path_unix.go

Documentation: os

		 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  //go:build aix || darwin || dragonfly || freebsd || (js && wasm) || linux || netbsd || openbsd || solaris
		 6  // +build aix darwin dragonfly freebsd js,wasm linux netbsd openbsd solaris
		 7  
		 8  package os
		 9  
		10  const (
		11  	PathSeparator		 = '/' // OS-specific path separator
		12  	PathListSeparator = ':' // OS-specific path list separator
		13  )
		14  
		15  // IsPathSeparator reports whether c is a directory separator character.
		16  func IsPathSeparator(c uint8) bool {
		17  	return PathSeparator == c
		18  }
		19  
		20  // basename removes trailing slashes and the leading directory name from path name.
		21  func basename(name string) string {
		22  	i := len(name) - 1
		23  	// Remove trailing slashes
		24  	for ; i > 0 && name[i] == '/'; i-- {
		25  		name = name[:i]
		26  	}
		27  	// Remove leading directory name
		28  	for i--; i >= 0; i-- {
		29  		if name[i] == '/' {
		30  			name = name[i+1:]
		31  			break
		32  		}
		33  	}
		34  
		35  	return name
		36  }
		37  
		38  // splitPath returns the base name and parent directory.
		39  func splitPath(path string) (string, string) {
		40  	// if no better parent is found, the path is relative from "here"
		41  	dirname := "."
		42  
		43  	// Remove all but one leading slash.
		44  	for len(path) > 1 && path[0] == '/' && path[1] == '/' {
		45  		path = path[1:]
		46  	}
		47  
		48  	i := len(path) - 1
		49  
		50  	// Remove trailing slashes.
		51  	for ; i > 0 && path[i] == '/'; i-- {
		52  		path = path[:i]
		53  	}
		54  
		55  	// if no slashes in path, base is path
		56  	basename := path
		57  
		58  	// Remove leading directory path
		59  	for i--; i >= 0; i-- {
		60  		if path[i] == '/' {
		61  			if i == 0 {
		62  				dirname = path[:1]
		63  			} else {
		64  				dirname = path[:i]
		65  			}
		66  			basename = path[i+1:]
		67  			break
		68  		}
		69  	}
		70  
		71  	return dirname, basename
		72  }
		73  
		74  func fixRootDirectory(p string) string {
		75  	return p
		76  }
		77
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