forked from cloudfoundry/libbuildpack
/
utils.go
53 lines (44 loc) · 921 Bytes
/
utils.go
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package cutlass
import (
"github.com/cloudfoundry/libbuildpack"
"io"
"io/ioutil"
"os"
"path/filepath"
)
func CopyFixture(srcDir string) (string, error) {
destDir, err := ioutil.TempDir("", "cutlass-fixture-copy")
if err != nil {
return "", err
}
if err := libbuildpack.CopyDirectory(srcDir, destDir); err != nil {
return "", err
}
return destDir, nil
}
func fileExists(file string) (bool, error) {
_, err := os.Stat(file)
if err != nil {
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
return true, nil
}
func writeToFile(source io.Reader, destFile string, mode os.FileMode) error {
err := os.MkdirAll(filepath.Dir(destFile), 0755)
if err != nil {
return err
}
fh, err := os.OpenFile(destFile, os.O_RDWR|os.O_CREATE|os.O_TRUNC, mode)
if err != nil {
return err
}
defer fh.Close()
_, err = io.Copy(fh, source)
if err != nil {
return err
}
return nil
}