os.go

Documentation: github.com/spf13/afero

     1  // Copyright © 2014 Steve Francia <spf@spf13.com>.
     2  // Copyright 2013 tsuru authors. All rights reserved.
     3  //
     4  // Licensed under the Apache License, Version 2.0 (the "License");
     5  // you may not use this file except in compliance with the License.
     6  // You may obtain a copy of the License at
     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  package afero
    16  
    17  import (
    18  	"os"
    19  	"time"
    20  )
    21  
    22  var _ Lstater = (*OsFs)(nil)
    23  
    24  // OsFs is a Fs implementation that uses functions provided by the os package.
    25  //
    26  // For details in any method, check the documentation of the os package
    27  // (http://golang.org/pkg/os/).
    28  type OsFs struct{}
    29  
    30  func NewOsFs() Fs {
    31  	return &OsFs{}
    32  }
    33  
    34  func (OsFs) Name() string { return "OsFs" }
    35  
    36  func (OsFs) Create(name string) (File, error) {
    37  	f, e := os.Create(name)
    38  	if f == nil {
    39  		// while this looks strange, we need to return a bare nil (of type nil) not
    40  		// a nil value of type *os.File or nil won't be nil
    41  		return nil, e
    42  	}
    43  	return f, e
    44  }
    45  
    46  func (OsFs) Mkdir(name string, perm os.FileMode) error {
    47  	return os.Mkdir(name, perm)
    48  }
    49  
    50  func (OsFs) MkdirAll(path string, perm os.FileMode) error {
    51  	return os.MkdirAll(path, perm)
    52  }
    53  
    54  func (OsFs) Open(name string) (File, error) {
    55  	f, e := os.Open(name)
    56  	if f == nil {
    57  		// while this looks strange, we need to return a bare nil (of type nil) not
    58  		// a nil value of type *os.File or nil won't be nil
    59  		return nil, e
    60  	}
    61  	return f, e
    62  }
    63  
    64  func (OsFs) OpenFile(name string, flag int, perm os.FileMode) (File, error) {
    65  	f, e := os.OpenFile(name, flag, perm)
    66  	if f == nil {
    67  		// while this looks strange, we need to return a bare nil (of type nil) not
    68  		// a nil value of type *os.File or nil won't be nil
    69  		return nil, e
    70  	}
    71  	return f, e
    72  }
    73  
    74  func (OsFs) Remove(name string) error {
    75  	return os.Remove(name)
    76  }
    77  
    78  func (OsFs) RemoveAll(path string) error {
    79  	return os.RemoveAll(path)
    80  }
    81  
    82  func (OsFs) Rename(oldname, newname string) error {
    83  	return os.Rename(oldname, newname)
    84  }
    85  
    86  func (OsFs) Stat(name string) (os.FileInfo, error) {
    87  	return os.Stat(name)
    88  }
    89  
    90  func (OsFs) Chmod(name string, mode os.FileMode) error {
    91  	return os.Chmod(name, mode)
    92  }
    93  
    94  func (OsFs) Chown(name string, uid, gid int) error {
    95  	return os.Chown(name, uid, gid)
    96  }
    97  
    98  func (OsFs) Chtimes(name string, atime time.Time, mtime time.Time) error {
    99  	return os.Chtimes(name, atime, mtime)
   100  }
   101  
   102  func (OsFs) LstatIfPossible(name string) (os.FileInfo, bool, error) {
   103  	fi, err := os.Lstat(name)
   104  	return fi, true, err
   105  }
   106  
   107  func (OsFs) SymlinkIfPossible(oldname, newname string) error {
   108  	return os.Symlink(oldname, newname)
   109  }
   110  
   111  func (OsFs) ReadlinkIfPossible(name string) (string, error) {
   112  	return os.Readlink(name)
   113  }
   114
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