github.com/bpfs/defs@v0.0.15/afero/sftpfs/file.go (about)

     1  // Copyright © 2015 Jerry Jacobs <jerry.jacobs@xor-gate.org>.
     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  // http://www.apache.org/licenses/LICENSE-2.0
     7  //
     8  // Unless required by applicable law or agreed to in writing, software
     9  // distributed under the License is distributed on an "AS IS" BASIS,
    10  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package sftpfs
    15  
    16  import (
    17  	"os"
    18  
    19  	"github.com/pkg/sftp"
    20  )
    21  
    22  type File struct {
    23  	client *sftp.Client
    24  	fd     *sftp.File
    25  }
    26  
    27  func FileOpen(s *sftp.Client, name string) (*File, error) {
    28  	fd, err := s.Open(name)
    29  	if err != nil {
    30  		return &File{}, err
    31  	}
    32  	return &File{fd: fd, client: s}, nil
    33  }
    34  
    35  func FileCreate(s *sftp.Client, name string) (*File, error) {
    36  	fd, err := s.Create(name)
    37  	if err != nil {
    38  		return &File{}, err
    39  	}
    40  	return &File{fd: fd, client: s}, nil
    41  }
    42  
    43  func (f *File) Close() error {
    44  	return f.fd.Close()
    45  }
    46  
    47  func (f *File) Name() string {
    48  	return f.fd.Name()
    49  }
    50  
    51  func (f *File) Stat() (os.FileInfo, error) {
    52  	return f.fd.Stat()
    53  }
    54  
    55  func (f *File) Sync() error {
    56  	return nil
    57  }
    58  
    59  func (f *File) Truncate(size int64) error {
    60  	return f.fd.Truncate(size)
    61  }
    62  
    63  func (f *File) Read(b []byte) (n int, err error) {
    64  	return f.fd.Read(b)
    65  }
    66  
    67  func (f *File) ReadAt(b []byte, off int64) (n int, err error) {
    68  	return f.fd.ReadAt(b, off)
    69  }
    70  
    71  func (f *File) Readdir(count int) (res []os.FileInfo, err error) {
    72  	res, err = f.client.ReadDir(f.Name())
    73  	if err != nil {
    74  		return
    75  	}
    76  	if count > 0 {
    77  		if len(res) > count {
    78  			res = res[:count]
    79  		}
    80  	}
    81  	return
    82  }
    83  
    84  func (f *File) Readdirnames(n int) (names []string, err error) {
    85  	data, err := f.Readdir(n)
    86  	if err != nil {
    87  		return nil, err
    88  	}
    89  	for _, v := range data {
    90  		names = append(names, v.Name())
    91  	}
    92  	return
    93  }
    94  
    95  func (f *File) Seek(offset int64, whence int) (int64, error) {
    96  	return f.fd.Seek(offset, whence)
    97  }
    98  
    99  func (f *File) Write(b []byte) (n int, err error) {
   100  	return f.fd.Write(b)
   101  }
   102  
   103  // TODO
   104  func (f *File) WriteAt(b []byte, off int64) (n int, err error) {
   105  	return 0, nil
   106  }
   107  
   108  func (f *File) WriteString(s string) (ret int, err error) {
   109  	return f.fd.Write([]byte(s))
   110  }