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|
package smb2
import (
"errors"
"os"
"regexp"
"strings"
)
var NORMALIZE_PATH = true // normalize path arguments automatically
const PathSeparator = '\\'
func IsPathSeparator(c uint8) bool {
return c == '\\'
}
func base(path string) string {
j := len(path)
for j > 0 && IsPathSeparator(path[j-1]) {
j--
}
if j == 0 {
return ""
}
i := j - 1
for i > 0 && !IsPathSeparator(path[i-1]) {
i--
}
return path[i:j]
}
func dir(path string) string {
if path == "" {
return ""
}
i := len(path)
for i > 0 && IsPathSeparator(path[i-1]) {
i--
}
if i == 0 {
return "\\"
}
i--
for i > 0 && !IsPathSeparator(path[i-1]) {
i--
}
if i == 0 {
return ""
}
i--
for i > 0 && IsPathSeparator(path[i-1]) {
i--
}
if i == 0 {
return "\\"
}
return path[:i]
}
func validatePath(op string, path string, allowAbs bool) error {
if len(path) == 0 {
return nil
}
if !NORMALIZE_PATH {
if strings.ContainsRune(path, '/') {
return &os.PathError{Op: op, Path: path, Err: errors.New("can't use '/' as a path separator; use '\\' instead")}
}
}
if !allowAbs && path[0] == '\\' {
return &os.PathError{Op: op, Path: path, Err: errors.New("leading '\\' is not allowed in this operation")}
}
return nil
}
var mountPathPattern = regexp.MustCompile(`^\\\\[^\\/]+\\[^\\/]+$`)
func validateMountPath(path string) error {
if !mountPathPattern.MatchString(path) {
return &os.PathError{Op: "mount", Path: path, Err: errors.New(`mount path must be a valid share name (\\<server>\<share>)`)}
}
return nil
}
func normPath(path string) string {
if !NORMALIZE_PATH {
return path
}
path = strings.Replace(path, `/`, `\`, -1)
for strings.HasPrefix(path, `.\`) {
path = path[2:]
}
if path == "." {
return ""
}
return path
}
func normPattern(pattern string) string {
if !NORMALIZE_PATH {
return pattern
}
pattern = strings.Replace(pattern, `/`, `\`, -1)
for strings.HasPrefix(pattern, `.\`) {
pattern = pattern[2:]
}
return pattern
}
func join(elem ...string) string {
return normPath(strings.Join(elem, string(PathSeparator)))
}
func split(path string) (dir, file string) {
i := len(path) - 1
for i >= 0 && !IsPathSeparator(path[i]) {
i--
}
return path[:i+1], path[i+1:]
}
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