github.com/megatontech/mynoteforgo@v0.0.0-20200507084910-5d0c6ea6e890/源码/os/path_unix.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  // +build aix darwin dragonfly freebsd js,wasm linux nacl netbsd openbsd solaris
     6  
     7  package os
     8  
     9  const (
    10  	PathSeparator     = '/' // OS-specific path separator
    11  	PathListSeparator = ':' // OS-specific path list separator
    12  )
    13  
    14  // IsPathSeparator reports whether c is a directory separator character.
    15  func IsPathSeparator(c uint8) bool {
    16  	return PathSeparator == c
    17  }
    18  
    19  // basename removes trailing slashes and the leading directory name from path name.
    20  func basename(name string) string {
    21  	i := len(name) - 1
    22  	// Remove trailing slashes
    23  	for ; i > 0 && name[i] == '/'; i-- {
    24  		name = name[:i]
    25  	}
    26  	// Remove leading directory name
    27  	for i--; i >= 0; i-- {
    28  		if name[i] == '/' {
    29  			name = name[i+1:]
    30  			break
    31  		}
    32  	}
    33  
    34  	return name
    35  }
    36  
    37  // splitPath returns the base name and parent directory.
    38  func splitPath(path string) (string, string) {
    39  	// if no better parent is found, the path is relative from "here"
    40  	dirname := "."
    41  	// if no slashes in path, base is path
    42  	basename := path
    43  
    44  	i := len(path) - 1
    45  
    46  	// Remove trailing slashes
    47  	for ; i > 0 && path[i] == '/'; i-- {
    48  		path = path[:i]
    49  	}
    50  
    51  	// Remove leading directory path
    52  	for i--; i >= 0; i-- {
    53  		if path[i] == '/' {
    54  			dirname = path[:i+1]
    55  			basename = path[i+1:]
    56  			break
    57  		}
    58  	}
    59  
    60  	return dirname, basename
    61  }
    62  
    63  func fixRootDirectory(p string) string {
    64  	return p
    65  }