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package pathutil
import (
"fmt"
"os"
"regexp"
)
// Exists checks if a file or directory exists.
func Exists(path string) (bool, error) {
_, err := os.Stat(path)
if err == nil {
return true, nil
}
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
// LinkExists checks if link exists.
func LinkExists(path string) (bool, error) {
_, err := os.Lstat(path)
if err == nil {
return true, nil
}
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
// DirExists checks if a path exists and is a directory.
func DirExists(path string) (bool, error) {
fi, err := os.Stat(path)
if err == nil && fi.IsDir() {
return true, nil
}
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
// IsEmpty checks if a given path is empty.
func IsEmpty(path string) (bool, error) {
if b, _ := Exists(path); !b {
return false, fmt.Errorf("%q path does not exist", path)
}
fi, err := os.Stat(path)
if err != nil {
return false, err
}
if fi.IsDir() {
f, err := os.Open(path)
defer f.Close()
if err != nil {
return false, err
}
list, err := f.Readdir(-1)
// f.Close() - see bug fix above
return len(list) == 0, nil
}
return fi.Size() == 0, nil
}
// IsDir checks if a given path is a directory.
func IsDir(path string) (bool, error) {
fi, err := os.Stat(path)
if err != nil {
return false, err
}
return fi.IsDir(), nil
}
// ReInvalidPathChars is used to remove invalid path characters
var ReInvalidPathChars = regexp.MustCompile(`[<>:"/\\\|?\*]+`)
// RemoveInvalidPathChars removes invalid characters for path
func RemoveInvalidPathChars(s string, repl string) string {
return ReInvalidPathChars.ReplaceAllString(s, repl)
}
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