1 // Copyright 2020 CUE Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 // Copyright 2010 The Go Authors. All rights reserved. 16 // Use of this source code is governed by a BSD-style 17 // license that can be found in the LICENSE file. 18 19 package path 20 21 import "strings" 22 23 type unixInfo struct{} 24 25 var _ osInfo = unixInfo{} 26 27 const ( 28 unixListSeparator = ':' 29 unixSeparator = '/' 30 ) 31 32 func (o unixInfo) IsPathSeparator(b byte) bool { 33 return b == unixSeparator 34 } 35 36 // IsAbs reports whether the path is absolute. 37 func (o unixInfo) IsAbs(path string) bool { 38 return strings.HasPrefix(path, "/") 39 } 40 41 // volumeNameLen returns length of the leading volume name on Windows. 42 // It returns 0 elsewhere. 43 func (o unixInfo) volumeNameLen(path string) int { 44 return 0 45 } 46 47 // HasPrefix exists for historical compatibility and should not be used. 48 // 49 // Deprecated: HasPrefix does not respect path boundaries and 50 // does not ignore case when required. 51 func (o unixInfo) HasPrefix(p, prefix string) bool { 52 return strings.HasPrefix(p, prefix) 53 } 54 55 func (o unixInfo) splitList(path string) []string { 56 if path == "" { 57 return []string{} 58 } 59 return strings.Split(path, string(unixListSeparator)) 60 } 61 62 func (o unixInfo) join(elem []string) string { 63 // If there's a bug here, fix the logic in ./path_plan9.go too. 64 for i, e := range elem { 65 if e != "" { 66 return clean(strings.Join(elem[i:], string(unixSeparator)), unix) 67 } 68 } 69 return "" 70 } 71 72 func (o unixInfo) sameWord(a, b string) bool { 73 return a == b 74 } 75