", "HOST/OWNER/REPO", and a full URL.
// If the format does not specify a host, use the config to determine a host.
func Parse(s string) (Repository, error) {
var r Repository
if git.IsURL(s) {
u, err := git.ParseURL(s)
if err != nil {
return r, err
}
host, owner, name, err := git.RepoInfoFromURL(u)
if err != nil {
return r, err
}
r.Host = host
r.Name = name
r.Owner = owner
return r, nil
}
parts := strings.SplitN(s, "/", 4)
for _, p := range parts {
if len(p) == 0 {
return r, fmt.Errorf(`expected the "[HOST/]OWNER/REPO" format, got %q`, s)
}
}
switch len(parts) {
case 3:
r.Host = parts[0]
r.Owner = parts[1]
r.Name = parts[2]
return r, nil
case 2:
r.Host, _ = auth.DefaultHost()
r.Owner = parts[0]
r.Name = parts[1]
return r, nil
default:
return r, fmt.Errorf(`expected the "[HOST/]OWNER/REPO" format, got %q`, s)
}
}
// Parse extracts the repository information from the following
// string formats: "OWNER/REPO", "HOST/OWNER/REPO", and a full URL.
// If the format does not specify a host, use the host provided.
func ParseWithHost(s, host string) (Repository, error) {
var r Repository
if git.IsURL(s) {
u, err := git.ParseURL(s)
if err != nil {
return r, err
}
host, owner, name, err := git.RepoInfoFromURL(u)
if err != nil {
return r, err
}
r.Host = host
r.Owner = owner
r.Name = name
return r, nil
}
parts := strings.SplitN(s, "/", 4)
for _, p := range parts {
if len(p) == 0 {
return r, fmt.Errorf(`expected the "[HOST/]OWNER/REPO" format, got %q`, s)
}
}
switch len(parts) {
case 3:
r.Host = parts[0]
r.Owner = parts[1]
r.Name = parts[2]
return r, nil
case 2:
r.Host = host
r.Owner = parts[0]
r.Name = parts[1]
return r, nil
default:
return r, fmt.Errorf(`expected the "[HOST/]OWNER/REPO" format, got %q`, s)
}
}
// Current uses git remotes to determine the GitHub repository
// the current directory is tracking.
func Current() (Repository, error) {
var r Repository
override := os.Getenv("GH_REPO")
if override != "" {
return Parse(override)
}
remotes, err := git.Remotes()
if err != nil {
return r, err
}
if len(remotes) == 0 {
return r, errors.New("unable to determine current repository, no git remotes configured for this repository")
}
translator := ssh.NewTranslator()
for _, r := range remotes {
if r.FetchURL != nil {
r.FetchURL = translator.Translate(r.FetchURL)
}
if r.PushURL != nil {
r.PushURL = translator.Translate(r.PushURL)
}
}
hosts := auth.KnownHosts()
filteredRemotes := remotes.FilterByHosts(hosts)
if len(filteredRemotes) == 0 {
return r, errors.New("unable to determine current repository, none of the git remotes configured for this repository point to a known GitHub host")
}
rem := filteredRemotes[0]
r.Host = rem.Host
r.Owner = rem.Owner
r.Name = rem.Repo
return r, nil
}
|
