/
copy_dir.go
105 lines (86 loc) · 1.84 KB
/
copy_dir.go
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package fileutils
import (
"io/ioutil"
"os"
"path/filepath"
"github.com/pkg/errors"
)
// CopyDir copies all files that are not symlinks in a source directory to another.
func CopyDir(srcDir string, dstDir string, options ...Opt) error {
opts := ©Opts{
recursive: true,
depth: -1,
}
for _, o := range options {
o(opts)
}
return copyDir(srcDir, dstDir, opts)
}
func copyDir(srcDir string, dstDir string, opts *copyOpts) error {
srcDir = filepath.Clean(srcDir)
dstDir = filepath.Clean(dstDir)
srcDirInfo, err := os.Stat(srcDir)
if err != nil {
return err
}
if !srcDirInfo.IsDir() {
return errors.Errorf("%s is not a directory", srcDir)
}
dstDirInfo, err := os.Stat(dstDir)
if err != nil {
if os.IsNotExist(err) {
err = os.MkdirAll(dstDir, srcDirInfo.Mode())
if err != nil {
return err
}
} else {
return err
}
} else {
if dstDirInfo.IsDir() {
if !opts.overwrite {
return errors.Errorf("%s already exists", dstDir)
}
err = os.Chmod(dstDir, srcDirInfo.Mode())
if err != nil {
return err
}
} else {
return errors.Errorf("%s is not a directory", dstDir)
}
}
names, err := ioutil.ReadDir(srcDir)
if err != nil {
return err
}
for _, name := range names {
srcPath := filepath.Join(srcDir, name.Name())
dstPath := filepath.Join(dstDir, name.Name())
if name.IsDir() {
optsCopy := *opts
err = recursiveCopy(srcPath, dstPath, &optsCopy)
if err != nil {
return err
}
continue
}
if name.Mode()&os.ModeSymlink != 0 {
continue
}
optsCopy := *opts
err = copyFile(srcPath, dstPath, &optsCopy)
if err != nil {
return err
}
}
return nil
}
func recursiveCopy(srcDir string, dstDir string, opts *copyOpts) error {
if !opts.recursive || opts.depth == 0 {
return nil
}
if opts.depth > 0 {
opts.depth--
}
return copyDir(srcDir, dstDir, opts)
}