github.com/x-motemen/ghq@v1.6.1/cmd_create.go (about)

     1  package main
     2  
     3  import (
     4  	"fmt"
     5  	"io"
     6  	"os"
     7  
     8  	"github.com/urfave/cli/v2"
     9  )
    10  
    11  func doCreate(c *cli.Context) error {
    12  	var (
    13  		name = c.Args().First()
    14  		vcs  = c.String("vcs")
    15  		w    = c.App.Writer
    16  		bare = c.Bool("bare")
    17  	)
    18  
    19  	if name == "" {
    20  		return fmt.Errorf("repository name is required")
    21  	}
    22  
    23  	u, err := newURL(name, false, true)
    24  	if err != nil {
    25  		return err
    26  	}
    27  
    28  	localRepo, err := LocalRepositoryFromURL(u, bare)
    29  	if err != nil {
    30  		return err
    31  	}
    32  
    33  	p := localRepo.FullPath
    34  	ok, err := isNotExistOrEmpty(p)
    35  	if err != nil {
    36  		return err
    37  	}
    38  	if !ok {
    39  		return fmt.Errorf("directory %q already exists and not empty", p)
    40  	}
    41  
    42  	remoteRepo, err := NewRemoteRepository(u)
    43  	if err != nil {
    44  		return err
    45  	}
    46  
    47  	vcsBackend, ok := vcsRegistry[vcs]
    48  	if !ok {
    49  		vcsBackend, _, err = remoteRepo.VCS()
    50  		if err != nil {
    51  			return err
    52  		}
    53  	}
    54  	if vcsBackend == nil {
    55  		return fmt.Errorf("failed to init: unsupported VCS")
    56  	}
    57  
    58  	initFunc := vcsBackend.Init
    59  	if initFunc == nil {
    60  		return fmt.Errorf("failed to init: unsupported VCS")
    61  	}
    62  
    63  	if err := os.MkdirAll(p, 0755); err != nil {
    64  		return err
    65  	}
    66  
    67  	if err := initFunc(p); err != nil {
    68  		return err
    69  	}
    70  	_, err = fmt.Fprintln(w, p)
    71  	return err
    72  }
    73  
    74  func isNotExistOrEmpty(name string) (bool, error) {
    75  	f, err := os.Open(name)
    76  	if err != nil {
    77  		if os.IsNotExist(err) {
    78  			return true, nil
    79  		}
    80  		return false, err
    81  	}
    82  	defer f.Close()
    83  
    84  	_, err = f.Readdirnames(1)
    85  	if err == io.EOF {
    86  		return true, nil
    87  	}
    88  	return false, err
    89  }