github.com/rohankumardubey/syslog-redirector-golang@v0.0.0-20140320174030-4859f03d829a/src/pkg/os/error_plan9.go (about) 1 // Copyright 2011 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package os 6 7 func isExist(err error) bool { 8 switch pe := err.(type) { 9 case nil: 10 return false 11 case *PathError: 12 err = pe.Err 13 case *LinkError: 14 err = pe.Err 15 } 16 return contains(err.Error(), " exists") 17 } 18 19 func isNotExist(err error) bool { 20 switch pe := err.(type) { 21 case nil: 22 return false 23 case *PathError: 24 err = pe.Err 25 case *LinkError: 26 err = pe.Err 27 } 28 return contains(err.Error(), "does not exist") 29 } 30 31 func isPermission(err error) bool { 32 switch pe := err.(type) { 33 case nil: 34 return false 35 case *PathError: 36 err = pe.Err 37 case *LinkError: 38 err = pe.Err 39 } 40 return contains(err.Error(), "permission denied") 41 } 42 43 // contains is a local version of strings.Contains. It knows len(sep) > 1. 44 func contains(s, sep string) bool { 45 n := len(sep) 46 c := sep[0] 47 for i := 0; i+n <= len(s); i++ { 48 if s[i] == c && s[i:i+n] == sep { 49 return true 50 } 51 } 52 return false 53 }