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getter.go
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getter.go
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package main
import (
"fmt"
"net/url"
"os"
"path"
"path/filepath"
"strings"
"sync"
"github.com/x-motemen/ghq/logger"
)
var seen sync.Map
func getRepoLock(localRepoRoot string) bool {
_, loaded := seen.LoadOrStore(localRepoRoot, struct{}{})
return !loaded
}
type getter struct {
update, shallow, silent, ssh, recursive, bare bool
vcs, branch string
}
func (g *getter) get(argURL string) error {
u, err := newURL(argURL, g.ssh, false)
if err != nil {
return fmt.Errorf("could not parse URL %q: %w", argURL, err)
}
branch := g.branch
if pos := strings.LastIndexByte(u.Path, '@'); pos >= 0 {
u.Path, branch = u.Path[:pos], u.Path[pos+1:]
}
remote, err := NewRemoteRepository(u)
if err != nil {
return err
}
return g.getRemoteRepository(remote, branch)
}
// getRemoteRepository clones or updates a remote repository remote.
// If doUpdate is true, updates the locally cloned repository. Otherwise does nothing.
// If isShallow is true, does shallow cloning. (no effect if already cloned or the VCS is Mercurial and git-svn)
func (g *getter) getRemoteRepository(remote RemoteRepository, branch string) error {
remoteURL := remote.URL()
local, err := LocalRepositoryFromURL(remoteURL, g.bare)
if err != nil {
return err
}
var (
fpath = local.FullPath
newPath = false
)
_, err = os.Stat(fpath)
if err != nil {
if os.IsNotExist(err) {
newPath = true
err = nil
}
if err != nil {
return err
}
}
switch {
case newPath:
if remoteURL.Scheme == "codecommit" {
logger.Log("clone", fmt.Sprintf("%s -> %s", remoteURL.Opaque, fpath))
} else {
logger.Log("clone", fmt.Sprintf("%s -> %s", remoteURL, fpath))
}
var (
localRepoRoot = fpath
repoURL = remoteURL
)
vcs, ok := vcsRegistry[g.vcs]
if !ok {
vcs, repoURL, err = remote.VCS()
if err != nil {
return err
}
}
if l := detectLocalRepoRoot(remoteURL.Path, repoURL.Path); l != "" {
localRepoRoot = filepath.Join(local.RootPath, remoteURL.Hostname(), l)
}
if g.bare {
localRepoRoot = localRepoRoot + ".git"
}
if remoteURL.Scheme == "codecommit" {
repoURL, _ = url.Parse(remoteURL.Opaque)
}
if getRepoLock(localRepoRoot) {
return vcs.Clone(&vcsGetOption{
url: repoURL,
dir: localRepoRoot,
shallow: g.shallow,
silent: g.silent,
branch: branch,
recursive: g.recursive,
bare: g.bare,
})
}
return nil
case g.update:
logger.Log("update", fpath)
vcs, localRepoRoot := local.VCS()
if vcs == nil {
return fmt.Errorf("failed to detect VCS for %q", fpath)
}
repoURL := remoteURL
if remoteURL.Scheme == "codecommit" {
repoURL, _ = url.Parse(remoteURL.Opaque)
}
if getRepoLock(localRepoRoot) {
return vcs.Update(&vcsGetOption{
url: repoURL,
dir: localRepoRoot,
silent: g.silent,
recursive: g.recursive,
bare: g.bare,
})
}
return nil
}
logger.Log("exists", fpath)
return nil
}
func detectLocalRepoRoot(remotePath, repoPath string) string {
remotePath = strings.TrimSuffix(strings.TrimSuffix(remotePath, "/"), ".git")
repoPath = strings.TrimSuffix(strings.TrimSuffix(repoPath, "/"), ".git")
pathParts := strings.Split(repoPath, "/")
pathParts = pathParts[1:]
for i := 0; i < len(pathParts); i++ {
subPath := "/" + path.Join(pathParts[i:]...)
if subIdx := strings.Index(remotePath, subPath); subIdx >= 0 {
return remotePath[0:subIdx] + subPath
}
}
return ""
}